Nutrition Research and Practice

The Korean Nutrition Society (한국영양학회)
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Sargassum coreanum extract alleviates hyperglycemia and improves insulin resistance in db/db diabetic mice

  • Park, Mi Hwa (Department of Food and Nutrition, College of Medical and Life Science, Silla University) ;
  • Nam, Young Hwa (Department of Food Science and Nutrition, Pusan National University) ;
  • Han, Ji-Sook (Department of Food Science and Nutrition & Research Institute of Ecology for the Elderly, Pusan National University)
  • Received : 2014.11.24
  • Accepted : 2015.04.13
  • Published : 2015.10.01
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Abstract

BACKGROUND/OBJECTIVES: The goal of this study was to examine the effect of Sargassum coreanum extract (SCE) on blood glucose concentration and insulin resistance in C57BL-KsJ-db/db mice. MATERIALS/METHODS: For 6 weeks, male C57BL/KsJ-db/db mice were administrated SCE (0.5%, w/w), and rosiglitazone (0.005%, w/w). RESULTS: A supplement of the SCE for 6 weeks induced a significant reduction in blood glucose and glycosylated hemoglobin concentrations, and it improved hyperinsulinemia compared to the diabetic control db/db mice. The glucokinase activity in the hepatic glucose metabolism increased in the SCE-supplemented db/db mice, while phosphoenolpyruvate carboxykinase and glucose-6-phosphatase activities in the SCE-supplemented db/db mice were significantly lower than those in the diabetic control db/db mice. The homeostatic index of insulin resistance was lower in the SCE-supplemented db/db mice than in the diabetic control db/db mice. CONCLUSIONS: These results suggest that a supplement of the SCE lowers the blood glucose concentration by altering the hepatic glucose metabolic enzyme activities and improves insulin resistance.

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References

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