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. 1981 Sep;12(3):375–380. doi: 10.1111/j.1365-2125.1981.tb01229.x

Effect of propranolol on noradrenaline kinetics in patients with essential hypertension.

M Esler, G Jackman, P Leonard, H Skews, A Bobik, G Jennings
PMCID: PMC1401797  PMID: 7295467

Abstract

1 The rates of noradrenaline spillover to, and removal from, plasma were measured in ten patients with essential hypertension treated with propranolol, to ascertain if long-term administration of this drug reduces sympathetic nervous system tone. 2 The plasma clearance of noradrenaline fell with propranolol, leading to a small rise in the mean plasma noradrenaline concentration. Sympathetic nervous activity in treated patients cannot be reliably gauged from plasma noradrenaline values because these are distorted by the reduction in noradrenaline clearance. 3 There was no consistent effect on noradrenaline spillover rates, which fell in six patients, but rose in the remaining four. The magnitude of the antihypertensive response was unrelated to these changes in noradrenaline release. During propranolol treatment, noradrenaline spillover rates were in every case within the normal range, much higher than in patients treated with the known sympathetic nervous systems suppressant, clonidine. 4 The principal mode of antihypertensive action of propranolol is something often than central suppression of sympathetic tone or pre-synaptic inhibition of noradrenaline release.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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