نتایج جستجو برای: nonsyndromic deafness
تعداد نتایج: 9132 فیلتر نتایج به سال:
alpha-Tectorin is one of the major noncollagenous components of the mammalian tectorial membrane in the inner ear. We have mapped the gene encoding alpha-tectorin to mouse chromosome 9 and human chromosome 11 in a known region of conserved synteny. Human YAC clones containing alpha-tectorin have been identified, demonstrating physical linkage to the anonymous marker D11S925. This places alpha-t...
DFNB1 locus has been linked to a nonsyndromic “invisible disability” called congenital sensorineural hearing loss and deafness. Mutations of GJB2 and GJB6 genes are associated with deafness at the DFNB1 locus. The diagnosis of DFNB1 is made with molecular genetic testing. DNA-based testing can be used both prenatally and postnatally. Purpose: To get evidence for implementation of newborn hearin...
The present study aimed to investigate the molecular etiology of nonsyndromic hearing impairment (HI) in hearing impaired populations of Hui, Tibetan, and Tu ethnicities in northwest China. A total of 283 unrelated subjects with HI who attended special education schools in northwest China were enrolled in the present study. Single-nucleotide polymorphisms (SNPs) in three common deafness‑related...
Mutations in GJB2, which encodes Cx26, are one of the most common causes of inherited deafness in humans. More than 100 mutations have been identified scattered throughout the Cx26 protein, most of which cause nonsyndromic sensorineural deafness. In a subset of mutations, deafness is accompanied by hyperkeratotic skin disorders, which are typically severe and sometimes fatal. Many of these synd...
We aim to screen the mutations of 3 hearing loss (HL) genes (GJB2, SLC26A4, and 12S rRNA) in 71 cases with nonsyndromic hearing loss (NSHL) using microarray and SNPscan, and identify the roles of nonhotspot mutation of these genes in the screening of NSHL. Seventy-one cases with moderate or severe neurosensory deafness confirmed in our department from July 2014 to December 2015 including 25 Uyg...
Hearing loss is one of the most common sensorineural defects in humans. Autosomal-recessive nonsyndromic hearing loss (ARNSHL) is the most frequent form among inherited forms of deafness and accounts for greater than 70% of the cases. Due to extreme genetic heterogeneity of ARNSHL, many known loci have to be screened to find linkage to deafness genes or before proceeding to a genome wide analys...
Hearing impairment is the most common sensorineural deficit worldwide. Deafness has a major genetic component, and understanding how genetic variation impacts hearing needs to be extensively studied. The importance of this work is reflected in the review by Lufkin: “the sense of hearing is one of the most crucial senses endowed to a living organism and its loss can have many ramifications.” Thi...
CIB2, defective in isolated deafness, is key for auditory hair cell mechanotransduction and survival
Defects of CIB2, calcium- and integrin-binding protein 2, have been reported to cause isolated deafness, DFNB48 and Usher syndrome type-IJ, characterized by congenital profound deafness, balance defects and blindness. We report here two new nonsense mutations (pGln12* and pTyr110*) in CIB2 patients displaying nonsyndromic profound hearing loss, with no evidence of vestibular or retinal dysfunct...
Mutations in the human gene encoding connexin 26 (Cx26 or GJB2) cause either nonsyndromic deafness or syndromic deafness associated with skin diseases. That distinct clinical disorders can be caused by different mutations within the same gene suggests that different channel activities influence the ear and skin. Here we use three different expression systems to examine the functional characteri...
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