scholarly journals Arterial Baroreceptors Sense Blood Pressure through Decorated Aortic Claws

Cell Reports ◽  
2019 ◽  
Vol 29 (8) ◽  
pp. 2192-2201.e3 ◽  
Author(s):  
Soohong Min ◽  
Rui B. Chang ◽  
Sara L. Prescott ◽  
Brennan Beeler ◽  
Narendra R. Joshi ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Arterial Baroreceptors

Does the Brain "Remember" the Absolute Blood Pressure?

Physiology ◽  
1987 ◽  
Vol 2 (1) ◽  
pp. 10-13
Author(s):  
PK Dorward ◽  
PI Korner
Keyword(s):  
Blood Pressure ◽  
Absolute Pressure ◽  
Good Information ◽  
Absolute Level ◽  
Arterial Baroreceptors ◽  
Resting Blood Pressure ◽  
Baroreceptor Reflexes ◽  
Sustained Change ◽  
The Absolute ◽  
The Brain

A sustained change in resting blood pressure causes the threshold of arterial baroreceptors to shift rapidly, within 20-30 s, in the same direction. This greatly enhances the compensation for disturbances that cause small to moderate changes in blood pressure. A corollary of rapid resetting is ambiguity about the absolute level of blood pressure. Arterial baroreceptor reflexes are good at responding to changes in blood pressure, but they do not provide good information about absolute pressure.

Reflex Control of Blood Pressure and Heart Rate by Arterial Baroreceptors and by Cardiopulmonary Receptors in the Unanaesthetized Cat

1985 ◽  
Vol 3 (4) ◽  
pp. 327-335 ◽  
Author(s):  
Agustin J. Ramirez ◽  
Giovanni Bertinieri ◽  
Luca Belli ◽  
Anita Cavallazzi ◽  
Marco Di Rienzo ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Arterial Baroreceptors ◽  
Reflex Control ◽  
Cardiopulmonary Receptors

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.

Cardiopulmonary-Arterial Baroreceptor Interaction in Control of Blood Pressure

Physiology ◽  
1989 ◽  
Vol 4 (2) ◽  
pp. 56-59 ◽  
Author(s):  
PB Persson ◽  
H Ehmke ◽  
R Kirchheim Hartmut
Keyword(s):  
Blood Pressure ◽  
Arterial Pressure ◽  
Pressure Control ◽  
Blood Pressure Regulation ◽  
Pressure Regulation ◽  
Short Term ◽  
Arterial Baroreceptors ◽  
Pressure Changes ◽  
Arterial Baroreceptor

Arterial baroreceptors effectively buffer short-term pressure changes. However, their importance for long-term pressure control appears to be minor. In contrast, cardiopulmonary reflexes cannot sense short-term fluctuations in arterial pressure but may be involved in the long-term regulation. Knowledge of the interaction of both receptor areas may enhance our understanding of blood pressure regulation.

Arterial baroreceptors control blood pressure and vasopressin responses to hemorrhage in conscious dogs

1998 ◽  
Vol 275 (6) ◽  
pp. R1843-R1857 ◽  
Author(s):  
Terry N. Thrasher ◽  
Lanny C. Keil
Keyword(s):  
Blood Pressure ◽  
Systolic Pressure ◽  
Absolute Magnitude ◽  
Conscious Dogs ◽  
Arterial Baroreceptors ◽  
Treatment Conditions ◽  
Intact Condition ◽  
The Individual ◽  
The Relationship

The goal of this study was to determine the role of arterial baroreceptors in the reflex control of arginine vasopressin (AVP), renin, and cortisol secretion in response to a 30-ml/kg hemorrhage in conscious dogs. The hormonal responses were measured in six dogs under four treatment conditions: 1) intact, 2) acute cardiac denervation (CD) by intrapericardial infusion of procaine, 3) after sinoaortic denervation (SAD), and 4) during combined SAD + CD. In the intact condition, mean arterial pressure (MAP) was maintained at control levels until blood loss reached 20 ml/kg and the absolute magnitude of the fall at 30 ml/kg was 35 ± 10 mmHg. Similar responses were obtained during acute CD. In contrast, MAP fell earlier (at 5 ml/kg, P < 0.05) and to much lower levels in both the SAD and SAD + CD conditions. The individual slopes relating systolic pressure to plasma AVP, renin activity (PRA), and cortisol were used to compare the treatment effects using a 2 × 2 factorial analysis. There was a significant ( P < 0.01) effect of SAD on the slope relating AVP to systolic pressure but no effect of CD and no SAD × CD interaction. In contrast, there was no effect of either SAD or CD on the relationship between PRA or plasma cortisol and systolic pressure. These results indicate that maintenance of blood pressure and the normal pattern of AVP secretion during hemorrhage depend on intact arterial baroreceptor reflexes.

Sign in / Sign up

Export Citation Format

Share Document