Hypothalamic microinjection of alpha 2-adrenoceptor agonists causes greater sympathoinhibition in spontaneously hypertensive rats on high NaCl diets.


We tested the hypothesis that in NaCl-sensitive spontaneously hypertensive rats (SHR-S) maintained on high NaCl diets, sympathoinhibitory neurons in the anterior hypothalamic area display increased responsiveness to alpha 2-adrenergic receptor stimulation, giving rise to exaggerated depressor responses. Clonidine (0.6-2.5 micrograms) was microinjected… (More)


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