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Boonyayothin W, Kobtrakul K, Khositanon P, Vimolmangkang S, Phoolcharoen W. Development of a plant-produced recombinant monoclonal antibody against Δ-9-tetrahydrocannabinol (Δ9-THC) for immunoassay application. BIOTECHNOLOGY REPORTS 2022; 34:e00725. [PMID: 35686006 PMCID: PMC9171438 DOI: 10.1016/j.btre.2022.e00725] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/23/2022] [Accepted: 03/24/2022] [Indexed: 11/20/2022]
Abstract
This is the first report of the production of anti- Δ9-THC mAb in N. benthamiana which are the cost-effective and rapidly production platform. Moreover, plant-produced mAb provide the efficiency against Δ9-THC and it can be applied for the further immunoassay application.
Δ-9-tetrahydrocannabinol (Δ9-THC) is mainly a psychoactive compound in the cannabis plant. The immunoassay, an alternative method to HPLC and GC, can be used to analyze and measure Δ9-THC. This method provides high sensitivity and specificity by using antibodies specific to the desired substances. Currently, plants provide several benefits over traditional expression platforms to produce recombinant antibodies, such as lower production costs and scalability. Therefore, this study aims to produce a recombinant anti-Δ9-THC monoclonal antibody (mAb) with transient expression using N. benthamiana. The highest expression level of the plant-produced mAb was estimated to be 0.33 ug/g leaf fresh weight. Our results demonstrate that the antibody provided in vitro affinity binding related to Δ9-THC and the metabolites of Δ9-THC, such as cannabinol (CBN). Moreover, the antibody also showed binding efficiency with Δ9-THC in cannabis extract. Moreover, plant-produced mAbs provide efficiency against Δ9-THC and can be applied for further immunoassay applications.
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Affiliation(s)
- Wanuttha Boonyayothin
- Center of Excellence in Plant-Produced Pharmaceuticals, Chulalongkorn University, Bangkok, Thailand
- Pharmaceutical Sciences and Technology Program, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Khwanlada Kobtrakul
- Pharmaceutical Sciences and Technology Program, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Petlada Khositanon
- Research Cluster for Cannabis and its Natural Substances, Chulalongkorn University, Bangkok, Thailand
| | - Sornkanok Vimolmangkang
- Center of Excellence in Plant-Produced Pharmaceuticals, Chulalongkorn University, Bangkok, Thailand
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
- Research Cluster for Cannabis and its Natural Substances, Chulalongkorn University, Bangkok, Thailand
| | - Waranyoo Phoolcharoen
- Center of Excellence in Plant-Produced Pharmaceuticals, Chulalongkorn University, Bangkok, Thailand
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
- Corresponding author at: Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand.
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Su H, Huang MZ, Shiea J, Lee CW. Thermal desorption ambient ionization mass spectrometry for emergency toxicology. MASS SPECTROMETRY REVIEWS 2022:e21784. [PMID: 35603997 DOI: 10.1002/mas.21784] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/17/2021] [Accepted: 01/21/2022] [Indexed: 06/15/2023]
Abstract
In the emergency department, it is important to rapidly identify the toxic substances that have led to acute poisoning because different toxicants or toxins cause poisoning through different mechanisms, requiring disparate therapeutic strategies and precautions against contraindicating actions, and diverse directions of clinical course monitoring and prediction of prognosis. Ambient ionization mass spectrometry, a state-of-the-art technology, has been proved to be a fast, accurate, and user-friendly tool for rapidly identifying toxicants like residual pesticides on fruits and vegetables. In view of this, developing an analytical platform that explores the application of such a cutting-edge technology in a novel direction has been initiated a research program, namely, the rapid identification of toxic substances which might have caused acute poisoning in patients who visit the emergency department and requires an accurate diagnosis for correct clinical decision-making to bring about corresponding data-guided management. This review includes (i) a narrative account of the breakthrough in emergency toxicology brought about by the advent of ambient ionization mass spectrometry and (ii) a thorough discussion about the clinical implications and technical limitations of such a promising innovation for promoting toxicological tests from tier two-level to tier one level.
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Affiliation(s)
- Hung Su
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Min-Zong Huang
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Jentaie Shiea
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chi-Wei Lee
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung, Taiwan
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Song G, Zhang J, Huang H, Wang X, He X, Luo Y, Li JC, Huang K, Cheng N. Single-atom Ce-N-C nanozyme bioactive paper with a 3D-printed platform for rapid detection of organophosphorus and carbamate pesticide residues. Food Chem 2022; 387:132896. [PMID: 35421648 DOI: 10.1016/j.foodchem.2022.132896] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/13/2022] [Accepted: 04/03/2022] [Indexed: 12/27/2022]
Abstract
Rapid detection of pesticide residues based on enzyme mimics has recently attracted much interest. However, most nanozymes have low activity. Herein, a "single-atom Ce-N-C nanozyme" (SACe-N-C nanozyme) was rationally devised and verified to mimic peroxidase (POD-like) with superior activity. Based on its high POD-like activities and cascaded catalytic reactions with acetylcholinesterase (AChE), we constructed a bioactive paper for the detection of pesticide residues, which offered a portable approach to monitor fruits and vegetables within 30 min. More importantly, a 3D printed platform was integrated on the basis of SACe-N-C bioactive paper to achieve on-site portable testing of omethoate, methamidophos, carbofuran, and carbosulfan, showing limits of detection (LODs) of 55.83, 71.51, 81.81, and 74.98 ng/mL, respectively. The recovery rates were 84.09-104.68%. This study provided new insight into the design of novel single-atom nanozymes for cascaded catalytic detection and other rapid detection applications with high efficiency and low cost.
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Affiliation(s)
- Guangchun Song
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Junjie Zhang
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Huixian Huang
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Xin Wang
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Xiaoyun He
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yunbo Luo
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Jin-Cheng Li
- Faculty of Chemical Engineering, Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus, Chemical Engineering and New Phosphorus Materials, Kunming University of Science and Technology, Kunming 650000, China.
| | - Kunlun Huang
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety), Ministry of Agriculture, Beijing 100083, China.
| | - Nan Cheng
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
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Tian X, Zhao Z, Wang H, Qin Y, Wang D, Li Y, Wang X, Wang L. An immunochromatographic test strip for on-site detection of Ralstonia solanacearum in tobacco leaves and soil. Anal Biochem 2022; 641:114561. [PMID: 35077670 DOI: 10.1016/j.ab.2022.114561] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 01/11/2022] [Accepted: 01/13/2022] [Indexed: 11/01/2022]
Abstract
Tobacco bacterial wilt is one of the most devastating soil-borne diseases in tobacco-producing regions worldwide. It is often responsible for significant economic losses during tobacco production. A rapid, specific, and high-throughput on-site detection method is important for plant disease management. In this study, monoclonal antibody 3H3 and polyclonal antibody 0344 specific for Ralstonia solanacearum were used to prepare a colloidal gold-based immunochromatographic test strip (ITS). Under optimal conditions, the detection limit of the ITS was 105 CFU/mL. The ITS was able to detect different R. solanacearum strains collected from Shandong, Yunnan, Guizhou, and Sichuan provinces in China. Moreover, the ITS was highly specific for R. solanacearum, with no cross-reactivity with Alternaria alternata (Fries) Keissler, Pseudomonas syringae pv. angulata, and P. syringae pv. tabaci. Furthermore, R. solanacearum-spiked tobacco leaves and soil were used to evaluate the matrix interference of the developed ITS, which indicated the test strip was unaffected by leaf size or soil abundance.
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Affiliation(s)
- Xuehui Tian
- Department of Phytopathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zichen Zhao
- Department of Phytopathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
| | - Huimeng Wang
- Department of Phytopathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuling Qin
- Department of Phytopathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
| | - Dongkun Wang
- Department of Plant Protection, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Yichi Li
- Department of Plant Protection, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Xiaoqiang Wang
- Department of Plant Protection, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China.
| | - Limin Wang
- Department of Phytopathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China.
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Karimi-Maleh H, Karimi F, Fu L, Sanati AL, Alizadeh M, Karaman C, Orooji Y. Cyanazine herbicide monitoring as a hazardous substance by a DNA nanostructure biosensor. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:127058. [PMID: 34488091 DOI: 10.1016/j.jhazmat.2021.127058] [Citation(s) in RCA: 99] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/17/2021] [Accepted: 08/26/2021] [Indexed: 05/13/2023]
Abstract
Cyanazine is a beneficial herbicide in the triazines group that inhibits photosynthesis in plants and monitoring of this herbicide is so important for study agriculture products. The present researches have been focused on monitoring of cyanazine by a straightforward and fast electrochemical strategy. Herein, to monitor the cyanazine level, Pt and Pd doped CdO nanoparticle decorated SWCNTs composite (Pt-Pd-CdO/SWCNTs) has been synthesized as a conductive mediator and characterized by EDS, SEM and TEM techniques. The Pt-Pd-CdO/SWCNTs and ds-DNA have been used for modification of the gold electrode (GE). Moreover, the oxidation signal of guanine relative to ds-DNA at the surface of Pt-Pd-CdO/SWCNTs/ds-DNA/GE has been considered as an bioelectroanalytical issue to monitoring cyanazine for the first time. Electrochemical impedance spectroscopic (EIS) signals have confirmed that the inclusion of Pt-Pd-CdO/SWCNTs at the surface of the GE has lowered charge-transfer resistance by ca.1.54 times and created a highly conductive state for monitoring of cyanazine in nanomolar concentration. On the other hand, differential pulse voltammograms (DPV) of Pt-Pd-CdO/SWCNTs/ds-DNA/GE have indicated a linear dynamic range of 4.0 nM-70 µM with a detection limit of 0.8 nM to the monitoring of cyanazine. In addition, the molecular docking study has emphasized that cyanazine herbicide is capable of binding to ds-DNA preferably at the guanine-cytosine rich sequences, and confirmed experimental results. In the final step, Pt-Pd-CdO/SWCNTs/ds-DNA/GE has been successfully utilized for the monitoring of cyanazine herbicide in food and water samples.
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Affiliation(s)
- Hassan Karimi-Maleh
- School of Resources and Environment, University of Electronic Science and Technology of China, P.O. Box 611731, Xiyuan Ave, Chengdu, PR China; Department of Chemical Engineering and Energy, Quchan University of Technology, Quchan 9477177870, Iran
| | - Fatemeh Karimi
- Department of Chemical Engineering and Energy, Quchan University of Technology, Quchan 9477177870, Iran.
| | - Li Fu
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China
| | - Afsaneh L Sanati
- Institute of Systems and Robotics, Department of Electrical and Computer Engineering, University of Coimbra, Polo II, 3030-290 Coimbra, Portugal
| | - Marzieh Alizadeh
- Laboratory of Basic Sciences, Mohammad Rasul Allah Research Tower, Shiraz University of Medical Sciences, Shiraz 71348-14336, Iran
| | - Ceren Karaman
- Akdeniz University, Department of Electricity and Energy, Antalya 07070, Turkey
| | - Yasin Orooji
- College of Materials Science and Engineering, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, PR China
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Kormosh ZA, Zhurba ES, Antal IP, Kormosh AZ, Bazel YR. Spectrophotometric Determination of 2,4-Dichlorophenoxyacetic Acid Using Extraction with Astrafloxin. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s1061934820070114] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Liu Z, Wang K, Wu S, Wang Z, Ding G, Hao X, Li QX, Li J, Gee SJ, Hammock BD, Xu T. Development of an immunoassay for the detection of carbaryl in cereals based on a camelid variable heavy-chain antibody domain. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:4383-4390. [PMID: 30851058 PMCID: PMC7061733 DOI: 10.1002/jsfa.9672] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 03/04/2019] [Accepted: 03/04/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND The variable domain of camelid heavy-chain antibodies (VHH) is increasingly being adapted to detect small molecules in various matrices. The insecticide carbaryl is widely used in agriculture while its residues have posed a threat to food safety and human health. RESULTS VHHs specific for carbaryl were generated from an alpaca immunized with the hapten CBR1 coupled to keyhole limpet hemocyanin. An enzyme-linked immunosorbent assay (ELISA) based on the VHH C1 and the coating antigen CBR2-BSA was developed for the detection of carbaryl in cereals. This assay, using an optimized assay buffer (pH 6.5) containing 10% methanol and 0.8% NaCl, has a half-maximum signal inhibition concentration of 5.4 ng mL-1 and a limit of detection (LOD) of 0.3 ng mL-1 for carbaryl, and shows low cross reactivity (≤0.8%) with other tested carbamates. The LOD of carbaryl using the VHH-based ELISA was 36 ng g-1 in rice and maize and 72 ng g-1 in wheat. Recoveries of carbaryl in spiked rice, maize and wheat samples were in the range of 81-106%, 96-106% and 83-113%, respectively. Relative standard deviations of repeatability and intra-laboratory reproducibility were in the range of 0.8-9.2% and 2.9-9.7%, respectively. CONCLUSION The VHH-based ELISA was highly effective in detecting carbaryl in cereal samples after simple sample extraction and dilution. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Zhiping Liu
- Department of ecological science and engineering, Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Kai Wang
- Department of ecological science and engineering, Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Sha Wu
- Department of ecological science and engineering, Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Zhanhui Wang
- Department of basic veterinary medicine, Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, Beijing, China
| | - Guochun Ding
- Department of ecological science and engineering, Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Xiujing Hao
- Key lab of ministry of education for protection and utilization of special biological resources in western China, College of Life Science, Ningxia University, Ningxia, China
| | - Qing X Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI, USA
| | - Ji Li
- Department of ecological science and engineering, Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Shirley J Gee
- Department of Entomology and UCD Comprehensive Cancer Center, University of California, Davis, CA, USA
| | - Bruce D Hammock
- Department of Entomology and UCD Comprehensive Cancer Center, University of California, Davis, CA, USA
| | - Ting Xu
- Department of ecological science and engineering, Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
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Photoelectrochemical determination of malathion by using CuO modified with a metal-organic framework of type Cu-BTC. Mikrochim Acta 2019; 186:481. [PMID: 31250184 DOI: 10.1007/s00604-019-3597-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 06/09/2019] [Indexed: 10/26/2022]
Abstract
A photoelectrochemical (PEC) sensor was constructed for the detection of non-electroactive malathion. It is based on the use of a hierarchical CuO material derived from a Cu-BTC metal-organic framework (where BTC stands for benzene-1,3,5-tricarboxylic acid). The modified CuO was obtained by calcination of Cu-BTC at a high temperature (300 °C) and possesses a high photocurrent conversion efficiency. Under irradiation with visible light and in the presence of malathion, the formation of the CuO-malathion complex on the CuO gave rise to an increase in steric hindrance. This results in a decrease in photocurrent. This novel PEC detection method has a lower detection limit of 8.6 × 10-11 mol L-1 and a wide linear range (1.0 × 10-10 ~ 1.0 × 10-5 mol L-1). Graphical abstract Schematic presentation of the Cu-BTC MOF derived photoelectrochemical sensor for non-electroactive malathion detection.
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Competitive and noncompetitive immunoassays for the detection of benzothiostrobin using magnetic nanoparticles and fluorescein isothiocyanate-labeled peptides. Anal Bioanal Chem 2018; 411:527-535. [PMID: 30478514 DOI: 10.1007/s00216-018-1478-8] [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: 07/16/2018] [Revised: 10/28/2018] [Accepted: 11/06/2018] [Indexed: 01/04/2023]
Abstract
Phage-displayed peptides have been proven to be powerful reagents for competitive and noncompetitive immunoassays. However, they are unconventional reagents, which greatly limit their analytical commercial applications and require additional reagents for detection. In this work, the peptides that specifically bind with anti-benzothiostrobin monoclonal antibody (mAb) or benzothiostrobin-mAb immunocomplex were synthesized and conjugated with fluorescein isothiocyanate (FITC) as substitutes of the phage-displayed peptides to avoid their shortcomings and extend their applications. Competitive and noncompetitive fluorescence immunoassays (FIAs) for benzothiostrobin were developed by mAb coupling with magnetic nanoparticles as concentration elements and peptides conjugated with FITC as tracers. Compared with enzyme-linked immunosorbent assays, the FIAs reduced the number of steps from 6 to 2 and analysis time from more than 5 to 1.2 h. The competitive FIA showed the half-maximal inhibition concentration (IC50) of 16.8 ng mL-1 and detection range (IC10-IC90) of 1.0-759.9 ng mL-1, while the concentration of analyte producing 50% saturation of the signal (SC50) and detection range (SC10-SC90) of noncompetitive FIA were 93.4 and 5.9-788.2 ng mL-1, respectively. The average spiked recoveries were 68.33-98.50% and 73.33-96.67% for competitive and noncompetitive FIAs, respectively. The FIAs showed good correlation with high-performance liquid chromatography for the detection of benzothiostrobin in authentic samples. Graphical abstract Development of competitive and noncompetitive fluorescence immunoassays for benzothiostrobin by using monoclonal antibody coupling with magnetic nanoparticles as concentration elements and peptides conjugated with fluorescein isothiocyanate as tracers.
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Esteve-Turrillas FA, Mercader JV, Agulló C, Abad-Somovilla A, Abad-Fuentes A. Highly sensitive monoclonal antibody-based immunoassays for boscalid analysis in strawberries. Food Chem 2018; 267:2-9. [DOI: 10.1016/j.foodchem.2017.06.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 04/10/2017] [Accepted: 06/02/2017] [Indexed: 10/19/2022]
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Watanabe E, Miyake S. Direct determination of neonicotinoid insecticides in an analytically challenging crop such as Chinese chives using selective ELISAs. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2018; 53:707-712. [PMID: 29869926 DOI: 10.1080/03601234.2018.1480154] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 04/30/2018] [Indexed: 05/19/2023]
Abstract
Easy-to-use commercial kit-based enzyme-linked immunosorbent assays (ELISAs) have been used to detect neonicotinoid dinotefuran, clothianidin and imidacloprid in Chinese chives, which are considered a troublesome matrix for chromatographic techniques. Based on their high water solubility, water was used as an extractant. Matrix interference could be avoided substantially just diluting sample extracts. Average recoveries of insecticides from spiked samples were 85-113%, with relative standard deviation of <15%. The concentrations of insecticides detected from the spiked samples with the proposed ELISA methods correlated well with those by the reference high-performance liquid chromatography (HPLC) method. The residues analyzed by the ELISA methods were consistently 1.24 times that found by the HPLC method, attributable to loss of analyte during sample clean-up for HPLC analyses. It was revealed that the ELISA methods can be applied easily to pesticide residue analysis in troublesome matrix such as Chinese chives.
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Affiliation(s)
- Eiki Watanabe
- a Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO) , Tsukuba , Ibaraki , Japan
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12
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Wei D, Fang G, Wang S. An effective strategy for preparation of a polyclonal antibody with an addition of carbon chain of ciprofloxacin. EUR J INFLAMM 2018. [DOI: 10.1177/2058739218805645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this study, we synthesized amino propyl ciprofloxacin (CPLX-NH2) as a ciprofloxacin (CPLX) derivative. Moreover, the immune antigen CPLX-NH2-BSA and coating antigen CPLX-NH2-OVA were prepared via CPLX-NH2 coupling with bovine serum albumin (BSA) and ovalbumin (OVA), respectively. Subsequently, the Kunming mice were immunized with immune antigen to obtain the polyclonal antibody with high titer. The regression equation of CPLX-NH2 antibody was y = –17.395x + 89.331 (R2 = 0.9961); IC50 and limit of detection (LOD) were 182.39 and 20.09 ng/mL, respectively. These results were superior to that of CPLX antibody. Meanwhile, the CPLX-NH2 antibody showed cross-reactivity to fluoroquinolones (FQNs) residues. The results of the study indicated that the proper modification of the drug, namely, the addition of a suitable spacer arm between the drug and the carrier protein will improve the efficacy of the antibody, which is a favorable concept for preparation of antibody.
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Affiliation(s)
- Dong Wei
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin, P.R. China
- Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, Food Safety Research Center, Hebei North University, Zhangjiakou, P.R. China
| | - Guozhen Fang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin, P.R. China
| | - Shuo Wang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin, P.R. China
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Ding Y, Hua X, Sun N, Yang J, Deng J, Shi H, Wang M. Development of a phage chemiluminescent enzyme immunoassay with high sensitivity for the determination of imidaclothiz in agricultural and environmental samples. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 609:854-860. [PMID: 28783899 DOI: 10.1016/j.scitotenv.2017.07.214] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 07/21/2017] [Accepted: 07/21/2017] [Indexed: 06/07/2023]
Abstract
In this study, we isolated six phage-displayed peptides by biopanning phage-displayed peptide libraries on an immobilized anti-imidaclothiz monoclonal antibody. After analyzing the relative sensitivity of the individual phage-displayed peptides, we subsequently developed and optimized both a phage enzyme immunoassay (P-ELISA) and a phage chemiluminescent enzyme immunoassay (P-CLEIA) to improve the sensitivity and linear range of imidaclothiz assays. The P-CLEIA (50% inhibition concentration (IC50) of 0.86ngmL-1, linear range of 0.13-5.84ngmL-1) was more sensitive and had a wider linear range compared to the P-ELISA (IC50 of 1.45ngmL-1, linear range of 0.55-3.82ngmL-1). Besides, the sensitivities of the P-ELISA and P-CLEIA were increased by >4-fold and 8-fold, respectively as compared to homologous immunoassays developed using the same monoclonal antibody. Neither method had significant cross-reactivity with the analogues of imidaclothiz except for imidacloprid. Recoveries of the P-ELISA and P-CLEIA for imidaclothiz in paddy water, soil, cabbage, rice, apple, pakchoi, pear and tomato samples were 72.3-101.3% and 73.9-102.6%, respectively. The P-ELISA and P-CLEIA detected imidaclothiz in the authentic samples, and showed good correlation with results obtained from high-performance liquid chromatography (HPLC).
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Affiliation(s)
- Yuan Ding
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Xiude Hua
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China.
| | - Nana Sun
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Jiachuan Yang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Jiaqi Deng
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Haiyan Shi
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Minghua Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
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14
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Feng X, Zhang G, Chin LK, Liu AQ, Liedberg B. Highly Sensitive, Label-Free Detection of 2,4-Dichlorophenoxyacetic Acid Using an Optofluidic Chip. ACS Sens 2017; 2:955-960. [PMID: 28750515 DOI: 10.1021/acssensors.7b00217] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A highly sensitive approach for rapid and label-free detection of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) using an optofluidic chip is demonstrated. The optofluidic chip is prepared by covalent immobilization of 2,4-D-bovine serum albumin (2,4-D-BSA) conjugate to an integrated microring resonator. Subsequent detection of 2,4-D carried out in a competitive immunoreaction format enables selective detection of 2,4-D in different types of water samples, including bottled, tap, and lake water, at a limit of detection (LOD) of 4.5 pg/mL and in a quantitative range of 15-105 pg/mL. The microring resonator-based optofluidic chip is reusable with ultrahigh sensitivity that offers real-time and on-site detection of low-molecular-weight targets for potential applications in food safety and environmental monitoring.
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Affiliation(s)
- Xueling Feng
- Centre
for Biomimetic Sensor Science, School of Materials Science and Engineering, Nanyang Technological University, Singapore 637553
| | - Gong Zhang
- School
of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798
| | - Lip Ket Chin
- School
of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798
| | - Ai Qun Liu
- School
of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798
| | - Bo Liedberg
- Centre
for Biomimetic Sensor Science, School of Materials Science and Engineering, Nanyang Technological University, Singapore 637553
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15
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Barnych B, Vasylieva N, Joseph T, Hulsizer S, Nguyen HM, Cajka T, Pessah I, Wulff H, Gee SJ, Hammock BD. Development of Tetramethylenedisulfotetramine (TETS) Hapten Library: Synthesis, Electrophysiological Studies, and Immune Response in Rabbits. Chemistry 2017; 23:8466-8472. [PMID: 28411375 PMCID: PMC5808876 DOI: 10.1002/chem.201700783] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 04/08/2017] [Indexed: 11/06/2022]
Abstract
There is a need for fast detection methods for the banned rodenticide tetramethylenedisulfotetramine (TETS), a highly potent blocker of the γ-aminobutyric acid (GABAA ) receptors. General synthetic approach toward two groups of analogues was developed. Screening of the resulting library of compounds by FLIPR or whole-cell voltage-clamp revealed that, despite the structural differences, some of the TETS analogues retained GABAA receptor inhibition; however, their potency was an order of magnitude lower. Antibodies raised in rabbits against some of the TETS analogues conjugated to protein recognized free TETS and will be used for the development of an immunoassay for TETS.
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Affiliation(s)
- Bogdan Barnych
- Department of Entomology and Nematology, and UCD Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, United States
| | - Natalia Vasylieva
- Department of Entomology and Nematology, and UCD Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, United States
| | - Tom Joseph
- Department of Entomology and Nematology, and UCD Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, United States
| | - Susan Hulsizer
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California Davis, Davis, California, 95616, United States
| | - Hai M Nguyen
- Department of Pharmacology, School of Medicine, University of California Davis, Davis, California, 95616, United States
| | - Tomas Cajka
- UC Davis Genome Center-Metabolomics, University of California Davis, Davis, California, 95616, United States
| | - Isaac Pessah
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California Davis, Davis, California, 95616, United States
| | - Heike Wulff
- Department of Pharmacology, School of Medicine, University of California Davis, Davis, California, 95616, United States
| | - Shirley J Gee
- Department of Entomology and Nematology, and UCD Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, United States
| | - Bruce D Hammock
- Department of Entomology and Nematology, and UCD Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, United States
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16
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Vasylieva N, Barnych B, Rand A, Inceoglu B, Gee SJ, Hammock BD. Sensitive Immunoassay for Detection and Quantification of the Neurotoxin, Tetramethylenedisulfotetramine. Anal Chem 2017; 89:5612-5619. [PMID: 28398746 PMCID: PMC5920647 DOI: 10.1021/acs.analchem.7b00846] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Tetramethylenedisulfotetramine (TETS, tetramine) is a formerly used and highly neurotoxic rodenticide. Its lethality, recent history of intentional use for mass poisoning, and the absence of a known antidote raise public health concerns. Therefore, rapid, high throughput, and sensitive methods for detection and quantification of TETS are critical. Instrumental analysis method such as GC/MS is sensitive but not rapid or high throughput. Therefore, an immunoassay selective to TETS was developed. The assay shows an IC50 of 4.5 ± 1.2 ng/mL, with a limit of detection of 0.2 ng/mL, comparable to GC/MS. Performance of the immunoassay was demonstrated by a recovery study using known concentrations of TETS spiked into buffer and human and mouse serum matrices giving recoveries in the range of 80-120%. The assay demonstrated good correlation in TETS recovery with established GC/MS analysis. The immunoassay was then used to quantify TETS concentration in the serum of mice exposed to 2× LD50 dose of TETS and to monitor kinetics of TETS clearance from blood over a short period of time. TETS concentration in the serum reached 150 ng/mL without significant change over 4 h post-treatment. Results obtained with the immunoassay had good correlation with GC/MS analysis. Overall, this immunoassay is an important tool to rapidly detect and quantify levels of TETS from biological samples with high sensitivity. The assay can be adapted to multiple formats including field or hospital use.
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Affiliation(s)
- Natalia Vasylieva
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis , Davis, California 95616, United States
| | - Bogdan Barnych
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis , Davis, California 95616, United States
| | - Amy Rand
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis , Davis, California 95616, United States
| | - Bora Inceoglu
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis , Davis, California 95616, United States
| | - Shirley J Gee
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis , Davis, California 95616, United States
| | - Bruce D Hammock
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis , Davis, California 95616, United States
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17
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Hua X, Ding Y, Yang J, Ma M, Shi H, Wang M. Direct competitive fluoroimmunoassays for detection of imidaclothiz in environmental and agricultural samples using quantum dots and europium as labels. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 583:222-227. [PMID: 28117157 DOI: 10.1016/j.scitotenv.2017.01.056] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 01/09/2017] [Accepted: 01/10/2017] [Indexed: 06/06/2023]
Abstract
A direct quantum dots-based fluoroimmunoassay (QDFIA) and a time-resolved fluoroimmunoassay (TRFIA) for imidaclothiz (IMI) were developed by using the quantum dots (QDs)-labeled antibody and the europium (Eu3+)-labeled antibody, respectively. After optimization, the half-maximal inhibition concentration (IC50) and the limit of detection (LOD, IC10) are 20.41 and 0.52μgL-1 for the QDFIA, while 6.91 and 0.018μgL-1 for the TRFIA, respectively. The cross-reactivities (CRs) with the analogues are negligible except for imidacloprid with CRs of 29.0% for the QDFIA and 26.6% for the TRFIA. The spiked recoveries of IMI in paddy water, soil, pear, tomato, rice, apple, cabbage and cucumber are 72.7-117.6% with a standard deviation (RSD) of 2.4-13.5% for the QDFIA, and 81.3-117.7% with a RSD of 1.6-7.5% for TRFIA. The detection results of the analyses for the real paddy water and pear samples are markedly correlated with these of high-performance liquid chromatography (HPLC).
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Affiliation(s)
- Xiude Hua
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Yuan Ding
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Jiachuan Yang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Ming Ma
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Haiyan Shi
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Minghua Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China.
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18
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You H, Hua X, Feng L, Sun N, Rui Q, Wang L, Wang M. Competitive immunoassay for imidaclothiz using upconversion nanoparticles and gold nanoparticles as labels. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2097-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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19
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20
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Zhu M, Zhang WN, Tian JY, Zhao WY, Chen ZQ, Sun LH, Xue F, Liu Y, Tan XQ, Wang LM, Liu FQ, Tao XR. Development of a lateral-flow assay (LFA) for rapid detection of Soybean mosaic virus. J Virol Methods 2016; 235:51-57. [PMID: 27235541 DOI: 10.1016/j.jviromet.2016.05.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 05/02/2016] [Accepted: 05/15/2016] [Indexed: 10/21/2022]
Abstract
Soybean mosaic virus (SMV) is the most common virus in soybean and poses a serious threat to crop production and germplasm recession in many countries worldwide. In this study, a highly practical and rapid lateral-flow assay (LFA) was developed for the detection of SMV. The SMV coat protein (CP) was prokaryotically expressed and purified to immunize mice. After generation of hybridoma cell lines, four anti-SMV monoclonal antibodies were selected. The LFA-strip was then assembled using a double-antibody sandwich strategy. When the SMV-infected leaf sample was assayed using the assembled LFA-strip, the positive pink color appeared in the test line within 5-10min. The strip only gave positive results with SMV and not other viruses tested and could be used to detect 800 fold dilutions of infected leaf samples. The LFA could be used to detect SMV in infected leaf tissue as well as soybean seeds. To our knowledge, this is the first report of the development of a LFA for the detection of SMV. The practical, rapid and specific assay that was developed in this study can be widely applied to the diagnosis and surveillance of SMV in the laboratory and the field.
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Affiliation(s)
- Min Zhu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China
| | - Wen-Na Zhang
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jin-Yan Tian
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China
| | - Wen-Yang Zhao
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China
| | - Zheng-Qiang Chen
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China
| | - Li-Hua Sun
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China
| | - Fan Xue
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China
| | - Yong Liu
- Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Xin-Qiu Tan
- Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Li-Min Wang
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China
| | - Feng-Quan Liu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiao-Rong Tao
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China.
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21
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Liu Y, Li Y, Chang R, Zheng H, Li M, Hu Z, Zhou Y, Wang B. Identification of Proteinaceous Binders in Ancient Tripitaka by the Use of an Enzyme-linked Immunosorbent Assay. ANAL SCI 2016; 32:735-40. [PMID: 27396653 DOI: 10.2116/analsci.32.735] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Proteinaceous materials, such as ovabumin and collagen, were commonly used as binding media, and as adhesives and protective coatings. However, the identification of ancient proteinaceous binders is a great challenge for archaeologists, due to their limited sample size, complex combinations of various ingredients and reduced availability of the binder during the process of protein degradation. In this paper, an enzyme-linked immunosorbent assay (ELISA) provides to be a particularly promising method for the detection of proteinaceous binding materials in ancient relics. The present work focused on the specific identification of proteins in archaeological binders, which was brushed on the Tripitaka. Two samples, the adhesion area (S1) and the ink area (S2), were tested by ELISA. The results showed that both S1 and S2 reacted positively when treated with an anti-collagen-I antibody. It proved the existence of proteinaceous binders in Ancient Tripitaka, and the percentage of collagen in S1 and S2 was 61.44 and 15.4%, respectively. Compared with other conventional techniques, ELISA has advantages of high specificity, sensitivity, rapidity and low cost, making it especially suitable for the protein detection in the archaeological field.
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Affiliation(s)
- Yi Liu
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University
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22
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Lee CW, Su H, Chen PY, Lin SJ, Shiea J, Shin SJ, Chen BH. Rapid identification of pesticides in human oral fluid for emergency management by thermal desorption electrospray ionization/mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2016; 51:97-104. [PMID: 26889925 DOI: 10.1002/jms.3719] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 10/15/2015] [Accepted: 10/19/2015] [Indexed: 06/05/2023]
Abstract
Self-poisoning with pesticides accounts for approximately one-third of all suicides worldwide. To expedite rescue in the emergency department, it is essential to develop a point-of-care analytical method for rapid identification of ingested pesticides. In this study, five of the most common pesticides ingested by self-poisoning patients in Taiwan were analyzed from oral fluid samples. Pesticide-oral fluid mixtures were applied on a cotton swab and then transferred into methanol. A metallic probe was used to sample the methanol solution for subsequent thermal desorption-electrospray ionization mass spectrometry analysis. Altogether, pesticide sampling, transfer, desorption, ionization, and detection took less than 1 min. The reproducibility of this method (n = 6) was shown in the observed low-relative standard deviation (<7%) in the detection of pesticide in oral fluid. The detection limits of the pesticides in oral fluid obtained from four human subjects by thermal desorption-electrospray ionization mass spectrometry were between 1-10 ppb with relative standard deviation 10.7%. Moreover, in this study, linear responses of five pesticides in oral fluid with concentrations between 1 ppb-1 ppm (R2 between 0.9938 and 0.9988) were observed. As the whole analytical process is extremely short, this technique allows for early non-invasive point-of-care identification of pesticides in the oral fluid of self-poisoning patients in the emergency room, providing important toxicological information for decision-making during critical resuscitation.
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Affiliation(s)
- Chi-Wei Lee
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Emergency Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Hung Su
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Peng-Yu Chen
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Shiang-Jiun Lin
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Jentaie Shiea
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Shyi-Jang Shin
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Bai-Hsiun Chen
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
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23
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Esteve-Turrillas FA, Mercader JV, Agulló C, Abad-Somovilla A, Abad-Fuentes A. Site-heterologous haptens and competitive monoclonal antibody-based immunoassays for pyrimethanil residue analysis in foodstuffs. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2015.03.074] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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24
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Sathe M, Srivastava S, Merwyn S, Agarwal GS, Kaushik MP. Competitive immunochromatographic assay for the detection of thiodiglycol sulfoxide, a degradation product of sulfur mustard. Analyst 2015; 139:5118-26. [PMID: 25121638 DOI: 10.1039/c4an00720d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An immunochromatographic assay (ICA) based on the competitive antigen-coated format using colloidal gold as the label was developed for the detection of thiodiglycol sulfoxide (TDGO), an important metabolite and degradation compound of sulphur mustard (SM). The ICA test strip consisted of a membrane with a detection zone, a sample pad and an absorbent pad. The membrane was separately coated with hapten-OVA conjugate (test line) and anti-rabbit mouse IgG (control line). The visual detection limit for TDGO by ICA detection was found to be 10 μg mL(-1). For validation, the ICA results obtained for spiked water samples were in good agreement with those obtained by indirect competitive inhibition enzyme-linked immunosorbent assay (ELISA) for TDGO. The assay time for detection was less than 10 min. The developed ICA has the potential to be a useful on-site screening tool for the retrospective detection of SM in environmental samples.
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Affiliation(s)
- Manisha Sathe
- Process Technology Development Division, Discovery Centre, Defense R & D Establishment, Jhansi Road, Gwalior 474002, India.
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25
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Hua X, Zhou L, Feng L, Ding Y, Shi H, Wang L, Gee SJ, Hammock BD, Wang M. Competitive and noncompetitive phage immunoassays for the determination of benzothiostrobin. Anal Chim Acta 2015; 890:150-6. [PMID: 26347177 DOI: 10.1016/j.aca.2015.07.056] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 07/16/2015] [Accepted: 07/30/2015] [Indexed: 01/03/2023]
Abstract
Twenty-three phage-displayed peptides that specifically bind to an anti-benzothiostrobin monoclonal antibody (mAb) in the absence or presence of benzothiostrobin were isolated from a cyclic 8-residue peptide phage library. Competitive and noncompetitive phage enzyme linked immunosorbent assays (ELISAs) for benzothiostrobin were developed by using a clone C3-3 specific to the benzothiostrobin-free mAb and a clone N6-18 specific to the benzothiostrobin immunocomplex, respectively. Under the optimal conditions, the half maximal inhibition concentration (IC50) of the competitive phage ELISA and the concentration of analyte producing 50% saturation of the signal (SC50) of the noncompetitive phage ELISA for benzothiostrobin were 0.94 and 2.27 ng mL(-1), respectively. The noncompetitive phage ELISA showed higher selectivity compared to the competitive. Recoveries of the competitive and the noncompetitive phage ELISAs for benzothiostrobin in cucumber, tomato, pear and rice samples were 67.6-119.6% and 70.4-125.0%, respectively. The amounts of benzothiostrobin in the containing incurred residues samples detected by the two types of phage ELISAs were significantly correlated with that detected by high-performance liquid chromatography (HPLC).
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Affiliation(s)
- Xiude Hua
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Liangliang Zhou
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Lu Feng
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Yuan Ding
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Haiyan Shi
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Limin Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Shirley J Gee
- Department of Entomology and UCD Cancer Center, University of California, Davis, CA 95616, United States
| | - Bruce D Hammock
- Department of Entomology and UCD Cancer Center, University of California, Davis, CA 95616, United States
| | - Minghua Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China.
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26
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Lin Y, Zhou Q, Lin Y, Tang D, Niessner R, Knopp D. Enzymatic Hydrolysate-Induced Displacement Reaction with Multifunctional Silica Beads Doped with Horseradish Peroxidase–Thionine Conjugate for Ultrasensitive Electrochemical Immunoassay. Anal Chem 2015; 87:8531-40. [DOI: 10.1021/acs.analchem.5b02253] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Youxiu Lin
- Key
Laboratory of Analysis and Detection for Food Safety (Ministry of
Education and Fujian Province), Institute of Nanomedicine and Nanobiosensing,
Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Qian Zhou
- Key
Laboratory of Analysis and Detection for Food Safety (Ministry of
Education and Fujian Province), Institute of Nanomedicine and Nanobiosensing,
Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Yuping Lin
- Key
Laboratory of Analysis and Detection for Food Safety (Ministry of
Education and Fujian Province), Institute of Nanomedicine and Nanobiosensing,
Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Dianping Tang
- Key
Laboratory of Analysis and Detection for Food Safety (Ministry of
Education and Fujian Province), Institute of Nanomedicine and Nanobiosensing,
Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Reinhard Niessner
- Chair
for Analytical Chemistry, Institute of Hydrochemistry, Technische Universität München, Marchioninistrasse 17, D-81377 München, Germany
| | - Dietmar Knopp
- Chair
for Analytical Chemistry, Institute of Hydrochemistry, Technische Universität München, Marchioninistrasse 17, D-81377 München, Germany
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27
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Uthuppu B, Heiskanen A, Kofoed D, Aamand J, Jørgensen C, Dufva M, Jakobsen MH. Micro-flow-injection analysis (μFIA) immunoassay of herbicide residue 2,6-dichlorobenzamide – towards automated at-line monitoring using modular microfluidics. Analyst 2015; 140:1616-23. [DOI: 10.1039/c4an01576b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A prototype microfluidic immunosensor for detecting 2,6-dichlorobenzamide showing potential for at-line monitoring of ground water.
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Affiliation(s)
- Basil Uthuppu
- Department of Micro- and Nanotechnology
- Technical University of Denmark
- 2800 Kgs. Lyngby
- Denmark
| | - Arto Heiskanen
- Department of Micro- and Nanotechnology
- Technical University of Denmark
- 2800 Kgs. Lyngby
- Denmark
| | - Dan Kofoed
- Department of Micro- and Nanotechnology
- Technical University of Denmark
- 2800 Kgs. Lyngby
- Denmark
| | - Jens Aamand
- The Geological Survey of Denmark and Greenland (GEUS)
- 1350 Copenhagen
- Denmark
| | | | - Martin Dufva
- Department of Micro- and Nanotechnology
- Technical University of Denmark
- 2800 Kgs. Lyngby
- Denmark
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Saaristo M, Myers J, Jacques-Hamilton R, Allinson M, Yamamoto A, Allinson G, Pettigrove V, Wong BBM. Altered reproductive behaviours in male mosquitofish living downstream from a sewage treatment plant. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2014; 149:58-64. [PMID: 24569133 DOI: 10.1016/j.aquatox.2014.02.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 01/23/2014] [Accepted: 02/03/2014] [Indexed: 06/03/2023]
Abstract
Freshwater environments are common repositories for the discharge of large volumes of domestic and industrial waste, particularly through wastewater effluent. One common group of chemical pollutants present in wastewater are endocrine disrupting chemicals (EDCs), which can induce morphological and behavioural changes in aquatic organisms. The aim of this study was to compare the reproductive behaviour and morphology of a freshwater fish, the mosquitofish (Gambusia holbrooki), collected from two sites (wastewater treatment plant (WWTP) and a putative pristine site). The mosquitofish is a sexually dimorphic livebearer with a coercive mating system. Males inseminate females using their modified anal fin as an intromittent organ. Despite this, females are able to exert some control over the success of male mating attempts by selectively associating with, or avoiding, certain males over others. Using standard laboratory assays of reproductive behaviour, we found that mosquitofish males living in close proximity to WWTP showed increased mating activity compared to those inhabiting a pristine site. More specifically, during behavioural trials in which males were allowed to interact with females separated by a transparent divider, we found that WWTP-males spent more time associating with females. Concordant with this, when males and females were subsequently allowed to interact freely, WWTP-males also spent more time chasing and orienting towards the females. As a result, females from both sites showed more interest towards the WWTP-site males. Male anal fin morphology, however, did not differ between sites. Our study illustrates that lifetime exposure to WWTP-effluents can greatly affect male behaviour. The results underscore the importance of behaviour as a potential tool for investigating unknown contaminants in the environment.
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Affiliation(s)
- Minna Saaristo
- School of Biological Sciences, Monash University, Victoria, Australia; Åbo Akademi University, Department of Biosciences, Turku, Finland.
| | - Jackie Myers
- Centre for Aquatic Pollution Identification and Management (CAPIM), Department of Zoology, The University of Melbourne, Victoria, Australia.
| | | | - Mayumi Allinson
- Centre for Aquatic Pollution Identification and Management (CAPIM), School of Chemistry, The University of Melbourne, Victoria, Australia.
| | - Atsushi Yamamoto
- Urban Environment Group, Osaka City Institute for Public Health and Environmental Sciences, Osaka, Japan.
| | - Graeme Allinson
- Centre for Aquatic Pollution Identification and Management (CAPIM), School of Chemistry, The University of Melbourne, Victoria, Australia.
| | - Vincent Pettigrove
- Centre for Aquatic Pollution Identification and Management (CAPIM), Department of Zoology, The University of Melbourne, Victoria, Australia.
| | - Bob B M Wong
- School of Biological Sciences, Monash University, Victoria, Australia.
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29
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Lee HC, Lu PN, Huang HL, Chu C, Li HP, Tsai HJ. Zebrafish transgenic line huORFZ is an effective living bioindicator for detecting environmental toxicants. PLoS One 2014; 9:e90160. [PMID: 24594581 PMCID: PMC3940833 DOI: 10.1371/journal.pone.0090160] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 01/27/2014] [Indexed: 11/19/2022] Open
Abstract
Reliable animal models are invaluable for monitoring the extent of pollution in the aquatic environment. In this study, we demonstrated the potential of huORFZ, a novel transgenic zebrafish line that harbors a human upstream open reading frame of the chop gene fused with GFP reporter, as an animal model for monitoring environmental pollutants and stress-related cellular processes. When huORFZ embryos were kept under normal condition, no leaked GFP signal could be detected. When treated with hazardous chemicals, including heavy metals and endocrine-disrupting chemicals near their sublethal concentrations (LC50), huORFZ embryos exhibited different tissue-specific GFP expression patterns. For further analysis, copper (Cu2+), cadmium (Cd2+) and Chlorpyrifos were applied. Cu2+ triggered GFP responses in skin and muscle, whereas Cd2+ treatment triggered GFP responses in skin, olfactory epithelium and pronephric ducts. Moreover, fluorescence intensity, as exhibited by huORFZ embryos, was dose-dependent. After surviving treated embryos were returned to normal condition, survival rates, as well as TUNEL signals, returned to pretreatment levels with no significant morphological defects observed. Such results indicated the reversibility of treatment conditions used in this study, as long as embryos survived such conditions. Notably, GFP signals decreased along with recovery, suggesting that GFP signaling of huORFZ embryos likely reflected the overall physiological condition of the individual. To examine the performance of the huORFZ line under real-world conditions, we placed huORFZ embryos in different river water samples. We found that the huORFZ embryos correctly detected the presence of various kinds of pollutants. Based on these findings, we concluded that such uORFchop-based system can be integrated into a first-line water alarm system monitoring the discharge of hazardous pollutants.
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Affiliation(s)
- Hung-Chieh Lee
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, Taiwan
| | - Po-Nien Lu
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, Taiwan
- Liver Disease Prevention & Treatment Research Foundation, Taipei, Taiwan
| | - Hui-Lan Huang
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, Taiwan
- Liver Disease Prevention & Treatment Research Foundation, Taipei, Taiwan
| | - Chien Chu
- Taiwan Agricultural Chemicals and Toxic Substances Research Institute Council of Agriculture, Executive Yuan, Taichung, Taiwan
- Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Hong-Ping Li
- Taiwan Agricultural Chemicals and Toxic Substances Research Institute Council of Agriculture, Executive Yuan, Taichung, Taiwan
| | - Huai-Jen Tsai
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, Taiwan
- * E-mail:
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30
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Esteve-Turrillas FA, Mercader JV, Agulló C, Marzo J, Abad-Somovilla A, Abad-Fuentes A. Design and development of heterologous competitive immunoassays for the determination of boscalid residues. Analyst 2014; 139:3636-44. [DOI: 10.1039/c3an01104f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Antibodies and protein–hapten conjugates from novel boscalid derivatives were used to set up competitive immunoassays enabling sensitive detection of this modern fungicide.
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Affiliation(s)
- Francesc A. Esteve-Turrillas
- Institute of Agrochemistry and Food Technology
- Consejo Superior de Investigaciones Científicas (IATA-CSIC)
- 46980 Paterna, Spain
| | - Josep V. Mercader
- Institute of Agrochemistry and Food Technology
- Consejo Superior de Investigaciones Científicas (IATA-CSIC)
- 46980 Paterna, Spain
| | - Consuelo Agulló
- Department of Organic Chemistry
- Universitat de València
- 46100 Burjassot, Spain
| | - Javier Marzo
- Department of Organic Chemistry
- Universitat de València
- 46100 Burjassot, Spain
| | | | - Antonio Abad-Fuentes
- Institute of Agrochemistry and Food Technology
- Consejo Superior de Investigaciones Científicas (IATA-CSIC)
- 46980 Paterna, Spain
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31
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Yuan Y, Hua X, Li M, Yin W, Shi H, Wang M. Development of a sensitive indirect competitive enzyme-linked immunosorbent assay based on the monoclonal antibody for the detection of benzothiostrobin residue. RSC Adv 2014. [DOI: 10.1039/c4ra01845a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Watanabe E, Miyake S, Yogo Y. Review of enzyme-linked immunosorbent assays (ELISAs) for analyses of neonicotinoid insecticides in agro-environments. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:12459-12472. [PMID: 24295127 DOI: 10.1021/jf403801h] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Immunoassay is a promising method that is suitable for rapid and simple analyses of pesticides, which are likely to persist at a trace level in agro-environments, including agricultural products, soil, and water. Particularly, enzyme-linked immunosorbent assay (ELISA) has wide application to development of analytical methods for pesticide residues because it can very sensitively and very accurately determine them in samples. This paper presents a review of the fundamental analytical performance, a device for the sample pretreatment methods before determination, and cases of applications to various samples on ELISA methods that have been developed for detection of neonicotinoid insecticides in food or environmental matrices. The reviewed ELISAs can be ranked as quantitative, rapid and simple analytical methods for single analytes. The recognition of ELISA as an analytical methodology for pesticide residues is expected to advance rapidly in the future.
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Affiliation(s)
- Eiki Watanabe
- National Institute for Agro-Environmental Sciences, Tsukuba, Ibaraki 305-8604, Japan
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33
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The Use of Silver Nanorod Array-Based Surface-Enhanced Raman Scattering Sensor for Food Safety Applications. ACTA ACUST UNITED AC 2013. [DOI: 10.1021/bk-2013-1143.ch005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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34
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Comparative Study of Monoclonal and Recombinant Antibody-Based Immunoassays for Fungicide Analysis in Fruit Juices. FOOD ANAL METHOD 2013. [DOI: 10.1007/s12161-013-9655-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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35
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Gambino M, Cappitelli F, Cattò C, Carpen A, Principi P, Ghezzi L, Bonaduce I, Galano E, Pucci P, Birolo L, Villa F, Forlani F. A simple and reliable methodology to detect egg white in art samples. J Biosci 2013; 38:397-408. [DOI: 10.1007/s12038-013-9321-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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36
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Li M, Sheng E, Cong L, Wang M. Development of immunoassays for detecting clothianidin residue in agricultural products. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:3619-3623. [PMID: 23527939 DOI: 10.1021/jf400055s] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Two enzyme-linked immunosorbent assays (ELISAs) based on polyclonal antibodies (PcAbs) for clothianidin are described: colorimetric detection format (ELISA) and pattern of chemiluminescent assay (CLEIA). Clothianidin hapten was synthesized and conjugated to bovine serum albumin (BSA) and ovalbumin (OVA) to produce immunogen and coating antigen. Anticlothianidin PcAbs were obtained from immunized New Zealand white rabbits. Under optimal conditions, the half-maximal inhibition concentration (IC₅₀) and the limit of detection (LOD, IC₂₀) of clothianidin were 0.046 and 0.0028 mg/L for the ELISA and 0.015 and 0.0014 mg/L for the CLEIA, respectively. There were no obvious cross-reactivities of the antibodies with its analogues except for dinotefuran. Recoveries of 76.4-116.4% for the immunoassays were achieved from spiked samples. The results of immunoassays for the spiked and authentic samples were largely consistent with gas chromatography. Therefore, the proposed immunoassays would be convenient and satisfactory analytical methods for the monitoring of clothianidin in agricultural products.
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Affiliation(s)
- Ming Li
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, Jiangsu Key Laboratory of Pesticide Science, Ministry of Education, Nanjing 210095, People's Republic of China
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Ferguson EM, Allinson M, Allinson G, Swearer SE, Hassell KL. Fluctuations in natural and synthetic estrogen concentrations in a tidal estuary in south-eastern Australia. WATER RESEARCH 2013; 47:1604-1615. [PMID: 23305682 DOI: 10.1016/j.watres.2012.12.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 12/06/2012] [Accepted: 12/11/2012] [Indexed: 06/01/2023]
Abstract
Estuaries are often the final repositories for aquatic pollutants but how estuarine hydrology influences the availability of marine- and freshwater-derived pollutants is not well understood, particularly for micro-pollutants such as endocrine disrupting chemicals. To address this knowledge gap, this study measured natural and synthetic estrogen concentrations within the Little River, a tidal estuary in close vicinity to the major discharge point of Melbourne's largest waste water treatment plant (WWTP), the Western Treatment Plant. Quantitative enzyme-linked immunosorbent assays (ELISA) were used to determine concentrations of natural estrogens (ES: ∑E1 (estrone), E2 (17β-estradiol), E3 (estriol)) and the synthetic estrogen, 17α-ethinylestradiol (EE2). The highest concentrations were measured in samples taken from the WWTP effluent discharge channel (29.0 ng/L and 0.35 ng/L, respectively). Within the estuary, concentrations of ES (2.25-23.16 ng/L) varied somewhat between locations and sampling periods (p < 0.05), however patterns were not consistent. Significant spatial variation was observed on only one sampling occasion, and likewise temporal variation was only observed once. In the upstream freshwaters, ES (2.95-7.26 ng/L) concentrations were lower than in the estuary, although their presence suggests an additional source of ES to the environment, most likely of agricultural origin. The EE2 concentrations measured in both the estuarine and freshwater areas were all low (mostly below 0.20 ng/L), which created difficulties in interpretation due to problems associated with trying to measure such low concentrations with confidence. However, some patterns did emerge, with EE2 concentrations exhibiting significant temporal and tidal variation (p < 0.05), with concentrations greatest during low and flooding (incoming) tides. Physico-chemical properties explained 30% of the variation in ES concentrations, whereby concentrations increased with decreasing pH and DO and increasing salinity. Given the higher concentrations observed during flooding tides and the association of higher estrogen concentrations with increased salinity and low DO, we suggest that estrogens might accumulate in estuarine bottom waters and upon disturbance from the incoming tidal flows, may be a contributing source of estrogens into the estuary. This study contributes the first comprehensive investigation of estrogen dynamics in an Australian estuary, and provides the foundation for further research aimed at identifying which compounds are present in estuarine waterways, where they are coming from and how their concentrations vary through space and time.
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Affiliation(s)
- Emma M Ferguson
- Centre for Aquatic Pollution Identification and Management (CAPIM), Bio 21 Institute, The University of Melbourne, Parkville, Victoria 3052, Australia
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38
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Hua X, Yang J, Wang L, Fang Q, Zhang G, Liu F. Development of an enzyme linked immunosorbent assay and an immunochromatographic assay for detection of organophosphorus pesticides in different agricultural products. PLoS One 2012; 7:e53099. [PMID: 23300869 PMCID: PMC3534045 DOI: 10.1371/journal.pone.0053099] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Accepted: 11/23/2012] [Indexed: 11/30/2022] Open
Abstract
Objective Organophosphorus (OP) pesticides are considered hazardous substances because of their high toxicity to nontarget species and their persistence in the environment and agricultural products. Therefore, it is important to develop a rapid, sensitive, and economical method for detecting OP pesticides and their residues in food and the environment. Methods A broad, selective monoclonal antibody (MAb) for organophosphorus pesticides was produced. Based on the MAb, an enzyme linked immunosorbent assay (ELISA) and an immunochromatography assay (ICA) for detecting OP pesticides in different agricultural products were developed using a binding inhibition format on microtiter plates and a membrane strip, respectively. Results Under the optimized conditions, the IC50 values of the ELISA ranged from 3.7 to 162.2 ng mL–1 for the 8 OP pesticides. The matrix interferences of Apple, Chinese cabbage, and greengrocery were removed by 40-fold dilution, the recoveries from spiked samples ranged from 79.1% to 118.1%. The IC50 values of ICA for the 8 OP pesticides ranged from 11.8 to 470.4 ng mL−1. The matrix interference was removed from the Chinese cabbage and Apple samples with 5-fold dilution, and the interference was removed from the greengrocery samples with 20-fold dilution. The recoveries from the spiked samples ranged between 70.6 and 131.9%. The established ELISA and ICA were specific selectivity for the 8 OP pesticides. Conclusions The established ELISA is a sensitive screening method for the detection of OP pesticides, but the ELISA detection method depends on a laboratory platform and requires a relative long assay time and several steps operation. The established ICA is very useful as a screening method for the quantitative, semi-quantitative or qualitative detection of OP pesticides in agricultural products, and it has advantages over ELISA methods with regard to factors such as the testing procedure, testing time, and matrix interferences, among others.
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Affiliation(s)
- Xiude Hua
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
| | - Jifei Yang
- Henan Provincial Key Laboratory for Animal Immunology, Henan Academy of Agriculture Sciences, Zhengzhou, China
| | - Limin Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
| | - Qingkui Fang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
| | - Gaiping Zhang
- Henan Provincial Key Laboratory for Animal Immunology, Henan Academy of Agriculture Sciences, Zhengzhou, China
| | - Fengquan Liu
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
- * E-mail:
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40
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Mercader JV, Parra J, Esteve-Turrillas FA, Agulló C, Abad-Somovilla A, Abad-Fuentes A. Development of monoclonal antibody-based competitive immunoassays for the detection of picoxystrobin in cereal and oilseed flours. Food Control 2012. [DOI: 10.1016/j.foodcont.2012.01.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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41
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Xu ZL, Deng H, Deng XF, Yang JY, Jiang YM, Zeng DP, Huang F, Shen YD, Lei HT, Wang H, Sun YM. Monitoring of organophosphorus pesticides in vegetables using monoclonal antibody-based direct competitive ELISA followed by HPLC–MS/MS. Food Chem 2012. [DOI: 10.1016/j.foodchem.2011.10.020] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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42
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Xu ZL, Sun WJ, Yang JY, Jiang YM, Campbell K, Shen YD, Lei HT, Zeng DP, Wang H, Sun YM. Development of a solid-phase extraction coupling chemiluminescent enzyme immunoassay for determination of organophosphorus pesticides in environmental water samples. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:2069-2075. [PMID: 22329773 DOI: 10.1021/jf300225b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Solid-phase extraction (SPE) and direct competitive chemiluminescence enzyme immunoassay (dcCL-EIA) were combined for the detection of organophosphorus pesticides (OPs) in environmental water samples. dcCL-EIA based on horseradish peroxidase labeled with a broad-specificity monoclonal antibody against OPs was developed, and the effects of several physicochemical parameters on dcCL-EIA performance were studied. SPE was used for the pretreatment of water samples to remove interfering substances and to concentrate the OP analytes. The coupling of SPE and dcCL-EIA can detect seven OPs (parathion, coumaphos, phoxim, quinalphos, triazophos, dichlofenthion, and azinphos-ethyl) with the limit of quantitation below 0.1 ng/mL. The recoveries of OPs from spiked water samples ranged from 62.5% to 131.7% by SPE-dcCL-EIA and 69.5% to 112.3% by SPE-HPLC-MS/MS. The screening of OP residues in real-world environmental water samples by the developed SPE-dcCL-EIA and their confirmatory analysis using SPE-HPLC-MS/MS demonstrated that the assay is ideally suited as a monitoring method for OP residues prior to chromatographic analysis.
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Affiliation(s)
- Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, China
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43
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Luo Y, Xia Y. Selection of single-chain variable fragment antibodies against fenitrothion by ribosome display. Anal Biochem 2012; 421:130-7. [DOI: 10.1016/j.ab.2011.10.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 10/01/2011] [Accepted: 10/25/2011] [Indexed: 11/25/2022]
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44
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Generation of anti-azoxystrobin monoclonal antibodies from regioisomeric haptens functionalized at selected sites and development of indirect competitive immunoassays. Anal Chim Acta 2012; 715:105-12. [DOI: 10.1016/j.aca.2011.12.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Accepted: 12/08/2011] [Indexed: 11/22/2022]
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45
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Wang Z, Luo P, Cheng L, Zhang S, Shen J. Hapten-antibody recognition studies in competitive immunoassay of α-zearalanol analogs by computational chemistry and Pearson Correlation analysis. J Mol Recognit 2012; 24:815-23. [PMID: 21812055 DOI: 10.1002/jmr.1121] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The molecular recognition of hapten-antibody is a fundamental event in competitive immunoassay, which guarantees the sensitivity and specificity of immunoassay for the detection of haptens. The aim of this study is to investigate the correlation between binding ability of one monoclonal antibody, 1H9B4, recognizing and the molecular aspects of α-zearalanol analogs. The mouse-derived monoclonal antibody was produced by using α-zearalanol conjugated to bovine serum albumin as an immunogen. The antibody recognition abilities, expressed as IC(50) values, were determined by a competitive ELISA. All of the hapten molecules were optimized by Density Function Theory (DFT) at B3LYP/ 6-31G* level and the conformation and electrostatic molecular isosurface were employed to explain the molecular recognition between α-zearalanol analogs and antibody 1H9B4. Pearson Correlation analysis between molecular descriptors and IC(50) values was qualitatively undertaken and the results showed that one molecular descriptor, surface of the hapten molecule, clearly demonstrated linear relationship with antibody recognition ability, where the relationship coefficient was 0.88 and the correlation was significant at p < 0.05 level. The study shows that computational chemistry and Pearson Correlation analysis can be used as tool to help the immunochemistries better understand the processing of antibody recognition of hapten molecules in competitive immunoassay.
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Affiliation(s)
- Zhanhui Wang
- College of Veterinary Medicine, China Agricultural University, Beijing 100094, People's Republic of China
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46
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Kim HJ, McCoy MR, Majkova Z, Dechant JE, Gee SJ, Tabares-da Rosa S, González-Sapienza GG, Hammock BD. Isolation of alpaca anti-hapten heavy chain single domain antibodies for development of sensitive immunoassay. Anal Chem 2012; 84:1165-71. [PMID: 22148739 PMCID: PMC3264785 DOI: 10.1021/ac2030255] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Some unique subclasses of Camelidae antibodies are devoid of the light chain, and the antigen binding site is comprised exclusively of the variable domain of the heavy chain (VHH). Although conventional antibodies dominate current assay development, recombinant VHHs have a high potential as alternative reagents for the next generation of immunoassay. We expressed VHHs from an immunized alpaca and developed a VHH-based immunoassay using 3-phenoxybenzoic acid (3-PBA), a major metabolite of pyrethroid insecticides as a model system. A phage VHH library was constructed, and seven VHH clones were selected by competitive binding with 3-PBA. The best immunoassay developed with one of these VHHs showed an IC(50) of 1.4 ng/mL (limit of detection (LOD) = 0.1 ng/mL). These parameters were further improved by using the phage borne VHH, IC(50) = 0.1 ng/mL and LOD = 0.01 ng/mL. Both assays showed a similar tolerance to methanol and dimethylsulfoxide up to 50% in assay buffer. The assay was highly specific to 3-PBA and its 4-hydroxylated derivative, 4-hydroxy 3-PBA, (150% cross reactivity) with negligible cross reactivity with other tested structural analogues, and the recovery from spiked urine sample ranged from 80 to 112%. In conclusion, a highly specific and sensitive VHH for 3-PBA was developed using sequences from immunized alpaca and phage display technology for antibody selection.
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Affiliation(s)
- Hee-Joo Kim
- Department of Entomology and UCD Cancer Center, University of California, Davis, California 95616, United States
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47
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A label-free electrochemical immunosensor for direct, signal-on and sensitive pesticide detection. Biosens Bioelectron 2012; 31:62-8. [DOI: 10.1016/j.bios.2011.09.035] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2011] [Revised: 09/19/2011] [Accepted: 09/27/2011] [Indexed: 11/18/2022]
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48
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Estevez MC, Belenguer J, Gomez-Montes S, Miralles J, Escuela AM, Montoya A, Lechuga LM. Indirect competitive immunoassay for the detection of fungicide Thiabendazole in whole orange samples by Surface Plasmon Resonance. Analyst 2012; 137:5659-65. [DOI: 10.1039/c2an36094b] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Rau S, Gauglitz G. Reflectometric interference spectroscopy (RIfS) as a new tool to measure in the complex matrix milk at low analyte concentration. Anal Bioanal Chem 2011; 402:529-36. [PMID: 22009049 DOI: 10.1007/s00216-011-5470-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 09/27/2011] [Accepted: 10/03/2011] [Indexed: 10/16/2022]
Abstract
Measurements in complex matrices like milk still present a challenge in biosensor development. This is especially important when using a label-free detection method or when measuring low analyte concentrations. The direct optical method reflectometric interference spectroscopy (RIfS) was used for investigating matrix effects in immunoassay development. Furthermore, approaches to reduce these effects have been established. As a model system, the hormone testosterone has been chosen because this immunoassay has been well characterized in buffer. In a first step, the immunoassay for the detection of testosterone in buffer was improved beyond former published results. Therefore, the sensor surface was optimized, resulting in a fivefold lower limit of detection (70.2 ng L(-1)) and limit of quantification (130.0 ng L(-1)). Additionally, the assay time could be reduced to 15 min. Consequently, we used this improved assay to investigate matrix effects of whole pasteurized bovine milk. To minimize these effects, the surface chemistry was adapted and a suitable evaluation method was established, reducing the effects of Tyndall scattering and nonspecific binding to the sensor surface. These improvements allow for very reliable quantitative measurements in milk. The assay developed required no sample pretreatment and allowed for the regeneration of the sensor surface so that calibration could be performed on one chip. The calibration in milk (3.5% fat) resulted in a limit of detection of 94.4 ng L(-1) and a limit of quantification of 229.3 ng L(-1). Furthermore, recovery rates between 70% and 120% could be obtained. Thus, for the first time, an analyte in the matrix milk was successfully quantified with RIfS at low concentrations.
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Affiliation(s)
- Sabrina Rau
- Institute of Physical and Theoretical Chemistry (IPTC), Eberhard Karls University of Tübingen, Tübingen, Germany.
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Pasquet C, Vulliet E. Utilisation of an enzyme-linked immunosorbent assay (ELISA) for determination of alkylphenols in various environmental matrices. Comparison with LC–MS/MS method. Talanta 2011; 85:2492-7. [DOI: 10.1016/j.talanta.2011.07.102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 07/28/2011] [Accepted: 07/29/2011] [Indexed: 10/17/2022]
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