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- W2022139654 abstract "Available data suggest that drugs should be delivered to a vascular lesion at a high concentration over an extended period of time to control vascular smooth muscle cell (VSMC) proliferation. This study was undertaken to formulate a paclitaxel, an antimicrotubule agent, into a biodegradable poly (ethylene oxide)–poly(lactide/glycolide) (PEO-PLGA) nanosphere as a sustained drug delivery system and to study its effects on VSMC in culture. The paclitaxel-loaded nanospheres (PT/NS), prepared by an emulsion–solvent evaporation method, had an average diameter of ∼150 nm and showed a sustained release profile over 4 weeks. The PT/NS exhibited antiproliferative effects comparable to those observed with free paclitaxel. The cellular internalization of nanospheres was visualized using confocal fluorescence microscopy, and from a flow cytometry study the progressive cellular uptake profile, uptake inhibition at low temperature, and saturation uptake kinetics (concentration dependency) were observed. These suggest that (adsorptive) pinocytosis is a major uptake mechanism of the nanospheres. The sustained drug release profile and cellular internalization results suggest that nanospheres loaded with paclitaxel may potentially be used as an endocytizable, local sustained drug delivery system for the prevention of restenosis. © 1998 John Wiley & Sons, Inc. J Biomed Mater Res, 42, 331–338, 1998." @default.
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- W2022139654 date "1998-11-01" @default.
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- W2022139654 title "Regulation of smooth muscle cell proliferation using paclitaxel-loaded poly(ethylene oxide)-poly(lactide/glycolide) nanospheres" @default.
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- W2022139654 doi "https://doi.org/10.1002/(sici)1097-4636(199811)42:2<331::aid-jbm19>3.0.co;2-l" @default.
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