Determination of phenobarbital in human serum by spin immunoassay.
作者:HIROTERU SAYO、MIKIO HOSOKAWA
DOI:10.1248/cpb.32.3706
日期:——
A deuterated spin-labeled derivative of phenobarbital was prepared by coupling 5-ethyl-5-phenylbarbituryl-1-butyric acid (PB-BUA) with 4-amino-1-oxyl-2, 2, 6, 6-tetramethylpiperidine-d17 and used to develop a method for measuring phenobarbital levels in human serum. Antiserum was raised in rabbits immunized with the PB-BUA/bovine serum albumin conjugate. With 2μl of serum, the sensitivity limit of the assay was 10ng of phenobarbital. Phenobarbital levels in QPAK therapeutic drug-monitoring control sera were determined by spin immunoassay (SIA). The values obtained by SIA were in good agreement with those presented by the manufacturer. The method was found to be simple and suitable for routine use, though one of the expected advantages of SIA, i.e., rapidity of analysis, was not realized.
通过将 5-乙基-5-苯基巴比妥酰-1-丁酸 (PB-BUA) 与 4-氨基-1-氧基-2, 2, 6, 6-四甲基哌啶-d17 偶联制备苯巴比妥的氘代自旋标记衍生物,用于开发测量人血清中苯巴比妥水平的方法。在用 PB-BUA/牛血清白蛋白缀合物免疫的兔子中产生抗血清。使用 2μl 血清,测定的灵敏度极限为 10ng 苯巴比妥。通过旋转免疫测定 (SIA) 测定 QPAK 治疗药物监测对照血清中的苯巴比妥水平。 SIA 获得的值与制造商提供的值非常吻合。尽管 SIA 的预期优势之一(即分析速度)并未实现,但该方法简单且适合常规使用。