Modeling of Controlled Release of Aspirin Derivatives from Human Erythrocytes.
作者:Masahiko OHSAKO、Yasuhiro OKA、Osami TSUZUKI、Yasuhiro MATSUMOTO
DOI:10.1248/bpb.18.310
日期:——
binding positions, the hydrolyzed derivatives were released rapidly in the order of p- > m- > o-AcOHBA (ASP). The rates of derivatives were accelerated by lengthening of the side chain of the acetoxyl group (BuOHBA > PrOHBA > ASP). The rate of release of o-, m- or p-AcOHBA, BuOHBA and PrOHBA was related to hydrolysis rate in erythrocytes but not to partition coefficient (log P). In different amino acids
阿司匹林(ASP)及其衍生物(间或对乙酰氧基苯甲酸(间或对AcOHBA),邻丙酰氧基苯甲酸(PrOHBA),邻丁酰氧基苯甲酸(BuOHBA),邻乙酰氧马尿酸(AcOHPA)的运输,并通过人红细胞膜研究了邻乙酰氧基-N-苯甲酰基-β-丙氨酸(AcONBA)。尽管ASP衍生物的转运速率有所不同,但它们被转运到红细胞中,然后被水解然后释放。在不同的结合位置,水解的衍生物以p-> m-> o-AcOHBA(ASP)的顺序快速释放。通过延长乙酰氧基基团的侧链(BuOHBA> PrOHBA> ASP),可以加快衍生物的转化率。o-,间-或对-AcOHBA的释放速率,BuOHBA和PrOHBA与红细胞中的水解速率有关,但与分配系数无关(log P)。在ASP羧基的不同氨基酸中,AcONBA的释放较慢,需要大约2小时才能达到平衡。在孵育3小时后,AcOHPA的释放也较慢并逐渐增加。AcOHPA和AcONB