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자료유형
학술저널
저자정보
저널정보
대한피부과학회 Annals of Dermatology Annals of Dermatology 제24권 제1호
발행연도
2012.1
수록면
39 - 44 (6page)

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Background: S-methylmethionine sulfonium chloride was originally called vitamin U because of its inhibition of ulceration in the digestive system. Vitamin U is ubiquitously expressed in the tissues of flowering plants, and while there have been reports on its hypolipidemic effect, its precise function remains unknown. Objective: This study was designed to evaluate the anti-obesity effect of vitamin U in 3T3-L1 pre-adipocyte cell lines. Methods: We cultured the pre-adipocyte cell line 3T3L1 to overconfluency and then added fat differentiation-inducing media (dexamethasone,IBMX [isobutylmethylxanthine], insulin, indomethacin) and different concentrations (10, 50, 70, 90, 100 mM) of vitamin U. Then, we evaluated changes in the levels of triglycerides (TGs), glycerol-3-phosphate dehydrogenase (G3PDH),AMP-activated protein kinase (AMPK), adipocyte-specific markers (peroxisome proliferator-activated receptor γ[PPAR-γ], CCAAT/enhancer-binding protein α [C/EBP-α],adipocyte differentiation and determination factor 1[ADD-1], adipsin, fatty acid synthase, lipoprotein lipase) and apoptosis-related signals (Bcl-2, Bax). Results: There was a gradual decrease in the level of TGs, C/EBP-α, PPAR-γ,adipsin, ADD-1 and GPDH activity with increasing concentrations of vitamin U. In contrast, we observed a significant increase in AMPK activity with increasing levels of vitamin U. The decrease in bcl-2 and increase in Bax observed with increasing concentrations of vitamin U in the media were not statistically significant. Conclusion: This study suggests that vitamin U inhibits adipocyte differentiation via downregulation of adipogenic factors and up-regulation of AMPK activity.

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