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Wang P, Xu X, Song S, Liu L, Kuang H, Xu C. Rapid and sensitive detection of clomazone in potato and pumpkin samples using a gold nanoparticle-based lateral-flow strip. Food Chem 2022; 375:131888. [PMID: 34974348 DOI: 10.1016/j.foodchem.2021.131888] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 11/20/2021] [Accepted: 12/15/2021] [Indexed: 12/27/2022]
Abstract
In this study, an ultrasensitive monoclonal antibody (mAb) was produced and used to develop a gold nanoparticle-based lateral flow immunochromatographic (ICA) strip for screening of clomazone (CLO) in potato and pumpkin samples. With assayed by indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) method, the mAb belonging of IgG2 subclass showed a half-maximal inhibitory concentration (IC50) of 3.47 ng/mL and a linear range of detection of 0.43-28.09 ng/mL. A cross-reactivity test revealed that the mAb had good specificity for CLO. The strip assay had a visual limit of detection (LOD) of 5 µg/kg and a cut-off value of 50 µg/kg for CLO pumpkin samples (potato samples was 100 µg/kg) when evaluated with the naked eye. The results were consistent with ic-ELISA and high performance liquid chromatography tandem mass spectrometry (HPLC-MS). Thus, this ICA strip assay represents a potentially tool for on-site and rapid initial detection of CLO in potato and pumpkin samples.
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Affiliation(s)
- Peng Wang
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Xinxin Xu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Shanshan Song
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Liqiang Liu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China.
| | - Hua Kuang
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Chuanlai Xu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China.
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Binder CR, García-Santos G, Andreoli R, Diaz J, Feola G, Wittensoeldner M, Yang J. Simulating Human and Environmental Exposure from Hand-Held Knapsack Pesticide Application: Be-WetSpa-Pest, an Integrative, Spatially Explicit Modeling Approach. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:3999-4008. [PMID: 26828854 DOI: 10.1021/acs.jafc.5b05304] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This paper presents an integrative and spatially explicit modeling approach for analyzing human and environmental exposure from pesticide application of smallholders in the potato-producing Andean region in Colombia. The modeling approach fulfills the following criteria: (i) it includes environmental and human compartments; (ii) it contains a behavioral decision-making model for estimating the effect of policies on pesticide flows to humans and the environment; (iii) it is spatially explicit; and (iv) it is modular and easily expandable to include additional modules, crops, or technologies. The model was calibrated and validated for the Vereda La Hoya and was used to explore the effect of different policy measures in the region. The model has moderate data requirements and can be adapted relatively easily to other regions in developing countries with similar conditions.
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Affiliation(s)
- Claudia R Binder
- Department of Geography, University of Zurich , Zurich, Switzerland
- Department of Geography, LMU-University of Munich , Munich, Germany
- Institute for Environmental Engineering, ENAC, Ecole Polytechnique Fédérale de Lausanne , Lausanne, Switzerland
| | - Glenda García-Santos
- Department of Geography, Alpen-Adria-University Klagenfurt , Klagenfurt, Austria
| | | | - Jaime Diaz
- Department of Sanitary and Environmental Engineering, Universidad de Boyacá , Tunja, Colombia
| | - Giuseppe Feola
- Department of Geography and Environmental Science, University of Reading , Reading, United Kingdom
| | | | - Jing Yang
- National Institute of Water and Atmospheric Research , Auckland, New Zealand
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Peters LP, Carvalho G, Martins PF, Dourado MN, Vilhena MB, Pileggi M, Azevedo RA. Differential responses of the antioxidant system of ametryn and clomazone tolerant bacteria. PLoS One 2014; 9:e112271. [PMID: 25380132 PMCID: PMC4224425 DOI: 10.1371/journal.pone.0112271] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Accepted: 10/02/2014] [Indexed: 12/26/2022] Open
Abstract
The herbicides ametryn and clomazone are widely used in sugarcane cultivation, and following microbial degradation are considered as soil and water contaminants. The exposure of microorganisms to pesticides can result in oxidative damage due to an increase in the production of reactive oxygen species (ROS). This study investigated the response of the antioxidant systems of two bacterial strains tolerant to the herbicides ametryn and clomazone. Bacteria were isolated from soil with a long history of ametryn and clomazone application. Comparative analyses based on 16S rRNA gene sequences revealed that strain CC07 is phylogenetically related to Pseudomonas aeruginosa and strain 4C07 to P. fulva. The two bacterial strains were grown for 14 h in the presence of separate and combined herbicides. Lipid peroxidation, reduced glutathione content (GSH) and antioxidant enzymes activities were evaluated. The overall results indicated that strain 4C07 formed an efficient mechanism to maintain the cellular redox balance by producing reactive oxygen species (ROS) and subsequently scavenging ROS in the presence of the herbicides. The growth of bacterium strain 4C07 was inhibited in the presence of clomazone alone, or in combination with ametryn, but increased glutathione reductase (GR) and glutathione S-transferase (GST) activities, and a higher GSH concentration were detected. Meanwhile, reduced superoxide dismutase (SOD), catalase (CAT) and GST activities and a lower concentration of GSH were detected in the bacterium strain CC07, which was able to achieve better growth in the presence of the herbicides. The results suggest that the two bacterial strains tolerate the ametryn and clomazone herbicides with distinctly different responses of the antioxidant systems.
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Affiliation(s)
- Leila Priscila Peters
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brazil
| | - Giselle Carvalho
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brazil
| | - Paula Fabiane Martins
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brazil
| | - Manuella Nóbrega Dourado
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brazil
| | - Milca Bartz Vilhena
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brazil
| | - Marcos Pileggi
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| | - Ricardo Antunes Azevedo
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brazil
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Lassabe G, Rossotti M, González-Techera A, González-Sapienza G. Shiga-like toxin B subunit of Escherichia coli as scaffold for high-avidity display of anti-immunocomplex peptides. Anal Chem 2014; 86:5541-6. [PMID: 24797274 PMCID: PMC4045326 DOI: 10.1021/ac500926f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
![]()
Small
compounds cannot bind simultaneously to two antibodies, and
thus, their immunodetection is limited to competitive formats in which
the analyte is indirectly quantitated by measuring the unoccupied
antibody binding sites using a competing reporter. This limitation
can be circumvented by using phage-borne peptides selected for their
ability to specifically react with the analyte–antibody immunocomplex,
which allows the detection of these small molecules in a noncompetitive
format (PHAIA) with increased sensitivity and a positive readout.
In an effort to find substitutes for the phage particles in PHAIA,
we explore the use of the B subunit of the Shiga-like toxin of Escherichia coli, also known as verotoxin (VTX),
as a scaffold for multivalent display of anti-immunocomplex peptides.
Using the herbicides molinate and clomazone as model compounds, we
built peptide–VTX recombinant chimeras that were produced in
the periplasmic space of E. coli as
soluble pentamers, as confirmed by multiangle light scattering analysis.
These multivalent constructs, which we termed nanopeptamers, were
conjugated to a tracer enzyme and used to detect the herbicide–antibody
complex in an ELISA format. The VTX–nanopeptamer assays performed
with over a 10-fold increased sensitivity and excellent recovery from
spiked surface and mineral water samples. The carbon black-labeled
peptide–VTX nanopeptamers showed great potential for the development
of a lateral-flow test for small molecules with a visual positive
readout that allowed the detection of up to 2.5 ng/mL of clomazone.
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Affiliation(s)
- Gabriel Lassabe
- Cátedra de Inmunología, Facultad de Química, Instituto de Higiene, UDELAR , Montevideo, Uruguay
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Vanrell L, Gonzalez-Techera A, Hammock BD, Gonzalez-Sapienza G. Nanopeptamers for the development of small-analyte lateral flow tests with a positive readout. Anal Chem 2013; 85:1177-82. [PMID: 23214940 PMCID: PMC3904493 DOI: 10.1021/ac3031114] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
There is a great demand for rapid tests that can be used on-site for the detection of small analytes, such as pesticides, persistent organic pollutants, explosives, toxins, medicinal and abused drugs, hormones, etc. Dipsticks and lateral flow devices, which are simple and provide a visual readout, may be the answer, but the available technology for these compounds requires a competitive format that loses sensitivity and produces readings inversely proportional to the analyte concentration, which is counterintuitive and may lead to potential misinterpretation of the result. In this work, protein-multipeptide constructs composed of anti-immunocomplex peptides selected from phage libraries and streptavidin/avidin as core protein were used for direct detection of small compounds in a noncompetitive two-site immunoassay format that performs with increased sensitivity and positive readout. These constructs that we termed "nanopeptamers" allow the development of rapid point-of-use tests with a positive visual end point of easy interpretation. As proof of concept, lateral flow assays for the herbicides molinate and clomazone were developed and their performance was characterized with field samples.
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Affiliation(s)
- Lucía Vanrell
- Cátedra de Inmunología, Facultad de Química, Instituto de Higiene, UdelaR, Montevideo 11600, Uruguay
| | - Andrés Gonzalez-Techera
- Cátedra de Inmunología, Facultad de Química, Instituto de Higiene, UdelaR, Montevideo 11600, Uruguay
| | - Bruce D Hammock
- Department of Entomology and UCD Cancer Center, University of California, Davis, California 95616, United States
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Rossotti MA, Carlomagno M, González-Techera A, Hammock BD, Last J, González-Sapienza G. Phage anti-immunocomplex assay for clomazone: two-site recognition increasing assay specificity and facilitating adaptation into an on-site format. Anal Chem 2010; 82:8838-43. [PMID: 20886819 DOI: 10.1021/ac101476f] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The impact of the use of herbicides in agriculture can be minimized by compliance with good management practices that reduce the amount used and their release into the environment. Simple tests that provide real time on-site information about these chemicals are a major aid for these programs. In this work, we show that phage anti-immunocomplex assay (PHAIA), a method that uses phage-borne peptides to detect the formation of antibody-analyte immunocomplexes, is an advantageous technology to produce such field tests. A monoclonal antibody to the herbicide clomazone was raised and used in the development of conventional competitive and noncompetitive PHAIA immunoassays. The sensitivity attained with the PHAIA format was over 10 times higher than that of the competitive format. The cross-reactivity of the two methods was also compared using structurally related compounds, and we observed that the two-site binding of PHAIA "double-checks" the recognition of the analyte, thereby increasing the assay specificity. The positive readout of the noncompetitive PHAIA method allowed adaptation of the assay into a rapid and simple format where as little as 0.4 ng/mL clomazone (more than 10-fold lower than the proposed standard) in water samples from a rice field could be easily detected by simple visual inspection.
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Affiliation(s)
- M A Rossotti
- Cátedra de Inmunología, Facultad de Química, Instituto de Higiene, UDELAR, Montevideo, Uruguay, and Department of Entomology and Cancer Center and Pulmonary/Critical Care Medicine, School of Medicine, University of California, Davis, California, United States
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