Cannabinoidergic Regulation of the Functional State of the Heart. The Role of the Autonomic Nervous System

A. V. Krylatov, L. N. Maslov, I. F. Nam, Yu V. Bushov

Research output: Contribution to journalArticle

Abstract

Cannabinoids have been shown to induce long-lasting hypotension and bradycardia, which can be preceded by transient tachycardia and hypertension associated with activation of vanilloid TRPV1 receptors. Prolonged hypotension and bradycardia are consequences of the stimulation of cannabinoid CB1 receptors. Endogenous cannabinoids are not involved in regulating heart rate or arterial blood pressure in intact animals. Cannabinoid-induced bradycardia results from the sympatholytic and vagotonic actions of cannabinoids. Prolonged hypotension results from cannabinoid-induced vasorelaxation. Activation of presynaptic CB1 receptors located on sympathetic terminals innervating the heart and arteries leads to inhibition of noradrenaline release from these terminals. Endogenous cannabinoids have cardioprotective effects in coronary occlusion, inhibiting sympathetic influences on the myocardium. Anandamide, which activates TRPV1 receptors, can induce the Bezold–Jarisch reflex. Stimulation of presynaptic CB1 receptors promotes reductions in CGRP (calcitonin gene-related peptide) release from the afferent terminals of the vagus nerve. Stimulation of vanilloid TRPV1 receptors, conversely, induces CGRP release from the sensory fibers of the vagus nerve. The brainstem nuclei may take part in the cardiovascular effects of cannabinoids seen on i.v. administration of CB agonists.

Original languageEnglish
Pages (from-to)331-340
Number of pages10
JournalNeuroscience and Behavioral Physiology
Volume49
Issue number3
DOIs
Publication statusPublished - 15 Mar 2019

Fingerprint

Cannabinoids
Autonomic Nervous System
Cannabinoid Receptor CB1
Bradycardia
Hypotension
Presynaptic Receptors
TRPV Cation Channels
Vagus Nerve
Calcitonin Gene-Related Peptide
Sympatholytics
Coronary Occlusion
Tachycardia
Vasodilation
Brain Stem
Reflex
Myocardium
Norepinephrine
Arterial Pressure
Arteries
Heart Rate

Keywords

  • autonomic nervous system
  • endogenous cannabinoids
  • heart

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Cannabinoidergic Regulation of the Functional State of the Heart. The Role of the Autonomic Nervous System. / Krylatov, A. V.; Maslov, L. N.; Nam, I. F.; Bushov, Yu V.

In: Neuroscience and Behavioral Physiology, Vol. 49, No. 3, 15.03.2019, p. 331-340.

Research output: Contribution to journalArticle

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