نتایج جستجو برای: itpa
تعداد نتایج: 206 فیلتر نتایج به سال:
Inosine triphosphatase (ITPase) is one of the enzymes involved in thiopurine metabolism. Polymorphisms in the ITPA gene, resulting in a decreased activity of ITPase, are associated with adverse drug reactions during thiopurine therapy. Measuring ITPase activity is therefore of utmost importance. We compared measurement of ITPase activity in fresh erythrocyte lysates and eluates of dried blood s...
Azathioprine (AZA) is frequently used in patients with inflammatory bowel disease (IBD). However, toxic adverse reactions frequently develop and limit the clinical benefits. Currently, the precise mechanisms underlying thiopurine-related toxicity are not well understood. To investigate the relationship between the extent of thiopurine metabolism and adverse reactions in Japanese IBD patients, w...
هدف: یکی از مهم ترین انواع آسیب های سلولی، اکسیداتیو دآمیناسیون dna و نوکلئوتیدهای آزاد در مخزن نوکلئوتیدی سلول است. مشارکت نوکلئوتیدهای دآمینه غیرعادی (itp، ditp، xtp) در ساختار ژنوم می تواند فراوانی جهش های جابه جایی بازها را افزایش دهد. پیشنهاد شده است که انباشت این نوکلئوتیدها می تواند منجر به ناپایداری ژنتیکی شود که زمینه ساز انواع بیماری ها و سرطان ها می شود. آنزیم itpase کد شده توسط ژن i...
با وجود تلاش های بسیاری که در زمینه کشف مکانیسم های مولکولی و سلولی دخیل در سرطان صورت گرفته است، همچنان برخی از موارد حل نشده باقی مانده است. از جمله این مسایل تولید نسل جدیدی از عوامل درمانی موثر و ایمن است که به طور اختصاصی تغییرات ایجاد شده در سلول های سرطانی را هدف قرار دهد. در این رساله، سنتز نوعی نانوحامل دارویی برای درمان سرطان سینه از طریق ژن درمانی به صورت هدفمند، پیشنهاد شده است. برا...
BACKGROUND It has been found that ITPase deficiency is caused by ITPA gene polymorphisms. It was observed that ITPA polymorphisms have impact on hematological changes, including hemoglobin (Hb)-decline during treatment of chronic hepatitis C (CHC) patients with pegylated-interferon (PEG-IFN) plus ribavirin (RBV). OBJECTIVES This study aimed to assess the effect of ITPA and C20orf194 polymorph...
Disruption characterization and database development and analysis activities conducted for ITER under the aegis of the International Tokamak Physics Activity (ITPA) Topical Group on MHD, Control and Disruption are described. Accomplishments during 2005-2006 include: (1) formation of an International Disruption Database (IDDB) Working Group, (2) implementation of an MDSplus-based IDDB infrastruc...
Genetic factors can influence the outcome of antiviral therapy in chronic hepatitis C (HCV). We evaluated the role of interleukin-28B single nucleotide polymorphisms (SNPs) and inosine triphosphatase (ITPA) gene variants in HCV cirrhosis treated with Peg-Interferon and ribavirin. A prospective cohort of 233 patients with compensated cirrhosis received 1-1.5 μg/kg/week of Peg-Interferon alpha-2b...
Hematologic abnormalities during current therapy with pegylated interferon and ribavirin (PEG-IFN/RBV) for chronic hepatitis C (CHC) often necessitate dose reduction and premature withdrawal from therapy. The aim of this study was to identify host factors associated with IFN-induced thrombocytopenia by genome-wide association study (GWAS). In the GWAS stage using 900K single-nucleotide polymorp...
UNLABELLED Polymorphisms of the inosine triphosphatase (ITPA) gene influence anemia during pegylated interferon (PEG-IFN) and ribavirin (RBV) therapy, but their effects during triple therapy with PEG-IFN, RBV, and telaprevir are not known. Triple therapy for 12 weeks, followed by PEG-IFN and RBV for 12 weeks, was given to 49 patients with RBV-sensitive (CC at rs1127354) and 12 with RBV-resistan...
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