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    Silicon quantum dots (SiQDs) synthesized based on 3-aminopropyltrimethoxysilane (ATPMS) as silicon source were used to detect the activity of lactate dehydrogenase (LDH) through changes of fluorescence intensity of SiQDs. In this system, the fluorescence of SiQDs was first quenched by nicotinamide adenine dinucleotide (NADH), and then recovered with the addition of LDH, as NADH was consumed by catalytic reaction of LDH. A linear calibration chart of LDH is obtained in the range of 0.77-385 U/mL. The assay displays high selectivity towards LDH detection, and was successfully applied to the analysis of LDH in human serum samples. This assay has great prospects for the diagnosis and prognosis of various diseases, especially melanoma. Copyright © 2021 Elsevier B.V. All rights reserved.


    Yangzhe Zhou, Min Qi, Minghui Yang. Fluorescence determination of lactate dehydrogenase activity based on silicon quantum dots. Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 2022 Mar 05;268:120697

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    PMID: 34915230

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