Mitochondrial DNA (mtDNA) haplotypes and dysfunctions in presbyacusis.
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.
Audiology Unit, ENT Department, Faculty Of Medicine, Assiut University, Egypt;
H
H
Mostafa
Audiology Unit, ENT Department, Faculty Of Medicine, Assiut University, Egypt;
M
M
Saad
Audiology Unit, ENT Department, Faculty Of Medicine, Assiut University, Egypt;
A
A
El-Attar
Department of Genetics, Faculty of Agriculture, Assiut University, Egypt;
G
G
Ahmed
Department of otolaryngology, Faculty of Medicine, University of Pisa, Italy;
S
S
Berrettini
Department of otolaryngology, Faculty of Medicine, University of Pisa, Italy;
F
F
Forli
Department of Neurosciences, Faculty of Medicine, University of Pisa, Italy.
G
G
Siciliano
Department of Neurosciences, Faculty of Medicine, University of Pisa, Italy.
M
M
Mancuso
D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D004272:DNA, Mitochondrial; D005260:Female; D006239:Haplotypes; D034381:Hearing Loss / Q000235:genetics* / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012720:Severity of Illness Index
D004272:DNA, Mitochondrial
Antioxidant genes; Haplogroup; Mitochondria; Presbyacusis