Age-associated deficit of mitochondrial oxidative phosphorylation in skeletal muscle

Role of carnitine and lipoic acid

S. Kumaran, Kavin S. Panneerselvam, S. Shila, K. Sivarajan, C. Panneerselvam

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Mitochondrial damage has implicated a major contributor for ageing process. In the present study, we measured mitochondrial membrane swelling, mitochondrial respiration (state 3 and 4) by using oxygen electrode in skeletal muscle of young (3-4 months old) and aged rats (above 24 months old) with supplementation of L-carnitine and dl-α-lipoic acid. Our results shows that the mitochondrial membrane swelling and state 4 respiration were increased more in skeletal muscle mitochondria of aged rats than in young control rats, whereas the state 3 respiration, respiratory control ratio (RCR) and ADP:O ratio decreased more in aged rats than in young rats. After supplementation of carnitine and lipoic acid to aged rats for 30 days, the state 3 respiration and RCR were increased, whereas the state 4 and mitochondrial membrane swelling were decreased to near normal rats. From our results, we conclude that combined supplementation of carnitine and lipoic acids to aged rats increases the skeletal muscle mitochondrial respiration, thereby increasing the level of ATP.

Original languageEnglish
Pages (from-to)83-89
Number of pages7
JournalMolecular and Cellular Biochemistry
Volume280
Issue number1-2
DOIs
Publication statusPublished - 01-12-2005
Externally publishedYes

Fingerprint

Thioctic Acid
Carnitine
Oxidative Phosphorylation
Muscle
Rats
Skeletal Muscle
Mitochondrial Swelling
Respiration
Mitochondrial Membranes
Swelling
Membranes
Rat control
Mitochondria
Muscle Mitochondrion
Adenosine Diphosphate
Adenosine Triphosphate
Aging of materials
Electrodes
Oxygen

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Clinical Biochemistry
  • Cell Biology

Cite this

Kumaran, S. ; Panneerselvam, Kavin S. ; Shila, S. ; Sivarajan, K. ; Panneerselvam, C. / Age-associated deficit of mitochondrial oxidative phosphorylation in skeletal muscle : Role of carnitine and lipoic acid. In: Molecular and Cellular Biochemistry. 2005 ; Vol. 280, No. 1-2. pp. 83-89.
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Age-associated deficit of mitochondrial oxidative phosphorylation in skeletal muscle : Role of carnitine and lipoic acid. / Kumaran, S.; Panneerselvam, Kavin S.; Shila, S.; Sivarajan, K.; Panneerselvam, C.

In: Molecular and Cellular Biochemistry, Vol. 280, No. 1-2, 01.12.2005, p. 83-89.

Research output: Contribution to journalArticle

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