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http://dx.doi.org/10.6116/kjh.2015.30.2.11.

Beneficial effect of Polygoni Multiflori Radix in high fructose diet-induced metabolic syndrome rat model  

Kho, Min Chul (College of Oriental Medicine, Wonkwang University)
Lee, Yun Jung (College of Oriental Medicine, Wonkwang University)
Yoon, Jung Joo (College of Oriental Medicine, Wonkwang University)
Lee, Ho Sub (College of Oriental Medicine, Wonkwang University)
Kang, Dae Gill (College of Oriental Medicine, Wonkwang University)
Publication Information
The Korea Journal of Herbology / v.30, no.2, 2015 , pp. 11-18 More about this Journal
Abstract
Objectives : Polygoni Multiflori Radix (Jeokhasuo in Korean) is a Oriental traditional herbs widely used in East Asian countries. Overconsumption of fructose results in hypertension, dyslipidemia, obesity and impaired glucose tolerance which have documented as a risk of cardiovascular diseases. This experimental study was designed to investigate the beneficial effects of an ethanol extract from Polygoni Multiflori Radix (PMR) in high-fructose (HF) diet-induced metabolic syndrome rat model. Methods : Sprague-Dawley (SD) rats were divided into three groups; Control group, receiving regular diet and tap water, HF group, and HF + PMR group both receiving supplemented with 65% fructose (n=10), respectively. The HF + PMR group initially received HF diet with PMR (100 mg/kg/day) for 8 weeks. Results : PMR significantly prevented the metabolic disturbances such as hyperlipidemia, hypertension and impaired glucose tolerance. Chronic treatment with PMR significantly decreased body weight, fat weight and adipocyte size, suggesting a role of anti-obesity effect. PMR led to improve the hyperlipidemia through the increase in HDL cholesterol level as well as the decrease in triglyceride and LDL cholesterol level. In addition, PMR suppressed adhesion molecules and endothelin-1 (ET-1) expression in aorta resulting in the decrease of hypertension. In muscle tissue, PMR significantly recovered the HF-induced insulin resistance through increase of insulin receptor substrate-1 (IRS-1), p-$AMPK{\alpha}1/2$, and p-Akt expression. PMR improved HF-induced metabolic disorders and its action was caused by energy metabolism-mediated insulin signaling activation. Conclusions : These results demonstrate that PMR may be a beneficial therapeutic for metabolic syndrome through the improvement of hyperlipidemia, obesity, insulin resistance and hypertension.
Keywords
Polygoni Multiflori Radix; Metabolic syndrome; Obesity; Hyperlipidemia; Hypertension;
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