Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 48, Issue 5, Pages 747-752Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2011.02.020
Keywords
In vitro study; Biodegradable thiolated Chitosan; Breast cancer therapy; LTZ; Hydrogel
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Local drug delivery strategies have gained momentum recently as a promising modality in cancer therapy. In order to deliver Letrozole (LTZ) at the tumor site in therapeutically relevant concentrations, acetyl-polyamidoamine (Ac-PAMAM)-thiolated chitosan (TCS) films were fabricated. LTZ could be loaded at 31% wt/wt in films, which were translucent and flexible. Physicochemical characterization of LTZ via thermal technique revealed information on solid-state properties of LTZ as well as thiolated chitosan in films. While thiolated chitosan was in amorphous form, LTZ seemed to be present in both amorphous and crystalline forms in film. The lack of formulation-induced local inflammatory responses of LTZ-acetyl-polyamidoamine (Ac-PAMAM)-thiolated chitosan (TCS) films a new paradigm for localized chemotherapy based on breast delivery systems. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
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