J Korean Diabetes Assoc.
1999 Apr;23(2):207-214.
A Case of Insulin Dependent Diabetes Mellitus with MELAS Syndrome Associated with a Mutation of
Mitochondrial DNA
- Affiliations
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- 1Department of Internal Medicine, Cathoic University College of Medicine, Seoul, Korea.
- 2Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
Abstract
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Mitochondrial mutations are associated with a wide range of disorders (Kearns-Sayre and chronic progressive
external ophthalmoplegia syndromes, Myoclonic epilepsy and ragged-red fibre disease, Mitoehondrial
encephalomyopathy, lactic acidosis, and stroke-like episodes, Leighs disease ancl cerebellar ataxia plus
pigmentary retinopathy syndromes), which is inherited maternally. A-to-G mutation at nuclcotide position 3243 was
originally identified in MEI.AS syndrome (mitochondrial myopathy, encephalopathy, lactic acidosis and stroke-like
episodes) and accounted for about 80% of the MELAS cases, Recently, this mutation was reported in maternally
inherited NIDDM patients. It was also repoded that approximatedly 1% of diabetic patients have this mutation. We
performed the molecular genetic analysis of mtDNA in one female insulin dependent diabetic patient with MELAS
syndrome and her family members, and also confirmed the A-to-G mutation at nucleotide 3243 of the mtRNA Leu(UUR)
gene in their family members.