Acetorphan prevents cholera-toxin-induced water and electrolyte secretion in the human jejunum.
Acetorphan is an orally administered inhibitor of enkephalinase in the wall of the digestive tract.
It prevents inactivation of endogenous opioid peptides released by submucosal and myenteric neurons.
The aim of this study was to examine the effect of acetorphan on jejunal water and electrolyte transport in healthy volunteers under basal conditions and in a state of intestinal secretion induced by a bacterial enterotoxin.
Ten volunteers in two groups were studied in an open trial.
For the experimental design an intestinal perfusion technique was used.
Cholera toxin was used to induce intestinal secretion in a model employing segmental perfusion of the human proximal jejunum.
Acetorphan was given orally prior to intrajejunal administration of cholera toxin ; its effect on intestinal transport was measured over a period of four hours after exposure to cholera toxin.
Serum levels of methylthioether of thiorphan as the main metabolite were measured throughout three experiments to assure sufficient drug absorption.
Acetorphan had no influence on basal water and electrolyte absorption (133 vs. 140ml/30cm. h).
In a control group with cholera toxin alone, significant water secretion was induced (131 ml/30cm. h).
Acetorphan completely prevented this secretion by leaving an absorption rate of 27 ml/30cm.h. Intestinal electrolyte transport was also significantly changed towards absorption by acetorphan. (...)
Mots-clés Pascal : Jéjunum, Toxine, Choléra, Bactériose, Infection, Enképhaline, Facteur prédictif, Sécrétion inappropriée, Contamination, Eau, Prévention, Homme, Autriche, Europe, Appareil digestif pathologie, Intestin pathologie, Neuropeptide, Peptide opioïde, Hormone peptide, Pollution, Acetorphan
Mots-clés Pascal anglais : Jejunum, Toxin, Cholera, Bacteriosis, Infection, Enkephalin, Predictive factor, Inappropriate secretion, Contamination, Water, Prevention, Human, Austria, Europe, Digestive diseases, Intestinal disease, Neuropeptide, Opioid peptide, Peptide hormone, Pollution
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0495016
Code Inist : 002B02H. Création : 03/02/1998.