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(PDF) Environmental and occupational exposure to benzene in Thailand
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{"work":{"id":45319419,"created_at":"2021-03-02T19:41:01.187-08:00","from_world_paper_id":166886465,"updated_at":"2024-11-13T18:06:42.937-08:00","_data":{"publisher":"Elsevier BV","grobid_abstract":"Exposure to benzene in air is a concern in Thailand, particularly since it was observed that the incidence of blood-related cancers, such as leukemia and lymphoma, has increased in the past few decades. In Bangkok, the mean atmospheric levels of benzene on main roads and in schools were 33.71 and 8.25 ppb, respectively, while in gasoline service stations and petrochemical factories the mean ambient levels were 64.78 and 66.24 ppb, respectively. Cloth vendors (22.61 ppb) and grilled-meat vendors (28.19 ppb) working on the roadsides were exposed to significantly higher levels of benzene than the control group (12.95 ppb; p \u003c 0.05). Bangkok school children (5.50 ppb) were exposed to significantly higher levels of benzene than provincial school children (2.54 ppb; p \u003c 0.01). Factory workers (73.55 ppb) and gasoline service attendants (121.67 ppb) were exposed to significantly higher levels of benzene than control workers (4.77 ppb; p \u003c 0.001). In accordance with the increased benzene exposures, levels of urinary trans,trans-muconic acid (MA) were significantly increased in all benzene-exposed groups. In school children, the levels of MA were relatively high, taking into account the much lower level of exposure. Blood benzene levels were also significantly increased in Bangkok school children (77.97 ppt; p \u003c 0.01), gasoline service attendants (641.84 ppt; p \u003c 0.05) and factory workers (572.61 ppt; p \u003c 0.001), when compared with the respective controls. DNA damage, determined as DNA strand breaks, was found to be elevated in gasoline service attendants, petrochemical factory workers, and Bangkok school children (p \u003c 0.001). The cytogenetic challenge assay, which measures DNA repair capacity, showed varying levels of significant increases in the numbers of dicentrics and deletions in gasoline service attendants, petrochemical factory workers and Bangkok school children, indicating a decrease in DNA repair capacity in these subjects.","publication_date":"2005,,","publication_name":"Chemico-Biological Interactions","grobid_abstract_attachment_id":"65865053"},"document_type":"paper","pre_hit_view_count_baseline":null,"quality":"high","language":"en","title":"Environmental and occupational exposure to benzene in Thailand","broadcastable":true,"draft":null,"has_indexable_attachment":true,"indexable":true}}["work"]; window.loswp.workCoauthors = [49208178]; window.loswp.locale = "en"; window.loswp.countryCode = "SG"; window.loswp.cwvAbTestBucket = ""; window.loswp.designVariant = "ds_vanilla"; window.loswp.fullPageMobileSutdModalVariant = "control"; window.loswp.useOptimizedScribd4genScript = false; window.loginModal = {}; window.loginModal.appleClientId = 'edu.academia.applesignon'; window.userInChina = "false";</script><script defer="" src="https://accounts.google.com/gsi/client"></script><div class="ds-loswp-container"><div class="ds-work-card--grid-container"><div class="ds-work-card--container js-loswp-work-card"><div class="ds-work-card--cover"><div class="ds-work-cover--wrapper"><div class="ds-work-cover--container"><button class="ds-work-cover--clickable js-swp-download-button" data-signup-modal="{"location":"swp-splash-paper-cover","attachmentId":65865053,"attachmentType":"pdf"}"><img alt="First page of “Environmental and occupational exposure to benzene in Thailand”" class="ds-work-cover--cover-thumbnail" src="https://0.academia-photos.com/attachment_thumbnails/65865053/mini_magick20210302-4197-1j1yvk3.png?1614743515" /><img alt="PDF Icon" class="ds-work-cover--file-icon" src="//a.academia-assets.com/images/single_work_splash/adobe_icon.svg" /><div class="ds-work-cover--hover-container"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span><p>Download Free PDF</p></div><div class="ds-work-cover--ribbon-container">Download Free PDF</div><div class="ds-work-cover--ribbon-triangle"></div></button></div></div></div><div class="ds-work-card--work-information"><h1 class="ds-work-card--work-title">Environmental and occupational exposure to benzene in Thailand</h1><div class="ds-work-card--work-authors ds-work-card--detail"><a class="ds-work-card--author js-wsj-grid-card-author ds2-5-body-md ds2-5-body-link" data-author-id="49208178" href="https://independent.academia.edu/SiriratChanvaivit"><img alt="Profile image of Sirirat Chanvaivit" class="ds-work-card--author-avatar" src="https://0.academia-photos.com/49208178/12944000/14315053/s65_sirirat.chanvaivit.jpg" />Sirirat Chanvaivit</a></div><div class="ds-work-card--detail"><p class="ds-work-card--detail ds2-5-body-sm">2005, Chemico-Biological Interactions</p><div class="ds-work-card--work-metadata"><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">visibility</span><p class="ds2-5-body-sm" id="work-metadata-view-count">…</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">description</span><p class="ds2-5-body-sm">9 pages</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">link</span><p class="ds2-5-body-sm">1 file</p></div></div><script>(async () => { const workId = 45319419; 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if (!viewCountBody) { throw new Error('Failed to find work views element'); } viewCountBody.textContent = `${commaizedViewCount} views`; } catch (error) { // Remove the whole views element if there was some issue parsing. document.getElementById('work-metadata-view-count')?.parentNode?.remove(); throw new Error(`Failed to parse view count: ${viewCount}`, error); } }; // If the DOM is still loading, wait for it to be ready before updating the view count. if (document.readyState === "loading") { document.addEventListener('DOMContentLoaded', () => { updateViewCount(viewCount); }); // Otherwise, just update it immediately. } else { updateViewCount(viewCount); } })();</script></div><p class="ds-work-card--work-abstract ds-work-card--detail ds2-5-body-md">Exposure to benzene in air is a concern in Thailand, particularly since it was observed that the incidence of blood-related cancers, such as leukemia and lymphoma, has increased in the past few decades. In Bangkok, the mean atmospheric levels of benzene on main roads and in schools were 33.71 and 8.25 ppb, respectively, while in gasoline service stations and petrochemical factories the mean ambient levels were 64.78 and 66.24 ppb, respectively. Cloth vendors (22.61 ppb) and grilled-meat vendors (28.19 ppb) working on the roadsides were exposed to significantly higher levels of benzene than the control group (12.95 ppb; p < 0.05). Bangkok school children (5.50 ppb) were exposed to significantly higher levels of benzene than provincial school children (2.54 ppb; p < 0.01). Factory workers (73.55 ppb) and gasoline service attendants (121.67 ppb) were exposed to significantly higher levels of benzene than control workers (4.77 ppb; p < 0.001). In accordance with the increased benzene exposures, levels of urinary trans,trans-muconic acid (MA) were significantly increased in all benzene-exposed groups. In school children, the levels of MA were relatively high, taking into account the much lower level of exposure. Blood benzene levels were also significantly increased in Bangkok school children (77.97 ppt; p < 0.01), gasoline service attendants (641.84 ppt; p < 0.05) and factory workers (572.61 ppt; p < 0.001), when compared with the respective controls. DNA damage, determined as DNA strand breaks, was found to be elevated in gasoline service attendants, petrochemical factory workers, and Bangkok school children (p < 0.001). The cytogenetic challenge assay, which measures DNA repair capacity, showed varying levels of significant increases in the numbers of dicentrics and deletions in gasoline service attendants, petrochemical factory workers and Bangkok school children, indicating a decrease in DNA repair capacity in these subjects.</p><div class="ds-work-card--button-container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--work-card","attachmentId":65865053,"attachmentType":"pdf","workUrl":"https://www.academia.edu/45319419/Environmental_and_occupational_exposure_to_benzene_in_Thailand"}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--work-card","attachmentId":65865053,"attachmentType":"pdf","workUrl":"https://www.academia.edu/45319419/Environmental_and_occupational_exposure_to_benzene_in_Thailand"}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div><div class="ds-signup-banner-trigger-container"><div class="ds-signup-banner-trigger ds-signup-banner-trigger-control"></div></div><div class="ds-signup-banner ds-signup-banner-control"><div id="ds-signup-banner-close-button"><button class="ds2-5-button ds2-5-button--secondary ds2-5-button--inverse"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">close</span></button></div><div class="ds-signup-banner-ctas"><img src="//a.academia-assets.com/images/academia-logo-capital-white.svg" /><h4 class="ds2-5-heading-serif-sm">Sign up for access to the world's latest research</h4><button class="ds2-5-button ds2-5-button--inverse ds2-5-button--full-width js-swp-download-button" data-signup-modal="{"location":"signup-banner"}">Sign up for free<span class="material-symbols-outlined" style="font-size: 20px" translate="no">arrow_forward</span></button></div><div class="ds-signup-banner-divider"></div><div class="ds-signup-banner-reasons"><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Get notified about relevant papers</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Save papers to use in your research</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Join the discussion with peers</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Track your impact</span></div></div></div><script>(() => { // Set up signup banner show/hide behavior: // 1. 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Children living in urban areas are exposed to benzene and other toxic pollutants simultaneously on a regular basis. Assessment of benzene exposure and oxidative DNA damage in schoolchildren in Bangkok compared with the rural schoolchildren was studied through the use of biomarkers. Benzene levels in ambient air at the roadside adjacent to Bangkok schools was 3.95-fold greater than that of rural school areas. Personal exposure to benzene in Bangkok schoolchildren was 3.04-fold higher than that in the rural schoolchildren. Blood benzene, urinary benzene and urinary muconic acid (MA) levels were significantly higher in the Bangkok schoolchildren. A significantly higher level of 8-hydroxy-2-deoxyguanosine (8-OHdG) in leukocytes and in urine was found in Bangkok children than in the rural children. There was a significant correlation between individual benzene exposure level and blood benzene (r s = 0.193, P < 0.05), urinary benzene (r s = 0.298, P < 0.05), urinary MA (r s = 0.348, P < 0.01), and 8-OHdG in leukocyte (r s = 0.130, P < 0.05). In addition, a significant correlation between urinary MA and 8-OHdG in leukocytes (r s = 0.241, P < 0.05) was also found. Polymorphisms of various xenobiotic metabolizing genes responsible for susceptibility to benzene toxicity have been studied; however only the GSTM1 genotypes had a significant effect on urinary MA excretion. Our data indicates that children living in the areas of high traffic density are exposed to a higher level of benzene than those living in rural areas. Exposure to higher level of benzene in urban children may contribute to oxidative DNA damage, suggesting an increased health risk from traffic benzene emission.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Oxidative DNA damage and influence of genetic polymorphisms among urban and rural schoolchildren exposed to benzene","attachmentId":73619097,"attachmentType":"pdf","work_url":"https://www.academia.edu/59958294/Oxidative_DNA_damage_and_influence_of_genetic_polymorphisms_among_urban_and_rural_schoolchildren_exposed_to_benzene","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/59958294/Oxidative_DNA_damage_and_influence_of_genetic_polymorphisms_among_urban_and_rural_schoolchildren_exposed_to_benzene"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="2" data-entity-id="12478255" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/12478255/Low_air_levels_of_benzene_Correlation_between_biomarkers_of_exposure_and_genotoxic_effects">Low air levels of benzene: Correlation between biomarkers of exposure and genotoxic effects</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="31324191" href="https://independent.academia.edu/PieroLovreglio">Piero Lovreglio</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Toxicology Letters, 2010</p><p class="ds-related-work--abstract ds2-5-body-sm">This study was aimed to identify useful biomarkers of exposure and effect in workers exposed to low levels of benzene, and to evaluate any correlations existing between these parameters.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Low air levels of benzene: Correlation between biomarkers of exposure and genotoxic effects","attachmentId":46153583,"attachmentType":"pdf","work_url":"https://www.academia.edu/12478255/Low_air_levels_of_benzene_Correlation_between_biomarkers_of_exposure_and_genotoxic_effects","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/12478255/Low_air_levels_of_benzene_Correlation_between_biomarkers_of_exposure_and_genotoxic_effects"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="3" data-entity-id="76151334" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/76151334/Genotoxic_Effects_of_Benzene_in_Petrol_Station_Workers_in_Duhok_Kurdistan_Region_of_Iraq">Genotoxic Effects of Benzene in Petrol Station Workers in Duhok- Kurdistan Region of Iraq</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="36918804" href="https://independent.academia.edu/MarwanKhalilQader">Marwan Khalil Qader</a></div><p class="ds-related-work--metadata ds2-5-body-xs">2019</p><p class="ds-related-work--abstract ds2-5-body-sm">Background: Occupational exposures represent complex mixture of genotoxic agents. Benzene is one of the major organic product, people with chronic exposure to this organic product are exposed to many malignant disorders. People who work in Petrol station are consistently exposed to the dangerous components of petroleum through inhalation or direct contact with their skin. Objective: The aim of this study was to evaluate the potential cytogenetic damage and micronuclei frequency associated with occupational exposure to benzene among petrol station workers by using Micronucleus assay. Materials and Methods: The study groups included twenty five occupationally exposed petrol station workers and twenty five age matched controls were recruited and evaluated for genetic damage. Exfoliated Buccal cells were collected from both groups by using the sterile brush. Slides fixed in ethanol and stained with Giemsa stain and 1000 cells were studied by using a light microscope. Statistical analysi...</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Genotoxic Effects of Benzene in Petrol Station Workers in Duhok- Kurdistan Region of Iraq","attachmentId":83927336,"attachmentType":"pdf","work_url":"https://www.academia.edu/76151334/Genotoxic_Effects_of_Benzene_in_Petrol_Station_Workers_in_Duhok_Kurdistan_Region_of_Iraq","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/76151334/Genotoxic_Effects_of_Benzene_in_Petrol_Station_Workers_in_Duhok_Kurdistan_Region_of_Iraq"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="4" data-entity-id="10029658" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/10029658/Urban_benzene_exposure_and_oxidative_DNA_damage_influence_of_genetic_polymorphisms_in_metabolism_genes">Urban benzene exposure and oxidative DNA damage: influence of genetic polymorphisms in metabolism genes</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="24424933" href="https://independent.academia.edu/OleHertel">Ole Hertel</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Science of The Total Environment, 2003</p><p class="ds-related-work--abstract ds2-5-body-sm">Benzene has been implicated as an environmental risk factor in leukaemia and other haematological diseases. Relationships between urban benzene exposure, oxidative DNA damage and polymorphisms in metabolism enzymes were examined in 40 volunteers living and working in Copenhagen. Personal exposures to benzene, toluene and methyl tert-butyl ether (MTBE) were monitored during a 5-day period. DNA damage was measured by 7-hydro-8oxo-29-deoxyguanosine (8-oxodG) in lymphocyte DNA and urine and by comet assay with use of fapyguanine glycosylase (FPG) and endonuclease III (ENDO). Excretion of the benzene metabolites trans,trans-muconic acid (ttMA) and S-phenylmercapturic acid (S-PMA) were measured in urine. Polymorphisms in glutathione-S-transferases T1 (GSTT1), M1 (GSTM1) and P1 (GSTP1) and NAD(P)H:quinone oxidoreductase (NQO) were determined. Median exposures to benzene, toluene and MTBE were 2.5, 18.7 and 0.86 mgym . No significant correlations between 3 external benzene exposure and any of the biomarkers were found. However, a significant correlation between S-PMA excretion and 8-oxodG in lymphocytes was found (R s0.39). Men were found to excrete significantly more ttMA s than the women did and ttMA excretion in men was found to be significantly associated with external benzene exposure (Rs0.53, Ps0.025). In addition, ttMA and S-PMA excretion was significantly higher in subjects with the NQOqyygenotype compared with subjects with the wild type (Ps0.004 and Ps0.011, respectively). Even though there are some limitations in this study due to the low range of benzene exposure and biomarker concentrations as well as a small number of subjects, these results could suggest that even at ambient concentrations exposure to benzene could have genotoxic effects in susceptible individuals. ᮊ</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Urban benzene exposure and oxidative DNA damage: influence of genetic polymorphisms in metabolism genes","attachmentId":47561222,"attachmentType":"pdf","work_url":"https://www.academia.edu/10029658/Urban_benzene_exposure_and_oxidative_DNA_damage_influence_of_genetic_polymorphisms_in_metabolism_genes","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/10029658/Urban_benzene_exposure_and_oxidative_DNA_damage_influence_of_genetic_polymorphisms_in_metabolism_genes"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="5" data-entity-id="17834212" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/17834212/DNA_damage_in_lymphocytes_of_benzene_exposed_workers_correlates_with_trans_trans_muconic_acids_and_breath_benzene_levels">DNA damage in lymphocytes of benzene exposed workers correlates with trans,trans-muconic acids and breath benzene levels</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="37861759" href="https://independent.academia.edu/SKang4">S. Kang</a><span>, </span><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="39303370" href="https://independent.academia.edu/HyungsikKang">Hyung-sik Kang</a><span>, </span><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="37753021" href="https://independent.academia.edu/DonggeunSul">Donggeun Sul</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Mutation Research/Genetic Toxicology and Environmental Mutagenesis, 2005</p><p class="ds-related-work--abstract ds2-5-body-sm">Benzene causes many kinds of blood disorders in workers employed in many different environments. These diseases include myelodisplastic syndrome and acute and chronic myelocytic leukemia. In the present study, five occupational work places, including six industrial process types, namely, printing, shoe-making, methylene di-aniline (MDA), nitrobenzene, carbomer, and benzene production were selected, and the levels of breath benzene, and trans,trans-muconic acids (t,t-MA) and phenol in urine were evaluated, as well as hematological changes and lymphocyte DNA damage. The concentration of benzene in breath was less than 3 ppm in the workplaces, and benzene exposure was found to be higher in work places where benzene is used, than in those where benzene is produced. At low levels of benzene exposure, urinary t,t-MA correlated strongly with benzene in air. Highest Olive tail moments were found in workers producing carbomer. Levels of breathzone benzene were found to be strongly correlated with Olive tail moment values in the lymphocytes of workers, but not with hematological data in the six workplaces types. In conclusion, the highest benzene exposures found occurred in workers at a company, which utilized benzene in the production of carbomer. In terms of low levels of exposure to benzene, urinary t,t-MA and DNA damage exhibited a strong correlation with breath benzene, but not with hematological data. We conclude that breath benzene, t,t-MA and lymphocytic DNA damage are satisfactory biomonitoring markers with respect to benzene exposure in the workplace.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"DNA damage in lymphocytes of benzene exposed workers correlates with trans,trans-muconic acids and breath benzene levels","attachmentId":42224096,"attachmentType":"pdf","work_url":"https://www.academia.edu/17834212/DNA_damage_in_lymphocytes_of_benzene_exposed_workers_correlates_with_trans_trans_muconic_acids_and_breath_benzene_levels","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/17834212/DNA_damage_in_lymphocytes_of_benzene_exposed_workers_correlates_with_trans_trans_muconic_acids_and_breath_benzene_levels"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="6" data-entity-id="1545014" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/1545014/11_Chromosomal_Damage_Risk_Assessment_to_Benzene_Exposure">11.Chromosomal Damage Risk Assessment to Benzene Exposure</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="1020414" href="https://independent.academia.edu/AlexanderDecker">Alexander Decker</a></div><p class="ds-related-work--abstract ds2-5-body-sm">This study was a cross-sectional survey study to assess relative risk (RR) of chromosomal damage through benzene exposure in 45 gasoline stations workers compared to 30 controls in central area of Bangkok. Sister chromatid exchange (SCE) is as genotoxic biomarker, performed in white blood cells, and blood benzene level (BBL) is a biological marker of benzene exposure was performed by gas chromatographyflame ionization detector (GC-FID) using modified headspace solid-phase micro-extraction (HS-SPME) technique. The results showed that the average blood benzene level of these workers was significantly higher than in the controls (p < 0.001) as well as the frequency of sister chromatid exchange. The sister chromatid exchange was strongly and positively associated with blood benzene level of gasoline workers (p < 0.001) with the chromosomal damage relative risk at 2.50 (p < 0.001).</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"11.Chromosomal Damage Risk Assessment to Benzene Exposure","attachmentId":13096431,"attachmentType":"pdf","work_url":"https://www.academia.edu/1545014/11_Chromosomal_Damage_Risk_Assessment_to_Benzene_Exposure","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/1545014/11_Chromosomal_Damage_Risk_Assessment_to_Benzene_Exposure"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="7" data-entity-id="81194117" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/81194117/Lymphocyte_chromosome_breakage_in_low_benzene_exposure_among_Indonesian_workers">Lymphocyte chromosome breakage in low benzene exposure among Indonesian workers</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="31928115" href="https://independent.academia.edu/DewiSoemarko">Dewi Soemarko</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Medical Journal of Indonesia, 2015</p><p class="ds-related-work--abstract ds2-5-body-sm">Background: Benzene has been used in industry since long time and its level in environment should be controled. Although environmental benzene level has been controlled to less than 1 ppm, negative effect of benzene exposure is still observed, such as chromosome breakage. This study aimed to know the prevalence of lymphocyte chromosome breakage and the influencing factors among workers in low level benzene exposure.Methods: This was a cross sectional study in oil & gas industry T, conducted between September 2007 and April 2010. The study subjects consisted of 115 workers from production section and head office. Data on type of work, duration of benzene exposure, and antioxidant consumption were collected by interview as well as observation of working process. Lymphocyte chromosome breakage was examined by banding method. Analysis of relationship between chromosome breakage and risk factors was performed by chi-square and odd ratio, whereas the role of determinant risk factors was a...</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Lymphocyte chromosome breakage in low benzene exposure among Indonesian workers","attachmentId":87324394,"attachmentType":"pdf","work_url":"https://www.academia.edu/81194117/Lymphocyte_chromosome_breakage_in_low_benzene_exposure_among_Indonesian_workers","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/81194117/Lymphocyte_chromosome_breakage_in_low_benzene_exposure_among_Indonesian_workers"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="8" data-entity-id="1291970" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/1291970/Chromosomal_Damage_Risk_Assessment_to_Benzene_Exposure">Chromosomal Damage Risk Assessment to Benzene Exposure</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="1020414" href="https://independent.academia.edu/AlexanderDecker">Alexander Decker</a></div><p class="ds-related-work--abstract ds2-5-body-sm">This study was a cross-sectional survey study to assess relative risk (RR) of chromosomal damage through benzene exposure in 45 gasoline stations workers compared to 30 controls in central area of Bangkok. Sister chromatid exchange (SCE) is as genotoxic biomarker, performed in white blood cells, and blood benzene level (BBL) is a biological marker of benzene exposure was performed by gas chromatographyflame ionization detector (GC-FID) using modified headspace solid-phase micro-extraction (HS-SPME) technique. The results showed that the average blood benzene level of these workers was significantly higher than in the controls (p < 0.001) as well as the frequency of sister chromatid exchange. The sister chromatid exchange was strongly and positively associated with blood benzene level of gasoline workers (p < 0.001) with the chromosomal damage relative risk at 2.50 (p < 0.001).</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Chromosomal Damage Risk Assessment to Benzene Exposure","attachmentId":7940413,"attachmentType":"pdf","work_url":"https://www.academia.edu/1291970/Chromosomal_Damage_Risk_Assessment_to_Benzene_Exposure","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/1291970/Chromosomal_Damage_Risk_Assessment_to_Benzene_Exposure"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="9" data-entity-id="18474095" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/18474095/An_Epidemiologic_Study_of_Early_Biologic_Effects_of_Benzene_in_Chinese_Workers">An Epidemiologic Study of Early Biologic Effects of Benzene in Chinese Workers</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="38486006" href="https://independent.academia.edu/JosephWiemels">Joseph Wiemels</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Environmental Health Perspectives, 1996</p><p class="ds-related-work--abstract ds2-5-body-sm">Benzene is a recognized hematotoxin and leukemogen, but its mechanisms of action in humans are still uncertain. To provide insight into these processes, we carried out a cross-sectional study of 44 healthy workers currently exposed to benzene (median 8-hr time-weighted average; 31 ppm), and unexposed controls in Shanghai, China. Here we provide an overview of the study results on peripheral blood cell levels and somatic cell mutation frequency measured by the glycophorin A (GPA) gene loss assay and report on peripheral cytokine levels. All peripheral blood cell levels (i.e., total white blood cells, absolute lymphocyte count, platelets, red blood cells, and hemoglobin) were decreased among exposed workers compared to controls, with the exception of the red blood cell mean corpuscular volume, which was higher among exposed subjects. In contrast, peripheral cytokine levels (interleukin-3, interleukin-6, erythropoietin, granulocyte colonystimulating factor, tissue necrosis factor-a) in a subset of the most highly exposed workers (n = 11) were similar to values in controls (n = 11), suggesting that benzene does not affect these growth factor levels in peripheral blood. The GPA assay measures stem cell or precursor erythroid cell mutations expressed in peripheral red blood cells of MN heterozygous subjects, identifying NN variants, which result from loss of the GPA M allele and duplication of the N allele, and No variants, which arise from gene inactivation. The NN (but not NO) GPA variant cell frequency was elevated in the exposed workers compared with controls (mean ± SD, 13.9 ± 8.4 mutants per million cells versus 7.4 ± 5.2 per million cells, respectively; p=0.0002), suggesting that benzene produces gene-duplicating but not gene-inactivating mutations at the GPA locus in bone marrow cells of exposed humans. These findings, combined with ongoing analyses of benzene macromolecular adducts and chromosomal aberrations, will provide an opportunity to comprehensively evaluate a wide range of early biologic effects associated with benzene exposure in humans.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"An Epidemiologic Study of Early Biologic Effects of Benzene in Chinese Workers","attachmentId":40082461,"attachmentType":"pdf","work_url":"https://www.academia.edu/18474095/An_Epidemiologic_Study_of_Early_Biologic_Effects_of_Benzene_in_Chinese_Workers","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/18474095/An_Epidemiologic_Study_of_Early_Biologic_Effects_of_Benzene_in_Chinese_Workers"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div></div></div><div class="ds-sticky-ctas--wrapper js-loswp-sticky-ctas hidden"><div class="ds-sticky-ctas--grid-container"><div class="ds-sticky-ctas--container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--sticky-ctas","attachmentId":65865053,"attachmentType":"pdf","workUrl":null}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--sticky-ctas","attachmentId":65865053,"attachmentType":"pdf","workUrl":null}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div></div></div><div class="ds-below-fold--grid-container"><div class="ds-work--container js-loswp-embedded-document"><div class="attachment_preview" data-attachment="Attachment_65865053" style="display: none"><div class="js-scribd-document-container"><div class="scribd--document-loading js-scribd-document-loader" style="display: block;"><img alt="Loading..." src="//a.academia-assets.com/images/loaders/paper-load.gif" /><p>Loading Preview</p></div></div><div style="text-align: center;"><div class="scribd--no-preview-alert js-preview-unavailable"><p>Sorry, preview is currently unavailable. You can download the paper by clicking the button above.</p></div></div></div></div><div class="ds-sidebar--container js-work-sidebar"><div class="ds-related-content--container"><h2 class="ds-related-content--heading">Related papers</h2><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="0" data-entity-id="53417382" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/53417382/Measurement_of_DNA_repair_deficiency_in_workers_exposed_to_benzene">Measurement of DNA repair deficiency in workers exposed to benzene</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="52139982" href="https://independent.academia.edu/LanceHallberg">Lance Hallberg</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Environmental Health Perspectives, 1996</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Measurement of DNA repair deficiency in workers exposed to benzene","attachmentId":70271680,"attachmentType":"pdf","work_url":"https://www.academia.edu/53417382/Measurement_of_DNA_repair_deficiency_in_workers_exposed_to_benzene","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-related-work-grid-card-view-pdf" href="https://www.academia.edu/53417382/Measurement_of_DNA_repair_deficiency_in_workers_exposed_to_benzene"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="1" data-entity-id="20009742" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/20009742/Biomarkers_of_exposure_and_effect_in_Bulgarian_petrochemical_workers_exposed_to_benzene">Biomarkers of exposure and effect in Bulgarian petrochemical workers exposed to benzene</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="40914891" href="https://independent.academia.edu/TzvetaGeorgieva">Tzveta Georgieva</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Chemico-Biological Interactions, 2005</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Biomarkers of exposure and effect in Bulgarian petrochemical workers exposed to benzene","attachmentId":40955280,"attachmentType":"pdf","work_url":"https://www.academia.edu/20009742/Biomarkers_of_exposure_and_effect_in_Bulgarian_petrochemical_workers_exposed_to_benzene","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-related-work-grid-card-view-pdf" href="https://www.academia.edu/20009742/Biomarkers_of_exposure_and_effect_in_Bulgarian_petrochemical_workers_exposed_to_benzene"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="2" data-entity-id="54008333" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/54008333/Environmental_Assessment_and_Evaluation_of_Oxidative_Stress_and_Genotoxicity_Biomarkers_Related_to_Chronic_Occupational_Exposure_to_Benzene">Environmental Assessment and Evaluation of Oxidative Stress and Genotoxicity Biomarkers Related to Chronic Occupational Exposure to Benzene</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="118142759" href="https://independent.academia.edu/RitaMattos2">Rita Mattos</a></div><p class="ds-related-work--metadata ds2-5-body-xs">International Journal of Environmental Research and Public Health</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Environmental Assessment and Evaluation of Oxidative Stress and Genotoxicity Biomarkers Related to Chronic Occupational Exposure to Benzene","attachmentId":70579768,"attachmentType":"pdf","work_url":"https://www.academia.edu/54008333/Environmental_Assessment_and_Evaluation_of_Oxidative_Stress_and_Genotoxicity_Biomarkers_Related_to_Chronic_Occupational_Exposure_to_Benzene","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-related-work-grid-card-view-pdf" href="https://www.academia.edu/54008333/Environmental_Assessment_and_Evaluation_of_Oxidative_Stress_and_Genotoxicity_Biomarkers_Related_to_Chronic_Occupational_Exposure_to_Benzene"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container 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