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      Inhibition of β-oxidation by 3-mercaptopropionic acid produces features of Reye's syndrome in perfused rat liver

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      Gastroenterology
      Elsevier BV

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          Abstract

          The cause of Reye's syndrome has not been completely defined. The rate of ketogenesis in the liver is a key determinant of, and reciprocally related to, triglyceride secretion. In the present study, 3-mercaptopropionic acid (MPA), a known inhibitor of mitochondrial long-chain acyl coenzyme A (CoA) dehydrogenase, was used to investigate the relationship between ketone body production, triglyceride secretion, and triglyceride accumulation in perfused rat liver. Livers from fasted rats were perfused 225 minutes with or without MPA in the presence of [1-14C]oleic acid. Morphology was studied by light and electron microscopy. Inhibition of fatty acid oxidation by the liver with MPA resulted in a decrease in ketone body production. Treatment with MPA caused an accumulation of small-droplet triglycerides in liver, whereas the net secretion of triglyceride ceased after an initial period of increased secretion with continued decreased ketogenesis. At the end of the perfusion period, mitochondria in the MPA group appeared to be damaged. The rates of both ketogenesis and triglyceride secretion by the liver appear to be the major determinants of hepatic triglyceride content. In addition, the MPA-mediated biochemical and morphological findings are quite similar to those of Reye's syndrome.

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          Author and article information

          Journal
          Gastroenterology
          Gastroenterology
          Elsevier BV
          00165085
          August 1994
          August 1994
          : 107
          : 2
          : 517-524
          Article
          10.1016/0016-5085(94)90179-1
          8039627
          100ae95b-b1af-428f-ac98-d1343376bbb0
          © 1994

          http://www.elsevier.com/tdm/userlicense/1.0/

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