Safflower is a popular Chinese medicinal plant and Safflower injection is extensively used for the clinical treatment of cerebrovascular and cardiovascular diseases. In this study, HPLC-DAD-ESI-MSn was utilized to study the stability and degradation of the two major but chemically unstable bioactive compounds hydroxysaffior yellow A and anhydrosaffior yellow B, in Safflower injection. The impact of light irradiation, temperature, and pH on the stability of these two compounds were studied. The results showed that hydroxysafflor yellow A and anhydrosafflor yellow B could degrade at high temperature （〉60 ℃） or extreme pHs （pH ≤ 3.0 or 〉7.0）, but not under light irradiation. The common degradation product was p-coumaric acid. Chemical structures of the other degradation products were characterized by LC-MS. Hypothetical degradation pathways were proposed. In addition, ADP-induced platelet aggregation tests showed that the degradation of anhydrosaffior yellow B could reduce the anticoagulation activities of Safflower injection. Our results suggest that temperature and pH are critically important for the preparation and storage of Safflower injection.
目的:灵芝三萜类化合物是常被用于辅助性肿瘤治疗的灵芝中具有细胞毒性作用的主要成分。本研究考察灵芝总三萜和化疗药物之间的相互作用。方法:应用了两种肿瘤细胞株即人宫颈瘤HeLa细胞株和人非小细胞肺癌A549细胞株。检测了将灵芝总三萜与紫杉醇或顺铂合用时对细胞的毒性作用,并用Chou and Talalay 合用指数法判断合用的相互作用类型。结果:灵芝总三萜和紫杉醇的合用在HeLa细胞中表现为协同作用而在A549细胞中表现为加合作用。灵芝总三萜与顺铂的合用效果则依赖于该两种药物的作用强度,即当其中一种药物的作用强于另外一种时表现为拮抗作用,而当两种药物的作用相似时表现为协同作用。结论:灵芝总三萜可以促进某些化疗药物的作用。
