Open AccessOpen-loop static and dynamic characteristics of the arterial baroreflex system in rabbits and rats
Author(s) -
Toru Kawada,
Masaru Sugimachi
Publication year - 2015
Publication title -
journal of physiological sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.968
H-Index - 49
eISSN - 1880-6562
pISSN - 1880-6546
DOI - 10.1007/s12576-015-0412-5
Subject(s) - baroreflex , baroreceptor , efferent , carotid sinus , blood pressure , autonomic nervous system , medicine , sympathetic nervous system , arc (geometry) , cardiology , neuroscience , anesthesia , heart rate , psychology , afferent , engineering , mechanical engineering
The arterial baroreflex system is the most important negative feedback system for stabilizing arterial pressure (AP). This system serves as a key link between the autonomic nervous system and the cardiovascular system, and is thus essential for understanding the pathophysiology of cardiovascular diseases and accompanying autonomic abnormalities. This article focuses on an open-loop systems analysis using a baroreceptor isolation preparation to identify the characteristics of two principal subsystems of the arterial baroreflex system, namely, the neural arc from pressure input to efferent sympathetic nerve activity (SNA) and the peripheral arc from SNA to AP. Studies on the static and dynamic characteristics of the two arcs under normal physiological conditions and also under various interventions including diseased conditions are to be reviewed. Quantitative understanding of the arterial baroreflex function under diseased conditions would help develop new treatment strategies such as electrical activation of the carotid sinus baroreflex for drug-resistant hypertension.