Document Detail


Cell cycle distribution of proliferative and functional cells of the rat jejunum after treatment with oral E2 prostaglandins.
MedLine Citation:
PMID:  3472338     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Proliferative and functional epithelial cells were isolated from jejunal specimens of the rat by means of vibrational treatment combined with differential air insufflation. This method gave a good separation between superficial cells of the villi and the crypt cells, as evaluated by flow cytometry, morphology, cytology, and incorporation of radioactive thymidine into DNA. Groups of Sprague-Dawley rats (260 g) were treated twice daily for 11 days with oral placebo, 15(R)15-methyl-prostaglandin E2 in the range of 0.125-2 mg X kg-1, or 5 mg X kg-1 natural PGE2. Isolated crypt cells and superficial cells of the jejunal villi were then analysed by flow cytometry. Morphometric measurements were performed on sections of some jejunal specimens not submitted to vibrational treatment. The cell cycle distribution of crypt cells was unaffected by treatment with the prostaglandin analogue despite the presence of trophic changes. The proportion of crypt cells in G2/M phase was slightly but significantly reduced in rats given natural PGE2 compared with controls. The cell cycle distribution of villus cells was not affected by prostaglandin treatment. Trophic changes in the absence of increased DNA synthesis (S phase) or increased mitotic activity suggests that the hyperplasia observed after prostaglandin treatment is due to a reduced cell loss and/or slower migration time of epithelial cells.
Authors:
A Uribe; B Tribukait; C Johansson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Scandinavian journal of gastroenterology     Volume:  22     ISSN:  0036-5521     ISO Abbreviation:  Scand. J. Gastroenterol.     Publication Date:  1987 Mar 
Date Detail:
Created Date:  1987-06-11     Completed Date:  1987-06-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0060105     Medline TA:  Scand J Gastroenterol     Country:  NORWAY    
Other Details:
Languages:  eng     Pagination:  177-84     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Administration, Oral
Animals
Cell Cycle / drug effects
DNA / biosynthesis
Dinoprostone
Flow Cytometry
Jejunum / cytology*,  drug effects
Male
Prostaglandins E / pharmacology*
Rats
Rats, Inbred Strains
Chemical
Reg. No./Substance:
0/Prostaglandins E; 363-24-6/Dinoprostone; 9007-49-2/DNA

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


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