نتایج جستجو برای: syndromic deafness
تعداد نتایج: 13200 فیلتر نتایج به سال:
Mutation of the Gap Junction Beta 2 gene (GJB2) encoding connexin 26 (CX26) is the most frequent cause of hereditary deafness worldwide and accounts for up to 50% of non-syndromic sensorineural hearing loss cases in some populations. Therefore, cochlear CX26-gap junction plaque (GJP)-forming cells such as cochlear supporting cells are thought to be the most important therapeutic target for the ...
Deafness is the most common form of sensory impairment in humans and is frequently caused by single gene mutations. Interestingly, different mutations in a gene can cause syndromic and nonsyndromic forms of deafness, as well as progressive and age-related hearing loss. We provide here an explanation for the phenotypic variability associated with mutations in the cadherin 23 gene (CDH23). CDH23 ...
Hearing loss is one of the most prevalent human birth defects. Genetic factors contribute to the pathogenesis of deafness. It is estimated that one-third of deafness genes have already been identified. The current work is an attempt to find novel genes relevant to hearing loss using guilt-by-profiling and guilt-by-association bioinformatics analyses of approximately 80 known non-syndromic hered...
OBJECTIVE to determinate the role of heterozygosis of M34T mutation of GJB2 gene in non syndromic congenital deafness. METHODS retrospective study between March 2010 and June 2013. Molecular screening for 35delG and M34T mutations of the GJB2 gene was offered to all women undergoing to second trimester genetic amniocentesis. Patients were excluded from the study group if one of the following ...
while hearing loss has been considered to be a very heterogeneous disorder, mutations in gap junction beta 2 (gjb2) gene encoding connexin 26 (cx26) protein are the major cause of autosomal recessive and sporadic non-syndromic deafness in many populations. in this study, we have investigated the prevalence of the gjb2 gene mutations using nested pcr pre screening strategy and direct sequencing ...
The genetics of both syndromic (SHL) and non-syndromic hearing loss (NSHL) is characterized by a high degree of genetic heterogeneity. We analyzed whole exome sequencing data of 102 unrelated probands with apparently NSHL without a causative variant in known NSHL genes. We detected five causative variants in different SHL genes (SOX10, MITF, PTPN11, CHD7, and KMT2D) in five (4.9%) probands. Cli...
Prelingual non-syndromic (isolated) deafness is the most frequent hereditary sensory defect. In >80% of the cases, the mode of transmission is autosomal recessive. To date, 14 loci have been identified for the recessive forms (DFNB loci). For two of them, DFNB1 and DFNB2, the genes responsible have been characterized; they encode connexin 26 and myosin VIIA, respectively. In order to evaluate t...
Background & Objective: Deafness is the most common sensory disorder in humans which is highly heterogeneous. Among its various types, autosomal recessive non-syndromic hearing loss (ARNSHL) is responsible for 80% of pre-speech congenital cases of hearing loss. The purpose of this study was to investigate the genetic linkage of DFNB4 locus in hearing impaired families in Hormozgan. Method: Te...
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