Heat-stable enterotoxin induced apoptosis in small intestine epithelial cells via mitochondrial oxidative phosphorylation pathway.

ABSTRACT: Newborn piglet diarrhea caused by enterotoxigenic Escherichia coli (ETEC) causes serious economic losses in the swine industry worldwide. Heat-stable enterotoxins (STa) secreted by ETEC can damage the intestine, resulting in villus atrophy and shedding, which is the main cause of diarrhea in newborn piglets; however, the mechanism is not clear. This experiment was conducted in vivo (three-day-old suckling mice) and in vitro (IPEC-J2 cells) to explore the effect of STa on the intestinal epithelium by comparing the differences after infection with STa toxin-secreting E. coli O142 or STa-knockout E. coli O142ΔestA. The results showed that STa caused diarrhea, small intestinal edema, atrophy and rupture of small intestinal villi, and death in a dose-dependent

SUBMITTER: Hou M 

PROVIDER: S-EPMC12090930 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature