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Influence of 7α-Ethylthio-17β-Hydroxy-17α-Methyl-5α-Androstano-[3, 2-C] Pyrazole (PS-179) and Methyltestosterone on the Catabolism, Excretion and Distribution of Exogenous Cholesterol-4-14C in the Rat

  • Keiji Nakamura
  • Hideo Nakamura
  • Yoshinobu Masuda
  • Yasuji O’saki
Chapter

Summary

The mechanisms of PS-179-induced hypocholesterolaemic action and prevention of experimental atherosclerosis have been further investigated in normocholesterolaemic rats using methyltestosterone as control.

The oxidative catabolic conversion of intraperitoneally injected cholesterol-4-14C into the biliary bile acids was increased significantly by oral treatment with PS-179 but not with MT in the bile-fistula animal. The conversion of orally administered cholesterol-4-14C was found to increase in faecal bile acids only with PS-179 in the intact animal, though the increase was not so marked as in the bile-fistula preparation.

Biliary analysis in the fistula animal indicated that elevation of incorporated taurocholate or taurocholate/taurochenodeoxycholate ratio caused by continuous draining of the bile tended to increase with both PS-179 and MT.

After oral dosage with cholesterol-4-14C, plasma and tissue distributions of the total 14C-activity were decreased only with PS-179 on the third day and slightly increased with PS-179 or MT on the first day.

Key-Words

Cholesterol Anabolic Steroids Methyltestosterone Androgens Bile Acids and Salts 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1969

Authors and Affiliations

  • Keiji Nakamura
    • 1
  • Hideo Nakamura
    • 1
  • Yoshinobu Masuda
    • 1
  • Yasuji O’saki
    • 1
  1. 1.Pharmacological Division, Research LaboratoryDainippon Pharmaceutical Co. Ltd.Fukushima-ku, OsakaJapan

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