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Journal of Research in Medical Sciences، جلد ۲۲، شماره ۸، صفحات ۰-۰
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عنوان انگلیسی Diverse pattern of gap junction beta?2 and gap junction beta?4 genes mutations and lack of contribution of DFNB21, DFNB24, DFNB29, and DFNB42 loci in autosomal recessive nonsyndromic hearing loss patients in Hormozgan, Iran
چکیده انگلیسی مقاله Background: We aimed to determine the contribution of four DFNB loci and mutation analysis of gap junction beta?2 ( GJB2) and GJB4 genes in autosomal recessive nonsyndromic hearing loss (ARNSHL) in South of Iran. Materials and Methods: A total of 36 large ARNSHL pedigrees with at least two a?ected subjects were enrolled in the current study. Te GJB2 and GJB4 genes mutations were screened using direct sequencing method. Te GJB2 and GJB4 negative families were analyzed for the linkage to DFNB21, DFNB24, DFNB29, and DFNB42 loci by genotyping the corresponding STR markers using polymerase chain reaction?PAGE method. Results: We found a homozygous nonsense mutation W77X and a homozygous missense mutation C169W in 5.55% of studied families in GJB2 and GJB4 genes, respectively. Five heterozygous mutations including V63G, A78T, and R127H in GJB2 gene, and R103C and R227W in GJB4 gene were detected. We identifed two novel variations V63G in GJB2 and R227W in GJB4 . In silico analysis predicted that both novel variations are deleterious mutations. We did not unveil any linkage between DFNB21, DFNB24, DFNB29, and DFNB42 loci and ARNSHL among studied families. Conclusion: Tis is the frst report of GJB2 and GJB4 mutations from Hormozgan population. According to the previous publications regarding GJB2 and GJB4 mutations, the distribution of the mutations is di?erent from other parts of Iran that should be considered in primary health?care programs. Further investigations are needed to evaluate the contribution of other loci in ARNSHL subjects in South of Iran.
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نویسندگان مقاله مسعود اکبرزاده لاله | masoud akbarzadeh laleh


مرضیه ناصری | marzieh naseri


علی اکبر پورصادق زنوزی | ali akbar poursadegh zonouzi


احمد پورصادق زنوزی | ahmad poursadegh zonouzi


مرجان مسعودی | marjan masoudi


نجمه آهنگری | najmeh ahangari


لیلا شمس | leila shams


عظیم نجاتی زاده | azim nejatizadeh


نشانی اینترنتی http://jrms.mui.ac.ir/index.php/jrms/article/view/10687
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article
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