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논문 기본 정보

자료유형
학술저널
저자정보
Lee, Jeom-Sook (Department of Food and Nutrition, Sunchon National University) Choi, Myung-Sook (Department of Food Science and Nutrition, Kyungpook National University) Seo, Kown-Il (Department of Food and Nutrition, Sunchon National University) Lee, Jin (Department of Food and Nutrition, Sunchon National University) Lee, Hae-In (Department of Food and Nutrition, Sunchon National University) Lee, Ju-Hye (Department of Food and Nutrition, Sunchon National University) Kim, Myung-Joo (Department of Hotel Cuisine, Suseong College) Lee, Mi-Kyung (Department of Food and Nutrition, Sunchon National University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제37권 제6호
발행연도
2014.1
수록면
773 - 782 (10page)

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This study investigated anti-diabetic activity of a concentrated saponin fraction from Platycodi radix (SK1) in C57BL/KsJ-db/db mice and its underlying mechanism. Mice were fed diet with 0.5 % SK1 (w/w) for 6 weeks. SK1 significantly lowered the blood glucose and glycosylated hemoglobin levels and improved glucose and insulin tolerance. The plasma and pancreatic insulin and C-peptide levels and fecal cholesterol content were increased, whereas plasma urea nitrogen, free fatty acid and triglyceride levels were decreased by SK1 supplementation. Glucokinase (GK) activity in the liver was significantly higher in the SK1 group than the control group, whereas the glucose-6-phosphatase (G6Pase) activity was lower. SK1 significantly down-regulated GK mRNA expression compared to the control group but did not affect G6Pase and glucose transporter 2 mRNA. Phosphoenolpyruvate carboxykinase activity and mRNA levels did not differ between groups. SK1 also markedly inhibited the small intestinal disaccharidases activities compared to those of control db/db mice. Furthermore, SK1 was a more effective ${\alpha}$-glucosidase inhibitor than acarbose in vitro. Overall, these findings suggest that SK1 is a potential glucose-lowering agent that functions via inhibition of carbohydrate digestive enzyme activities and modulation of glucose-regulating enzyme activities in db/db mice.

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