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KMID : 0665220100230030392
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Korean Journal of Food and Nutrition
2010 Volume.23 No. 3 p.392 ~ p.398
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Improvements Caused by Silk Sericin Extract Derived from Silkworm in Blood Glucose and Lipid Concentration in Diabetic Rats
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Kim Han-Soo
Seong Jong-Hwan
Lee Young-Guen
Xie Cheng Lian
Shin Ji-Moon
Yoon Ho-Dong
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Abstract
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The objective of this study was to assess improvements caused by silk sericin extract in blood glucose and lipid concentrations in the sera of streptozotocin(STZ, 55 mg/kg B.W., I.P. injection)-induced diabetic rats fed on experimental diets for 5 weeks. Serum concentrations of blood glucose, total cholesterol, atherosclerotic index, LDL, LDL-cholesterol, free cholesterol, cholesteryl ester ratio, triglyceride(TG) and phospholipids(PL) were remarkably higher in the diabetic group(group BSW) and STZ(I.P.)-plus-silk sericin extract group(group ESS) than in the control group(group CG, basal diet-plus-water). However, the serum concentrations of blood glucose, total cholesterol, atherosclerotic index, LDL, LDL-cholesterol, free cholesterol, cholesteryl ester ratio, TG and PL were lower in the ESS group than in the BSW group, whereas the ratio of HDL-cholesterol concentration to total cholesterol and HDL-cholesterol concentration in the ESS group were higher than in the BSW group. The activities of alkaline phosphatase(ALP) and aminotransferase(AST, ALT) in serum were lower in the ESS group than in the diabetic BSW group. The results shown above suggested that silk sericin extract effectively improves blood glucose and lipid concentrations in the sera of STZ-induced diabetic rats.
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KEYWORD
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diabetes, silk sericin, blood glucose, lipid concentrations, ALP, aminotransferase
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