Control of regional circulations by the sino-aortic reflexes during desynchronised sleep in the cat

G. Baccelli, R. Albertini, G. Mancia, A. Zanchetti

Research output: Contribution to journalArticle

Abstract

In the intact cat desynchronised sleep induces arterial hypotension and mesenteric vasodilatation, whereas in limb muscles vasoconstriction occurs because of the concurrent action of a spinal vasoconstriction reflex. After sino-aortic denervation arterial hypotension is exaggerated and mesenteric vasodilatation is greater, while the muscular bed of the limbs also becomes vaso-dilated rather than constricted. It is concluded that during desynchronised sleep the sino-aortic afferents act to check a central influence inhibiting vasoconstrictor tone both in the viscera and muscles: thus an excessive fall in blood pressure is prevented by avoiding a too large visceral vasodilatation and by unmasking the vasoconstrictor action of the spinal reflex in the limbs.

Original languageEnglish
Pages (from-to)523-528
Number of pages6
JournalCardiovascular Research
Volume12
Issue number9
Publication statusPublished - 1978

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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    Baccelli, G., Albertini, R., Mancia, G., & Zanchetti, A. (1978). Control of regional circulations by the sino-aortic reflexes during desynchronised sleep in the cat. Cardiovascular Research, 12(9), 523-528.