ZHANG Yun1, LIU Chuan-kang1, LUO Cong1, et al. Study of superparamagnetic streptomycin sulfate PLA-PEG block polymer microspheres in vivo release[J]. Journal of Chongqing Medical University, 2011,36(5):592-594.
ZHANG Yun1, LIU Chuan-kang1, LUO Cong1, et al. Study of superparamagnetic streptomycin sulfate PLA-PEG block polymer microspheres in vivo release[J]. Journal of Chongqing Medical University, 2011,36(5):592-594. DOI: 10.13406/j.cnki.cyxb.2011.05.041.
Objective:To study in vivo release of superparamagnetic streptomycin sulfate PLA-PEG copolymer microsphere(block spSPM).Methods:Superparamagnetic magnetic nanoparticles Fe3O4 sodium oleate were prepared with chemical deposition;spSPM was prepared with complex emulsification(W/O/W).10 rabbits were randomly divided into spSPM experimental group and streptomycin control group.After gluteal injection respectively
animal peripheral venous blood was drawn in fixed time for the determination of the blood concentration of sulfuric acid streptomycin by using high performance liquid chromatography(HPLC).The medicine release in the animal body was compared.Results:Findings demonstrated significant difference between the experimental group and the control group in the in vivo release of the medicine(P<0.05).Conclusion:Superparamagnetic streptomycin sulfate PLA-PEG block polymer microspheres show a delayed release in vivo.