| Autor: |
I, De Dios, J J, Calvo, J I, San Román, M A, Plaza, M A, López |
| Rok vydání: |
1989 |
| Předmět: |
|
| Zdroj: |
Zeitschrift fur Gastroenterologie. 27(6) |
| ISSN: |
0044-2771 |
| Popis: |
The effect of isoproterenol (0.3 micrograms/Kg/min) on exocrine pancreatic secretion stimulated by secretin (1. C.U./Kg/h) and the octapeptide of cholecystokinin (OP-CCK 0.15 Ivy dog units/Kg/h) was studied in anaesthetized rabbits. Pancreatic blood flow remained unaffected by the action of isoproterenol; however, the administration of the beta-adrenergic agonist over an infusion of secretion an OP-CCK led to an increase in pancreatic juice flow (approximately 146% for secretin and 125% for OP-CCK) and HCO3-output (approximately 194% for secretin and 150% for OP-CCK), a potentiation being observed between the effects of secretin and isoproterenol. This kind of response, independent of vascular changes, is due to a direct action of isoproterenol on the ductular cells. Isoproterenol interferes with the action of secretin and OP-CCK in that it partially inhibits the stimulatory action of OP-CCK on the enzymatic secretion of the acinar cells in the rabbit pancreas and at the same time protein secretion decreases in the presence of secretin. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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