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Author Bertrand, G. ♦ Chapal, J. ♦ Puech, R. ♦ Loubatières-mariani, M. M.
Source PubMed Central
Content type Text
File Format PDF
Language English
Difficulty Level Medium
Subject Domain (in DDC) Technology ♦ Medicine & health
Abstract 1. The effects of a P2 purinoceptor agonist, adenosine 5'-O-(2-thiodiphosphate) (ADP-beta-S) have been studied on insulin secretion and flow rate of the isolated perfused pancreas of the rat. 2. In the presence of a moderately stimulating glucose concentration (8.3 mM), ADP-beta-S (4.95-495 nM) evoked a biphasic insulin response in a concentration-dependent manner. A comparison of relative potency between ADP-beta-S and adenosine 5'-triphosphate (ATP) showed that ADP-beta-S was 100 times more potent than ATP. On the other hand, in the presence of a non stimulatory glucose concentration (4.2 mM), ADP-beta-S (165 nM) did not modify the basal insulin secretion. 3. ADP-beta-S, at concentrations effective on insulin secretion and also at higher concentrations (1.65 and 16.5 microM), provoked an increase of the pancreatic flow rate in a concentration-dependent manner. 4. Our results show that ADP-beta-S is a potent insulin secretory P2 purinoceptor agonist. As it is resistant to hydrolysis it might be useful in studying the effect of activation of the P2 purinoceptor of beta cells on insulin secretion in vivo.
ISSN 00071188
Age Range above 22 year
Educational Use Research
Interactivity Type Expositive
Education Level UG and PG
Learning Resource Type Article
Publisher Date 1991-03-01
Journal British Journal of Pharmacology
Volume Number 102
Issue Number 3
Starting Page 627

Source: PubMed Central