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. 1980 May;69(1):35–40. doi: 10.1111/j.1476-5381.1980.tb10880.x

Influence of beta-adrenoceptor blocking agents on the turnover rate of cardiac and splenic noradrenaline in rats.

J M Alexandre, C Chevillard
PMCID: PMC2044186  PMID: 6103727

Abstract

1 The effects of (+) and (+/-)-propranolol, pindolol, alprenolol, practolol, acebutolol and bretylium were studied on the turnover rate of noradrenaline in heart and spleen of rats. 2 Bretylium (8 mg/kg) greatly reduced the turnover rate of noradrenaline in both organs. 3 (+)-Propranolol (4 and 10 mg/kg) also diminished the turnover rate of noradrenaline, but its effects were smaller than those of (+/-)-propranolol (4 and 10 mg/kg). 4 Pindolol (300 micrograms/kg) greatly increased the turnover rate of noradrenaline; this effect was especially important in the spleen. 5 Alprenolol (4 and 10 mg/kg) acebutolol (20 and 40 mg/kg) practolol (10 mg/kg) did not produce any significant change. 6 These effects are compatible with the view that beta-adrenoceptor blocking agents may affect noradrenaline release in different manners: anaesthetic properties of some of these drugs and blockade of beta 2 prejunctional adrenoceptors produce a diminished release of transmitter, whereas the intrinsic sympathomimetic action of pindolol causes the opposite effect.

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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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