Literature DB >> 15223352

Age-associated decreased activities of mitochondrial electron transport chain complexes in heart and skeletal muscle: role of L-carnitine.

Sundaram Kumaran1, Marimuthu Subathra, Muthiyah Balu, Chinnakkannu Panneerselvam.   

Abstract

The mitochondrial respiratory chain is a powerful source of reactive oxygen species (ROS), considered as the pathogenic agent of many diseases and aging. L-Carnitine (4-N-trimethylammonium-3-hydroxybutric acid) plays an important role in transport of fatty acid from cytoplasm to mitochondria for energy production. Previous studies in our laboratory reported L-carnitine as a free radical scavenger in aged rats. In the present study we focused the effect of L-carnitine on the activities of electron transport chain in young and aged rats. The activities of electron transport chain complexes were found to be significantly decreased in aged rats when compared to young control rats. Supplementation of carnitine to young and aged rats for 14 and 21 days improved the electron transport chain complexes levels in aged rats when compared with young rats in duration dependent manner. No significant changes were observed in young rats. Our result suggested that L-carnitine improved the activities of electron transport chain enzymes there by improving the energy status in aged rats.

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Year:  2004        PMID: 15223352     DOI: 10.1016/j.cbi.2003.10.010

Source DB:  PubMed          Journal:  Chem Biol Interact        ISSN: 0009-2797            Impact factor:   5.192


  12 in total

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