Tissue distribution of the molybdenum hydroxylases, aldehyde oxidase and xanthine oxidase, in male and female guinea pigs

Eur J Drug Metab Pharmacokinet. 1987 Oct-Dec;12(4):303-6. doi: 10.1007/BF03189918.


The activity of the molybdenum hydroxylase, aldehyde oxidase, was determined in crude homogenates and (NH4)2SO4 fractions prepared from guinea pig liver, lung, kidney, intestine, spleen and heart. Xanthine oxidase was also measured in (NH4)2SO4 fractions. In each case, xanthine oxidase levels were lower than those of aldehyde oxidase; activity of the latter enzyme was highest in the liver, whereas xanthine oxidase was predominant in the small intestine. There was no significant difference in the activity of either molybdenum hydroxylase between tissues taken from male and female guinea pigs.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aldehyde Oxidase
  • Aldehyde Oxidoreductases / metabolism
  • Aldehyde Oxidoreductases / pharmacokinetics*
  • Animals
  • Chromatography, High Pressure Liquid
  • Guinea Pigs
  • Kidney / enzymology
  • Liver / enzymology
  • Lung / enzymology
  • Male
  • Myocardium / enzymology
  • Spleen / enzymology
  • Tissue Distribution
  • Xanthine Oxidase / metabolism
  • Xanthine Oxidase / pharmacokinetics*


  • Xanthine Oxidase
  • Aldehyde Oxidoreductases
  • Aldehyde Oxidase