AbstractPhytosterols are known to lower total blood cholesterol and low‐density lipoprotein (LDL) cholesterol. However, low solubility of phytosterols in edible oils and their high melting point limit their use in food products. Esterification of phytosterols with fatty acids will render them higher solubility in oils and lowers their melting points. In this work, caprylic acid (C8:0) was selected for the esterification process because it serves as a rapid energy source with little or no deposition in the body and is often recommended by nutritionists for the treatment of candidiasis due to its antimicrobial properties. Here optimization of enzymatic synthesis of phytosteryl caprylates using response surface methodology (RSM) was investigated. The optimization process used a face‐centred central composite design (CCD) and under optimized conditions (9.25 h, 2.15 substrate mole ratio, and 7.93% enzyme load) the resultant conversion yield was 98%.
[EN] COATINGS FOR IMPLANTABLE MEDICAL DEVICES COMPRISING CHOLESTEROL<br/>[FR] REVÊTEMENTS POUR DISPOSITIFS MÉDICAUX IMPLANTABLES COMPRENANT DU CHOLESTÉROL
申请人:MIV THERAPEUTICS INC
公开号:WO2008077247A1
公开(公告)日:2008-07-03
[EN] Disclosed herein are solid film coatings for implantable medical devices comprising a solid film covering at least a portion of the device. The solid film comprises: at least one lipid selected from cholesterol and cholesterol derivatives, at least one additional solid lipid other than cholesterol and cholesterol derivatives, and a therapeutically effective amount of at least one pharmaceutically active agent. Also disclosed herein are methods of preparing film coatings and methods of treating diseases with the implantable devices. [FR] La présente invention concerne des revêtements en pellicule solide pour dispositifs médicaux implantables comprenant une pellicule solide recouvrant au moins une partie du dispositif. La pellicule solide comprend : au moins un lipide choisi parmi le cholestérol et des dérivés du cholestérol; au moins un lipide solide supplémentaire autre que le cholestérol et les dérivés du cholestérol; et une quantité thérapeutiquement efficace d'au moins un agent pharmaceutiquement actif. Cette invention concerne également des procédés de préparation de revêtements pelliculaires et des méthodes de traitement de maladies utilisant ces dispositifs implantables.