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Huang L, Qin S, Xu Y, Cheng S, Yang J, Wang Y. Enzyme-free colorimetric detection of uric acid on the basis of MnO2 nanosheets - mediated oxidation of 3, 3', 5, 5'- tetramethylbenzidine. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Li J, Liu XP, Ye WQ, Xu ZR. Photothermal visual sensing of alkaline phosphatase based on the etching of Au@MnO 2 core-shell nanoparticles. J Colloid Interface Sci 2023; 641:568-576. [PMID: 36963250 DOI: 10.1016/j.jcis.2023.03.091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/24/2023] [Accepted: 03/14/2023] [Indexed: 03/19/2023]
Abstract
Alkaline phosphatase (ALP), as a crucial enzyme involved in many physiological activities, is always used as one of the significant biomarkers in clinical diagnosis. Herein, a novel, simple, and effective photothermal quantitative method based on the etching of MnO2-coated gold nanoparticles (Au@MnO2 NPs) was established for ALP activity assay with a household thermometer-based visual readout. The photothermal effect of Au@MnO2 NPs is much higher than that of MnO2 NPs or Au NPs. The MnO2 shell of Au@MnO2 NPs can be etched by ascorbic acid, a product of ALP-catalyzed hydrolysis of 2-phospho-l-ascorbic acid. With the etching of Au@MnO2 NPs, the photothermal conversion efficiency decreased gradually, causing the decrease of the temperature increment of the solutions by degrees. A household thermometer, instead of large-scale and professional instruments, was used as a signal reader to realize the visual quantitative detection. The photothermal platform was used successfully for the determination of ALP with a wide linear range from 2.0 to 50 U/L and a detection limit as low as 0.75 U/L. Moreover, the inhibition efficiency of sodium vanadate for ALP activity was investigated, proving the photothermal quantitative method will be a potential platform for screening enzyme inhibitors. Such a sensitive, facile, and low-cost sensing assay provides a new prospect to develop platforms for point-of-care testing.
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Affiliation(s)
- Jin Li
- Research Center for Analytical Sciences, Northeastern University, Shenyang 110819, PR China; School of Pharmacy, Shenyang Medical College, Shenyang 110034, PR China
| | - Xiao-Peng Liu
- Research Center for Analytical Sciences, Northeastern University, Shenyang 110819, PR China
| | - Wen-Qi Ye
- Research Center for Analytical Sciences, Northeastern University, Shenyang 110819, PR China
| | - Zhang-Run Xu
- Research Center for Analytical Sciences, Northeastern University, Shenyang 110819, PR China.
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Peng B, Guo Y, Ma Y, Zhou M, Zhao Y, Wang J, Fang Y. Smartphone-assisted multiple-mode assay of ascorbic acid using cobalt oxyhydroxide nanoflakes and carbon quantum dots. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107185] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Zhang S, Lu Z, Li S, Wang T, Li J, Chen M, Chen S, Sun M, Wang Y, Rao H, Liu T. Portable smartphone device-based multi-signal sensing system for on-site and visual determination of alkaline phosphatase in human serum. Mikrochim Acta 2021; 188:157. [PMID: 33825047 DOI: 10.1007/s00604-021-04803-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/20/2021] [Indexed: 02/08/2023]
Abstract
To provide the basis for clinical diagnosis in an emergency case, a portable smartphone device-based multi-signal sensing system for on-site determination of alkaline phosphatase (ALP) is introduced. In this system, cobalt hydroxide (CoOOH) nanoflakes can oxidize O-phenylenediamine (OPD) to produce 2,3-diaminophenazine (OxOPD), resulting in a strong fluorescence at 565 nm and an absorbance at 420 nm, respectively. The ascorbic acid 2-phosphate (AAP) can be hydrolyzed by alkaline phosphatase (ALP) to yield ascorbic acid (AA). Then, AA reduces the CoOOH nanoflakes to produce Co2+, and AA is oxidized to form dehydroascorbic acid (DHAA), thereby inhibiting the formation of OxOPD. The reaction product DHAA further combines with OPD to yield 3-(1,2-dihydroxyethyl)furo[3,4-b]quinoxalin-1(3H)-one (DFQ) accompanied by a strong fluorescence at 430 nm. Based on this, the fluorometric assay for ALP has a wide linear range from 0.8 to 190 U/L with a low detection limit of 0.16 U/L, and the colorimetric assay from 3 to 130 U/L with a detection limit of 1.94 U/L. Moreover, a portable smartphone sensing platform integrated with fluorescent and colorimetric signals was established for rapid determination of ALP without spectrometers. Recoveries of 97-104% for spiked samples and relative standard deviations (RSD) of less than 2% (n = 3) confirmed the feasibility of the developed platform in complicated samples, opening up new horizons for on-site evaluation in the biomedical field.
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Affiliation(s)
- Shuxin Zhang
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Zhiwei Lu
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Suying Li
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Tanke Wang
- College of Information Engineering, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Jian Li
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Maoting Chen
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Suru Chen
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Mengmeng Sun
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Yanying Wang
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Hanbing Rao
- College of Science, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China.
| | - Tao Liu
- College of Information Engineering, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, People's Republic of China.
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