Quantification of Lidocaine and Several Metabolites Utilizing Chemical-Ionization Mass Spectrometry and Stable Isotope Labeling
作者:S.D. Nelson、W.A. Garland、G.D. Breck、W.F. Trager
DOI:10.1002/jps.2600660834
日期:1977.8
Quantification of the suspected metabolites of lidocaine in humans was carried out using the direct insertion probe and chemicalionization mass spectrometry. Deuterated analogs of the metabolites of lidocaine were added to serial human plasma and urine samples and were used as internal standards following oral administration of 250 mg of lidocaine hydrochloride monohydrate to two male subjects and
使用直接插入探针和化学电离质谱法对可疑的利多卡因代谢产物进行定量。将利多卡因代谢物的氘代类似物添加至系列人血浆和尿液样本中,并在将250 mg盐酸利多卡因一水合物口服给予两名男性受试者和将202 mg利多卡因游离碱给予一名男性受试者后,用作内标。经过0-24小时尿液样品分析后的平均结果,在用β-葡萄糖醛酸苷酶-硫酸酯酶处理之前,表明存在以下量的7种可能的代谢产物(基于游离碱的给药剂量百分比):利多卡因1.95 ; ω-乙基氨基-2,6-二甲基乙酰苯胺,4.90; ω-氨基-2,6-二甲基乙酰苯胺,0.88; 间羟基和/或对羟基利多卡因,0.73; 间和/或对羟基-ω-乙基氨基-2,6-二甲基乙酰苯胺,0.56; 2,6-二甲基苯胺,0.97; 和4-羟基-2,6-二甲基苯胺63.5。在人和恒河猴的尿液中均检测到N-乙基和N,N-二乙基甘氨酸,尽管未实现定量。