Comparison of the antiatherosclerotic effects of dihydropyridine calcium channel blocker and HMG-CoA reductase inhibitor on hypercholesterolemic rabbits.
Vascul Pharmacol
; 46(4): 302-8, 2007 Apr.
Article
em En
| MEDLINE
| ID: mdl-17197250
ABSTRACT
The antiatherosclerotic effects of the dihydropyridine-type calcium channel blocker, benidipine hydrochloride (benidipine), and 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitor, pravastatin sodium (pravastatin), were compared in hypercholesterolemic rabbits. Male, New Zealand white rabbits were fed a 0.5% cholesterol diet. Pravastatin (10 mg/kg) or benidipine (10 mg/kg) was orally administered once daily after start of feeding. After 8 weeks of cholesterol feeding, serum cholesterol was increased and endothelial function of thoracic aorta was impaired. Pravastatin prevented elevation of serum cholesterol and aortic tunica intima hyperplasia. Although benidipine had little effect on serum cholesterol, it significantly inhibited aortic tunica intima hyperplasia and impairment of endothelial function. Expression levels of the vascular cell adhesion molecule-1 (VCAM-1) and lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) mRNA in aorta of hypercholesterolemic rabbit were higher than those of normal rabbit. Benidipine significantly prevented upregulation of VCAM-1 mRNA expression and showed a tendency to inhibit elevation of LOX-1 mRNA expression. Pravastatin significantly prevented upregulation of both VCAM-1 and LOX-1 mRNA expression. The results demonstrate that pravastatin inhibits increase of serum cholesterol and vascular dysfunction in hypercholesterolemic rabbit. Benidipine is effective in preventing vascular hyperplasia without altering serum cholesterol levels and this may be due to inhibition of expression of VCAM-1.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Aorta Torácica
/
Di-Hidropiridinas
/
Bloqueadores dos Canais de Cálcio
/
Pravastatina
/
Inibidores de Hidroximetilglutaril-CoA Redutases
/
Aterosclerose
/
Hipercolesterolemia
Tipo de estudo:
Etiology_studies
Limite:
Animals
Idioma:
En
Revista:
Vascul Pharmacol
Assunto da revista:
ANGIOLOGIA
/
FARMACOLOGIA
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
Japão