کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5142682 | 1496273 | 2017 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of non-deuterated and deuterated isopropyl myristate on the thermodynamical and structural behavior of a 2D Stratum Corneum model with Ceramide [AP]
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
CHOLTLCIPMStratum corneum lipidsCER[AP]Liquid-expanded phaseStearic acid - اسید استئاریک isopropyl myristate - ایزوپروپیل میریستاتTransdermal drug delivery - تحویل داروی ترانزیستورDeuteration - تعطیلاتPenetration enhancer - تقویت نفوذRoom temperature - دمای اتاقLangmuir monolayer - لانگموری یکنواختStratum corneum - لایه شاخی، استراتوم کورنئومTLC, Thin layer chromatography - کروماتوگرافی لایه نازکcholesterol - کلسترول
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Isopropyl myristate (IPM) is a widely used penetration enhancer in pharmaceutical formulations, however, its mechanism of action on a molecular scale is still not completely understood. Previous work using a quaternary Stratum Corneum (SC) lipid model in bulk suggested the incorporation of isopropyl myristate into the SC lipid matrix, phase separation, and perturbation of the multilamellar lipid assembly. Here, we used 2D Langmuir monolayers of a ternary SC lipid model, containing ceramide AP C18:18, stearic acid and cholesterol in a molar ratio of [1:1:0.7], respectively, to shed light on the mechanism of action of this important lipophilic penetration enhancer. To do so, the synthesis of chain deuterated isopropyl myristate was successfully performed in order to study the different coupling possibilities between the hydrogenated and deuterated IPM and the alkyl chains of the SC molecules. Our results indicate that only a small portion of IPM is able to mix with our SC model leading to a limited fluidizing effect (small increase of the wavenumber of CH2 stretching vibration, increase of the SC layer flexibility), but will be squeezed out at higher lateral pressures. Furthermore, the deuteration of IPM enhances the miscibility with this SC model, probably due to a different coupling between the alkyl chains or the alkyl and deuterated chains. Additionally, using the pure D-form of CER[AP] in the SC model amplifies the obtained results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemistry and Physics of Lipids - Volume 204, April 2017, Pages 1-9
Journal: Chemistry and Physics of Lipids - Volume 204, April 2017, Pages 1-9
نویسندگان
J.S.L. Oliveira, S. Lange, B. Dobner, G. Brezesinski,