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May 1, 1988The Journal of PhysiologyOpen Access

Baroreceptor inputs to the nucleus tractus solitarius in the cat: postsynaptic actions and the influence of respiration.

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Key result

Stimulation of afferent nerves evoked diverse postsynaptic responses in the nucleus tractus solitarius, which were not modified by lung inflation or respiratory cycle timing.

Population

Cats (in vivo model) studying neurones in the nucleus of the tractus solitarius (NTS)

Design

Preclinical

Authors

SMSteven W. MifflinUniversity of the Incarnate WordKSK. Michael SpyerCross-Cutting CardiologyDWD. J. Withington‐WrayNational Hospital for Neurology and Neurosurgery

Discussion

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Implication

No immediate clinical implications from this animal model; leaves open the downstream site of respiratory gating in baroreflex pathways.

Structured PICO

P
Population
Cats (in vivo model) studying neurones in the nucleus of the tractus solitarius (NTS)
I
Intervention
Stimulation of carotid sinus nerve (SN), aortic nerve (AN), superior laryngeal nerve (SLN), and vagal nerve (VN), and lung inflation
O
Outcome
Postsynaptic responses (EPSP, IPSP) in NTS neuronessurrogate

Respiratory gating of the baroreceptor reflex does not occur via synaptic actions within the nucleus tractus solitarius, indicating these modifications must occur at later stages in the reflex pathway.

Cite This Study

Mifflin et al. (1988) studied this question. Afferent nerve stimulation (carotid sinus, aortic, superior laryngeal, and vagal nerves) was evaluated on Postsynaptic responses in the nucleus of the tractus solitarius. Stimulation of afferent nerves evoked diverse postsynaptic responses in the nucleus tractus solitarius, which were not modified by lung inflation or respiratory cycle timing.

synapsesocial.com/papers/6a238468412756072fa5dd89https://doi.org/10.1113/jphysiol.1988.sp017085
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Respiratory modulation of barareceptor and chemoreceptor reflexes affecting heart rate and cardiac vagal efferent nerve activity.1976 · 125 citations
  2. 2Post‐synaptic activity evoked in the nucleus tractus solitarius by carotid sinus and aortic nerve afferents in the cat.1985 · 101 citations
  3. 3The central projections of carotid baroreceptors and chemoreceptors in the cat: a neurophysiological study.1984 · 218 citations
  4. 4A calcium-activated hyperpolarization follows repetitive firing in hippocampal neurons1980 · 575 citations
  5. 5Central Nervous Integration of Cardiovascular Control1982 · 121 citations