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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Hydrophilic polymeric nanoparticles prepared from Delonix galactomannan with low cytotoxicity for ocular drug delivery

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Ogunjimi, Abayomi T. ; Melo, Shaiani M. G. ; Vargas-Rechia, Carem G. ; Emery, Flavio S. ; Lopez, Renata F. V.
Total Authors: 5
Document type: Journal article
Source: Carbohydrate Polymers; v. 157, p. 1065-1075, FEB 10 2017.
Web of Science Citations: 12

Delonix is a galactomannan polysaccharide extracted from the endosperm of Delonix regia plant. This study aims at the development of Delonix nanoparticle and assesses its potential for ocular delivery by evaluating its in-vitro stability, toxicity and cellular uptake. Fluorescent nanoparticles (BODIPY-loaded nanoparticles) were prepared by a Quality-by-Design modified nanoprecipitation technique. Optimized nanoparticles had mean sizes <240 nm, PdI <0.2 and zeta potential of <-30 mV. Mixture of surfactants with different hydrophilic-lipophilic balance controlled nanoparticle swelling. Nanoparticles, which were stable in the presence of simulated lachrymal fluid and lysozyme also sustained the release of BODIPY. In-vitro studies suggest no toxicity of the nanoparticles in concentration range of 100-1483.3 mu g/mL on retinal and corneal epithelial cells. Flow cytometry and confocal microscopy techniques showed that retinal cells but not corneal cells, uptake 18% of the nanoparticles. Therefore, Delonix nanoparticles could be a safe and promising tool for ocular drug delivery. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 14/22451-7 - Sustained drug delivery systems targeting the epithelial tissue
Grantee:Renata Fonseca Vianna Lopez
Support type: Research Projects - Thematic Grants