Effects of Green Tea on Blood Pressure and Hypertension-induced Cardiovascular Damage in Spontaneously Hypertensive Rat

Three groups of spontaneously hypertensive rats were administered by gavage with distilled water (control group), low-dose green tea (LGT, 0.2 g/kg BW day) and high-dose green tea (HGT, 1.0 g/kg BW day) for 4 weeks, during which systolic blood pressure (SBP) was measured weekly by non-invasive tail-...

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Published inFood science and biotechnology Vol. 20; no. 1; pp. 93 - 98
Main Authors Liang, Yue-Rong, Ma, Shi-Cheng, Luo, Xian-Yang, Xu, Jing-Yi, Wu, Ming-Yan, Luo, Yi-Wen, Zheng, Xin-Qiang, Lu, Jian-Liang
Format Journal Article
LanguageKorean
Published 2011
Subjects
aldosterone
mitochondria
calcitonin gene-related peptide
malondialdehyde
systolic blood pressure
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Summary:Three groups of spontaneously hypertensive rats were administered by gavage with distilled water (control group), low-dose green tea (LGT, 0.2 g/kg BW day) and high-dose green tea (HGT, 1.0 g/kg BW day) for 4 weeks, during which systolic blood pressure (SBP) was measured weekly by non-invasive tail-cuff method. At the end of experiment, left ventricular hypertrophy index (LHVI) and plasma biochemical indicators were determined, and ultrastructures of myocardium and aortic vascular smooth muscle cells were observed by transmission electron microscopy (TEM). The results show that green tea gavage suppressed the increase in SBP, along with decline in levels of plasma nitric oxide, aldosterone, malondialdehyde, and LHVI, but increased levels of plasma creatinine, calcitonin gene-related peptide, and glutathione peroxidase in a dose dependant manner. Green tea had no effect on plasma total cholesterol. TEM shows that green tea gavage protected mitochondria of left ventricular myocardium and aortic vascular smooth muscle cells from damage.
Bibliography:KISTI1.1003/JNL.JAKO201116450100097
ISSN:1226-7708
2092-6456