Mutations in the gene for connexin 26 (GJB2) that cause hearing loss have a dominant negative effect on connexin 30
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چکیده
منابع مشابه
Mutations in the gene for connexin 26 (GJB2) that cause hearing loss have a dominant negative effect on connexin 30.
Mutations in the gene (GJB2) encoding connexin 26 (cx26) have been linked to sensorineural hearing loss either alone or as part of a syndrome. Here we compare the properties of four cx26 mutants derived from point mutations associated with dominantly inherited hearing loss, either non-syndromic (W44S, R75W) or with various skin disorders (G59A, D66H, R75W). Since cx26 and cx30 are co-localized ...
متن کاملEvaluation of electrocardiographic parameters in patients with hearing loss genotyped for the connexin 26 gene (GJB2) mutations.
INTRODUCTION Several studies have associated congenital sensorineural hearing loss in children with prolongation of the cardiac parameter QTc. The cause of this association is unknown. At the same time, mutations in GJB2, which encodes connexin 26, are the most common cause of congenital hearing impairment. OBJECTIVE To compare electrocardiographic parameters (PR interval, QRS complex, and QT...
متن کاملA common founder for the 35delG GJB2 gene mutation in connexin 26 hearing impairment.
Fifty to eighty percent of autosomal recessive congenital severe to profound hearing impairment result from mutations in a single gene, GJB2, that encodes the protein connexin 26. One mutation of this gene, the 35delG allele, is particularly common in white populations. We report evidence that the high frequency of this allelic variant is the result of a founder effect rather than a mutational ...
متن کاملPrevalence of GJB2 (connexin-26) and GJB6 (connexin-30) mutations in a cohort of 300 Brazilian hearing-impaired individuals: implications for diagnosis and genetic counseling.
OBJECTIVE Hereditary nonsyndromic deafness is an autosomal recessive condition in about 80% of cases, and point mutations in the GJB2 gene (connexin 26) and two deletions in the GJB6 gene (connexin 30), del(GJB6-D13S1830) and del(GJB6-D13S1854), are reported to account for 50% of recessive deafness. Aiming at establishing the frequencies of GJB2 mutations and GJB6 deletions in the Brazilian pop...
متن کاملMutations of the Connexin 26 gene in families with non-syndromic hearing loss.
Autosomal recessive non-syndromic hearing impairment (ARNSHI) is caused by mutations in the gap junction gene GJB2 (Connexin 26; Cx26) in numerous human populations. The aim of this study was to determine the frequency of six GJB2 mutations in 50 Syrian families with congenital deafness and in 180 controls. PCR-RFLP was used to detect the 35delG, 167delT, M34T, W24X, W77R and E47X mutations, an...
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ژورنال
عنوان ژورنال: Human Molecular Genetics
سال: 2003
ISSN: 1460-2083
DOI: 10.1093/hmg/ddg076