نتایج جستجو برای: ژن hla
تعداد نتایج: 55698 فیلتر نتایج به سال:
پذیرنده های شبه ایمونوگلبولینی سلول کشنده (kir) یک خانواده تازه کشف شده از پذیرنده های فعال کنندگی و مهاری است که عملکرد سلول کشنده طبیعی (nk) را کنترل می کند. kir به عنوان یک خانواده متنوع از پذیرنده هایی است که به سرعت به وسیله دوپلیکاسیون ژنی و وقایع نوترکیبی تکامل یافته است. در ابتدا این یافته ها برای یک خانواده ژنی درگیر در پاسخ ایمنی ذاتی غیر منتظره بود. مولکول های آنتی ژن لکوسیت انسان (h...
Background: Human leukocyte antigen (HLA)-G is a nonclassical HLA class I molecule with modulatory effects on NK and T cells. Because HLA-G expression is frequently detected in different solid tumors, it may be involved in tumor immune evasion. Objective: This study was designed to elucidate the prognostic value of HLA-G in hepatocellular carcinoma (HCC) and pancreatic adenocarcinoma (PADC). Th...
Objective(s): The population in Iran is a genetic admixture of the ancestral Aryan and other populations neighboring Iran. Different ethnic groups in Iran show wide regional distributions for many human leukocyte antigen (HLA) alleles. Therefore, it is necessary and sensible to study the differences in HLA allele distribution in different area. We studied the HLA class I and II allele frequenci...
Aim.To study the immunogenetic prerequisites of idiopathic recurrent spontaneous pregnancy losses in humans allo- and autoimmune genesis. Methods. PCR-SSP (polymerase chain reaction with sequence-specific primers). Results. A comprehensive analysis distribution frequency allelic variants HLA-DRB1, HLA-DQA1, HLA-DQB1 genes testifies to an increased risk a total homology 50 % or more couples pres...
Background and purpose: Major histocompatibility antigens are the most polymorphic components of the immune system. The purpose of this study was to determine the frequency of human leukocyte antigens (HLA) in a population in Mazandaran province, Iran. Materials and methods: In a cross sectional study, peripheral blood samples were obtained from 550 people in Immunogenetics Research Center af...
Background: The HLA class I molecules serve as ligands for both T cell receptors and killer cell immunoglobulin-like receptors (KIRs). Objective: We investigated the HLAC and HLA-Bw4 alleles as well as KIRs expression on CD56 positive lymphocytes to evaluate whether these genes and molecules could influence Ankylosing spondylitis (AS) susceptibility, alone or in combination. Methods: We typed 4...
Background: Graves’ disease (GD), a highly rampant autoimmune disorder of the thyroid gland, is responsible for 60-80% of the clinical cases of hyperthyroidism. Over the past decades, genetic association studies have identified several GD susceptibility loci in CTLA-4, TSHR and major histocompatibility complex regions. The information on the association between the human leukocyte antigens (HLA...
Objective: This study aimed to investigate the association between HLA alleles and visceral leishmaniasis (VL) in a sample of Iraqi patients. Methods: A total of 30 patients were studied, in addition to 20 age, gender and ethnicity matched controls. All subjects were genotyped by polymerase chain reaction-sequence specific primers (PCR-SSP) method. Results: For HLA-class I region (A and B loci)...
Background: There are several evidences that genetic factors besides environmental triggers have important role in initiating the rheumatoid arthritis (RA). The aim of this study was to investigate the association of rheumatoid arthritis with different subtypes of HLA DR4 in Iranian patients. Methods: In an un-matched case control study, 110 rheumatoid arthritis patients (case) and 56 knee ost...
� زمینه و هدف : بیماری سلیاک بیماری گوارشی است که عوامل ژنتیکی در بروز آن دخیل می&rlmباشند. مطالعه حاضر با هدف تعیین HLA DQ2 و HLADQ8 در بیماران با سرولوژی مثبت سلیاک تشخیص داده شده در بین بیماران مبتلا به سندرم روده تحریک پذیر انجام گرفت. � روش کار: این مطالعه توصیفی تحلیلی مقطعی بر روی 105 بیمار مبتلا به سندرم روده تحریک پذیر مراجعه کننده به درمانگاه گوارش مرکز آموزشی درمانی امام خمینی اردبیل...
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