Détail de la notice
Titre du Document
Gentamicin-eluting bioresorbable composite fibers for wound healing applications
Auteur(s)
ZILBERMAN Meital ; GOLERKANSKY Esty ; ELSNER Jonathan J. ; ...
Résumé
New gentamicin-eluting bioresorbable core/ shell fiber structures were developed and studied. These structures were composed of a polyglyconate core and a porous poly(DL-lactic-co-glycolic acid) (PDLGA) shell loaded with the antibiotic agent gentamicin, prepared using freeze drying of inverted emulsions. These unique fibers are designed to be used as basic elements of bioresorbable burn and ulcer dressings. The investigation focused on the effects of the emulsion's composition (formulation) on the shell's microstructure, on the drug release profile from the fibers, and on bacterial inhibition. The release profiles generally exhibited an initial burst effect accompanied by a decrease in release rates with time. Albumin was found to be the most effective surfactant for stabilizing the inverted emulsions. All three formulation parameters had a significant effect on gentamicin's release profile. An increase in the polymer and organic:aqueous phase ratio or a decrease in the drug content resulted in a lower burst release and a more moderate release profile. The released gentamicin also resulted in a significant decrease in bacterial viability and practically no bacteria survived after 2 days when using bacterial concentrations of 1 X 107 CFU/mL. Thus, our new fiber structures are effective against the relevant bacterial strains and can be used as basic elements of bioresorbable drug-eluting wound dressings.
Editeur
Wiley-Blackwell
Identifiant
ISSN : 1549-3296
Source
Journal of biomedical materials research. Part A A. 2009, vol. 89, n° 3, pp. 654-666 [13 pages]
Langue
Anglais
Pour les membres de la communauté du CNRS, ce document est autorisé à la reproduction à titre gratuit.
Pour les membres des communautés hors CNRS, la reproduction de ce document à titre onéreux sera fournie sous réserve d’autorisation du Centre Français d’exploitation du droit de Copie.

Pour bénéficier de nos services (strictement destinés aux membres de la communauté CNRS (Centre National de la Recherche Scientifique), de l'ESR français (Enseignement Supérieur et Recherche), et du secteur public français & étranger) :