Fecal Androgen, A Progesterone Metabolite in the Bovine.

Miller, William R.; Turner, C. W.

doi:10.3181/00379727-90-21964

Cited by 9 publications

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“…It is now well recognized that some of the androgenic compounds present in urine can be derived from non-androgenic precursors such as cortisol (see review by Short, 1960b); the cow may even produce androgenic metabolites from progesterone (Miller & Turner, 1955). Whereas the bovine adrenal seems to be a very poor source of androgens (Short, 1960b), there are at least two androgens, testosterone and androstenedione, present in bovine ovaries (Short, 1962a); both of these steroids would be expected to contribute to the andro¬ genic steroids in bovine urine.…”

Section: 'Adrenal Virilism'mentioning

confidence: 99%

Steroid Concentrations in Normal Follicular Fluid and Ovarian Cyst Fluid From Cows

Short¹

1962

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1. The following steroids were estimated in five samples of normal bovine follicular fluid, and in twenty-four samples of cyst fluid from cows with cystic ovaries: progesterone, 17\g=a\-hydroxyprogesterone, androstenedione, oestrone and oestradiol-17\g=b\. 20\g=b\-Hydroxypregn-4-en-3-one was also found in two samples of cyst fluid. No testosterone could be detected in any of the samples assayed.2. Oestradiol-17\g=b\ was the major steroid present in all five samples of follicular fluid. The concentration of oestradiol-17\g=b\ was significantly lower (P<0.01) in the cyst fluid.3. Many of the cyst fluid samples contained large amounts of progesterone, but little or no detectable 17\g=a\-hydroxyprogesterone, androstenedione, oestrone or oestradiol-17\g=b\.Histological examination of the cyst wall in a number of these cases showed atretic or luteinization changes. In one case where luteinization had occurred, 20\g=b\-hydroxypregn-4-en-3-one was also present in the cyst fluid.4. There was no obvious correlation between the behavioural characteristics of the 'cystic cows' and the nature or amount of the steroids present in the cyst fluid. Thus the steroid concentrations in nine 'cystic cows' with normal oestrous cycles did not differ significantly (P>0.05) from the concentrations in seven nymphomaniac cows.

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