| Androgen concentration in the blood and spermatogenic function of tom cats during the breeding season. | |
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MedLine Citation:
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PMID: 2391779 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In order to better understand androgen secretion in the tom cat during the breeding season, observations of diurnal changes in peripheral blood testosterone (T) levels, were made and the relation between androgen levels (androstenedione (A), 5 alpha-dihydrotestosterone (DHT). T) in testicular and peripheral vein blood was borne. Histologic examinations of the testis were also performed to investigate spermatogenic function. The 9 tom cats used in these studies were 2-3 years old, weighed 3.5-4.0 kg, and were raised in a room under natural lighting. As a result, diurnal peripheral blood T levels in the tom cat fluctuated greatly according to each individual, but since no definite trend could be identified, secretion was determined to be episodic. Although fairly large differences in the 3 types of androgen were observed in testicular vein blood depending on the individual animal, levels on the left and right were almost equal. Moreover, a correlation was found between the testicular and peripheral vein blood concentrations of the 3 androgens (A: p less than 0.01; DHT: p less than 0.05; T: p less than 0.01). Therefore, secretion of testicular androgen can be inferred by measuring peripheral blood androgen levels. Testicular histological examination revealed active spermatogenesis in all of the cats, and no significant inter individual differences were detected in either seminiferous tubule diameters or any of the various germ cells. |
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Authors:
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T Tsutsui; I Murao; E Kawakami; A Ogasa; G H Stabenfeldt |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Nihon juigaku zasshi. The Japanese journal of veterinary science Volume: 52 ISSN: 0021-5295 ISO Abbreviation: Nippon Juigaku Zasshi Publication Date: 1990 Aug |
Date Detail:
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Created Date: 1990-10-04 Completed Date: 1990-10-04 Revised Date: 2011-07-25 |
Medline Journal Info:
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Nlm Unique ID: 0057113 Medline TA: Nihon Juigaku Zasshi Country: JAPAN |
Other Details:
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Languages: eng Pagination: 801-6 Citation Subset: IM |
Affiliation:
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Department of Reproduction, Nippon Veterinary and Zootechnical College, Tokyo, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Androstenedione
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blood* Animals Breeding Cats / blood* Circadian Rhythm Dihydrotestosterone / blood* Male Spermatogenesis / physiology* Testis / blood supply Testosterone / blood* Time Factors |
| Chemical | |
Reg. No./Substance:
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521-18-6/Dihydrotestosterone; 58-22-0/Testosterone; 63-05-8/Androstenedione |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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