alpha-Adrenoceptor-mediated inhibitory effect of the sympathetic nervous system on the isoprenaline-induced increase in plasma renin concentration.
Naunyn Schmiedebergs Arch Pharmacol, 1977/8;299(1):77-82.
Meyer DK, Kempter A, Boll H, Eisenreich M, Hertting G
PMID: 198679
Impact factor: 3.195
Abstract
The importance of the sympatho-adrenal system for the isoprenaline-induced increase in plasma renin concentration was investigated in conscious rats Ganglionic blockade by trimethidinium (10 mg kg-1) increased the dose-dependent elevation of plasma renin concentration induced by isoprenaline (0.03-0.48 microgram kg-1 min-1). Also treatment of the rats with guanethidine (6 mg kg-1) or reserpine (2.5 mg kg-1, given 16 and 7 h prior to the experiments) further increased the effect of isoprenaline (0.5 microgram kg-1 min-1) on plasma renin concentration. Unilateral renal denervation combined with contralateral nephrectomy doubled the effect of the beta-sympathomimetic amine on renin release. The alpha-adrenoceptor antagonist phenoxy-benzamine (3 mg kg-1) also enhanced the effect of isoprenaline on this parameter. It is concluded that apart from a stimulation of renin release via beta-adrenoceptors the sympathetic nervous system may inhibit renin release via stimulation of alpha-adrenoceptors.
MeSH terms
Animals; Dose-Response Relationship, Drug; Guanethidine; Isoproterenol; Male; Quaternary Ammonium Compounds; Rats; Receptors, Adrenergic; Receptors, Adrenergic, alpha; Renin; Reserpine; Sympathetic Nervous System
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