نتایج جستجو برای: 35delg
تعداد نتایج: 148 فیلتر نتایج به سال:
زمینه و هدف: کاهش شنوایی، 1 نفر از هر 1000 تا 2000 کودک تازه متولد شده را تحت تاثیر قرار می دهد. بیش از 50% از این موارد را به عوامل ژنتیکی نسبت می دهند. کاهش شنوایی غیر سندرمی بیش از 70% از موارد ناشنوایی ارثی را شامل می شود که 85% از آن را وراثت جسمی مغلوب تشکیل می دهد. ژنهای مختلفی با این ناشنوایی در ارتباط هستند که جهش در ژن کانکسین 26(gjb2) واقع در جایگاه کروموزومی ناشنوایی غیرسندرمی با ور...
Autosomal recessive non-syndromic hearing loss is the most common form of inherited childhood deafness. Identification of the responsible gene in this type of hearing loss presents difficulties because of marked genetic heterogenicity and limited clinical presentation. A two-year-old girl was referred to our clinic because of congenital hearing loss. Family history showed that her brother and s...
Clinical application of mutation screening and its effect on the outcome of cochlear implantation is widely debated. We investigated the effect of mutations in GJB2 gene on the outcome of cochlear implantation in a population with a high rate of consanguineous marriage and autosomal recessive nonsyndromic hearing loss. Two hundred and one children with profound prelingual sensorineural hearing ...
objective: hearing loss is the most frequent neurosensory defect in human. mutations in gjb2 and gjb6 are responsible for 50% of autosomal recessive non-syndromic hearing loss (arnshl) cases. here we report on the frequencies of gjb2 and gjb6 mutations and three large deletions spanning the gjb6 gene including del (gjb6-d13s1830), del (gjb6-d13s1854) and a >920 kb deletion in patients affected ...
EDITOR—Existing published data cannot conclusively determine if the M34T allele of connexin-26 (GJB2) is a recessive allele causing hearing loss. The recent article by Houseman et al (J Med Genet 2001;38:20-5) “Genetic analysis of the connexin-26 M34T variant: identification of genotype M34T/ M34T segregating with mild-moderate nonsyndromic sensorineural hearing loss,” does not resolve this que...
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