Spectrophotometric Micromethod for Measuring Cholinesterase Activity in Serum or Plasma

[摘要] A simple ultraviolet method has been developed for determining serum or plasma cholinesterase activity. The cholinesterase acts on acetyl- or butyrylthiocholine to release thiocholine, which reacts with 2,2'- or 4,4'-dithiodipyridine, showing absorbance at 324 or 343 nm, respectively. The activity can be measured kinetically and also after incubation for 3 to 5 min at 20° to 37°C. A volume of 10 µl of serum or plasma is sufficient for the determination. This method is well suited for clinical investigation as well as experimental studies.

[学科分类] 过敏症与临床免疫学