scholarly journals Reflexes from pulmonary arterial baroreceptors in dogs: interaction with carotid sinus baroreceptors

2011 ◽  
Vol 589 (16) ◽  
pp. 4041-4052 ◽  
Author(s):  
Jonathan P. Moore ◽  
Roger Hainsworth ◽  
Mark J. Drinkhill
Keyword(s):  
Carotid Sinus ◽  
Arterial Baroreceptors ◽  
Pulmonary Arterial

scholarly journals Evidence for a physiological role of pulmonary arterial baroreceptors in sympathetic neural activation in healthy humans

2020 ◽  
Vol 598 (5) ◽  
pp. 955-965 ◽  
Author(s):  
Lydia L. Simpson ◽  
Victoria L. Meah ◽  
Andrew Steele ◽  
Suman Thapamagar ◽  
Christopher Gasho ◽  
...  
Keyword(s):  
Physiological Role ◽  
Neural Activation ◽  
Arterial Baroreceptors ◽  
Healthy Humans ◽  
Pulmonary Arterial

Nutrient control of cardiac rate in infant rats: role of arterial baroreceptors

1985 ◽  
Vol 249 (4) ◽  
pp. R443-R448 ◽  
Author(s):  
M. A. Hofer
Keyword(s):  
Blood Pressure ◽  
Carotid Sinus ◽  
Nutrient Deprivation ◽  
Base Line ◽  
Cardiac Rate ◽  
Suckling Rats ◽  
Arterial Baroreceptors ◽  
Infant Rats ◽  
And Control

A surgical procedure is described for the deafferentation of carotid sinus (CS) and aortic depressor (AD) baroreceptors in 2-wk suckling rats. Baroreflex testing in unanesthetized pups showed that cardiac rate responses to acute elevations of blood pressure were reduced to less than 9% of controls after combined denervation (CSAD), 28% after AD and 47% after CS denervation at 4 h. After 24 h of nutrient deprivation, resting cardiac rates of sham operated controls fell a mean of -148 beat/min, significantly more than CS, AD, or CSAD groups (P less than 0.01). Baroreflex test responses in individuals correlated significantly with their later responses to nutrient deprivation (r = 0.67, P less than 0.01). There were no significant differences in base-line cardiac rate, systolic blood pressure, or cardiac rate during 24 h intragastric milk infusion between deafferented and control pups. These experiments suggest that arterial baroreceptors are important in the cardiovascular adjustments after nutrient deprivation in suckling rats.

Recovery of arterial pressure control after partial baroreceptor denervation in awake rabbits

1992 ◽  
Vol 263 (3) ◽  
pp. H697-H702 ◽  
Author(s):  
H. Ohsumi ◽  
A. M. Scher
Keyword(s):  
Arterial Pressure ◽  
Carotid Sinus ◽  
Control Level ◽  
Peripheral Resistance ◽  
Pressure Control ◽  
Inferior Vena Caval ◽  
Arterial Baroreceptors ◽  
Reflex Pathways ◽  
Bilateral Carotid ◽  
Central Reorganization

We examined recovery of control of heart rate (HR) and total peripheral resistance (TPR) by arterial baroreceptors after bilateral carotid sinus and aortic denervation or unilateral carotid sinus and aortic denervation in conscious rabbits. In one group of animals, HR responses to changes in mean arterial pressure (MAP) after injection of nitroglycerin or phenylephrine were measured in control studies and at 2, 5, 10, and 15 days after partial baroreceptor denervation. All denervation procedures increased MAP and HR at 2 and 5 days after denervation. Reflex sensitivity decreased to 57–67% of control on day 2 after denervation. HR responses recovered by day 10 after bilateral aortic or carotid sinus denervation; however, recovery following unilateral denervation was less complete. In a second group of animals, studied after implantation of aortic flowmeters, TPR changes following reduction in cardiac output by inferior vena caval occlusion were 49% of control responses on day 2 after denervation and returned close to control level on day 5. Controls of HR and TPR recovered substantially and were not significantly different from control 10 days after partial denervation. Recovery apparently occurred through the remaining arterial baroreceptors, possibly due to central reorganization of reflex pathways.

scholarly journals Role of the pulmonary arterial baroreceptors in the effects produced by capsaicin in the dog

1964 ◽  
Vol 170 (2) ◽  
pp. 272-285 ◽  
Author(s):  
Hazel M. Coleridge ◽  
J. C. G. Coleridge ◽  
C. Kidd
Keyword(s):  
Arterial Baroreceptors ◽  
Pulmonary Arterial
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