川芎嗪棕榈酸酯亚微乳的制备及其药动学与脑靶向性的评价

West China Journal of Pharmaceutical Sciences(2013)

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Abstract
目的 制备2-羟甲基-3,5,6-三甲基吡嗪棕榈酸酯(HTMPP)亚微乳,并考察其在小鼠体内的药动学及脑靶向性.方法 采用星点设计-效应面法优选处方,高压均质法制备HTMPP亚微乳,HPLC法测定2-羟甲基-3,5,6-三甲基吡嗪(HTMP)的含量,DAS 2.0软件计算药动学参数.结果 制备的亚微乳平均粒径为253.2±0.26 nm,HTMPP亚微乳在血浆中的t1/2为18.58 min,为磷酸川芎嗪(TMPP)注射液的1.83倍,AUC(0-∞)为745.96 mg· L-1·min-1,为TMPP注射液的1.43倍(P<0.01);其在脑中的AUC(0-∞)为632.31 mg· L-1·min-1,为TMPP注射液的1.43倍(P<0.01).结论 以HTMP计,HTMPP亚微乳与TMPP注射液相比,生物半衰期显著延长,具有较强的脑靶向性.
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Key words
6-trimethyl pyrazine palmitate,Tetramethylpyrazine,2-Hydroxymethyl-3,Lipid emulsion,Central composite design,5,Brain targeting,Pharmacokinetics
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