The excretion of urinary steroids by the owl monkey (Aotus trivirgatus) studied using open tubular capillary column gas chromatography and mass spectrometry.

Abstract

Abstract A qualitative analysis of steroids excreted in urine by the owl monkey (Aotus trivirgatus) is presented. The study was carried out using the high resolving power of wall coated open-tubular glass capillary column gas chromatography and mass spectrometry. Oestrone was the major oestrogen excreted by the female animal and was also present in greater amounts than testosterone in the male monkey. The principal progesterone metabolites were identified to be 6β-hydroxypregnanolone and 16-hydroxypregnanolone isomers. Corticosteroid metabolism was also characterized by the presence of 16-hydroxylated in addition to C-20 reduced metabolites.