ISSN:
1440-1681
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Medicine
Notes:
〈list xml:id="l1" style="custom"〉1The age-related changes in mean arterial pressure (MAP), heart rate (HR), and baroreflex sensitivity (BRS) were studied in spontaneously hypertensive rats (SHR) and Wistar-Kyoto (WKY) rats from 4 to 20 weeks of age.2Intra-arterial blood pressure (BP) was continuously recorded for 24 h in conscious, freely moving rats. Twenty-four hour MAP and HR were calculated by an online computer. Baroreflex sensitivity was measured by phenylephrine infusion.3In SHR, BRS was significantly lower than in WKY as early as 4-5 weeks, at which time MAP in SHR was only slightly raised. During subsequent weeks, rapid increase in MAP occurred in SHR, in association with progressive bradycardia.4It was concluded that a reduced BRS may be detected in young prehypertensive SHR and this impairment of BRS may be central in origin.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1440-1681.1989.tb02999.x
