Did you mean: pressoreceptors
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The American Journal of Physiology Apr 1951
Topics: Autonomic Nervous System; Blood Pressure; Blood Pressure Determination; Humans; Pressoreceptors
PubMed: 14829585
DOI: 10.1152/ajplegacy.1951.165.1.158 -
The American Journal of Physiology Jan 1987Influences of sinoaortic and vagally innervated vascular pressoreceptors on excitatory splenic and renal sympathetic responses to splenic receptor stimulation were...
Influences of sinoaortic and vagally innervated vascular pressoreceptors on excitatory splenic and renal sympathetic responses to splenic receptor stimulation were investigated in anesthetized cats. These experiments demonstrated that these pressoreceptors have little apparent effect on the magnitude of splenic nerve responses to splenic receptor stimulation by capsaicin, bradykinin, or congestion. In contrast, activation of these pressoreceptors attenuated renal nerve responses to splenic receptor stimulation. Influences of sinoaortic and vagally innervated receptors on tonic sympathetic nerve activity also were evaluated. Stimulation of these receptors by small increases in arterial pressure (15-21 mmHg) caused equivalent inhibition of splenic and renal nerve activity; large increases (50-66 mmHg) caused significantly greater inhibition of renal than splenic nerve activity. These results illustrate that excitatory renal and splenic sympathetic responses to splenic receptor stimulation are not suppressed equally by pressoreceptor activation, vascular pressoreceptors can have greater inhibitory influences on tonic renal than splenic nerve activity, and vascular pressoreceptor influences on sympathetic reflexes are similar to those on tonic nerve activity.
Topics: Animals; Blood Pressure; Bradykinin; Capsaicin; Cats; Electric Stimulation; Heart Rate; Kidney; Pressoreceptors; Reflex; Spleen; Sympathetic Nervous System; Synaptic Transmission; Vagotomy
PubMed: 3028166
DOI: 10.1152/ajpregu.1987.252.1.R26 -
Arquivos Brasileiros de Cardiologia Aug 2011A large body of evidence has suggested the existence of a reflex network that becomes hyperactive secondary to musculoskeletal alterations that occur in heart failure... (Review)
Review
A large body of evidence has suggested the existence of a reflex network that becomes hyperactive secondary to musculoskeletal alterations that occur in heart failure (HF) syndrome. Together with sympathoinhibitory cardiovascular reflexes, suppressed in the presence of the syndrome, heart failure can contribute to physical exercise intolerance. The hyperactivation of signals originated from receptors located in skeletal muscles (mechanoreceptors - metaboreceptors) is a recently proposed hypothesis to explain the origin of fatigue and dyspnea symptoms in HF. In HF, other alterations in the reflex control system, which are not mutually exclusive, contribute to dyspnea. The inappropriate stimulation of the arterial baroreceptors, with the consequent lack of inhibition of the muscle metaboreflex and carotid chemoreflex unloading and the increase in the renal vasoconstriction with angiotensin II release can also be considered. Although the functional alterations of the reflexes were used independently to illustrate the sympathetic excitation observed in HF, the interaction between these reflexes under normal and pathological conditions, especially its contribution to the sympathoexcitatory state found in HF, has not been broadly investigated. Therefore, questions about a possible association between the muscle receptors (mechano and metaboreceptors) in the genesis of the ergoreflex exacerbation, observed in HF, remain. Thus, the objective of this review was to integrate the knowledge on the mechano and metaboreflex (ergoreflex) in HF syndrome, as well as to clarify the influence of HF drug therapy on the ergoreflex.
Topics: Chemoreceptor Cells; Exercise Tolerance; Heart Failure; Humans; Muscle Fatigue; Muscle, Skeletal; Oxygen Consumption; Pressoreceptors; Reflex; Syndrome
PubMed: 21670895
DOI: 10.1590/s0066-782x2011005000072 -
News in Physiological Sciences : An... Feb 1993A new approach to the study of arterial baroreflexes was developed for use during the National Aeronautics and Space Administration Spacelab Life Sciences-1 Space... (Review)
Review
A new approach to the study of arterial baroreflexes was developed for use during the National Aeronautics and Space Administration Spacelab Life Sciences-1 Space Shuttle mission. This method holds promise as a means to characterize the vagal limb of human baroreflex responses comprehensively and efficiently.
Topics: Adaptation, Physiological; Baroreflex; Carotid Sinus; Humans; Hypotension, Orthostatic; Neck; Pressoreceptors; Pressure; Research Design; Space Flight; Weightlessness
PubMed: 11538169
DOI: 10.1152/physiologyonline.1993.8.1.7 -
Current Hypertension Reports May 2014Hypertension has wide (30-45 %) prevalence in the general population and is related to important increases in overall cardiovascular morbidity and mortality. Despite... (Review)
Review
Hypertension has wide (30-45 %) prevalence in the general population and is related to important increases in overall cardiovascular morbidity and mortality. Despite lifestyle modifications and optimal medical therapy (three drugs, one being diuretic), about 5-20 % of hypertensives are affected by resistant hypertension. Chronic high blood pressure has adverse effects on the heart and other organs such as the kidneys and vasculature. Renal sympathetic denervation and baroreceptor stimulation are invasive approaches initially investigated to treat resistant hypertension. Their pleiotropic effects appear promising in cardiovascular remodeling, heart failure and arrhythmias and could potentially affect cardiovascular morbidity and mortality.
Topics: Animals; Antihypertensive Agents; Blood Pressure; Cardiovascular System; Humans; Hypertension; Pressoreceptors; Sympathectomy
PubMed: 24633844
DOI: 10.1007/s11906-014-0430-3 -
Expert Review of Cardiovascular Therapy 2015With respect to paired internal organs, we commonly think that these are symmetrical and have identical physiological functions. This, however, appears not to be the...
With respect to paired internal organs, we commonly think that these are symmetrical and have identical physiological functions. This, however, appears not to be the case. A particular organ where asymmetry comes to expression is the baroreceptor system. Clinical data in patients with resistant hypertension who are treated with device-based baroreceptor activation clearly show that there are functional differences between the left and the right baroreceptor systems. This has implications for our understanding of certain diseases.
Topics: Blood Pressure; Humans; Hypertension; Pressoreceptors
PubMed: 26106932
DOI: 10.1586/14779072.2015.1049533 -
Trends in Cognitive Sciences Jan 2016Mental processes depend upon a dynamic integration of brain and body. Emotions encompass internal physiological changes which, through interoception (sensing bodily... (Review)
Review
Mental processes depend upon a dynamic integration of brain and body. Emotions encompass internal physiological changes which, through interoception (sensing bodily states), underpin emotional feelings, for example, cardiovascular arousal can intensify feelings of fear and anxiety. The brain is informed about how quickly and strongly the heart is beating by signals from arterial baroreceptors. These fire in bursts after each heartbeat, and are quiet between heartbeats. The processing of fear stimuli is selectively enhanced by these phasic signals, and these inhibit the processing of other types of stimuli including physical pain. Behavioural and neuroimaging studies detail this differential impact of heart signals on the processing of salient stimuli, and add to knowledge linking rhythmic activity in brain and body to perceptual consciousness.
Topics: Brain; Fear; Heart; Humans; Pressoreceptors
PubMed: 26628111
DOI: 10.1016/j.tics.2015.10.005 -
Clinical and Experimental Pharmacology... Jan 19971. Arterial baroreceptor denervation produces acute hypertension, but chronically denervated animals have an average arterial pressure that is similar to that of... (Review)
Review
1. Arterial baroreceptor denervation produces acute hypertension, but chronically denervated animals have an average arterial pressure that is similar to that of baroreceptor intact animals. 2. Although cardiopulmonary baroreceptors and renal compensations have been suggested to mediate the restoration of a normal average arterial pressure in sino-aortic denervated rats, such mechanisms are inconsistent with the available data. 3. At present the processes involved in the restoration and long-term maintenance of a normal average arterial pressure in chronic baroreceptor denervated animals are not known. An understanding of the regulation of arterial pressure that occurs in the absence of arterial baroreceptor reflexes may provide important new insights into the mechanisms underlying the long-term regulation of arterial pressure.
Topics: Animals; Blood Pressure; Denervation; Heart Conduction System; Kidney; Lung; Models, Biological; Pressoreceptors; Rats; Sympathectomy
PubMed: 9043810
DOI: 10.1111/j.1440-1681.1997.tb01787.x -
Acta Oto-laryngologica Mar 1993We quantified the effect of vision, pressoreceptor function and proprioception on the postural stability at different ages. Altogether 212 healthy volunteers (ages from... (Comparative Study)
Comparative Study
We quantified the effect of vision, pressoreceptor function and proprioception on the postural stability at different ages. Altogether 212 healthy volunteers (ages from 6 to 90 years) were examined by using a computerised force platform. The sway velocity (SV) was measured with eyes open and eyes closed during quiet stance on a bare platform and a foam plastic covered surface. In addition, to study the proprioceptive system, pseudorandom vibration perturbation was applied on the calf muscles. The SV showed a U-shaped curve: the children and the oldest swayed most. Equilibrium was most stable around 50 years. The visual system was of most importance for balance control in the old. The children were sensitive of pressoreceptor and proprioceptive perturbation, indicating the importance of these systems for their postural control.
Topics: Adult; Age Factors; Female; Humans; Male; Middle Aged; Postural Balance; Posture; Pressoreceptors; Proprioception
PubMed: 8475724
DOI: 10.3109/00016489309135778 -
BMJ (Clinical Research Ed.) May 1989
Topics: Humans; Pressoreceptors; Shock
PubMed: 2502287
DOI: 10.1136/bmj.298.6685.1449-b