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Schmidt S, Hoffmann H, Garbe LA, Harrer A, Steiner M, Himly M, Schneider RJ. Re-assessment of monoclonal antibodies against diclofenac for their application in the analysis of environmental waters. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:3349-3363. [PMID: 38742423 PMCID: PMC11138808 DOI: 10.1039/d3ay01333b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 05/07/2024] [Indexed: 05/16/2024]
Abstract
The non-steroidal anti-inflammatory drug (NSAID) diclofenac (DCF) is an important environmental contaminant occurring in surface waters all over the world, because, after excretion, it is not adequately removed from wastewater in sewage treatment plants. To be able to monitor this pollutant, highly efficient analytical methods are needed, including immunoassays. In a medical research project, monoclonal antibodies against diclofenac and its metabolites had been produced. Based on this monoclonal anti-DCF antibody, a new indirect competitive enzyme-linked immunosorbent assay (ELISA) was developed and applied for environmental samples. The introduction of a spacer between diclofenac and the carrier protein in the coating conjugate led to higher sensitivity. With a test midpoint of 3 μg L-1 and a measurement range of 1-30 μg L-1, the system is not sensitive enough for direct analysis of surface water. However, this assay is quite robust against matrix influences and can be used for wastewater. Without adjustment of the calibration, organic solvents up to 5%, natural organic matter (NOM) up to 10 mg L-1, humic acids up to 2.5 mg L-1, and salt concentrations up to 6 g L-1 NaCl and 75 mg L-1 CaCl2 are tolerated. The antibody is also stable in a pH range from 3 to 12. Cross-reactivity (CR) of 1% or less was determined for the metabolites 4'-hydroxydiclofenac (4'-OH-DCF), 5-hydroxydiclofenac (5-OH-DCF), DCF lactam, and other NSAIDs. Relevant cross-reactivity occurred only with an amide derivative of DCF, 6-aminohexanoic acid (DCF-Ahx), aceclofenac (ACF) and DCF methyl ester (DCF-Me) with 150%, 61% and 44%, respectively. These substances, however, have not been found in samples. Only DCF-acyl glucuronide with a cross-reactivity of 57% is of some relevance. For the first time, photodegradation products were tested for cross-reactivity. With the ELISA based on this antibody, water samples were analysed. In sewage treatment plant effluents, concentrations in the range of 1.9-5.2 μg L-1 were determined directly, with recoveries compared to HPLC-MS/MS averaging 136%. Concentrations in lakes ranged from 3 to 4.4 ng L-1 and were, after pre-concentration, determined with an average recovery of 100%.
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Affiliation(s)
- Stephan Schmidt
- Department of Analytical Chemistry, Reference Materials, BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Str. 11, 12489 Berlin, Germany.
- Technische Universität Berlin, Straße des 17. Juni 135, D-10623 Berlin, Germany
| | - Holger Hoffmann
- Department of Analytical Chemistry, Reference Materials, BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Str. 11, 12489 Berlin, Germany.
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, D-12489 Berlin, Germany
| | - Leif-Alexander Garbe
- Hochschule Neubrandenburg, Fachbereich Agrarwirtschaft und Lebensmittelwissenschaften, D-17033 Neubrandenburg, Germany
| | - Andrea Harrer
- Department of Biosciences and Medical Biology, Division of Allergy and Immunology, Paris Lodron University of Salzburg, A-5020 Salzburg, Austria
| | - Markus Steiner
- Department of Biosciences and Medical Biology, Division of Allergy and Immunology, Paris Lodron University of Salzburg, A-5020 Salzburg, Austria
| | - Martin Himly
- Department of Biosciences and Medical Biology, Division of Allergy and Immunology, Paris Lodron University of Salzburg, A-5020 Salzburg, Austria
| | - Rudolf J Schneider
- Department of Analytical Chemistry, Reference Materials, BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Str. 11, 12489 Berlin, Germany.
- Technische Universität Berlin, Straße des 17. Juni 135, D-10623 Berlin, Germany
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Song J, Guo T, Wu W, Liao M, Xiao Q, Qiao B, Wan Y, Dai Q, Zhou Y. Simultaneous determination of five poppy husk alkaloids and three main components of acetaminophen‐caffeine‐aspirin tablets in hot pot broth by ultra‐high‐performance liquid chromatography–tandem mass spectrometry. SEPARATION SCIENCE PLUS 2022. [DOI: 10.1002/sscp.202200088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Juan Song
- Chengdu Institute of Food Inspection Chengdu P. R. China
| | - Tianrong Guo
- Chengdu Institute of Food Inspection Chengdu P. R. China
| | - Wenlin Wu
- Chengdu Institute of Food Inspection Chengdu P. R. China
- Chengdu Institute of Biology Chinese Academy of Sciences Chengdu P. R. China
- University of Chinese Academy of Sciences Beijing P. R. China
| | - Mei Liao
- Chengdu Institute of Food Inspection Chengdu P. R. China
| | - Quanwei Xiao
- Chengdu Institute of Food Inspection Chengdu P. R. China
| | - Binzong Qiao
- Chengdu Institute of Food Inspection Chengdu P. R. China
| | - Yuping Wan
- Chengdu Institute of Food Inspection Chengdu P. R. China
| | - Qin Dai
- Chengdu Institute of Food Inspection Chengdu P. R. China
| | - Yan Zhou
- Chengdu Institute of Biology Chinese Academy of Sciences Chengdu P. R. China
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Chen H, Liu R, Guo X, Deng G, Xu L, Zhang L, Lan W, Zhou C, She Y, Fu H. Visual paper-based sensor for the highly sensitive detection of caffeine in food and biological matrix based on CdTe-nano ZnTPyP combined with chemometrics. Mikrochim Acta 2021; 188:27. [PMID: 33404824 DOI: 10.1007/s00604-020-04663-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/20/2020] [Indexed: 10/22/2022]
Abstract
Caffeine naturally occurs in tea and cocoa, which is also used as an additive in beverages and has pharmacological effects such as refreshing, antidepressant, and digestion promotion, but excessive caffeine can cause harm to the human body. In this work, based on the specific response between nano zinc 5, 10, 15, 20-tetra(4-pyridyl)-21H-23H-porphine (nano ZnTPyP)-CdTe quantum dots (QDs) and caffeine, combined with chemometrics, a visual paper-based sensor was constructed for rapid and on-site detection of caffeine. The fluorescence of QDs can be quenched by nano ZnTPyP. When caffeine is added to the system, it can pull nano ZnTPyP off the surface of the QDs to achieve fluorescence recovery through electrostatic attraction and nitrogen/zinc coordination. The detection range is 5 × 10-11~3 × 10-9 mol L-1, and the detection limit is 1.53 × 10-11 mol L-1 (R2 = 0.9990) (S/N = 3). The paper-based sensor constructed exhibits good results in real samples, such as tea water, cell culture fluid, newborn bovine serum, and human plasma. Therefore, the sensor is expected to be applied to the rapid instrument-free detection of caffeine in food and biological samples.Graphical abstract.
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Affiliation(s)
- Hengye Chen
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, 430074, People's Republic of China
| | - Rui Liu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, 430074, People's Republic of China
| | - Xiaoming Guo
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, 430074, People's Republic of China
| | - Gaoqiong Deng
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, 430074, People's Republic of China
| | - Lu Xu
- College of Material and Chemical Engineering, Tongren University, Tongren, 554300, Guizhou, People's Republic of China
| | - Lei Zhang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Wei Lan
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, 430074, People's Republic of China
| | - Chunsong Zhou
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China.,International Environmental Protection City Technology Limited Company (IEPCT), Yixing, 214200, People's Republic of China
| | - Yuanbin She
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Haiyan Fu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, 430074, People's Republic of China.
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Silva CPC, Carvalho T, Schneider RJ, Esteves VI, Lima DLD. ELISA as an effective tool to determine spatial and seasonal occurrence of emerging contaminants in the aquatic environment. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:2517-2526. [PMID: 32930242 DOI: 10.1039/d0ay00426j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
During the last two decades, studies related to the occurrence and fate of emerging contaminants in the aquatic environment have received great attention from the international scientific community. The monitoring of the presence of these compounds is particularly important since they are known to induce adverse effects in aquatic environments, even at extremely low concentrations. This work aimed to apply a simple and effective methodology, such as enzyme-linked immunosorbent assay (ELISA), in the monitoring of 17α-ethinylestradiol (EE2) and 17β-estradiol (E2) (a synthetic and a natural hormone, respectively), carbamazepine (CBZ, an antiepileptic), cetirizine (CET, an antihistamine) and caffeine (CAF, a stimulant) in water matrices with differing salinity and organic matter contents. ELISA was proven to be a valid and practical tool, especially for screening purposes in contrast to traditional chromatographic techniques which are prohibitively expensive for an application on a broader base. The main originality of this work was to establish seasonal and spatial effects on the occurrence of the referred contaminants by using the effectiveness of ELISA to screen those compounds in samples with different characteristics. This work reports both the seasonal and spatial quantification of the referred contaminants in the aquatic environment of the central region of Portugal, with concentrations ranging as follows: 5-87 ng L-1, for E2, 2-17 ng L-1, for EE2, 10-1290 ng L-1, for CBZ, 10-190 ng L-1, for CET, and 62-6400 ng L-1, for CAF.
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Affiliation(s)
- Carla Patrà Cia Silva
- CESAM, Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
| | - Tânia Carvalho
- Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Rudolf J Schneider
- Department of Analytical Chemistry, Reference Materials, BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Valdemar I Esteves
- CESAM, Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
| | - Diana L D Lima
- CESAM, Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
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Carl P, Sarma D, Gregório BJR, Hoffmann K, Lehmann A, Rurack K, Schneider RJ. Wash-Free Multiplexed Mix-and-Read Suspension Array Fluorescence Immunoassay for Anthropogenic Markers in Wastewater. Anal Chem 2019; 91:12988-12996. [DOI: 10.1021/acs.analchem.9b03040] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Peter Carl
- Department of Analytical Chemistry; Reference Materials, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Strasse 11, D-12489 Berlin, Germany
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, D-12489 Berlin, Germany
| | - Dominik Sarma
- Department of Analytical Chemistry; Reference Materials, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Strasse 11, D-12489 Berlin, Germany
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, D-12489 Berlin, Germany
| | - Bruno J. R. Gregório
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Kristin Hoffmann
- Department of Analytical Chemistry; Reference Materials, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Strasse 11, D-12489 Berlin, Germany
| | - Andreas Lehmann
- Department of Analytical Chemistry; Reference Materials, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Strasse 11, D-12489 Berlin, Germany
| | - Knut Rurack
- Department of Analytical Chemistry; Reference Materials, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Strasse 11, D-12489 Berlin, Germany
| | - Rudolf J. Schneider
- Department of Analytical Chemistry; Reference Materials, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Strasse 11, D-12489 Berlin, Germany
- Technische Universität Berlin, Straße des 17. Juni 135, D-10623 Berlin, Germany
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6
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Sarma D, Carl P, Climent E, Schneider RJ, Rurack K. Multifunctional Polystyrene Core/Silica Shell Microparticles with Antifouling Properties for Bead-Based Multiplexed and Quantitative Analysis. ACS APPLIED MATERIALS & INTERFACES 2019; 11:1321-1334. [PMID: 30507151 DOI: 10.1021/acsami.8b10306] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Commercial bead-based assays are commonly built upon polystyrene particles. The polymeric carrier can be encoded with organic dyes and has ideal material properties for cytometric applications such as low density and high refractive index. However, functional groups are conventionally integrated during polymerization and subsequent modification is limited to the reactivity of those groups. Additionally, polystyrene as the core material leads to many hydrophobic areas still being present on the beads' surfaces even after functionalization, rendering the particles prone to nonspecific adsorption during an application. The latter calls for several washing steps and the use of additives in (bio)analytical assays. In this contribution, we show how these limitations can be overcome by using monodisperse polystyrene (PS) core/silica (SiO2) shell particles (SiO2@PS). Two different hydrophobic BODIPY (boron-dipyrromethene) dyes were encapsulated inside a poly(vinylpyrrolidone) (PVP) -stabilized polystyrene core in different concentrations to create 5-plex arrays in two separate detection channels of a cytometer. A subsequent modification of the silica shell with an equimolar APTES/PEGS (aminopropyltriethoxysilane/polyethylene glycol silane) blend added multifunctional properties to the hybrid core/shell microparticles in a single step: APTES provides amino groups for the attachment of a caffeine derivative (as a hapten) to create antigen-coupled microspheres; the PEG moiety effectively suppresses nonspecific binding of antibodies, endowing the surface with antifouling properties. The particles were applied in a competitive fluorescence immunoassay in suspension, and a highly selective wash-free assay for the detection of caffeine in beverages was developed as a proof of concept.
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Affiliation(s)
- Dominik Sarma
- Department of Analytical Chemistry; Reference Materials , Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Straße 11 , 12489 Berlin , Germany
- Department of Chemistry , Humboldt-Universität zu Berlin , Brook-Taylor-Straße 2 , 12489 Berlin , Germany
| | - Peter Carl
- Department of Analytical Chemistry; Reference Materials , Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Straße 11 , 12489 Berlin , Germany
- Department of Chemistry , Humboldt-Universität zu Berlin , Brook-Taylor-Straße 2 , 12489 Berlin , Germany
| | - Estela Climent
- Department of Analytical Chemistry; Reference Materials , Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Straße 11 , 12489 Berlin , Germany
| | - Rudolf J Schneider
- Department of Analytical Chemistry; Reference Materials , Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Straße 11 , 12489 Berlin , Germany
- Technische Universität Berlin , Straße des 17. Juni 135 , 10623 Berlin , Germany
| | - Knut Rurack
- Department of Analytical Chemistry; Reference Materials , Bundesanstalt für Materialforschung und -prüfung (BAM) , Richard-Willstätter-Straße 11 , 12489 Berlin , Germany
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7
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Carvalho AM, Montes CV, Schneider RJ, Madder A. An Anticaffeine Antibody-Oligonucleotide Conjugate for DNA-Directed Immobilization in Environmental Immunoarrays. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:14834-14841. [PMID: 30089211 DOI: 10.1021/acs.langmuir.8b01347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The development of fast and cheap high-throughput platforms for the detection of environmental contaminants is of particular importance to understand the human-related impact on the environment. The application of DNA-directed immobilization (DDI) of IgG molecules is currently limited to the clinical diagnostics scenario, possibly because of the high costs of production of such addressable platforms. We here describe the efficient and specific hybridization of an antibody-oligonucleotide conjugate to a short 12-mer capture probe. The specific antibody used is a monoclonal antibody against caffeine, a stimulant and important anthropogenic marker. With this work, we hope to contribute to broadening the application potential of DDI to environmental markers in order to develop cheaper and more stable high-throughput screening platforms for standard routine analysis of pollutants in a variety of complex matrices.
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Affiliation(s)
- Ana Margarida Carvalho
- Ghent University , Faculty of Sciences, Department of Organic and Macromolecular Chemistry, Organic and Biomimetic Chemistry Research Group , Krijgslaan 281 (S4) , 9000 Ghent , Belgium
- BAM Federal Institute for Materials Research and Testing , Department of Analytical Chemistry; Reference Materials , Richard-Willstätter-Str. 11 , D-12489 Berlin , Germany
| | - Cinthya Véliz Montes
- BAM Federal Institute for Materials Research and Testing , Department of Analytical Chemistry; Reference Materials , Richard-Willstätter-Str. 11 , D-12489 Berlin , Germany
| | - Rudolf J Schneider
- BAM Federal Institute for Materials Research and Testing , Department of Analytical Chemistry; Reference Materials , Richard-Willstätter-Str. 11 , D-12489 Berlin , Germany
| | - Annemieke Madder
- Ghent University , Faculty of Sciences, Department of Organic and Macromolecular Chemistry, Organic and Biomimetic Chemistry Research Group , Krijgslaan 281 (S4) , 9000 Ghent , Belgium
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Lopez-Sanchez RDC, Lara-Diaz VJ, Aranda-Gutierrez A, Martinez-Cardona JA, Hernandez JA. HPLC Method for Quantification of Caffeine and Its Three Major Metabolites in Human Plasma Using Fetal Bovine Serum Matrix to Evaluate Prenatal Drug Exposure. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2018; 2018:2085059. [PMID: 30186659 PMCID: PMC6109507 DOI: 10.1155/2018/2085059] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 06/27/2018] [Indexed: 06/08/2023]
Abstract
Caffeine is recognized as the first-line therapeutic agent for apnea of prematurity. The dosage regimen is 10 mg/kg loading dose and 2.5 mg/kg maintenance dose. However, the plasma concentration achieved, not always, is therapeutically useful. It makes necessary to increase the doses to reach plasma concentration up to 30 or 35 μg/mL or even higher to attain therapeutic effect. To study why neonates have these differences, and whether these effects are linked to prenatal caffeine exposure, we had to develop an analytical method for an accurate measurement of caffeine and metabolites concentration. The analysis was carried out using fetal bovine serum (FBS) as biological matrix in a high-performance liquid chromatography with an ultraviolet detector method. This method allows acceptable chromatographic resolution between analytes in 15 minutes. It was validated and proved to be linear in the 0.1-40 µg/mL range for caffeine, paraxanthine, theobromine, and theophylline in the same chromatographic analysis. Accuracy for quality control samples for intra- and interday assays was ranged from 96.5 to 105.2% and 97.1 to 106.2%. Precision had CV no more than 10% in all concentration levels for all analytes. No differences were observed between quantification in human and FBS. This method was applied to quantify plasma drug concentration in mothers and their newborns in a Mexican northeast population. In our study, we confirmed self-reported caffeine maternal intake in 85.2% (n=23); meanwhile, in their newborn's plasma, it was detected only in 78% (n=21). Caffeine plasma concentrations in mother and newborn had a linear relationship, and no differences were observed between groups (mothers versus children). These results suggest that our analytical method and substitution of biological matrix was linear, precise, and accurate for caffeine quantification and could be used for measuring prenatal exposure and let us to study, in the future, concentration differences observed during apnea clinical treatment.
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Affiliation(s)
- Rosa del Carmen Lopez-Sanchez
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Ave. Morones Prieto 3000, 64710 Monterrey, NL, Mexico
| | - Victor Javier Lara-Diaz
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Ave. Morones Prieto 3000, 64710 Monterrey, NL, Mexico
| | - Alejandro Aranda-Gutierrez
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Ave. Morones Prieto 3000, 64710 Monterrey, NL, Mexico
| | - Jorge A. Martinez-Cardona
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Ave. Morones Prieto 3000, 64710 Monterrey, NL, Mexico
| | - Jose A. Hernandez
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Ave. Morones Prieto 3000, 64710 Monterrey, NL, Mexico
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Abdelshafi NA, Panne U, Schneider RJ. Screening for cocaine on Euro banknotes by a highly sensitive enzyme immunoassay. Talanta 2017; 165:619-624. [DOI: 10.1016/j.talanta.2017.01.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 12/30/2016] [Accepted: 01/03/2017] [Indexed: 10/20/2022]
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10
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Baldofski S, Hoffmann H, Lehmann A, Breitfeld S, Garbe LA, Schneider RJ. Enzyme-linked immunosorbent assay (ELISA) for the anthropogenic marker isolithocholic acid in water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 182:612-619. [PMID: 27544648 DOI: 10.1016/j.jenvman.2016.08.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 08/08/2016] [Accepted: 08/09/2016] [Indexed: 06/06/2023]
Abstract
Bile acids are promising chemical markers to assess the pollution of water samples with fecal material. This study describes the optimization and validation of a direct competitive enzyme-linked immunosorbent assay for the bile acid isolithocholic acid (ILA). The quantification range of the optimized assay was between 0.09 and 15 μg/L. The assay was applied to environmental water samples. Most studies until now were focused on bile acid fractions in the particulate phase of water samples. In order to avoid tedious sample preparation, we undertook to evaluate the dynamics and significance of ILA levels in the aqueous phase. Very low concentrations in tap and surface water samples made a pre-concentration step necessary for this matrix as well as for wastewater treatment plant (WWTP) effluent. Mean recoveries for spiked water samples were between 97% and 109% for tap water and WWTP influent samples and between 102% and 136% for WWTP effluent samples. 90th percentiles of intra-plate and inter-plate coefficients of variation were below 10% for influents and below 20% for effluents and surface water. ILA concentrations were quantified in the range of 33-72 μg/L in influent, 21-49 ng/L in effluent and 18-48 ng/L in surface water samples. During wastewater treatment the ILA levels were reduced by more than 99%. ILA concentrations of influents determined by ELISA and LC-MS/MS were in good agreement. However, findings in LC-ELISA experiments suggest that the true ILA levels in concentrated samples are lower due to interfering effects of matrix compounds and/or cross-reactants. Yet, the ELISA will be a valuable tool for the performance check and comparison of WWTPs and the localization of fecal matter input into surface waters.
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Affiliation(s)
- Stefanie Baldofski
- Bundesanstalt für Materialforschung und -prüfung (BAM), 12205 Berlin, Germany; Technische Universität Berlin, 10623 Berlin, Germany
| | - Holger Hoffmann
- Bundesanstalt für Materialforschung und -prüfung (BAM), 12205 Berlin, Germany; Humboldt-Universität zu Berlin, 10099 Berlin, Germany
| | - Andreas Lehmann
- Bundesanstalt für Materialforschung und -prüfung (BAM), 12205 Berlin, Germany
| | - Stefan Breitfeld
- Bundesanstalt für Materialforschung und -prüfung (BAM), 12205 Berlin, Germany
| | | | - Rudolf J Schneider
- Bundesanstalt für Materialforschung und -prüfung (BAM), 12205 Berlin, Germany; Technische Universität Berlin, 10623 Berlin, Germany.
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Chen Y, Cui X, Wu P, Jiang Z, Jiao L, Hu Q, Eremin SA, Zhao S. Development of a Homologous Fluorescence Polarization Immunoassay for Diisobutyl Phthalate in Romaine Lettuce. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0596-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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12
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Bever CS, Dong JX, Vasylieva N, Barnych B, Cui Y, Xu ZL, Hammock BD, Gee SJ. VHH antibodies: emerging reagents for the analysis of environmental chemicals. Anal Bioanal Chem 2016; 408:5985-6002. [PMID: 27209591 DOI: 10.1007/s00216-016-9585-x] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Revised: 03/24/2016] [Accepted: 04/19/2016] [Indexed: 01/28/2023]
Abstract
A VHH antibody (or nanobody) is the antigen binding fragment of heavy chain only antibodies. Discovered nearly 25 years ago, they have been investigated for their use in clinical therapeutics and immunodiagnostics, and more recently for environmental monitoring applications. A new and valuable immunoreagent for the analysis of small molecular weight environmental chemicals, VHH will overcome many pitfalls encountered with conventional reagents. In the work so far, VHH antibodies often perform comparably to conventional antibodies for small molecule analysis, are amenable to numerous genetic engineering techniques, and show ease of adaption to other immunodiagnostic platforms for use in environmental monitoring. Recent reviews cover the structure and production of VHH antibodies as well as their use in clinical settings. However, no report focuses on the use of these VHH antibodies to detect small environmental chemicals (MW < 1500 Da). This review article summarizes the efforts made to produce VHHs to various environmental targets, compares the VHH-based assays with conventional antibody assays, and discusses the advantages and limitations in developing these new antibody reagents particularly to small molecule targets. Graphical Abstract Overview of the production of VHHs to small environmental chemicals and highlights of the utility of these new emerging reagents.
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Affiliation(s)
- Candace S Bever
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Jie-Xian Dong
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Natalia Vasylieva
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Bogdan Barnych
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Yongliang Cui
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA.,Department of Oral Biology, School of Dental Medicine, University of Buffalo, State University of New York, Buffalo, NY, 14214, USA
| | - Zhen-Lin Xu
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Bruce D Hammock
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Shirley J Gee
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA.
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13
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Nanjundaiah S, Krishna H, Bhatt P. Fluorescence Based Turn-on Probe for the Determination of Caffeine Using Europium-Tetracycline as Energy Transfer Complex. J Fluoresc 2016; 26:1115-21. [DOI: 10.1007/s10895-016-1803-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 03/27/2016] [Indexed: 01/08/2023]
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14
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Chan KK, Webster RD. Solid Phase Extraction - Voltammetric Coupled Detection of Caffeine in Acetonitrile. ELECTROANAL 2015. [DOI: 10.1002/elan.201500383] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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15
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Silva CP, Lima DLD, Schneider RJ, Otero M, Esteves VI. Evaluation of the anthropogenic input of caffeine in surface waters of the north and center of Portugal by ELISA. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 479-480:227-232. [PMID: 24561298 DOI: 10.1016/j.scitotenv.2014.01.120] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 01/29/2014] [Accepted: 01/29/2014] [Indexed: 06/03/2023]
Abstract
This study comprises the development of an enzyme-linked immunosorbent assay (ELISA) for the quantification of caffeine in complex aqueous matrices without any sample clean-up procedure. Salinity and dissolved organic matter were selected as potential interfering agents. The addition of a sample buffer containing bovine serum albumin (BSA) prior to the sample was found to decrease the influence of those interfering agents. The working range of the developed method was 0.1-100 μg L(-1). Quantification of caffeine was possible in 43 out of 51 real aqueous samples, at values between <LOD and 15 μg L(-1). Results correlate well with those obtained by LC-MS/MS. To the best of our knowledge this is the first study dealing with the quantification of caffeine in Portugal's surface waters.
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Affiliation(s)
- Carla Patrícia Silva
- CESAM & Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Diana L D Lima
- CESAM & Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; Department of Complementary Sciences, Superior School of Health Technology of Coimbra, Rua 5 de Outubro, S. Martinho do Bispo, Apartado 7006, 3040-854 Coimbra, Portugal
| | - Rudolf J Schneider
- BAM Federal Institute for Materials Research and Testing, Department of Analytical Chemistry, Reference Materials, Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Marta Otero
- CESAM & Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; Department of Applied Chemistry and Physics, University of León, Campus de Vegazana, 24071 León, Spain
| | - Valdemar I Esteves
- CESAM & Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
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16
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Oberleitner L, Grandke J, Mallwitz F, Resch-Genger U, Garbe LA, Schneider RJ. Fluorescence polarization immunoassays for the quantification of caffeine in beverages. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:2337-2343. [PMID: 24597592 DOI: 10.1021/jf4053226] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Homogeneous fluorescence polarization immunoassays (FPIAs) were developed and compared for the determination of caffeine in beverages and cosmetics. FPIAs were performed in cuvettes in a spectrometer for kinetic FP measurements as well as in microtiter plates (MTPs) on a multimode reader. Both FPIAs showed measurement ranges in the μg/L range and were performed within 2 and 20 min, respectively. For the application on real samples, high coefficients of variations (CVs) were observed for the performance in MTPs; the CVs for FPIAs in cuvettes were below 4%. The correlations between this method and reference methods were satisfying. The sensitivity was sufficient for all tested samples including decaffeinated coffee without preconcentration steps. The FPIA in cuvettes allows a fast, precise, and automated quantitative analysis of caffeine in consumer products, whereas FPIAs in MTPs are suitable for semiquantitative high-throughput screenings. Moreover, specific quality criteria for heterogeneous assays were applied to homogeneous immunoassays.
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Affiliation(s)
- Lidia Oberleitner
- BAM Federal Institute for Materials Research and Testing , Richard-Willstätter-Straße 11, 12489 Berlin, Germany
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17
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Make caffeine visible: a fluorescent caffeine "traffic light" detector. Sci Rep 2014; 3:2255. [PMID: 23877095 PMCID: PMC3719075 DOI: 10.1038/srep02255] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 06/10/2013] [Indexed: 02/02/2023] Open
Abstract
Caffeine has attracted abundant attention due to its extensive existence in beverages and medicines. However, to detect it sensitively and conveniently remains a challenge, especially in resource-limited regions. Here we report a novel aqueous phase fluorescent caffeine sensor named Caffeine Orange which exhibits 250-fold fluorescence enhancement upon caffeine activation and high selectivity. Nuclear magnetic resonance spectroscopy and Fourier transform infrared spectroscopy indicate that π-stacking and hydrogen-bonding contribute to their interactions while dynamic light scattering and transmission electron microscopy experiments demonstrate the change of Caffeine Orange ambient environment induces its fluorescence emission. To utilize this probe in real life, we developed a non-toxic caffeine detection kit and tested it for caffeine quantification in various beverages. Naked-eye sensing of various caffeine concentrations was possible based on color changes upon irradiation with a laser pointer. Lastly, we performed the whole system on a microfluidic device to make caffeine detection quick, sensitive and automated.
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18
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Bullough F, Fenech C, Bridle H. Advances in Water Quality Monitoring of Inorganics: Current Trends. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/jwarp.2013.54a007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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19
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Grandke J, Oberleitner L, Resch-Genger U, Garbe LA, Schneider RJ. Quality assurance in immunoassay performance—comparison of different enzyme immunoassays for the determination of caffeine in consumer products. Anal Bioanal Chem 2012; 405:1601-11. [DOI: 10.1007/s00216-012-6596-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Revised: 11/19/2012] [Accepted: 11/21/2012] [Indexed: 11/24/2022]
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20
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Carvalho JJ, Weller MG, Panne U, Schneider RJ. Monitoring Caffeine in Human Saliva Using a Newly Developed ELISA. ANAL LETT 2012. [DOI: 10.1080/00032719.2012.696226] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Bahlmann A, Carvalho JJ, Weller MG, Panne U, Schneider RJ. Immunoassays as high-throughput tools: monitoring spatial and temporal variations of carbamazepine, caffeine and cetirizine in surface and wastewaters. CHEMOSPHERE 2012; 89:1278-1286. [PMID: 22682895 DOI: 10.1016/j.chemosphere.2012.05.020] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Revised: 05/11/2012] [Accepted: 05/14/2012] [Indexed: 06/01/2023]
Abstract
Carbamazepine (CBZ), caffeine and cetirizine were monitored by enzyme-linked immunosorbent assays (ELISAs) in surface and wastewaters from Berlin, Germany. This fast and cost-efficient method enabled to assess the spatial and temporal variation of these anthropogenic markers in a high-throughput screening. CBZ and cetirizine were detected by the same antibody, which selectively discriminates between both compounds depending on the pH value used in the incubation step. To our best knowledge, this is the first dual-analyte immunoassay working with a single antibody. The frequent sampling with 487 samples being processed allowed for the repeated detection of unusually high concentrations of CBZ and caffeine. ELISA results correlate well with the ones obtained by liquid chromatography tandem mass spectrometry (LC-MS/MS). Caffeine concentrations found in surface waters were elevated by combined sewer overflows after stormwater events. During the hay fever season, the concentrations of the antihistamine drug cetirizine increased in both surface and wastewaters. Caffeine was almost completely removed during wastewater treatment, while CBZ and cetirizine were found to be more persistent. The maximum concentrations of caffeine, CBZ and cetirizine found in influent wastewater by LC-MS/MS were 470, 5.0 and 0.49 μg L(-1), while in effluent wastewater the concentrations were 0.22, 4.5 and 0.51 μg L(-1), respectively. For surface waters, concentrations up to 3.3, 4.5 and 0.72 μg L(-1) were found, respectively.
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Affiliation(s)
- Arnold Bahlmann
- BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Str. 11, D-12489 Berlin, Germany
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22
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Hisada H, Tsutsumi H, Ishida H, Hata Y. High production of llama variable heavy-chain antibody fragment (VHH) fused to various reader proteins by Aspergillus oryzae. Appl Microbiol Biotechnol 2012; 97:761-6. [DOI: 10.1007/s00253-012-4211-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 05/21/2012] [Accepted: 06/03/2012] [Indexed: 10/28/2022]
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23
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Calisto V, Bahlmann A, Schneider RJ, Esteves VI. Application of an ELISA to the quantification of carbamazepine in ground, surface and wastewaters and validation with LC-MS/MS. CHEMOSPHERE 2011; 84:1708-1715. [PMID: 21592542 DOI: 10.1016/j.chemosphere.2011.04.072] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Revised: 02/02/2011] [Accepted: 04/28/2011] [Indexed: 05/30/2023]
Abstract
Carbamazepine is a psychiatric pharmaceutical widely detected in aquatic environments. Due to its generalized occurrence and environmental persistence it might be considered as an anthropogenic pollution indicator. In this research, a previously developed enzyme-linked immunosorbent assay (ELISA), based on a commercial monoclonal antibody, was applied to the quantification of carbamazepine in ground, surface and wastewaters and results were validated by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The performance of the applied ELISA methodology was tested in the presence of high concentrations of sodium chloride and dissolved organic matter. The method was not significantly affected by matrix effects, being adequate for the quantification of carbamazepine in environmental samples, even without sample pre-treatment. This method allows the quantification of carbamazepine in the range of 0.03-10 μg L(-1), with a relative error lower than 30%. Due to a pH dependent cross-reactivity with cetirizine, an antihistaminic drug, the assay also enabled the quantification of cetirizine in the samples. The application of the developed method to the quantification of carbamazepine was performed by using environmental samples with very different matrices, collected in the geographical area of Ria de Aveiro, an estuarine system located in the North of Portugal. Carbamazepine was detected in all analyzed wastewater samples and in one surface water with concentrations between 0.1 and 0.7 μg L(-1). Validation with LC-MS/MS revealed that results obtained by ELISA are 2-28% overestimated, which was considered highly satisfactory due to the absence of sample pre-treatments.
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Affiliation(s)
- Vânia Calisto
- Department of Chemistry and CESAM (Centre for Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
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A Novel Immunoreagent for the Specific and Sensitive Detection of the Explosive Triacetone Triperoxide (TATP). BIOSENSORS-BASEL 2011; 1:93-106. [PMID: 25586922 PMCID: PMC4264363 DOI: 10.3390/bios1030093] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2011] [Revised: 06/14/2011] [Accepted: 07/01/2011] [Indexed: 01/21/2023]
Abstract
Triacetone triperoxide (TATP) is a primary explosive, which was used in various terrorist attacks in the past. For the development of biosensors, immunochemical µ-TAS, electronic noses, immunological test kits, or test strips, the availability of antibodies of high quality is crucial. Recently, we presented the successful immunization of mice, based on the design, synthesis, and conjugation of a novel TATP derivative. Here, the long-term immunization of rabbits is shown, which resulted in antibodies of extreme selectivity and more than 1,000 times better affinity in relation to the antibodies from mice. Detection limits below 10 ng L−1 (water) were achieved. The working range covers more than four decades, calculated from a precision profile. The cross-reactivity tests revealed an extraordinary selectivity of the antibodies—not a single compound could be identified as a relevant cross-reactant. The presented immunoreagent might be a major step for the development of highly sensitive and selective TATP detectors particularly for security applications.
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25
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Walter MA, Pfeifer D, Kraus W, Emmerling F, Schneider RJ, Panne U, Weller MG. Triacetone triperoxide (TATP): hapten design and development of antibodies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:15418-15423. [PMID: 20815355 DOI: 10.1021/la1018339] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Triacetone triperoxide (TATP), an improvised explosive, is a potential security threat because of its cost-efficient synthesis and the difficulty in detecting it. A highly selective antibody could provide the necessary specificity to the detection process. To obtain antibodies, a hapten made from acetone, hydrogen peroxide, and 7-oxooctanoic acid has been designed, synthesized, and confirmed by NMR that displays the utmost similarity to the analyte. The single-crystal X-ray structures of the solvated species TATP·methanol (1:1) and the TATP derivate were determined. In both compounds, the molecules exhibit D(3) symmetry and adopt a twisted boat-chair conformation. The hapten was coupled to bovine serum albumin, and mice were immunized. An immune response against TATP was elicited, and selective antibodies were detected in the mouse serum, which should be very useful for the development of a TATP biosensor system. An ELISA with a limit of detection for TATP of 65 μg L(-1) is shown.
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Affiliation(s)
- Maria Astrid Walter
- BAM Federal Institute for Materials Research and Testing, Richard-Willstätter-Strasse 11, D-12489 Berlin, Germany
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