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platelets</title> <meta name="description" content="Search results for: platelets"> <meta name="keywords" content="platelets"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" 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style="font-size:.9rem"><span class="badge badge-info">72</span> Relationship of Mean Platelets Volume with Ischemic Cerebrovascular Stroke</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pritam%20Kitey">Pritam Kitey</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Platelets play a key role in the development of atherothrombosis, a major contributor of cardiovascular evevts. The contributor of platelets to cardiovascular events has been noted for decades. Mean paltelets volume [MPV] is a marker of platelets size that is easily determined on routine automated haemograms and routinely available at low cost. Subjects with higher MPV have larger platelets that are metabolically and enzamatically more active and have greater prothombotic potential than smaller platelets. In fact several studies have demonstrated a significant association between higher MPV and an increased incidence of cerebrovascular events and all-cause mortality. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mean%20paltelets%20volume%20%28MPV%29" title="mean paltelets volume (MPV)">mean paltelets volume (MPV)</a>, <a href="https://publications.waset.org/abstracts/search?q=platelets" title=" platelets"> platelets</a>, <a href="https://publications.waset.org/abstracts/search?q=cerebrovascular%20stroke" title=" cerebrovascular stroke"> cerebrovascular stroke</a>, <a href="https://publications.waset.org/abstracts/search?q=cardiovascular%20events" title=" cardiovascular events "> cardiovascular events </a> </p> <a href="https://publications.waset.org/abstracts/17896/relationship-of-mean-platelets-volume-with-ischemic-cerebrovascular-stroke" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17896.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">185</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">71</span> The Role Of Diallyl Trisulﬁde As A Suppressor In Activated-Platelets Induced Human Breast Cancer MDA-MB-435s Cells Hematogenous Metastasis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yuping%20Liu">Yuping Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Li%20Tao"> Li Tao</a>, <a href="https://publications.waset.org/abstracts/search?q=Yin%20Lu"> Yin Lu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Accumulating evidence has been shown that diallyl trisulﬁde (DATS) from garlic may reduce the risk of developing several types of cancer. In view of the dynamic crosstalk interplayed by tumor cells and platelets in hematogenous metastasis, we demonstrate the effectiveness of DATS on the metastatic behaviors of MDA-MB-435s human breast cancer cell line co-incubated with activated platelets. Indeed, our data identified that DATS significantly blocked platelets fouction induced by PAF, followed by the decreased production of TXB2. DATS was found to dose-dependently suppressed MDA-MB-435s cell migration and invasion in presence of activated platelets by PAF in vitro. Furthermore, the expression, secretion and enzymatic activity of matrix metalloproteinase (MMP)-2/9, as well as the luciferase activity of upstream regulator NF-κB in MDA-MB-435s, were obviously diminished by DATS. In parallel, DATS blocked upstream NF-κB activation signaling complexes composed of extracellular signal-related kinase (ERK) as assessed by measuring the levels of the phosphorylated forms. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DATS" title="DATS">DATS</a>, <a href="https://publications.waset.org/abstracts/search?q=ERK" title=" ERK"> ERK</a>, <a href="https://publications.waset.org/abstracts/search?q=metastasis" title=" metastasis"> metastasis</a>, <a href="https://publications.waset.org/abstracts/search?q=MMPs" title=" MMPs"> MMPs</a>, <a href="https://publications.waset.org/abstracts/search?q=NF-%CE%BAB" title=" NF-κB"> NF-κB</a>, <a href="https://publications.waset.org/abstracts/search?q=platelet" title=" platelet"> platelet</a> </p> <a href="https://publications.waset.org/abstracts/2843/the-role-of-diallyl-trisulfide-as-a-suppressor-in-activated-platelets-induced-human-breast-cancer-mda-mb-435s-cells-hematogenous-metastasis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2843.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">386</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">70</span> Correlation Mapping for Measuring Platelet Adhesion</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eunseop%20Yeom">Eunseop Yeom</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Platelets can be activated by the surrounding blood flows where a blood vessel is narrowed as a result of atherosclerosis. Numerous studies have been conducted to identify the relation between platelets activation and thrombus formation. To measure platelet adhesion, this study proposes an image analysis technique. Blood samples are delivered in the microfluidic channel, and then platelets are activated by a stenotic micro-channel with 90% severity. By applying proposed correlation mapping, which visualizes decorrelation of the streaming blood flow, the area of adhered platelets (APlatelet) was estimated without labeling platelets. In order to evaluate the performance of correlation mapping on the detection of platelet adhesion, the effect of tile size was investigated by calculating 2D correlation coefficients with binary images obtained by manual labeling and the correlation mapping method with different sizes of the square tile ranging from 3 to 50 pixels. The maximum 2D correlation coefficient is observed with the optimum tile size of 5×5 pixels. As the area of the platelet adhesion increases, the platelets plug the channel and there is only a small amount of blood flows. This image analysis could provide new insights for better understanding of the interactions between platelet aggregation and blood flows in various physiological conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=platelet%20activation" title="platelet activation">platelet activation</a>, <a href="https://publications.waset.org/abstracts/search?q=correlation%20coefficient" title=" correlation coefficient"> correlation coefficient</a>, <a href="https://publications.waset.org/abstracts/search?q=image%20analysis" title=" image analysis"> image analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20rate" title=" shear rate"> shear rate</a> </p> <a href="https://publications.waset.org/abstracts/87040/correlation-mapping-for-measuring-platelet-adhesion" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87040.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">335</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">69</span> Assessment of Platelet and Lymphocyte Interaction in Autoimmune Hyperthyroidism</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ma%C5%82gorzata%20Tomczy%C5%84ska">Małgorzata Tomczyńska</a>, <a href="https://publications.waset.org/abstracts/search?q=Joanna%20Saluk-Bijak"> Joanna Saluk-Bijak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Graves’ disease is a frequent organ-specific autoimmune thyroid disease, which characterized by the presence of different kind autoantibodies, that, in most cases, act as agonists of the thyrotropin receptor, leading to hyperthyroidism. Role of platelets and lymphocytes can be modulated in the pathophysiology of thyroid autoimmune diseases. Interference in the physiology of platelets can lead to enhanced activity of these cells. Activated platelets can bind to circulating lymphocytes and to affect lymphocyte adhesion. Platelets and lymphocytes can regulate mutual functions. Therefore, the activation of T lymphocytes, as well as blood platelets, is associated with the development of inflammation and oxidative stress within the target tissue. The present study was performed to investigate a platelet-lymphocyte relation by assessing the degree of their mutual aggregation in whole blood of patients with Graves’ disease. Also, the purpose of this study was to examine the impact of platelet interaction on lymphocyte migration capacity. Methods: 30 patients with Graves’ disease were recruited in the study. The matched 30 healthy subjects were served as the control group. Immunophenotyping of lymphocytes was carried out by flow cytometry method. A CytoSelect™ Cell Migration Assay Kit was used to evaluate lymphocyte migration and adhesion to blood platelets. Visual assessment of lymphocyte-platelet aggregate morphology was done using confocal microscope after magnetic cell isolation by Miltenyi Biotec. Results: The migration and functional responses of lymphocytes to blood platelets were greater in the group of Graves’ disease patients compared with healthy controls. The group of Graves’ disease patients exhibited a reduced T lymphocyte and a higher B cell count compared with controls. Based on microscopic analysis, more platelet-lymphocyte aggregates were found in patients than in control. Conclusions: Studies have shown that in Graves' disease, lymphocytes show increased platelet affinity, more strongly migrating toward them, and forming mutual cellular conglomerates. This may be due to the increased activation of blood platelets in this disease. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=blood%20platelets" title="blood platelets">blood platelets</a>, <a href="https://publications.waset.org/abstracts/search?q=cell%20migration" title=" cell migration"> cell migration</a>, <a href="https://publications.waset.org/abstracts/search?q=Graves%E2%80%99%20disease" title=" Graves’ disease"> Graves’ disease</a>, <a href="https://publications.waset.org/abstracts/search?q=lymphocytes" title=" lymphocytes"> lymphocytes</a>, <a href="https://publications.waset.org/abstracts/search?q=lymphocyte-platelet%20aggregates" title=" lymphocyte-platelet aggregates"> lymphocyte-platelet aggregates</a> </p> <a href="https://publications.waset.org/abstracts/78333/assessment-of-platelet-and-lymphocyte-interaction-in-autoimmune-hyperthyroidism" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78333.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">227</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">68</span> Subdural Hematoma: A Rare Complication of ITP</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Faisal%20Khilji">Muhammad Faisal Khilji</a>, <a href="https://publications.waset.org/abstracts/search?q=Rana%20Shoaib%20Hamid"> Rana Shoaib Hamid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Subdural hematoma (SDH) is an extremely rare complication of immune thrombocytopenic purpura (ITP). We present a case of a 34 years old female who presented to the Emergency department of a tertiary care hospital with complaints of headache, on and off gums bleeding and upper respiratory tract symptoms for the last two weeks. Examination was unremarkable except some purpura over limbs. Investigations revealed zero platelets and peripheral film suggestive of ITP. Computerized tomography (CT) brain revealed bilateral SDH in the frontal areas extending into Falx cerebri. Impression of ITP with SDH was made. Patient was treated with intravenous immunoglobulin (IVIg), methyl prednisolone and initial Platelets transfusion. Patient recovered uneventfully with platelets reaching normal levels within a few days and resolution of SDH without surgery. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=headache" title="headache">headache</a>, <a href="https://publications.waset.org/abstracts/search?q=immune%20thrombocytopenia" title=" immune thrombocytopenia"> immune thrombocytopenia</a>, <a href="https://publications.waset.org/abstracts/search?q=purpura" title=" purpura"> purpura</a>, <a href="https://publications.waset.org/abstracts/search?q=subdural%20hematoma" title=" subdural hematoma"> subdural hematoma</a> </p> <a href="https://publications.waset.org/abstracts/18984/subdural-hematoma-a-rare-complication-of-itp" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18984.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">398</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">67</span> Clinical Evaluation of Neutrophil to Lymphocytes Ratio and Platelets to Lymphocytes Ratio in Immune Thrombocytopenic Purpura</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aisha%20Arshad">Aisha Arshad</a>, <a href="https://publications.waset.org/abstracts/search?q=Samina%20Naz%20Mukry"> Samina Naz Mukry</a>, <a href="https://publications.waset.org/abstracts/search?q=Tahir%20Shamsi"> Tahir Shamsi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Immune thrombocytopenia (ITP) is an autoimmune disorder. Besides platelets counts, immature platelets fraction (IPF) can be used as tool to predict megakaryocytic activity in ITP patients. The clinical biomarkers like Neutrophils to lymphocytes ratio (NLR) and platelet to lymphocytes ratio(PLR) predicts inflammation and can be used as prognostic markers.The present study was planned to assess the ratios in ITP and their utility in predicting prognosis after treatment. Methods: A total of 111 patients of ITP with same number of healthy individuals were included in this case control study during the period of January 2015 to December 2017.All the ITP patients were grouped according to guidelines of International working group of ITP. A 3cc blood was collected in EDTA tube and blood parameters were evaluated using Sysmex 1000 analyzer.The ratios were calculated by using absolute counts of Neutrophils,Lymphocytes and platelets.The significant (p=<0.05) difference between ITP patients and healthy control groups was determined by Kruskal wallis test, Dunn’s test and spearman’s correlation test was done using SPSS version 23. Results: The significantly raised total leucocytes counts (TLC) and IPF along with low platelets counts were observed in ITP patients as compared to healthy controls.In ITP groups,very low platelet count with median and IQR of 2(3.8)3x109/l with highest mean and IQR IPF 25.4(19.8)% was observed in newly diagnosed ITP group. The NLR was high with prognosis of disease as higher levels were observed in P-ITP. The PLR was significantly low in ND-ITP ,P-ITP, C-ITP, R-ITP and compared to controls with p=<0.001 as platelet were less in number in all ITP patients. Conclusion: The IPF can be used in evaluation of bone marrow response in ITP. The simple, reliable and calculated NLR and PLR ratios can be used in predicting prognosis and response to treatment in ITP and to some extend the severity of disease. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=neutrophils" title="neutrophils">neutrophils</a>, <a href="https://publications.waset.org/abstracts/search?q=platelets" title=" platelets"> platelets</a>, <a href="https://publications.waset.org/abstracts/search?q=lymphocytes" title=" lymphocytes"> lymphocytes</a>, <a href="https://publications.waset.org/abstracts/search?q=infection" title=" infection"> infection</a> </p> <a href="https://publications.waset.org/abstracts/154401/clinical-evaluation-of-neutrophil-to-lymphocytes-ratio-and-platelets-to-lymphocytes-ratio-in-immune-thrombocytopenic-purpura" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/154401.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">95</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">66</span> Double Functionalization of Magnetic Colloids with Electroactive Molecules and Antibody for Platelet Detection and Separation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Feixiong%20Chen">Feixiong Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Naoufel%20%20Haddour"> Naoufel Haddour</a>, <a href="https://publications.waset.org/abstracts/search?q=Marie%20Frenea-Robin"> Marie Frenea-Robin</a>, <a href="https://publications.waset.org/abstracts/search?q=Yves%20%20M%C3%A9Rieux"> Yves MéRieux</a>, <a href="https://publications.waset.org/abstracts/search?q=Yann%20Chevolot"> Yann Chevolot</a>, <a href="https://publications.waset.org/abstracts/search?q=Virginie%20Monnier"> Virginie Monnier</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Neonatal thrombopenia occurs when the mother generates antibodies against her baby’s platelet antigens. It is particularly critical for newborns because it can cause coagulation troubles leading to intracranial hemorrhage. In this case, diagnosis must be done quickly to make platelets transfusion immediately after birth. Before transfusion, platelet antigens must be tested carefully to avoid rejection. The majority of thrombopenia (95 %) are caused by antibodies directed against Human Platelet Antigen 1a (HPA-1a) or 5b (HPA-5b). The common method for antigen platelets detection is polymerase chain reaction allowing for identification of gene sequence. However, it is expensive, time-consuming and requires significant blood volume which is not suitable for newborns. We propose to develop a point-of-care device based on double functionalized magnetic colloids with 1) antibodies specific to antigen platelets and 2) highly sensitive electroactive molecules in order to be detected by an electrochemical microsensor. These magnetic colloids will be used first to isolate platelets from other blood components, then to capture specifically platelets bearing HPA-1a and HPA-5b antigens and finally to attract them close to sensor working electrode for improved electrochemical signal. The expected advantages are an assay time lower than 20 min starting from blood volume smaller than 100 µL. Our functionalization procedure based on amine dendrimers and NHS-ester modification of initial carboxyl colloids will be presented. Functionalization efficiency was evaluated by colorimetric titration of surface chemical groups, zeta potential measurements, infrared spectroscopy, fluorescence scanning and cyclic voltammetry. Our results showed that electroactive molecules and antibodies can be immobilized successfully onto magnetic colloids. Application of a magnetic field onto working electrode increased the detected electrochemical signal. Magnetic colloids were able to capture specific purified antigens extracted from platelets. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Magnetic%20Nanoparticles" title="Magnetic Nanoparticles ">Magnetic Nanoparticles </a>, <a href="https://publications.waset.org/abstracts/search?q=Electroactive%20Molecules" title=" Electroactive Molecules"> Electroactive Molecules</a>, <a href="https://publications.waset.org/abstracts/search?q=Antibody" title=" Antibody"> Antibody</a>, <a href="https://publications.waset.org/abstracts/search?q=Platelet" title=" Platelet"> Platelet</a> </p> <a href="https://publications.waset.org/abstracts/66772/double-functionalization-of-magnetic-colloids-with-electroactive-molecules-and-antibody-for-platelet-detection-and-separation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/66772.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">270</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">65</span> Exfoliation of Functionalized High Structural Integrity Graphene Nanoplatelets at Extremely Low Temperature</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohannad%20N.%20H.%20Al-Malichi">Mohannad N. H. Al-Malichi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Because of its exceptional properties, graphene has become the most promising nanomaterial for the development of a new generation of advanced materials from battery electrodes to structural composites. However, current methods to meet requirements for the mass production of high-quality graphene are limited by harsh oxidation, high temperatures, and tedious processing steps. To extend the scope of the bulk production of graphene, herein, a facile, reproducible and cost-effective approach has been developed. This involved heating a specific mixture of chemical materials at an extremely low temperature (70 C) for a short period (7 minutes) to exfoliate functionalized graphene platelets with high structural integrity. The obtained graphene platelets have an average thickness of 3.86±0.71 nm and a lateral size less than ~2 µm with a low defect intensity ID/IG ~0.06. The thin film (~2 µm thick) exhibited a low surface resistance of ~0.63 Ω/sq⁻¹, confirming its high electrical conductivity. Additionally, these nanoplatelets were decorated with polar functional groups (epoxy and carboxyl groups), thus have the potential to toughen and provide multifunctional polymer nanocomposites. Moreover, such a simple method can be further exploited for the novel exfoliation of other layered two-dimensional materials such as MXenes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=functionalized%20graphene%20nanoplatelets" title="functionalized graphene nanoplatelets">functionalized graphene nanoplatelets</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20structural%20integrity%20graphene" title=" high structural integrity graphene"> high structural integrity graphene</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20temperature%20exfoliation%20of%20graphene" title=" low temperature exfoliation of graphene"> low temperature exfoliation of graphene</a>, <a href="https://publications.waset.org/abstracts/search?q=functional%20graphene%20platelets" title=" functional graphene platelets"> functional graphene platelets</a> </p> <a href="https://publications.waset.org/abstracts/121709/exfoliation-of-functionalized-high-structural-integrity-graphene-nanoplatelets-at-extremely-low-temperature" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/121709.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">120</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">64</span> Epidemiological, Clinical, Diagnostic Indicators and Treatment Efficiency of Patients with Immune Thrombocytopenic Purpura Diagnosed in Albania</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sara%20Grazhdani">Sara Grazhdani</a>, <a href="https://publications.waset.org/abstracts/search?q=Alma%20Cili"> Alma Cili</a>, <a href="https://publications.waset.org/abstracts/search?q=Arben%20Ivanaj"> Arben Ivanaj</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Immune Thrombocytopenic Purpura is an autoimmune disease characterized by the destruction of platelets by immune mediators, their deficient production in the red bone marrow and increased splenic sequestration, leading to the appearance of thrombocytopenia and increased risk of hemorrhage. Treatment is indicated in patients with low platelet counts (<30 x 10 9 /L) who present clinically with hemorrhagic events or are at increased risk for hemorrhage. The goal of the treatment remains (I) prevention of hemorrhagic events and deaths resulting from them, (II) reaching an adequate level of the number of platelets, (III) treatment of patients with as few toxic effects as possible. Corticosteroid therapy remains the first choice in the treatment of patients with Primary Immune Thrombocytopenic Purpura. Rituximab (Mabthera) remains the first choice in the second line in the treatment of patients with Immune Thrombocytopenic Purpura, refractory to the use of cortisones. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ITP" title="ITP">ITP</a>, <a href="https://publications.waset.org/abstracts/search?q=rituximab" title=" rituximab"> rituximab</a>, <a href="https://publications.waset.org/abstracts/search?q=prednisolone" title=" prednisolone"> prednisolone</a>, <a href="https://publications.waset.org/abstracts/search?q=relapse" title=" relapse"> relapse</a> </p> <a href="https://publications.waset.org/abstracts/163960/epidemiological-clinical-diagnostic-indicators-and-treatment-efficiency-of-patients-with-immune-thrombocytopenic-purpura-diagnosed-in-albania" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163960.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">111</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">63</span> Electrical Properties of Nanocomposite Fibres Based On Cellulose and Graphene Nanoplatelets Prepared Using Ionic Liquids </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shaya%20Mahmoudian">Shaya Mahmoudian</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Reza%20Sazegar"> Mohammad Reza Sazegar</a>, <a href="https://publications.waset.org/abstracts/search?q=Nazanin%20Afshari"> Nazanin Afshari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Graphene, a single layer of carbon atoms in a hexagonal lattice, has recently attracted great attention due to its unique mechanical, thermal and electrical properties. The high aspect ratio and unique surface features of graphene resulted in significant improvements of the nano composites properties. In this study, nano composite fibres made of cellulose and graphene nano platelets were wet spun from solution by using ionic liquid, 1-ethyl-3-methylimidazolium acetate (EMIMAc) as solvent. The effect of graphene loading on the thermal and electrical properties of the nanocomposite fibres was investigated. The nano composite fibres characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis. XRD analysis revealed a cellulose II crystalline structure for regenerated cellulose and the nano composite fibres. SEM images showed a homogenous morphology and round cross section for the nano composite fibres along with well dispersion of graphene nano platelets in regenerated cellulose matrix. The incorporation of graphene into cellulose matrix generated electrical conductivity. At 6 wt. % of graphene, the electrical conductivity was 4.7 × 10-4 S/cm. The nano composite fibres also showed considerable improvements in thermal stability and char yield compared to pure regenerated cellulose fibres. This work provides a facile and environmentally friendly method of preparing nano composite fibres based on cellulose and graphene nano platelets that can find several applications in cellulose-based carbon fibres, conductive fibres, apparel, etc. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanocomposite" title="nanocomposite">nanocomposite</a>, <a href="https://publications.waset.org/abstracts/search?q=graphene%20nanoplatelets" title=" graphene nanoplatelets"> graphene nanoplatelets</a>, <a href="https://publications.waset.org/abstracts/search?q=regenerated%20cellulose" title=" regenerated cellulose"> regenerated cellulose</a>, <a href="https://publications.waset.org/abstracts/search?q=electrical%20properties" title=" electrical properties"> electrical properties</a> </p> <a href="https://publications.waset.org/abstracts/30979/electrical-properties-of-nanocomposite-fibres-based-on-cellulose-and-graphene-nanoplatelets-prepared-using-ionic-liquids" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30979.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">350</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">62</span> The Effect of Cigarette Smoking on the Production of 20-Hydroxyeicosatetraenoic Acid in Human Platelet</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yazun%20Jarrar">Yazun Jarrar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Smoking has effect on platelet aggregation and the activity of anti-platelet drugs. The chemical 20-hydroxyeicosatetraenoic acid (20-HETE) is a cardiotoxic arachidonic acid metabolite which increases platelet aggregation. In this study, we investigated the influence of cigarette smoking on 20-HETE levels and protein expression of 20-HETE producing enzyme CYP4A11 in isolated platelets from smoker and non-smoker volunteers. The protein expression and 20-HETE levels were analyzed using immunoblot and High-Performance Liquid Chromatography with Mass Spectrometry (HPL-MS) assays. The results showed that 20-HETE level was higher significantly among smokers than non-smokers (t-test, p-value<0.05). The protein expression of CYP4A11 was significantly higher (t-test, p-value<0.05) among the platelets of smokers. We concluded that cigarette smoking increased the level of platelet activator 20-HETE through increasing the protein expression of CYP4A11. These findings may increase the understanding of smoking-drug interaction during antiplatelets therapy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=smoking" title="smoking">smoking</a>, <a href="https://publications.waset.org/abstracts/search?q=20-HETE" title=" 20-HETE"> 20-HETE</a>, <a href="https://publications.waset.org/abstracts/search?q=CYP4A11" title=" CYP4A11"> CYP4A11</a>, <a href="https://publications.waset.org/abstracts/search?q=platelet" title=" platelet"> platelet</a> </p> <a href="https://publications.waset.org/abstracts/57015/the-effect-of-cigarette-smoking-on-the-production-of-20-hydroxyeicosatetraenoic-acid-in-human-platelet" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57015.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">184</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">61</span> Modified Surface Morphology, Structure and Enhanced Weathering Performance of Polyester-Urethane/Organoclay Nanocomposite Coatings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gaurav%20Verma">Gaurav Verma </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Organoclay loaded (0-5 weight %) polyester-urethane (PU) coatings were prepared with a branched hydroxyl-bearing polyester and an aliphatic poly-isocyanate. TEM micrographs show partial exfoliation and intercalation of clay platelets in organoclay-polyester dispersions. AFM surface images reveals that the PU hard domains tend to regularise and also self-organise into spherical shapes of sizes 50 nm (0 wt %), 60 nm (2 wt %) and 190 nm (4 wt %) respectively. IR analysis shows that PU chains have increasing tendency to interact with exfoliated clay platelets through hydrogen bonding. This interaction strengthens inter-chain linkages in PU matrix and hence improves anti-ageing properties. 1000 hours of accelerated weathering was evaluated by ATR spectroscopy, while yellowing and overall discoloration was quantified by the Δb* and ΔE* values of the CIELab colour scale. Post-weathering surface properties also showed improvement as the loss of thickness and reduction in gloss in neat PU was 25% and 42%; while it was just 3.5% and 14% respectively for the 2 wt% nanocomposite coating. This work highlights the importance of modifying surface and bulk properties of PU coatings at nanoscale, which led to improved performance in accelerated weathering conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coatings" title="coatings">coatings</a>, <a href="https://publications.waset.org/abstracts/search?q=AFM" title=" AFM"> AFM</a>, <a href="https://publications.waset.org/abstracts/search?q=ageing" title=" ageing"> ageing</a>, <a href="https://publications.waset.org/abstracts/search?q=spectroscopy" title=" spectroscopy"> spectroscopy</a> </p> <a href="https://publications.waset.org/abstracts/9552/modified-surface-morphology-structure-and-enhanced-weathering-performance-of-polyester-urethaneorganoclay-nanocomposite-coatings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9552.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">454</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">60</span> Correlation of Hyperlipidemia with Platelet Parameters in Blood Donors</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Nishat%20Fatima%20Rizvi">S. Nishat Fatima Rizvi</a>, <a href="https://publications.waset.org/abstracts/search?q=Tulika%20Chandra"> Tulika Chandra</a>, <a href="https://publications.waset.org/abstracts/search?q=Abbas%20Ali%20Mahdi"> Abbas Ali Mahdi</a>, <a href="https://publications.waset.org/abstracts/search?q=Devisha%20Agarwal"> Devisha Agarwal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Blood components are an unexplored area prone to numerous discoveries which influence patient’s care. Experiments at different levels will further change the present concept of blood banking. Hyperlipidemia is a condition of elevated plasma level of low-density lipoprotein (LDL) as well as decreased plasma level of high-density lipoprotein (HDL). Studies show that platelets play a vital role in the progression of atherosclerosis and thrombosis, a major cause of death worldwide. They are activated by many triggers like elevated LDL in the blood resulting in aggregation and formation of plaques. Hyperlipidemic platelets are frequently transfused to patients with various disorders. Screening the random donor platelets for hyperlipidemia and correlating the condition with other donor criteria such as lipid rich diet, oral contraceptive pills intake, weight, alcohol intake, smoking, sedentary lifestyle, family history of heart diseases will lead to further deciding the exclusion criteria for donor selection. This will help in making the patients safe as well as the donor deferral criteria more stringent to improve the quality of blood supply. Technical evaluation and assessment will enable blood bankers to supply safe blood and improve the guidelines for blood safety. Thus, we try to study the correlation between hyperlipidemic platelets with platelets parameters, weight, and specific history of the donors. Methodology: This case control study included 100 blood samples of Blood donors, out of 100 only 30 samples were found to be hyperlipidemic and were included as cases, while rest were taken as controls. Lipid Profile were measured by fully automated analyzer (TRIGL:triglycerides),(LDL-C:LDL –Cholesterol plus 2nd generation),CHOL 2: Cholesterol Gen 2), HDL C 3: HDL-Cholesterol plus 3rdgeneration)-(Cobas C311-Roche Diagnostic).And Platelets parameters were analyzed by the Sysmex KX21 automated hematology analyzer. Results: A significant correlation was found amongst hyperlipidemic level in single time donor. In which 80% donors have history of heart disease, 66.66% donors have sedentary life style, 83.3% donors were smokers, 50% donors were alcoholic, and 63.33% donors had taken lipid rich diet. Active physical activity was found amongst 40% donors. We divided donors sample in two groups based on their body weight. In group 1, hyperlipidemic samples: Platelet Parameters were 75% in normal 25% abnormal in >70Kg weight while in 50-70Kg weight 90% were normal 10% were abnormal. In-group 2, Non Hyperlipidemic samples: platelet Parameters were 95% normal and 5% abnormal in >70Kg weight, while in 50-70Kg Weight, 66.66% normal and 33.33% abnormal. Conclusion: The findings indicate that Hyperlipidemic status of donors may affect the platelet parameters and can be distinguished on history by their weight, Smoking, Alcoholic intake, Sedentary lifestyle, Active physical activity, Lipid rich diet, Oral contraceptive pills intake, and Family history of heart disease. However further studies on a large sample size will affirm this finding. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=blood%20donors" title="blood donors">blood donors</a>, <a href="https://publications.waset.org/abstracts/search?q=hyperlipidemia" title=" hyperlipidemia"> hyperlipidemia</a>, <a href="https://publications.waset.org/abstracts/search?q=platelet" title=" platelet"> platelet</a>, <a href="https://publications.waset.org/abstracts/search?q=weight" title=" weight"> weight</a> </p> <a href="https://publications.waset.org/abstracts/47119/correlation-of-hyperlipidemia-with-platelet-parameters-in-blood-donors" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47119.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">314</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">59</span> Investigation of the Effects of Aerobic Exercise Programs on Hematological Parameters of Sedentary People</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sanjeev%20Kumar">Sanjeev Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=Swati%20Choudhary"> Swati Choudhary</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: A variety of studies warn that sedentary lifestyles can contribute to many preventable causes of death. This study was taken to determine the effects of two types of aerobic training programs on erythrocytes, leukocytes, hemoglobin concentration (Hb), platelets and hematocrit of sedentary people (N=60) with age group 20 to 30 years. Methods: All the subjects were randomly divided into three groups i.e. two experiments groups (aerobic dance & cardio fitness) and control group. Each group having 10 male and 10 females. Experimental groups undergone 60 minutes of training 5 times a week for 12 weeks whereas the control group did not participate in any training program except their daily routine. The aerobic dance group was chosen to perform exercise like step –touch, side-to-side, V-step and hand and body movements, etc. The cardio fitness group was chosen to perform exercises with modern fitness equipment like treadmill, elliptical trainer, stationary bike and rowing machine. Rating of perceived exertion (RPE) scale developed by Gunner Borg was used to monitor the intensity of the workout. Aerobic programs were encompassed of low-impact (0- 4 week & perceived exertion from 6 to 12), moderate-impact (4-8 week and perceived exertion from 12 to 16) and high-impact (8- 12 week & perceived exertion from 16 to 20). Results: To test the effectiveness of training programs paired t-test was used and significant difference (p<0.05) was observed in erythrocytes, hemoglobin concentration, platelets, hematocrit but no significant effects of training was found in leukocytes (p>0.05). Paired t-test also showed that no effect of time was seen in the control group in all the cases (p>0.05). Further analysis of covariance was used to know which program was more effective and it was seen that F value was found significant in the case of erythrocytes, hemoglobin concentration, platelets, and hematocrit as their associated p-value (p<0.05) is lesser than 0.05. As F value was found significant for hematological parameters, fishers least significant difference test was used and results of post hoc mean comparison indicated that experimental groups (aerobic dance group and cardio fitness group) had significant difference with control group in erythrocytes, hemoglobin concentration, platelets and hematocrit and insignificant difference was found between aerobic dance group & cardio fitness group in all the cases. Thus, it may be concluded that in general, both the aerobic training programs had adequate effects on all the hematological parameters except leukocytes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aerobic%20dance" title="aerobic dance">aerobic dance</a>, <a href="https://publications.waset.org/abstracts/search?q=cardio%20fitness" title=" cardio fitness"> cardio fitness</a>, <a href="https://publications.waset.org/abstracts/search?q=hematological%20variables" title=" hematological variables"> hematological variables</a>, <a href="https://publications.waset.org/abstracts/search?q=rating%20perceived%20exertion%20scale" title=" rating perceived exertion scale"> rating perceived exertion scale</a> </p> <a href="https://publications.waset.org/abstracts/56623/investigation-of-the-effects-of-aerobic-exercise-programs-on-hematological-parameters-of-sedentary-people" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56623.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">272</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">58</span> Discrete Element Simulations of Composite Ceramic Powders </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Julia%20Cristina%20Bonaldo">Julia Cristina Bonaldo</a>, <a href="https://publications.waset.org/abstracts/search?q=Christophe%20L.%20Martin"> Christophe L. Martin</a>, <a href="https://publications.waset.org/abstracts/search?q=Severine%20Romero%20Baivier"> Severine Romero Baivier</a>, <a href="https://publications.waset.org/abstracts/search?q=Stephane%20Mazerat"> Stephane Mazerat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Alumina refractories are commonly used in steel and foundry industries. These refractories are prepared through a powder metallurgy route. They are a mixture of hard alumina particles and graphite platelets embedded into a soft carbonic matrix (binder). The powder can be cold pressed isostatically or uniaxially, depending on the application. The compact is then fired to obtain the final product. The quality of the product is governed by the microstructure of the composite and by the process parameters. The compaction behavior and the mechanical properties of the fired product depend greatly on the amount of each phase, on their morphology and on the initial microstructure. In order to better understand the link between these parameters and the macroscopic behavior, we use the Discrete Element Method (DEM) to simulate the compaction process and the fracture behavior of the fired composite. These simulations are coupled with well-designed experiments. Four mixes with various amounts of Al₂O₃ and binder were tested both experimentally and numerically. In DEM, each particle is modelled and the interactions between particles are taken into account through appropriate contact or bonding laws. Here, we model a bimodal mixture of large Al₂O₃ and small Al₂O₃ covered with a soft binder. This composite is itself mixed with graphite platelets. X-ray tomography images are used to analyze the morphologies of the different components. Large Al₂O₃ particles and graphite platelets are modelled in DEM as sets of particles bonded together. The binder is modelled as a soft shell that covers both large and small Al₂O₃ particles. When two particles with binder indent each other, they first interact through this soft shell. Once a critical indentation is reached (towards the end of compaction), hard Al₂O₃ - Al₂O₃ contacts appear. In accordance with experimental data, DEM simulations show that the amount of Al₂O₃ and the amount of binder play a major role for the compaction behavior. The graphite platelets bend and break during the compaction, also contributing to the macroscopic stress. Firing step is modeled in DEM by ascribing bonds to particles which contact each other after compaction. The fracture behavior of the compacted mixture is also simulated and compared with experimental data. Both diametrical tests (Brazilian tests) and triaxial tests are carried out. Again, the link between the amount of Al₂O₃ particles and the fracture behavior is investigated. The methodology described here can be generalized to other particulate materials that are used in the ceramic industry. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cold%20compaction" title="cold compaction">cold compaction</a>, <a href="https://publications.waset.org/abstracts/search?q=composites" title=" composites"> composites</a>, <a href="https://publications.waset.org/abstracts/search?q=discrete%20element%20method" title=" discrete element method"> discrete element method</a>, <a href="https://publications.waset.org/abstracts/search?q=refractory%20materials" title=" refractory materials"> refractory materials</a>, <a href="https://publications.waset.org/abstracts/search?q=x-ray%20tomography" title=" x-ray tomography"> x-ray tomography</a> </p> <a href="https://publications.waset.org/abstracts/109186/discrete-element-simulations-of-composite-ceramic-powders" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/109186.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">138</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">57</span> Implementation of Tissue Engineering Technique to Nursing of Unhealed Diabetic Foot Lesion</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Basuki%20Supartono">Basuki Supartono</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Diabetic wound risks limb amputation, and the healing remains challenging. Chronic Hyperglycemia caused the insufficient inflammatory response and impaired ability of the cells to regenerate. Tissue Engineering Technique is mandatory. Methods: Tissue engineering (TE)-based therapy Utilizing mononuclear cells, plasma rich platelets, and collagen applied on the damaged tissue Results: TE technique resulting in acceptable outcomes. The wound healed completely in 2 months. No adverse effects. No allergic reaction. No morbidity and mortality Discussion: TE-based therapy utilizing mononuclear cells, plasma rich platelets, and collagen are safe and comfortable to fix damaged tissues. These components stop the chronic inflammatory process and increase cells' ability for regeneration and restoration of damaged tissues. Both of these allow the wound to regenerate and heal. Conclusion: TE-based therapy is safe and effectively treats unhealed diabetic lesion. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=diabetic%20foot%20lesion" title="diabetic foot lesion">diabetic foot lesion</a>, <a href="https://publications.waset.org/abstracts/search?q=tissue%20engineering%20technique" title=" tissue engineering technique"> tissue engineering technique</a>, <a href="https://publications.waset.org/abstracts/search?q=wound%20healing" title=" wound healing"> wound healing</a>, <a href="https://publications.waset.org/abstracts/search?q=stemcells" title=" stemcells"> stemcells</a> </p> <a href="https://publications.waset.org/abstracts/160271/implementation-of-tissue-engineering-technique-to-nursing-of-unhealed-diabetic-foot-lesion" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/160271.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">79</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">56</span> Large-Scale Screening for Membrane Protein Interactions Involved in Platelet-Monocyte Interactions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yi%20Sun">Yi Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=George%20Ed%20Rainger"> George Ed Rainger</a>, <a href="https://publications.waset.org/abstracts/search?q=Steve%20P.%20Watson"> Steve P. Watson</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Beyond the classical roles in haemostasis and thrombosis, platelets are important in the initiation and development of various thrombo-inflammatory diseases. In atherosclerosis and deep vein thrombosis, for example, platelets bridge monocytes with endothelium and form heterotypic aggregates with monocytes in the circulation. This can alter monocyte phenotype by inducing their activation, stimulating adhesion and migration. These interactions involve cell surface receptor-ligand pairs on both cells. This list is likely incomplete as new interactions of importance to platelet biology are continuing to be discovered as illustrated by our discovery of PEAR-1 binding to FcεR1α. Results: We have developed a highly sensitive avidity-based assay to identify novel extracellular interactions among 126 recombinantly-expressed platelet cell surface and secreted proteins involved in platelet aggregation. In this study, we will use this method to identify novel platelet-monocyte interactions. We aim to identify ligands for orphan receptors and novel partners of well-known proteins. Identified interactions will be studied in preliminary functional assays to demonstrate relevance to the inflammatory processes supporting atherogenesis. Conclusions: Platelet-monocyte interactions are essential for the development of thromboinflammatory disease. Up until relatively recently, technologies only allow us to limit our studies on each individual protein interaction at a single time. These studies propose for the first time to study the cell surface platelet-monocyte interactions in a systematic large-scale approach using a reliable screening method we have developed. If successful, this will likely to identify previously unknown ligands for important receptors that will be investigated in details and also provide a list of novel interactions for the field. This should stimulate studies on developing alternative therapeutic strategies to treat vascular inflammatory disorders such as atherosclerosis, DVT and sepsis and other clinically important inflammatory conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=membrane%20proteins" title="membrane proteins">membrane proteins</a>, <a href="https://publications.waset.org/abstracts/search?q=large-scale%20screening" title=" large-scale screening"> large-scale screening</a>, <a href="https://publications.waset.org/abstracts/search?q=platelets" title=" platelets"> platelets</a>, <a href="https://publications.waset.org/abstracts/search?q=recombinant%20expression" title=" recombinant expression"> recombinant expression</a> </p> <a href="https://publications.waset.org/abstracts/98148/large-scale-screening-for-membrane-protein-interactions-involved-in-platelet-monocyte-interactions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/98148.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">151</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">55</span> Predictive Value of Coagulopathy in Patients with Isolated Blunt Traumatic Brain Injury: A Cohort of Pakistani Population</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Waqas">Muhammad Waqas</a>, <a href="https://publications.waset.org/abstracts/search?q=Shahan%20Waheed"> Shahan Waheed</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohsin%20Qadeer"> Mohsin Qadeer</a>, <a href="https://publications.waset.org/abstracts/search?q=Ehsan%20Bari"> Ehsan Bari</a>, <a href="https://publications.waset.org/abstracts/search?q=Salman%20Ahmed"> Salman Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Iqra%20Patoli"> Iqra Patoli</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objective: To determine the value of aPTT, platelets and INR as the predictor of unfavorable outcomes in patients with blunt isolated traumatic brain injury. Methods: This was an observational cohort study conducted in a tertiary care facility from 1st January 2008 to 31st December 2012. All the patients with isolated traumatic brain injury presenting within 24 hours of injury were included in the study. Coagulation parameters at presentation were recorded and Glasgow Outcome Scale calculated on last follow up. Outcomes were dichotomized into favorable and unfavorable outcomes. Relationship of coagulopathy with GOS and unfavorable outcomes was calculated using Spearman`s correlation and area under curve ROC analysis. Results: 121 patients were included in the study. The incidence of coagulopathy was found to be 6 %. aPTT was found to a significantly associated with unfavorable outcomes with an AUC = 0.702 (95%CI = 0.602-0.802). Predictive value of platelets and INR was not found to be significant. Conclusion: Incidence of coagulopathy was found to be low in current population compared to data from the West. aPTT was found to be a good predictor of unfavorable outcomes compared with other parameters of coagulation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aPTT" title="aPTT">aPTT</a>, <a href="https://publications.waset.org/abstracts/search?q=coagulopathy" title=" coagulopathy"> coagulopathy</a>, <a href="https://publications.waset.org/abstracts/search?q=unfavorable%20outcomes" title=" unfavorable outcomes"> unfavorable outcomes</a>, <a href="https://publications.waset.org/abstracts/search?q=parameters" title=" parameters"> parameters</a> </p> <a href="https://publications.waset.org/abstracts/3076/predictive-value-of-coagulopathy-in-patients-with-isolated-blunt-traumatic-brain-injury-a-cohort-of-pakistani-population" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3076.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">480</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">54</span> Inhibitory Effects of PPARγ Ligand, KR-62980, on Collagen-Stimulated Platelet Activation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Su%20Bin%20Wang">Su Bin Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Jin%20Hee%20Ahn"> Jin Hee Ahn</a>, <a href="https://publications.waset.org/abstracts/search?q=Tong-Shin%20Chang"> Tong-Shin Chang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The peroxisome proliferator-activated receptors (PPARs) are member of nuclear receptor superfamily that act as a ligand-activated transcription factors. Although platelets lack a nucleus, previous studies have shown that PPARγ agonists, rosiglitazone, inhibited platelet activation induced by collagen. In this study, we investigated the inhibitory effects of KR-62980, a newly synthesized PPARγ agonist, on collagen receptor-stimulated platelet activation. The specific tyrosine phosphorylations of key components (Syk, Vav1, Btk and PLCγ2) for collagen receptor signaling pathways were suppressed by KR-62980. KR-62980 also attenuated downstream responses including cytosolic calcium elevation, P-selectin surface exposure, and integrin αIIbβ3 activation. PPARγ was found to associate with multiple proteins within the LAT signaling complex in collagen-stimulated platelets. This association was prevented by KR-62980, indicating a potential mechanism for PPARγ function in collagen-stimulated platelet activation. Furthermore, KR-62980 inhibited platelet aggregation and adhesion in response to collagen in vitro and prolonged in vivo thrombotic response in carotid arteries of mice. Collectively, these data suggest that KR-62980 inhibits collagen-stimulated platelet activation and thrombus formation through modulating the collagen receptor signaling pathways. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=KR-62980" title="KR-62980">KR-62980</a>, <a href="https://publications.waset.org/abstracts/search?q=PPAR%CE%B3" title=" PPARγ"> PPARγ</a>, <a href="https://publications.waset.org/abstracts/search?q=antiplatelet" title=" antiplatelet"> antiplatelet</a>, <a href="https://publications.waset.org/abstracts/search?q=thrombosis" title=" thrombosis"> thrombosis</a> </p> <a href="https://publications.waset.org/abstracts/47842/inhibitory-effects-of-ppargh-ligand-kr-62980-on-collagen-stimulated-platelet-activation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47842.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">334</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">53</span> Antioxidants Reveal Protection against the Biochemical Changes in Liver, Kidney, and Blood Profiles after Clindamycin/Ibuprofen Administration in Dental Patients</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gouda%20K.%20Helal">Gouda K. Helal</a>, <a href="https://publications.waset.org/abstracts/search?q=Marwa%20I.%20Shabayek"> Marwa I. Shabayek</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20A.%20El-Ramly"> Heba A. El-Ramly</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20A.%20Awida"> Heba A. Awida</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The adverse effects of Clindamycin (Clind.) / Ibuprofen (Ibu.) combination on liver, kidney, blood elements and the significances of antioxidants (N-acetylcysteine and Zinc) against these effects were evaluated. The study includes: Group I; control n=30, Group II; patients on Clind.300mg/Ibu.400mg twice daily for a week n=30, Group III; patients on Clind.300mg/Ibu.400mg+N-acetylcysteine 200mg twice daily for a week n=15 and Group IV; patients on Clind.300mg/Ibu.400mg+Zinc50mg twice daily for a week n=15. Serum malondialdehyde (MDA), alanine transferase (ALT), aspartate transferase (AST), γ glutamyl transferase (GGT), creatinine, blood urea nitrogen (BUN) were measured. Applying one way ANOVA followed by Tuckey Kramer post test, Group II showed significant increase in ALT, AST, GGT, BUN and decrease in Hb, RBCs, platelets than Group I. Group III showed significant decrease in ALT, AST, GGT, BUN than Group II. Moreover, Group IV showed significant decrease in ALT, AST, GGT and increase in Hb, RBCs, and platelets than Group II. Conclusively, Adding Zinc or N-acetylcysteine buffer the oxidative stress and improve the therapeutic outcome of Clindamycin/Ibuprofen combination. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=clindamycin" title="clindamycin">clindamycin</a>, <a href="https://publications.waset.org/abstracts/search?q=ibuprofen" title=" ibuprofen"> ibuprofen</a>, <a href="https://publications.waset.org/abstracts/search?q=adverse%20effects" title=" adverse effects"> adverse effects</a>, <a href="https://publications.waset.org/abstracts/search?q=antioxidant" title=" antioxidant"> antioxidant</a>, <a href="https://publications.waset.org/abstracts/search?q=zinc" title=" zinc"> zinc</a>, <a href="https://publications.waset.org/abstracts/search?q=N-acetylcysteine" title=" N-acetylcysteine"> N-acetylcysteine</a> </p> <a href="https://publications.waset.org/abstracts/12505/antioxidants-reveal-protection-against-the-biochemical-changes-in-liver-kidney-and-blood-profiles-after-clindamycinibuprofen-administration-in-dental-patients" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12505.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">383</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">52</span> Homogeneous Anti-Corrosion Coating of Spontaneously Dissolved Defect-Free Graphene</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20K.%20Bin%20Subhan">M. K. Bin Subhan</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Cullen"> P. Cullen</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Howard"> C. Howard</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A recent study by the World Corrosion Organization estimated that corrosion related damage causes $2.5tr worth of damage every year. As such, a low cost easily scalable solution is required to the corrosion problem which is economically viable. Graphene is an ideal anti-corrosion barrier layer material due to its excellent barrier properties and chemical stability, which makes it impermeable to all molecules. However, attempts to employ graphene as a barrier layer has been hampered by the fact that defect sites in graphene accelerate corrosion due to the inert nature of graphene which promotes galvanic corrosion at the expense of the metal. The recent discovery of spontaneous dissolution of charged graphite intercalation compounds in aprotic solvents enables defect free graphene platelets to be employed for anti-corrosion applications. These ‘inks’ of defect-free charged graphene platelets in solution can be coated onto a metallic surfaces via electroplating to form a homogeneous barrier layer. In this paper, initial data showing homogeneous coatings of graphene barrier layers on steel coupons via electroplating will be presented. This easily scalable technique also provides a controllable method for applying different barrier thicknesses from ultra thin layers to thick opaque coatings making it useful for a wide range of applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anti-corrosion" title="anti-corrosion">anti-corrosion</a>, <a href="https://publications.waset.org/abstracts/search?q=defect-free" title=" defect-free"> defect-free</a>, <a href="https://publications.waset.org/abstracts/search?q=electroplating" title=" electroplating"> electroplating</a>, <a href="https://publications.waset.org/abstracts/search?q=graphene" title=" graphene"> graphene</a> </p> <a href="https://publications.waset.org/abstracts/109506/homogeneous-anti-corrosion-coating-of-spontaneously-dissolved-defect-free-graphene" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/109506.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">131</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">51</span> Mechanical Properties of Graphene Nano-Platelets Coated Carbon-Fiber Composites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alok%20Srivastava">Alok Srivastava</a>, <a href="https://publications.waset.org/abstracts/search?q=Vidit%20Gupta"> Vidit Gupta</a>, <a href="https://publications.waset.org/abstracts/search?q=Aparna%20Singh"> Aparna Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=Chandra%20Sekher%20Yerramalli"> Chandra Sekher Yerramalli</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Carbon-fiber epoxy composites show extremely high modulus and strength in the uniaxial direction. However, they are prone to fail under low load in transverse direction due to the weak nature of the interface between the carbon-fiber and epoxy. In the current study, we have coated graphene nano-platelets (GNPs) on the carbon-fibers in an attempt to strengthen the interface/interphase between the fiber and the matrix. Vacuum Assisted Resin Transfer Moulding (VARTM) has been used to make the laminates of eight cross-woven fabrics. Tensile, flexural and fracture toughness tests have been performed on pristine carbon-fiber composite (P-CF), GNP coated carbon-fiber composite (GNP-CF) and functionalized-GNP coated carbon-fiber composite (F-GNP-CF). The tensile strength and flexural strength values are pretty similar for P-CF and GNP-CF. The micro-structural examination of the GNP coated carbon-fibers, as well as the fracture surfaces, have been carried out using scanning electron microscopy (SEM). The micrographs reveal the deposition of GNPs onto the carbon fibers in transverse and longitudinal direction. Fracture surfaces show the debonding and pull outs of the carbon fibers in P-CF and GNP-CF samples. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon%20fiber" title="carbon fiber">carbon fiber</a>, <a href="https://publications.waset.org/abstracts/search?q=graphene%20nanoplatelets" title=" graphene nanoplatelets"> graphene nanoplatelets</a>, <a href="https://publications.waset.org/abstracts/search?q=strength" title=" strength"> strength</a>, <a href="https://publications.waset.org/abstracts/search?q=VARTM" title=" VARTM"> VARTM</a>, <a href="https://publications.waset.org/abstracts/search?q=Vacuum%20Assisted%20Resin%20Transfer%20Moulding" title=" Vacuum Assisted Resin Transfer Moulding"> Vacuum Assisted Resin Transfer Moulding</a> </p> <a href="https://publications.waset.org/abstracts/93687/mechanical-properties-of-graphene-nano-platelets-coated-carbon-fiber-composites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/93687.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">148</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">50</span> Spexin and Fetuin A in Morbid Obese Children</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mustafa%20M.%20Donma">Mustafa M. Donma</a>, <a href="https://publications.waset.org/abstracts/search?q=Orkide%20Donma"> Orkide Donma</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Spexin, expressed in central nervous system, has attracted much interest in feeding behavior, obesity, diabetes, energy metabolism and cardiovascular functions. Fetuin A is known as negative acute phase reactant synthesized in the liver. So far, it has become a major concern of many studies in numerous clinical states. The relationship between the concentrations of spexin as well as fetuin A and the risk for cardiovascular diseases (CVDs) were also investigated. Eosinophils, suggested to be associated with the development of CVDs, are introduced as early indicators of cardiometabolic complications. Patients with elevated platelet count, associated with hypercoagulable state in the body, are also more liable to CVDs. In this study, the aim is to examine the profiles of spexin and fetuin A concomitant with the course of variations detected in eosinophil as well as platelet counts in morbid obese children. Thirty-four children with normal-body mass index (N-BMI) and fifty-one morbid obese (MO) children participated in the study. Written-informed consent forms were obtained prior to the study. Institutional ethics committee approved the study protocol. Age- and sex-adjusted BMI percentile tables prepared by World Health Organization were used to classify healthy and obese children. Mean age ± SEM of the children were 9.3 ± 0.6 years and 10.7 ± 0.5 years in N-BMI and MO groups, respectively. Anthropometric measurements of the children were taken. Body mass index values were calculated from weight and height values. Blood samples were obtained after an overnight fasting. Routine hematologic and biochemical tests were performed. Within this context, fasting blood glucose (FBG), insulin (INS), triglycerides (TRG), high density lipoprotein-cholesterol (HDL-C) concentrations were measured. Homeostatic model assessment for insulin resistance (HOMA-IR) values were calculated. Spexin and fetuin A levels were determined by enzyme-linked immunosorbent assay. Data were evaluated from the statistical point of view. Statistically significant differences were found between groups in terms of BMI, fat mass index, INS, HOMA-IR and HDL-C. In MO group, all parameters increased as HDL-C decreased. Elevated concentrations in MO group were detected in eosinophils (p<0.05) and platelets (p>0.05). Fetuin A levels decreased in MO group (p>0.05). However, decrease was statistically significant in spexin levels for this group (p<0.05). In conclusion, these results have suggested that increases in eosinophils and platelets exhibit behavior as cardiovascular risk factors. Decreased fetuin A behaved as a risk factor suitable to increased risk for cardiovascular problems associated with the severity of obesity. Along with increased eosinophils, increased platelets and decreased fetuin A, decreased spexin was the parameter, which reflects best its possible participation in the early development of CVD risk in MO children. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cardiovascular%20diseases" title="cardiovascular diseases ">cardiovascular diseases </a>, <a href="https://publications.waset.org/abstracts/search?q=eosinophils" title=" eosinophils "> eosinophils </a>, <a href="https://publications.waset.org/abstracts/search?q=fetuin%20A" title=" fetuin A "> fetuin A </a>, <a href="https://publications.waset.org/abstracts/search?q=pediatric%20morbid%20obesity" title=" pediatric morbid obesity "> pediatric morbid obesity </a>, <a href="https://publications.waset.org/abstracts/search?q=platelets" title=" platelets "> platelets </a>, <a href="https://publications.waset.org/abstracts/search?q=spexin" title=" spexin"> spexin</a> </p> <a href="https://publications.waset.org/abstracts/138900/spexin-and-fetuin-a-in-morbid-obese-children" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/138900.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">193</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">49</span> Upregulation of CD40/CD40L System in Rheumatic Mitral Stenosis With or Without Atrial Fibrillation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Azzam%20H.">Azzam H.</a>, <a href="https://publications.waset.org/abstracts/search?q=Abousamra%20N.%20K."> Abousamra N. K.</a>, <a href="https://publications.waset.org/abstracts/search?q=Wafa%20A.%20A."> Wafa A. A.</a>, <a href="https://publications.waset.org/abstracts/search?q=Hafez%20M.%20M."> Hafez M. M.</a>, <a href="https://publications.waset.org/abstracts/search?q=El-Gilany%20A.%20H."> El-Gilany A. H.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Platelet activation occurs in peripheral blood of patients with rheumatic mitral stenosis (MS) and atrial fibrillation (AF) and could be related to abnormal thrombogenesis. The CD40/CD40 ligand (CD40L) which reflects platelet activation, mediate a central role in thrombotic diseases. However, the role of CD40/CD40L system in rheumatic MS with or without AF remains unclear. Expressions of CD40 on monocytes and CD40L on platelets were determined by whole blood flow cytometry and serum levels of soluble CD40L were measured by enzyme-linked immunosorbent assay in group 1 (19 patients with MS) and group 2 (20 patients with MS and AF) compared to group 3 (10 controls). Patients with groups 1 and 2 had a significant increase in expression of CD40 on monocytes (P1 and P2 = 0.000) and serum levels of sCD40L (P1 = 0.014 and P2 = 0.033, respectively), but nonsignificant increase in expression of CD40L on platelets (P1 = 0.109 and P2 = 0.060, respectively) as compared to controls. There were no significant difference in all the parameters in group 1 compared to group 2. Correlation analysis demonstrated that there was a significant direct relationship between the severity of MS and serum levels of sCD40L (r = -0.469, p = 0.043). In conclusion, rheumatic MS patients with or without AF had upregulation of the CD40/CD40L system as well as elevated sCD40L levels. The levels of sCD40L had a significantly direct relationship with the severity of MS and it was the stenotic mitral valve, not AF, that had a significant impact on platelet activation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CD40" title="CD40">CD40</a>, <a href="https://publications.waset.org/abstracts/search?q=CD40L" title=" CD40L"> CD40L</a>, <a href="https://publications.waset.org/abstracts/search?q=mitral%20stenosis" title=" mitral stenosis"> mitral stenosis</a>, <a href="https://publications.waset.org/abstracts/search?q=atrial%20fibrillation" title=" atrial fibrillation"> atrial fibrillation</a> </p> <a href="https://publications.waset.org/abstracts/158032/upregulation-of-cd40cd40l-system-in-rheumatic-mitral-stenosis-with-or-without-atrial-fibrillation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/158032.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">94</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">48</span> Antiplatelet Activity of Nitrated Fatty Acids from Different Food Sources</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lyanne%20Rodriguez">Lyanne Rodriguez</a>, <a href="https://publications.waset.org/abstracts/search?q=Eduardo%20Fuentes"> Eduardo Fuentes</a>, <a href="https://publications.waset.org/abstracts/search?q=Andr%C3%A9s%20Trostchansky"> Andrés Trostchansky</a>, <a href="https://publications.waset.org/abstracts/search?q=Felipe%20Lagos"> Felipe Lagos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nutrition is a crucial strategy to combat cardiovascular diseases (CVD), which remain a leading global cause of mortality. Various studies have demonstrated the antiplatelet properties of commonly consumed fruit and vegetable extracts, particularly tomato and bean extracts. Previous research has indicated potent antiplatelet activity in tomato and common bean pomace, attributed to their high fatty acid content (>30%). Notably, fatty acids can undergo nitration during digestion, catalyzed by the reaction of nitrogen dioxide with unsaturated fatty acids. Understanding the mechanisms underlying the formation of nitrated fatty acids from dietary sources is essential to comprehending their antiplatelet action. This research aims to evaluate the formation of nitrated fatty acids (NO₂-FA) from different foods (tomato pulp and common beans). Specifically, tomato pomace and nitrated bean extracts exhibited concentration-dependent antiplatelet effects when platelets were stimulated with TRAP-6 and collagen (1.18±0.04 and 0.7±0.02 mg/mL, respectively). Furthermore, the antiplatelet potential was associated with the modulation of platelet activation markers, as both nitrated extracts suppressed p-selectin expression, CD63 secretion, and fibrinogen modulation. Additionally, a synergistic effect was observed between both nitrated extracts. Our results suggest that NO₂-FA obtained from different food sources has a promising antiplatelet effect for preventing and treating blood clots. This study adds value to these foods in terms of reducing cardiovascular events. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=foods" title="foods">foods</a>, <a href="https://publications.waset.org/abstracts/search?q=nitrated%20fatty%20acids" title=" nitrated fatty acids"> nitrated fatty acids</a>, <a href="https://publications.waset.org/abstracts/search?q=nitration" title=" nitration"> nitration</a>, <a href="https://publications.waset.org/abstracts/search?q=platelets" title=" platelets"> platelets</a> </p> <a href="https://publications.waset.org/abstracts/186796/antiplatelet-activity-of-nitrated-fatty-acids-from-different-food-sources" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/186796.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">41</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">47</span> Clay Hydrogel Nanocomposite for Controlled Small Molecule Release </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xiaolin%20Li">Xiaolin Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Terence%20Turney"> Terence Turney</a>, <a href="https://publications.waset.org/abstracts/search?q=John%20Forsythe"> John Forsythe</a>, <a href="https://publications.waset.org/abstracts/search?q=Bryce%20Feltis"> Bryce Feltis</a>, <a href="https://publications.waset.org/abstracts/search?q=Paul%20Wright"> Paul Wright</a>, <a href="https://publications.waset.org/abstracts/search?q=Vinh%20Truong"> Vinh Truong</a>, <a href="https://publications.waset.org/abstracts/search?q=Will%20%20Gates"> Will Gates</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Clay-hydrogel nanocomposites have attracted great attention recently, mainly because of their enhanced mechanical properties and ease of fabrication. Moreover, the unique platelet structure of clay nanoparticles enables the incorporation of bioactive molecules, such as proteins or drugs, through ion exchange, adsorption or intercalation. This study seeks to improve the mechanical and rheological properties of a novel hydrogel system, copolymerized from a tetrapodal polyethylene glycol (PEG) thiol and a linear, triblock PEG-PPG-PEG (PPG: polypropylene glycol) α,ω-bispropynoate polymer, with the simultaneous incorporation of various amounts of Na-saturated, montmorillonite clay (MMT) platelets (av. lateral dimension = 200 nm), to form a bioactive three-dimensional network. Although the parent hydrogel has controlled swelling ability and its PEG groups have good affinity for the clay platelets, it suffers from poor mechanical stability and is currently unsuitable for potential applications. Nanocomposite hydrogels containing 4wt% MMT showed a twelve-fold enhancement in compressive strength, reaching 0.75MPa, and also a three-fold acceleration in gelation time, when compared with the parent hydrogel. Interestingly, clay nanoplatelet incorporation into the hydrogel slowed down the rate of its dehydration in air. Preliminary results showed that protein binding by the MMT varied with the nature of the protein, as horseradish peroxidase (HRP) was more strongly bound than bovine serum albumin. The HRP was no longer active when bound, presumably as a result of extensive structural refolding. Further work is being undertaken to assess protein binding behaviour within the nanocomposite hydrogel for potential diabetic wound healing applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hydrogel" title="hydrogel">hydrogel</a>, <a href="https://publications.waset.org/abstracts/search?q=nanocomposite" title=" nanocomposite"> nanocomposite</a>, <a href="https://publications.waset.org/abstracts/search?q=small%20molecule" title=" small molecule"> small molecule</a>, <a href="https://publications.waset.org/abstracts/search?q=wound%20healing" title=" wound healing"> wound healing</a> </p> <a href="https://publications.waset.org/abstracts/67488/clay-hydrogel-nanocomposite-for-controlled-small-molecule-release" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67488.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">269</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">46</span> Study on the Morphology and Dynamic Mechanical and Thermal Properties of HIPS/Graphene Nanocomposites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amirhosein%20Rostampour">Amirhosein Rostampour</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehdi%20Sharif"> Mehdi Sharif</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this article, a series of high impact polystyrene/graphene (HIPS/Gr) nanocomposites were prepared by solution mixing method and their morphology and dynamic mechanical properties were investigated as a function of graphene content. SEM images and X-Ray diffraction data confirm that the graphene platelets are well dispersed in HIPS matrix for the nanocomposites with Gr contents up to 5.0 wt%. Mechanical properties analysis demonstrates that yielding strength and initial modulus of HIPS/Gr nanocomposites are highly improved with the increment of Gr content compared to pure HIPS. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanocomposite" title="nanocomposite">nanocomposite</a>, <a href="https://publications.waset.org/abstracts/search?q=graphene" title=" graphene"> graphene</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic%20mechanical%20properties" title=" dynamic mechanical properties"> dynamic mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=morphology" title=" morphology"> morphology</a> </p> <a href="https://publications.waset.org/abstracts/29222/study-on-the-morphology-and-dynamic-mechanical-and-thermal-properties-of-hipsgraphene-nanocomposites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29222.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">536</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">45</span> Evaluation of Human Amnion Hemocompatibility as a Substitute for Vessels</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ghasem%20Yazdanpanah">Ghasem Yazdanpanah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mona%20Kakavand"> Mona Kakavand</a>, <a href="https://publications.waset.org/abstracts/search?q=Hassan%20Niknejad"> Hassan Niknejad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objectives: An important issue in tissue engineering (TE) is hemocompatibility. The current engineered vessels are seriously at risk of thrombus formation and stenosis. Amnion (AM) is the innermost layer of fetal membranes that consists of epithelial and mesenchymal sides. It has the advantages of low immunogenicity, anti-inflammatory and anti-bacterial properties as well as good mechanical properties. We recently introduced the amnion as a natural biomaterial for tissue engineering. In this study, we have evaluated hemocompatibility of amnion as potential biomaterial for tissue engineering. Materials and Methods: Amnions were derived from placentas of elective caesarean deliveries which were in the gestational ages 36 to 38 weeks. Extracted amnions were washed by cold PBS to remove blood remnants. Blood samples were obtained from healthy adult volunteers who had not previously taken anti-coagulants. The blood samples were maintained in sterile tubes containing sodium citrate. Plasma or platelet rich plasma (PRP) were collected by blood sample centrifuging at 600 g for 10 min. Hemocompatibility of the AM samples (n=7) were evaluated by measuring of activated partial thromboplastin time (aPTT), prothrombin time (PT), hemolysis, and platelet aggregation tests. P-selectin was also assessed by ELISA. Both epithelial and mesenchymal sides of amnion were evaluated. Glass slide and expanded polytetrafluoroethylene (ePTFE) samples were defined as control. Results: In comparison with glass as control (13.3 ± 0.7 s), prothrombin time was increased significantly while each side of amnion was in contact with plasma (p<0.05). There was no significant difference in PT between epithelial and mesenchymal surfaces (17.4 ± 0.7 s vs. 15.8 ± 0.7 s, respectively). However, aPPT was not significantly changed after incubation of plasma with amnion epithelial and mesenchymal surfaces or glass (28.61 ± 1.39 s, 31.4 ± 2.66 s, glass, 30.76 ± 2.53 s, respectively, p>0.05). Amnion surfaces, ePTFE and glass samples have less hemolysis induction than water considerably (p<0.001), in which no differences were detected. Platelet aggregation measurements showed that platelets were less stimulated by the amnion epithelial and mesenchymal sides, in comparison with ePTFE and glass. In addition, reduction in amount of p-selectin, as platelet activation factor, after incubation of samples with PRP indicated that amnion has less stimulatory effects on platelets than ePTFE and glass. Conclusion: Amnion as a natural biomaterial has the potential to be used in tissue engineering. Our results suggest that amnion has appropriate hemocompatibility to be employed as a vascular substitute. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=amnion" title="amnion">amnion</a>, <a href="https://publications.waset.org/abstracts/search?q=hemocompatibility" title=" hemocompatibility"> hemocompatibility</a>, <a href="https://publications.waset.org/abstracts/search?q=tissue%20engineering" title=" tissue engineering"> tissue engineering</a>, <a href="https://publications.waset.org/abstracts/search?q=biomaterial" title=" biomaterial"> biomaterial</a> </p> <a href="https://publications.waset.org/abstracts/11352/evaluation-of-human-amnion-hemocompatibility-as-a-substitute-for-vessels" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11352.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">395</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">44</span> Utilization of Nanoclay to Reinforce Flax Fabric-Geopolymer Composites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20S.%20Assaedi">H. S. Assaedi</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20U.%20A.%20Shaikh"> F. U. A. Shaikh</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20M.%20Low"> I. M. Low</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Geopolymer composites reinforced with flax fabrics and nano-clay are fabricated and studied for physical and mechanical properties using X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscope (SEM). Nanoclay platelets at a weight of 1.0%, 2.0%, and 3.0% were added to geopolymer pastes. Nanoclay at 2.0 wt.% was found to improve density and decrease porosity while improving flexural strength and post-peak toughness. A microstructural analysis indicated that nanoclay behaves as filler and as an activator supporting geopolymeric reaction while producing a higher content geopolymer gel improving the microstructure of binders. The process enhances adhesion between the geopolymer matrix and flax fibres. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=flax%20fibres" title="flax fibres">flax fibres</a>, <a href="https://publications.waset.org/abstracts/search?q=geopolymer" title=" geopolymer"> geopolymer</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=nanoclay" title=" nanoclay"> nanoclay</a> </p> <a href="https://publications.waset.org/abstracts/40080/utilization-of-nanoclay-to-reinforce-flax-fabric-geopolymer-composites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40080.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">245</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">43</span> Morphological and Molecular Evaluation of Dengue Virus Serotype 3 Infection in BALB/c Mice Lungs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gabriela%20C.%20Caldas">Gabriela C. Caldas</a>, <a href="https://publications.waset.org/abstracts/search?q=Fernanda%20C.%20Jacome"> Fernanda C. Jacome</a>, <a href="https://publications.waset.org/abstracts/search?q=Arthur%20da%20C.%20Rasinhas"> Arthur da C. Rasinhas</a>, <a href="https://publications.waset.org/abstracts/search?q=Ortrud%20M.%20Barth"> Ortrud M. Barth</a>, <a href="https://publications.waset.org/abstracts/search?q=Flavia%20B.%20dos%20Santos"> Flavia B. dos Santos</a>, <a href="https://publications.waset.org/abstracts/search?q=Priscila%20C.%20G.%20Nunes"> Priscila C. G. Nunes</a>, <a href="https://publications.waset.org/abstracts/search?q=Yuli%20R.%20M.%20de%20Souza"> Yuli R. M. de Souza</a>, <a href="https://publications.waset.org/abstracts/search?q=Pedro%20Paulo%20de%20A.%20Manso"> Pedro Paulo de A. Manso</a>, <a href="https://publications.waset.org/abstracts/search?q=Marcelo%20P.%20Machado"> Marcelo P. Machado</a>, <a href="https://publications.waset.org/abstracts/search?q=Debora%20F.%20Barreto-Vieira"> Debora F. Barreto-Vieira</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The establishment of animal models for studies of DENV infections has been challenging, since circulating epidemic viruses do not naturally infect nonhuman species. Such studies are of great relevance to the various areas of dengue research, including immunopathogenesis, drug development and vaccines. In this scenario, the main objective of this study is to verify possible morphological changes, as well as the presence of antigens and viral RNA in lung samples from BALB/c mice experimentally infected with an epidemic and non-neuroadapted DENV-3 strain. Male BALB/c mice, 2 months old, were inoculated with DENV-3 by intravenous route. After 72 hours of infection, the animals were euthanized and the lungs were collected. Part of the samples was processed by standard technique for analysis by light and transmission electronic microscopies and another part was processed for real-time PCR analysis. Morphological analyzes of lungs from uninfected mice showed preserved tissue areas. In mice infected with DENV-3, the analyzes revealed interalveolar septum thickening with presence of inflammatory infiltrate, foci of alveolar atelectasis and hyperventilation, bleeding foci in the interalveolar septum and bronchioles, peripheral capillary congestion, accumulation of fluid in the blood capillary, signs of interstitial cell necrosis presence of platelets and mononuclear inflammatory cells circulating in the capillaries and/or adhered to the endothelium. In addition, activation of endothelial cells, platelets, mononuclear inflammatory cell and neutrophil-type polymorphonuclear inflammatory cell evidenced by the emission of cytoplasmic membrane prolongation was observed. DEN-like particles were seen in the cytoplasm of endothelial cells. The viral genome was recovered from 3 in 12 lung samples. These results demonstrate that the BALB / c mouse represents a suitable model for the study of the histopathological changes induced by DENV infection in the lung, with tissue alterations similar to those observed in human cases of DEN. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=BALB%2Fc%20mice" title="BALB/c mice">BALB/c mice</a>, <a href="https://publications.waset.org/abstracts/search?q=dengue" title=" dengue"> dengue</a>, <a href="https://publications.waset.org/abstracts/search?q=histopathology" title=" histopathology"> histopathology</a>, <a href="https://publications.waset.org/abstracts/search?q=lung" title=" lung"> lung</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrastructure" title=" ultrastructure"> ultrastructure</a> </p> <a href="https://publications.waset.org/abstracts/98514/morphological-and-molecular-evaluation-of-dengue-virus-serotype-3-infection-in-balbc-mice-lungs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/98514.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">253</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=platelets&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=platelets&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=platelets&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" 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