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

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Issue Date
2016-01-10Author
Oborny, Nathan John
Melo Costa, Elton E.
Suntornsuk, Leena
Abreu, Fabiane
Lunte, Susan M.
Publisher
Nihon Bunseki Kagakkai
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
© 2016 by The Japan Society for Analytical Chemistry
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Show full item recordAbstract
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.
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Citation
Oborny, N. J., Costa, E. E., Suntornsuk, L., Abreu, F. C., & Lunte, S. M. (2016). Evaluation of a Portable Microchip Electrophoresis Fluorescence Detection System for the Analysis of Amino Acid Neurotransmitters in Brain Dialysis Samples. Analytical Sciences, 32(1), 35-40. doi:10.2116/analsci.32.35
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