Modeling respiratory-sympathetic interactions and baroreceptor reflex control
نویسندگان
چکیده
Ilya A. Rybak and Yaroslav I. Molkov Department of Neurobiology and Anatomy Drexel University College of Medicine Philadelphia, Pennsylvania, USA Julian F. R. Paton and Ana P. L. Abdala School of Physiology and Pharmacology Bristol Heart Institute University of Bristol, Bristol, UK Daniel B. Zoccal Department of Physiological Sciences Center of Biological Sciences Federal University of Santa Catarina Florianópolis, Santa Catarina, Brazil
منابع مشابه
Tonic and reflex control of the cardio-respiratory system by neurons in the ventral medulla
To investigate the channels and neurotransmitters in the ventrolateral medulla (VLM) oblongata that are responsible for the maintenance of sympathetic tone and cardio-respiratory reflex regulation. Microinjections of excitant amino acid (glutamate, 100 nl, 100 mM), calcium channel blockers, agonists and antagonists were made throughout the VLM in anaesthetized rats. Arterial blood pressure, sym...
متن کاملTonic and reflex control of the cardio-respiratory system by neurons in the ventral medulla
To investigate the channels and neurotransmitters in the ventrolateral medulla (VLM) oblongata that are responsible for the maintenance of sympathetic tone and cardio-respiratory reflex regulation. Microinjections of excitant amino acid (glutamate, 100 nl, 100 mM), calcium channel blockers, agonists and antagonists were made throughout the VLM in anaesthetized rats. Arterial blood pressure, sym...
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Sympathetic nerve activity (SNA) is modulated by respiratory activity which indicates the existence of direct interactions between the respiratory and sympathetic networks within the brainstem. Our experimental studies reveal that T(E) prolongation evoked by baroreceptor stimulation varies with respiratory phase and depends on the pons. We speculate that the sympathetic baroreceptor reflex, pro...
متن کاملCentral nervous integration of cardiovascular control.
SUMMARY In this account an attempt has been made to identify integrative interactions in the control of the cardiovascular system. Three main sites of such interaction have been considered, the nucleus of the tractus solitarius (NTS), the vagal preganglionic supply to the heart and sympathetic pre-ganglionic neurones. In the case of the NTS the extent and range of afferent inputs from cardiovas...
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Previous studies from our laboratory have shown that arterial baroreceptor reflex control of lumbar sympathetic nerve activity is blunted in the NaCl-sensitive spontaneously hypertensive rat (SHR-S) compared with either the NaCl-resistant spontaneously hypertensive rat (SHR-R) or the normotensive Wistar-Kyoto (WKY) rat. In the current study, the effect of dietary NaCl supplementation on arteria...
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تاریخ انتشار 2011