Title : The role of prostaglandins in the alpha- and beta-adrenoceptor mediated renin release response to graded renal nerve stimulation.

Pub. Date : 1981 Jul

PMID : 6269043






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1 The role of prostaglandins in the renin release response to renal nerve stimulation (RNS) at different intensities was examined in the anaesthetized dog. Reactive Nitrogen Species renin Canis lupus familiaris
2 ), prostaglandin synthesis inhibitors, did not affect the renin release response to low level RNS but decreased the renin release response to high level RNS by 31 +/- 8% (P less than 0.01). Reactive Nitrogen Species renin Canis lupus familiaris
3 beta-1-adrenoceptor antagonist, to indomethacin or diclofenac sodium resulted in a greater reduction (68 +/- 6% P less than 0.01) of the renin release response to high level RNS compared to that produced by either drug alone. Reactive Nitrogen Species renin Canis lupus familiaris
4 Metoprolol, alone, reduced the renin release response to high level RNS by 37 +/- 14% (P less than 0.05). Reactive Nitrogen Species renin Canis lupus familiaris
5 Addition of metoprolol to phenoxybenzamine practically abolished the renal vasoconstrictor response and the renin release response to high level RNS; 94 +/- 4% (P less than 0.01). Reactive Nitrogen Species renin Canis lupus familiaris
6 These findings suggest that low level RNS results in renin release which is not dependent on prostaglandins. Reactive Nitrogen Species renin Canis lupus familiaris
7 High level RNS results in renin release which is partly mediated by beta-1-adrenoceptors and partly related to alpha-adrenoceptors mediated renal vasoconstriction. Reactive Nitrogen Species renin Canis lupus familiaris