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http://dx.doi.org/10.22246/jikm.2022.43.4.606

Ameliorating Effects of Geumnyeonyijin-tang Water Extract on Obesity-Induced T2DM and Related Complications in Mice  

Lee, Yoo-na (Dept. of Cardiovascular and Neurologic Diseases of Korean Internal Medicine, Daegu Korean Medical Hospital of Daegu Haany University)
Baek, Kyungmin (Dept. of Cardiovascular and Neurologic Diseases of Korean Internal Medicine, Daegu Korean Medical Hospital of Daegu Haany University)
Ku, Sae-kwang (College of Korean Medicine, Daegu Haany University)
Publication Information
The Journal of Internal Korean Medicine / v.43, no.4, 2022 , pp. 606-624 More about this Journal
Abstract
Objective: The aim of this study was to compare the effects of different doses of Geumnyeonyijin-tang (GNYJT) water extracts with those of metformin (250 mg/kg) in mild diabetic-obese mice. Methods and Results: The 48 mice were divided into 1 normal pellet diet (NFD) group and 5 high-fat diet (HFD) groups. At the end of 12 weeks of oral administration of metformin (250 mg/kg) or GNYJT water extracts (400, 200, or100 mg/kg), the effects were evaluated. The HFD control mice showed noticeable increases in body weight, adipose tissue density, fat pad weight of the periovarian and abdominal wall, and insulin, blood glucose, and HbA1c levels, with decreases in serum HDL levels. Increases in the periovarian and dorsal abdominal fat pad, regions of steatohepatitis, adipocyte hypertrophy, and hepatocyte hypertrophy were also discovered. The HFD group showed a decline in glucose levels and elevation of hepatic gluconeogenesis, suggesting an HFD-induced AMPK downregulation related to glucose dysregulation, as well as lipid metabolism related to obese insulin-resistant type II diabetes, dyslipidemia, and oxidative stress related diabetic hepatopathy (non-alcoholic fatty liver disease, NAFLD). Conclusion: Assessment of the key parameters for inhibition of diabetes and related complications in HFD-fed diabetic-obese mice demonstrated that GNYJT water extracts have favorable ameliorating effects. The effect of GNYJT was manifested through the stimulation of AMPK upregulation of related hepatic glucose enzyme activities and expression of lipid metabolism-related genes. Therefore, appropriate oral dosages of GNYJT could be promising as a new preventive candidate for controlling diabetes and related complications. Further screening of biologically active compounds, elucidation of detailed mechanisms, and more animal studies are warranted.
Keywords
Geumnyeonyijin-tang water extract; metformin; obesity; diabetes; dyslipidemia;
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