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  • Title: Caulerpa okamurae extract inhibits adipogenesis in 3T3-L1 adipocytes and prevents high-fat diet-induced obesity in C57BL/6 mice.
    Author: Sharma BR, Kim HJ, Kim MS, Park CM, Rhyu DY.
    Journal: Nutr Res; 2017 Nov; 47():44-52. PubMed ID: 29241577.
    Abstract:
    Seaweeds are considered a potential source of antiobesity agents. Because Caulerpa, a seaweed, has been consumed for food in Japan, China, South Korea, and Australia, we hypothesized that Caulerpa okamurae may have antiobesity effects in an animal model of high-fat diet (HFD)-induced obesity in C57BL/6 mice. Herein, we found that the ethanolic extract of C okamurae (COE) significantly inhibited lipid accumulation and reduced the expression of the master regulator of adipogenesis, peroxisome proliferator-activated receptor-γ, sterol regulatory element binding protein-1c, and CCAAT/enhancer-binding protein-α in 3T3-L1 adipocytes. Moreover, COE significantly decreased body weight, fat weight, and liver weight in HFD-fed mice. This effect is comparable to that of positive control Garcinia cambogia extract, which has been approved by the Korean Food and Drug Administration as a weight loss food supplement in South Korea. Similarly, markers of weight gain such as free fatty acids, triglyceride, total cholesterol, glucose, and insulin in the plasma and free fatty acid, triglyceride, total cholesterol, and total lipid in the liver are significantly reduced in COE-treated HFD-fed mice. We found significantly reduced peroxisome proliferator-activated receptor-γ, CCAAT/enhancer-binding protein-α, fatty acid synthase, sterol regulatory element binding protein-1c, cluster of differentiation 36, and acetyl-CoA synthetase in the adipose tissue of COE-treated HFD-fed mice. In conclusion, our results demonstrated that COE is effective in preventing body weight gain and fat accumulation and reduces plasma and hepatic lipid profiles. Together, these findings suggest that C okamurae may be used as a possible treatment option for the management of obesity and associated metabolic disorders.
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