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Gong H, Zhou Y, Ma P, Xiao X, Liu H. Cobalt-Modified Black Phosphorus Nanosheets-Enabled Ferrate (VI) Activation for Efficient Chemiluminescence Detection of Thiabendazole. ACS Sens 2024; 9:2465-2475. [PMID: 38682311 DOI: 10.1021/acssensors.4c00156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
The development of chemiluminescence-based innovation sensing systems and the construction of a sensing mechanism to improve the analytical performance of compounds remain a great challenge. Herein, we fabricated an advanced oxidation processes pretreated chemiluminescence (AOP-CL) sensing system via the introduction of cobalt-modified black phosphorus nanosheets (Co@BPNs) to achieve higher efficient thiabendazole (TBZ) detection. Co@BPNs, enriched with lattice oxygen, exhibited a superior catalytic performance for accelerating the decomposition of ferrate (VI). This Co@BPNs-based ferrate (VI) AOP system demonstrated a unique ability to selectively decompose TBZ, resulting in a strong CL emission. On this basis, a highly selective and sensitive CL sensing platform for TBZ was established, which exhibited strong resistance to common ions and pesticides interference. This was successfully applied to detecting TBZ in environmental samples such as tea and kiwi fruits. Besides, the TBZ detection mechanism was explored, Co@BPNs-based ferrate (VI) AOP system produced a high yield of ROS (mainly 1O2), which oxidized the thiazole-based structure of TBZ, generating chemical energy that was transferred to Co@BPNs via a chemical electron exchange luminescence (CIEEL) mechanism, leading to intense CL emission. Notably, this study not only proposed an innovative approach to enhance the chemical activity and CL properties of nanomaterials but also offered a new pathway for designing efficient CL probes for pollutant monitoring in complex samples.
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Affiliation(s)
- Hui Gong
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - Yuxian Zhou
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - Peihua Ma
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - Xin Xiao
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - Houjing Liu
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
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2
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Luis-Sunga M, Carinelli S, García G, González-Mora JL, Salazar-Carballo PA. Electrochemical Detection of Bisphenol A Based on Gold Nanoparticles/Multi-Walled Carbon Nanotubes: Applications on Glassy Carbon and Screen Printed Electrodes. SENSORS (BASEL, SWITZERLAND) 2024; 24:2570. [PMID: 38676187 PMCID: PMC11054518 DOI: 10.3390/s24082570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/12/2024] [Accepted: 04/13/2024] [Indexed: 04/28/2024]
Abstract
Bisphenol A (BPA) has been classified as an endocrine-disrupting substance that may cause adverse effects on human health and the environment. The development of simple and sensitive electrochemical biosensors is crucial for the rapid and effective quantitative determination of BPA. This work presents a study on electrochemical sensors utilizing gold nanoparticle-modified multi-walled carbon nanotubes (CNT/AuNPs). Glassy carbon electrodes (GCEs) and screen-printed electrodes (SPEs) were conveniently modified and used for BPA detection. AuNPs were electrodeposited onto the CNT-modified electrodes using the galvanostatic method. The electrodes were properly modified and characterized by using Raman spectroscopy, cyclic voltammetry (CV), and electrochemical impedance analysis (EIS). The electrochemical response of the sensors was studied using differential pulse voltammetry (DPV) and constant potential amperometry (CPA) for modified GCE and SPE electrodes, respectively, and the main analytical parameters were studied and optimized. Problems encountered with the use of GCEs, such as sensor degradation and high limit of detection (LOD), were overcome by using modified SPEs and a flow injection device for the measurements. Under this approach, an LOD as low as 5 nM (S/N = 3) was achieved and presented a linear range up to 20 μM. Finally, our investigation addressed interference, reproducibility, and reusability aspects, successfully identifying BPA in both spiked and authentic samples, including commercial and tap waters. These findings underscore the practical applicability of our method for accurate BPA detection in real-world scenarios. Notably, the integration of SPEs and a flow injection device facilitated simplified automation, offering an exceptionally efficient and reliable solution for precise BPA detection in water analysis laboratories.
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Affiliation(s)
- Maximina Luis-Sunga
- Laboratory of Sensors, Biosensors and Advanced Materials, Faculty of Health Sciences, Universidad de la Laguna, Campus de Ofra s/n, 38071 La Laguna, Spain; (M.L.-S.); (J.L.G.-M.); (P.A.S.-C.)
- Departamento de Química, Instituto Universitario de Materiales y Nanotecnología, Universidad de la Laguna, P.O. Box 456, 38200 La Laguna, Spain;
| | - Soledad Carinelli
- Laboratory of Sensors, Biosensors and Advanced Materials, Faculty of Health Sciences, Universidad de la Laguna, Campus de Ofra s/n, 38071 La Laguna, Spain; (M.L.-S.); (J.L.G.-M.); (P.A.S.-C.)
- Departamento de Ciencias Médicas Básicas and Instituto de Tecnologías Biomédicas, Universidad de La Laguna, 38200 La Laguna, Spain
| | - Gonzalo García
- Departamento de Química, Instituto Universitario de Materiales y Nanotecnología, Universidad de la Laguna, P.O. Box 456, 38200 La Laguna, Spain;
| | - José Luis González-Mora
- Laboratory of Sensors, Biosensors and Advanced Materials, Faculty of Health Sciences, Universidad de la Laguna, Campus de Ofra s/n, 38071 La Laguna, Spain; (M.L.-S.); (J.L.G.-M.); (P.A.S.-C.)
- Departamento de Ciencias Médicas Básicas and Instituto de Tecnologías Biomédicas, Universidad de La Laguna, 38200 La Laguna, Spain
- Instituto Universitario de Neurociencia, Universidad de la Laguna, 38071 Santa Cruz de Tenerife, Spain
| | - Pedro A. Salazar-Carballo
- Laboratory of Sensors, Biosensors and Advanced Materials, Faculty of Health Sciences, Universidad de la Laguna, Campus de Ofra s/n, 38071 La Laguna, Spain; (M.L.-S.); (J.L.G.-M.); (P.A.S.-C.)
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3
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Tanjung AP, Yin K, Zhao L, Wu JZ, Wang AJ, Mei LP, Song P, Feng JJ. Target-regulated photoactivities of CdS/Ni-MOF heterojunction with [Ru(bpy) 2dppz] 2+ intercalator: a bisphenol A photoelectrochemical aptasensor. Mikrochim Acta 2024; 191:139. [PMID: 38360951 DOI: 10.1007/s00604-024-06230-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/23/2024] [Indexed: 02/17/2024]
Abstract
Bisphenol A (BPA), an important endocrine disrupting compound, has infiltrated human daily lives through electronic devices, food containers, and children's toys. Developing of novel BPA assay methods with high sensitivity holds tremendous importance in valuing the pollution state. Here, we constructed an ultrasensitive photoelectrochemical (PEC) aptasensor for BPA determination by regulating photoactivities of CdS/Ni-based metal-organic framework (CdS/Ni-MOF) with [Ru(bpy)2dppz]2+ sensitizer. CdS/Ni-MOF spheres exhibited excellent photocatalytic performance, serving as a potential sensing platform for the construction of target recognition process. [Ru(bpy)2dppz]2+ were embedded into DNA double-stranded structure, functioning as sensitizer for modulating the signal response of the developed PEC aptasensor. The proposed PEC sensor exhibited outstanding analytical performances, including a wide linear range (0.1 to 1000.0 nM), low detection limit (0.026 nM, at 3σ/m), excellent selectivity, and high stability. This work provides a perspective for the design of ideal photosensitive materials and signal amplification strategies and extends their application in environment analysis.
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Affiliation(s)
- Aisyah Protonia Tanjung
- College of Geography and Environmental Sciences, Key Laboratory of Watershed Earth Surface Processes and Ecological Security, College of Chemistry and Materials Sciences, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Ke Yin
- College of Geography and Environmental Sciences, Key Laboratory of Watershed Earth Surface Processes and Ecological Security, College of Chemistry and Materials Sciences, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Lei Zhao
- College of Geography and Environmental Sciences, Key Laboratory of Watershed Earth Surface Processes and Ecological Security, College of Chemistry and Materials Sciences, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Jiang-Zhou Wu
- College of Geography and Environmental Sciences, Key Laboratory of Watershed Earth Surface Processes and Ecological Security, College of Chemistry and Materials Sciences, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Ai-Jun Wang
- College of Geography and Environmental Sciences, Key Laboratory of Watershed Earth Surface Processes and Ecological Security, College of Chemistry and Materials Sciences, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Li-Ping Mei
- College of Geography and Environmental Sciences, Key Laboratory of Watershed Earth Surface Processes and Ecological Security, College of Chemistry and Materials Sciences, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China.
| | - Pei Song
- College of Geography and Environmental Sciences, Key Laboratory of Watershed Earth Surface Processes and Ecological Security, College of Chemistry and Materials Sciences, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China.
- Central Laboratory, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, 321000, China.
| | - Jiu-Ju Feng
- College of Geography and Environmental Sciences, Key Laboratory of Watershed Earth Surface Processes and Ecological Security, College of Chemistry and Materials Sciences, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China.
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4
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Li Z, Zhai W, Wang L, Liu J, Li C, Xu L. Preparation and characterization of a homogeneous immunoassay for point-of-care testing (POCT) of procalcitonin (PCT). ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:5002-5009. [PMID: 37728429 DOI: 10.1039/d3ay00890h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Procalcitonin (PCT) has been recognized as a specific and early marker for microbial infection and sepsis. Sensitive measuring interaction-triggered luminescence experiment (SMILE), a homogeneous immunoassay method, was established for point-of-care testing (POCT) of PCT. SMILE is achieved through the principle of double antibody sandwich, where two antibodies immobilized on the surface of polystyrene microspheres (donor and acceptor beads) bind to the PCT antigen. The donor bead contains phthalocyanine dye (luminol chemiluminescent substance) and the acceptor bead contains dimethylthiophene derivatives and Eu chelates. Therefore, singlet oxygen can be transferred when the distance between donor and acceptor beads is within 200 nm, generating detectable luminescent signals. Scanning electron microscopy (SEM) was used to detect the diameter and polymer dispersity index (PDI) of microspheres before and after binding with antibodies to characterize the immobilization of antibodies. The reaction conditions for antibody immobilization including pH, mass ratio and reaction time have also been optimized. The limit of quantitation (LOQ) of the SMILE method (0.01 ng mL-1) was lower than that of the LFI method (0.1 ng mL-1), the working range (0.01-500 ng mL-1) was wider than that of the LFI method (0.1-50 ng mL-1), and the assay time (10 min) was shorter than that of the LFI method (15 min). So, SMILE is more suitable for POCT of PCT compared with lateral flow immunochromatography (LFI), which is the most used measuring method, due to its advantages of simple operation, saving time, convenience, wide detection range, and high sensitivity and accuracy.
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Affiliation(s)
- Zhaoying Li
- Graduate School, Tianjin Medical University, Tianjin, 300070, China.
- Tianjin Chest Hospital, Tianjin, 300222, China
| | | | - Lu Wang
- Graduate School, Tianjin Medical University, Tianjin, 300070, China.
- School of Pharmacy, Tianjin Medical University, No. 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Jiyang Liu
- Epsilon Biotechnology Corporation, Zhejiang, 311199, China
| | - Chunjie Li
- Tianjin Chest Hospital, Tianjin, 300222, China
| | - Liang Xu
- Graduate School, Tianjin Medical University, Tianjin, 300070, China.
- Tianjin Medical College, Tianjin, 300222, China
- School of Pharmacy, Tianjin Medical University, No. 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
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5
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Sun Y, Su M, Wang M, Zhang R, Wang S, Tan J, Jia Q, Li H, Meng Z. Establishment and analytical performance of light-initiated chemiluminescence assay method for detecting thyrotropin receptor antibody. Biomark Med 2023; 17:349-357. [PMID: 37338244 DOI: 10.2217/bmm-2022-0666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023] Open
Abstract
Aim: To evaluate double-antibody competitive light-initiated chemiluminescence assay method for detecting the thyrotropin receptor antibody. Materials & methods: The optimal working concentrations of competitive antibody and rTSHR were confirmed by checkerboard titration. Assay performance was assessed by precision, linearity, accuracy, limit of blank and clinical evaluation. Results: The coefficient of variation for repeatability and intermediate precision was 3.9-5.9 and 0.9-1.3%, respectively. The correlation coefficient was 0.999 by least squares linear fitting in linearity evaluation. The relative deviation ranged from -5.9 to 4.1%, and the limit of blank of the method was 0.13 IU/l. Compared with the Roche cobas system (Roche Diagnostics, Mannheim, Germany), the relationship between the two assays was shown to be significantly correlative. Conclusion: The light-initiated chemiluminescence assay method for detecting thyrotropin receptor antibody is a rapid, novel and accurate method for thyrotropin receptor antibody measurement.
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Affiliation(s)
- Ying Sun
- Department of Clinical Laboratory, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
| | - Mengxue Su
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
| | - Miao Wang
- Department of Nuclear Medicine, Tianjin Medical University Second Hospital, Pingjiang Road, No. 23, Hexi District, Tianjin, 300211, People's Republic of China
| | - Ruyi Zhang
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
| | - Shen Wang
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
| | - Jian Tan
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
| | - Qiang Jia
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
| | - Huiqiang Li
- School of Medical Laboratory, Tianjin Medical University, Tianjin, 300203, People's Republic of China
| | - Zhaowei Meng
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
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6
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Zhang X, Zhu J, Wu Z, Wen W, Zhang X, Wang S. Electrochemical sensor based on confined synthesis of gold nanoparticles @ covalent organic frameworks for the detection of bisphenol A. Anal Chim Acta 2023; 1239:340743. [PMID: 36628736 DOI: 10.1016/j.aca.2022.340743] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/08/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
Covalent-organic frameworks (COFs), a kind of conjugate crystalline polymers, has great potential for high performance electrochemical sensors due to high porosity, controllable pores and structure, and large specific surface area, etc. Herein, we developed an electrochemical sensor based on confined synthesis of gold nanoparticles @ 1,3,5-triformylphloroglucinol (Tp) and benzidine (BD) connected COFs (Au NPs@TpBD-COFs) for electrochemical detection of bisphenol A (BPA). Firstly, Au NPs were grown on the surface and in the pores of COFs by confinement synthesis strategy, which aimed to improve the conductivity and catalytic activity of COFs. Then, this composite was used to constitute electrochemical sensor for the oxidation of BPA, resulting a good electrocatalytic activity in the phosphate buffer solution (pH 7.4). Due to high conductivity of Au NPs and TpBD-COFs recognize BPA via π-π stacking interactions and hydrogen bonds, the proposed sensor for the detection of BPA has the linear range of 5-1000 μM and the detection limit of 1 μM. Finally, the proposed sensor was used to measure the content of BPA in real water samples with a satisfactory recovery from 98.6 to 106.9%. Those good results confirmed that the proposed electrochemical sensors for monitoring of BPA in the application of COFs provided a significant guidance.
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Affiliation(s)
- Xi Zhang
- Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, PR China
| | - Junlun Zhu
- Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, PR China; Hubei Key Laboratory for Processing and Application of Catalytic Materials, College of Chemistry and Chemical Engineering, Huanggang Normal University, Huanggang, 438000, PR China.
| | - Zhen Wu
- Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, PR China
| | - Wei Wen
- Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, PR China
| | - Xiuhua Zhang
- Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, PR China
| | - Shengfu Wang
- Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, PR China.
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Shen L, Huang X, Zhang Z, Chen Q, Zou X, Gong Z. Chemiluminescence based on UV-assisted persulfate activation for sensitive detection of triphenyl phosphate. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 836:155617. [PMID: 35525354 DOI: 10.1016/j.scitotenv.2022.155617] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/23/2022] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Abstract
Triphenyl phosphate (TPHP), a typical kind of organophosphorus flame retardants (OPFRs) with aryl groups, has been recognized as an emerging contaminant that causes environmental and health hazards. It is a pervasive threat that can be frequently detected in the environment and living organisms. Hence, establishing an efficient analytical method for TPHP is an urgent issue. In this work, a heteropolyacid (HPA)-luminol chemiluminescence strategy coupled with UV-assisted persulfate (PS) activation was proposed for the sensitive and selective detection of TPHP. The UV-assisted PS oxidation pretreatment could decompose the water-insoluble TPHP into smaller orthophosphates, which were further converted into HPA with the subsequently introduced vanadium‑molybdenum acid. The formed HPA served as a catalyst to oxidize luminol, and strong chemiluminescence at 425 nm was generated immediately. Furthermore, the degradation process of TPHP and chemiluminescence mechanism were also investigated. The results demonstrated that some reactive oxygen radicals such as SO4-, OH, 1O2, and O2-, were involved in the degradation and chemiluminescence reaction. Notably, this proposed chemiluminescence analytical strategy realized a highly sensitive detection for TPHP, and granted the limit of detection down to 0.38 ppt. This study provides an attractive perspective for the detection of emerging OPFRs.
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Affiliation(s)
- Liping Shen
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
| | - Xiaoying Huang
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
| | - Zhixiao Zhang
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
| | - Qiumeng Chen
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
| | - Xue Zou
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
| | - Zhengjun Gong
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China; State-province Joint Engineering Laboratory of Spatial Information Technology of High-Speed Rail Safety, Chengdu 611756, China.
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8
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Chen J, Huang X, Ye R, Huang D, Wang Y, Chen S. Fabrication of a novel electrochemical sensor using conductive MOF Cu-CAT anchored on reduced graphene oxide for BPA detection. J APPL ELECTROCHEM 2022. [DOI: 10.1007/s10800-022-01735-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Wang Y, Zheng Y, Li Y, Zhang S, Wang X, Zong H, Huang W, Kong D, Jiang Y, Liu P, Lv Q, Jiang H. Development of a rapid homogeneous immunoassay for detection of rotavirus in stool samples. Front Public Health 2022; 10:975720. [PMID: 35991049 PMCID: PMC9386352 DOI: 10.3389/fpubh.2022.975720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 07/19/2022] [Indexed: 11/16/2022] Open
Abstract
Rotavirus is the main pathogen causing acute viral gastroenteritis. Accurate and rapid diagnosis of rotavirus infection is important to determine appropriate treatment, prevention of unnecessary antibiotics use and control of infection spread. In this study, we established a rapid, accurate, and sensitive amplified luminescent proximity homogeneous assay linked immunosorbent assay (AlphaLISA) for detecting rotavirus and evaluated its efficacy in human stool samples. Our results demonstrated that the sensitivity of AlphaLISA (5−8) significantly exceeded that of the immunochromatographic assay (ICA, 5−4) for rotavirus antigen detection. The intra-assay and inter-assay coefficients of variation were 2.99–3.85% and 5.27–6.51%, respectively. Furthermore, AlphaLISA was specific for rotavirus and did not cross-react with other common diarrhea viruses. AlphaLISA and real-time reverse transcription polymerase chain reaction (RT-qPCR, which is considered a gold standard for detecting diarrhea viruses) tests showed consistent results on 235 stool samples, with an overall consistency rate of 97.87% and a kappa value of 0.894 (P < 0.001). The overall consistency rate of ICA compared with RT-qPCR was 95.74%. AlphaLISA showed better consistency with RT-qPCR than the routinely used ICA for rotavirus detection in stool samples. The AlphaLISA method can be used in clinical practice for the rapid, accurate, and sensitive detection of rotavirus infection.
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Affiliation(s)
- Ye Wang
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Yuling Zheng
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Yan Li
- The Fifth Medical Center of PLA General Hospital, Beijing, China
| | - Shengwei Zhang
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
- Department of Clinical Laboratory, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Xin Wang
- The Fifth Medical Center of PLA General Hospital, Beijing, China
| | - Huijun Zong
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
- The Fifth Medical Center of PLA General Hospital, Beijing, China
| | - Wenhua Huang
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Decong Kong
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Yongqiang Jiang
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
| | - Peng Liu
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
- *Correspondence: Peng Liu
| | - Qingyu Lv
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
- Qingyu Lv
| | - Hua Jiang
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing, China
- Hua Jiang
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10
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Ye RH, Chen JY, Huang DH, Wang YJ, Chen S. Electrochemical Sensor Based on Glassy-Carbon Electrode Modified with Dual-Ligand EC-MOFs Supported on rGO for BPA. BIOSENSORS 2022; 12:bios12060367. [PMID: 35735515 PMCID: PMC9221176 DOI: 10.3390/bios12060367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/08/2022] [Accepted: 05/20/2022] [Indexed: 11/16/2022]
Abstract
The electronic conductive metal-organic frameworks (EC-MOFs) based on a single ligand are not suitable for the accurate detection of bisphenol A (BPA) due to the limitations of their electron-transfer-based sensing mechanism. To overcome this drawback, we developed EC-MOFs with novel dual-ligands, 2,3,6,7,10,11-hexahydroxy-sanya-phenyl (HHTP) and tetrahydroxy 1,4-quinone (THQ), and metal ions. A new class of 2D π-conjugation-based EC-MOFs (M-(HHTP)(THQ)) was synthesized by a self-assemble technique. Its best member (Cu-(HHTP)(THQ)) was selected and combined with reduced graphene (rGO) to form a Cu-(HHTP)(THQ)@rGO composite, which was thoroughly characterized by X-ray diffraction, field scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Cu-(HHTP)(THQ)@rGO was drop-cast onto a glassy carbon electrode (GCE) to obtain a sensor for BPA detection. Cyclic voltammetry and electrochemical impedance tests were used to evaluate the electrode performance. The oxidation current of BPA on the Cu-(HHTP)(THQ)@rGO/GCE was substantially higher than on unmodified GCE, which could be explained by a synergy between Cu-(HHTP)(THQ) (which provided sensing and adsorption) and rGO (which provided fast electron conductivity and high surface area). Cu-(HHTP)(THQ)@rGO/GCE exhibited a linear detection range for 0.05–100 μmol·L−1 of BPA with 3.6 nmol·L−1 (S/N = 3) detection limit. We believe that our novel electrode and BPA sensing method extends the application perspectives of EC-MOFs in the electrocatalysis and sensing fields.
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Affiliation(s)
- Rui-Hong Ye
- Fujian Province-Indonesia Marine Food Joint Research and Development Center, Fujian Polytechnic Normal University, Fuqing 350300, China; (R.-H.Y.); (Y.-J.W.); (S.C.)
| | - Jin-Yang Chen
- College of Life Sciences, Fujian Normal University, Fuzhou 350117, China;
| | - Di-Hui Huang
- Fujian Province-Indonesia Marine Food Joint Research and Development Center, Fujian Polytechnic Normal University, Fuqing 350300, China; (R.-H.Y.); (Y.-J.W.); (S.C.)
- Correspondence:
| | - Yan-Jun Wang
- Fujian Province-Indonesia Marine Food Joint Research and Development Center, Fujian Polytechnic Normal University, Fuqing 350300, China; (R.-H.Y.); (Y.-J.W.); (S.C.)
| | - Sheng Chen
- Fujian Province-Indonesia Marine Food Joint Research and Development Center, Fujian Polytechnic Normal University, Fuqing 350300, China; (R.-H.Y.); (Y.-J.W.); (S.C.)
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Li J, Huang Y, Xiang G, Xu E, Chen T, Yang M, Zhang J. Analytical and clinical evaluation of the light‐initiated chemiluminescent assays for measurement of human thyroid hormones. J Clin Lab Anal 2022; 36:e24266. [PMID: 35312114 PMCID: PMC9102509 DOI: 10.1002/jcla.24266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/10/2022] [Accepted: 01/19/2022] [Indexed: 11/22/2022] Open
Abstract
Background Light‐initiated chemiluminescent assay (LiCA) is a new homogeneous immunoassay. The aim of this study was to evaluate the analytical and clinical performance of the assays for the detection of thyroid hormones based on the fully automated LiCA 800 analyzer. Methods Analytical validations of the LiCA thyroid assays (TSH, FT3, FT4, T3, and T4) included precision, linearity, analytical sensitivity, interference, and method comparison applying the protocols of the Clinical and Laboratory Standards Institute (CLSI). The diagnostic performance was assessed by the receiver operating characteristic (ROC) curve analysis with different assay schemes for the diagnosis of hyperthyroidism and hypothyroidism. Results Within‐run and within‐lab precisions (%CV) of the five assays ranged from 1.06 to 6.40% at all concentrations evaluated. A satisfactory linearity was verified over the entire measuring range for TSH, T3, and T4 (R > 0.99, change in recovery <10%, p = 0.000 all). Paired‐comparison measurements presented a comparable assay for each of the five assays (R > 0.96, median bias <5%, p < 0.0001 all) between LiCA and Cobas across three institutes. The diagnostic accuracy of the LiCA assays for hyperthyroidism or hypothyroidism was quantified by the areas under curves (AUC) as 0.925 or 0.832 with the five‐assay panel (TSH, FT3, FT4, T3, and T4) and as 0.921 or 0.811 with the three‐assay panel (TSH, FT3, and FT4), respectively. No significant difference was found between the AUC of LiCA and that of DxI, Cobas, or Centaur (p > 0.3 all). Conclusion LiCA 800 provides a precise and high‐throughput immunoassay platform for detection of thyroid hormones. It is acceptable for clinical use.
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Affiliation(s)
- Jing Li
- Clinical Laboratory Peking University International Hospital Beijing China
| | - Youyuan Huang
- Department of Endocrinology Peking University First Hospital Beijing China
| | - Guiming Xiang
- Clinical Laboratory The Second Affiliated Hospital of Army Medical University Chongqing China
| | - Enjun Xu
- Department of Clinical Laboratory First Affiliated Hospital of Anhui Medical University Hefei China
| | - Tao Chen
- Clinical Laboratory Peking University International Hospital Beijing China
| | - Ming Yang
- Clinical Laboratory Peking University International Hospital Beijing China
| | - Jie Zhang
- Clinical Laboratory Peking University International Hospital Beijing China
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12
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Aerssens D, Cadoni E, Tack L, Madder A. A Photosensitized Singlet Oxygen ( 1O 2) Toolbox for Bio-Organic Applications: Tailoring 1O 2 Generation for DNA and Protein Labelling, Targeting and Biosensing. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27030778. [PMID: 35164045 PMCID: PMC8838016 DOI: 10.3390/molecules27030778] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/17/2022] [Accepted: 01/18/2022] [Indexed: 12/17/2022]
Abstract
Singlet oxygen (1O2) is the excited state of ground, triplet state, molecular oxygen (O2). Photosensitized 1O2 has been extensively studied as one of the reactive oxygen species (ROS), responsible for damage of cellular components (protein, DNA, lipids). On the other hand, its generation has been exploited in organic synthesis, as well as in photodynamic therapy for the treatment of various forms of cancer. The aim of this review is to highlight the versatility of 1O2, discussing the main bioorganic applications reported over the past decades, which rely on its production. After a brief introduction on the photosensitized production of 1O2, we will describe the main aspects involving the biologically relevant damage that can accompany an uncontrolled, aspecific generation of this ROS. We then discuss in more detail a series of biological applications featuring 1O2 generation, including protein and DNA labelling, cross-linking and biosensing. Finally, we will highlight the methodologies available to tailor 1O2 generation, in order to accomplish the proposed bioorganic transformations while avoiding, at the same time, collateral damage related to an untamed production of this reactive species.
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13
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Wang M, Li J, Huang Y, Chen T, Dong S, Zhang R, Wang S, Tan J, Jia Q, Meng Z. Analytical validation of the LiCA® high-sensitivity human thyroid stimulating hormone assay. Clin Biochem 2021; 101:42-49. [PMID: 34863703 DOI: 10.1016/j.clinbiochem.2021.11.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 11/26/2021] [Accepted: 11/28/2021] [Indexed: 11/24/2022]
Abstract
BACKGROUND We aimed to assess the analytical characteristics of a new high-sensitivity human thyroid stimulating hormone (hTSH) assay on a light-initiated chemiluminescent immunoassay system (LiCA Smart) and examine the utility of this assay in the context of profoundly low TSH levels (<0.01 mIU/L). METHODS Analytical validations included precision, linearity, reportable range, analytical sensitivity, interference, reagent lot-to-lot and between-instrument variability, and method comparisons. Additionally, a cross-sectional study was performed to evaluate the assay for the detection of profoundly low TSH levels in comparison to those of two other ultrasensitive hTSH assays. RESULTS Within-run and within-lab imprecisions (%CV) were < 5% at all concentrations studied. A satisfactory linearity (R = 0.998, change in recovery < 5%) was verified over the entire measuring range. Method comparisons demonstrated a reasonable agreement (R > 0.99, median bias < 5%) between LiCA and Cobas, ADVIA, UniCel or Architect. The limit of quantitation was 0.0019 mIU/L. Comparative measurements of 236 patient samples with profoundly low TSH levels (<0.01 mIU/L) by LiCA, Cobas, and Architect revealed that the detection rate observed with LiCA (67.8%) was significantly higher than that with Cobas (28.0%) or Architect (21.7%). In a further comparative follow-up of patients with overt hyperthyroidism who were receiving treatment, an earlier recovery response of TSH was observed in LiCA. CONCLUSIONS The LiCA Smart hTSH is a precise and highly sensitive fourth-generation assay. The assay demonstrated superior detection sensitivity for profoundly low TSH levels and was acceptable for clinical use.
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Affiliation(s)
- Miao Wang
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Jing Li
- Clinical Laboratory, Peking University International Hospital, Beijing, China
| | - Youyuan Huang
- Department of Endocrinology, Peking University First Hospital, Beijing, China
| | - Tao Chen
- Clinical Laboratory, Peking University International Hospital, Beijing, China
| | - Sheng Dong
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Ruyi Zhang
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Shen Wang
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Jian Tan
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Qiang Jia
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Zhaowei Meng
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China.
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Jia XX, Yao ZY, Liu S, Gao ZX. Suspension array for multiplex immunoassay of five common endocrine disrupter chemicals. Mikrochim Acta 2021; 188:290. [PMID: 34355262 DOI: 10.1007/s00604-021-04905-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 06/19/2021] [Indexed: 10/20/2022]
Abstract
A low cost and effective indirect competitive method is reported to detect five EDCs, 17-beta-estradiol (E2), estriol (E3), bisphenol A (BPA), diethylstilbestrol (DES), and nonylphenol (NP) simultaneously, based on suspension array technology (SAT). Five kinds of complete antigens (E2-BSA, E3-BSA, BPA-BSA, DES-BPA, NP-BSA) were coupled to different encoding microspheres using purpose-made solutions in our laboratory instead of commercially available amino coupling kits; the method was further optimized for determination and reducing the cost. Encoding and signaling fluorescence of the particles are determined at 635/532 nm emission wavelengths. High-throughput curves of five EDCs were draw and the limit of detection (LOD) were between 0.0010 ng mL-1 ~ 0.0070 ng mL-1. Compared with traditional ELISA methods, the SAT exhibited better specificity and sensitivity. Experiments using spiked milk and tap water samples were also carried out, and the recovery was between 85 and 110%; the results also confirmed good repeatability and reproducibility. It illustrated great potential of the present strategy in the detection of EDCs in actual samples.
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Affiliation(s)
- Xue-Xia Jia
- College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300457, People's Republic of China.,Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, 1 Da Li Road, Tianjin, 300050, People's Republic of China
| | - Zi-Yi Yao
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, 1 Da Li Road, Tianjin, 300050, People's Republic of China
| | - Sha Liu
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, 1 Da Li Road, Tianjin, 300050, People's Republic of China
| | - Zhi-Xian Gao
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, 1 Da Li Road, Tianjin, 300050, People's Republic of China.
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Önal E, Tüncel Ö, Albakour M, Çelik GG, Gürek AG, Özçelik S. Synthesizing and evaluating the photodynamic efficacy of asymmetric heteroleptic A 7B type novel lanthanide bis-phthalocyanine complexes. RSC Adv 2021; 11:6188-6200. [PMID: 35423167 PMCID: PMC8694812 DOI: 10.1039/d1ra00197c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 01/20/2021] [Indexed: 11/22/2022] Open
Abstract
In this study heteroleptic A7B type novel Lu(iii) and Eu(iii) lanthanide phthalocyanines (LnPc(Pox)[Pc′(AB3SH)]) with high extinction coefficients have been synthesized as candidate photosensitizers with reaction yields higher than 33%. The singlet oxygen quantum yields of LuPc(Pox)[Pc′(AB3SH)] and EuPc(Pox)[Pc′(AB3SH)], respectively, were measured 17% and 1.4% by the direct method in THF. The singlet oxygen quantum yield of LuPc(Pox)[Pc′(AB3SH)] in THF is the highest among lutetium(iii) bis-phthalocyanine complexes to date. The photodynamic efficacy of the heteroleptic lanthanide phthalocyanines was evaluated by measuring cell viabilities of A549 and BEAS-2B lung cells, selected to representing in vitro models for testing cancer and normal cells against potential drugs. The cell viabilities demonstrated concentration dependent behavior and were varied by the type of phthalocyanines complexes. Irradiation of the cells for 30 minutes with LED array at 660 nm producing flux of 0.036 J cm−2 s−1 increased cell death for LuPcPox-OAc, LuPc(Pox)[Pc′(AB3SH)] and ZnPc. The IC50 concentrations of LuPc(Pox)[Pc′(AB3SH)] and ZnPc were determined to be below 10 nM for both cell lines, agreeing very well with the singlet oxygen quantum yield measurements. These findings suggest that LuPc(Pox)[Pc′(AB3SH)] and particularly LuPcPox-OAc are promising drug candidates enabling lowered dose and shorter irradiation time for photodynamic therapy. Novel bis-lanthanide Lu(iii) and Eu(iii) phthalocyanine complexes have been designed/synthesized and tested their photodynamic efficacy for A549 and BEAS-2B cells in vitro conditions as candidate photosensitizers in PDT.![]()
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Affiliation(s)
- Emel Önal
- Department of Chemistry, Gebze Technical University Gebze 41400 Kocaeli Turkey .,Faculty of Engineering, Doğuş University Ümraniye 34775 Istanbul Turkey
| | - Özge Tüncel
- Department of Chemistry, Izmir Institute of Technology Urla 35430 Izmir Turkey
| | - Mohamad Albakour
- Department of Chemistry, Gebze Technical University Gebze 41400 Kocaeli Turkey
| | | | - Ayşe Gül Gürek
- Department of Chemistry, Gebze Technical University Gebze 41400 Kocaeli Turkey
| | - Serdar Özçelik
- Department of Chemistry, Izmir Institute of Technology Urla 35430 Izmir Turkey
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16
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Gao S, Li J. Development of a Novel Homogeneous Nanoparticle-Based Assay for Rapid and High-Throughput Quantitation of the sST2 Protein in Human Serum. Int J Nanomedicine 2021; 15:10539-10546. [PMID: 33408473 PMCID: PMC7779812 DOI: 10.2147/ijn.s285899] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 12/11/2020] [Indexed: 11/23/2022] Open
Abstract
Purpose The suppression of tumorigenicity 2 (ST2) protein is a member of the interleukin-1 receptor family with the transmembrane (ST2L) and soluble (sST2) subtypes and plays an important role in several diseases. Therefore, the present study aimed to establish and validate a novel amplified luminescent proximity homogeneous immunoassay (AlphaLISA) for the detection of sST2 in human serum. Materials and Methods Based on a sandwich-type immunoassay format, sST2 was captured using two different anti-sST2 antibodies. One of the antibodies was biotinylated while the other one was coated with AlphaLISA chemibeads. Thereafter, multiple tests were conducted to optimize the working conditions and validate analytical performance. Results The optimum concentration of the biotinylated antibodies was 1 μg/mL while the optimal dilution ratio for the anti-sST2 antibodies and conjugated chemibeads was 1:500. In addition, the optimal antigen-antibody reaction time was 15 minutes (min). Notably, the developed method showed a short turnaround time of about 25 min. Moreover, the assay exhibited high sensitivity with a limit of detection (LOD) of 0.176 ng/mL and a limit of quantification (LOQ) of 0.8 ng/mL. Furthermore, the intra-assay precision and inter-assay precision values were 5.29–7.10% and 9.41%–13.66%, respectively. It is also noteworthy that the test results deviated by less than ±10% when samples had ≤10.0 ng/mL of triglycerides, ≤0.5 mmol/L of bilirubin, ≤5.0 g/L of triglyceride, and ≤250 μg/L of biotin. Additionally, the developed assay was almost consistent with the commercially available PresageTM ST2 assay kit, with a Spearman correlation coefficient of 0.916 and an R2 of 0.963 as well as a slope of 0.957 from linear regression analysis. Conclusion The present study showed that the sandwich AlphaLISA is a rapid, high-throughput, and reliable test for studying the levels of sST2 in a variety of diseases.
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Affiliation(s)
- Shenxia Gao
- The Clinical Laboratory, Tianjin Chest Hospital, Tianjin, People's Republic of China
| | - Junpu Li
- The Clinical Laboratory, Tianjin Chest Hospital, Tianjin, People's Republic of China
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17
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Molybdenum trioxide incorporated in a carbon paste as a sensitive device for bisphenol A monitoring. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105528] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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18
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Li P, Deng S, Zech Xu Z. Toxicant substitutes in immunological assays for mycotoxins detection: A mini review. Food Chem 2020; 344:128589. [PMID: 33246689 DOI: 10.1016/j.foodchem.2020.128589] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 10/10/2020] [Accepted: 11/05/2020] [Indexed: 02/07/2023]
Abstract
Recurring mycotoxins contamination has posedaseriousthreatto food safety worldwide. Competitive immunoassays are widely used techniques for high-throughput mycotoxins detection in agricultural products and foods. However, the inevitable introduction of mycotoxin conjugates produced by chemical conjugation usually results in complicated by-products, large batch errors and threats to operators and environment. Biologically derived surrogates of mycotoxin conjugates or mycotoxin standards are renewable immunoreagents. They can serve the same function as the responding counterparts in the immunoassays. The substitute-based immunoassays exhibit satisfactory sensitivity, pose less health threats to operators and environment, and contribute to the standardization of immunoassays for mycotoxins. This review focuses on the current applications of substitute-based immunoassays, clarifies their underlying mechanisms and provides a careful comparison. Challenges and future prospects are discussed.
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Affiliation(s)
- Ping Li
- State Key Laboratory of Food Science and Technology, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, China
| | - Shengliang Deng
- Institute of Microbiology, Jiangxi Academy of Sciences, No. 7777 Changdong Avenue, Nanchang 330096, China.
| | - Zhenjiang Zech Xu
- State Key Laboratory of Food Science and Technology, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, China.
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19
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Abdolmohammad-Zadeh H, Zamani-Kalajahi M. In situ generation of H2O2 by a layered double hydroxide as a visible light nano-photocatalyst: Application to bisphenol A quantification. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105303] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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20
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Mahdi ZS, Talebnia Roshan F, Nikzad M, Ezoji H. Biosynthesis of zinc oxide nanoparticles using bacteria: a study on the characterization and application for electrochemical determination of bisphenol A. INORG NANO-MET CHEM 2020. [DOI: 10.1080/24701556.2020.1835962] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Zahra Sadat Mahdi
- Faculty of Chemical Engineering, Babol Noshirvani University of Technology, Babol, Iran
| | - Farid Talebnia Roshan
- Faculty of Chemical Engineering, Babol Noshirvani University of Technology, Babol, Iran
| | - Maryam Nikzad
- Faculty of Chemical Engineering, Babol Noshirvani University of Technology, Babol, Iran
| | - Hoda Ezoji
- Faculty of Chemical Engineering, Babol Noshirvani University of Technology, Babol, Iran
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21
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Guo Q, Wang Y, Chen C, Wei D, Fu J, Xu H, Gu H. Multiplexed Luminescence Oxygen Channeling Immunoassay Based on Dual-Functional Barcodes with a Host-Guest Structure: A Facile and Robust Suspension Array Platform. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1907521. [PMID: 32174029 DOI: 10.1002/smll.201907521] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 02/08/2020] [Accepted: 02/19/2020] [Indexed: 05/24/2023]
Abstract
The development of a powerful immunoassay platform with capacities of both simplicity and high multiplexing is promising for disease diagnosis. To meet this urgent need, for the first time, a multiplexed luminescent oxygen channeling immunoassay (multi-LOCI) platform by implementation of LOCI with suspension array technology is reported. As the microcarrier of the platform, a unique dual-functional barcode with a host-guest structure composed of a quantum dot host bead (QDH) and LOCI acceptor beads (ABs) is designed, in which QDH provides function of high coding capacity while ABs facilitate the LOCI function. The analytes bridge QDH@ABs and LOCI donor beads (DBs) into a close proximity, forming a QDH@ABs-DBs "host-guest-satellite" superstructure that generates both barcode signal from QDH and LOCI signal induced by singlet oxygen channeling between ABs and DBs. Through imaging-based decoding, different barcodes are automatically distinguished and colocalized with LOCI signals. Importantly, the assay achieves simultaneous detection of multiple analytes within one reaction, simply by following a "mix-and-measure" protocol without the need for tedious washing steps. Furthermore, the multi-LOCI platform is validated for real sample measurements. With the advantages of robustness, simplicity, and high multiplexing, the platform holds great potential for the development of point-of-care diagnostics.
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Affiliation(s)
- Qingsheng Guo
- Shanghai Jiao Tong University Affiliated Sixth Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Yao Wang
- Shanghai Jiao Tong University Affiliated Sixth Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Cang Chen
- Shanghai Jiao Tong University Affiliated Sixth Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Dan Wei
- Shanghai Jiao Tong University Affiliated Sixth Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Jianping Fu
- Department of Mechanical Engineering, Department of Biomedical Engineering, Department of Cell and Developmental Biology, University of Michiga Ann Arbor, Ann Arbor, MI, 48109, USA
| | - Hong Xu
- Shanghai Jiao Tong University Affiliated Sixth Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Hongchen Gu
- Shanghai Jiao Tong University Affiliated Sixth Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
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22
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Long F, Li W, Song D, Han X, Zhou Y, Fang S, Xu W, Liu J, Zhu A. Portable and automated fluorescence microarray biosensing platform for on-site parallel detection and early-warning of multiple pollutants. Talanta 2019; 210:120650. [PMID: 31987168 DOI: 10.1016/j.talanta.2019.120650] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 12/08/2019] [Accepted: 12/14/2019] [Indexed: 01/26/2023]
Abstract
The portable and automated fluorescence microarray biosensing platform (FMB) that employed a compact hybrid optical structure, microfluidics, and microarray biosensors was constructed for on-site parallel detection of multiple analytes. In the FMB, a hybrid optical structure that composed of a 1 × 4 single mode fiber optic coupler, four fiber optic switches, a single-multi mode fiber optic bundle coupler was at the first time developed for the transmission of the excitation light and the collection and transmission of multi-channel fluorescence signals. Through the control of fiber optic switches, the parallel fluorescence assay of four channels could be achieved using only one excitation light and one photodiode detector on the basis of the time-resolved effect. This optical design not only greatly increased the efficiency of light transmission and fluorescence collection and detection sensitivity of the FMB, but also allows the miniaturization and portability of the whole system because of few optical separation elements used and no requirement of rigorous optical alignment. Taking Microcystin-LR (MC-LR), 2,4-D, atrazine (ATZ), and bisphenol A (BPA) for example, the application potential of the FMB to rapidly and parallelly detect four typical pollutants in real water with high sensitivity and specificity was demonstrated. The limits of detection of MC-LR, 2,4-D, ATZ, and BPA were 0.04 μg/L, 0.09 μg/L, 0.02 μg/L, and 0.03 μg/L, respectively. The FMB could also achieve early-warning of pollutants thanks to its ability of rapidity, high-frequency, and multiple-analyte detection. The FMB has significant implications as a multiplexable, portable, rapid, and quantitative detection platform for pollution accidents and water quality management to satisfy the increasing demands of alerting and protecting civilians.
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Affiliation(s)
- Feng Long
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Wei Li
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872, China
| | - Dan Song
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872, China
| | - Xiangzhi Han
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872, China
| | - Yue Zhou
- Research Institute of Chemical Defense, Beijing, 102205, China
| | - Shunyan Fang
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872, China
| | - Wenjuan Xu
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872, China
| | - Jiayao Liu
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872, China
| | - Anna Zhu
- Research Institute of Chemical Defense, Beijing, 102205, China; State Key Laboratory of NBC Protection FOR Civilian, Beijing, 102205, China
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Li J, Li L, Bian Y, Yu Y, Qiang Z, Zhang Y, Li H. Quantitation of estradiol by competitive light-initiated chemiluminescent assay using estriol as competitive antigen. J Clin Lab Anal 2019; 34:e23014. [PMID: 31444844 PMCID: PMC6977107 DOI: 10.1002/jcla.23014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 07/28/2019] [Accepted: 07/30/2019] [Indexed: 12/12/2022] Open
Abstract
Background Light‐initiated chemiluminescent assays (LICA) are homogeneous assays that are sensitive, specific, and free of separation and washing steps and have high throughput and high precision. Methods In this research, we developed a competitive method by LICA to achieve accurate quantification of estradiol (E2) in human serum. E2 competed with estriol (E3) for binding to anti‐human E2 antibodies. E3 was linked to biotin via bovine serum albumin as a linker. As this assay used competition between the labeled tracer and the analyte, an increase in E2 concentration will cause a signal decrease. Results The expected detection range of E2 was 20‐5000 pg/mL. The analytical and functional sensitivities were 7.16 and 13.7 pg/mL, respectively. The intra‐ and inter‐assay coefficients of variation were both below 15%, and the recovery rate ranged from 97.5% to 106.8%. The interference rates ranged from −3.6% to 5.4% and met detection requirements for E2 in hyperbilirubinemia, hemolysis, and lipemia in clinical samples. In addition, the cross‐reactivity rates between E2 and structural analogs and some reproductive hormones varied from 1.9% to 10.6% which showed that LICA is highly specific for E2. Moreover, our results showed high accordance with the IMMULITE 2000 (y = 0.6695x + 47.92, r2 = .843) and VIDAS systems (y = 1.099x − 821.5, r2 = .9392). Conclusion Our data show that the LICA, which is easy to automate, is a promising technique for quantification of E2 in human serum and could be used for clinical detection.
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Affiliation(s)
- Jiuzhi Li
- School of Medical Laboratory, Tianjin Medical University, Tianjin, China.,Department of Clinical Laboratory, Tianjin Central Hospital of Obstetrics and Gynecology, Tianjin, China
| | - Liuxu Li
- School of Medical Laboratory, Tianjin Medical University, Tianjin, China
| | - Ying Bian
- School of Medical Laboratory, Tianjin Medical University, Tianjin, China
| | - Yang Yu
- School of Medical Laboratory, Tianjin Medical University, Tianjin, China
| | - Zhonghua Qiang
- School of Medical Laboratory, Tianjin Medical University, Tianjin, China
| | - Yuexiang Zhang
- Department of Clinical Laboratory, Tianjin Central Hospital of Obstetrics and Gynecology, Tianjin, China
| | - Huiqiang Li
- School of Medical Laboratory, Tianjin Medical University, Tianjin, China
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Wang Y, Dzakah EE, Kang Y, Cai Y, Wu P, Tang B, Li R, He X. A sensitive and rapid chemiluminescence immunoassay for point-of-care testing (POCT) of copeptin in serum based on high-affinity monoclonal antibodies via cytokine-assisted immunization. Int J Nanomedicine 2019; 14:4293-4307. [PMID: 31354261 PMCID: PMC6580123 DOI: 10.2147/ijn.s200556] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 04/03/2019] [Indexed: 12/30/2022] Open
Abstract
Purpose: Antibodies are key reagents in the development of immunoassay. We attempted to develop high-performance CPP immunoassays using high-affinity monoclonal antibodies prepared via cytokine-assisted immunization. Methods: We used fetal liver tyrosine kinase 3 ligand (Flt3L), CC subtype chemokine ligand 20 (CCL20), and granulocyte-macrophage colony-stimulating factor (GM-CSF) to assist traditional subcutaneous immunization of preparing high-affinity monoclonal antibodies, and further to develop high-performance immunoassay methods for CPP. Results: This novel immune strategy significantly enhanced immune response against CPP. Six anti-CPP monoclonal antibodies (mAbs) with high affinity were successfully screened and selected for application in a fully automated magnetic chemiluminescence immunoassay (CLIA). This robust and rapid assay can efficiently detect CPP in the range of 1.2–1250 pmol L–1 with a detection limit of 6.25 pmol L–1. Significantly, the whole incubation process can be completed in 30 min as compared to about 4.5 hr for the control ELISA kit. Furthermore, this assay exhibited high sensitivity and specificity, low intra-assay and inter-assay coefficients of variation (CVs < 15%). The developed assay was applied in the detection of CPP in 115 random serum samples and results showed a high correlation with data obtained using a commercially available ELISA kit (correlation coefficient, 0.9737). Conclusion: Our assay could be applied in the point-of-care testing of CPP in the serum samples, and also the method developed in this study could be adopted to explore the detection and diagnosis of other biomarkers for various diseases.
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Affiliation(s)
- Yu Wang
- College of Food Science and Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China
| | - Emmanuel Enoch Dzakah
- Dermatology Hospital, Southern Medical University, Guangzhou 510091, People's Republic of China.,Department of Molecular Biology and Biotechnology, School of Biological Sciences, College of Agriculture and Natural Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Ye Kang
- College of Food Science and Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China
| | - Yanxue Cai
- School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, People's Republic of China
| | - Peidian Wu
- National & Local United Engineering Lab of Rapid Diagnostic Test, Guangzhou Wondfo Biotech Co., Ltd, Guangzhou 5l0663, People's Republic of China
| | - Bo Tang
- National & Local United Engineering Lab of Rapid Diagnostic Test, Guangzhou Wondfo Biotech Co., Ltd, Guangzhou 5l0663, People's Republic of China
| | - Run Li
- National & Local United Engineering Lab of Rapid Diagnostic Test, Guangzhou Wondfo Biotech Co., Ltd, Guangzhou 5l0663, People's Republic of China
| | - Xiaowei He
- College of Food Science and Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China
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Zhang Z, Guan Y, Xu G, Guo C. A new washing-free immunosensor for tumor marker detection based on functionalized Fe3O4 submicron particles. Microchem J 2019. [DOI: 10.1016/j.microc.2019.03.064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Novel nanomaterial of porous graphene functionalized black phosphorus as electrochemical sensor platform for bisphenol A detection. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.01.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Li J, Li S, Huang L, Cui Y, She T, Bian Y, Li H. A light-initiated chemiluminescent assay for rapid quantitation of allergen-specific IgG 4 in clinical samples. Clin Chim Acta 2018; 489:83-88. [PMID: 30517849 DOI: 10.1016/j.cca.2018.11.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 11/06/2018] [Accepted: 11/30/2018] [Indexed: 01/22/2023]
Abstract
BACKGROUND An increase in allergen-specific IgG4 (sIgG4), which serves as a blocking antibody, is associated with acquisition of immune tolerance after immunotherapy. In this study, we developed a rapid, sensitive, and homogeneous immunoassay based on the light-initiated chemiluminescent assay (LICA) technology for quantifying allergen sIgG4 in serum samples. METHODS Allergen sIgG4 was measured in vitro by incubating the sample with biotinylated allergens and chemiluminescent beads coated with anti-human IgG4 antibody, followed by the addition of streptavidin-coated sensitizer beads. Multiple tests were performed to optimize the working conditions of the LICA and evaluate its performance. RESULTS We established the optimal concentration of biotinylated allergens (250 ng/mL), the optimal dilution range (1:8 for Gal d 1, Gal d 2 sIgG4 and 1:4 for Gal d 3, Gal d 4 sIgG4), and the optimal incubation time (20 min for Gal d 1, Gal d 2 sIgG4 and 40 min for Gal d 3, Gal d 4 sIgG4). The lower limit of quantification (LLOQ) was 0.261 ng/mL. The coefficient variation (CV) of the LICA was <10%. The assay was unaffected by general interfering substances at physiological concentrations. It exhibited excellent accuracy to detect allergen-sIgG4 in human serum. Additionally, we demonstrated that the levels of Gal d 1, Gal d 2, and Gal d 3-sIgG4 were significantly higher in the egg allergy group (p < .05), but no differences were found between the groups for Gal d 4-sIgG4. CONCLUSIONS The LICA demonstrated satisfactory performance and can be used for quantifying allergen sIgG4 in clinical practice.
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Affiliation(s)
- Junpu Li
- School of Medical Laboratory, Tianjin Medical University, 1 Guangdong Road, Hexi District, Tianjin 300203, China
| | - Shaoshen Li
- Academy of Traditional Chinese Medicine Affiliated Hospital, 354 Beima Road, Hongqiao District,Tianjin, China
| | - Lunhui Huang
- School of Medical Laboratory, Tianjin Medical University, 1 Guangdong Road, Hexi District, Tianjin 300203, China
| | - Yaqiong Cui
- School of Medical Laboratory, Tianjin Medical University, 1 Guangdong Road, Hexi District, Tianjin 300203, China
| | - Tiantian She
- School of Medical Laboratory, Tianjin Medical University, 1 Guangdong Road, Hexi District, Tianjin 300203, China
| | - Ying Bian
- School of Medical Laboratory, Tianjin Medical University, 1 Guangdong Road, Hexi District, Tianjin 300203, China
| | - Huiqiang Li
- School of Medical Laboratory, Tianjin Medical University, 1 Guangdong Road, Hexi District, Tianjin 300203, China.
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Cui Y, She T, Zhao H, Li J, Li L, Gao W, Li H. Competitive light-initiated chemiluminescent assay: using 5-α-dihydrotestosterone-BSA as competitive antigen for quantitation of total testosterone in human sera. Anal Bioanal Chem 2018; 411:745-754. [PMID: 30478516 DOI: 10.1007/s00216-018-1496-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 10/28/2018] [Accepted: 11/13/2018] [Indexed: 11/29/2022]
Abstract
This paper described a homogeneous method, light-initiated chemiluminescent assay (LICA), for quantitation of total testosterone in human sera. The assay was bead based and built on a competitive-binding reaction format, in which 5-α-dihydrotestosterone (5-α-DHT) competed with the testosterone in serum samples in binding with biotinylated anti-testosterone antibody. The more testosterone in the serum sample, the less 5-α-DHT that bonded with biotinylated anti-testosterone antibodies. 5-α-DHT was coupled with emission beads (doped with thioxene derivatives and Eu(III) as a chemiluminescence emitter) via bovine serum albumin as a linker. Once streptavidin-coated sensitizer beads (modified with phthalocyanine as a photosensitizer) were added, the streptavidin/biotin reaction between 5-α-DHT-bound anti-testosterone antibody and sensitizer beads could bring emission and sensitizer beads together, which allowed energy transfer from sensitizer bead to emission bead. As such, an exciting light (680 nm) impinging on the sensitizer beads led to light emission at 520-620 nm by emission beads. The strength of the emitted light was inversely proportional to the testosterone in serum sample. The detection range of this assay was from 13.3 to 1200 ng/dL. The coefficient variation for intra- and inter-assay was lower than 15%. The recovery of this method ranged from 95.5 to 105.9% for different samples. Moreover, the LICA assay was highly specific with low cross-reactivity and interference. The concentration of testosterone from 58 serum samples analyzed by the LICA method significantly correlated (y = 0.97x + 1.87, R2 = 0.970, p < 0.001) with those obtained with the SIEMENS Centaur Xp System. Graphical abstract ᅟ.
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Affiliation(s)
- Yaqiong Cui
- Department of Pharmacology, School of Basic Medicine, Tianjin Medical University, No. 22 Qixiangtai Road, Heping District, Tianjin, 300203, China
| | - Tiantian She
- Department of Clinical Immunology, School of Medical Laboratory, Tianjin Medical University, No. 1 Guangdong Road, Hexi District, Tianjin, 300203, China
| | - Hong Zhao
- Department of Clinical Immunology, School of Medical Laboratory, Tianjin Medical University, No. 1 Guangdong Road, Hexi District, Tianjin, 300203, China
| | - Jiuzhi Li
- Department of Clinical Laboratory, Tianjin Central Hospital of Gynecology Obstetrics, 156 Sanlu Road, Nankai District, Tianjin, 300052, China
| | - Liuxu Li
- Department of Clinical Immunology, School of Medical Laboratory, Tianjin Medical University, No. 1 Guangdong Road, Hexi District, Tianjin, 300203, China
| | - Weizhen Gao
- Department of Pharmacology, School of Basic Medicine, Tianjin Medical University, No. 22 Qixiangtai Road, Heping District, Tianjin, 300203, China
| | - Huiqiang Li
- Department of Clinical Immunology, School of Medical Laboratory, Tianjin Medical University, No. 1 Guangdong Road, Hexi District, Tianjin, 300203, China.
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Pyridoxal 5'-phosphate assay based on lucigenin chemiluminescence. Mikrochim Acta 2018; 185:381. [PMID: 30030633 DOI: 10.1007/s00604-018-2887-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 06/25/2018] [Indexed: 10/28/2022]
Abstract
The authors describe the first chemiluminescence (CL) based method for determination of pyridoxal 5'-phosphate (PLP). PLP is found to generate intense CL with lucigenin higher than that of the conventional lucigenin-H2O2 system by a factor of about 9.0. This new finding is used to be in a detection method for PLP via flow injection analysis (FIA). Response is linear in the 50 nM to 200 μM PLP concentration range with a correlation coefficient of 0.998, and the detection limit (at an S/N of 3) is 6.9 nM. The assay is highly selective over various amino acids, vitamins, sugars, coenzymes and metal ions cofactors. It exhibits advantages over the commonly employed HPLC methods in that it is rapid, more economic, eco-friendly and high throughput FIA detection of PLP without the need for toxic derivatization reagents, organic solvents, and HPLC instrumentation. The method was successfully applied to the determination of PLP in (spiked) human blood samples with recoveries in the range from 96.2-101.6% with % RSD < 4.0. The new system is also employed to determine lucigenin in the linear range of 0.3 to 100.0 μM with a correlation coefficient of 0.994 and the limit of detection is 0.04 μM. Graphical abstract Schematic of the chemiluminescent assay for pyridoxal 5'-phosphate (PLP). Lucigenin-PLP demonstrates 9-fold stronger chemiluminescence intensity than the lucigenin-H2O2 system. The detection limit of PLP is 6.9 nM. The method can detect PLP in human serum with good recoveries.
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Li Y, Zhang G, Mao X, Yang S, De Ruyck K, Wu Y. High sensitivity immunoassays for small molecule compounds detection – Novel noncompetitive immunoassay designs. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.04.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Ma HY, Zhao L, Wang DB, Zhang H, Guo LH. Dynamic Tracking of Highly Toxic Intermediates in Photocatalytic Degradation of Pentachlorophenol by Continuous Flow Chemiluminescence. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:2870-2877. [PMID: 29394042 DOI: 10.1021/acs.est.7b05518] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Photocatalytic degradation is a powerful technique for the decomposition of pollutants. However, toxic intermediates might be generated which have become a great concern recently. In the present work, a continuous flow chemiluminescence (CFCL) method was developed for dynamic monitoring of toxic intermediates generated in the photocatalytic degradation of pentachlorophenol (PCP). Among the main intermediates, tetrachloro-1,4-benzoquinone (TCBQ) and trichlorohydroxy-1,4-benzoquinone (OH-TrCBQ) showed higher or similar toxicity to PCP. As both TCBQ and OH-TrCBQ can produce chemiluminescence (CL) in the presence of H2O2, a CFCL system was established for the dynamic tracking of the two toxic intermediates. A PCP/TiO2 suspension was irradiated in a photoreactor, pumped continuously into a detection cell, and mixed with H2O2 to produce CL. The time-dependent CL response displayed two distinctive peaks at pH 7, which were attributed to the generation of OH-TrCBQ and TCBQ, respectively, by comparing with their changes measured by high-performance liquid chromatography (HPLC). Furthermore, the CL response curve of PCP/TiO2 suspension showed a pattern very similar to their bacteria inhibition. Therefore, the CFCL could be used as a simple and low-cost method for online monitoring of TCBQ and OH-TrCBQ to ensure complete removal of not only PCP but also highly toxic degradation intermediates.
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Affiliation(s)
- Hai-Yan Ma
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-environmental Sciences , Chinese Academy of Sciences , 18 Shuangqing Road , P.O. Box 2871, Beijing 100085 , China
- University of Chinese Academy of Sciences , Beijing 100039 , China
| | - Lixia Zhao
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-environmental Sciences , Chinese Academy of Sciences , 18 Shuangqing Road , P.O. Box 2871, Beijing 100085 , China
- University of Chinese Academy of Sciences , Beijing 100039 , China
| | - Da-Bin Wang
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-environmental Sciences , Chinese Academy of Sciences , 18 Shuangqing Road , P.O. Box 2871, Beijing 100085 , China
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences & Laboratory of Risk Assessment for Tobacco Products , 11 Keyuan Four Road , Qingdao , Shandong 266101 , China
| | - Hui Zhang
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-environmental Sciences , Chinese Academy of Sciences , 18 Shuangqing Road , P.O. Box 2871, Beijing 100085 , China
| | - Liang-Hong Guo
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-environmental Sciences , Chinese Academy of Sciences , 18 Shuangqing Road , P.O. Box 2871, Beijing 100085 , China
- University of Chinese Academy of Sciences , Beijing 100039 , China
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Spectrofluorimetric determination of bisphenol A in tap waters by exploiting liquid-liquid microextraction in a sequential injection system. Microchem J 2018. [DOI: 10.1016/j.microc.2017.12.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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