Role of sinoaortic reflexes in hemodynamic patterns of natural defense behaviors in the cat.

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

Research output: Contribution to journalArticle

Abstract

To evaluate whether sinoaortic afferents contribute to the hemodynamic pattern of fighting, cardiovascular changes associated with fighting were studied in cats before and after sinoaortic denervation. Sinoaortic denervation exaggerates the decrease in heart rate, cardiac output, and arterial pressure during immobile confrontation (hissing, staring but no movement). During nonsupportive fighting (fighting with forelimbs while lying on one side) and supportive fighting ( fighting while standing on four feet) sinoaortic denervation reduces the increase in heart rate and cardiac output, minimizes the mesenteric vasoconstriction, induces a fall in arterial blood pressure, but does not affect iliac vasoconstriction or vasodilatation. The hemodynamic pattern of fighting is similarly changed by temporary inactivation of carotid sinus baroreflexes by common carotid occlusion as by chronic section of sinoaortic nerves. It is concluded that sinoaortic reflexes play an important role in the cardiovascular patterns accompanying natural fighting. They favor cardiac action and allow a marked visceral vasoconstriction to occur, thus minimizing or preventing a fall in blood pressure during emotional behavior.

Original languageEnglish
JournalThe American journal of physiology
Volume240
Issue number3
Publication statusPublished - Mar 1981

Fingerprint

Denervation
Vasoconstriction
Reflex
Cats
Hemodynamics
Cardiac Output
Arterial Pressure
Heart Rate
Carotid Sinus
Forelimb
Baroreflex
Vasodilation
Blood Pressure

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Baccelli, G., Albertini, R., Del Bo, A., Mancia, G., & Zanchetti, A. (1981). Role of sinoaortic reflexes in hemodynamic patterns of natural defense behaviors in the cat. The American journal of physiology, 240(3).

Role of sinoaortic reflexes in hemodynamic patterns of natural defense behaviors in the cat. / Baccelli, G.; Albertini, R.; Del Bo, A.; Mancia, G.; Zanchetti, A.

In: The American journal of physiology, Vol. 240, No. 3, 03.1981.

Research output: Contribution to journalArticle

Baccelli, G, Albertini, R, Del Bo, A, Mancia, G & Zanchetti, A 1981, 'Role of sinoaortic reflexes in hemodynamic patterns of natural defense behaviors in the cat.', The American journal of physiology, vol. 240, no. 3.
Baccelli, G. ; Albertini, R. ; Del Bo, A. ; Mancia, G. ; Zanchetti, A. / Role of sinoaortic reflexes in hemodynamic patterns of natural defense behaviors in the cat. In: The American journal of physiology. 1981 ; Vol. 240, No. 3.
@article{fae01a15ecc54cc196e9483ef24c425b,
title = "Role of sinoaortic reflexes in hemodynamic patterns of natural defense behaviors in the cat.",
abstract = "To evaluate whether sinoaortic afferents contribute to the hemodynamic pattern of fighting, cardiovascular changes associated with fighting were studied in cats before and after sinoaortic denervation. Sinoaortic denervation exaggerates the decrease in heart rate, cardiac output, and arterial pressure during immobile confrontation (hissing, staring but no movement). During nonsupportive fighting (fighting with forelimbs while lying on one side) and supportive fighting ( fighting while standing on four feet) sinoaortic denervation reduces the increase in heart rate and cardiac output, minimizes the mesenteric vasoconstriction, induces a fall in arterial blood pressure, but does not affect iliac vasoconstriction or vasodilatation. The hemodynamic pattern of fighting is similarly changed by temporary inactivation of carotid sinus baroreflexes by common carotid occlusion as by chronic section of sinoaortic nerves. It is concluded that sinoaortic reflexes play an important role in the cardiovascular patterns accompanying natural fighting. They favor cardiac action and allow a marked visceral vasoconstriction to occur, thus minimizing or preventing a fall in blood pressure during emotional behavior.",
author = "G. Baccelli and R. Albertini and {Del Bo}, A. and G. Mancia and A. Zanchetti",
year = "1981",
month = "3",
language = "English",
volume = "240",
journal = "American Journal of Physiology",
issn = "0363-6119",
publisher = "American Physiological Society",
number = "3",

}

TY - JOUR

T1 - Role of sinoaortic reflexes in hemodynamic patterns of natural defense behaviors in the cat.

AU - Baccelli, G.

AU - Albertini, R.

AU - Del Bo, A.

AU - Mancia, G.

AU - Zanchetti, A.

PY - 1981/3

Y1 - 1981/3

N2 - To evaluate whether sinoaortic afferents contribute to the hemodynamic pattern of fighting, cardiovascular changes associated with fighting were studied in cats before and after sinoaortic denervation. Sinoaortic denervation exaggerates the decrease in heart rate, cardiac output, and arterial pressure during immobile confrontation (hissing, staring but no movement). During nonsupportive fighting (fighting with forelimbs while lying on one side) and supportive fighting ( fighting while standing on four feet) sinoaortic denervation reduces the increase in heart rate and cardiac output, minimizes the mesenteric vasoconstriction, induces a fall in arterial blood pressure, but does not affect iliac vasoconstriction or vasodilatation. The hemodynamic pattern of fighting is similarly changed by temporary inactivation of carotid sinus baroreflexes by common carotid occlusion as by chronic section of sinoaortic nerves. It is concluded that sinoaortic reflexes play an important role in the cardiovascular patterns accompanying natural fighting. They favor cardiac action and allow a marked visceral vasoconstriction to occur, thus minimizing or preventing a fall in blood pressure during emotional behavior.

AB - To evaluate whether sinoaortic afferents contribute to the hemodynamic pattern of fighting, cardiovascular changes associated with fighting were studied in cats before and after sinoaortic denervation. Sinoaortic denervation exaggerates the decrease in heart rate, cardiac output, and arterial pressure during immobile confrontation (hissing, staring but no movement). During nonsupportive fighting (fighting with forelimbs while lying on one side) and supportive fighting ( fighting while standing on four feet) sinoaortic denervation reduces the increase in heart rate and cardiac output, minimizes the mesenteric vasoconstriction, induces a fall in arterial blood pressure, but does not affect iliac vasoconstriction or vasodilatation. The hemodynamic pattern of fighting is similarly changed by temporary inactivation of carotid sinus baroreflexes by common carotid occlusion as by chronic section of sinoaortic nerves. It is concluded that sinoaortic reflexes play an important role in the cardiovascular patterns accompanying natural fighting. They favor cardiac action and allow a marked visceral vasoconstriction to occur, thus minimizing or preventing a fall in blood pressure during emotional behavior.

UR - http://www.scopus.com/inward/record.url?scp=0019542385&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0019542385&partnerID=8YFLogxK

M3 - Article

C2 - 7193981

AN - SCOPUS:0019542385

VL - 240

JO - American Journal of Physiology

JF - American Journal of Physiology

SN - 0363-6119

IS - 3

ER -