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Is there a central nervous system component to acute baroreflex resetting in rats?

Is there a central nervous system component to acute baroreflex resetting in rats? Heesch, Cheryl M., and Kirk W. Barron. Is there a central nervous system to resettg rats? Am. J. Physiol. 262 (Heart Ci. Physiol. 31): H503H510, 1992.-This study was designed to evaluate a possible central nervous system () to resettg. ne arterial baroreceptor-denervated, chloraloseurethan-anesthetized rats, a control (C) aortic nerve stimulation curve (3-5 V, 1 ms, O-64 Hz) was obtaed. Next, a constant “baroreceptor” put was delivered to the (left aortic nerve stimulation, 10 m, 10.2 t 1.5 Hz). With the fit 13 s of aortic nerve stimulation, maximum hibition of lumbar sympathetic nerve activity (LSNA) was 60 t 7.8% of basele and at 1 m it creased to 68 + 5.6% of basele. At the end of the lo-m aortic nerve stimulation, LSNA was not different from the response at 1 m (68 & 5.6% = 74 t 4.1%). Immediately after the constant stimulation (with 30 s), a test or reset () curve was obtaed (O-64 Hz). A recovery () curve was obtaed lo-20 m later. The slope of the lear portion of the curve and the stimulation frequency that produced 50% maximum hibition (E&J were compared among the three curves (C, , ,) and no significant differences http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png AJP - Heart and Circulatory Physiology The American Physiological Society

Is there a central nervous system component to acute baroreflex resetting in rats?

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Publisher
The American Physiological Society
Copyright
Copyright © 1992 the American Physiological Society
ISSN
0363-6135
eISSN
1522-1539
Publisher site
See Article on Publisher Site

Abstract

Heesch, Cheryl M., and Kirk W. Barron. Is there a central nervous system to resettg rats? Am. J. Physiol. 262 (Heart Ci. Physiol. 31): H503H510, 1992.-This study was designed to evaluate a possible central nervous system () to resettg. ne arterial baroreceptor-denervated, chloraloseurethan-anesthetized rats, a control (C) aortic nerve stimulation curve (3-5 V, 1 ms, O-64 Hz) was obtaed. Next, a constant “baroreceptor” put was delivered to the (left aortic nerve stimulation, 10 m, 10.2 t 1.5 Hz). With the fit 13 s of aortic nerve stimulation, maximum hibition of lumbar sympathetic nerve activity (LSNA) was 60 t 7.8% of basele and at 1 m it creased to 68 + 5.6% of basele. At the end of the lo-m aortic nerve stimulation, LSNA was not different from the response at 1 m (68 & 5.6% = 74 t 4.1%). Immediately after the constant stimulation (with 30 s), a test or reset () curve was obtaed (O-64 Hz). A recovery () curve was obtaed lo-20 m later. The slope of the lear portion of the curve and the stimulation frequency that produced 50% maximum hibition (E&J were compared among the three curves (C, , ,) and no significant differences

Journal

AJP - Heart and Circulatory PhysiologyThe American Physiological Society

Published: Feb 1, 1992

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