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. Author manuscript; available in PMC: 2020 Oct 1.
Published in final edited form as: Biochimie. 2019 Aug 27;165:250–257. doi: 10.1016/j.biochi.2019.08.013

Fig. 3.

Fig. 3.

Induction of GLP-1 secretion by the spiroepoxide reaction intermediate formed during degradation of curcumin. STC-1 cells were treated with different concentrations of HPLC-isolated spiroepoxide or PMA for 2 h. GLP-1 was quantified in the cell supernatant by ELISA. Data represent the mean ± S.D. of 3 independent experiments. *p < 0.05 or **p < 0.005 versus control (Dunnett test).