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Vasylieva N, Ahn KC, Barnych B, Gee SJ, Hammock BD. Development of an Immunoassay for the Detection of the Phenylpyrazole Insecticide Fipronil. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:10038-10047. [PMID: 26196357 PMCID: PMC4605820 DOI: 10.1021/acs.est.5b01005] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Phenylpyrazole insecticides such as fipronil have been used as replacements for organophosphates. The wide application of fipronil raises concern about environmental contamination and risk for fish, birds, and other nontargeted beings as well as human health. A sensitive, competitive indirect heterologous enzyme-linked immunosorbent assay (ELISA) was developed. Antibodies with different specificities to fipronil and its metabolites were produced. Two ELISAs having IC50 values of 0.58 ± 0.06 and 2.6 ± 0.4 ng/mL were developed. Design of different haptens and coating antigens resulted in two assays with distinct cross-reactivity patterns for structurally related compounds: 96, 38, and 101% versus 39, 1.4, and 25% for fipronil-sulfide, fipronil-detrifluoromethylsulfonyl, and fipronil-desulfinyl, respectively. Performance of the immunoassays was demonstrated by a recovery study from spiked water and human serum and urine matrices, giving recovery values in the range of 85-111% for different concentrations. The assays demonstrated good correlation in fipronil recovery with conventional LC-MS/MS analysis. The generic assay 2265 has the sensitivity to measure fipronil and its analogs in serum at levels relevant for exposure monitoring. The assays were used to analyze human urine samples obtained from exposure studies and serum samples from rats treated with a fipronil-containing diet.
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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
| | - Ki Chang Ahn
- 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
| | - 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
- Corresponding Author, Tel. : 530-752-8465. Fax : 530-752-7519.
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Li H, Li J, Yang Z, Xu Q, Hu X. A Novel Photoelectrochemical Sensor for the Organophosphorus Pesticide Dichlofenthion Based on Nanometer-Sized Titania Coupled with a Screen-Printed Electrode. Anal Chem 2011; 83:5290-5. [DOI: 10.1021/ac200706k] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hongbo Li
- College of Chemistry and Engineering, Yangzhou University, 88 South University Avenue, Yangzhou 225002, P. R. China
- College of Chemistry and Biology Engineering, Yancheng Institute of Technology, 9 Yingbin Avenue, Yancheng 224051, P. R. China
| | - Jing Li
- College of Chemistry and Biology Engineering, Yancheng Institute of Technology, 9 Yingbin Avenue, Yancheng 224051, P. R. China
| | - Zhanjun Yang
- College of Chemistry and Engineering, Yangzhou University, 88 South University Avenue, Yangzhou 225002, P. R. China
| | - Qin Xu
- College of Chemistry and Engineering, Yangzhou University, 88 South University Avenue, Yangzhou 225002, P. R. China
| | - Xiaoya Hu
- College of Chemistry and Engineering, Yangzhou University, 88 South University Avenue, Yangzhou 225002, P. R. China
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Xu ZL, Shen YD, Zheng WX, Beier RC, Xie GM, Dong JX, Yang JY, Wang H, Lei HT, She ZG, Sun YM. Broad-Specificity Immunoassay for O,O-Diethyl Organophosphorus Pesticides: Application of Molecular Modeling to Improve Assay Sensitivity and Study Antibody Recognition. Anal Chem 2010; 82:9314-21. [DOI: 10.1021/ac1018414] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhen-Lin Xu
- Key Laboratory of Food Quality and Safety of Guangdong Province, South China Agricultural University, Guangzhou 510642, China, Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, 2881 F&B Road, College Station, Texas 77845-4988, United States, and School of Chemistry and Chemical Engineering, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou 510275, China
| | - Yu-Dong Shen
- Key Laboratory of Food Quality and Safety of Guangdong Province, South China Agricultural University, Guangzhou 510642, China, Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, 2881 F&B Road, College Station, Texas 77845-4988, United States, and School of Chemistry and Chemical Engineering, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou 510275, China
| | - Wen-Xu Zheng
- Key Laboratory of Food Quality and Safety of Guangdong Province, South China Agricultural University, Guangzhou 510642, China, Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, 2881 F&B Road, College Station, Texas 77845-4988, United States, and School of Chemistry and Chemical Engineering, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou 510275, China
| | - Ross C. Beier
- Key Laboratory of Food Quality and Safety of Guangdong Province, South China Agricultural University, Guangzhou 510642, China, Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, 2881 F&B Road, College Station, Texas 77845-4988, United States, and School of Chemistry and Chemical Engineering, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou 510275, China
| | - Gui-Mian Xie
- Key Laboratory of Food Quality and Safety of Guangdong Province, South China Agricultural University, Guangzhou 510642, China, Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, 2881 F&B Road, College Station, Texas 77845-4988, United States, and School of Chemistry and Chemical Engineering, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou 510275, China
| | - Jie-Xian Dong
- Key Laboratory of Food Quality and Safety of Guangdong Province, South China Agricultural University, Guangzhou 510642, China, Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, 2881 F&B Road, College Station, Texas 77845-4988, United States, and School of Chemistry and Chemical Engineering, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou 510275, China
| | - Jin-Yi Yang
- Key Laboratory of Food Quality and Safety of Guangdong Province, South China Agricultural University, Guangzhou 510642, China, Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, 2881 F&B Road, College Station, Texas 77845-4988, United States, and School of Chemistry and Chemical Engineering, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou 510275, China
| | - Hong Wang
- Key Laboratory of Food Quality and Safety of Guangdong Province, South China Agricultural University, Guangzhou 510642, China, Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, 2881 F&B Road, College Station, Texas 77845-4988, United States, and School of Chemistry and Chemical Engineering, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou 510275, China
| | - Hong-Tao Lei
- Key Laboratory of Food Quality and Safety of Guangdong Province, South China Agricultural University, Guangzhou 510642, China, Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, 2881 F&B Road, College Station, Texas 77845-4988, United States, and School of Chemistry and Chemical Engineering, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou 510275, China
| | - Zhi-Gang She
- Key Laboratory of Food Quality and Safety of Guangdong Province, South China Agricultural University, Guangzhou 510642, China, Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, 2881 F&B Road, College Station, Texas 77845-4988, United States, and School of Chemistry and Chemical Engineering, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou 510275, China
| | - Yuan-Ming Sun
- Key Laboratory of Food Quality and Safety of Guangdong Province, South China Agricultural University, Guangzhou 510642, China, Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, 2881 F&B Road, College Station, Texas 77845-4988, United States, and School of Chemistry and Chemical Engineering, Sun Yat-Sen University, 135 Xingangxi Road, Guangzhou 510275, China
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Liang Y, Liu XJ, Liu Y, Yu XY, Fan MT. Synthesis of three haptens for the class-specific immunoassay of O,O-dimethyl organophosphorus pesticides and effect of hapten heterology on immunoassay sensitivity. Anal Chim Acta 2008; 615:174-83. [PMID: 18442523 DOI: 10.1016/j.aca.2008.03.050] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2007] [Revised: 03/19/2008] [Accepted: 03/20/2008] [Indexed: 11/19/2022]
Abstract
A general and broad class-specific enzyme-linked immunosorbent assay was developed for the O,O-dimethyl organophosphorus pesticides, including malathion, dimethoate, phenthoate, phosmet, methidathion, fenitrothion, methyl parathion and fenthion. Three haptens with different spacer-arms were synthesized. The haptens were conjugated to bovine serum albumin (BSA) for immunogens and to ovalbumin (OVA) for coating antigens. Rabbits were immunized with the immunogens and six polyclonal antisera were produced and screened against each of the coating antigens using competitive indirect enzyme-linked immunosorbent assay for selecting the proper antiserum. The effect of hapten heterology on immunoassay sensitivity was also studied. The antibody-antigen combination with the most selectivity for malathion was further optimized and tested for tolerance to co-solvent, pH and ionic strength changes. The IC(50) values, under optimum conditions, were estimated to be 30.1microgL(-1)for malathion, 28.9microgL(-1) for dimethoate, 88.3microgL(-1) for phenthoate, 159.7microgL(-1) for phosmet, 191.7microgL(-1) for methidathion, 324.0microgL(-1) for fenitrothion, 483.9microgL(-1) for methyl parathion, and 788.9microgL(-1) for fenthion. Recoveries of malathion, dimethoate, phenthoate, phosmet and methidathion from fortified Chinese cabbage samples ranged between 77.1% and 104.7%. This assay can be used in monitoring studies for the multi-residue determination of O,O-dimethyl organophosphorus pesticides.
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Affiliation(s)
- Ying Liang
- Department of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
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Wang ST, Gui WJ, Guo YR, Zhu GN. Preparation of a multi-hapten antigen and broad specificity polyclonal antibodies for a multiple pesticide immunoassay. Anal Chim Acta 2007; 587:287-92. [PMID: 17386785 DOI: 10.1016/j.aca.2007.01.052] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2006] [Revised: 01/16/2007] [Accepted: 01/18/2007] [Indexed: 11/29/2022]
Abstract
A multi-determinant artificial antigen was prepared by haptens of four pesticides (chlorpyrifos, triazophos, carbofuran and parathion methyl) conjugating to the carrier protein BSA in turn. Male New Zealand white rabbits were immunized with this multi-determinant immunogen to produce the polyclonal antibodies (PAbs), which can recognize the four pesticides. The PAbs displayed high level for each relative hapten-OVA conjugate, with the favorable titers of 4.49 x 10(4), 8.98 x 10(4), 2.24 x 10(4) and 1.86 x 10(4), for CHBu-OVA, THHe-OVA, BFNB-OVA and MP5-OVA, respectively. Characterization studies of the PcAbs showed that it has high affinity and specificity to the four relative pesticides. An indirect competitive ELISA was developed for multi-residue determination. The I(50) value for the four pesticides was 0.290, 0.065, 0.582 and 2.824 microg mL(-1), with the detection limit (I(10)) of 0.022, 0.005, 0.015 and 0.115 microg mL(-1) for carbofuran, triazophos, chlorpyrifos and parathion methyl, respectively. The linear rang was 0.016-2.000, 0.005-0.500, 0.010-2.000 and 0.063-5.000 microg mL(-1), respectively, for carbofuran, triazophos, chlorpyrifos and parathion methyl. Results indicated that, this study provided a new strategy to develop immunoassays through artificial antigen design for pesticides multi-residue determination.
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Affiliation(s)
- Shu Ting Wang
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, China
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