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A Sensitive and Rapid Method for Detecting Formaldehyde in Brain Tissues

机译:一种灵敏快速的脑组织甲醛检测方法

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摘要

The existing methods for detecting formaldehyde (FA) in brain samples are expensive and require sophisticated experimental procedures. Here, we established a highly sensitive and selective spectrophotometric method, which is based on a reaction in which FA reacts with colorless reagent 4-amino-3-penten-2-one (Fluoral-P) to produce a yellow compound, 3,5-diacetyl-1,4-dihydrolutidine (DDL), which can be detected by a spectrophotometer at 420 nm at room temperature. The sensitive response time point was found to be at the first hour, and the optimal pH of derivative reaction was pH 6.0. The limit of detection (LOD) and the limits of quantization (LOQ) for detecting FA were 0.5 μM and 2.5 μM, respectively. Using this method, an abnormally high level of FA was detected in both the brains of FA-injected mice and autopsy hippocampus tissues from patients with Alzheimer's disease. This finding suggests that the modified Fluoral-P method is effective for measuring levels of FA in the brains.
机译:用于检测脑样本中甲醛(FA)的现有方法价格昂贵,并且需要复杂的实验程序。在这里,我们建立了一种高度灵敏的选择性分光光度法,该方法基于FA与无色试剂4-氨基-3-戊烯-2-酮(Fluoral-P)反应生成黄色化合物3,5的反应。 -二乙酰基1,4-二氢卢剔啶(DDL),可用分光光度计在室温下于420 nm进行检测。发现敏感的响应时间是在第一个小时,衍生反应的最佳pH为pH 6.0。用于检测FA的检出限(LOD)和定量限(LOQ)分别为0.5μM和2.5μM。使用这种方法,在注射了FA的小鼠的大脑和来自阿尔茨海默氏病患者的尸检海马组织中均检测到异常高水平的FA。这一发现表明,改良的Fluoro-P方法可有效测量大脑中FA的水平。

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