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Zhang, Zhiguo; Zhang, Huizhi; Li, Bo; Meng, Xiangjian; Wang, Jiqiu; Zhang, Yifei; Yao, Shuangshuang; Ma, Qinyun; Jin, Lina; Yang, Jian; Wang, Weiqing; Ning, Guang
Nature communications, 2014-Nov-25, Letnik: 5, Številka: 1Journal Article
Obesity develops when energy intake exceeds energy expenditure. Promoting brown adipose tissue formation and function increases energy expenditure and hence may counteract obesity. Berberine (BBR) is a compound derived from the Chinese medicinal plant Coptis chinensis. Here we show that BBR increases energy expenditure, limits weight gain, improves cold tolerance and enhances brown adipose tissue (BAT) activity in obese db/db mice. BBR markedly induces the development of brown-like adipocytes in inguinal, but not epididymal adipose depots. BBR also increases expression of UCP1 and other thermogenic genes in white and BAT and primary adipocytes via a mechanism involving AMPK and PGC-1α. BBR treatment also inhibits AMPK activity in the hypothalamus, but genetic activation of AMPK in the ventromedial nucleus of the hypothalamus does not prevent BBR-induced weight loss and activation of the thermogenic programme. Our findings establish a role for BBR in regulating organismal energy balance, which may have potential therapeutic implications for the treatment of obesity.
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in: SICRIS
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