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Study of the Effect of Steroid Hormones on Serum High- and Low-Molecular Weight Alkaline Phosphatase



Moshtaghie AA1 ; Ani M1 ; Soltani M1
Authors
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Authors Affiliations
  1. 1. Department of Biochemistry, School of Pharmacy, Isfahan University of Med. Sciences, Isfahan, Iran

Source: Indian Journal of Pharmacology Published:1995

Abstract

The present study was undertaken to investigate the effects of testosterone, 17-β-estradiol and castration on serum alkaline phosphatase isoenzymes in male rats. Daily administration of testosterone (2 mg/kg) for 15, 30 and 60 days increased serum total alkaline phosphatase activity by 9, 26 and 65 percent respectively. Estradiol administration (0.2 mg/kg) in the same periods led to the increase of 69, 67 and 68 percent. Enzyme fractionation on sephacryl S-300 revealed that the increase in alkaline phosphatase activity was due to the absolute elevation of low-molecular weight alkaline phosphatase isoenzyme. Castration or treatment with actinomycin-D puromycin of the animal diminished enzyme activity by 28-37 percent. The estradiol induced increase in enzyme activity had additive effect with puromycin or actinomycin D in the doses used.