Psychophysical Evaluation of Cochlear Hair Cell Damage Due to the A3243G Mitochondrial DNA Mutation
نویسندگان
چکیده
منابع مشابه
Single-cell A3243G mitochondrial DNA mutation load assays for segregation analysis.
Segregation of mitochondrial DNA (mtDNA) is an important underlying pathogenic factor in mtDNA mutation accumulation in mitochondrial diseases and aging, but the molecular mechanisms of mtDNA segregation are elusive. Lack of high-throughput single-cell mutation load assays lies at the root of the paucity of studies in which, at the single-cell level, mitotic mtDNA segregation patterns have been...
متن کاملHearing impairment is common in various phenotypes of the mitochondrial DNA A3243G mutation.
OBJECTIVE To determine whether there are common symptoms within different phenotypes of the mitochondrial DNA A3243G mutation. DESIGN A series of 52 adults with mitochondrial encephalomyopathies and their symptomatic relatives were screened for the A3243G mutation using restriction enzyme analysis. In addition to clinical examination, patients with the mutation underwent audiometry. RESULTS...
متن کاملVarying loads of the mitochondrial DNA A3243G mutation in different tissues: implications for diagnosis.
Testing for common mutations in mitochondrial DNA (mtDNA), including the A3243G MELAS (mitochondrial encephalomyopathy, lactic acidosis, and strokelike episodes) mutation, is routinely done in DNA isolated from blood. Since the blood level of the A3243G mutation may be low in probands and even lower in asymptomatic or oligosymptomatic maternal relatives, we assessed the proportion of A3243G mut...
متن کاملThe mitochondrial A3243G mutation presenting as severe cardiomyopathy.
A 6 year old Portuguese boy with dilated cardiomyopathy had abundant ragged red fibres in muscle (20% of total) and severe lactic acidosis. Molecular genetic analysis showed the A to G transition in the mitochondrial transfer RNALeu(UUR) gene at nt 3243 ("MELAS mutation"), which accounted for 88% and 68% of the total mtDNA in his muscle and blood, respectively. Molecular studies in blood from 1...
متن کاملLack of Association of Mitochondrial A3243G tRNALeu Mutation in Iranian Patients with Type 2 Diabetes
Many kinds of mutations in mitochondrial (mt) DNA have been reported to be related to the development of Diabetes Mellitus (DM), this type of diabetes has also been shown to be influenced by other genetic factors and/or environmental factors. Among them, tRNALeu(UUR) and its adjacent mtDNA NADH dehydrogenase subunit 1(ND1) region within the mt genome are linked to high susceptibility to DM. A p...
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ژورنال
عنوان ژورنال: Journal of the Association for Research in Otolaryngology
سال: 2001
ISSN: 1525-3961
DOI: 10.1007/s101620010061