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Title of Journal: J Nanopart Res

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Abbravation: Journal of Nanoparticle Research

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Springer Netherlands

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DOI

10.1007/978-3-642-31454-4_39

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1572-896X

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Emulsioncore and polyelectrolyteshell nanocapsul

Authors: Marek Piotrowski Krzysztof Szczepanowicz Danuta Jantas Monika Leśkiewicz Władysław Lasoń Piotr Warszyński
Publish Date: 2013/10/10
Volume: 15, Issue: 11, Pages: 2035-
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Abstract

The emulsioncore and polyelectrolytecoated nanocapsules designed as waterinsoluble neuroprotective drug delivery system were synthesized using layerbylayer saturation method The isopropyl myristate was used as oil phase and docusate sodium salt as emulsifier For the polyelectrolyte shell preparation synthetic polyelectrolytes cationic PDADMAC PAH and PLL and anionic PGA were used The particle size and zeta potential of nanocapsules were characterized by the dynamic light scattering The average size of synthesized nanocapsules ranged from ~80 to ~100 nm Zeta potential values ranged from less than approximately −30 mV for the polyanion layers to greater than approximately +30 mV for the polycation layers Biocompatibilities of the synthesized nanocarriers were evaluated against SHSY5Y human neuroblastoma cells using various biochemical assays The results obtained show that synthesized nanocapsules coated with PLL and PGA were nontoxic to SHSY5Y cells and they were used as nanocarriers for model neuroprotective drug a calpain inhibitor MDL 28170 The neuroprotective action of the encapsulated MDL 28170 against hydrogen peroxideinduced oxidative stress cytotoxicity was evaluated in the same cell line The results showed that nanoencapsulated form of MDL 28170 were biocompatible and protected SHSY5Y cells against the H2O2 05 mM/24 hinduced damage in 20–40 times lower concentrations than those of the same drug added directly to the culture medium These data suggest that the nanoscale carriers of neuroprotective drugs might serve as novel promising therapeutic agents for oxidative stressrelated neurodegenerative processesThis study was cofinanced by the Interdisciplinary PhD Studies “Molecular sciences for medicine” cofinanced by the European Social Fund within the Human Capital Operational Programme the Polish National Science Centre grant no DEC2011/03/N/ST5/04808 and the Marian Smoluchowski Krakow Research Consortium a leading National Research Centre KNOW supported by the Ministry of Science and Higher Education

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