PMID- 6095680 OWN - NLM STAT- MEDLINE DCOM- 19850124 LR - 20171213 IS - 0002-9513 (Print) IS - 0002-9513 (Linking) VI - 247 IP - 6 Pt 1 DP - 1984 Dec TI - Alterations in motor function of the small intestine from intravenous and intraluminal cholecystokinin. PG - G724-8 AB - Cholecystokinin has been found within the lumen of the gastrointestinal tract; however, its effect on intestinal motility has not been studied. We examined the effect of intraluminal and intravenous infusion of the octapeptide of cholecystokinin (CCK-OP) on myoelectric activity in the intestine of rabbits. CCK-OP was infused intraluminally at 1,000 ng X kg-1 X h-1, and portal venous blood samples were obtained hourly for plasma immunoreactive CCK. CCK-OP was also infused intravenously at a similar rate, and hourly peripheral venous blood samples were obtained for plasma immunoreactive CCK. Myoelectric activity was monitored in a 12-cm ligated ileal segment and the proximal adjacent small intestine after the infusion of intraluminal or intravenous CCK-OP. Intraluminal infusion of CCK-OP caused a significant increase (P less than 0.01) in both migrating action potential complexes (MAPC) and repetitive bursts of action potentials (RBAP) (3.1 +/- 0.8 MAPC/h and 4.6 +/- 1.3 RBAP/h). In contrast, intravenous CCK-OP induced only repetitive bursts of action potentials (8.3 +/- 1.7 RBAP/h, P less than 0.01). In summary, alterations in intestinal motility may vary according to the route of administration of the individual peptide. Furthermore, results from these studies suggest that intraluminal release of regulatory peptides may be important in the modulation of intestinal motility. FAU - Sninsky, C A AU - Sninsky CA FAU - Wolfe, M M AU - Wolfe MM FAU - McGuigan, J E AU - McGuigan JE FAU - Mathias, J R AU - Mathias JR LA - eng GR - AA-03965/AA/NIAAA NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Am J Physiol JT - The American journal of physiology JID - 0370511 RN - 9011-97-6 (Cholecystokinin) RN - M03GIQ7Z6P (Sincalide) SB - IM MH - Action Potentials/drug effects MH - Animals MH - Cholecystokinin/blood MH - Gastrointestinal Motility/*drug effects MH - Ileum/*drug effects MH - Infusions, Parenteral MH - Injections MH - Rabbits MH - Radioimmunoassay MH - Sincalide/*pharmacology EDAT- 1984/12/01 00:00 MHDA- 1984/12/01 00:01 CRDT- 1984/12/01 00:00 PHST- 1984/12/01 00:00 [pubmed] PHST- 1984/12/01 00:01 [medline] PHST- 1984/12/01 00:00 [entrez] AID - 10.1152/ajpgi.1984.247.6.G724 [doi] PST - ppublish SO - Am J Physiol. 1984 Dec;247(6 Pt 1):G724-8. doi: 10.1152/ajpgi.1984.247.6.G724.