Hypotensive effects of the lipoxygenase inhibitor phenidone in two-kidney, one clip Goldblatt hypertension.

Abstract:

:This study examined the role of the lipoxygenase (LO) pathway in the maintenance of hypertension in rats with two-kidney, one clip (2K,1C) Goldblatt hypertension. A single dose of the lipoxygenase blocker phenidone was injected intraperitoneally to 2K,1C rats during the early phase (14 days) of the development of hypertension (mean intraarterial blood pressure 137 +/- 3.9 mm Hg). Phenidone (60 mg/kg) markedly decreased arterial pressure to nadir levels of 58.9% of resting blood pressure. The maximal changes were observed 15 min after injection and the hypotensive response was sustained for at least 2 h. Plasma renin concentration (PRC) increased from 74.3 +/- 18.9 to 281.0 +/- 6.5 ng/mL/h after injection (P less than .05). Thus, the hypotensive effect of phenidone was not due to suppression of renin secretion but presumably due to inhibition of its effects. It is suggested that arachidonate metabolites of the LO pathway at the vascular bed may be involved in maintenance of high arterial pressure in 2K,1C renovascular hypertension in rat.

journal_name

Am J Hypertens

authors

Nozawa K,Tuck ML,Golub M,Eggena P,Nadler J,Stern N

doi

10.1093/ajh/2.11.853

subject

Has Abstract

pub_date

1989-11-01 00:00:00

pages

853-5

issue

11 Pt 1

eissn

0895-7061

issn

1941-7225

journal_volume

2

pub_type

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