Retinal dystrophy associated with a single-base deletion mutation in mitochondrial DNA 3271 in patient with MELAS syndrome
2019
Purpose
Mitochondrial encephalopathy with lactic acid and stroke-like episodes (MELAS) is caused by mutations in the mitochondrial DNA. Approximately 80% of MELAS patients have an A > G transition mutation at nucleotide pair 3243 in the mitochondrial DNA, m.3243A > G. There are also MELAS patients with a one-base deletion at nucleotide pair 3271 in the mitochondrial DNA, m.3271delT, but these cases are very rare. We report a case of MELAS with the m.3271delT and describe the retinal structure and electrophysiological alterations.
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