新型左心声学超声造影剂空气白蛋白微球制剂的研制

Preparation of a Newly-developed Contrast Medium for Echocardiography:Air-albumin Microsphere

目的 :对空气人血白蛋白微球制剂的制备工艺进行研究 ,并初步探讨微球形成机理。方法 :按正交设计筛选最佳制备工艺条件 ;库尔特颗粒分析仪测定最佳制备工艺条件下微球粒径 ;光、电镜考察微球外观形态。结果 :最佳制备工艺 :白蛋白生理盐水溶液浓度为5 % ,声振仪功率为9档 ,声振持续时间为60秒。结论 :通过正交试验设计 ,成功研制出含空气的白蛋白微球 。

OBJECTIVE:To study the preparation of 5% albumin microspheres by sonication and the possible mechanism of microsphere forming.METHODS:The preparation technic was optimized with orthogonal design.The microsphere diameter was measured with Coulter multisizer and the outward apperance was observed with light and electronic microscope.RESUL_TS:The optimal preparation technic was as follows:5% albumin in NS,ultrasound power at 9th grade and 60 seconds of sonication.CONCLUSION:The albumin microspheres filled with air can be successfully prepared with orthogonal design and can be effectively used in intravenous myocardial contrast echocardiography.