نتایج جستجو برای: 235delc

تعداد نتایج: 43  

2004
D P Kelsell

G ap junctions composed of connexins (Cx) are intercellular channels that provide a mechanism of synchronised cellular response facilitating the metabolic and electronic functions of the cell. At least 20 human Cx genes have been described, many of which harbour germline mutations that are associated with a variety of human diseases. Recessive mutations in the coding region of GJB2 encoding Cx2...

2014
Xiuhong Pang Yongchuan Chai Lianhua Sun Dongye Chen Ying Chen Zhihua Zhang Hao Wu Tao Yang

Dominant mutations in GJB2 may lead to various degrees of sensorineural hearing impairment and/or hyperproliferative epidermal disorders. So far studies of dominant GJB2 mutations were mostly limited to case reports of individual patients and families. In this study, we identified 7 families, 11 subjects with dominant GJB2 mutations by sequencing of GJB2 in 2168 Chinese Han probands with sensor...

Journal: :Clinical genetics 2015
Y Chen Y Cao H-B Li J Mao M-J Liu Y-H Liu B-J Wang D Jiang Q Zhu Y Ding W Wang H Li K W Choy

Genetic causes account for more than half of congenital hearing loss cases. The most frequent mutations found in non-syndromic hearing loss patients occur in GJB2 and SLC26A4. Mitochondrial genome mutations are also prevalent. However, the frequency of common hearing loss mutations in the Chinese population has not yet been well estimated. Here, we implemented the SNaPshot genotyping method to ...

Journal: :Molecular medicine reports 2014
Hua Jiang Jia Chen Xin-Ji Shan Ying Li Jian-Guo He Bei-Bei Yang

The frequency and distribution of genetic mutations that cause deafness differ significantly according to ethnic group and region. Zhejiang is a province in the southeast of China, with an exceptional racial composition of the population caused by mass migration in ancient China. The purpose of the present study was to investigate the prevalence and spectrum of gap junction‑β2 (GJB2), solute ca...

2012
Joong-Wook Shin Seung-Chul Lee Ho-Ki Lee Hong-Joon Park

OBJECTIVES Genetic hearing loss is highly heterogeneous and more than 100 genes are predicted to cause this disorder in humans. In spite of this large genetic heterogeneity, mutations in SLC26A4 and GJB2 genes are primarily responsible for the major etiologies of genetic hearing loss among Koreans. The purpose of this study is to investigate the genetic cause of deafness in Korean cochlear impl...

2015
Jing Zheng Zhengbiao Ying Zhaoyang Cai Dongmei Sun Zheyun He Yinglong Gao Ting Zhang Yi Zhu Ye Chen Min-Xin Guan Klaus Brusgaard

Mutations in Gap Junction Beta 2 (GJB2) have been reported to be a major cause of non-syndromic hearing loss in many populations worldwide. The spectrums and frequencies of GJB2 variants vary substantially among different ethnic groups, and the genotypes among these populations remain poorly understood. In the present study, we carried out a systematic and extended mutational screening of GJB2 ...

Journal: :iranian journal of public health 0
m hashemzadeh chaleshtori dd farhud r taylor v hadavi ma patton ar afzal

mutations in the gjb2 gene at the dfnb1 locus on chromosome 13q12 are associated with autosomal recessive non syndromic hearing loss (arnshl) in many populations. a single mutation, at position 35 (35delg) accounts for approximately 30-63% of mutations in white populations with a carrier frequency of 1.5-2.5% in most european, north american and mediterranean populations. in this study we have ...

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