Antihypertensive and diuretic effects of YM-09730-5, a new calcium antagonist, in stroke-prone spontaneously hypertensive rats

Koichiro Kawashima, Hamao Toda, Hisayo Oohata, Kazuko Fujimoto, Takeshi Suzuki, Osamu Inagaki

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

1. 1. Effects of consecutive administration of YM-09730-5, (3S)-1-benzyl-3-pyrrolidinyl-methyl (4S)-2,6-dimethyl-4-(m-nitrophenyl)-1,4-dihydropyridine-3,5- dicarboxylate hydrochloride, a new calcium antagonist, for 9 wk on blood pressure and urinary excretion of electrolytes were studied in stroke-prone spontaneously hypertensive (SHRSP) rats. 2. 2. YM-09730-5 (1 and 3 mg/kg per day, p.o.) prevented development of hypertension and produced a significant reduction in blood pressure from the first week of the experiment. Nicardipine (15 mg/kg per day, p.o.) produced almost the same degree of antihypertensive effect as YM-09730-5 at a dose of 3 mg/kg. 3. 3. YM-09730-5 produced significant diuresis and increased urinary excretion of electrolytes throughout the experiment. 4. 4. Chronic administration of YM-09730-5 (3 mg/kg) reduced the severity of glomerular lesions in the kidney and vasculitis in the mesenteric artery. 5. 5. These results demonstrate that YM-09730-5 is a potential antihypertensive drug with a potency about 5 times higher than that of nicardipine.

Original languageEnglish
Pages (from-to)263-266
Number of pages4
JournalGeneral Pharmacology
Volume22
Issue number2
DOIs
Publication statusPublished - 1991

ASJC Scopus subject areas

  • Pharmacology

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