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Treatment with dehydroepiandrosterone (DHEA) stimulates oxidative energy metabolism in the liver mitochondria from
Minal A Patel1, Surendra S Katyare
1Department of Biochemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat 390 002, India,
Abstract:
Effects of treatment with DHEA (0.2 mg or 1.0 mg / kg body weight for 7 days) on oxidative energy metabolism on liver mitochondria from developing and young adult rats were examined. Treatment with DHEA resulted in a progressive dose-dependent increase in the liver weights of the developing animals without change in the body weight. In the young adult rats treatment with 1.0 mg DHEA showed increase only in the body weight. Treatment with DHEA stimulated state 3 and state 4 respiration rates in developing as well as young adult rats in dose-dependent manner with all the substrates used; magnitude of stimulation was age-dependent. In young adults the extent of simulation of state 3 respiration rates declined at higher dose (1.0 mg) of DHEA with glutamate and succinate as substrates. Stimulation of state 3 respiration rates was accompanied by increase in contents of cytochrome aa3, b and c + c1 and stimulation of ATPase and dehydrogenases activities in dose- and age-dependent manner.
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