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pH响应性地塞米松前药纳米粒的相关研究 苏美玲.pdf


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华西药学杂志
·   2022,37(2):130 ~ 133 noparticles


SU Meiling,YIN Zongning
Key Laboratory of Drug Targeting and Drug Delivery Systems West China School of Pharmacy Sichuan University Chengdu
( , , , ,
Sichuan P. R. China
,610041 )
Abstract OBJECTIVE METHODS
:   To prepare a pH - responsive prodrug nanoparticles drug delivery system.   The
DXM - PEI ( DP) prodrug was obtained by linking dexamethasone with low molecular weight branched polyethyleneimine by
Schiff base reaction. The structure and drug loading of the prodrug were analyzed. The prodrug was prepared into nanoparticles by
the cross - linking methods,and the related physical,chemical properties and biocompatibility of the nanoparticles were also
RESULTS
studied.   The cross - linking method fabricated DP prodrug NPs with particle size of 127 ± 4 nm,PDI value of
0. 186 ± 0. 011,and Zeta potential of 1. 0 ± 0. 1. By comparing the particle size change of DP prodrug NPs under different
pH (7. 4 and 5. 0) conditions,it showed that the DP pro

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