title: Effect of prostacyclin (PGI2) on water and solute transport in the human jejunum.
abstract: Prostacyclin is an arachidonic acid metabolite, synthesised throughout the gastrointestinal tract, which has different effects on water and electrolyte transport across a variety of mammalian gastrointestinal epithelia. Using a perfusion technique in the human jejunum of 11 healthy subjects in vivo, the effect of intravenous prostacyclin, 4 ng/kg/min, on jejunal water and solute transport from a glucose electrolyte solution was investigated. In the prostacyclin group (n = 5), prostacyclin was infused intravenously from 70-150 minutes, and buffer administered iv from 0-70 and 150-210 minutes. In the buffer group (n = 6), iv buffer was administered from 0-210 minutes. In the prostacyclin group, net jejunal absorption of water was inhibited from 90-120 min (p less than 0.05), 150-180 min (p less than 0.01) and 180-210 min (p less than 0.01), of sodium was inhibited from 90-120 min (p less than 0.05), 120-150 min (p less than 0.05), 150-180 min (p less than 0.01) and 180-210 min (p less than 0.01), and of chloride was inhibited from 90-120 min (p less than 0.05), 120-150 min (p less than 0.005), 150-180 min (p less than 0.01) and 180-210 min (p less than 0.01). Prostacyclin had no effect on net movement of glucose, potassium or bicarbonate. These results are consistent with a role for prostacyclin in the endogenous humoral regulation of water and electrolyte transport in the human jejunum.
mesh_terms: D000328:Adult; D001692:Biological Transport / Q000187:drug effects; D001834:Body Water / Q000378:metabolism*; D002712:Chlorides / Q000378:metabolism; D004573:Electrolytes / Q000378:metabolism*; D011464:Epoprostenol / Q000494:pharmacology*; D005260:Female; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D007408:Intestinal Absorption / Q000187:drug effects; D007583:Jejunum / Q000378:metabolism*; D008297:Male; D012964:Sodium / Q000378:metabolism
chemical_list: D002712:Chlorides; D004573:Electrolytes; D012964:Sodium; D011464:Epoprostenol