کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2084394 1545392 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling of drug release from biodegradable polymer blends
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیوتکنولوژی یا زیست‌فناوری
پیش نمایش صفحه اول مقاله
Modeling of drug release from biodegradable polymer blends
چکیده انگلیسی

Numerous mathematical models that predict drug release from degradable systems have been reported. Most of these models cater only to single step, diffusion-controlled release while a few attempt to describe bi-phasic release. All these models, however, are only applicable to drug release from single (unblended) degradable polymer systems.In this paper, we propose and test novel models for drug (notably paclitaxel) release from films made of neat poly (ε-caprolactone) PCL, neat poly (dl-lactide-co-glycolide) PLGA and their blends. The model developed for neat PCL consists of two terms: initial burst and diffusional release. On the other hand, a more complex model proposed for tri-phasic release from neat PLGA consists of burst release, degradative (relaxation-induced) drug dissolution release and diffusional release.Finally, this very first model to predict release from blend of PLGA and PCL was developed based on a heuristic approach. Drug distribution between PCL-rich and PLGA-rich phases is dictated by partition coefficient, and the overall fraction of drug release is a summation of drug released from the two phases. The proposed models exhibited good prediction of the experimental data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Pharmaceutics and Biopharmaceutics - Volume 70, Issue 3, November 2008, Pages 796–803
نویسندگان
, , ,