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[Molecular etiology of non-syndromic hearing impairment in a Chinese family].

作者信息

Sun Qing, Shan Xi-zheng, Ma Li-tao, Kang Dong-yang, Zhang Xin, Liu Xin, Wang Guo-jian, Yuan Hui-jun, Han Dong-yi

机构信息

Department of Otorhinolaryngology, General Hospital of Chinese People's Armed Police Force, Beijing, China.

出版信息

Zhonghua Yi Xue Za Zhi. 2009 Sep 29;89(36):2540-3.

PMID:20137614
Abstract

OBJECTIVE

To investigate the molecular etiology of non-syndromic hearing impairment in two patients in a maternal inherited deafness Chinese family.

METHODS

Peripheral blood specimens were collected and DNA templates extracted. The complete mitochondrial genomes and GJB2 gene were sequenced in an ABI 3100 Avant sequencer.

RESULTS

The proband (III-5) and her elder sister (III-1) were found to carry the mtDNA 12SrRNA C1494T mutation. The GJB2 gene showed no mutations. The proband had the history of using aminoglycosides before hearing loss, and exhibited severe sensorineural hearing impairment; the proband's sister had no history of using aminoglycosides, and showed moderate sensorineural hearing impairment.

CONCLUSION

The molecular etiology of each individual patient in a family yaries with individual genetic background.

摘要

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