نتایج جستجو برای: arnshl
تعداد نتایج: 92 فیلتر نتایج به سال:
BACKGROUND Non-syndromic hearing loss (NSHL) is the most common birth defect and occurs in approximately 1/1,000 newborns. NSHL is a heterogeneous trait and can arise due to both genetic and environmental factors. Mutations of the transmembrane channel-like 1 (TMC1) gene cause non-syndromic deafness in humans and mice. OBJECTIVES The aim of the present study was to investigate the association...
زمینه و هدف: ناشنوایی یک اختلال شایع حسی است. نزدیک به 360 میلیون ناشنوا در سراسر دنیا وجود دارد. بیش از 50% موارد ناشنوایی به دلیل فاکتورهای ژنتیکی است. حدود 70% موارد ارثی ناشنوایی، به دلیل اختلال شنوایی غیرسندرمی است که از این بین وراثت مغلوب اتوزومی مسئول 80% موارد است. ناشنوایی غیرسندرمی مغلوب اتوزومی بسیار هتروژن بوده و تاکنون بیش از 50 ژن برای آن شناخته شده است. در این مطالعه ما به بررس...
Background: Hearing impairment as a heterogeneous disorder is the most common sensory defect that occur 1 in 1000. Mutations in GJB2 (CX26) gene at DFNB1 locus on 13q12 are responsible for autosomal recessive non-syndromic hearing loss (ARNSHL) in many populations. This study investigates the GJB2 gene mutations in deaf patients refereed to the deaf center of Tabriz. Methods: In the present ...
despite the enormous heterogeneity of genetic hearing loss, mutations in the gjb2 (connexin 26) gene located on “dfnb1” locus (13q12) account for up to 50% of cases of autosomal recessive non-syndromic hearing loss (arnshl) in some populations. this study describes the analysis of 100 autosomal recessive and sporadic nonsyndromic hearing loss individuals from 79 families each having at least on...
the 35delg mutation in the connexin 26 gene (cx26), at the dnfb1 locus is the most common mutation in the patients with autosomal recessive non-syndromic hearing loss (arnshl). we have studied a total of 224 deaf cases from 189 families in two populations of iran (sistan va bluchestan and hormozgan provinces) by prescreening nested pcr, polyacrylamide gel electrophoresis and consequent direct s...
بررسی ژن های شایع عامل ناشنوایی اتوزوم مغلوب از طریق str های پیوسته به لوکوس های dfnb1, dfnb4, dfnb9
زمینه و هدف: ناشنوایی شایع ترین نقص حسی عصبی در انسان است. جهش در دو ژن gjb2 و gjb6، عامل 50 درصد موارد ناشنوایی غیر سندرومی اتوزوم مغلوب (arnshl) می باشد. ناشنوایی یک اختلال ناهمگن است که به دو دسته سندرومی (30%) و غیرسندرومی (70%) تقسیم می شود و تقریباً 80% ناشنوایی غیرسندرومی به صورت اتوزوم مغلوب است. باید توجه داشت که میزان ازدواج فامیلی در جمعیت ایران بسیار بالا است. هدف اصلی این مطالعه یاف...
Background and aims: Hearing loss (HL) happens due to the genetic or environmental causes or both. Risk factors include congenital infections and congenital deformities of auricle and ear duct. The present study was performed to briefly explain the genetics, molecular biology and epidemiology of HL in Middle East especially in Iran. Methods: An intense an...
introduction: hearing loss is the most common sensory neural defect in humans, affecting 1 in 1000 neonates, with over half of these cases predicted to be hereditary in nature. most hereditary hearing loss is inherited in a recessive fashion, accounting for approximately 80 % of non-syndromic hearing loss (nshl). mutations in gjb2 gene are major cause of inherited deafness in the european and a...
Since the initial report on hearing restoration by cochlear gene transfer in a mouse mutant defective for vesicular gluta-mate transporter-3 (VGLUT3-/-), a growing number of studies tackle similar objectives in the perspective of developing inner ear gene therapy in humans. This presentation will focus on our main approaches to inner ear gene therapy, including the prevention of noise-induced h...
conclusions more studies are needed to investigate the relationship between other parts of this gene with hearing loss in different populations through the country. more research could clarify the role of this gene and its relation with deafness and provide essential information for the prevention and management of auditory disorders caused by genetic factors in the iranian population. backgrou...
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