The Articulo-Cardiac Sympathetic Reflex in Spinalized, Anesthetized Rats
نویسندگان
چکیده
منابع مشابه
Cardiac sympathetic afferent stimulation augments the arterial chemoreceptor reflex in anesthetized rats.
Chronic heart failure (CHF) is well known to be associated with both an enhanced chemoreceptor reflex and an augmented cardiac "sympathetic afferent reflex" (CSAR). The augmentation of the CSAR may play an important role in the enhanced chemoreceptor reflex in the CHF state because the same central areas are involved in the sympathetic outputs of both reflexes. We determined whether chemical an...
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Cardiac sympathetic afferent fibers activated during coronary occlusion exert an excitatory influence on sympathetic discharge to the heart in cats after spinal cord section. The significance of this cardiocardiac sympathetic reflex response during myocardial ischemia in animals with an intact neuraxis is unknown. We studied the responses of efferent cardiac sympathetic nerve activity (CSNA), a...
متن کاملEnhanced cardiac sympathetic afferent reflex involved in sympathetic overactivity in renovascular hypertensive rats.
Sympathetic outflow is increased in hypertension. The aim of the present study was to investigate whether the cardiac sympathetic afferent reflex (CSAR) is enhanced in two-kidney one-clip (2K1C) renovascular hypertensive rats, and whether the enhanced CSAR contributes, in part, to the increased sympathetic outflow. Furthermore, the role of central angiotensin II type 1 (AT(1)) receptors in medi...
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BACKGROUND Cardiac sympathetic afferent reflex (CSAR) is a positive-feedback, sympathoexcitatory reflex. Paraventricular nucleus (PVN) is an important component of the central neurocircuitry of the CSAR. The present study is designed to determine whether endothelin-1 (ET-1) in the PVN modulates the CSAR and sympathetic activity, and whether superoxide anions are involved in modulating the effec...
متن کاملEnhanced sympathetic activity and cardiac sympathetic afferent reflex in rats with heart failure induced by adriamycin
Our previous studies have shown that the cardiac sympathetic afferent reflex is enhanced in rats with chronic heart failure (CHF) induced by coronary artery ligation and contributes to the over-excitation of sympathetic activity. We sought to determine whether sympathetic activity and cardiac sympathetic afferent reflex were enhanced in adriamycin-induced CHF and whether angiotensin II (Ang II)...
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ژورنال
عنوان ژورنال: The Journal of Physiological Sciences
سال: 2006
ISSN: 1880-6546,1880-6562
DOI: 10.2170/physiolsci.rp000705