Abstract
A new method employing HPLC, LC-MS, and hepatocyte membranes for the screening of bioactive compounds in traditional Chinese medicines (TCMs) has been proposed. We hypothesized that exposure of the TCM extracts to hepatocyte membranes should decrease the concentration of membrane-permeable compounds in the solution. Using this approach, the permeability of the compounds in Rhizoma Polygoni Cuspidati was investigated. By comparing chromatograms of samples prepared both before and after interaction with hepatocyte membranes, seven permeable compounds of Rhizoma Polygoni Cuspidati were identified. Additionally, it was found that piceid, resveratrol, emodin-8-β-d-glucoside, physcion-8-β-d-glucoside, aloe-emodin, emodin, and physcion combined specifically with hepatocyte membranes, which might indicate a useful approach for revealing the antiatherosclerotic effects of Rhizoma Polygoni Cuspidati. Therefore, the proposed method could be a good approach to predict the potential bioactivities of multiple compounds in TCMs simultaneously. Based on the significance of these results, this method could be a novel approach for identifying potentially bioactive components in other TCMs.
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