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Guangzhou, China

Zheng Z.-G.,Macau University of Science and Technology | Zheng Z.-G.,Consun Pharmaceutical Co. | Wang R.-S.,Consun Pharmaceutical Co. | Cheng H.-Q.,Consun Pharmaceutical Co. | And 7 more authors.
Journal of Pharmaceutical and Biomedical Analysis | Year: 2011

A novel strategy for predicting bioactive components in traditional Chinese material herb was proposed, using isolated perfused rat lung (IPL) extraction and high performance liquid chromatography\tandem mass spectrometry (HPLC-MS n) analysis. The hypothesis is that when the IPL is perfused with the extract of Saposhnikoviae Radix (ESR), the potential bioactive components in the ESR should selectively combine with the receptor or channel of lung, by changing the pH of perfused liquid, the combining components would be eluated and then detected by HPLC-ESI-MS n. Five compounds were detected in the desorption eluate of IPL; among these compounds, two potential bioactive compounds, prim-O-glucosylcimifugin (2) and 4'-O-β-d-glucosyl-5-O-methylvisamminol (4) were identified by comparing with the chromatography of the standard sample, and three other compounds, i.e. cimifugin (1), 5-O-methylvisamminol (3) and sec-O-glucosylhamaudol (5) were determined by analysis of the structure clearage characterization of mass spectrometry. The application of IPL extraction coupled with HPLC-ESI-MS n for predicting potential bioactive components of TCMs is rapid, convenient, operational, economic and reliable. © Elsevier B.V. Source


Zheng Z.-G.,Macau University of Science and Technology | Zheng Z.-G.,Consun Pharmaceutical Co. | Duan T.-T.,Macau University of Science and Technology | Duan T.-T.,Consun Pharmaceutical Co. | And 13 more authors.
Journal of Pharmaceutical and Biomedical Analysis | Year: 2013

A cell-permeable membrane, as typified by Transwell insert Permeable Supports, permit accurate repeatable invasion assays, has been developed as a tool for screening immunological active components in Smilacis Glabrae Rhizoma (SGR). In this research, components in the water extract of SGR (ESGR) might conjugate with the receptors or other targets on macrophages which invaded Transwell inserts, and then the eluate which contained components biospecific binding to macrophages was identified by HPLC-ESI-MSn analysis. Six compounds, which could interact with macrophages, were detected and identified. Among these compounds, taxifolin (2) and astilbin (4) were identified by comparing with the chromatography of standards, while the four others including 5-O-caffeoylshikimic acid (1), neoastilbin (3), neoisoastilbin (5) and isoastilbin (6), were elucidated by their structure clearage characterizations of tandem mass spectrometry. Then compound 1 was isolated and purified from SGR, along with 2 and 4, was applied to the macrophage migration and adhesion assay in HUVEC (Human Umbilical Vein Endothelial Cells) -macrophages co-incultured Transwell system for immunological activity assessment. The results showed that compounds 1, 2 and 4 with concentration of 5μM (H), 500nM (M) and 50nM (L) could remarkably inhibit the macrophage migration and adhesion (Vs AGEs (Advanced Glycation End Produces) group, 1-L, 2-H and 4-L groups: p<0.05; other groups: p<0.01). Moreover, 1 and 4 showed satisfactory dose-effect relationship. In conclusion, the application of macrophage biospecific extraction coupled with HPLC-ESI-MSn analysis is a rapid, simple and reliable method for screening immunological active components from Traditional Chinese Medicine. © 2013 Elsevier B.V. Source

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