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. 1989 May 15;260(1):215–220. doi: 10.1042/bj2600215

A luminometric assay for peroxisomal beta-oxidation. Effects of fasting and streptozotocin-diabetes on peroxisomal beta-oxidation.

H Osmundsen 1, B Brodal 1, R Hovik 1
PMCID: PMC1138648  PMID: 2775184

Abstract

1. A luminometric assay for acyl-CoA oxidase activity is described. The assay uses the luminol/microperoxidase system to monitor continuously acyl-CoA-dependent generation of H2O2. The assay is rapid, convenient, and lends itself to automation with an LKB 1251 luminometer. The assay is extremely sensitive, requiring at the most 10 micrograms of liver-homogenate protein per assay. 2. The assay can also be used to measure other oxidases, e.g. glycollate oxidase (EC 1.1.3.15), D-aspartate oxidase (EC 1.4.3.1) and urate oxidase (EC 1.7.3.3), the only modification being substitution of substrates to appropriate concentration. 3. With rat liver homogenates, spectrophotometrically measured rates of palmitoyl-CoA-dependent NAD+ reduction and acyl-CoA oxidase activity [Hryb & Hogg (1979) Biochem. Biophys. Res. Commun. 87, 1200-1206] was generally found in good agreement with luminometrically measured acyl-CoA oxidase activity. 4. With liver homogenates from streptozotocin-diabetic rats, however, rates of palmitoyl-CoA-dependent NAD+ reduction were consistently lower than the corresponding acyl-CoA oxidase activity. This difference was most marked with respect to luminometrically assayed acyl-CoA oxidase activity.

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Selected References

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