A rapid and simple screening method for methamphetamine in urine by radioimmunoassay using a 125I-labeled methamphetamine derivative.
作者:SEIICHI INAYAMA、YUKIKO TOKUNAGA、EIKICHI HOSOYA、TERUO NAKADATE、TETSUKICHI NIWAGUCHI、KIMIKO AOKI、SHOJI SAITO
DOI:10.1248/cpb.28.2779
日期:——
N-Carboxymethylmethamphetamine, a derivative of methamphetamine, was prepared through a new synthetic pathway from ephedrine. Specific antiserum was obtained by immunization of rabbits with the conjugate of N-carboxymethylmethamphetamine with bovine serum albumin. A radioimmunoassay procedure was established using this antibody (specific for methamphetamine) and a 125I-methamphetamine derivative. A high degree of specificity of the antibody was confirmed by testing for cross-reaction with several methamphetamine analogs, and the sensitivity was found to be 1 ng/tube. The present micro method using radioimmunoassay is highly sensitive, rapid, simple and may be useful as a micro-scale primary screening test for methamphetamine excreted in human urine, for forensic and medical purposes.
N-羧甲基甲基苯丙胺是甲基苯丙胺的一种衍生物,由麻黄碱通过一种新的合成途径制备而成。通过用 N-羧甲基甲基苯丙胺与牛血清白蛋白的共轭物对兔子进行免疫,获得了特异性抗血清。利用这种抗体(对甲基苯丙胺具有特异性)和 125I 甲基苯丙胺衍生物建立了放射免疫分析程序。通过检测该抗体与几种甲基苯丙胺类似物的交叉反应,确认了该抗体的高度特异性,并发现其灵敏度为 1 纳克/管。本放射免疫分析微量法灵敏度高、快速、简单,可作为人类尿液中甲基苯丙胺排泄物的微量初筛检测,用于法医和医疗目的。