Assay of Serum Cholinesterase with Succinylcholine and Propionylthiocholine as Substrates
作者:
Nabil Wakid,
Ramzi Tubbeh,
Anis Baraka,
期刊:
Anesthesiology
(OVID Available online 1985)
卷期:
Volume 62,
issue 4
页码: 509-512
ISSN:0003-3022
年代: 1985
出版商: OVID
关键词: Enzymes: cholinesterase;Measurement techniques: cholinesterase;Neuromuscular relaxants: succinylcholine
数据来源: OVID
摘要:
Serum cholinesterase (E.C. 3.1.1.8) was assayed with succinylcholine as a substrate. The reaction was coupled with choline oxidase and peroxidase in the presence of 4-aminoantipyrine and phenol to produce a red quinone dye that was measured spectro-photometrically. The method requires 25 μl of sample in a total volume of 1.0 ml. The mean activity for 35 adults of the usual genotype was 74.4 ± 28 U/l (range 24–125 U/l). Succinylcholine-sensitive individuals had activities below 18 U/l. The same serum samples also were assayed with propionylthiocholine as a substrate. Activities with the two substrates showed a coefficient of correlation of 0.980 (n = 68). However, the method using propionylthiocholine showed more overlap between the activities of succinylcholine-sensitive and insensitive individuals. Assay with succinylcholine thus may offer a more effective method of screening for sensitive individuals, since some escape detection by conventional genotyping with dibucaine and fluoride.
点击下载:
PDF
(303KB)
返 回