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. 1964 Feb;22(1):176–182. doi: 10.1111/j.1476-5381.1964.tb01556.x

The sympathetic mechanism in the isolated pulmonary artery of the rabbit

J A Bevan, C Su
PMCID: PMC1703897  PMID: 14126048

Abstract

The nature of postganglionic sympathetic nervous transmission to vascular muscle in vitro was studied using the recurrent cardiac nerve-pulmonary artery preparation of the rabbit. Experiments, similar to those which in other tissues have provided evidence to support a role for acetylcholine at the sympathetic postganglionic nerve-effector cell junction, were carried out. The contractile response of the isolated artery to acetylcholine was blocked completely by atropine. High concentrations of acetylcholine and of hemicholinium had no effect on the contractile response to sympathetic nerve stimulation. Physostigmine, atropine and hemicholinium were without influence on the relationship between nerve stimulus frequency and response. Yohimbine, bretylium and reserpine blocked completely the response to nerve stimulation but did not affect that to applied acetylcholine. These results support the view that transmission in this preparation at the sympathetic postganglionic nerve-effector cell junction is mediated by an adrenaline-like transmitter and provide no evidence for the view that acetylcholne is involved at this site.

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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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