目的 研究草乌Aconiti Kusnezoffi Radix与瓜蒌Trichosanthis Fructus按照13个不同比例配伍后，苯甲酰新乌头碱、苯甲酰乌头原碱、苯甲酰次乌头原碱、中乌头碱、乌头碱、次乌头碱成分量的变化。方法 草乌与瓜蒌的干燥粉末，混匀，分别用10倍量蒸馏水和75%乙醇浸润1 h，提取2次，每次1 h，合并提取液，离心，取上清液。HPLC采用Welch Xtimate C₁₈（250 mm×4.6 mm，5 μm）色谱柱，乙腈-40 mmol/L乙酸铵（氨水调pH 10.0）梯度洗脱；体积流量1 mL/min，检测波长235 nm。结果 草乌与瓜蒌配伍后，随瓜蒌比例增加，药液pH值逐渐降低，单酯型生物碱总量变化不明显，而双酯型生物碱总量增加。结论 草乌与瓜蒌配伍后，从化学成分来看，双酯型生物碱类成分增加导致毒性增加。

Objective To investigate the effect of Aconiti Kusnezoffii Radix (AKR) combined with Trichosanthis Fructus (TF) in 13 different ratios on contents of benzoylmesaconitine, benzoylaconine, benzoylhypaconine, mesaconitine, aconitine, and hypaconitine. Methods The powdered AKR-TF material, mixture, was alkalized by 10 times 75% ethanol and distilled water for 1 h, respectively, and extracted regurgitantly twice (each time for 1 h). The extracts were combined and centrifuged, and the supernatant was taken. The Welch Xtimate-C₁₈ column (250 mm × 4.6 mm, 5 μm) was eluted with a mobile phase consisted of aceto-nitrile and 40 mmol/L ammonium acetate (pH value 10.0, adjusted with aqueous ammonia) and gradient elution at a flow rate of 1 mL/min. The eluent was monitored by a UV detector at 235 nm. Results After AKR combined with TF, the content of monoester-alkaloids did not change significantly. Liquid pH value gradually reduced and total quality of diester-alkaloids increased with the ratios of TF increasing. Conclusion From the view of chemical composition, the toxicity is increasing when AKR combined with TF.

国家重点基础研究发展计划（“973”计划）项目资助（2011CB505302）