We examined the role of aldosterone-sensitive neurons in the nucleus tractus solitarius (NTS) in the arterial baroreceptor reflex (baroreflex) function. Baroreflex sensitivity was induced by phenylephrine in high sodium-loaded rats and was significantly reduced. This baroreflex sensi-tivity was reversed by microinjection of the mineralocorticoid receptor (MR) antagonist eplerenone into the NTS. 11β-Hydroxysteroid dehydrogenase type 2 neurons and MR were also identified in the NTS. These data suggest that the aldosterone-sensitive neurons in the NTS may have an impor-tant role in baroreflex function.
- Aldosterone-sensitive nucleus tractus solitarius (NTS) neuron
- Arterial baroreceptor reflex
- Mineralocorticoid (MR) antagonist eplerenone
ASJC Scopus subject areas
- Molecular Medicine