Central attenuation of baroreflex precedes the development of hypertension in DOCA-salt-treated rats.

Abstract:

:To determine whether baroreflex is changed centrally before the development of hypertension in DOCA-salt treated rats, aortic depressor nerve was stimulated electrically 5 days after DOCA-salt treatment in urethane-anesthetized rats: compared with those of sham-operated control rats, blood pressure was not elevated in either awake or anesthetized rats. Aortic depressor nerve (ADN) stimulation elicited frequency-dependent vasodepressor, bradycardiac, and sympatho-inhibitory responses in both DOCA-salt-treated and control rats. However, the responses to ADN stimulation were significantly smaller in DOCA-salt-treated rats. These findings suggest that baroreflex is attenuated centrally before the development of hypertension and this attenuation may contribute to the pathogenesis of DOCA-salt hypertension.

journal_name

Am J Hypertens

authors

Takeda K,Nakamura Y,Oguro M,Kawasaki S,Hayashi J,Tanabe S,Nakata T,Lee LC,Sasaki S,Nakagawa M

doi

10.1093/ajh/1.3.23s

subject

Has Abstract

pub_date

1988-07-01 00:00:00

pages

23S-25S

issue

3 Pt 3

eissn

0895-7061

issn

1941-7225

journal_volume

1

pub_type

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