Z R Zhang1, J X Wang, J Lu. 1. School of Pharmacy, Sichuan University, Chengdu 610041, China.
Abstract
AIM: To optimize the preparation of 3', 5'-dioctanoyl-5-fluoro-2'-deoxyuridine pharmacosomes (DO-FUdR-PS) by using central composite design. METHODS: DO-FUdR-PS was prepared by a thin-layer ultrasonication technique. The effects of drug phosphatidycholine ratio, pluronic F-68 concentration (%, w/v) and glycerol tristearate (%, w/v) concentration on the mean particle size, entrapment ratio (ER) and drug loading (DL) were investigated. A second-order polynomial equation was fitted to the data and the resulting model was used to predict the response in the optimal region. RESULTS: All the investigated response variables were found to be highly dependent on the formulation variables. Under the optimized conditions, the mean particle size, ER and DL of DO-FUdR-PS were 76 nm, 97.49% and 31.44%, respectively, which highly agreed with the predicted values. CONCLUSION: Central composite design was successfully used to optimize the preparation of DO-FUdR-PS.
AIM: To optimize the preparation of 3', 5'-dioctanoyl-5-fluoro-2'-deoxyuridine pharmacosomes (DO-FUdR-PS) by using central composite design. METHODS:DO-FUdR-PS was prepared by a thin-layer ultrasonication technique. The effects of drug phosphatidycholine ratio, pluronic F-68 concentration (%, w/v) and glycerol tristearate (%, w/v) concentration on the mean particle size, entrapment ratio (ER) and drug loading (DL) were investigated. A second-order polynomial equation was fitted to the data and the resulting model was used to predict the response in the optimal region. RESULTS: All the investigated response variables were found to be highly dependent on the formulation variables. Under the optimized conditions, the mean particle size, ER and DL of DO-FUdR-PS were 76 nm, 97.49% and 31.44%, respectively, which highly agreed with the predicted values. CONCLUSION: Central composite design was successfully used to optimize the preparation of DO-FUdR-PS.