Spermine-Induced Alteration of Small Intestine in Suckling Rat: Involvement of Apoptosis or Zn2+ Enzymes?

Overview

Journal Dig Dis Sci

Specialty Gastroenterology

Date 2001 Nov 21

PMID 11713959

Authors

O Peulen

G Denis

M P DeFresne

G Dandrifosse

Affiliations

Soon will be listed here.

Abstract

Polyamines are of great importance in several physiological processes, such as cell proliferation and differentiation. The ingestion of spermine by suckling rats induces precocious maturation of their small intestine. Shortly after ingestion, spermine produces cell elimination at the villous top. The origin of this exfoliation was investigated to determine whether it was due to apoptosis. Wistar rats were orally treated with spermine. Apoptosis was analyzed in their small intestine by Tdt-mediated dUTP-fluorescein nick-end labeling reaction, caspase-3-like analysis, and DNA laddering. Polyamine content was measured by HPLC. The intestinal transitory alteration appeared as soon as 2 hr after spermine administration. Apoptosis events increased strongly at the same moment in the small intestine. They were evidenced by Tdt-mediated dUTP-fluorescein nick-end labeling analysis, DNA laddering, and caspase-3-like activity. Changes observed are consistent with apoptosis, but caspase inhibitor did not reduce intestinal alteration, as did Zn2+ chelator.

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