Autosomal recessive and sporadic non syndromic hearing loss and the incidence of Cx26 mutations in a province of Iran

Hashemzadeh-Chaleshtori, Morteza. and Montazer Zohouri, Mostafa. and Hoghooghi Rad, L. and Pour-Jafari, Hamid. and Farhud, Daryoush. and Dolati, M. and Safa Chaleshtori, K. and Sasanfar, Roksana. and Hosseinipour, A. and Andonian, Laris. and Tolouei, A. and Ghadami, M. and Patton, M.A. (2006) Autosomal recessive and sporadic non syndromic hearing loss and the incidence of Cx26 mutations in a province of Iran. Iranian Journal of Public Health, 35 (1). pp. 88-91.


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Despite the enormous heterogeneity of genetic hearing loss, mutations in the GJB2 (connexin 26) gene located on "DFNB1" locus (13q12) account for up to 50 of cases of autosomal recessive non-syndromic hearing loss (ARNSHL) in some populations. This study describes the analysis of 100 autosomal recessive and sporadic nonsyndromic hearing loss individuals from 79 families each having at least one deaf child in Chehar Mahal va Bakhtiari province in west of Iran. We have investigated the prevalence of the connexin 26 gene mutations using nested PCR strategy to screen the predominant 35delG mutation and subsequent direct sequencing to detect other Cx26 mutations. Seven different genetic variants were detected from which one novel variant was including 363delC. The 35delG was the most common mutation found in 5 of 79 families (6.3). Cx26 related deafness mutations (35delG,V27I; E114G) and R127H) were found in 12 of 158 chromosomes studied (7.8%). We conclude that the association of Cx26 mutations with deafness in Chehar Mahal va Bakhtiari province is low and looks like most other populations of Iran.

Item Type: Article
Additional Information: cited By
Uncontrolled Keywords: connexin 26, adolescent; adult; article; autosomal recessive disorder; child; chromosome analysis; controlled study; family; gene deletion; gene mutation; gene sequence; genetic association; genetic screening; genetic variability; hearing loss; human; incidence; Iran; major clinical study; nucleotide sequence; pathogenesis; polymerase chain reaction; prevalence
Subjects: QU Biochemistry > Cell biology and genetics
WV Otolaryngology
Divisions: Reserach Vice-Chancellar Department > Cellular and Molecular Research Center
Depositing User: Users 1 not found.
Date Deposited: 21 Aug 2017 07:57
Last Modified: 15 Apr 2018 06:33

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