代谢
盐酸米托蒽醌(诺万特龙)在人和动物体内的药代动力学研究被讨论。静脉注射的诺万特龙以多指数动力学和终末半衰期从38小时到数天不等的速度从人和动物的血浆中消失。它通过广泛地进入组织而从血浆中被迅速清除;然而,重新分布回到血浆和从体内消除是缓慢的过程。在动物和人体内,诺万特龙被代谢为单羧酸和二羧酸衍生物,以及这些酸的葡萄糖醛酸苷结合物。静脉给药后,大部分组织中结合的是未改变的诺万特龙。消除过程缓慢,主要通过肾脏。与多柔比星(II)的相互作用研究表明,预先给予多柔比星可能会延长诺万特龙的半衰期,但同时给药在第一次剂量后可能不会涉及问题。
... Pharmacokinetic studies in humans and animals with mitoxantrone hydrochloride (Novantrone) are /discussed/ Intravenously administered novantrone disappears from the plasma of humans and animals with multiexponential kinetics and with a terminal half life ranging from 38 hr to several days. It is rapidly cleared from the plasma by extensive sequestration into the tissues; however, redistribution back into the plasma and elimination from the body are slow processes, In both animals and humans, novantroneis metabolized to the mono and dicarboxylic acid derivatives, as well as the glucuronide conjugates of these acids. Following IV administration, it is unchanged novantrone that binds to most tissues. Elimination is slow and predominantly via the kidney. Interaction studies with doxorubicin (II) indicate that prior administration of doxorubicin may prolong the half life of novantrone but that concurrent administration may not involve problems after the first dose.
来源:Hazardous Substances Data Bank (HSDB)