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Case Report: Late-Onset Mitochondrial Disease Uncovered by Metformin Use in a Patient With Acute Verbal Auditory Agnosia
ConclusionsTo our knowledge, this is the first report of a patient having late-onset MELAS syndrome that manifested as acute verbal auditory agnosia, which was identified after the patient began using metformin. Metformin is known to inhibit mitochondrial function and could trigger clinical features of MELAS syndrome. We encourage clinicians to maintain a high level of awareness that diabetes mellitus can be caused by mitochondrial disease and to exercise caution in the prescription of metformin.
Source: Frontiers in Neurology - March 25, 2022 Category: Neurology Source Type: research

Adult onset MELAS Syndrome Presenting as A Mimic of Herpes Simplex Encephalitis.
CONCLUSION: The clinical presentation and imaging studies of MELAS in adults are variable and may mimic those of HSE. Antiviral therapy should be administered until the diagnosis of MELAS is definitive. Infection and metformin may have also precipitated MELAS manifestation in this patient. Clinicians should avoid potential mitochondrial-toxic drugs in these patients. PMID: 31867706 [PubMed - in process]
Source: Acta Neurologica Taiwanica - December 25, 2019 Category: Neurology Tags: Acta Neurol Taiwan Source Type: research