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Jeong, M.Y.,Park, J.,Youn, D.H.,Jung, Y.,Kang, J.,Lim, S.,Kang, M.W.,Kim, H.L.,So, H.S.,Park, R.,Hong, S.H.,Um, J.Y. W.B. Saunders Co. [etc.] 2017 Metabolism, clinical and experimental Vol.73 No.-
<P>Conclusion. This study shows that AF prevents the development of obesity in hAMSCs and mice fed an HFD and that it is also capable of stimulating the differentiation of brown adipocytes through the modulation of thermogenic genes by AMPK and PI3K/AKT. (C) 2017 Elsevier Inc. All rights reserved.</P>
Genistein protects pancreatic β cells against cytokine-mediated toxicity
Kim, E.K.,Kwon, K.B.,Song, M.Y.,Seo, S.W.,Park, S.J.,Ka, S.O.,Na, L.,Kim, K.A.,Ryu, D.G.,So, H.S.,Park, R.,Park, J.W.,Park, B.H. North-Holland 2007 Molecular and cellular endocrinology Vol.278 No.1-2
In the past few decades, the use of genistein as an anti-inflammatory agent has gained much attention. Our current study focuses on the preventive effects of genistein on cytokine-induced pancreatic β-cell damage. Treatment of RINm5F (RIN) rat insulinoma cells with interleukin (IL)-1β and interferon (IFN)-γ induced cell damage, which was correlated with nitric oxide (NO) production. Genistein completely prevented cytokine-mediated cytotoxicity and NO production, a finding that correlated well with reduced levels of the inducible form of NO synthase (iNOS) mRNA and protein. The molecular mechanism of genistein inhibition of iNOS gene expression appeared to involve the inhibition of NFκB activation. The cytokine induced increases in NFκB binding activity, nuclear p50 and p65 subunit levels, and IκBα degradation in cytosol compared to unstimulated cells; genistein abolished all of these parameters. The cytoprotective effects of genistein are also mediated through the suppression of ERK-½ and Janus kinase (JAK)/signal transducer and activator of transcription (STAT) pathways. In a second set of experiments, rat islets were used. The findings on β-cell protective effects of genistein were essentially the same as for the RIN cell data, namely genistein prevented cytokine-induced NO production, iNOS expression, ERK-½ activation, JAK/STAT activation, and impairment of glucose-stimulated insulin secretion. Collectively, these results suggest that genistein might be used to preserve functional β-cell mass.