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- W2010062180 abstract "A piezoelectric immunosensor for sensing the low molecular weight neurotransmitter γ-aminobutyric acid (GABA), one of two major inhibitory neurotransmitters in the central nervous system, is described. The sensing interface consists of a dextran layer covalently attached to a self-assembled monolayer of thiolamine compound on the surface of gold electrodes of the crystals. The dextran layer is further modified with GABA molecules to act as the biosensing layer. The affinity binding of monoclonal anti-GABA antibody on the modified piezoelectric crystals is studied in real time without any additional labels. The equilibrium association constant, Keq for binding between anti-GABA antibody and GABA molecules is 14.5 μg·mL−1. The detection limit for anti-GABA is ∼10 nM. The sensitivity of the sensor at a concentration corresponding to half-maximal response is 13.6 ng/mL·Hz. The functionalized sensor substrate is subsequently used for competitive determination of different concentrations of free GABA (range of 5 μM−50 mM) in PBS−BSA buffer. The detection limit of the immunosensor for sensing GABA with maximum sensitivity is ∼42 μM." @default.
- W2010062180 created "2016-06-24" @default.
- W2010062180 creator A5070590528 @default.
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- W2010062180 date "2008-10-24" @default.
- W2010062180 modified "2023-10-11" @default.
- W2010062180 title "Immunosensor for Detection of Inhibitory Neurotransmitter γ-Aminobutyric Acid Using Quartz Crystal Microbalance" @default.
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- W2010062180 doi "https://doi.org/10.1021/ac801463a" @default.
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