甾体激素的紫外光谱褶合变换可视化指纹谱鉴别研究

目的:考察注射用复方氨苄西林钠的药代动力学特征。方法:HPLC法检测注射家兔后不同时间血浆的氨苄西林与丙磺舒药代动力学参数。结果:以氨苄西林钠计,注射用复方氨苄西林钠300 mg/kg组能够显著的增加氨苄西林半衰期,由(23±10)min增至(31±15) min,AUC由(8．5±0．9)mg/(h·mL)增至(6．2±0．8) mg/(h·mL),注射用复方氨苄西林钠120 mg/kg组氨苄西林AUC由(2．8±0．9)mg/(h·mL)增至(5．7±1．0)mg/(h·mL),注射用复方氨苄西林钠50 mg/kg组氨苄西林AUC由(0．7±0．2)mg/(h·mL)增至(1．5±0．3)mg/(h·mL)(P＜0．05或P＜0．01)。结论:注射用复方氨苄西林钠具有增强注射用氨苄西林钠活性的作用。

Study on convolution transform and visualization of ultraviolet spectroscopic information of steroid hormones

Objective:To establish a new analytical method for the identification of steroid hormones.Methods:Convolution trans- form combined with information visualization techniques were employed in the data mining of ultraviolet spectrum,resulting in the fin- gerprint spectrum of certain compounds.The similarity coefficient of fingerprint spectrum based on cosine algorithm was further used in the identification of 23 steroid hormones,ie.prednisolone,betamethasone,pregnendione,etc.,after the method was validated.Re- suits :The method showed acceptable precision and ruggedness.There were large differences between the similarity coefficients of differ- ent types of steroid hormones.The unsaturated bond contributed greatly to the differences between the similarity coefficients of same types of steroid hormones,while the side chain or its esterification had relatively small effect on the similarity coefficients.Conclusion: Convolution transform combined with information visualization techniques broadens the application of ultraviolet spectrum in the pharma- ceutical identification.