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Updated: Jul 10, 2026

Gastrointestinal Motility Monitor (GIMM)
Published on: December 1, 2010
Ileal smooth muscle motility depression on rabbit induced by toxin A from Clostridium difficile
Crystianne Calado Lima1, João Luis Carvalho-de-Souza, Aldo Angelo Moreira Lima
1Laboratório de Eletrofisiologia, Instituto Superior de Ciências Biomédicas, Universidade Estadual do Ceará, Av. Paranjana, 1700, Parangaba, Fortaleza, Ceara 60740-000, Brazil.
Abstract:
This study is aimed at elucidating with in vitro experiments the time course of alteration of ileal motility caused by in vivo exposure of ligated loops of ileum to toxin A (1 microg/ligated loop) of Clostridium difficile. In the sham-operated animals no significant alteration of motility was observed. In ligated loops directly injected with toxin A and in loops neighboring those administered with this toxin, a biphasic time course of motility alterations was observed. There was initially (2 h after toxin administration) an increase in spontaneous motility and in the amplitude of maximal contraction induced by potassium and acetylcholine. Afterwards there was a progressive depression of motility, which was more severe in loops directly injected. These results suggested a significant progressive depression of rabbit ileal motility induced by toxin A from C. difficile.
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