Lack of evidence in vivo for a remote effect of Escherichia coli heat stable enterotoxin on jejunal fluid absorption

Lucas, M.L. , Duncan, N.W., O'Reilly, N.F., McIlvenny, T.J. and Nelson, Y.B. (2008) Lack of evidence in vivo for a remote effect of Escherichia coli heat stable enterotoxin on jejunal fluid absorption. Neurogastroenterology and Motility, 20(5), pp. 532-538. (doi: 10.1111/j.1365-2982.2007.01046.x)

Abstract

On contact with the mucosa, heat stable (STa) enterotoxin from <i>Escherichia</i> <i>coli</i> reduces fluid absorption in vivo in the perfused jejunum of the anaesthetized rat. The question of whether it also has a vagally mediated remote action on jejunal absorption, when instilled into the ileum, was re-examined, given contradictory findings in the literature. A standard perfused loop preparation was used to measure luminal uptake of fluid <i>in</i> <i>vivo</i> by means of volume recovery. STa in the ileum was found to have no effect on jejunal absorption, regardless of cervical or sub-diaphragmatic vagotomy and also regardless of the nature of the perfusate anion. The batches of toxin were shown in parallel experiments to reduce fluid absorption directly in the jejunum and also in the ileum. Similarly, vagal nerves prior to section had demonstrable <i>in</i> <i>vivo</i> physiological function. There was therefore no evidence for an indirect, vagally mediated ileal effect of STa on proximal fluid absorption.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Lucas, Dr Michael
• Authors: Lucas, M.L., Duncan, N.W., O'Reilly, N.F., McIlvenny, T.J., and Nelson, Y.B.
• Subjects: Q Science > QP Physiology
• College/School: College of Medical Veterinary and Life Sciences > School of Life Sciences
• Journal Name: Neurogastroenterology and Motility
• ISSN: 1350-1925
• ISSN (Online): 1365-2982
• Published Online: 07 January 2008