Abstract:
BACKGROUND:Many experiments have indicated that the gut glucagons (enteroglucagons) are associated with cell proliferation in the small intestine. However, recent studies have failed to show trophic effects of glicentin (enteroglucagon) on the intestine. AIMS:To examine the effects of glicentin on intestinal proliferation in vivo in the rat. METHODS:Rats were established on total parenteral nutrition for 6 days. Four experimental groups were given daily doses of 1, 4, 20 and 80 microg/rat of glicentin via the jugular vein. Rats fed by total parenteral nutrition and rats fed chow ad libitum were used as controls. Tissues taken from the duodenum, jejunum, ileum and colon were fixed in Carnoy's fluid and microdissected to determine the metaphase arrest scores and crypt fission ratios. RESULTS:The mean metaphase arrest scores per crypt of the small intestine were significantly increased in the rats given 4, 20 and 80 microg of glicentin. These responses were dose-dependent, and were most prominent in the ileum. Crypt fission of the ileum was significantly decreased in the 20 and 80 microg glicentin groups. Glicentin had no effects on proliferation or fission in the colon. CONCLUSIONS:Glicentin is trophic to the rat small intestine, but not the colon.
journal_name
Aliment Pharmacol Therjournal_title
Alimentary pharmacology & therapeuticsauthors
Sasaki M,Fitzgerald AJ,Mandir N,Sasaki K,Wright NA,Goodlad RAdoi
10.1046/j.1365-2036.2001.01082.xsubject
Has Abstractpub_date
2001-10-01 00:00:00pages
1681-6issue
10eissn
0269-2813issn
1365-2036pii
apt1082journal_volume
15pub_type
杂志文章abstract::In the era of expanding medical therapy for ulcerative colitis, surgery is still a very valid option in those patients, where medicine is not able to control symptoms, both in the acute and chronic stages, and also for those at risk of developing a cancer. The ileal pouch-anal anastomosis (IPAA) will, for the vast maj...
journal_title:Alimentary pharmacology & therapeutics
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journal_title:Alimentary pharmacology & therapeutics
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