利用醇质体制剂增强伏立康唑的皮肤沉积和递送。
Enhanced skin deposition and delivery of voriconazole using ethosomal preparations.
机构信息
a Department of Pharmaceutics , Faculty of Pharmacy, Minia University , Minia , Egypt.
b Department of Pharmaceutics , Faculty of Pharmacy, Assiut University , Assiut , Egypt , and.
出版信息
J Liposome Res. 2018 Mar;28(1):14-21. doi: 10.1080/08982104.2016.1239636. Epub 2016 Oct 19.
Despite its broad-spectrum antifungal properties, voriconazole has many side effects when administered systemically. The aim of this work was to develop an ethosomal topical delivery system for voriconazole and test its potential to enhance the antifungal properties and skin delivery of the drug. Voriconazole was encapsulated into various ethosomal preparations and the effect of phospholipid and ethanol concentrations on the ethosomes properties were evaluated. The ethosomes were evaluated for drug encapsulation efficiency, particle size and morphology and antifungal efficacy. Drug permeability and deposition were tested in rat abdominal skin. Drug encapsulation efficiency of up to 46% was obtained and it increased with increasing the phospholipid concentration, whereas the opposite effect was observed for the ethanol concentration. The ethosomes had a size of 420-600 nm and negative zeta potential. The particle size of the ethosomes increased by increasing their ethanol content. The ethosomes achieved similar inhibition zones against Aspergillus flavus at a 2-fold lower drug concentration compared with drug solution in dimethyl sulfoxide. The ex vivo drug permeability through rat abdominal skin was ∼6-fold higher for the ethosomes compared with the drug hydroalcoholic solution. Similarly, the amount of drug deposited in the skin was higher for the ethosomes and was dependent on the ethanol concentration of the ethosomes. These results confirm that voriconazole ethosomal preparations are promising topical delivery systems that can enhance the drug antifungal efficacy and improve its skin delivery.
尽管伏立康唑具有广谱抗真菌特性,但全身给药时会产生许多副作用。本工作旨在开发伏立康唑的醚质体局部递药系统,并考察其增强药物抗真菌性能和经皮传递的潜力。将伏立康唑包封于各种醚质体制剂中,并考察磷脂和乙醇浓度对醚质体性质的影响。评价了醚质体的药物包封效率、粒径和形态以及抗真菌功效。在大鼠腹部皮肤中测试了药物渗透性和沉积量。药物包封效率最高可达 46%,且随磷脂浓度的增加而增加,而乙醇浓度则表现出相反的效果。醚质体的粒径为 420-600nm,具有负 ζ 电位。随着乙醇含量的增加,醚质体的粒径增大。与二甲基亚砜中的药物溶液相比,含药醚质体在较低药物浓度下对黄曲霉的抑菌圈大小相似。与含药醇水溶液相比,含药醚质体在大鼠腹部皮肤中的药物透皮量增加约 6 倍。同样,醚质体中药物的沉积量更高,且取决于醚质体的乙醇浓度。这些结果证实,伏立康唑醚质体制剂是有前途的局部递药系统,可增强药物的抗真菌功效并改善其皮肤传递。