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Japanese

Inhibition of efferent sympathetic discharges by strospeside Yasushi Abiko 1 1Department of Pharmacology, Hokkaido University School of Medicine pp.245-249
Published Date 1963/10/15
DOI https://doi.org/10.11477/mf.2425906293
  • Abstract
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 In order to investigate the extravagal mechanism of bradycardia produced by cardiac gly-cosides, the present animal experiment was conducted using strospeside as a cardiac glyco-side in cats anesthetized with pentobarbital sodium.

 In vagotomized cats, 20-30% LD of strospeside produced slowing in the heart rate and an inhibition of the efferent discharges in the pre-and postganglionic stellate fibers. Atropin-e (0.1mg/kg) did not prevent bradycardia, nor did it modify the inhibitory effect of stros-peside on efferent discharges in the postganglionic stellate fibers in vagotomized cats.

 From the foregoing results, it was concluded that sympathetic cardiac nerves play an important role in the production of bradycardia by strospeside as an extravagal factor.


Copyright © 1963, THE ICHIRO KANEHARA FOUNDATION. All rights reserved.

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電子版ISSN 1883-5503 印刷版ISSN 0370-9531 金原一郎記念医学医療振興財団

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