Effects of atorvastatin on endothelium protection in spontaneously hypertensive rats / 浙江大学学报·医学版
Journal of Zhejiang University. Medical sciences
; (6): 355-359, 2007.
Article
em Zh
| WPRIM
| ID: wpr-271522
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effects of two different dosage of atorvastatin on endothelium protection in spontaneously hypertensive rats (SHR).</p><p><b>METHODS</b>SHRs (n=18) were randomly divided into three groups (n=6): SHR control group, 50 mg atorvastatin group and 10 mg group. Six male Wistar-Kyoto rats were selected as normal control group (WKY group). All animals were given vehicle once a day by gavage for 10 weeks. Systolic blood pressure (SBP) was measured before and after treatment with atorvastatin every 2 weeks. Plasma NO and vWF were measured by nitrate reductase method and double antibodies ELISA, respectively. Plasma lipids were also measured.</p><p><b>RESULTS</b>SBP in all SHR groups was much higher than that in WKY group before experiment (P<0.01). Compared with SHR control group, SBP significantly decreased in 50 mg atorvastatin group at 6, 8 and 10 weeks and in 10 mg atorvastatin group merely at 10 weeks (P<0.05 or P<0.01). The plasma levels of NO in SHR control group was significantly lower than those in WKY group (P<0.01). After 10 weeks, plasma NO levels in 50 mg and 10 mg atorvastatin groups were markedly higher than those in SHR control group (P<0.01 or P<0.05). The plasma levels of vWF in SHR control group was significantly higher than those in WKY group (P<0.01). After 10 weeks, plasma vWF levels in 50 mg and 10 mg atorvastatin groups were markedly lower than those in SHR control group (P<0.01). Plasma lipids in 50 mg and 10 mg atorvastatin groups were lower than those in SHR control group (P<0.05 or P<0.01).</p><p><b>CONCLUSION</b>Atorvastatin can decrease blood pressure and significantly improve endothelial function in SHR by increasing plasma NO level and decreasing plasma vWF level.</p>
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Índice:
WPRIM
Assunto principal:
Farmacologia
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Pirróis
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Ratos Endogâmicos SHR
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Ratos Endogâmicos WKY
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Sangue
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Pressão Sanguínea
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Fator de von Willebrand
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Endotélio Vascular
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Distribuição Aleatória
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Atorvastatina
Limite:
Animals
Idioma:
Zh
Revista:
Journal of Zhejiang University. Medical sciences
Ano de publicação:
2007
Tipo de documento:
Article