ABSTRACT
Objective:To study the preventive effect of Sanguisorba officinalis on renal fibrosis by observing the influence of San-guisorba officinalis tannins extract (STE) on the proliferation of human renal epithelia (HK-2) induced by transforming growth factor-β1 ( TGF-β1 ) . Methods:HK-2 cells were cultured in DMEM medium with high glucose containing 10% fetal bovine serum. The cul-tured cells were divided into 5 groups, including the blank control group, TGF-β1 group (5 ng· ml-1 TGF-β1), intervention group 1 (5 ng·ml-1 TGF-β1 +12. 5μg·ml-1 STE), intervention group 2 (5 ng·ml-1 TGF-β1 +25μg·ml-1 STE) and intervention group 3(5 ng·ml-1 TGF-β1 +50 μg·ml-1 STE). The changes of cell morphology were observed under an inverted microscope and the in-fluence of SET on the cell proliferation was detected by CCK8 assay. Results: TGF-β1 could significantly induce the proliferation of HK-2 and promote the cell fibrosis with significant difference when compared with the control group (P<0. 05). However, after trea-ted with STE, the cell proliferation was inhibited obviously (P<0. 05) and the cells morphology tended to be normal in a dose-depend-ent manner. Conclusion:STE can inhibit the proliferation of HK-2 and prevent renal fibrosis to some extent.
ABSTRACT
Objective:To identify the tannin-related constituents in the extracts of pomegranate peel by HPLC-ESI-MS. Methods:The separation was performed on a Kromasil C18 column (250 mm × 4. 6 mm,5 μm) with the mobile phase of water and acetonitrile. The flow rate was maintained at 1. 0 ml·min-1 and the detection wavelength was set at 256nm. The samples were analyzed in negative modes. Results:Five tannin-related constituents including gallic acid, punicalin,punicalagin,corilagin and ellagic acid were identified from the extracts of pomegranate peel. Conclusion:The new method is accurate and rapid. It can be used to identify the tannin-related constituents in pomegranate peel and provide new ideas for the research of active components in traditional Chinese medicine as well.