Movement Disorders (revue)

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Complete mitochondrial DNA sequence analysis in a family with early-onset dystonia and optic atrophy

Identifieur interne : 005A34 ( Main/Merge ); précédent : 005A33; suivant : 005A35

Complete mitochondrial DNA sequence analysis in a family with early-onset dystonia and optic atrophy

Auteurs : Michael D. Brown [États-Unis] ; Seyed Hosseini [États-Unis] ; Israel Steiner [Israël] ; Douglas C. Wallace [États-Unis] ; Isabelle Korn-Lubetzki [Israël]

Source :

RBID : Pascal:04-0365464

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English descriptors

Abstract

The combination of optic atrophy and dystonia has been etiologically associated with mitochondrial DNA (mtDNA) mutations. We report here on the complete mtDNA sequence from the proband of a consanguineous family exhibiting "mitochondrial-like" optic atrophy and dystonia. A candidate tRNAGly mutation was identified that was unique to the family. However, the mutation was homoplasmic in both affected and unaffected family members and we were unable to demonstrate a biochemical defect in patient mitochondria. Hence, it is unlikely that a mtDNA mutation accounts for the phenotype in this family.

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Pascal:04-0365464

Le document en format XML

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<div type="abstract" xml:lang="en">The combination of optic atrophy and dystonia has been etiologically associated with mitochondrial DNA (mtDNA) mutations. We report here on the complete mtDNA sequence from the proband of a consanguineous family exhibiting "mitochondrial-like" optic atrophy and dystonia. A candidate tRNA
<sup>Gly</sup>
mutation was identified that was unique to the family. However, the mutation was homoplasmic in both affected and unaffected family members and we were unable to demonstrate a biochemical defect in patient mitochondria. Hence, it is unlikely that a mtDNA mutation accounts for the phenotype in this family.</div>
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