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Mitochondrial DNA (mtDNA) haplotypes
and dysfunctions in presbyacusis

Research Authors
Hossam Mostafa, M. Saad, A. El-Attar, G. Ahmed, S. Berrettini, F. Forli, G. Siciliano, M. Mancuso
1 Audiology Unit,
Research Journal
Acta Otorhinolaryngol Ital
Research Publisher
ACTA otorhinolaryngologica ita lica
Research Rank
1
Research Vol
34
Research Website
www.actaitalica.it
Research Year
2014
Research_Pages
54-61
Research Abstract

The aim of this study was to investigate the presence of mitochondrial DNA (mtDNA) alterations and metabolic dysfunctions in patients with presbyacusis, and to discover correlations between presbyacusis and the degree of hearing loss and mitochondrial damage. Seventy patients with presbyacusis were examined, including 40 Egyptian patients and 30 Italian patients. Forty eight normal subjects were included as control group, including 24 Egyptians and 24 Italians. There was no common point mutation, and A1555G, A3243G, A7445G not were detected in any patients or controls. Haplogroup U was significantly common in patients in comparison to controls. Mutation of antioxidant genes (GSTT1, GSTM1) were significantly present in only Italian patients compared to Italian controls.