Modulation of peroxisomal and microsomal fatty acid oxidation by acetone. A comparative study between liver and kidney.

Comp Biochem Physiol B Biochem Mol Biol

ICBM, Programa de Farmacología Molecular y Clínica, Facultad de Medicina, Universidad de Chile, Santiago, Chile.

Published: December 1998

AI Article Synopsis

  • Acetone consumption enhances various microsomal and peroxisomal activities in rat kidneys, similar to effects observed in the liver.
  • It increases lauric acid hydroxylation, aminopyrine N-demethylation, and UDP-glucuronyltransferase activity while promoting beta-oxidation of palmitoyl CoA and catalase activities.
  • The linked fatty acid oxidation processes may facilitate fatty acid catabolism or contribute to glucose synthesis from fatty acids, triggered by acetone treatment in both organs.

Article Abstract

The effect of acetone consumption on some microsomal and peroxisomal activities was studied in rat kidney and these results were compared with data from former investigations in liver. Acetone increased the microsomal lauric acid hydroxylation, the aminopyrine N-demethylation catalyzed by cytochrome P450 and the microsomal UDP-glucuronyltransferase activity. Also, acetone increased the peroxisomal beta-oxidation of palmitoyl CoA and catalase activities in kidney. These studies suggest that acetone is a common inducer of the microsomal and peroxisomal fatty acid oxidation, as previously shown in both starved and ethanol treated rats. Our results support the hypothesis that microsomal fatty acid omega-hydroxylation results in the generation of substrates being supplied for peroxisomal beta-oxidation. We propose that the final purpose of these linked fatty acid oxidations could be the catabolism of fatty acids or the generation of a substrate for the synthesis of glucose from fatty acids. This pathway would be triggered by acetone treatment in a similar way in liver and kidney.

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http://dx.doi.org/10.1016/s0305-0491(98)10134-7DOI Listing

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