[Vascular perfusion of an intestinal segment in the catfish (Ictalurus melas, R): demonstration of the vasoactive effects of mammalian VIP and of gastrointestinal extracts from teleost fish].
Through the middle mesenteric artery and the hepatic portal vein it is possible to perfuse specifically a small part of the catfish midgut. Using a tested VIP extraction procedure it is shown that trout and catfish extracts of oesophagus, stomach, midgut and hindgut induce a vasodilation similar to that of porcine VIP. The importance of the vasodilatory response depends on the level of perfused VIP and extracted tissue.
D000818:Animals; D004068:Digestive System Physiological Phenomena; D004947:Esophagus / Q000502:physiology; D005399:Fishes; D005768:Gastrointestinal Hormones / Q000494:pharmacology*; D007422:Intestines / Q000098:blood supply / Q000187:drug effects / Q000502:physiology*; D008099:Liver / Q000502:physiology; D010477:Perfusion; D013045:Species Specificity; D014020:Tissue Extracts / Q000494:pharmacology*; D014337:Trout; D014660:Vasoactive Intestinal Peptide / Q000494:pharmacology*; D014664:Vasodilation / Q000187:drug effects*
D005768:Gastrointestinal Hormones; D014020:Tissue Extracts; D014660:Vasoactive Intestinal Peptide
Perfusion vasculaire d'un segment intestinal chez le poissonchat (Ictalurus mélas, R.): démonstration des effets vasoactifs du VIP de mammifère et d'extraits de tractus gastro-intestinal de Poisson téléostéen.