A new high activity plasma cholinesterase variant.

Increased plasma cholinesterase activity and succinylcholine resistance: a genetic variant.

ارزیابی میزان آنزیم کولین استراز در شاغلین در معرض سموم فسفره

Background: Organophosphates use in agriculture and concern about their effects on human is increasing. This study was conducted to investigate the activity of blood cholinesterase in sprayers. Methods: In a descriptive and analytical cross-sectional study, 60 (30 sprayers and 30 control individuals) with age range of 29-62 years, mean age of 44.33±8.55 years were studied and the results were ...

A new succinylcholine-based assay of plasma cholinesterase.

We describe a new method for measuring the in vitro rate of hydrolysis of the muscle relaxant succinylcholine. This substrate is hydrolyzed by plasma cholinesterase (EC 3.1.1.8). The resulting choline is determined by measuring the hydrogen peroxide formed on its oxidation by choline oxidase (EC 1.1.3.17). This is done by use of phenol and aminoantipyrine coupled to peroxidase, and yields an in...

RELATIONSHIP BETWEEN SUCCINYLCHOLINEINDUCED APNEA AND DIBUCAINE NUMBER IN PATIENTS WITH GENETIC DEFICIENCY OF PLASMA CHOLINESTERASE

In this study, a commercially available kit in which propionylthiocholine is used as a substrate and a dibucaine solution to determine the variants of the enzyme were utilized. Plasma cholinesterase activity of 151 patients who underwent different operations was measured during a period of six months. The mean±SD of the enzyme activity in 150 patients was 4.39±1.17 kU/L .. Seventeen patie...

Recovery of residual curarization after red blood cell transfusion

BACKGROUND The muscle-relaxing effects of succinylcholine are terminated via hydrolysis by plasma cholinesterase. There are multiple genetic variants of this enzyme and clinical circumstances that might influence the activity of plasma cholinesterase and eventually lead to prolonged neuromuscular blockade following succinylcholine application. CASE REPORT Here, we report a parturient woman wi...