PMID: 9192242May 1, 1997Paper

Cardiovascular and renal effects of the combination of felodipine and metoprolol during a high-salt and a moderate-salt diet in spontaneously hypertensive rats

Japanese Circulation Journal
E M MervaalaH Karppanen

Abstract

In the present study the influence of dietary salt on the cardiovascular and renal effects of the calcium channel blocker felodipine (1.2 mg/kg sc) and the beta 1-adrenoceptor blocking drug metoprolol (250 mg/kg po), alone and in combination, was examined in the spontaneously hypertensive rats (SHRs) in a 4-week study. In addition, the influence of different diet and drug regimens on vascular functions was assessed by measuring the vascular relaxation and contractile responses of mesenteric arterial rings in vitro at the end of the experimental period. In SHRs, a high-salt diet caused a marked rise in blood pressure, impaired the endothelium-dependent vascular relaxation responses to acetylcholine and induced left ventricular hypertrophy (LVH) and renal hypertrophy. Metoprolol had little if any effect on salt-induced changes in blood pressure, endothelium-dependent vascular relaxation or renal hypertrophy, but it partially prevented the development of salt-induced LVH. Felodipine during the high-salt diet lowered blood pressure to normotensive level and completely prevented salt-induced left ventricular and renal hypertrophy as well as endothelial dysfunction. Felodipine produced tachycardia, especially at the beginning of drug...Continue Reading

References

Aug 1, 1992·American Journal of Hypertension·F H Leenen, B Yuan
Jan 1, 1989·Clinical and Experimental Hypertension. Part A, Theory and Practice·P J ManhemJ I Robertson
Jan 1, 1988·American Journal of Hypertension·L G MeggsA I Goodman
Jul 11, 1985·European Journal of Pharmacology·M NordlanderP Thorén
Jun 1, 1972·Japanese Circulation Journal·K AokiK Okamoto
Aug 1, 1993·Journal of Hypertension·G A MacGregor, F P Cappuccio
Mar 1, 1963·Japanese Circulation Journal·K OKAMOTO, K AOKI

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