Glicentin, an active enteroglucagon, has a significant trophic role on the small intestine but not on the colon in the rat.

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 Ther

authors

Sasaki M,Fitzgerald AJ,Mandir N,Sasaki K,Wright NA,Goodlad RA

doi

10.1046/j.1365-2036.2001.01082.x

subject

Has Abstract

pub_date

2001-10-01 00:00:00

pages

1681-6

issue

10

eissn

0269-2813

issn

1365-2036

pii

apt1082

journal_volume

15

pub_type

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