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Tackling the issue of healthcare associated infections through point-of-care devices. Trends Analyt Chem 2023. [DOI: 10.1016/j.trac.2023.116983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Paramithiotis S. Molecular Targets for Foodborne Pathogenic Bacteria Detection. Pathogens 2023; 12:pathogens12010104. [PMID: 36678453 PMCID: PMC9865778 DOI: 10.3390/pathogens12010104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/30/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
The detection of foodborne pathogenic bacteria currently relies on their ability to grow on chemically defined liquid and solid media, which is the essence of the classical microbiological approach. Such procedures are time-consuming and the quality of the result is affected by the selectivity of the media employed. Several alternative strategies based on the detection of molecular markers have been proposed. These markers may be cell constituents, may reside on the cell envelope or may be specific metabolites. Each marker provides specific advantages and, at the same time, suffers from specific limitations. The food matrix and chemical composition, as well as the accompanying microbiota, may also severely compromise detection. The aim of the present review article is to present and critically discuss all available information regarding the molecular targets that have been employed as markers for the detection of foodborne pathogens. Their strengths and limitations, as well as the proposed alleviation strategies, are presented, with particular emphasis on their applicability in real food systems and the challenges that are yet to be effectively addressed.
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Affiliation(s)
- Spiros Paramithiotis
- Laboratory of Food Process Engineering, Department of Food Science and Human Nutrition, Agricultural University of Athens, 75 Iera Odos St., 11855 Athens, Greece
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Liu Y, Chen Y, Xu W, Song D, Han X, Long F. Rapid, Sensitive On-Site Detection of Deoxynivalenol in Cereals Using Portable and Reusable Evanescent Wave Optofluidic Immunosensor. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19073759. [PMID: 35409443 PMCID: PMC8997826 DOI: 10.3390/ijerph19073759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/03/2022] [Accepted: 03/07/2022] [Indexed: 02/04/2023]
Abstract
This paper develops an improved portable and reusable evanescent wave optofluidic immunosensor (OIP-v2) for rapid and sensitive on-site determination of deoxynivalenol (DON), one of the most frequently detected mycotoxins mainly produced by Fusarium species. Using the bifunctional reagent N,N′-Disuccinimidyl carbonate, deoxynivalenol-bovine-serum-albumin (DON-BSA) were covalently modified onto a bio-probe surface as biorecognition elements, whose robustness allowed it to perform multiple detections without significant activity loss. An indirect competitive immunoassay strategy was applied for DON detection. Under optimal conditions, the limit of detection of 0.11 μg/L and the linear dynamic detection range of 0.43 to 36.61 μg/L was obtained when the concentration of the Cy5.5-anti-DON antibody was 0.25 μg/mL. The OIP-v2 was also applied to detect DON in various cereals, and the recoveries ranged from 81% to 127%. The correlation between OIP-v2 and enzyme-linked immunosorbent assay (ELISA) through the simultaneous detection of maize-positive samples was in good agreement (R2 = 0.9891).
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Affiliation(s)
- Yanping Liu
- School of Environment and Natural Resources, Renmin University of China, Beijing 100874, China; (Y.L.); (W.X.); (D.S.); (X.H.)
| | - Yuyang Chen
- China National Intellectual Property Administration, Beijing 100088, China;
| | - Wenjuan Xu
- School of Environment and Natural Resources, Renmin University of China, Beijing 100874, China; (Y.L.); (W.X.); (D.S.); (X.H.)
| | - Dan Song
- School of Environment and Natural Resources, Renmin University of China, Beijing 100874, China; (Y.L.); (W.X.); (D.S.); (X.H.)
| | - Xiangzhi Han
- School of Environment and Natural Resources, Renmin University of China, Beijing 100874, China; (Y.L.); (W.X.); (D.S.); (X.H.)
| | - Feng Long
- School of Environment and Natural Resources, Renmin University of China, Beijing 100874, China; (Y.L.); (W.X.); (D.S.); (X.H.)
- Correspondence:
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Leitão C, Leal-Junior A, Almeida AR, Pereira SO, Costa FM, Pinto JL, Marques C. Cortisol AuPd plasmonic unclad POF biosensor. ACTA ACUST UNITED AC 2021; 29:e00587. [PMID: 33489788 PMCID: PMC7809164 DOI: 10.1016/j.btre.2021.e00587] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 11/24/2020] [Accepted: 12/31/2020] [Indexed: 02/04/2023]
Abstract
This paper presents the development and feasibility tests of a cortisol immunosensor. The sensor is based on surface plasmon resonance (SPR) using an unclad plastic optical fiber (POF) in which the SPR is used as sensitivity enhancer, promoted by a gold/palladium (AuPd) alloy coating. The AuPd coated fibers were functionalized with an anti-cortisol antibody and passivated with bovine serum albumin (BSA) to be tested in the presence of cortisol as target analyte. The antibody-antigen binding reaction caused a variation of the refractive index on the surface of the AuPd coating, which leads to a shift of the SPR signature wavelength. The sensor was tested for different cortisol concentrations, ranging from 0.005 to 10 ng/mL. The reported biosensor presented a total wavelength shift of 15 nm for the testing range, putting in evidence a high sensitivity. Control tests for selectivity assessment were also performed. Concentrations as high as 10 ng/mL of cortisol, in a sensor functionalized with anti-hCG antibodies, only resulted in 1 nm variation of the resonance wavelength, 15 times lower than the one functionalized with the anti-cortisol antibodies, which indicates a high selectivity for the proposed approach. For this sensing approach the limit of detection (LOD) was determined to be 1 pg/mL. The proposed SPR based POF sensor has a low-cost interrogation method, high sensitivity and low LOD, straightforward signal processing and find important applications in different biological fields.
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Affiliation(s)
- Cátia Leitão
- i3N, Department of Physics, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Arnaldo Leal-Junior
- Graduate Program of Electrical Engineering & Mechanical Engineering Department, Federal University of Espirito Santo, Vitória, 29075-910, Brazil
| | - Ana R Almeida
- i3N, Department of Physics, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Sónia O Pereira
- i3N, Department of Physics, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Florinda M Costa
- i3N, Department of Physics, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - João L Pinto
- i3N, Department of Physics, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - C Marques
- i3N, Department of Physics, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
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Zheng L, Cai G, Qi W, Wang S, Wang M, Lin J. Optical Biosensor for Rapid Detection of Salmonella typhimurium Based on Porous Gold@Platinum Nanocatalysts and a 3D Fluidic Chip. ACS Sens 2020; 5:65-72. [PMID: 31875386 DOI: 10.1021/acssensors.9b01472] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Screening of pathogenic bacteria is a key to avoid food poisoning. The major drawbacks of existing assays for foodborne bacteria detection include long time for culture, complex DNA extraction for the polymerase chain reaction (PCR), and low sensitivity for enzyme-linked immunosorbent assay (ELISA), greatly limiting their practical applications. Here, we developed a sensitive optical biosensor based on porous gold@platinum nanocatalysts (Au@PtNCs) and a passive three-dimensional (3D) micromixer for fast detection of Salmonella typhimurium. The target Salmonella cells were first separated using immunomagnetic nanoparticles and the passive 3D micromixer. Then, immune Au@PtNCs were labeled onto the target cells as signal output to catalyze hydrogen peroxide-3,3',5,5'-tetramethylbenzidine. Finally, the absorbance was measured at 652 nm to calculate the bacterial amount. This optical biosensor could detect Salmonella at concentrations from 1.8 × 101 to 1.8 × 107 CFU/mL in 1 h. Its detection limit was calculated to be 17 CFU/mL. Besides, this passive 3D micromixer could magnetically separate 99% of target bacteria from the sample in 10 min. This biosensor has the potential to be extended to detect other bacteria by changing the antibodies.
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Affiliation(s)
- Lingyan Zheng
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Gaozhe Cai
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Wuzhen Qi
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Siyuan Wang
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Maohua Wang
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Jianhan Lin
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
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Sato RH, Kosaka PM, Omori ÁT, Ferreira EA, Petri DFS, Malvar Ó, Domínguez CM, Pini V, Ahumada Ó, Tamayo J, Calleja M, Cunha RLOR, Fiorito PA. Development of a methodology for reversible chemical modification of silicon surfaces with application in nanomechanical biosensors. Biosens Bioelectron 2019; 137:287-293. [PMID: 31125818 DOI: 10.1016/j.bios.2019.04.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 04/09/2019] [Accepted: 04/14/2019] [Indexed: 10/26/2022]
Abstract
Hypervalent tellurium compounds have a particular reactivity towards thiol compounds which are related to their biological properties. In this work, this property was assembled to tellurium-functionalized surfaces. These compounds were used as linkers in the immobilization process of thiolated biomolecules (such as DNA) on microcantilever surfaces. The telluride derivatives acted as reversible binding agents due to their redox properties, providing the regeneration of microcantilever surfaces and allowing their reuse for further biomolecules immobilizations, recycling the functional surface. Initially, we started from the synthesis of 4-((3-((4-methoxyphenyl) tellanyl) phenyl) amino)-4-oxobutanoic acid, a new compound, which was immobilized on a silicon surface. In nanomechanical systems, the detection involved a hybridization study of thiolated DNA sequences. Fluorescence microscopy technique was used to confirm the immobilization and removal of the telluride-DNA system and provided revealing results about the potentiality of applying redox properties to chalcogen derivatives at surfaces.
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Affiliation(s)
- Roseli H Sato
- CCNH, Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, UFABC, Avenida dos Estados, 5001, 09210-580, Santo André, São Paulo, Brazil
| | - Priscila M Kosaka
- Instituto Micro y Nanotecnología (IMN-CNM), CSIC, Isaac Newton 8 (PTM), Tres Cantos, Madrid, Spain
| | - Álvaro T Omori
- CCNH, Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, UFABC, Avenida dos Estados, 5001, 09210-580, Santo André, São Paulo, Brazil
| | - Edgard A Ferreira
- Escola de Engenharia, Universidade Presbiteriana Mackenzie, 01302-907, São Paulo, SP, Brazil
| | - Denise F S Petri
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, P.O. Box 26077, São Paulo, SP, 05513-970, Brazil
| | - Óscar Malvar
- Instituto Micro y Nanotecnología (IMN-CNM), CSIC, Isaac Newton 8 (PTM), Tres Cantos, Madrid, Spain
| | - Carmen M Domínguez
- Instituto Micro y Nanotecnología (IMN-CNM), CSIC, Isaac Newton 8 (PTM), Tres Cantos, Madrid, Spain
| | - Valerio Pini
- Instituto Micro y Nanotecnología (IMN-CNM), CSIC, Isaac Newton 8 (PTM), Tres Cantos, Madrid, Spain
| | - Óscar Ahumada
- Mecwins S.A, Plaza de la Encina 10-11, Núcleo 5, 2 B, 28760, Tres Cantos, Madrid, Spain
| | - Javier Tamayo
- Instituto Micro y Nanotecnología (IMN-CNM), CSIC, Isaac Newton 8 (PTM), Tres Cantos, Madrid, Spain
| | - Montserrat Calleja
- Instituto Micro y Nanotecnología (IMN-CNM), CSIC, Isaac Newton 8 (PTM), Tres Cantos, Madrid, Spain
| | - Rodrigo L O R Cunha
- CCNH, Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, UFABC, Avenida dos Estados, 5001, 09210-580, Santo André, São Paulo, Brazil
| | - Pablo A Fiorito
- Centro de Investigaciones y Transferencia Villa María (CIT VM - CONICET), Instituto de Ciencias Básicas y Aplicadas, Universidad Nacional de Villa María, Av. Arturo Jauretche 1555, Villa María, C.P, 5900, Córdoba, Argentina.
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