Effects of 4-Hydroxyantipyrine and Its 4-O-Sulfate on Antipyrine as Biodistribution Promoter.
作者:Yuhsuke OHKAWA、Miki MATSUMURA、Yuhji KUROSAKI、Masateru KURUMI、Kenji SASAKI、Taiji NAKAYAMA
DOI:10.1248/bpb.24.529
日期:——
The effects of 4-hydroxyantipyrine (4-OH), a major metabolite of antipyrine, and its 4-O-sulfate (4-S) on the pharmacokinetics of antipyrine were investigated in rats. Plasma elimination of intravenously administered antipyrine was significantly decelerated under a steady-state concentration of 4-OH but not under that of 4-S. Tissue-to-plasma concentration ratio (Kp) of antipyrine under its steady-state concentration was significantly increased in the brain and heart by the concomitant use of 4-OH, while similar use of 4-S had no effect. The enhancement of the blood-brain barrier (BBB) permeability of antipyrine caused by the concomitant use of 4-OH was believed to be concerned with the increase of the Kp value of antipyrine in the brain. These results suggested that 4-OH could be used as a biodistribution promoter.
研究了安替比林的主要代谢产物 4-羟基安替比林(4-OH)及其 4-O-硫酸盐(4-S)对大鼠体内安替比林药代动力学的影响。在 4-OH 的稳态浓度下,静脉注射安替比林的血浆消除速度明显减慢,而在 4-S 的稳态浓度下则不然。同时使用 4-OH 会明显增加大脑和心脏中安替比林在稳态浓度下的组织与血浆浓度比(Kp),而同时使用 4-S 则没有影响。同时使用 4-OH 会增强安替比林的血脑屏障(BBB)通透性,这被认为与安替比林在大脑中 Kp 值的增加有关。这些结果表明 4-OH 可用作生物分布促进剂。