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Clonidine suppression of bradycardia induced by giganocellular reticular nucleus in the cat

  • Jon Son Kuo
  • , Samuel H.H. Chan*
  • *Corresponding author for this work
  • National Defense Medical Center
  • Veterans General Hospital-Taipei

Research output: Contribution to journalJournal Article peer-review

11 Scopus citations

Abstract

In chloralose-urethane-anesthetized cats, intravertebral injection of clonidine (0.5-4.0 μ/kg) elicited a drastic suppression of the bradycardia induced by stimulating the gigantocellular reticular nucleus (GRN). The degree of blockage of GRN-induced cardioinhibition was related to the time course of the inherent cardiovascular effects of clonidine. It was also dependent upon the dose of the imidazoline compound and the intensity/train pulse frequency of reticular stimulation. It was suggested that the two mechanisms may interact with one another in the brainstem and possible modes of interaction were discussed.

Original languageEnglish
Pages (from-to)393-396
Number of pages4
JournalEuropean Journal of Pharmacology
Volume61
Issue number4
DOIs
StatePublished - 22 02 1980
Externally publishedYes

Keywords

  • Bradycardia
  • Cat
  • Clonidine
  • Gigantocellular reticular nucleus

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