Abstract
1. 1. The effect of various inhibitors of fatty acid transport and of respiratory chain on palmitate oxidation was investigated in homogenates and mitochondria of rat muscle and homogenates of rat liver and human muscle. 2. 2. Inhibition of fatty acid transport by carnitine omission, malonyl-CoA. tetradecylglycidic acid and mersalyl decreased oxidation more with muscle than with rat liver. 3. 3. Antimycin and KCN decreased markedly palmitate oxidation and caused a larger accumulation of peroxisomal oxidation products. 4. 4. Inhibition of mitochondrial long-chain fatty acid transport decreased accumulation of peroxisomal products in comparison to the control. 5. 5. The effect of malonyl-CoA was dependent on the nutritional state, the pH and the palmitatc-alhumin ratio with liver homogenates. and only on the latter parameter with muscle homogenates. 6. 6. Effects observed were comparable for rat and human muscle homogenates.
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