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Abstract Title:

Genipin ameliorates diet-induced obesity via promoting lipid mobilization and browning of white adipose tissue in rats.

Abstract Source:

Phytother Res. 2018 Jan 29. Epub 2018 Jan 29. PMID: 29377296

Abstract Author(s):

Lili Guan, Dezheng Gong, Sirao Yang, Nana Shen, Sai Zhang, Yuchen Li, Qiong Wu, Bo Yuan, Yiping Sun, Ning Dai, Liang Zhu, Yuan Zou

Article Affiliation:

Lili Guan

Abstract:

Genipin is the major active component of Gardeniae fructus and has been shown to ameliorate diabetes and insulin resistance in rat models. In this study, we first investigated the effect of genipin on obesity and the related lipid metabolism mechanisms in diet-induced obese rats. Our results showed that genipin reduced body weight, food intake, and visceral fat mass; ameliorated dyslipidemia, glucose intolerance, insulin intolerance, adipocyte hypertrophy, and hepatic steatosis; and reduced serum tumor necrosis factor-α level in diet-induced obese rats. Quantitative real-time reverse-transcription polymerase chain reaction results further illustrated that genipin promoted lipolysis and β-oxidation of fatty acid by upregulating gene expressions of hormone-sensitive lipase and adipose triglyceride lipase in whiteadipose tissue (WAT) and peroxisome proliferator-activated receptor-α and carnitine palmitoyltransferase 1α in hepatic tissue. Moreover, genipin promoted browning of WAT by upregulating the mRNA and protein levels of uncoupling protein 1 and PRD1-BF1-RIZ1 homologous domain containing 16 in WAT. Additionally, genipin inhibited gene expressions of activin receptor-like kinase 7, tumor necrosis factor-α, and interlukin-6 in WAT. These results indicated that genipin had a potential therapeutic role in obesity, in which regulation of lipid mobilization and browning of WAT were involved.

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