Studies on the Ovarian Cyst in the Cow. : Iv. The Course of Recovery From Ovarian Follicle Cyst by the Chorionic Gonadotrophin Therapy.

亮, 山内

doi:10.1292/jvms1939.17.47

Cited by 11 publications

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“…Whether this is due to a failure of the ovulatory mechanisms within the ovary, or whether it is due to a derangement in pituitary gonadotrophin secretion is still open to speculation. The fact that luteinizing hormone therapy is often effective in curing the condition (Casida, McShan & Meyer, 1944;Hancock, 1947;Yamauchi, 1955;Roberts, 1956), together with Garm's observations that the pituitaries of affected animals are significantly heavier than normal (Garm, 1949a), all point to the existence of a pituitary defect. Yamauchi, Ashida & Inui (1954) likewise reached a similar conclusion.…”

Section: Cause Of Cystic Ovaries and Treatment Of The Conditionmentioning

confidence: 99%

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

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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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Section: Cause Of Cystic Ovaries and Treatment Of The Conditionmentioning

confidence: 99%