Advances in chemical constituents and pharmacological activities of plants of genus Salix / 中草药

Plants of the genus Salix L. are abundant in resources, consisting more than 520 species throughout the world. The bark, branches, leaves, and flowers of different Salix species are used in folk medicines with a long history. There are several kinds of chemical components in the Salix plants, such as flavonoids, salicylic acid and its derivatives, phenylpropanoids, terpenoids, anthraquinones and steroids, which have the pharmacological activities of anti-tumor, analgesic, anti-inflammatory, anti-oxidant, hypoglycemic, regulating the nervous system, promoting the lipid dissolution, etc. In the present paper, we summarize the research reports related with plants of the genus Salix from the databases of CNKI and PubMed from 2008 to 2018, and review the research progress of chemical components and pharmacological effects to provide references for the in-depth studies of medicinal active ingredients and their action mechanism on this genus, hoping to promote the further rational development and utilization of the Salix plants.

Analysis on pharmacokinetics-pharmacodynamics correlation of effective ingredients of Qing'e wan / 中国中药杂志

To study the pharmacokinetics of three active ingredients in Qing'e wan, namely geniposidic acid, psoralen and isopsoralen, in rats, in order to investigate their correlation in the anti-osteoporotic effect. The rats were taken blood from their eye sockets at different time points after being orally administered with raw and salt-processed Qing'e wan. Geniposidic acid, psoralen and isopsoralen in rats plasma were determined by means of UHPLC-MS/MS to draw the concentration-time curve. The proliferation rate of osteoblasts was taken as the pharmacodynamic index, and determined by MTT method to draw effect-time curve. In comparison between the effect-time curve and the concentration-time curve, the blood concentrations of geniposidic acid and psoralen were close to the peak when the cell proliferation rate reached its peak, indicating a good correlation between them. The peak blood concentration of isopsoralen was slightly lagging behind the peak of efficacy. According to the correlation analysis after fitting the effect-time curve and the concentration-time curve, salt-processed Qing'e wan had a better correlation than the raw one. The above experimental results showed that the effect-time curve and the concentration-time curve of geniposidic acid and psoralen had a good correlation, and the correlation of salt-processed Qing'e wan was better than the raw one.