Document Detail

Polymeric triamcinolone acetonide nanoparticles as a new alternative in the treatment of uveitis: in vitro and in vivo studies.
MedLine Citation:
PMID:  23295645     Owner:  NLM     Status:  Publisher    
The purpose of this work was to improve the efficacy of triamcinolone acetonide (TA) in the treatment of endotoxin-induced uveitis (EIU) using a polymeric nanoparticulate drug delivery system. Poly (d,l-lactide-co-glycolide) (PLGA) nanoparticles were prepared using a modified emulsification/solvent diffusion method. Processing factors affecting loading and size were also studied. After physicochemical studies including in vitro release, X-ray powder diffraction, differential scanning calorimetry and scanning electron microscopy, in vivo studies were conducted using nanoparticles sized 195 nm with 3.16% drug loading. Inflammatory factors such as flare, cell and fibrin were studied in rabbit's eye over 96 hours period, using laser flare meter and slit lamp examination. Inflammatory mediators such as NO, PGE2, cell and protein were measured quantitatively 36 hours after intravitreal injection of endotoxin in aqueous humor, and the therapeutic effects were compared in different groups. Results indicated statistically significant differences between the effect of nanoparticles in the treatment of EIU compared to microparticles of TA and prednisolone acetate (PA). There were no significant differences between the effects of TA injection and TA nanoparticles. In conclusion, sustain release biodegradable TA nanoparticles are potential new topical treatment options which can provide better patient compliance.
Araz Sabzevari; Khosro Adibkia; Hassan Hashemi; Alireza Hedayatfar; Navid Mohsenzadeh; Fatemeh Atyabi; Mohammad Hossein Ghahremani; Rassoul Dinarvand
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-4
Journal Detail:
Title:  European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V     Volume:  -     ISSN:  1873-3441     ISO Abbreviation:  Eur J Pharm Biopharm     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9109778     Medline TA:  Eur J Pharm Biopharm     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier B.V. All rights reserved.
Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran; Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical sciences, Tehran, Iran.
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