کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2501195 1557327 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of drug loading and type of ointment base on the in vitro performance of acyclovir ophthalmic ointment
موضوعات مرتبط
علوم پزشکی و سلامت داروسازی، سم شناسی و علوم دارویی علوم دارویی
پیش نمایش صفحه اول مقاله
Influence of drug loading and type of ointment base on the in vitro performance of acyclovir ophthalmic ointment
چکیده انگلیسی

The availability of in vitro performance tests such as in vitro drug release testing (IVRT) and in vitro permeation testing (IVPT) are critical to comprehensively assure consistent delivery of the active component(s) from semisolid ophthalmic drug products. The objective was to study the impact of drug loading and type of ointment base on the in vitro performance (IVRT and IVPT) of ophthalmic ointments using acyclovir as a model drug candidate. The in vitro drug release for the ointments was evaluated using a modified USP apparatus 2 with Enhancer cells. The transcorneal permeation was carried out using rabbit cornea on modified vertical Franz cells. The drug retention in cornea (DRC) was also determined at the end of transcorneal drug permeation study. The in vitro drug release, transcorneal drug permeation as well as DRC exhibited a proportional increase with increasing drug loading in the ointment. On comparing the in vitro drug release profile with transcorneal permeation profile, it appears that drug release from the ointment is controlling acyclovir transport through the cornea. Furthermore, enhanced in vitro transcorneal permeation relative to the in vitro drug release underscores the importance of the interplay between the physiology of the ocular tissue and ointment formulation. The results indicated that IVRT and IVPT could be used to discriminate the impact of changes in drug load and formulation composition of ophthalmic ointments.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Pharmaceutics - Volume 495, Issue 2, 30 November 2015, Pages 783–791
نویسندگان
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