| Inhibition of beta-oxidation by 3-mercaptopropionic acid produces features of Reye's syndrome in perfused rat liver. | |
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MedLine Citation:
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PMID: 8039627 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND/AIMS: 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. METHODS: 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. RESULTS: 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. CONCLUSIONS: 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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Authors:
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M Yamamoto; Y Nakamura |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Gastroenterology Volume: 107 ISSN: 0016-5085 ISO Abbreviation: Gastroenterology Publication Date: 1994 Aug |
Date Detail:
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Created Date: 1994-08-25 Completed Date: 1994-08-25 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0374630 Medline TA: Gastroenterology Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 517-24 Citation Subset: AIM; IM |
Affiliation:
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Department of Chemistry, Kurume University School of Medicine, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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3-Mercaptopropionic Acid
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pharmacology* Animals Fatty Acids / metabolism Ketone Bodies / biosynthesis Liver / drug effects*, metabolism, pathology Male Mitochondria, Liver / drug effects, pathology Oxidation-Reduction Perfusion Rats Rats, Sprague-Dawley Reye Syndrome / metabolism*, pathology Triglycerides / metabolism, secretion |
| Chemical | |
Reg. No./Substance:
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0/Fatty Acids; 0/Ketone Bodies; 0/Triglycerides; 107-96-0/3-Mercaptopropionic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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