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Controllable delivery of hydrophilic and hydrophobic drugs from electrospun poly(lactic‐ co ‐glycolic acid)/mesoporous silica nanoparticles composite mats
Author(s) -
Song Botao,
Wu Chengtie,
Chang Jiang
Publication year - 2012
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.32785
Subject(s) - rhodamine b , plga , mesoporous silica , drug delivery , materials science , composite number , glycolic acid , nanoparticle , chemical engineering , electrospinning , kinetics , controlled release , mesoporous material , lactic acid , chemistry , nanotechnology , polymer , organic chemistry , composite material , photocatalysis , catalysis , physics , quantum mechanics , biology , bacteria , engineering , genetics
Abstract Co‐delivery of several drugs has been regarded as an alternative strategy for achieving enhanced therapeutic effect. In this study, a co‐delivery system based on the electrospun poly(lactic‐ co ‐glycolic acid) (PLGA)/mesoporous silica nanoparticles (MSNs) composite mat was designed for the co‐encapsulation and prolonged release of one hydrophilic and one hydrophobic drug simultaneously. MSNs were chosen to load the hydrophobic model drug fluorescein (FLU) and hydrophilic model drug rhodamine B (RHB), respectively (named as RHB‐loaded MSNs and FLU‐loaded MSNs). Two kinds of drug‐loaded MSNs were incorporated into the polymer matrix to form a fibrous structure by blending electrospinning. The effect of the weight ratios for the two kinds of drug‐loaded MSNs and the initial PLGA concentrations on the drug release kinetics were systematically investigated. The results showed that both model drugs RHB and FLU maintained sustained delivery with controllable release kinetics during the releasing period, and the release kinetics was closely dependent on the loading ratios of two drug‐loaded MSNs and the initial PLGA concentrations in the composite mats. The results suggest that the co‐drug delivery system may be used for wound dressing that requires the combined therapy of several kinds of drugs. © 2012 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2012.