代谢
水杨酸乙酯的代谢与[DB00945]以及其他水杨酸酯类似。水杨酸的代谢通过葡萄糖醛酸形成(产生水杨酸乙酯葡萄糖醛酸和水杨酸酚葡萄糖醛酸)、与甘氨酸结合(产生水杨尿酸)以及氧化成龙胆酸。水杨酸酚葡萄糖醛酸和水杨尿酸的形成速率在水杨酸浓度较低时容易饱和,其形成遵循米氏动力学。给予的剂量越大,达到水杨酸稳态浓度的时间越长。还有证据表明,在水杨酸代谢过程中会发生水杨尿酸形成的酶诱导。
The metabolism of glycol salicylate is similar to that of [DB00945] at other salicylates. Metabolism of salicylic acid occurs through glucuronide formation (to produce salicyl acyl glucuronide and salicyl phenolic glucuronide), conjugation with glycine (to produce salicyluric acid), and oxidation to gentisic acid. The rate of formation of salicyl phenolic glucuronide and salicyluric acid are readily saturated at low salicylic acid concentrations and their formation is described by Michaelis-Menten kinetics. The larger the dose administered, the longer it will take to reach steady-state concentrations of salicylates. There is also evidence that enzyme induction of salicyluric acid formation occurs during the metabolism of salicylates.
来源:DrugBank