Osthol inhibits fatty acid synthesis and release via PPARα/γ-mediated pathways in 3T3-L1 adipocytes
2014
Zhong, Wen | Shen, Hong | Zhou, Feng | Xue, Jie | Xie, Mei-Lin
Osthol is an active constituent isolated from the fruit of Cnidium monnieri (L.) Cusson (Apiaceae), and has obvious therapeutic effect on fatty liver, but its mechanisms are not yet understood completely. One potential link between adipose tissue and fatty liver may be circulating fatty acids. In the present study, the effect of osthol on fatty acid synthesis and release in cultured 3T3-L1 adipocytes was observed. Following treatment of adipocytes with osthol, the intracellular levels of free fatty acids (FFA) and triacylglycerols as well as cultured supernatant level of FFA were decreased, and some lipogenic gene and protein expressions were also decreased, while the peroxisome proliferator-activated receptor (PPAR) α/γ mRNA expressions were increased. Osthol-reduced lipogenic gene expressions were decreased or abrogated after pretreatment with specific inhibitor(s) of PPARα and/or PPARγ.
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