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  • Title: The effect of five days' fasting on skeletal muscle enzymes in obese men.
    Author: Vondra K, Bass A, Brodan V, Vítek V, Teisinger J.
    Journal: Horm Metab Res; 1983 Jun; 15(6):269-71. PubMed ID: 6873878.
    Abstract:
    The effect of 120 hours' (five days) fasting on the activity of some enzymes of energy metabolism in skeletal muscles was investigated in six obese young men. The results revealed a significant decline in the activity of the following enzymes: triosophosphate dehydrogenase (by 20%), glycerol-3-phosphate dehydrogenase (by 24%), lactate dehydrogenase (by 13%), citrate synthase (by 20%), hydroxyacyl-CoA dehydrogenase (by 40%), while the hexokinase and malate dehydrogenase activities were not significantly altered. Contrary to muscles of non-obese healthy men (Vondra, Bass, Brodan, Kuhn, Andĕl, Veselková and Vítek 1982), a smaller decline of activities of the investigated enzymes occurred together with a paradoxical change of the enzyme pattern, namely a predominance of carbohydrate catabolism and a decline of the role of fatty acids in muscle energy metabolism.
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