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Evaluation of a Portable Microchip Electrophoresis Fluorescence Detection System for the Analysis of Amino Acid Neurotransmitters in Brain Dialysis Samples

机译:便携式微芯片电泳荧光检测系统用于分析脑透析样品中氨基酸神经递质的评估

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A portable fluorescence detection system for use with microchip electrophoresis was developed and compared to a benchtop system. Using this system, six neuroactive amines commonly found in brain dialysate (arginine, citrulline, taurine, histamine, glutamate, and aspartate) were derivatized offline with naphthalene-2,3-dicarboxaldehyde/cyanide, separated electrophoretically, and detected by fluorescence. The limits of detection for the analytes of interest were 50 – 250 nM for the benchtop system and 250 nM – 1.3 μM for the portable system, both of which were adequate for most analyte detection in brain microdialysis samples. The portable system was then demonstrated for the detection of the same six amines in a rat brain microdialysis sample.
机译:开发了一种用于微芯片电泳的便携式荧光检测系统,并将其与台式系统进行了比较。使用该系统,将脑透析液中常见的六种神经活性胺(精氨酸,瓜氨酸,牛磺酸,组胺,谷氨酸和天冬氨酸)用萘-2,3-二甲苯基甲醛/氰化物离线衍生化,进行电泳分离,并通过荧光进行检测。对于台式系统,目标分析物的检测限为50 – 250 nM,对于便携式系统,目标物的检测限为250 nM – 1.3μM,这两者都足以满足大脑微透析样品中大多数分析物的检测要求。然后证明了该便携式系统可用于检测大鼠脑微透析样品中的相同六种胺。

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