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Cited by 366

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Muscle coenzyme Q deficiency in familial mitochondrial encephalomyopathy.

Open access
Ogasahara, S, Engel, A G, Frens, D, Mack, D·1989·Proceedings of the National Academy of Sciences

Abstract

The electron transport system of muscle mitochondria was examined in a familial syndrome of lactacidemia, mitochondrial myopathy, and encephalopathy. The propositus, a 14-year-old female, and her 12-year-old sister had suffered from progressive muscle weakness, abnormal fatigability, and central nervous system dysfunction since early childhood. In the propositus, the state 3 respiratory rate of muscle mitochondria with NADH-linked substrates and with succinate was markedly reduced. The levels of cytochromes a + a3, b, and c + c1 were normal. The activities of complexes I, II, III, and IV of the electron transport chain were normal or increased. By contrast, the activities of complex I-III and of complex II-III, both of which need coenzyme Q10 (CoQ10), were abnormally low. On direct measurement, the mitochondrial CoQ10 content was 3.7% of the mean value observed in 10 controls. Serum and cultured fibroblasts of the propositus had normal CoQ10 contents. In the younger sister, the respiratory activities and CoQ10 level of muscle mitochondria were similar to those observed in the propositus. The findings establish CoQ10 deficiency as a cause of a familial mitochondrial cytopathy and suggest that the disease results from a tissue-specific defect of CoQ10 biosynthesis.

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Metadata

Authors
Ogasahara, S., Engel, A. G., Frens, D., & Mack, D.
Venue
Proceedings of the National Academy of Sciences
Published
1989-04
Volume
86
Issue
7
Pages
2379-2382
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1964077809
Cited by
366
References
1
FWCI
1.36
Type
journal article
Language
en
Open access
green

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