| Repeated interruptions of the testicular blood flow do not have long-term effects on spermatogenesis in the ram. | |
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MedLine Citation:
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PMID: 8250287 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The effect of repeated interruptions of the testicular blood flow on spermatogenesis was studied in mature Texel rams. Reversible interruption of the blood flow was achieved by an inflatable occluder, placed around the testicular artery at the level of the spermatic cord. In eight testes the blood flow was successfully interrupted six times for 1 h within 3 weeks and in 14 testes nine times for 1 h within 3 weeks. Nine weeks after the last blood flow interruption spermatogenesis was evaluated in histological sections of the testes. Both after six and nine blood flow interruptions a qualitatively complete epithelium was found in at least 90% of the seminiferous tubules. Cell counts in stages VII and VIII of the spermatogenic cycle revealed a slight decrease of spermatocytes and spermatids in the tubules with a complete epithelium after nine occlusions, which was only statistically significant for Preleptotene Spermatocytes. After six occlusions the numbers of all cell types were at or even slightly above control levels. These results show that repeated periods of ischaemia for 1 h do not result in conspicuous long-term damage to spermatogenesis. |
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Authors:
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J van Vliet; G Dijkstra; D G de Rooij; C J Wensing; A L Bootsma |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Andrologia Volume: 25 ISSN: 0303-4569 ISO Abbreviation: Andrologia Publication Date: 1993 Sep-Oct |
Date Detail:
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Created Date: 1993-12-29 Completed Date: 1993-12-29 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0423506 Medline TA: Andrologia Country: GERMANY |
Other Details:
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Languages: eng Pagination: 245-9 Citation Subset: IM |
Affiliation:
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Department of Anatomy, School of Veterinary Medicine, State University Utrecht, The Netherlands. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Constriction Ischemia / pathology, physiopathology Male Regional Blood Flow Seminiferous Epithelium / pathology Sheep Spermatogenesis / physiology* Testis / blood supply*, pathology, physiopathology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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