Targeted disruption of mouse long-chain acyl-CoA dehydrogenase gene reveals crucial roles for fatty acid oxidation.
Abnormalities of fatty acid metabolism are recognized to play a significant role in human disease, but the mechanisms remain poorly understood. Long-chain acyl-CoA dehydrogenase (LCAD) catalyzes the initial step in mitochondrial fatty acid oxidation (FAO). We produced a mouse model of LCAD deficiency with severely impaired FAO. Matings between LCAD +/- mice yielded an abnormally low number of LCAD +/- and -/- offspring, indicating frequent gestational loss. LCAD -/- mice that reached birth appeared normal, but had severely reduced fasting tolerance with hepatic and cardiac lipidosis, hypoglycemia, elevated serum free fatty acids, and nonketotic dicarboxylic aciduria. Approximately 10% of adult LCAD -/- males developed cardiomyopathy, and sudden death was observed in 4 of 75 LCAD -/- mice. These results demonstrate the crucial roles of mitochondrial FAO and LCAD in vivo.
Duke Scholars
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Related Subject Headings
- Substrate Specificity
- Muscle, Skeletal
- Mitochondria, Liver
- Mice, Knockout
- Mice
- Liver
- Lipid Metabolism, Inborn Errors
- Humans
- Fatty Acids, Nonesterified
- Disease Models, Animal
Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- Substrate Specificity
- Muscle, Skeletal
- Mitochondria, Liver
- Mice, Knockout
- Mice
- Liver
- Lipid Metabolism, Inborn Errors
- Humans
- Fatty Acids, Nonesterified
- Disease Models, Animal