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- W2606334103 abstract "Abstract In this paper, we present a novel, rapid and sensitive sensor for biothiols including detection of glutathione (GSH), cysteine (Cys) and homocysteine (Hcy) based on an indicator displacement assay (IDA) for turn on the fluorescence of Murexide-Hg2+ system. In this IDA approach, a commercially available dye, murexide (Mu), using as the indicator and selective detection of biothiols was achieved based on the competition between the indicator and biothiols for the binding with Hg2+. The fluorescence of Mu could be quenched in the presence of Hg2+ due to the coordination between the indicator and Hg2+. Subsequently, the fluorescence of the Mu-Hg2+ system was recovered gradually with the addition of biothiols such as GSH, Cys or Hcy due to their stronger affinity with Hg2+. A good relationship was obtained from 0.1–40 μM for GSH, from 0.5–30 μM for Cys and from 0.5–50 μM for Hcy, respectively. This method has been successfully applied to the trace detection of GSH, Cys and Hcy in human urine and serum samples with satisfactory results. Remarkably, the sensing process is able to be observed by the naked eye under UV irradiation which provides an instrument-free platform for point-of-care monitoring." @default.
- W2606334103 created "2017-04-28" @default.
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- W2606334103 date "2017-10-01" @default.
- W2606334103 modified "2023-10-16" @default.
- W2606334103 title "An indicator-displacement assay based on the Murexide-Hg2+ system for fluorescence turn-on detection of biothiols in biological fluids" @default.
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- W2606334103 doi "https://doi.org/10.1016/j.snb.2017.04.017" @default.
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