Author:
Virani Amitkumar,Dholaria Nirali,Mohd Hana,Albayati Nubul,Michniak-Kohn Bozena
Abstract
AbstractThis research study involves the development of an olanzapine (OLZ) formulation using various chemical penetration enhancers (CPEs) for transdermal delivery. The aim of this study was to obtain the initial data needed about the effects of various CPEs on the skin permeation of OLZ. The effects of the selected CPEs were examined by studying the permeation profiles of OLZ from formulations applied to human cadaver skin samples. A control formulation of OLZ in propylene glycol (PG) was prepared and compared against formulations containing chemical penetration enhancers. Five different CPEs (oleic acid (OA), cineole (Cin), isopropyl alcohol (IPA), Tween 80 (T80), and N-methyl pyrrolidone (NMP)) at 5% w/w were individually added to the formulation containing OLZ in PG. The in vitro permeation study was carried out using vertical Franz diffusion cells mounted with human cadaver skin. Samples from the receptor compartment of the cell were collected at 2 h, 4 h, 8 h, 12 h, and 24 h at room temperature. The amount (µg/cm2) of permeated drug (OLZ) was measured using a validated HPLC method, and the percentage (%) of OLZ permeated was calculated. Based on the data obtained, different CPEs were found to have a significant impact on OLZ permeability compared to the control formulation. The most effective chemical penetration enhancer was shown to be 5% w/w OA with a 3.3-fold increase in enhancement ratio (ER). The rank of order for the highest concentration of OLZ permeated from each of CPE containing formulation was as follows: OA > Cin > IPA > T80 > NMP. The most effective chemical penetration enhancer was OA but the cytotoxic study using human fibroblast cells suggests that OA may not be safe due to its cytotoxic effects.
Publisher
Springer Science and Business Media LLC
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