Document Detail


Presence of circadian rhythm in the mitotic index of the ruminal epithelium in sheep.
MedLine Citation:
PMID:  625595     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Mitotic indices of the ruminal epithelium of two castrated male sheep fed at 11:00 h were determined at 00:00, 04:00, 08:00, 12:00, 16:00 and 20:00 h. The schedules were repeated in four trials done in December 1975, February, March and June 1976 respectively. The indices ranged from 0.13 to 0.92 per cent, both animals showing a similar tendency in these fluctuations. The mean rate of cell division was low in the morning, high in the afternoon and in the evening, and declined at about midnight. Another pair of male castrated sheep were fed at 07:00, and rumen samples were biopsied six times in three days. The mean rate of epithelial cell division in the rumen was low at 08:00, but high at noon, suggesting that the rate possibly was affected by the food intake of the experimental animals.
Authors:
T Sakata; H Tamate
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Research in veterinary science     Volume:  24     ISSN:  0034-5288     ISO Abbreviation:  Res. Vet. Sci.     Publication Date:  1978 Jan 
Date Detail:
Created Date:  1978-04-17     Completed Date:  1978-04-17     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0401300     Medline TA:  Res Vet Sci     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1-3     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Circadian Rhythm*
Epithelial Cells
Male
Mitosis*
Mitotic Index*
Rumen / cytology*
Sheep / anatomy & histology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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