作者:B. Blomme、P. Lheureux、E. Gerlo、V. Maes
DOI:10.1093/jat/25.2.77
日期:2001.3.1
In methanol intoxication, increased levels of the metabolite formate are associated with metabolic acidosis and an increased risk for ocular and neurological dysfunction. A simple method for plasma formate measurement by adaptation of a manual enzymatic assay to a Cobas Mira S analyzer is presented. Six microliters of sample is incubated for 5 min with buffer containing nicotinamide-adenine dinucleotide. Fifteen microliters of a suspension of formate dehydrogenase is then added. Absorbance at 340 nm is measured every 25 s. The NADH produced when formate is oxidized is stoichiometric to the amount of formate. The method is sensitive, reproducible, and specific and has a broad measurement range. The frozen reagents are stable for at least six months, so the described method can be applied to irregular and semi-urgent requests. A recent case is reported.
在甲醇中毒中,代谢物甲酸的水平升高与代谢性酸中毒以及眼部和神经功能障碍的风险增加相关。本文介绍了一种通过将手动酶检测适配到Cobas Mira S分析仪上的简单血浆甲酸测量方法。将6微升样品与含有烟酰胺腺嘌呤二核苷酸的缓冲液孵育5分钟。然后加入15微升的甲酸脱氢酶悬浮液。每25秒测量340 nm处的吸光度。甲酸氧化时产生的NADH与甲酸的量成比例。该方法灵敏、可重复且特异,具有广泛的测量范围。冷冻试剂至少稳定六个月,因此所述方法可用于不规则和半紧急请求。报告了一个近期案例。