Food Science and Biotechnology

  • 제17권5호
  • /
  • Pages.947-952
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  • 2008
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  • 1226-7708(pISSN)
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  • 2092-6456(eISSN)
한국식품과학회 (Korean Society of Food Science and Technology)
권호 표지

Momordica charantia Protects against Cytokine-induced Apoptosis in Pancreatic $\beta$-Cells

  • Kim, Kyong (Food Function Research Center, Korea Food Research Institute) ;
  • Kim, Hye-Young (Food Function Research Center, Korea Food Research Institute)
  • 발행 : 2008.10.31
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초록

The unripe fruit of Momordica charantia (MC) has been shown to possess antidiabetic activity. However, the mechanism of its antidiabetic action has not been fully understood. In this study, the effects of the aqueous ethanolic extract of MC (AEE-MC) were evaluated on the apoptosis in pancreatic $\beta$-cells treated with a combination of the cytokines, interleukin (IL)-$1{\beta}$, tumor necrosis factor (TNF)-$\alpha$, and interferon (IFN)-$\gamma$. In MIN6N8 cells, the inhibitory effect of AEE-MC was significantly observed at 2 to 50 ${\mu}g/mL$: a 26.2 to 55.6% decrease of cytoplasmic DNA fragments quantified by an immunoassay. The molecular mechanisms, by which AEE-MC inhibited $\beta$-cell apoptosis, appeared to involve the inhibition on the expression of p21, Bax, and Bad, the up-regulation of Bcl-2 and Bcl-$X_L$, and the inhibition on the cleavage of caspase-9, -7, and -3 and poly (ADP-ribose) polymerase. This study suggests that MC may inhibit cytokine-induced apoptosis in $\beta$-cells and, thus, may contribute via this action to the antidiabetic influence in diabetes.

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