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β-Endorphin - Wikipedia
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id="toc-Mechanism_of_action" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Mechanism_of_action"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Mechanism of action</span> </div> </a> <ul id="toc-Mechanism_of_action-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-History" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#History"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>History</span> </div> </a> <ul id="toc-History-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" 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interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%91%D0%B5%D1%82%D0%B0-%D0%B5%D0%BD%D0%B4%D0%BE%D1%80%D1%84%D0%B8%D0%BD" title="Бета-ендорфин – Bulgarian" lang="bg" hreflang="bg" data-title="Бета-ендорфин" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Beta-endorfin" title="Beta-endorfin – Czech" lang="cs" hreflang="cs" data-title="Beta-endorfin" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de badge-Q70894304 mw-list-item" title=""><a href="https://de.wikipedia.org/wiki/%CE%92-Endorphin" title="Β-Endorphin – German" lang="de" hreflang="de" data-title="Β-Endorphin" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Betaendorfina" title="Betaendorfina – Spanish" lang="es" hreflang="es" data-title="Betaendorfina" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A8%D8%AA%D8%A7-%D8%A7%D9%86%D8%AF%D9%88%D8%B1%D9%81%DB%8C%D9%86" title="بتا-اندورفین – Persian" lang="fa" hreflang="fa" data-title="بتا-اندورفین" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/%CE%92%C3%AAta-endorphine" title="Βêta-endorphine – French" lang="fr" hreflang="fr" data-title="Βêta-endorphine" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Beta-endorfina" title="Beta-endorfina – Galician" lang="gl" hreflang="gl" data-title="Beta-endorfina" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%CE%92-%E3%82%A8%E3%83%B3%E3%83%89%E3%83%AB%E3%83%95%E3%82%A3%E3%83%B3" title="Β-エンドルフィン – Japanese" lang="ja" hreflang="ja" data-title="Β-エンドルフィン" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Beta-endorfina" title="Beta-endorfina – Polish" lang="pl" hreflang="pl" data-title="Beta-endorfina" 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.ib-chembox{border-collapse:collapse;text-align:left}.mw-parser-output .ib-chembox td,.mw-parser-output .ib-chembox th{border:1px solid #a2a9b1;width:40%}.mw-parser-output .ib-chembox td+td{width:60%}</style> </p> <table class="infobox ib-chembox"> <caption>β-Endorphin </caption> <tbody><tr> <td colspan="2" style="text-align:center; padding:2px;"><span typeof="mw:File"><a href="/wiki/File:Beta-endorphin.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/07/Beta-endorphin.png/250px-Beta-endorphin.png" decoding="async" width="250" height="91" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/07/Beta-endorphin.png/375px-Beta-endorphin.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/07/Beta-endorphin.png/500px-Beta-endorphin.png 2x" data-file-width="3096" data-file-height="1123" /></a></span> </td></tr> <tr> <td colspan="2" style="text-align:center; padding:2px;"><span typeof="mw:File"><a href="/wiki/File:Beta_endorphin_3D_stick.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Beta_endorphin_3D_stick.png/250px-Beta_endorphin_3D_stick.png" decoding="async" width="250" height="208" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Beta_endorphin_3D_stick.png/375px-Beta_endorphin_3D_stick.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Beta_endorphin_3D_stick.png/500px-Beta_endorphin_3D_stick.png 2x" data-file-width="2137" data-file-height="1782" /></a></span> </td></tr> <tr> <th colspan="2" style="background: #f8eaba; text-align: center;">Names </th></tr> <tr> <td colspan="2" style="text-align:left;"><a href="/wiki/Chemical_nomenclature" title="Chemical nomenclature">IUPAC name</a> <div style="max-width:22em; word-wrap:break-word; padding-left:1.7em;">L-Tyrosylglycylglycyl-L-phenylalanyl-L-methionyl-L-threonyl-L-seryl-L-glutaminyl-L-lysyl-L-seryl-L-glutaminyl-L-threonyl-L-prolyl-L-leucyl-L-valyl-L-threonyl-L-leucyl-L-phenylalanyl-L-lysyl-L-asparaginyl-L-alanyl-L-isoleucyl-L-isoleucyl-L-lysyl-L-asparaginyl-L-alanyl-L-tyrosyl-L-lysyl-L-lysylglycyl-L-glutamine</div> </td></tr> <tr> <th colspan="2" style="background: #f8eaba; text-align: center;">Identifiers </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/CAS_Registry_Number" title="CAS Registry Number">CAS Number</a></div> </td> <td><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><span title="commonchemistry.cas.org"><a rel="nofollow" class="external text" href="https://commonchemistry.cas.org/detail?cas_rn=60617-12-1">60617-12-1</a></span><sup> <span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/7px-Yes_check.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/14px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span></sup></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">3D model (<a href="/wiki/JSmol" class="mw-redirect" title="JSmol">JSmol</a>)</div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="chemapps.stolaf.edu (3D interactive model)"><a rel="nofollow" class="external text" href="https://chemapps.stolaf.edu/jmol/jmol.php?model=CC%5BC%40H%5D%28C%29%5BC%40%40H%5D%28C%28%3DO%29N%5BC%40%40H%5D%28%5BC%40%40H%5D%28C%29CC%29C%28%3DO%29N%5BC%40%40H%5D%28CCCCN%29C%28%3DO%29N%5BC%40%40H%5D%28CC%28%3DO%29N%29C%28%3DO%29N%5BC%40%40H%5D%28C%29C%28%3DO%29N%5BC%40%40H%5D%28Cc1ccc%28cc1%29O%29C%28%3DO%29N%5BC%40%40H%5D%28CCCCN%29C%28%3DO%29N%5BC%40%40H%5D%28CCCCN%29C%28%3DO%29NCC%28%3DO%29N%5BC%40%40H%5D%28CCC%28%3DO%29N%29C%28%3DO%29O%29NC%28%3DO%29%5BC%40H%5D%28C%29NC%28%3DO%29%5BC%40H%5D%28CC%28%3DO%29N%29NC%28%3DO%29%5BC%40H%5D%28CCCCN%29NC%28%3DO%29%5BC%40H%5D%28Cc2ccccc2%29NC%28%3DO%29%5BC%40H%5D%28CC%28C%29C%29NC%28%3DO%29%5BC%40H%5D%28%5BC%40%40H%5D%28C%29O%29NC%28%3DO%29%5BC%40H%5D%28C%28C%29C%29NC%28%3DO%29%5BC%40H%5D%28CC%28C%29C%29NC%28%3DO%29%5BC%40%40H%5D3CCCN3C%28%3DO%29%5BC%40H%5D%28%5BC%40%40H%5D%28C%29O%29NC%28%3DO%29%5BC%40H%5D%28CCC%28%3DO%29N%29NC%28%3DO%29%5BC%40H%5D%28CO%29NC%28%3DO%29%5BC%40H%5D%28CCCCN%29NC%28%3DO%29%5BC%40H%5D%28CCC%28%3DO%29N%29NC%28%3DO%29%5BC%40H%5D%28CO%29NC%28%3DO%29%5BC%40H%5D%28%5BC%40%40H%5D%28C%29O%29NC%28%3DO%29%5BC%40H%5D%28CCSC%29NC%28%3DO%29%5BC%40H%5D%28Cc4ccccc4%29NC%28%3DO%29CNC%28%3DO%29CNC%28%3DO%29%5BC%40H%5D%28Cc5ccc%28cc5%29O%29N">Interactive image</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/ChEBI" title="ChEBI">ChEBI</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="www.ebi.ac.uk"><a rel="nofollow" class="external text" href="https://www.ebi.ac.uk/chebi/searchId.do?chebiId=10415">CHEBI:10415</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/ChemSpider" title="ChemSpider">ChemSpider</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="www.chemspider.com"><a rel="nofollow" class="external text" href="https://www.chemspider.com/Chemical-Structure.28184601.html">28184601</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/ECHA_InfoCard" class="mw-redirect" title="ECHA InfoCard"><span title="echa.europa.eu">ECHA InfoCard</span></a> </td> <td><a rel="nofollow" class="external text" href="https://echa.europa.eu/substance-information/-/substanceinfo/100.056.646">100.056.646</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q2993328#P2566" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/IUPHAR/BPS" class="mw-redirect" title="IUPHAR/BPS">IUPHAR/BPS</a></div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="www.guidetopharmacology.org"><a rel="nofollow" class="external text" href="http://www.guidetopharmacology.org/GRAC/LigandDisplayForward?tab=summary&ligandId=1643">1643</a></span></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/PubChem" title="PubChem">PubChem</a> <abbr title="Compound ID">CID</abbr></div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="pubchem.ncbi.nlm.nih.gov"><a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/16132316">16132316</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/Unique_Ingredient_Identifier" title="Unique Ingredient Identifier">UNII</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="precision.fda.gov"><a rel="nofollow" class="external text" href="https://precision.fda.gov/uniisearch/srs/unii/3S51P4W3XQ">3S51P4W3XQ</a></span><sup> <span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/7px-Yes_check.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/14px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span></sup></li></ul></div> </td></tr> <tr> <td colspan="2"><div class="collapsible-list mw-collapsible mw-collapsed" style="text-align: left;"> <div style="line-height: 1.6em; font-weight: bold; text-align:left; font-weight:normal; background:transparent;"><div><a href="/wiki/International_Chemical_Identifier" title="International Chemical Identifier">InChI</a></div></div> <ul class="mw-collapsible-content" style="margin-top: 0; margin-bottom: 0; line-height: inherit; list-style: none; margin-left: 0; word-break:break-all;"><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.5em; text-align:left;"><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">InChI=1S/C158H253N41O44S/c1-17-84(9)126(153(237)184-102(44-29-34-65-163)137(221)188-112(74-120(168)210)142(226)173-86(11)131(215)185-110(73-94-48-52-96(206)53-49-94)146(230)179-99(41-26-31-62-160)135(219)177-98(40-25-30-61-159)134(218)172-78-124(214)175-106(158(242)243)56-59-119(167)209)195-154(238)127(85(10)18-2)194-132(216)87(12)174-143(227)113(75-121(169)211)187-136(220)100(42-27-32-63-161)180-147(231)111(72-92-38-23-20-24-39-92)186-144(228)107(68-81(3)4)190-155(239)129(89(14)203)197-152(236)125(83(7)8)193-148(232)108(69-82(5)6)189-151(235)116-45-35-66-199(116)157(241)130(90(15)204)198-140(224)104(55-58-118(166)208)182-149(233)114(79-200)191-138(222)101(43-28-33-64-162)178-139(223)103(54-57-117(165)207)181-150(234)115(80-201)192-156(240)128(88(13)202)196-141(225)105(60-67-244-16)183-145(229)109(71-91-36-21-19-22-37-91)176-123(213)77-170-122(212)76-171-133(217)97(164)70-93-46-50-95(205)51-47-93/h19-24,36-39,46-53,81-90,97-116,125-130,200-206H,17-18,25-35,40-45,54-80,159-164H2,1-16H3,(H2,165,207)(H2,166,208)(H2,167,209)(H2,168,210)(H2,169,211)(H,170,212)(H,171,217)(H,172,218)(H,173,226)(H,174,227)(H,175,214)(H,176,213)(H,177,219)(H,178,223)(H,179,230)(H,180,231)(H,181,234)(H,182,233)(H,183,229)(H,184,237)(H,185,215)(H,186,228)(H,187,220)(H,188,221)(H,189,235)(H,190,239)(H,191,222)(H,192,240)(H,193,232)(H,194,216)(H,195,238)(H,196,225)(H,197,236)(H,198,224)(H,242,243)/t84-,85-,86-,87-,88+,89+,90+,97-,98-,99-,100-,101-,102-,103-,104-,105-,106-,107-,108-,109-,110-,111-,112-,113-,114-,115-,116-,125-,126-,127-,128-,129-,130-/m0/s1</div><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">Key: WOPZMFQRCBYPJU-NTXHZHDSSA-N</div></div></li><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.5em; text-align:left;"><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">InChI=1/C158H253N41O44S/c1-17-84(9)126(153(237)184-102(44-29-34-65-163)137(221)188-112(74-120(168)210)142(226)173-86(11)131(215)185-110(73-94-48-52-96(206)53-49-94)146(230)179-99(41-26-31-62-160)135(219)177-98(40-25-30-61-159)134(218)172-78-124(214)175-106(158(242)243)56-59-119(167)209)195-154(238)127(85(10)18-2)194-132(216)87(12)174-143(227)113(75-121(169)211)187-136(220)100(42-27-32-63-161)180-147(231)111(72-92-38-23-20-24-39-92)186-144(228)107(68-81(3)4)190-155(239)129(89(14)203)197-152(236)125(83(7)8)193-148(232)108(69-82(5)6)189-151(235)116-45-35-66-199(116)157(241)130(90(15)204)198-140(224)104(55-58-118(166)208)182-149(233)114(79-200)191-138(222)101(43-28-33-64-162)178-139(223)103(54-57-117(165)207)181-150(234)115(80-201)192-156(240)128(88(13)202)196-141(225)105(60-67-244-16)183-145(229)109(71-91-36-21-19-22-37-91)176-123(213)77-170-122(212)76-171-133(217)97(164)70-93-46-50-95(205)51-47-93/h19-24,36-39,46-53,81-90,97-116,125-130,200-206H,17-18,25-35,40-45,54-80,159-164H2,1-16H3,(H2,165,207)(H2,166,208)(H2,167,209)(H2,168,210)(H2,169,211)(H,170,212)(H,171,217)(H,172,218)(H,173,226)(H,174,227)(H,175,214)(H,176,213)(H,177,219)(H,178,223)(H,179,230)(H,180,231)(H,181,234)(H,182,233)(H,183,229)(H,184,237)(H,185,215)(H,186,228)(H,187,220)(H,188,221)(H,189,235)(H,190,239)(H,191,222)(H,192,240)(H,193,232)(H,194,216)(H,195,238)(H,196,225)(H,197,236)(H,198,224)(H,242,243)/t84-,85-,86-,87-,88+,89+,90+,97-,98-,99-,100-,101-,102-,103-,104-,105-,106-,107-,108-,109-,110-,111-,112-,113-,114-,115-,116-,125-,126-,127-,128-,129-,130-/m0/s1</div><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">Key: WOPZMFQRCBYPJU-NTXHZHDSBY</div></div></li></ul> </div> </td></tr> <tr> <td colspan="2"><div class="collapsible-list mw-collapsible mw-collapsed" style="text-align: left;"> <div style="line-height: 1.6em; font-weight: bold; text-align:left; font-weight:normal; background:transparent;"><div><a href="/wiki/Simplified_molecular-input_line-entry_system" class="mw-redirect" title="Simplified molecular-input line-entry system">SMILES</a></div></div> <ul class="mw-collapsible-content" style="margin-top: 0; margin-bottom: 0; line-height: inherit; list-style: none; margin-left: 0; word-break:break-all;"><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.6em; word-wrap:break-word; text-indent:-1.5em; text-align:left; font-size:97%; line-height:120%;">CC[C@H](C)[C@@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(=O)N)C(=O)N[C@@H](C)C(=O)N[C@@H](Cc1ccc(cc1)O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCCN)C(=O)NCC(=O)N[C@@H](CCC(=O)N)C(=O)O)NC(=O)[C@H](C)NC(=O)[C@H](CC(=O)N)NC(=O)[C@H](CCCCN)NC(=O)[C@H](Cc2ccccc2)NC(=O)[C@H](CC(C)C)NC(=O)[C@H]([C@@H](C)O)NC(=O)[C@H](C(C)C)NC(=O)[C@H](CC(C)C)NC(=O)[C@@H]3CCCN3C(=O)[C@H]([C@@H](C)O)NC(=O)[C@H](CCC(=O)N)NC(=O)[C@H](CO)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CCC(=O)N)NC(=O)[C@H](CO)NC(=O)[C@H]([C@@H](C)O)NC(=O)[C@H](CCSC)NC(=O)[C@H](Cc4ccccc4)NC(=O)CNC(=O)CNC(=O)[C@H](Cc5ccc(cc5)O)N</div></li></ul> </div> </td></tr> <tr> <th colspan="2" style="background: #f8eaba; text-align: center;">Properties </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Chemical_formula" title="Chemical formula">Chemical formula</a></div> </td> <td><span title="Carbon">C</span><sub>158</sub><span title="Hydrogen">H</span><sub>251</sub><span title="Nitrogen">N</span><sub>39</sub><span title="Oxygen">O</span><sub>46</sub><span title="Sulfur">S</span> </td></tr> <tr> <td><a href="/wiki/Molar_mass" title="Molar mass">Molar mass</a> </td> <td><span class="nowrap"><span data-sort-value="7003346503000000000♠"></span>3<span style="margin-left:.25em;">465</span>.03</span> g·mol<sup>−1</sup>   </td></tr> <tr> <td colspan="2" style="text-align:left; background:#f8eaba; border:1px solid #a2a9b1;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Except where otherwise noted, data are given for materials in their <a href="/wiki/Standard_state" title="Standard state">standard state</a> (at 25 °C [77 °F], 100 kPa).</div> <div style="margin-top: 0.3em;"><div style="text-align:center;"><span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/12px-Yes_check.svg.png" decoding="async" width="12" height="12" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/18px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/24px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span> <span class="reflink plainlinks nourlexpansion"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Special:ComparePages&rev1=444653150&page2=%CE%92-Endorphin">verify</a></span> (<a href="/wiki/Wikipedia:WikiProject_Chemicals/Chembox_validation" title="Wikipedia:WikiProject Chemicals/Chembox validation">what is</a> <sup><span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/7px-Yes_check.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/14px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span><span typeof="mw:File"><span><img alt="☒" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a2/X_mark.svg/7px-X_mark.svg.png" decoding="async" width="7" height="8" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a2/X_mark.svg/11px-X_mark.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a2/X_mark.svg/14px-X_mark.svg.png 2x" data-file-width="525" data-file-height="600" /></span></span><span style="display:none">N</span></sup> ?) </div></div> <div style="margin-top: 0.3em; text-align: center;"><a href="/wiki/Wikipedia:Chemical_infobox#References" title="Wikipedia:Chemical infobox">Infobox references</a></div> </td></tr> </tbody></table><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Chemical compound</div> <p><b>β-Endorphin</b> (<i>beta</i>-endorphin) is an <a href="/wiki/Endogenous" class="mw-redirect" title="Endogenous">endogenous</a> <a href="/wiki/Opioid" title="Opioid">opioid</a> <a href="/wiki/Neuropeptide" title="Neuropeptide">neuropeptide</a> and <a href="/wiki/Peptide_hormone" title="Peptide hormone">peptide hormone</a> that is produced in certain <a href="/wiki/Neuron" title="Neuron">neurons</a> within the <a href="/wiki/Central_nervous_system" title="Central nervous system">central nervous system</a> and <a href="/wiki/Peripheral_nervous_system" title="Peripheral nervous system">peripheral nervous system</a>.<sup id="cite_ref-NHM-Beta-endorphin_1-0" class="reference"><a href="#cite_note-NHM-Beta-endorphin-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> It is one of three <a href="/wiki/Endorphins" title="Endorphins">endorphins</a> that are produced in humans, the others of which include <a href="/wiki/%CE%91-endorphin" class="mw-redirect" title="Α-endorphin">α-endorphin</a> and <a href="/wiki/%CE%93-endorphin" class="mw-redirect" title="Γ-endorphin">γ-endorphin</a>.<sup id="cite_ref-Endogenous_opioid_families_-_2012_review_2-0" class="reference"><a href="#cite_note-Endogenous_opioid_families_-_2012_review-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>There are multiple forms of β-endorphins with the full sequence of <a href="/wiki/Tyrosine" title="Tyrosine">Tyr</a>-<a href="/wiki/Glycine" title="Glycine">Gly</a>-Gly-<a href="/wiki/Phenylalanine" title="Phenylalanine">Phe</a>-<a href="/wiki/Methionine" title="Methionine">Met</a>-<a href="/wiki/Threonine" title="Threonine">Thr</a>-<a href="/wiki/Serine" title="Serine">Ser</a>-<a href="/wiki/Glutamic_acid" title="Glutamic acid">Glu</a>-<a href="/wiki/Lysine" title="Lysine">Lys</a>-Ser-<a href="/wiki/Glutamine" title="Glutamine">Gln</a>-Thr-<a href="/wiki/Proline" title="Proline">Pro</a>-<a href="/wiki/Leucine" title="Leucine">Leu</a>-<a href="/wiki/Valine" title="Valine">Val</a>-Thr-Leu-Phe-Lys-<a href="/wiki/Asparagine" title="Asparagine">Asn</a>-<a href="/wiki/Alanine" title="Alanine">Ala</a>-<a href="/wiki/Isoleucine" title="Isoleucine">Ile</a>-Ile-Lys-Asn-Ala-Tyr-Lys-Lys-Gly-Glu (31 amino acids) denoted as β-endorphin(1-31) and variants truncated to the first 26 and 27 amino acids as β-endorphin(1-26) and β-endorphin(1-27). <sup id="cite_ref-NHM-Beta-endorphin_1-1" class="reference"><a href="#cite_note-NHM-Beta-endorphin-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> However, β-endorphin(1-31) is the only form that possess a potent analgesic effect and it is the primary form located in the anterior pituitary gland, and regions such as the hypothalamus, midbrain, and amygdala.<sup id="cite_ref-Pilozzi2020_5-0" class="reference"><a href="#cite_note-Pilozzi2020-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> The first 16 amino acids are identical to α-endorphin. β-Endorphin is considered to be a part of the <a href="/wiki/Endogenous_opioid" class="mw-redirect" title="Endogenous opioid">endogenous opioid</a> and <a href="/wiki/Endorphin" class="mw-redirect" title="Endorphin">endorphin</a> classes of neuropeptides;<sup id="cite_ref-NHM-Beta-endorphin_1-2" class="reference"><a href="#cite_note-NHM-Beta-endorphin-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> all of the established endogenous opioid peptides contain the same N-terminal amino acid sequence, Tyr-Gly-Gly-Phe, followed by either <span class="nowrap">-Met</span> or <span class="nowrap">-Leu</span>.<sup id="cite_ref-NHM-Beta-endorphin_1-3" class="reference"><a href="#cite_note-NHM-Beta-endorphin-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Function of β-endorphin has been known to be associated with <a href="/wiki/Hunger_(physiology)" title="Hunger (physiology)">hunger</a>, thrill, <a href="/wiki/Pain" title="Pain">pain</a>, maternal care, sexual behavior, and <a href="/wiki/Reward_cognition" class="mw-redirect" title="Reward cognition">reward cognition</a>. In the broadest sense, β-endorphin is primarily utilized in the body to reduce stress and maintain homeostasis. In behavioral research, studies have shown that β-endorphin is released via <a href="/wiki/Volume_transmission" class="mw-redirect" title="Volume transmission">volume transmission</a> into the <a href="/wiki/Ventricular_system" title="Ventricular system">ventricular system</a> in response to a variety of stimuli, and <a href="/wiki/Novelty" title="Novelty">novel stimuli</a> in particular.<sup id="cite_ref-:1_6-0" class="reference"><a href="#cite_note-:1-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Formation_and_structure">Formation and structure</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%CE%92-Endorphin&action=edit&section=1" title="Edit section: Formation and structure"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>β-Endorphin is found in neurons of the <a href="/wiki/Hypothalamus" title="Hypothalamus">hypothalamus</a>, as well as the <a href="/wiki/Pituitary" class="mw-redirect" title="Pituitary">pituitary</a> gland. It is derived from <a href="/wiki/%CE%92-lipotropin" class="mw-redirect" title="Β-lipotropin">β-lipotropin</a>, which is produced in the <a href="/wiki/Pituitary_gland" title="Pituitary gland">pituitary gland</a> from a larger peptide precursor, <a href="/wiki/Proopiomelanocortin" title="Proopiomelanocortin">proopiomelanocortin</a> (POMC).<sup id="cite_ref-:2_7-0" class="reference"><a href="#cite_note-:2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> POMC is cleaved into two neuropeptides, <a href="/wiki/Adrenocorticotropic_hormone" title="Adrenocorticotropic hormone">adrenocorticotropic hormone</a> (ACTH) and β-lipotropin.<sup id="cite_ref-:0_8-0" class="reference"><a href="#cite_note-:0-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> The formation of β-endorphin is then the result of cleavage of the C-terminal region of β-lipotropin, producing a 31 amino acid-long neuropeptide with an alpha-helical secondary structure. However, POMC also gives rise to other peptide hormones, including α- and γ-<a href="/wiki/Melanocyte-stimulating_hormone" title="Melanocyte-stimulating hormone">melanocyte-stimulating hormone</a> (MSH), resulting from intracellular processing by internal enzymes known as <a href="/wiki/Proprotein_convertase" title="Proprotein convertase">prohormone convertases</a>. </p><p>A significant factor that differentiates β-endorphin from other endogenous opioids is its <a href="/wiki/Binding_affinity" class="mw-redirect" title="Binding affinity">high affinity</a> for and lasting effect on <a href="/wiki/%CE%9C-opioid_receptors" class="mw-redirect" title="Μ-opioid receptors">μ-opioid receptors</a>.<sup id="cite_ref-:2_7-1" class="reference"><a href="#cite_note-:2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> The structure of β-endorphin in part accounts for this through its resistance to <a href="/wiki/Proteolytic_enzyme" class="mw-redirect" title="Proteolytic enzyme">proteolytic enzymes</a>, as its secondary structure makes it less vulnerable to degradation.<sup id="cite_ref-:2_7-2" class="reference"><a href="#cite_note-:2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Beta_Endorphin-_Gene_to_Product_Formation_Diagram.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/42/Beta_Endorphin-_Gene_to_Product_Formation_Diagram.jpg/220px-Beta_Endorphin-_Gene_to_Product_Formation_Diagram.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/42/Beta_Endorphin-_Gene_to_Product_Formation_Diagram.jpg/330px-Beta_Endorphin-_Gene_to_Product_Formation_Diagram.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/42/Beta_Endorphin-_Gene_to_Product_Formation_Diagram.jpg/440px-Beta_Endorphin-_Gene_to_Product_Formation_Diagram.jpg 2x" data-file-width="960" data-file-height="720" /></a><figcaption>This diagram depicts the formation of β-endorphin from the <a href="/wiki/Proopiomelanocortin" title="Proopiomelanocortin">proopiomelanocortin</a> gene in the pituitary gland. Portions of the second and third exon of this gene make up the proopiomelanocortin protein. The cleavage of the C-terminal end of this protein produces β-lipotropin, which is then cleaved again to form β-endorphin. The proopiomelanocortin protein is also a precursor to other neuropeptides and hormones, such as adrenocorticotropic hormone.</figcaption></figure> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Beta_endorphin_AA_label.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/de/Beta_endorphin_AA_label.svg/220px-Beta_endorphin_AA_label.svg.png" decoding="async" width="220" height="87" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/de/Beta_endorphin_AA_label.svg/330px-Beta_endorphin_AA_label.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/de/Beta_endorphin_AA_label.svg/440px-Beta_endorphin_AA_label.svg.png 2x" data-file-width="2403" data-file-height="951" /></a><figcaption>A skeletal diagram showing the amino acid sequence of <a href="/wiki/Beta-endorphin" class="mw-redirect" title="Beta-endorphin">beta-endorphin</a> with each amino acid labeled.</figcaption></figure> <div style="clear:both;" class=""></div> <div class="mw-heading mw-heading2"><h2 id="Function_and_effects">Function and effects</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%CE%92-Endorphin&action=edit&section=2" title="Edit section: Function and effects"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>β-Endorphin function is said to be divided into two main categories: local function and global function. Global function of β-endorphin is related to decreasing bodily stress and maintaining homeostasis resulting in pain management, reward effects, and behavioral stability. β-Endorphin in global pathways diffuse to different parts of the body through cerebral spinal fluid in the spinal cord, allowing for β-endorphin release to affect the peripheral nervous system. Localized function of β-endorphin results in release of β-endorphin in different brain regions such as the amygdala or the hypothalamus.<sup id="cite_ref-:1_6-1" class="reference"><a href="#cite_note-:1-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> The two main methods by which β-endorphin is utilized in the body are peripheral hormonal action<sup id="cite_ref-:6_9-0" class="reference"><a href="#cite_note-:6-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> and neuroregulation. It is considered to act both as a <a href="/wiki/Neurotransmitter" title="Neurotransmitter">neurotransmitter</a> and a <a href="/wiki/Neuromodulator" class="mw-redirect" title="Neuromodulator">neuromodulator</a> since it produces effects on distant targets that have increased stability and longevity when compared to other neurotransmitters.<sup id="cite_ref-Pilozzi2020_5-1" class="reference"><a href="#cite_note-Pilozzi2020-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> β-endorphin and other <a href="/wiki/Enkephalin" title="Enkephalin">enkephalins</a> are often released with <a href="/wiki/ACTH" class="mw-redirect" title="ACTH">ACTH</a> to modulate hormone system functioning. Neuroregulation by β-endorphin occurs through interference with the function of another neuropeptide, either by direct inhibition of neuropeptide release or induction of a signaling cascade that reduces a neuropeptide's effects.<sup id="cite_ref-:0_8-1" class="reference"><a href="#cite_note-:0-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Opioid_agonist">Opioid agonist</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%CE%92-Endorphin&action=edit&section=3" title="Edit section: Opioid agonist"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>β-Endorphin is an agonist of the <a href="/wiki/Opioid_receptor" title="Opioid receptor">opioid receptors</a>; it preferentially binds to the <a href="/wiki/%CE%9C-opioid_receptor" title="Μ-opioid receptor">μ-opioid receptor</a>.<sup id="cite_ref-NHM-Beta-endorphin_1-4" class="reference"><a href="#cite_note-NHM-Beta-endorphin-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Evidence suggests that it serves as a primary endogenous <a href="/wiki/Ligand" title="Ligand">ligand</a> for the <a href="/wiki/%CE%9C-opioid_receptor" title="Μ-opioid receptor">μ-opioid receptor</a>,<sup id="cite_ref-NHM-Beta-endorphin_1-5" class="reference"><a href="#cite_note-NHM-Beta-endorphin-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-IUPHAR_μ-opioid_receptor_10-0" class="reference"><a href="#cite_note-IUPHAR_μ-opioid_receptor-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> the same receptor to which the chemicals extracted from <a href="/wiki/Opium" title="Opium">opium</a>, such as <a href="/wiki/Morphine" title="Morphine">morphine</a>, derive their <a href="/wiki/Analgesic" title="Analgesic">analgesic</a> properties. β-Endorphin has the highest binding affinity of any endogenous opioid for the μ-opioid receptor.<sup id="cite_ref-NHM-Beta-endorphin_1-6" class="reference"><a href="#cite_note-NHM-Beta-endorphin-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:2_7-3" class="reference"><a href="#cite_note-:2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-IUPHAR_μ-opioid_receptor_10-1" class="reference"><a href="#cite_note-IUPHAR_μ-opioid_receptor-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> Opioid receptors are a class of <a href="/wiki/G_protein%E2%80%93coupled_receptor" class="mw-redirect" title="G protein–coupled receptor">G-protein coupled receptors</a>, such that when β-endorphin or another opioid binds, a signaling cascade is induced in the cell.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> Acetylation of the N-terminus of β-endorphin, however, inactivates the neuropeptide, preventing it from binding to its receptor.<sup id="cite_ref-:2_7-4" class="reference"><a href="#cite_note-:2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> The opioid receptors are distributed throughout the central nervous system and within the peripheral tissue of neural and non-neural origin. They are also located in high concentrations in the <a href="/wiki/Periaqueductal_gray" title="Periaqueductal gray">periaqueductal gray</a>, <a href="/wiki/Locus_coeruleus" title="Locus coeruleus">locus coeruleus</a>, and the <a href="/wiki/Rostral_ventromedial_medulla" title="Rostral ventromedial medulla">rostral ventromedial medulla</a>.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Voltage-dependent_calcium_channel" class="mw-redirect" title="Voltage-dependent calcium channel">Voltage-dependent calcium channels</a> (VDCCs) are important membrane proteins that mediate the depolarization of neurons, and play a major role in promoting the release of neurotransmitters. When endorphin molecules bind to opioid receptors, G proteins activate and dissociate into their constituent Gα and Gβγ sub-units. The Gβγ sub-unit binds to the intracellular loop between the two trans-membrane helices of the VDCC. When the sub-unit binds to the voltage-dependent calcium channel, it produces a voltage-dependent block, which inhibits the channel, preventing the flow of calcium ions into the neuron. Embedded in the cell membrane is also the <a href="/wiki/G_protein-coupled_inwardly-rectifying_potassium_channel" class="mw-redirect" title="G protein-coupled inwardly-rectifying potassium channel">G protein-coupled inwardly-rectifying potassium channel</a>. When a Gβγ or Gα(GTP) molecule binds to the C-terminus of the potassium channel, it becomes active, and potassium ions are pumped out of the neuron.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> The activation of the potassium channel and subsequent deactivation of the calcium channel causes membrane <a href="/wiki/Hyperpolarization_(biology)" title="Hyperpolarization (biology)">hyperpolarization</a>. This is when there is a change in the membrane's potential, so that it becomes more negative. The reduction in calcium ions causes a reduction of neurotransmitter release because calcium is essential for this event to occur.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> This means that neurotransmitters such as <a href="/wiki/Glutamate" class="mw-redirect" title="Glutamate">glutamate</a> and <a href="/wiki/Substance_P" title="Substance P">substance P</a> cannot be released from the presynaptic terminal of the neurons. Substance P is a believed to help sensitize postsynaptic neurons to glutamate, aiding in the transmission of pain signals from periphery nerves to the brain.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> These neurotransmitters are vital in the transmission of pain, and as β-Endorphin reduces the release of these substances, there is a strong analgesic effect. </p> <div class="mw-heading mw-heading3"><h3 id="Pain_management">Pain management</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%CE%92-Endorphin&action=edit&section=4" title="Edit section: Pain management"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>β-Endorphin has been primarily studied for its influence on <a href="/wiki/Nociception" title="Nociception">nociception</a> (i.e., <a href="/wiki/Pain" title="Pain">pain</a> perception). β-endorphin modulates pain perception both in the <a href="/wiki/Central_nervous_system" title="Central nervous system">central nervous system</a> and the <a href="/wiki/Peripheral_nervous_system" title="Peripheral nervous system">peripheral nervous system</a>. When pain is perceived, pain receptors (<a href="/wiki/Nociceptor" title="Nociceptor">nociceptors</a>) send signals to the dorsal horn of the <a href="/wiki/Spinal_cord" title="Spinal cord">spinal cord</a> and then up to the <a href="/wiki/Hypothalamus" title="Hypothalamus">hypothalamus</a> through the release of a <a href="/wiki/Neuropeptide" title="Neuropeptide">neuropeptide</a> called <a href="/wiki/Substance_P" title="Substance P">substance P</a>.<sup id="cite_ref-:0_8-2" class="reference"><a href="#cite_note-:0-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:1_6-2" class="reference"><a href="#cite_note-:1-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:4_17-0" class="reference"><a href="#cite_note-:4-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:5_18-0" class="reference"><a href="#cite_note-:5-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> In the <a href="/wiki/Peripheral_nervous_system" title="Peripheral nervous system">peripheral nervous system</a>, this signal causes the recruitment of <a href="/wiki/T_lymphocytes" class="mw-redirect" title="T lymphocytes">T-lymphocytes</a>, white blood cells of the immune system, to the area where pain was perceived.<sup id="cite_ref-:5_18-1" class="reference"><a href="#cite_note-:5-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> T-lymphocytes release β-endorphin in this localized region, allowing it to bind to opioid receptors, causing direct inhibition of substance P.<sup id="cite_ref-:5_18-2" class="reference"><a href="#cite_note-:5-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> In the <a href="/wiki/Central_nervous_system" title="Central nervous system">central nervous system</a>, β-endorphin binds to opioid receptors in the dorsal root and inhibits the release of substance P in the spinal cord, reducing the number of excitatory pain signals sent to the brain.<sup id="cite_ref-:5_18-3" class="reference"><a href="#cite_note-:5-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:4_17-1" class="reference"><a href="#cite_note-:4-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> The hypothalamus responds to the pain signal by releasing β-endorphin through the <a href="/wiki/Periaqueductal_grey" class="mw-redirect" title="Periaqueductal grey">periaqueductal grey</a> network, which mainly acts to inhibit the release of <a href="/wiki/GABA" title="GABA">GABA</a>, a <a href="/wiki/Neurotransmitter" title="Neurotransmitter">neurotransmitter</a> which prevents the release of <a href="/wiki/Dopamine" title="Dopamine">dopamine</a>.<sup id="cite_ref-:0_8-3" class="reference"><a href="#cite_note-:0-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:4_17-2" class="reference"><a href="#cite_note-:4-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> Thus, the inhibition of GABA release by β-endorphin allows for a greater release of dopamine, in part contributing to the analgesic effect of β-endorphin.<sup id="cite_ref-:0_8-4" class="reference"><a href="#cite_note-:0-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:4_17-3" class="reference"><a href="#cite_note-:4-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> The combination of these pathways reduces pain sensation, allowing for the body to stop a pain impulse once it has been sent. </p><p>β-Endorphin has approximately 18 to 33 times the analgesic potency of <a href="/wiki/Morphine" title="Morphine">morphine</a>,<sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> though its hormonal effect is species dependent.<sup id="cite_ref-:6_9-1" class="reference"><a href="#cite_note-:6-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Exercise">Exercise</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%CE%92-Endorphin&action=edit&section=5" title="Edit section: Exercise"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Neurobiological_effects_of_physical_exercise#β-Endorphin" title="Neurobiological effects of physical exercise">Neurobiological effects of physical exercise § β-Endorphin</a></div> <p>β-Endorphin release in response to exercise has been known and studied since at least the 1980s.<sup id="cite_ref-pmid6091217_21-0" class="reference"><a href="#cite_note-pmid6091217-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> Studies have demonstrated that serum concentrations of endogenous opioids, in particular β-endorphin and <a href="/wiki/%CE%92-lipotropin" class="mw-redirect" title="Β-lipotropin">β-lipotropin</a>, increase in response to both acute exercise and training.<sup id="cite_ref-pmid6091217_21-1" class="reference"><a href="#cite_note-pmid6091217-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> The release of β-endorphin during exercise is associated with a phenomenon colloquially known in popular culture as a <i><a href="/wiki/Runner%27s_high" title="Runner's high">runner's high</a></i>.<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Sunlight">Sunlight</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%CE%92-Endorphin&action=edit&section=6" title="Edit section: Sunlight"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>There is evidence that β-endorphin is released in response to <a href="/wiki/Ultraviolet" title="Ultraviolet">ultraviolet radiation</a>, either through sun exposure or artificial tanning.<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> This is thought to contribute to <a href="/wiki/Tanning_dependence" title="Tanning dependence">addiction behavior</a> among excessive <a href="/wiki/Sun_tanning" title="Sun tanning">sunbathers</a> and users of <a href="/wiki/Indoor_tanning" title="Indoor tanning">artificial tanning</a> despite health risks. </p> <div class="mw-heading mw-heading3"><h3 id="Addiction">Addiction</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%CE%92-Endorphin&action=edit&section=7" title="Edit section: Addiction"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Studies suggest that β-Endorphins could be correlated with <a href="/wiki/Alcohol_addiction" class="mw-redirect" title="Alcohol addiction">alcohol addiction</a> due to their involvement with the brain's <a href="/wiki/Mesolimbic_reward_system" class="mw-redirect" title="Mesolimbic reward system">mesolimbic reward system</a>.<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> Alcohol consumption causes an increase in the release of β-Endorphins within the regions of the brain's reward system. Regular and long-term consumption of alcohol consequently leads to a deficit in the levels of β-Endorphins that requires continuous consumption of alcohol to replenish. Individuals with a deficiency of β-Endorphins due to genetics may be more vulnerable to alcohol addiction as a result.<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Mechanism_of_action">Mechanism of action</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%CE%92-Endorphin&action=edit&section=8" title="Edit section: Mechanism of action"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>β-Endorphin acts as an agonist that binds to various types of <a href="/wiki/G_protein%E2%80%93coupled_receptor" class="mw-redirect" title="G protein–coupled receptor">G protein–coupled receptors</a> (GPCRs), most notably to the mu, delta, and kappa opioid receptors. Binding to these receptors prevents the release of Substance P in the case of the <a href="/wiki/Peripheral_nervous_system" title="Peripheral nervous system">peripheral nervous system</a>, and the inhibitory neurotransmitter, GABA, in the <a href="/wiki/Central_nervous_system" title="Central nervous system">central nervous system</a><sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> The receptors are responsible for supra-spinal analgesia.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Identifying_reliable_sources_(medicine)" title="Wikipedia:Identifying reliable sources (medicine)"><span title="Material near this tag needs references to reliable medical sources. (January 2019)">medical citation needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%CE%92-Endorphin&action=edit&section=9" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>β-Endorphin was discovered in camel pituitary extracts by C.H. Li and David Chung.<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> The primary structure of β-endorphin was unknowingly determined 10 years earlier, when Li and colleagues analyzed the sequence of another neuropeptide produced in the pituitary gland, <a href="/wiki/%CE%93-lipotropin" class="mw-redirect" title="Γ-lipotropin">γ-lipotropin</a>. They noticed that the C-terminus region of this neuropeptide was similar to that of some <a href="/wiki/Enkephalin" title="Enkephalin">enkephalins</a>, suggesting that it may have a similar function to these neuropeptides. The C-terminal sequence of γ-lipotropin turned out to be the primary sequence of the β-endorphin.<sup id="cite_ref-:2_7-5" class="reference"><a href="#cite_note-:2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%CE%92-Endorphin&action=edit&section=10" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 33em;"> <ol class="references"> <li id="cite_note-NHM-Beta-endorphin-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-NHM-Beta-endorphin_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-NHM-Beta-endorphin_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-NHM-Beta-endorphin_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-NHM-Beta-endorphin_1-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-NHM-Beta-endorphin_1-4"><sup><i><b>e</b></i></sup></a> <a href="#cite_ref-NHM-Beta-endorphin_1-5"><sup><i><b>f</b></i></sup></a> <a href="#cite_ref-NHM-Beta-endorphin_1-6"><sup><i><b>g</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFMalenkaNestlerHyman2009" class="citation book cs1">Malenka RC, Nestler EJ, Hyman SE (2009). "Chapter 7: Neuropeptides". In Sydor A, Brown RY (eds.). <i>Molecular Neuropharmacology: A Foundation for Clinical Neuroscience</i> (2nd ed.). New York: McGraw-Hill Medical. pp. 184, 190, 192. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-07-148127-4" title="Special:BookSources/978-0-07-148127-4"><bdi>978-0-07-148127-4</bdi></a>. <q>Opioid Peptides<br />β-Endorphin (also a pituitary hormone) ...<br />Opioid peptides are encoded by three distinct genes. These precursors include POMC, from which the opioid peptide β-endorphin and several nonopioid peptides are derived, as discussed earlier; proenkephalin, from which met-enkephalin and leu-enkephalin are derived; and prodynorphin, which is the precursor of dynorphin and related peptides. Although they come from different precursors, opioid peptides share significant amino acid sequence identity. Specifically, all of the well-validated endogenous opioids contain the same four N-terminal amino acids (Tyr-Gly-Gly-Phe), followed by either Met or Leu ... Among endogenous opioid peptides, β-endorphin binds preferentially to μ receptors. ... Shared opioid peptide sequences. Although they vary in length from as few as five amino acids (enkephalins) to as many as 31 (β-endorphin), the endogenous opioid peptides shown here contain a shared N-terminal sequence followed by either Met or Leu.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Chapter+7%3A+Neuropeptides&rft.btitle=Molecular+Neuropharmacology%3A+A+Foundation+for+Clinical+Neuroscience&rft.place=New+York&rft.pages=184%2C+190%2C+192&rft.edition=2nd&rft.pub=McGraw-Hill+Medical&rft.date=2009&rft.isbn=978-0-07-148127-4&rft.aulast=Malenka&rft.aufirst=RC&rft.au=Nestler%2C+EJ&rft.au=Hyman%2C+SE&rfr_id=info%3Asid%2Fen.wikipedia.org%3A%CE%92-Endorphin" class="Z3988"></span></span> </li> <li id="cite_note-Endogenous_opioid_families_-_2012_review-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-Endogenous_opioid_families_-_2012_review_2-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLiLefeverMuthuBidlack2012" class="citation journal cs1">Li Y, Lefever MR, Muthu D, Bidlack JM, Bilsky EJ, Polt R (February 2012). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3306179">"Opioid glycopeptide analgesics derived from endogenous enkephalins and endorphins"</a>. <i><a href="/wiki/Future_Medicinal_Chemistry" title="Future Medicinal Chemistry">Future Medicinal Chemistry</a></i>. <b>4</b> (2). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3306179/table/T1/">Table 1: Endogenous opioid peptides</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.4155%2Ffmc.11.195">10.4155/fmc.11.195</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3306179">3306179</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/22300099">22300099</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Future+Medicinal+Chemistry&rft.atitle=Opioid+glycopeptide+analgesics+derived+from+endogenous+enkephalins+and+endorphins&rft.volume=4&rft.issue=2&rft.pages=Table+1%3A+Endogenous+opioid+peptides&rft.date=2012-02&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC3306179%23id-name%3DPMC&rft_id=info%3Apmid%2F22300099&rft_id=info%3Adoi%2F10.4155%2Ffmc.11.195&rft.aulast=Li&rft.aufirst=Y&rft.au=Lefever%2C+MR&rft.au=Muthu%2C+D&rft.au=Bidlack%2C+JM&rft.au=Bilsky%2C+EJ&rft.au=Polt%2C+R&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC3306179&rfr_id=info%3Asid%2Fen.wikipedia.org%3A%CE%92-Endorphin" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPilozziCarroHuang2020" class="citation journal cs1">Pilozzi A, Carro C, Huang X (December 2020). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7796446">"Roles of β-Endorphin in Stress, Behavior, Neuroinflammation, and Brain Energy Metabolism"</a>. <i>International Journal of Molecular Sciences</i>. <b>22</b> (1): 338. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.3390%2Fijms22010338">10.3390/ijms22010338</a></span>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7796446">7796446</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/33396962">33396962</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=International+Journal+of+Molecular+Sciences&rft.atitle=Roles+of+%CE%B2-Endorphin+in+Stress%2C+Behavior%2C+Neuroinflammation%2C+and+Brain+Energy+Metabolism&rft.volume=22&rft.issue=1&rft.pages=338&rft.date=2020-12&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC7796446%23id-name%3DPMC&rft_id=info%3Apmid%2F33396962&rft_id=info%3Adoi%2F10.3390%2Fijms22010338&rft.aulast=Pilozzi&rft.aufirst=A&rft.au=Carro%2C+C&rft.au=Huang%2C+X&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC7796446&rfr_id=info%3Asid%2Fen.wikipedia.org%3A%CE%92-Endorphin" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" 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Retrieved <span class="nowrap">26 October</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Peptides&rft.atitle=Deficit+in+beta-endorphin+peptide+and+tendency+to+alcohol+abuse&rft.volume=26&rft.issue=4&rft.pages=702&rft.date=2005-04&rft_id=info%3Adoi%2F10.1016%2Fj.peptides.2004.11.010&rft_id=info%3Apmid%2F15752586&rft.aulast=Zalewska-Kaszubska&rft.aufirst=Jadwiga&rft.au=Czarnecka%2C+El%C5%BCbieta&rft_id=https%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fpii%2FS0196978104005091%23%3A~%3Atext%3DBeta%252Dendorphin%2520is%2520functionally%2520connected%2Cdrugs%2520to%2520restore%2520this%2520equilibrium.&rfr_id=info%3Asid%2Fen.wikipedia.org%3A%CE%92-Endorphin" class="Z3988"></span></span> </li> <li id="cite_note-25"><span class="mw-cite-backlink"><b><a href="#cite_ref-25">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFZalewska-KaszubskaCzarnecka2005" class="citation journal cs1">Zalewska-Kaszubska J, Czarnecka E (April 2005). <a rel="nofollow" class="external text" href="https://www.sciencedirect.com/science/article/pii/S0196978104005091#:~:text=Beta%2Dendorphin%20is%20functionally%20connected,drugs%20to%20restore%20this%20equilibrium.">"Deficit in beta-endorphin peptide and tendency to alcohol abuse"</a>. <i>Peptides</i>. <b>26</b> (4): 701–705. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.peptides.2004.11.010">10.1016/j.peptides.2004.11.010</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/15752586">15752586</a><span class="reference-accessdate">. Retrieved <span class="nowrap">26 October</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Peptides&rft.atitle=Deficit+in+beta-endorphin+peptide+and+tendency+to+alcohol+abuse&rft.volume=26&rft.issue=4&rft.pages=701-705&rft.date=2005-04&rft_id=info%3Adoi%2F10.1016%2Fj.peptides.2004.11.010&rft_id=info%3Apmid%2F15752586&rft.aulast=Zalewska-Kaszubska&rft.aufirst=Jadwiga&rft.au=Czarnecka%2C+El%C5%BCbieta&rft_id=https%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fpii%2FS0196978104005091%23%3A~%3Atext%3DBeta%252Dendorphin%2520is%2520functionally%2520connected%2Cdrugs%2520to%2520restore%2520this%2520equilibrium.&rfr_id=info%3Asid%2Fen.wikipedia.org%3A%CE%92-Endorphin" class="Z3988"></span></span> </li> <li id="cite_note-26"><span class="mw-cite-backlink"><b><a href="#cite_ref-26">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGraefeRahimiShamim2024" class="citation journal cs1">Graefe BS, Rahimi N, Shamim SM (2024). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/books/NBK554583/">"Biochemistry, Substance P"</a>. <i>National Institute of Health</i>. StatPearls. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/32119470">32119470</a><span class="reference-accessdate">. Retrieved <span class="nowrap">10 November</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=National+Institute+of+Health&rft.atitle=Biochemistry%2C+Substance+P&rft.date=2024&rft_id=info%3Apmid%2F32119470&rft.aulast=Graefe&rft.aufirst=B.+Steven&rft.au=Rahimi%2C+Nader&rft.au=Shamim%2C+S.+Mohiuddin&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fbooks%2FNBK554583%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3A%CE%92-Endorphin" class="Z3988"></span></span> </li> <li id="cite_note-27"><span class="mw-cite-backlink"><b><a href="#cite_ref-27">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLiChung1976" class="citation journal cs1">Li CH, Chung D (April 1976). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC430217">"Isolation and structure of an untriakontapeptide with opiate activity from camel pituitary glands"</a>. <i>Proceedings of the National Academy of Sciences of the United States of America</i>. <b>73</b> (4): 1145–8. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1976PNAS...73.1145L">1976PNAS...73.1145L</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1073%2Fpnas.73.4.1145">10.1073/pnas.73.4.1145</a></span>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC430217">430217</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/1063395">1063395</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Proceedings+of+the+National+Academy+of+Sciences+of+the+United+States+of+America&rft.atitle=Isolation+and+structure+of+an+untriakontapeptide+with+opiate+activity+from+camel+pituitary+glands&rft.volume=73&rft.issue=4&rft.pages=1145-8&rft.date=1976-04&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC430217%23id-name%3DPMC&rft_id=info%3Apmid%2F1063395&rft_id=info%3Adoi%2F10.1073%2Fpnas.73.4.1145&rft_id=info%3Abibcode%2F1976PNAS...73.1145L&rft.aulast=Li&rft.aufirst=CH&rft.au=Chung%2C+D&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC430217&rfr_id=info%3Asid%2Fen.wikipedia.org%3A%CE%92-Endorphin" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%CE%92-Endorphin&action=edit&section=11" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/16132316">CID 16132316</a> from <a href="/wiki/PubChem" title="PubChem">PubChem</a> – β-endorphin</li> <li><a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/3081525">CID 3081525</a> from <a href="/wiki/PubChem" title="PubChem">PubChem</a> – β-endorphin (1-9)</li> <li><a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/133304">CID 133304</a> from <a href="/wiki/PubChem" title="PubChem">PubChem</a> – β-endorphin (2-9)</li> <li><a rel="nofollow" class="external text" href="https://meshb.nlm.nih.gov/record/ui?name=%CE%B2-endorphin">β-endorphin</a> at the U.S. National 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class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 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title="Neuropeptide">neuropeptides</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Hormones</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><i>see <a href="/wiki/Template:Hormones" title="Template:Hormones">hormones</a></i></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Opioid_peptide" title="Opioid peptide">Opioid peptides</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:12em"><a href="/wiki/Dynorphin" title="Dynorphin">Dynorphins</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dynorphin_A" title="Dynorphin A">Dynorphin A</a> <ul><li><a href="/wiki/Dynorphin_A1%E2%80%938" class="mw-redirect" title="Dynorphin A1–8">Dynorphin A<sub>1–8</sub></a></li></ul></li> <li><a href="/wiki/Dynorphin_B" title="Dynorphin B">Dynorphin B</a></li> <li><a href="/wiki/Big_dynorphin" title="Big dynorphin">Big dynorphin</a></li> <li><a href="/wiki/Leumorphin" title="Leumorphin">Leumorphin</a></li> <li><a href="/wiki/Alpha-Neoendorphin" class="mw-redirect" title="Alpha-Neoendorphin">α-Neoendorphin</a></li> <li><a href="/wiki/Beta-Neoendorphin" class="mw-redirect" title="Beta-Neoendorphin">β-Neoendorphin</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:12em"><a href="/wiki/Endomorphin" title="Endomorphin">Endomorphins</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Endomorphin-1" title="Endomorphin-1">Endomorphin-1</a></li> <li><a href="/wiki/Endomorphin-2" title="Endomorphin-2">Endomorphin-2</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:12em"><a href="/wiki/Endorphins" title="Endorphins">Endorphins</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alpha-Endorphin" class="mw-redirect" title="Alpha-Endorphin">α-Endorphin</a></li> <li><a href="/wiki/Beta-Endorphin" class="mw-redirect" title="Beta-Endorphin">β-Endorphin</a></li> <li><a href="/wiki/Gamma-Endorphin" class="mw-redirect" title="Gamma-Endorphin">γ-Endorphin</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:12em"><a href="/wiki/Enkephalin" title="Enkephalin">Enkephalins</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Met-enkephalin" title="Met-enkephalin">Met-enkephalin</a></li> <li><a href="/wiki/Leu-enkephalin" title="Leu-enkephalin">Leu-enkephalin</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:12em">Others</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Adrenorphin" title="Adrenorphin">Adrenorphin</a></li> <li><a href="/wiki/Amidorphin" title="Amidorphin">Amidorphin</a></li> <li><a href="/wiki/Hemorphin" title="Hemorphin">Hemorphin</a> <ul><li><a href="/wiki/Hemorphin-4" title="Hemorphin-4">Hemorphin-4</a></li></ul></li> <li><a href="/wiki/Nociceptin" title="Nociceptin">Nociceptin</a></li> <li><a href="/wiki/Opiorphin" title="Opiorphin">Opiorphin</a></li> <li><a href="/wiki/Spinorphin" title="Spinorphin">Spinorphin</a></li> <li><a href="/wiki/Valorphin" title="Valorphin">Valorphin</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other<br /> neuropeptides</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:12em"><a href="/wiki/Kinin" title="Kinin">Kinins</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <dl><dd><a href="/wiki/Bradykinin" title="Bradykinin">Bradykinins</a></dd> <dd><a href="/wiki/Tachykinin_peptides" title="Tachykinin peptides">Tachykinins</a>: mammal <ul><li><a href="/wiki/Substance_P" title="Substance P">Substance P</a></li> <li><a href="/wiki/Neurokinin_A" title="Neurokinin A">Neurokinin A</a></li> <li><a href="/wiki/Neurokinin_B" title="Neurokinin B">Neurokinin B</a></li></ul></dd> <dd>amphibian <ul><li><a href="/wiki/Kassinin" title="Kassinin">Kassinin</a></li> <li><a href="/wiki/Physalaemin" title="Physalaemin">Physalaemin</a></li></ul></dd></dl> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:12em">Neuromedins</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Neuromedin_B" title="Neuromedin B">B</a></li> <li><a href="/wiki/Neuromedin_N" title="Neuromedin N">N</a></li> <li><a href="/wiki/Neuromedin_S" title="Neuromedin S">S</a></li> <li><a href="/wiki/Neuromedin_U" title="Neuromedin U">U</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:12em"><a href="/wiki/Orexin" title="Orexin">Orexins</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Orexin-A" title="Orexin-A">A</a></li> <li><a href="/wiki/Orexin_B" class="mw-redirect" title="Orexin B">B</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:12em">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Angiotensin" title="Angiotensin">Angiotensin</a></li> <li><a href="/wiki/Bombesin" title="Bombesin">Bombesin</a></li> <li><a href="/wiki/Calcitonin_gene-related_peptide" title="Calcitonin gene-related peptide">Calcitonin gene-related peptide</a></li> <li><a href="/wiki/Carnosine" title="Carnosine">Carnosine</a></li> <li><a href="/wiki/Cocaine_and_amphetamine_regulated_transcript" title="Cocaine and amphetamine regulated transcript">Cocaine- and amphetamine-regulated transcript</a></li> <li><a href="/wiki/Delta-sleep-inducing_peptide" title="Delta-sleep-inducing peptide">Delta-sleep-inducing peptide</a></li> <li><a href="/wiki/FMRFamide" title="FMRFamide">FMRFamide</a></li> <li><a href="/wiki/Galanin" title="Galanin">Galanin</a></li> <li><a href="/wiki/Galanin-like_peptide" title="Galanin-like peptide">Galanin-like peptide</a></li> <li><a href="/wiki/Gastrin-releasing_peptide" title="Gastrin-releasing peptide">Gastrin-releasing peptide</a></li> <li><a href="/wiki/Ghrelin" title="Ghrelin">Ghrelin</a></li> <li><a href="/w/index.php?title=Neuropeptide_AF&action=edit&redlink=1" class="new" title="Neuropeptide AF (page does not exist)">Neuropeptide AF</a></li> <li><a href="/wiki/Neuropeptide_FF" title="Neuropeptide FF">Neuropeptide FF</a></li> <li><a href="/w/index.php?title=Neuropeptide_SF&action=edit&redlink=1" class="new" title="Neuropeptide SF (page does not exist)">Neuropeptide SF</a></li> <li><a href="/w/index.php?title=Neuropeptide_VF&action=edit&redlink=1" class="new" title="Neuropeptide VF (page does not exist)">Neuropeptide VF</a></li> <li><a href="/wiki/Neuropeptide_S" title="Neuropeptide S">Neuropeptide S</a></li> <li><a href="/wiki/Neuropeptide_Y" title="Neuropeptide Y">Neuropeptide Y</a></li> <li><a href="/wiki/Neurophysins" title="Neurophysins">Neurophysins</a></li> <li><a href="/wiki/Neurotensin" title="Neurotensin">Neurotensin</a></li> <li><a href="/wiki/Pancreatic_polypeptide" title="Pancreatic polypeptide">Pancreatic polypeptide</a></li> <li><a href="/wiki/Pituitary_adenylate_cyclase-activating_peptide" title="Pituitary adenylate cyclase-activating peptide">Pituitary adenylate cyclase-activating peptide</a></li> <li><a href="/wiki/RVD-Hp%CE%B1" title="RVD-Hpα">RVD-Hpα</a></li> <li><a href="/wiki/VGF" title="VGF">VGF</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Opioid_receptor_modulators" style="padding:3px"><table class="nowraplinks mw-collapsible mw-collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Opioid_receptor_modulators" title="Template:Opioid receptor modulators"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Opioid_receptor_modulators" title="Template talk:Opioid receptor modulators"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Opioid_receptor_modulators" title="Special:EditPage/Template:Opioid receptor modulators"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Opioid_receptor_modulators" style="font-size:114%;margin:0 4em"><a href="/wiki/Opioid_receptor" title="Opioid receptor">Opioid receptor</a> <a href="/wiki/Receptor_modulator" title="Receptor modulator">modulators</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;"><a href="/wiki/%CE%9C-opioid_receptor" title="Μ-opioid receptor">μ-opioid</a><br />(MOR)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Agonists(abridged;_full_list)" scope="row" class="navbox-group" style="width:1%">Agonists<br />(abridged;<br /> <a href="/wiki/List_of_opioids" title="List of opioids">full list</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/3-HO-PCP" title="3-HO-PCP">3-HO-PCP</a></li> <li><a href="/w/index.php?title=7-Acetoxymitragynine&action=edit&redlink=1" class="new" title="7-Acetoxymitragynine (page does not exist)">7-Acetoxymitragynine</a></li> <li><a href="/wiki/7-Hydroxymitragynine" title="7-Hydroxymitragynine">7-Hydroxymitragynine</a></li> <li><a href="/w/index.php?title=%CE%A8-Akuammigine&action=edit&redlink=1" class="new" title="Ψ-Akuammigine (page does not exist)">ψ-Akuammigine</a></li> <li><a href="/wiki/Chlornaltrexamine" class="mw-redirect" title="Chlornaltrexamine">α-Chlornaltrexamine</a></li> <li><a href="/w/index.php?title=Alpha-Narcotine&action=edit&redlink=1" class="new" title="Alpha-Narcotine (page does not exist)">α-Narcotine</a></li> <li><a href="/wiki/Acetyldihydrocodeine" title="Acetyldihydrocodeine">Acetyldihydrocodeine</a></li> <li><a href="/wiki/Acetylfentanyl" title="Acetylfentanyl">Acetylfentanyl</a></li> <li><a href="/wiki/Acrylfentanyl" title="Acrylfentanyl">Acrylfentanyl</a></li> <li><a href="/wiki/Adrenorphin" title="Adrenorphin">Adrenorphin (metorphamide)</a></li> <li><a href="/wiki/AH-7921" title="AH-7921">AH-7921</a></li> <li><a href="/wiki/Akuammicine" title="Akuammicine">Akuammicine</a></li> <li><a href="/w/index.php?title=Akuammidine&action=edit&redlink=1" class="new" title="Akuammidine (page does not exist)">Akuammidine</a></li> <li><a href="/wiki/Alfentanil" title="Alfentanil">Alfentanil</a></li> <li><a href="/wiki/Anileridine" title="Anileridine">Anileridine</a></li> <li><a href="/wiki/Apparicine" title="Apparicine">Apparicine</a></li> <li><a href="/wiki/Beta-Endorphin" class="mw-redirect" title="Beta-Endorphin">β-Endorphin</a></li> <li><a href="/w/index.php?title=Bovine_adrenal_medullary_peptide-12P&action=edit&redlink=1" class="new" title="Bovine adrenal medullary peptide-12P (page does not exist)">BAM-12P</a></li> <li><a href="/w/index.php?title=Bovine_adrenal_medullary_peptide-18P&action=edit&redlink=1" class="new" title="Bovine adrenal medullary peptide-18P (page does not exist)">BAM-18P</a></li> <li><a href="/w/index.php?title=Bovine_adrenal_medullary_peptide-22P&action=edit&redlink=1" class="new" title="Bovine adrenal medullary peptide-22P (page does not exist)">BAM-22P</a></li> <li><a href="/wiki/Benzhydrocodone" title="Benzhydrocodone">Benzhydrocodone</a></li> <li><a href="/wiki/Benzylmorphine" title="Benzylmorphine">Benzylmorphine</a></li> <li><a href="/wiki/Bezitramide" title="Bezitramide">Bezitramide</a></li> <li><a href="/wiki/Biphalin" title="Biphalin">Biphalin</a></li> <li><a href="/w/index.php?title=BU08070&action=edit&redlink=1" class="new" title="BU08070 (page does not exist)">BU08070</a></li> <li><a href="/wiki/Buprenorphine" title="Buprenorphine">Buprenorphine</a></li> <li><a href="/wiki/Butorphan" class="mw-redirect" title="Butorphan">Butorphan</a></li> <li><a href="/wiki/Butorphanol" title="Butorphanol">Butorphanol</a></li> <li><a href="/wiki/Butyrfentanyl" title="Butyrfentanyl">Butyrfentanyl</a></li> <li><a href="/wiki/BW373U86" title="BW373U86">BW373U86</a></li> <li><a href="/wiki/Carfentanil" title="Carfentanil">Carfentanil</a></li> <li><a href="/wiki/Casokefamide" title="Casokefamide">Casokefamide</a></li> <li><a href="/wiki/Cebranopadol" title="Cebranopadol">Cebranopadol</a></li> <li><a href="/wiki/Chloroxymorphamine" title="Chloroxymorphamine">Chloroxymorphamine</a></li> <li><a href="/wiki/Codeine" title="Codeine">Codeine</a></li> <li><a href="/wiki/DADLE" title="DADLE">DADLE</a></li> <li><a href="/wiki/DAMGO" title="DAMGO">DAMGO (DAGO)</a></li> <li><a href="/wiki/Dermorphin" title="Dermorphin">Dermorphin</a></li> <li><a href="/wiki/Desmetramadol" title="Desmetramadol">Desmetramadol (desmethyltramadol)</a></li> <li><a href="/wiki/Desomorphine" title="Desomorphine">Desomorphine</a></li> <li><a href="/wiki/Dextromoramide" title="Dextromoramide">Dextromoramide</a></li> <li><a href="/wiki/Dextropropoxyphene" title="Dextropropoxyphene">Dextropropoxyphene (propoxyphene)</a></li> <li><a href="/wiki/Dezocine" title="Dezocine">Dezocine</a></li> <li><a href="/wiki/Dimenoxadol" title="Dimenoxadol">Dimenoxadol</a></li> <li><a href="/wiki/Dimethylaminopivalophenone" title="Dimethylaminopivalophenone">Dimethylaminopivalophenone</a></li> <li><a href="/wiki/Eluxadoline" title="Eluxadoline">Eluxadoline</a></li> <li><a href="/wiki/Heroin" title="Heroin">Diamorphine (heroin)</a></li> <li><a href="/wiki/Dihydrocodeine" title="Dihydrocodeine">Dihydrocodeine</a></li> <li><a href="/wiki/Dihydroetorphine" title="Dihydroetorphine">Dihydroetorphine</a></li> <li><a href="/wiki/Dihydromorphine" title="Dihydromorphine">Dihydromorphine</a></li> <li><a href="/wiki/Dinalbuphine_sebacate" title="Dinalbuphine sebacate">Dinalbuphine sebacate</a></li> <li><a href="/wiki/Diphenoxylate" title="Diphenoxylate">Diphenoxylate</a></li> <li><a href="/wiki/Dipipanone" title="Dipipanone">Dipipanone</a></li> <li><a href="/wiki/Dynorphin_A" title="Dynorphin A">Dynorphin A</a></li> <li><a href="/wiki/Embutramide" title="Embutramide">Embutramide</a></li> <li><a href="/wiki/Endomorphin-1" title="Endomorphin-1">Endomorphin-1</a></li> <li><a href="/wiki/Endomorphin-2" title="Endomorphin-2">Endomorphin-2</a></li> <li><a href="/wiki/Eseroline" title="Eseroline">Eseroline</a></li> <li><a href="/wiki/Ethylmorphine" title="Ethylmorphine">Ethylmorphine</a></li> <li><a href="/wiki/Etorphine" title="Etorphine">Etorphine</a></li> <li><a href="/wiki/Fentanyl" title="Fentanyl">Fentanyl</a></li> <li><a href="/wiki/Fluorophen" title="Fluorophen">Fluorophen</a></li> <li><a href="/wiki/Frakefamide" title="Frakefamide">Frakefamide</a></li> <li><a href="/wiki/Furanylfentanyl" title="Furanylfentanyl">Furanylfentanyl</a></li> <li><a href="/wiki/Hemorphin-4" title="Hemorphin-4">Hemorphin-4</a></li> <li><a href="/wiki/Herkinorin" title="Herkinorin">Herkinorin</a></li> <li><a href="/wiki/Hodgkinsine" title="Hodgkinsine">Hodgkinsine</a></li> <li><a href="/wiki/Hydrocodone" title="Hydrocodone">Hydrocodone</a></li> <li><a href="/wiki/Hydromorphinol" title="Hydromorphinol">Hydromorphinol</a></li> <li><a href="/wiki/Hydromorphone" title="Hydromorphone">Hydromorphone</a></li> <li><a href="/wiki/IBNtxA" title="IBNtxA">IBNtxA</a></li> <li><a href="/wiki/Ketamine" title="Ketamine">Ketamine</a></li> <li><a href="/wiki/Ketobemidone" title="Ketobemidone">Ketobemidone</a></li> <li><a href="/wiki/Mitragyna_speciosa" title="Mitragyna speciosa">Kratom</a></li> <li><a href="/wiki/Laudanosine" title="Laudanosine">Laudanosine</a></li> <li><a href="/wiki/Lefetamine" title="Lefetamine">Lefetamine</a></li> <li><a href="/wiki/Leu-enkephalin" title="Leu-enkephalin">Leu-enkephalin</a></li> <li><a href="/wiki/Levacetylmethadol" title="Levacetylmethadol">Levacetylmethadol</a></li> <li><a href="/wiki/Levomethorphan" title="Levomethorphan">Levomethorphan</a></li> <li><a href="/wiki/Levorphanol" title="Levorphanol">Levorphanol</a></li> <li><a href="/w/index.php?title=Lexanopadol&action=edit&redlink=1" class="new" title="Lexanopadol (page does not exist)">Lexanopadol</a></li> <li><a href="/wiki/Loperamide" title="Loperamide">Loperamide</a></li> <li><a href="/wiki/Loxicodegol" class="mw-redirect" title="Loxicodegol">Loxicodegol</a></li> <li><a href="/wiki/LS-115509" title="LS-115509">LS-115509</a></li> <li><a href="/wiki/Matrine" title="Matrine">Matrine</a></li> <li><a href="/wiki/Meptazinol" title="Meptazinol">Meptazinol</a></li> <li><a href="/wiki/Met-enkephalin" title="Met-enkephalin">Met-enkephalin (metenkefalin)</a></li> <li><a href="/wiki/Methadone" title="Methadone">Methadone</a></li> <li><a href="/wiki/Metkefamide" title="Metkefamide">Metkefamide</a></li> <li><a href="/wiki/Metopon" title="Metopon">Metopon</a></li> <li><a href="/wiki/Mitragynine" title="Mitragynine">Mitragynine</a></li> <li><a href="/wiki/Mitragynine_pseudoindoxyl" title="Mitragynine pseudoindoxyl">Mitragynine pseudoindoxyl</a></li> <li><a href="/wiki/Morphiceptin" title="Morphiceptin">Morphiceptin</a></li> <li><a href="/wiki/Morphine" title="Morphine">Morphine</a></li> <li><a href="/wiki/Nalbuphine" title="Nalbuphine">Nalbuphine</a></li> <li><a href="/w/index.php?title=Naloxone_benzoylhydrazone&action=edit&redlink=1" class="new" title="Naloxone benzoylhydrazone (page does not exist)">NalBzOH</a></li> <li><a href="/wiki/Nalmexone" title="Nalmexone">Nalmexone</a></li> <li><a href="/wiki/Naltalimide" title="Naltalimide">Naltalimide</a></li> <li><a href="/w/index.php?title=Neopine&action=edit&redlink=1" class="new" title="Neopine (page does not exist)">Neopine</a></li> <li><a href="/wiki/NFEPP" title="NFEPP">NFEPP</a></li> <li><a href="/wiki/Nicocodeine" title="Nicocodeine">Nicocodeine</a></li> <li><a href="/wiki/Nicodicodine" title="Nicodicodine">Nicodicodine</a></li> <li><a href="/wiki/Nicomorphine" title="Nicomorphine">Nicomorphine</a></li> <li><a href="/wiki/Norketamine" title="Norketamine">Norketamine</a></li> <li><a href="/wiki/Nufenoxole" title="Nufenoxole">Nufenoxole</a></li> <li><a href="/wiki/Octreotide" title="Octreotide">Octreotide</a></li> <li><a href="/wiki/Oliceridine" title="Oliceridine">Oliceridine</a></li> <li><a href="/wiki/Oxycodegol" title="Oxycodegol">Oxycodegol</a></li> <li><a href="/wiki/Oxymorphone-3-methoxynaltrexonazine" title="Oxymorphone-3-methoxynaltrexonazine">OM-3-MNZ</a></li> <li><a href="/wiki/Oripavine" title="Oripavine">Oripavine</a></li> <li><a href="/wiki/Oxycodone" title="Oxycodone">Oxycodone</a></li> <li><a href="/wiki/Oxymorphazone" title="Oxymorphazone">Oxymorphazone</a></li> <li><a href="/w/index.php?title=Oxymorphonazine&action=edit&redlink=1" class="new" title="Oxymorphonazine (page does not exist)">Oxymorphonazine</a></li> <li><a href="/wiki/Oxymorphone" title="Oxymorphone">Oxymorphone</a></li> <li><a href="/w/index.php?title=Oxymorphone_phenylhydrazone&action=edit&redlink=1" class="new" title="Oxymorphone phenylhydrazone (page does not exist)">Oxymorphone phenylhydrazone</a></li> <li><a href="/w/index.php?title=Oxymorphone_p-nitrophenylhydrazone&action=edit&redlink=1" class="new" title="Oxymorphone p-nitrophenylhydrazone (page does not exist)">OxyPNPH</a></li> <li><i><a href="/wiki/Papaver_somniferum" title="Papaver somniferum">Papaver somniferum</a></i> (<a href="/wiki/Opium" title="Opium">opium</a>)</li> <li><a href="/wiki/Pentazocine" title="Pentazocine">Pentazocine</a></li> <li><a href="/wiki/Pericine" title="Pericine">Pericine</a></li> <li><a href="/wiki/Pethidine" title="Pethidine">Pethidine (meperidine)</a></li> <li><a href="/wiki/Phenazocine" title="Phenazocine">Phenazocine</a></li> <li><a href="/wiki/Phencyclidine" title="Phencyclidine">Phencyclidine</a></li> <li><a href="/wiki/Piminodine" title="Piminodine">Piminodine</a></li> <li><a href="/wiki/Piritramide" title="Piritramide">Piritramide</a></li> <li><a href="/w/index.php?title=PL-017&action=edit&redlink=1" class="new" title="PL-017 (page does not exist)">PL-017</a></li> <li><a href="/wiki/Prodine" title="Prodine">Prodine</a></li> <li><a href="/wiki/Propiram" title="Propiram">Propiram</a></li> <li><a href="/wiki/PZM21" title="PZM21">PZM21</a></li> <li><a href="/wiki/Methorphan" title="Methorphan">Racemethorphan</a></li> <li><a href="/wiki/Racemorphan" title="Racemorphan">Racemorphan</a></li> <li><a href="/wiki/Remifentanil" title="Remifentanil">Remifentanil</a></li> <li><a href="/wiki/Salsolinol" title="Salsolinol">Salsolinol</a></li> <li><a href="/wiki/SC-17599" title="SC-17599">SC-17599</a></li> <li><a href="/wiki/Sinomenine" title="Sinomenine">Sinomenine</a></li> <li><a href="/wiki/Sufentanil" title="Sufentanil">Sufentanil</a></li> <li><a href="/wiki/Tapentadol" title="Tapentadol">Tapentadol</a></li> <li><a href="/wiki/Tetrahydropapaveroline" title="Tetrahydropapaveroline">Tetrahydropapaveroline</a></li> <li><a href="/wiki/TH-030418" title="TH-030418">TH-030418</a></li> <li><a href="/wiki/Thebaine" title="Thebaine">Thebaine</a></li> <li><a href="/wiki/Thienorphine" title="Thienorphine">Thienorphine</a></li> <li><a href="/wiki/Tianeptine" title="Tianeptine">Tianeptine</a></li> <li><a href="/wiki/Tilidine" title="Tilidine">Tilidine</a></li> <li><a href="/wiki/Tramadol" title="Tramadol">Tramadol</a></li> <li><a href="/wiki/Trimebutine" title="Trimebutine">Trimebutine</a></li> <li><a href="/wiki/TRIMU_5" title="TRIMU 5">TRIMU 5</a></li> <li><a href="/wiki/TRV734" title="TRV734">TRV734</a></li> <li><a href="/w/index.php?title=Tubotaiwine&action=edit&redlink=1" class="new" title="Tubotaiwine (page does not exist)">Tubotaiwine</a></li> <li><a href="/wiki/U-47700" title="U-47700">U-47700</a></li> <li><a href="/wiki/Valorphin" title="Valorphin">Valorphin</a></li> <li><a href="/wiki/Viminol" title="Viminol">Viminol</a></li> <li><a href="/wiki/Xorphanol" title="Xorphanol">Xorphanol</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Antagonists</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Picenadol" title="Picenadol">(3S,4S)-Picenadol</a></li> <li><a href="/wiki/Viminol" title="Viminol">2-(S)-N,N-(R)-Viminol</a></li> <li><a href="/w/index.php?title=3CS-nalmefene&action=edit&redlink=1" class="new" title="3CS-nalmefene (page does not exist)">3CS-nalmefene</a></li> <li><a href="/wiki/4-Caffeoyl-1,5-quinide" title="4-Caffeoyl-1,5-quinide">4-Caffeoyl-1,5-quinide</a></li> <li><a href="/wiki/4%E2%80%B2-Hydroxyflavanone" class="mw-redirect" title="4′-Hydroxyflavanone">4′-Hydroxyflavanone</a></li> <li><a href="/wiki/4%27,7-Dihydroxyflavone" title="4',7-Dihydroxyflavone">4',7-Dihydroxyflavone</a></li> <li><a href="/wiki/6%CE%B2-Naltrexol" title="6β-Naltrexol">6β-Naltrexol</a></li> <li><a href="/wiki/6%CE%B2-Naltrexol-d4" title="6β-Naltrexol-d4">6β-Naltrexol-d4</a></li> <li><a href="/wiki/18-Methoxycoronaridine" title="18-Methoxycoronaridine">18-MC</a></li> <li><a href="/wiki/Alpha-Gliadin" class="mw-redirect" title="Alpha-Gliadin">α-Gliadin</a></li> <li><a href="/wiki/Chlornaltrexamine" class="mw-redirect" title="Chlornaltrexamine">β-Chlornaltrexamine</a></li> <li><a href="/wiki/Beta-Funaltrexamine" class="mw-redirect" title="Beta-Funaltrexamine">β-Funaltrexamine</a></li> <li><a href="/wiki/Akuammine" title="Akuammine">Akuammine</a></li> <li><a href="/wiki/Alvimopan" title="Alvimopan">Alvimopan</a></li> <li><a href="/wiki/AM-251_(drug)" title="AM-251 (drug)">AM-251</a></li> <li><a href="/wiki/Apigenin" title="Apigenin">Apigenin</a></li> <li><a href="/wiki/AT-076" title="AT-076">AT-076</a></li> <li><a href="/wiki/Axelopran" title="Axelopran">Axelopran</a></li> <li><a href="/wiki/Bevenopran" title="Bevenopran">Bevenopran</a></li> <li><a href="/wiki/Catechin" title="Catechin">Catechin</a></li> <li><a href="/wiki/Epicatechin_gallate" title="Epicatechin gallate">Catechin gallate</a></li> <li><a href="/wiki/Clocinnamox" title="Clocinnamox">Clocinnamox</a></li> <li>CTAP</li> <li><a href="/w/index.php?title=CTOP&action=edit&redlink=1" class="new" title="CTOP (page does not exist)">CTOP</a></li> <li><a href="/w/index.php?title=Cyclofoxy&action=edit&redlink=1" class="new" title="Cyclofoxy (page does not exist)">Cyclofoxy</a></li> <li><a href="/wiki/Cyprodime" title="Cyprodime">Cyprodime</a></li> <li><a href="/wiki/Diacetylnalorphine" title="Diacetylnalorphine">Diacetylnalorphine</a></li> <li><a href="/wiki/Diprenorphine" title="Diprenorphine">Diprenorphine</a></li> <li><a href="/wiki/Epicatechin_gallate" title="Epicatechin gallate">ECG</a></li> <li><a href="/wiki/Gallocatechol" title="Gallocatechol">EGC</a></li> <li><a href="/wiki/Epicatechin" class="mw-redirect" title="Epicatechin">Epicatechin</a></li> <li><a href="/wiki/Eptazocine" title="Eptazocine">Eptazocine</a></li> <li><a href="/wiki/Gemazocine" title="Gemazocine">Gemazocine</a></li> <li><a href="/w/index.php?title=Ginsenoside_R&action=edit&redlink=1" class="new" title="Ginsenoside R (page does not exist)">Ginsenoside R</a></li> <li><a href="/wiki/Hyperoside" title="Hyperoside">Hyperoside</a></li> <li><a href="/wiki/Ibogaine" title="Ibogaine">Ibogaine</a></li> <li><a href="/wiki/JDTic" title="JDTic">JDTic</a></li> <li><a href="/wiki/Levallorphan" title="Levallorphan">Levallorphan</a></li> <li><a href="/wiki/Lobeline" title="Lobeline">Lobeline</a></li> <li><a href="/wiki/LY-255582" title="LY-255582">LY-255582</a></li> <li><a href="/wiki/LY-2196044" class="mw-redirect" title="LY-2196044">LY-2196044</a></li> <li><a href="/wiki/Methocinnamox" title="Methocinnamox">Methocinnamox</a></li> <li><a href="/wiki/Methylnaltrexone" title="Methylnaltrexone">Methylnaltrexone</a></li> <li><a href="/w/index.php?title=Methylsamidorphan_chloride&action=edit&redlink=1" class="new" title="Methylsamidorphan chloride (page does not exist)">Methylsamidorphan chloride</a></li> <li><a href="/wiki/Naldemedine" title="Naldemedine">Naldemedine</a></li> <li><a href="/wiki/Nalmefene" title="Nalmefene">Nalmefene</a></li> <li><a href="/wiki/Nalodeine" title="Nalodeine">Nalodeine (N-allylnorcodeine)</a></li> <li><a href="/wiki/Nalorphine" title="Nalorphine">Nalorphine</a></li> <li><a href="/wiki/Nalorphine_dinicotinate" title="Nalorphine dinicotinate">Nalorphine dinicotinate</a></li> <li><a href="/wiki/Naloxazone" title="Naloxazone">Naloxazone</a></li> <li><a href="/wiki/Naloxegol" title="Naloxegol">Naloxegol</a></li> <li><a href="/wiki/Naloxol" title="Naloxol">Naloxol</a></li> <li><a href="/wiki/Naloxonazine" title="Naloxonazine">Naloxonazine</a></li> <li><a href="/wiki/Naloxone" title="Naloxone">Naloxone</a></li> <li><a href="/w/index.php?title=Naltrexazone&action=edit&redlink=1" class="new" title="Naltrexazone (page does not exist)">Naltrexazone</a></li> <li><a href="/w/index.php?title=Naltrexonazine&action=edit&redlink=1" class="new" title="Naltrexonazine (page does not exist)">Naltrexonazine</a></li> <li><a href="/wiki/Naltrexone" title="Naltrexone">Naltrexone</a></li> <li><a href="/wiki/Naltrindole" title="Naltrindole">Naltrindole</a></li> <li><a href="/wiki/Naringenin" title="Naringenin">Naringenin</a></li> <li><a href="/wiki/Noribogaine" title="Noribogaine">Noribogaine</a></li> <li><a href="/wiki/Oxilorphan" title="Oxilorphan">Oxilorphan</a></li> <li><a href="/wiki/Pawhuskin_A" title="Pawhuskin A">Pawhuskin A</a></li> <li><a href="/wiki/Rimonabant" title="Rimonabant">Rimonabant</a></li> <li><a href="/wiki/Quadazocine" title="Quadazocine">Quadazocine</a></li> <li><a href="/wiki/Samidorphan" title="Samidorphan">Samidorphan</a></li> <li><a href="/wiki/Taxifolin" title="Taxifolin">Taxifolin</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;"><a href="/wiki/%CE%94-opioid_receptor" title="Δ-opioid receptor">δ-opioid</a><br />(DOR)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Agonists</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=3CS-nalmefene&action=edit&redlink=1" class="new" title="3CS-nalmefene (page does not exist)">3CS-nalmefene</a></li> <li><a href="/wiki/6%27-Guanidinonaltrindole" title="6'-Guanidinonaltrindole">6'-GNTI</a></li> <li><a href="/wiki/7-Spiroindanyloxymorphone" title="7-Spiroindanyloxymorphone">7-SIOM</a></li> <li><a href="/wiki/ADL-5747" title="ADL-5747">ADL-5747 (PF-04856881)</a></li> <li><a href="/wiki/ADL-5859" title="ADL-5859">ADL-5859</a></li> <li><a href="/wiki/Alazocine" title="Alazocine">Alazocine (SKF-10047)</a></li> <li><a href="/wiki/Amoxapine" title="Amoxapine">Amoxapine</a></li> <li><a href="/wiki/ARM390" title="ARM390">AR-M100390 (ARM390)</a></li> <li><a href="/wiki/AZD2327" class="mw-redirect" title="AZD2327">AZD2327</a></li> <li><a href="/wiki/Beta-Endorphin" class="mw-redirect" title="Beta-Endorphin">β-Endorphin</a></li> <li><a href="/w/index.php?title=Bovine_adrenal_medullary_peptide-18P&action=edit&redlink=1" class="new" title="Bovine adrenal medullary peptide-18P (page does not exist)">BAM-18P</a></li> <li><a href="/wiki/Biphalin" title="Biphalin">Biphalin</a></li> <li><a href="/wiki/BU-48" title="BU-48">BU-48</a></li> <li><a href="/wiki/Butorphan" class="mw-redirect" title="Butorphan">Butorphan</a></li> <li><a href="/wiki/Butorphanol" title="Butorphanol">Butorphanol</a></li> <li><a href="/wiki/BW373U86" title="BW373U86">BW373U86</a></li> <li><a href="/wiki/Casokefamide" title="Casokefamide">Casokefamide</a></li> <li><a href="/wiki/Cebranopadol" title="Cebranopadol">Cebranopadol</a></li> <li><a href="/wiki/Codeine" title="Codeine">Codeine</a></li> <li><a href="/wiki/Cyclazocine" title="Cyclazocine">Cyclazocine</a></li> <li><a href="/wiki/DADLE" title="DADLE">DADLE</a></li> <li><a href="/wiki/Deltorphin" title="Deltorphin">Deltorphin A</a></li> <li><a href="/wiki/Deltorphin_I" title="Deltorphin I">Deltorphin I</a></li> <li><a href="/w/index.php?title=Deltorphin_II&action=edit&redlink=1" class="new" title="Deltorphin II (page does not exist)">Deltorphin II</a></li> <li><a href="/wiki/Desmethylclozapine" title="Desmethylclozapine">Desmethylclozapine</a></li> <li><a href="/wiki/Desmetramadol" title="Desmetramadol">Desmetramadol (desmethyltramadol)</a></li> <li><a href="/wiki/Dezocine" title="Dezocine">Dezocine</a></li> <li><a href="/wiki/Heroin" title="Heroin">Diamorphine (heroin)</a></li> <li><a href="/wiki/Dihydroetorphine" title="Dihydroetorphine">Dihydroetorphine</a></li> <li><a href="/wiki/Dihydromorphine" title="Dihydromorphine">Dihydromorphine</a></li> <li><a href="/wiki/DPDPE" title="DPDPE">DPDPE</a></li> <li><a href="/wiki/DPI-221" title="DPI-221">DPI-221</a></li> <li><a href="/wiki/DPI-3290" title="DPI-3290">DPI-3290</a></li> <li><a href="/w/index.php?title=(D-Ser2,_Leu5,_Thr6)-Enkephalin&action=edit&redlink=1" class="new" title="(D-Ser2, Leu5, Thr6)-Enkephalin (page does not exist)">DSLET</a></li> <li><a href="/wiki/Ethylketazocine" title="Ethylketazocine">Ethylketazocine</a></li> <li><a href="/wiki/Etorphine" title="Etorphine">Etorphine</a></li> <li><a href="/wiki/Fentanyl" title="Fentanyl">Fentanyl</a></li> <li><a href="/w/index.php?title=Fentanyl_isothiocyanate&action=edit&redlink=1" class="new" title="Fentanyl isothiocyanate (page does not exist)">FIT</a></li> <li><a href="/wiki/Fluorophen" title="Fluorophen">Fluorophen</a></li> <li><a href="/wiki/Hemorphin-4" title="Hemorphin-4">Hemorphin-4</a></li> <li><a href="/wiki/Hydrocodone" title="Hydrocodone">Hydrocodone</a></li> <li><a href="/wiki/Hydromorphone" title="Hydromorphone">Hydromorphone</a></li> <li><a href="/wiki/Ibogaine" title="Ibogaine">Ibogaine</a></li> <li><a href="/wiki/Isomethadone" title="Isomethadone">Isomethadone</a></li> <li><a href="/wiki/JNJ-20788560" title="JNJ-20788560">JNJ-20788560</a></li> <li><a href="/wiki/KNT-127" title="KNT-127">KNT-127</a></li> <li><a href="/wiki/Mitragyna_speciosa" title="Mitragyna speciosa">Kratom</a></li> <li><a href="/wiki/Laudanosine" title="Laudanosine">Laudanosine</a></li> <li><a href="/wiki/Leu-enkephalin" title="Leu-enkephalin">Leu-enkephalin</a></li> <li><a href="/wiki/Levomethorphan" title="Levomethorphan">Levomethorphan</a></li> <li><a href="/wiki/Levorphanol" title="Levorphanol">Levorphanol</a></li> <li><a href="/w/index.php?title=Lexanopadol&action=edit&redlink=1" class="new" title="Lexanopadol (page does not exist)">Lexanopadol</a></li> <li><a href="/wiki/Lofentanil" title="Lofentanil">Lofentanil</a></li> <li><a href="/wiki/Met-enkephalin" title="Met-enkephalin">Met-enkephalin (metenkefalin)</a></li> <li><a href="/wiki/Metazocine" title="Metazocine">Metazocine</a></li> <li><a href="/wiki/Metkefamide" title="Metkefamide">Metkefamide</a></li> <li><a href="/wiki/Mitragynine" title="Mitragynine">Mitragynine</a></li> <li><a href="/wiki/Mitragynine_pseudoindoxyl" title="Mitragynine pseudoindoxyl">Mitragynine pseudoindoxyl</a></li> <li><a href="/wiki/Morphine" title="Morphine">Morphine</a></li> <li><a href="/wiki/N-Phenethyl-14-ethoxymetopon" title="N-Phenethyl-14-ethoxymetopon">N-Phenethyl-14-ethoxymetopon</a></li> <li><a href="/wiki/Norbuprenorphine" title="Norbuprenorphine">Norbuprenorphine</a></li> <li><a href="/w/index.php?title=Naloxone_benzoylhydrazone&action=edit&redlink=1" class="new" title="Naloxone benzoylhydrazone (page does not exist)">NalBzOH</a></li> <li><a href="/wiki/Oripavine" title="Oripavine">Oripavine</a></li> <li><a href="/wiki/Oxycodone" title="Oxycodone">Oxycodone</a></li> <li><a href="/wiki/Oxymorphone" title="Oxymorphone">Oxymorphone</a></li> <li><a href="/wiki/Pethidine" title="Pethidine">Pethidine (meperidine)</a></li> <li><a href="/wiki/Proglumide" title="Proglumide">Proglumide</a></li> <li><a href="/wiki/Methorphan" title="Methorphan">Racemethorphan</a></li> <li><a href="/wiki/Racemorphan" title="Racemorphan">Racemorphan</a></li> <li><a href="/wiki/RWJ-394674" title="RWJ-394674">RWJ-394674</a></li> <li><a href="/wiki/Samidorphan" title="Samidorphan">Samidorphan</a></li> <li><a href="/w/index.php?title=SB-235863&action=edit&redlink=1" class="new" title="SB-235863 (page does not exist)">SB-235863</a></li> <li><a href="/wiki/SNC-80" title="SNC-80">SNC-80</a></li> <li><a href="/w/index.php?title=SNC-162&action=edit&redlink=1" class="new" title="SNC-162 (page does not exist)">SNC-162</a></li> <li><a href="/wiki/TAN-67" title="TAN-67">TAN-67 (SB-205,607)</a></li> <li><a href="/wiki/TH-030418" title="TH-030418">TH-030418</a></li> <li><a href="/wiki/Thebaine" title="Thebaine">Thebaine</a></li> <li><a href="/wiki/C-8813" title="C-8813">Thiobromadol (C-8813)</a></li> <li><a href="/wiki/Tonazocine" title="Tonazocine">Tonazocine</a></li> <li><a href="/wiki/Tramadol" title="Tramadol">Tramadol</a></li> <li><a href="/w/index.php?title=TRV250&action=edit&redlink=1" class="new" title="TRV250 (page does not exist)">TRV250</a></li> <li><a href="/wiki/Xorphanol" title="Xorphanol">Xorphanol</a></li> <li><a href="/wiki/Zenazocine" title="Zenazocine">Zenazocine</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Antagonists</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/4%27,7-Dihydroxyflavone" title="4',7-Dihydroxyflavone">4',7-Dihydroxyflavone</a></li> <li><a href="/w/index.php?title=Naltrindole-5%27-isothiocyanate&action=edit&redlink=1" class="new" title="Naltrindole-5'-isothiocyanate (page does not exist)">5'-NTII</a></li> <li><a href="/wiki/6%CE%B2-Naltrexol" title="6β-Naltrexol">6β-Naltrexol</a></li> <li><a href="/wiki/6%CE%B2-Naltrexol-d4" title="6β-Naltrexol-d4">6β-Naltrexol-d4</a></li> <li><a href="/w/index.php?title=Alpha-Santolol&action=edit&redlink=1" class="new" title="Alpha-Santolol (page does not exist)">α-Santolol</a></li> <li><a href="/wiki/Chlornaltrexamine" class="mw-redirect" title="Chlornaltrexamine">β-Chlornaltrexamine</a></li> <li><a href="/wiki/Apigenin" title="Apigenin">Apigenin</a></li> <li><a href="/wiki/AT-076" title="AT-076">AT-076</a></li> <li><a href="/wiki/Axelopran" title="Axelopran">Axelopran</a></li> <li><a href="/wiki/Bevenopran" title="Bevenopran">Bevenopran</a></li> <li><a href="/w/index.php?title=7-Benzylidenenaltrexone&action=edit&redlink=1" class="new" title="7-Benzylidenenaltrexone (page does not exist)">BNTX</a></li> <li><a href="/wiki/Catechin" title="Catechin">Catechin</a></li> <li><a href="/wiki/Epicatechin_gallate" title="Epicatechin gallate">Catechin gallate</a></li> <li><a href="/wiki/Clocinnamox" title="Clocinnamox">Clocinnamox</a></li> <li><a href="/wiki/Diacetylnalorphine" title="Diacetylnalorphine">Diacetylnalorphine</a></li> <li><a href="/wiki/Diprenorphine" title="Diprenorphine">Diprenorphine</a></li> <li><a href="/wiki/Epicatechin_gallate" title="Epicatechin gallate">ECG</a></li> <li><a href="/wiki/Gallocatechol" title="Gallocatechol">EGC</a></li> <li><a href="/wiki/Eluxadoline" title="Eluxadoline">Eluxadoline</a></li> <li><a href="/wiki/Epicatechin" class="mw-redirect" title="Epicatechin">Epicatechin</a></li> <li><a href="/w/index.php?title=ICI-154129&action=edit&redlink=1" class="new" title="ICI-154129 (page does not exist)">ICI-154129</a></li> <li><a href="/w/index.php?title=ICI-174864&action=edit&redlink=1" class="new" title="ICI-174864 (page does not exist)">ICI-174864</a></li> <li><a href="/wiki/LY-255582" title="LY-255582">LY-255582</a></li> <li><a href="/wiki/LY-2196044" class="mw-redirect" title="LY-2196044">LY-2196044</a></li> <li><a href="/wiki/Methylnaltrexone" title="Methylnaltrexone">Methylnaltrexone</a></li> <li><a href="/w/index.php?title=Methylnaltrindole&action=edit&redlink=1" class="new" title="Methylnaltrindole (page does not exist)">Methylnaltrindole</a></li> <li><a href="/w/index.php?title=N-Benzylnaltrindole&action=edit&redlink=1" class="new" title="N-Benzylnaltrindole (page does not exist)">N-Benzylnaltrindole</a></li> <li><a href="/wiki/Nalmefene" title="Nalmefene">Nalmefene</a></li> <li><a href="/wiki/Nalorphine" title="Nalorphine">Nalorphine</a></li> <li><a href="/wiki/Naltrexone" title="Naltrexone">Naltrexone</a></li> <li><a href="/wiki/Naltriben" title="Naltriben">Naltriben</a></li> <li><a href="/wiki/Naltrindole" title="Naltrindole">Naltrindole</a></li> <li><a href="/wiki/Naloxone" title="Naloxone">Naloxone</a></li> <li><a href="/wiki/Naringenin" title="Naringenin">Naringenin</a></li> <li><a href="/wiki/Noribogaine" title="Noribogaine">Noribogaine</a></li> <li><a href="/wiki/Pawhuskin_A" title="Pawhuskin A">Pawhuskin A</a></li> <li><a href="/wiki/Quadazocine" title="Quadazocine">Quadazocine</a></li> <li><a href="/w/index.php?title=SDM25N&action=edit&redlink=1" class="new" title="SDM25N (page does not exist)">SDM25N</a></li> <li><a href="/wiki/SoRI-9409" title="SoRI-9409">SoRI-9409</a></li> <li><a href="/wiki/Taxifolin" title="Taxifolin">Taxifolin</a></li> <li><a href="/wiki/Thienorphine" title="Thienorphine">Thienorphine</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;"><a href="/wiki/%CE%9A-opioid_receptor" title="Κ-opioid receptor">κ-opioid</a><br />(KOR)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Agonists</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=3CS-nalmefene&action=edit&redlink=1" class="new" title="3CS-nalmefene (page does not exist)">3CS-nalmefene</a></li> <li><a href="/wiki/6%27-Guanidinonaltrindole" title="6'-Guanidinonaltrindole">6'-GNTI</a></li> <li><a href="/wiki/8-Carboxamidocyclazocine" title="8-Carboxamidocyclazocine">8-CAC</a></li> <li><a href="/wiki/18-Methoxycoronaridine" title="18-Methoxycoronaridine">18-MC</a></li> <li><a href="/wiki/14-Methoxymetopon" title="14-Methoxymetopon">14-Methoxymetopon</a></li> <li><a href="/wiki/Chlornaltrexamine" class="mw-redirect" title="Chlornaltrexamine">β-Chlornaltrexamine</a></li> <li><a href="/wiki/Beta-Funaltrexamine" class="mw-redirect" title="Beta-Funaltrexamine">β-Funaltrexamine</a></li> <li><a href="/wiki/Adrenorphin" title="Adrenorphin">Adrenorphin (metorphamide)</a></li> <li><a href="/wiki/Akuammicine" title="Akuammicine">Akuammicine</a></li> <li><a href="/wiki/Alazocine" title="Alazocine">Alazocine (SKF-10047)</a></li> <li><a href="/wiki/Allomatrine" class="mw-redirect" title="Allomatrine">Allomatrine</a></li> <li><a href="/w/index.php?title=Apadoline&action=edit&redlink=1" class="new" title="Apadoline (page does not exist)">Apadoline</a></li> <li><a href="/wiki/Asimadoline" title="Asimadoline">Asimadoline</a></li> <li><a href="/w/index.php?title=Bovine_adrenal_medullary_peptide-12P&action=edit&redlink=1" class="new" title="Bovine adrenal medullary peptide-12P (page does not exist)">BAM-12P</a></li> <li><a href="/w/index.php?title=Bovine_adrenal_medullary_peptide-18P&action=edit&redlink=1" class="new" title="Bovine adrenal medullary peptide-18P (page does not exist)">BAM-18P</a></li> <li><a href="/w/index.php?title=Bovine_adrenal_medullary_peptide-22P&action=edit&redlink=1" class="new" title="Bovine adrenal medullary peptide-22P (page does not exist)">BAM-22P</a></li> <li><a href="/wiki/Big_dynorphin" title="Big dynorphin">Big dynorphin</a></li> <li><a href="/wiki/Bremazocine" title="Bremazocine">Bremazocine</a></li> <li><a href="/wiki/BRL-52537" title="BRL-52537">BRL-52537</a></li> <li><a href="/wiki/Butorphan" class="mw-redirect" title="Butorphan">Butorphan</a></li> <li><a href="/wiki/Butorphanol" title="Butorphanol">Butorphanol</a></li> <li><a href="/wiki/BW373U86" title="BW373U86">BW373U86</a></li> <li><a href="/wiki/Cebranopadol" title="Cebranopadol">Cebranopadol</a></li> <li><a href="/wiki/Ciprefadol" title="Ciprefadol">Ciprefadol</a></li> <li><a href="/wiki/CR665" title="CR665">CR665</a></li> <li><a href="/wiki/Cyclazocine" title="Cyclazocine">Cyclazocine</a></li> <li><a href="/wiki/Cyclorphan" title="Cyclorphan">Cyclorphan</a></li> <li><a href="/wiki/Cyprenorphine" title="Cyprenorphine">Cyprenorphine</a></li> <li><a href="/wiki/Desmetramadol" title="Desmetramadol">Desmetramadol (desmethyltramadol)</a></li> <li><a href="/wiki/Heroin" title="Heroin">Diamorphine (heroin)</a></li> <li><a href="/wiki/Diacetylnalorphine" title="Diacetylnalorphine">Diacetylnalorphine</a></li> <li><a href="/wiki/Difelikefalin" title="Difelikefalin">Difelikefalin</a></li> <li><a href="/wiki/Dihydroetorphine" title="Dihydroetorphine">Dihydroetorphine</a></li> <li><a href="/wiki/Dihydromorphine" title="Dihydromorphine">Dihydromorphine</a></li> <li><a href="/wiki/Dinalbuphine_sebacate" title="Dinalbuphine sebacate">Dinalbuphine sebacate</a></li> <li><a href="/wiki/Diprenorphine" title="Diprenorphine">Diprenorphine</a></li> <li><a href="/wiki/Dynorphin_A" title="Dynorphin A">Dynorphin A</a></li> <li><a href="/wiki/Dynorphin_B" title="Dynorphin B">Dynorphin B (rimorphin)</a></li> <li><a href="/wiki/Eluxadoline" title="Eluxadoline">Eluxadoline</a></li> <li><a href="/wiki/Enadoline" title="Enadoline">Enadoline</a></li> <li><a href="/wiki/Eptazocine" title="Eptazocine">Eptazocine</a></li> <li><a href="/w/index.php?title=Erinacine_E&action=edit&redlink=1" class="new" title="Erinacine E (page does not exist)">Erinacine E</a></li> <li><a href="/wiki/Ethylketazocine" title="Ethylketazocine">Ethylketazocine</a></li> <li><a href="/wiki/Etorphine" title="Etorphine">Etorphine</a></li> <li><a href="/wiki/Fedotozine" title="Fedotozine">Fedotozine</a></li> <li><a href="/wiki/Fentanyl" title="Fentanyl">Fentanyl</a></li> <li><a href="/wiki/Gemazocine" title="Gemazocine">Gemazocine</a></li> <li><a href="/wiki/GR-89696" title="GR-89696">GR-89696</a></li> <li><a href="/w/index.php?title=GR-103545&action=edit&redlink=1" class="new" title="GR-103545 (page does not exist)">GR-103545</a></li> <li><a href="/wiki/Hemorphin-4" title="Hemorphin-4">Hemorphin-4</a></li> <li><a href="/wiki/Herkinorin" title="Herkinorin">Herkinorin</a></li> <li><a href="/wiki/HS665" title="HS665">HS665</a></li> <li><a href="/wiki/Hydromorphone" title="Hydromorphone">Hydromorphone</a></li> <li><a href="/wiki/HZ-2" title="HZ-2">HZ-2</a></li> <li><a href="/wiki/Ibogaine" title="Ibogaine">Ibogaine</a></li> <li><a href="/wiki/ICI-199,441" title="ICI-199,441">ICI-199,441</a></li> <li><a href="/wiki/ICI-204,448" title="ICI-204,448">ICI-204,448</a></li> <li><a href="/wiki/Ketamine" title="Ketamine">Ketamine</a></li> <li><a href="/wiki/Ketazocine" title="Ketazocine">Ketazocine</a></li> <li><a href="/wiki/Laudanosine" title="Laudanosine">Laudanosine</a></li> <li><a href="/wiki/Leumorphin" title="Leumorphin">Leumorphin (dynorphin B-29)</a></li> <li><a href="/wiki/Levallorphan" title="Levallorphan">Levallorphan</a></li> <li><a href="/wiki/Levomethorphan" title="Levomethorphan">Levomethorphan</a></li> <li><a href="/wiki/Levorphanol" title="Levorphanol">Levorphanol</a></li> <li><a href="/w/index.php?title=Lexanopadol&action=edit&redlink=1" class="new" title="Lexanopadol (page does not exist)">Lexanopadol</a></li> <li><a href="/wiki/Lofentanil" title="Lofentanil">Lofentanil</a></li> <li><a href="/wiki/LPK-26" title="LPK-26">LPK-26</a></li> <li><a href="/wiki/Lufuradom" title="Lufuradom">Lufuradom</a></li> <li><a href="/wiki/Matrine" title="Matrine">Matrine</a></li> <li><a href="/w/index.php?title=MB-1C-OH&action=edit&redlink=1" class="new" title="MB-1C-OH (page does not exist)">MB-1C-OH</a></li> <li><a href="/wiki/Menthol" title="Menthol">Menthol</a></li> <li><a href="/wiki/Metazocine" title="Metazocine">Metazocine</a></li> <li><a href="/wiki/Metkefamide" title="Metkefamide">Metkefamide</a></li> <li><a href="/wiki/Mianserin" title="Mianserin">Mianserin</a></li> <li><a href="/wiki/Mirtazapine" title="Mirtazapine">Mirtazapine</a></li> <li><a href="/wiki/Morphine" title="Morphine">Morphine</a></li> <li><a href="/wiki/Moxazocine" title="Moxazocine">Moxazocine</a></li> <li><a href="/w/index.php?title=MR-2034&action=edit&redlink=1" class="new" title="MR-2034 (page does not exist)">MR-2034</a></li> <li><a href="/w/index.php?title=N-MPPP&action=edit&redlink=1" class="new" title="N-MPPP (page does not exist)">N-MPPP</a></li> <li><a href="/wiki/Nalbuphine" title="Nalbuphine">Nalbuphine</a></li> <li><a href="/w/index.php?title=Naloxone_benzoylhydrazone&action=edit&redlink=1" class="new" title="Naloxone benzoylhydrazone (page does not exist)">NalBzOH</a></li> <li><a href="/wiki/Nalfurafine" title="Nalfurafine">Nalfurafine</a></li> <li><a href="/wiki/Nalmefene" title="Nalmefene">Nalmefene</a></li> <li><a href="/wiki/Nalodeine" title="Nalodeine">Nalodeine (N-allylnorcodeine)</a></li> <li><a href="/wiki/Nalorphine" title="Nalorphine">Nalorphine</a></li> <li><a href="/wiki/Naltriben" title="Naltriben">Naltriben</a></li> <li><a href="/wiki/Niravoline" title="Niravoline">Niravoline</a></li> <li><a href="/wiki/Norbuprenorphine" title="Norbuprenorphine">Norbuprenorphine</a></li> <li><a href="/wiki/Norbuprenorphine-3-glucuronide" title="Norbuprenorphine-3-glucuronide">Norbuprenorphine-3-glucuronide</a></li> <li><a href="/wiki/Noribogaine" title="Noribogaine">Noribogaine</a></li> <li><a href="/wiki/Norketamine" title="Norketamine">Norketamine</a></li> <li><a href="/wiki/Oripavine" title="Oripavine">Oripavine</a></li> <li><a href="/wiki/Oxilorphan" title="Oxilorphan">Oxilorphan</a></li> <li><a href="/wiki/Oxycodone" title="Oxycodone">Oxycodone</a></li> <li><a href="/wiki/Pentazocine" title="Pentazocine">Pentazocine</a></li> <li><a href="/wiki/Pethidine" title="Pethidine">Pethidine (meperidine)</a></li> <li><a href="/wiki/Phenazocine" title="Phenazocine">Phenazocine</a></li> <li><a href="/wiki/Proxorphan" title="Proxorphan">Proxorphan</a></li> <li><a href="/wiki/Methorphan" title="Methorphan">Racemethorphan</a></li> <li><a href="/wiki/Racemorphan" title="Racemorphan">Racemorphan</a></li> <li><a href="/wiki/RB-64" title="RB-64">RB-64</a></li> <li><a href="/wiki/Salvinorin_A" title="Salvinorin A">Salvinorin A</a> (<a href="/wiki/Salvia_divinorum" title="Salvia divinorum">salvia</a>)</li> <li><a href="/wiki/Salvinorin_B_ethoxymethyl_ether" class="mw-redirect" title="Salvinorin B ethoxymethyl ether">Salvinorin B ethoxymethyl ether</a></li> <li><a href="/wiki/Salvinorin_B_methoxymethyl_ether" title="Salvinorin B methoxymethyl ether">Salvinorin B methoxymethyl ether</a></li> <li><a href="/wiki/Samidorphan" title="Samidorphan">Samidorphan</a></li> <li><a href="/wiki/Spiradoline" title="Spiradoline">Spiradoline (U-62,066)</a></li> <li><a href="/wiki/TH-030418" title="TH-030418">TH-030418</a></li> <li><a href="/wiki/Thienorphine" title="Thienorphine">Thienorphine</a></li> <li><a href="/wiki/Tifluadom" title="Tifluadom">Tifluadom</a></li> <li><a href="/wiki/Tricyclic_antidepressant" title="Tricyclic antidepressant">Tricyclic antidepressants</a> (e.g., <a href="/wiki/Amitriptyline" title="Amitriptyline">amitriptyline</a>, <a href="/wiki/Desipramine" title="Desipramine">desipramine</a>, <a href="/wiki/Imipramine" title="Imipramine">imipramine</a>, <a href="/wiki/Nortriptyline" title="Nortriptyline">nortriptyline</a>)</li> <li><a href="/wiki/U-50488" title="U-50488">U-50488</a></li> <li><a href="/w/index.php?title=U-54,494A&action=edit&redlink=1" class="new" title="U-54,494A (page does not exist)">U-54,494A</a></li> <li><a href="/wiki/U-69,593" title="U-69,593">U-69,593</a></li> <li><a href="/wiki/Xorphanol" title="Xorphanol">Xorphanol</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Antagonists</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/4%E2%80%B2-Hydroxyflavanone" class="mw-redirect" title="4′-Hydroxyflavanone">4′-Hydroxyflavanone</a></li> <li><a href="/wiki/4%27,7-Dihydroxyflavone" title="4',7-Dihydroxyflavone">4',7-Dihydroxyflavone</a></li> <li><a href="/wiki/5%27-Guanidinonaltrindole" title="5'-Guanidinonaltrindole">5'-GNTI</a></li> <li><a href="/wiki/6%27-Guanidinonaltrindole" title="6'-Guanidinonaltrindole">6'-GNTI</a></li> <li><a href="/wiki/6%CE%B2-Naltrexol" title="6β-Naltrexol">6β-Naltrexol</a></li> <li><a href="/wiki/6%CE%B2-Naltrexol-d4" title="6β-Naltrexol-d4">6β-Naltrexol-d4</a></li> <li><a href="/wiki/Chlornaltrexamine" class="mw-redirect" title="Chlornaltrexamine">β-Chlornaltrexamine</a></li> <li><a href="/wiki/Buprenorphine/samidorphan" title="Buprenorphine/samidorphan">Buprenorphine/samidorphan</a></li> <li><a href="/wiki/Amentoflavone" title="Amentoflavone">Amentoflavone</a></li> <li><a href="/w/index.php?title=5%27-Acetamidinoethylnaltrindole&action=edit&redlink=1" class="new" title="5'-Acetamidinoethylnaltrindole (page does not exist)">ANTI</a></li> <li><a href="/wiki/Apigenin" title="Apigenin">Apigenin</a></li> <li><a href="/w/index.php?title=Arodyne&action=edit&redlink=1" class="new" title="Arodyne (page does not exist)">Arodyne</a></li> <li><a href="/wiki/AT-076" title="AT-076">AT-076</a></li> <li><a href="/wiki/Aticaprant" title="Aticaprant">Aticaprant</a></li> <li><a href="/wiki/Axelopran" title="Axelopran">Axelopran</a></li> <li><a href="/w/index.php?title=AZ-MTAB&action=edit&redlink=1" class="new" title="AZ-MTAB (page does not exist)">AZ-MTAB</a></li> <li><a href="/wiki/Binaltorphimine" title="Binaltorphimine">Binaltorphimine</a></li> <li><a href="/wiki/BU09059" title="BU09059">BU09059</a></li> <li><a href="/wiki/Buprenorphine" title="Buprenorphine">Buprenorphine</a></li> <li><a href="/wiki/Catechin" title="Catechin">Catechin</a></li> <li><a href="/wiki/Epicatechin_gallate" title="Epicatechin gallate">Catechin gallate</a></li> <li><a href="/wiki/CERC-501" class="mw-redirect" title="CERC-501">CERC-501 (LY-2456302)</a></li> <li><a href="/wiki/Clocinnamox" title="Clocinnamox">Clocinnamox</a></li> <li><a href="/wiki/Icalcaprant" title="Icalcaprant">CVL-354</a></li> <li><a href="/w/index.php?title=Cyclofoxy&action=edit&redlink=1" class="new" title="Cyclofoxy (page does not exist)">Cyclofoxy</a></li> <li><a href="/wiki/Dezocine" title="Dezocine">Dezocine</a></li> <li><a href="/w/index.php?title=DIPPA&action=edit&redlink=1" class="new" title="DIPPA (page does not exist)">DIPPA</a></li> <li><a href="/wiki/Gallocatechol" title="Gallocatechol">EGC</a></li> <li><a href="/wiki/Epicatechin_gallate" title="Epicatechin gallate">ECG</a></li> <li><a href="/wiki/Epicatechin" class="mw-redirect" title="Epicatechin">Epicatechin</a></li> <li><a href="/wiki/Hyperoside" title="Hyperoside">Hyperoside</a></li> <li><a href="/wiki/JDTic" title="JDTic">JDTic</a></li> <li><a href="/wiki/LY-255582" title="LY-255582">LY-255582</a></li> <li><a href="/wiki/LY-2196044" class="mw-redirect" title="LY-2196044">LY-2196044</a></li> <li><a href="/w/index.php?title=LY-2444296&action=edit&redlink=1" class="new" title="LY-2444296 (page does not exist)">LY-2444296</a></li> <li><a href="/wiki/LY-2459989" title="LY-2459989">LY-2459989</a></li> <li><a href="/w/index.php?title=LY-2795050&action=edit&redlink=1" class="new" title="LY-2795050 (page does not exist)">LY-2795050</a></li> <li><a href="/w/index.php?title=MeJDTic&action=edit&redlink=1" class="new" title="MeJDTic (page does not exist)">MeJDTic</a></li> <li><a href="/wiki/Methylnaltrexone" title="Methylnaltrexone">Methylnaltrexone</a></li> <li><a href="/w/index.php?title=ML190&action=edit&redlink=1" class="new" title="ML190 (page does not exist)">ML190</a></li> <li><a href="/w/index.php?title=ML350&action=edit&redlink=1" class="new" title="ML350 (page does not exist)">ML350</a></li> <li><a href="/w/index.php?title=MR-2266&action=edit&redlink=1" class="new" title="MR-2266 (page does not exist)">MR-2266</a></li> <li><a href="/w/index.php?title=N-Fluoropropyl-JDTic&action=edit&redlink=1" class="new" title="N-Fluoropropyl-JDTic (page does not exist)">N-Fluoropropyl-JDTic</a></li> <li><a href="/wiki/Naloxone" title="Naloxone">Naloxone</a></li> <li><a href="/wiki/Naltrexone" title="Naltrexone">Naltrexone</a></li> <li><a href="/wiki/Naltrindole" title="Naltrindole">Naltrindole</a></li> <li><a href="/wiki/Naringenin" title="Naringenin">Naringenin</a></li> <li><a href="/wiki/Navacaprant" title="Navacaprant">Navacaprant</a></li> <li><a href="/wiki/Norbinaltorphimine" title="Norbinaltorphimine">Norbinaltorphimine</a></li> <li><a href="/wiki/Noribogaine" title="Noribogaine">Noribogaine</a></li> <li><a href="/wiki/Pawhuskin_A" title="Pawhuskin A">Pawhuskin A</a></li> <li><a href="/wiki/PF-4455242" class="mw-redirect" title="PF-4455242">PF-4455242</a></li> <li><a href="/wiki/RB-64" title="RB-64">RB-64</a></li> <li><a href="/wiki/Quadazocine" title="Quadazocine">Quadazocine</a></li> <li><a href="/wiki/Taxifolin" title="Taxifolin">Taxifolin</a></li> <li><a href="/w/index.php?title=UPHIT&action=edit&redlink=1" class="new" title="UPHIT (page does not exist)">UPHIT</a></li> <li><a href="/wiki/Zyklophin" title="Zyklophin">Zyklophin</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;"><a href="/wiki/Nociceptin_receptor" title="Nociceptin receptor">Nociceptin</a><br />(NOP)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Agonists</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=(Arg14,Lys15)Nociceptin&action=edit&redlink=1" class="new" title="(Arg14,Lys15)Nociceptin (page does not exist)">(Arg14,Lys15)Nociceptin</a></li> <li><a href="/w/index.php?title=((pF)Phe4)Nociceptin(1-13)NH2&action=edit&redlink=1" class="new" title="((pF)Phe4)Nociceptin(1-13)NH2 (page does not exist)">((pF)Phe<sup>4</sup>)Nociceptin(1-13)NH<sub>2</sub></a></li> <li><a href="/w/index.php?title=(Phe1%CE%A8(CH2-NH)Gly2)Nociceptin(1-13)NH2&action=edit&redlink=1" class="new" title="(Phe1Ψ(CH2-NH)Gly2)Nociceptin(1-13)NH2 (page does not exist)">(Phe<sup>1</sup>Ψ(CH<sub>2</sub>-NH)Gly<sup>2</sup>)Nociceptin(1-13)NH<sub>2</sub></a></li> <li><a href="/w/index.php?title=Ac-RYYRWK-NH2&action=edit&redlink=1" class="new" title="Ac-RYYRWK-NH2 (page does not exist)">Ac-RYYRWK-NH<sub>2</sub></a></li> <li><a href="/w/index.php?title=Ac-RYYRIK-NH2&action=edit&redlink=1" class="new" title="Ac-RYYRIK-NH2 (page does not exist)">Ac-RYYRIK-NH<sub>2</sub></a></li> <li><a href="/w/index.php?title=BU08070&action=edit&redlink=1" class="new" title="BU08070 (page does not exist)">BU08070</a></li> <li><a href="/wiki/Buprenorphine" title="Buprenorphine">Buprenorphine</a></li> <li><a href="/wiki/Cebranopadol" title="Cebranopadol">Cebranopadol</a></li> <li><a href="/wiki/Dihydroetorphine" title="Dihydroetorphine">Dihydroetorphine</a></li> <li><a href="/wiki/Etorphine" title="Etorphine">Etorphine</a></li> <li><a href="/w/index.php?title=JNJ-19385899&action=edit&redlink=1" class="new" title="JNJ-19385899 (page does not exist)">JNJ-19385899</a></li> <li><a href="/wiki/Levomethorphan" title="Levomethorphan">Levomethorphan</a></li> <li><a href="/wiki/Levorphanol" title="Levorphanol">Levorphanol</a></li> <li><a href="/w/index.php?title=Lexanopadol&action=edit&redlink=1" class="new" title="Lexanopadol (page does not exist)">Lexanopadol</a></li> <li><a href="/wiki/MCOPPB" title="MCOPPB">MCOPPB</a></li> <li><a href="/wiki/MT-7716" title="MT-7716">MT-7716</a></li> <li><a href="/wiki/NNC_63-0532" title="NNC 63-0532">NNC 63-0532</a></li> <li><a href="/wiki/Nociceptin" title="Nociceptin">Nociceptin (orphanin FQ)</a></li> <li><a href="/w/index.php?title=Nociceptin_(1-11)&action=edit&redlink=1" class="new" title="Nociceptin (1-11) (page does not exist)">Nociceptin (1-11)</a></li> <li><a href="/w/index.php?title=Nociceptin_(1-13)NH2&action=edit&redlink=1" class="new" title="Nociceptin (1-13)NH2 (page does not exist)">Nociceptin (1-13)NH<sub>2</sub></a></li> <li><a href="/wiki/Norbuprenorphine" title="Norbuprenorphine">Norbuprenorphine</a></li> <li><a href="/wiki/Methorphan" title="Methorphan">Racemethorphan</a></li> <li><a href="/wiki/Racemorphan" title="Racemorphan">Racemorphan</a></li> <li><a href="/wiki/Ro64-6198" title="Ro64-6198">Ro64-6198</a></li> <li><a href="/wiki/Ro65-6570" title="Ro65-6570">Ro65-6570</a></li> <li><a href="/wiki/SCH-221510" title="SCH-221510">SCH-221510</a></li> <li><a href="/w/index.php?title=SCH-486757&action=edit&redlink=1" class="new" title="SCH-486757 (page does not exist)">SCH-486757</a></li> <li><a href="/w/index.php?title=SR-8993&action=edit&redlink=1" class="new" title="SR-8993 (page does not exist)">SR-8993</a></li> <li><a href="/wiki/SR-16435" title="SR-16435">SR-16435</a></li> <li><a href="/wiki/Sunobinop" title="Sunobinop">Sunobinop (S-117957)</a></li> <li><a href="/wiki/TH-030418" title="TH-030418">TH-030418</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Antagonists</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=(Nphe1)Nociceptin(1-13)NH2&action=edit&redlink=1" class="new" title="(Nphe1)Nociceptin(1-13)NH2 (page does not exist)">(Nphe<sup>1</sup>)Nociceptin(1-13)NH<sub>2</sub></a></li> <li><a href="/wiki/AT-076" title="AT-076">AT-076</a></li> <li><a href="/w/index.php?title=BAN-ORL-24&action=edit&redlink=1" class="new" title="BAN-ORL-24 (page does not exist)">BAN-ORL-24</a></li> <li><a href="/wiki/BTRX-246040" title="BTRX-246040">BTRX-246040 (LY-2940094)</a></li> <li><a href="/wiki/J-113,397" title="J-113,397">J-113,397</a></li> <li><a href="/wiki/JTC-801" title="JTC-801">JTC-801</a></li> <li><a href="/w/index.php?title=Naloxone_benzoylhydrazone&action=edit&redlink=1" class="new" title="Naloxone benzoylhydrazone (page does not exist)">NalBzOH</a></li> <li><a href="/w/index.php?title=Nociceptin_(1-7)&action=edit&redlink=1" class="new" title="Nociceptin (1-7) (page does not exist)">Nociceptin (1-7)</a></li> <li><a href="/w/index.php?title=Nocistatin&action=edit&redlink=1" class="new" title="Nocistatin (page does not exist)">Nocistatin</a></li> <li><a href="/wiki/SB-612,111" title="SB-612,111">SB-612,111</a></li> <li><a href="/w/index.php?title=SR-16430&action=edit&redlink=1" class="new" title="SR-16430 (page does not exist)">SR-16430</a></li> <li><a href="/wiki/Thienorphine" title="Thienorphine">Thienorphine</a></li> <li><a href="/w/index.php?title=Trap-101&action=edit&redlink=1" class="new" title="Trap-101 (page does not exist)">Trap-101</a></li> <li><a href="/w/index.php?title=UFP-101&action=edit&redlink=1" class="new" title="UFP-101 (page does not exist)">UFP-101</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Others</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Enkephalinase_inhibitor" title="Enkephalinase inhibitor">Enkephalinase inhibitors</a>:</i> <a href="/wiki/Amastatin" title="Amastatin">Amastatin</a></li> <li><a href="/w/index.php?title=BL-2401&action=edit&redlink=1" class="new" title="BL-2401 (page does not exist)">BL-2401</a></li> <li><a href="/wiki/Candoxatril" title="Candoxatril">Candoxatril</a></li> <li><a href="/wiki/Phenylalanine#D-,_L-_and_DL-phenylalanine" title="Phenylalanine"><span style="font-size:85%;">D </span>-Phenylalanine</a></li> <li><a href="/w/index.php?title=Dexecadotril&action=edit&redlink=1" class="new" title="Dexecadotril (page does not exist)">Dexecadotril (retorphan)</a></li> <li><a href="/wiki/Ecadotril" title="Ecadotril">Ecadotril (sinorphan)</a></li> <li><a href="/wiki/Kelatorphan" title="Kelatorphan">Kelatorphan</a></li> <li><a href="/wiki/Racecadotril" title="Racecadotril">Racecadotril (acetorphan)</a></li> <li><a href="/wiki/RB-101" title="RB-101">RB-101</a></li> <li><a href="/wiki/RB-120" title="RB-120">RB-120</a></li> <li><a href="/wiki/RB-3007" title="RB-3007">RB-3007</a></li> <li><a href="/w/index.php?title=Opiorphan&action=edit&redlink=1" class="new" title="Opiorphan (page does not exist)">Opiorphan</a></li> <li><a href="/wiki/Selank" title="Selank">Selank</a></li> <li><a href="/wiki/Semax" title="Semax">Semax</a></li> <li><a href="/wiki/Spinorphin" title="Spinorphin">Spinorphin</a></li> <li><a href="/wiki/Thiorphan" title="Thiorphan">Thiorphan</a></li> <li><a href="/wiki/Tynorphin" title="Tynorphin">Tynorphin</a></li> <li><a href="/wiki/Ubenimex" title="Ubenimex">Ubenimex (bestatin)</a></li></ul> <ul><li><i>Propeptides:</i> <a href="/wiki/Lipotropin" title="Lipotropin">β-Lipotropin (proendorphin)</a></li> <li><a href="/wiki/Prodynorphin" title="Prodynorphin">Prodynorphin</a></li> <li><a href="/wiki/Proenkephalin" title="Proenkephalin">Proenkephalin</a></li> <li><a href="/w/index.php?title=Pronociceptin&action=edit&redlink=1" class="new" title="Pronociceptin (page does not exist)">Pronociceptin</a></li> <li><a href="/wiki/Proopiomelanocortin" title="Proopiomelanocortin">Proopiomelanocortin (POMC)</a></li></ul> <ul><li><i>Others:</i> <a href="/wiki/Kyotorphin" title="Kyotorphin">Kyotorphin</a> (met-enkephalin releaser/degradation stabilizer)</li></ul> </div></td></tr></tbody></table></div> <!-- NewPP limit report Parsed by mw‐web.codfw.main‐5cd4cd96d5‐hcssx Cached time: 20241127080258 Cache expiry: 2592000 Reduced expiry: false Complications: [vary‐revision‐sha1, show‐toc] CPU time usage: 0.882 seconds Real time usage: 1.230 seconds Preprocessor visited node count: 8496/1000000 Post‐expand include size: 282803/2097152 bytes Template argument size: 55043/2097152 bytes Highest expansion depth: 25/100 Expensive parser function count: 5/500 Unstrip recursion depth: 1/20 Unstrip post‐expand size: 132030/5000000 bytes Lua time usage: 0.437/10.000 seconds Lua memory usage: 9378997/52428800 bytes Number of Wikibase entities loaded: 1/400 --> <!-- Transclusion expansion time report (%,ms,calls,template) 100.00% 1039.459 1 -total 39.46% 410.166 1 Template:Chembox 27.10% 281.737 1 Template:Reflist 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