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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Gestational, pathologic and biochemical differences between very long-chain acyl-CoA dehydrogenase deficiency and long-chain acyl-CoA dehydrogenase deficiency in the mouse.

Although many patients have been found to have very long-chain acyl-CoA dehydrogenase (VLCAD) deficiency, none have been documented with long-chain acyl-CoA dehydrogenase (LCAD) deficiency. In order to understand the metabolic pathogenesis of long-chain fatty acid oxidation disorders, we generated mice with VLCAD deficiency (VLCAD(-/-)) and compared their pathologic and biochemical phenotypes of mice with LCAD deficiency (LCAD(-/-)) and wild-type mice. VLCAD(-/-) mice had milder fatty change in liver and heart. Dehydrogenation of various acyl-CoA substrates by liver, heart and skeletal muscle mitochondria differed among the three genotypes. The results for liver were most informative as VLCAD(-/-) mice had a reduction in activity toward palmitoyl-CoA and oleoyl-CoA (58 and 64% of wild-type, respectively), whereas LCAD(-/-) mice showed a more profoundly reduced activity toward these substrates (35 and 32% of wild-type, respectively), with a significant reduction of activity toward the branched chain substrate 2,6-dimethylheptanoyl-CoA. C(16) and C(18) acylcarnitines were elevated in bile, blood and serum of fasted VLCAD(-/-) mice, whereas abnormally elevated C(12) and C(14) acylcarnitines were prominent in LCAD(-/-) mice. Progeny with the combined LCAD(+/+)//VLCAD(+/-) genotype were over-represented in offspring from sires and dams heterozygous for both LCAD and VLCAD mutations. In contrast, no live mice with a compound LCAD(-/-)//VLCAD(-/-) genotype were detected.[1]

References

  1. Gestational, pathologic and biochemical differences between very long-chain acyl-CoA dehydrogenase deficiency and long-chain acyl-CoA dehydrogenase deficiency in the mouse. Cox, K.B., Hamm, D.A., Millington, D.S., Matern, D., Vockley, J., Rinaldo, P., Pinkert, C.A., Rhead, W.J., Lindsey, J.R., Wood, P.A. Hum. Mol. Genet. (2001) [Pubmed]
 
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