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Jiang M, Wang A, Sun Y, Li Y, Chen Y, Zhou J, Liu H, Ding P, Qi Y, Li N, Zhang G. Development of a Gold Nanoparticle-Based Immunochromatographic Strip for Rapid Detection of Porcine Circovirus Type 2. Microbiol Spectr 2023; 11:e0195322. [PMID: 37466437 PMCID: PMC10434270 DOI: 10.1128/spectrum.01953-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 05/15/2023] [Indexed: 07/20/2023] Open
Abstract
Porcine circovirus type 2 (PCV2) is an important swine infectious pathogen that seriously threatens the global swine industry. PCV2 Cap protein is the only structural and the main immunogenic protein constituting the viral capsid. In this study, a gold nanoparticle-based immunochromatographic strip with high sensitivity and specificity was developed which could be used for rapid detection of PCV2 virions or Cap protein in research. The visual detection limit of the strip was 103.18 50% tissue culture infective does (TCID50)/mL for PCV2, and 2.03 μg/mL for PCV2 Cap protein. No cross-reactivity was observed with the PCV1 and PCV3 Cap proteins and other common swine pathogens such as porcine reproductive and respiratory syndrome virus, classical swine fever virus, pseudorabies virus, porcine epidemic diarrhea virus, porcine parvovirus, and swine influenza virus. The repeatability of the strip was good. The stability of the strip was perfect for 12 months in a dry state at room temperature. Visual results could be obtained within 5 min by simply inserting the strip into the diluted sample. The strip is a time-saving, labor-saving, and reliable tool for testing of PCV2 virions or Cap protein in research. The idea of this study might open a new perspective for the application of the strip. IMPORTANCE Porcine circovirus type 2 (PCV2) Cap protein is the only structural and the main immunogenic protein constituting the viral capsid. Although many methods can be used to identify PCV2 or PCV2 Cap protein in vaccine research, they usually require high workload and time. The developed strip can specifically detect PCV2 virions or Cap protein, and visual qualitative results can be obtained within 5 min by simply diluting the sample and inserting the strip into the sample. The final value of the strip is providing a simple and time-saving method for real-time monitoring of PCV2 antigen in vaccine research with reliable results, such as the different stages of PCV2 Cap protein expression and purification, as well as the different stages of PCV2 reproduction and purification.
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Affiliation(s)
- Min Jiang
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Aiping Wang
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan Agricultural University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Yaning Sun
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
| | - Yuan Li
- School of Life Sciences, Lanzhou University, Lanzhou, Gansu, China
| | - Yumei Chen
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Jingming Zhou
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Hongliang Liu
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Peiyang Ding
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Yanhua Qi
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Ning Li
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
| | - Gaiping Zhang
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- School of Advanced Agricultural Sciences, Peking University, Beijing, China
- Henan Agricultural University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
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2
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Mohammad SM, Hegazy LA, Abdel Hady RS, Salama MA, Hammad SK, Ibrahim SM. Real-time PCR versus traditional and Nano-based ELISA in early detection of murine trichinellosis. J Helminthol 2023; 97:e67. [PMID: 37583316 DOI: 10.1017/s0022149x23000470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
Trichinellosis is a serious foodborne zoonosis. It poses a serious risk to public health worldwide. Early serological diagnosis of trichinellosis is influenced by an immunological 'silent' phase following infection. This highlights the necessity for developing sensitive diagnostic approaches to be employed when antibodies cannot be detected. In this work, the validity of traditional ELISA, Nano-ELISA and real time polymerase chain reaction (PCR) were evaluated in early diagnosis of Trichinella spiralis. Swiss albino mice were orally infected with 100 and 300 muscle larvae/mouse. Mice were sacrificed 4, 6, 8, 10, 15, and 28 days post-infection (dpi). Blood samples were tested for circulating antigen by traditional ELISA and Nano-ELISA using anti-rabbit polyclonal IgG conjugated with AgNPs and for Rep gene by SYBR green real-time PCR. Rep gene detection by SYBR green real-time PCR could detect T. spiralis with 100% sensitivity in the mild infection group at 8 dpi, while in the severe infection group it reached 100% sensitivity at 4 dpi. Nano-ELISA could detect T. spiralis circulating antigen from 4 dpi in both mild and severe infection and reached 100% sensitivity at 8 dpi and 6 dpi in mild and severe infection, respectively. However, traditional ELISA could detect T. spiralis circulating antigen from 6 dpi and reached maximum sensitivity at 15 dpi in the mild infection group, while in the severe infection group detection began at 4 dpi and reached 100% sensitivity at 8 dpi. Nano-ELISA and real time PCR, using Rep gene, are useful tools for the detection of early T. spiralis infection even in its mild infection state.
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Affiliation(s)
- S M Mohammad
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Egypt
| | - L A Hegazy
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Egypt
| | - R S Abdel Hady
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Egypt
| | - M A Salama
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Egypt
| | - S K Hammad
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Egypt
| | - S M Ibrahim
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Egypt
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3
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Alhabbab RY. Lateral Flow Immunoassays for Detecting Viral Infectious Antigens and Antibodies. MICROMACHINES 2022; 13:1901. [PMID: 36363922 PMCID: PMC9694796 DOI: 10.3390/mi13111901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/14/2022] [Accepted: 10/19/2022] [Indexed: 05/28/2023]
Abstract
Abundant immunological assays currently exist for detecting pathogens and identifying infected individuals, making detection of diseases at early stages integral to preventing their spread, together with the consequent emergence of global health crises. Lateral flow immunoassay (LFIA) is a test characterized by simplicity, low cost, and quick results. Furthermore, LFIA testing does not need well-trained individuals or laboratory settings. Therefore, it has been serving as an attractive tool that has been extensively used during the ongoing COVID-19 pandemic. Here, the LFIA strip's available formats, reporter systems, components, and preparation are discussed. Moreover, this review provides an overview of the current LFIAs in detecting infectious viral antigens and humoral responses to viral infections.
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Affiliation(s)
- Rowa Y. Alhabbab
- Vaccines and Immunotherapy Unit, King Fahad Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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4
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Morfill C, Pankratova S, Machado P, Fernando NK, Regoutz A, Talamona F, Pinna A, Klosowski M, Wilkinson RJ, Fleck RA, Xie F, Porter AE, Kiryushko D. Nanostars Carrying Multifunctional Neurotrophic Dendrimers Protect Neurons in Preclinical In Vitro Models of Neurodegenerative Disorders. ACS APPLIED MATERIALS & INTERFACES 2022; 14:47445-47460. [PMID: 36218307 PMCID: PMC9614720 DOI: 10.1021/acsami.2c14220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 09/26/2022] [Indexed: 05/06/2023]
Abstract
A challenge in neurology is the lack of efficient brain-penetrable neuroprotectants targeting multiple disease mechanisms. Plasmonic gold nanostars are promising candidates to deliver standard-of-care drugs inside the brain but have not been trialed as carriers for neuroprotectants. Here, we conjugated custom-made peptide dendrimers (termed H3/H6), encompassing motifs of the neurotrophic S100A4-protein, onto star-shaped and spherical gold nanostructures (H3/H6-AuNS/AuNP) and evaluated their potential as neuroprotectants and interaction with neurons. The H3/H6 nanostructures crossed a model blood-brain barrier, bound to plasma membranes, and induced neuritogenesis with the AuNS, showing higher potency/efficacy than the AuNP. The H3-AuNS/NP protected neurons against oxidative stress, the H3-AuNS being more potent, and against Parkinson's or Alzheimer's disease (PD/AD)-related cytotoxicity. Unconjugated S100A4 motifs also decreased amyloid beta-induced neurodegeneration, introducing S100A4 as a player in AD. Using custom-made dendrimers coupled to star-shaped nanoparticles is a promising route to activate multiple neuroprotective pathways and increase drug potency to treat neurodegenerative disorders.
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Affiliation(s)
- Corinne Morfill
- Department
of Materials and London Centre for Nanotechnology, Imperial College, Exhibition Road, LondonSW7 2AZ, UK
| | - Stanislava Pankratova
- Department
of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen2200N, Denmark
- Comparative
Paediatrics and Nutrition, Department of Veterinary and Animal Sciences,
Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen2200N, Denmark
| | - Pedro Machado
- Centre
for Ultrastructural Imaging, Kings College
London, LondonSE1 1UL, UK
| | - Nathalie K. Fernando
- Department
of Chemistry, University College London, 20 Gordon Street, LondonWC1H 0AJ, UK
| | - Anna Regoutz
- Department
of Chemistry, University College London, 20 Gordon Street, LondonWC1H 0AJ, UK
| | - Federica Talamona
- Department
of Materials and London Centre for Nanotechnology, Imperial College, Exhibition Road, LondonSW7 2AZ, UK
| | - Alessandra Pinna
- Department
of Materials and London Centre for Nanotechnology, Imperial College, Exhibition Road, LondonSW7 2AZ, UK
- The Francis
Crick Institute, LondonNW11 AT, UK
| | - Michal Klosowski
- Department
of Materials and London Centre for Nanotechnology, Imperial College, Exhibition Road, LondonSW7 2AZ, UK
| | - Robert J. Wilkinson
- The Francis
Crick Institute, LondonNW11 AT, UK
- Imperial
College, Exhibition Road, LondonSW7 2AZ, UK
| | - Roland A. Fleck
- Centre
for Ultrastructural Imaging, Kings College
London, LondonSE1 1UL, UK
| | - Fang Xie
- Department
of Materials and London Centre for Nanotechnology, Imperial College, Exhibition Road, LondonSW7 2AZ, UK
| | - Alexandra E. Porter
- Department
of Materials and London Centre for Nanotechnology, Imperial College, Exhibition Road, LondonSW7 2AZ, UK
| | - Darya Kiryushko
- Department
of Materials and London Centre for Nanotechnology, Imperial College, Exhibition Road, LondonSW7 2AZ, UK
- Centre
for Neuroinflammation and Neurodegeneration, Imperial College London, Hammersmith Hospital Campus, Burlington Danes Building, 160 Du
Cane Road, LondonW12 0NN, UK
- Experimental
Solid State Physics Group, Department of Physics, Imperial College, Exhibition Road, LondonSW72AZ, UK
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5
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Lateral flow immunoassay for small-molecules detection in phytoproducts: a review. J Nat Med 2022; 76:521-545. [PMID: 35171397 PMCID: PMC9165253 DOI: 10.1007/s11418-022-01605-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 01/29/2022] [Indexed: 11/10/2022]
Abstract
Phytoproducts are involved in various fields of industry. Small-molecule (Mw < 900 Da) organic compounds can be used to indicate the quality of plant samples in the perspective of efficacy by measuring the necessary secondary metabolites and in the perspective of safety by measuring the adulterant level of toxic compounds. The development of reliable detection methods for these compounds in such a complicated matrix is challenging. The lateral flow immunoassay (LFA) is one of the immunoassays well-known for its simplicity, portability, and rapidity. In this review, the general principle, components, format, and application of the LFA for phytoproducts are discussed.
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6
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Comparison of Single- and Mixed-Sized Gold Nanoparticles on Lateral Flow Assay for Albumin Detection. BIOSENSORS-BASEL 2021; 11:bios11070209. [PMID: 34206883 PMCID: PMC8301757 DOI: 10.3390/bios11070209] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/17/2021] [Accepted: 06/23/2021] [Indexed: 11/16/2022]
Abstract
The sensitivity and reproducibility of the lateral flow assay can be influenced by multiple factors, such as the size of gold nanoparticles (GNPs) employed. Here, we evaluated the analytical performance of single-sized and mixed-sized GNPs using a simple lateral flow assay (LFA) platform. This platform was used as a model assay to diagnose albumin levels and demonstrate the analytical performance of single-sized and mixed-sized GNPs in LFA tests. Two sizes of GNPs@anti-bovine serum albumin (BSA) conjugate proteins were mixed at different ratios. The unique optical properties of the GNPs induced a distinguishing color-shedding effect on the single- and mixed-sized GNPs@anti-BSA conjugates interacting with the target analyte BSA spotted on the test line. The use of mixed-sized GNPs@anti-BSA conjugates enhanced signal relative to the 20 nm GNPs, and provided superior stability compared with solely employing the large GNPs (50 nm). The proposed platform in this study could provide an efficient BSA detection mechanism that can be utilized as a model biomarker for confronting chronic kidney disease.
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7
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He M, Shang N, Shen L, Liu Z. A paper-supported sandwich immunosensor based on upconversion luminescence resonance energy transfer for the visual and quantitative determination of a cancer biomarker in human serum. Analyst 2021; 145:4181-4187. [PMID: 32400772 DOI: 10.1039/c9an02307k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, a paper-supported analytical device based on a sandwich immunoreaction and luminescence resonance energy transfer (LRET) was reported for the visual and quantitative determination of a cancer biomarker, in which upconversion nanoparticles (UCNPs) were located on the surface of the paper as energy donors and gold nanoparticles (AuNPs) were used as energy acceptors. Upon the recognition of the cancer biomarker by two rationally selected antibodies, the upconversion luminescence was quenched by the AuNPs in a biomarker concentration-dependent manner. As a model target, CEA was detected using this immunosensor, and a linear relationship within 0.5-30 ng mL-1 was obtained in buffer solution, with a detection limit of 0.21 ng mL-1. The immunosensor was also applicable in 20-fold diluted human serum with a linear range of 0.5-30 ng mL-1 and a detection limit of 0.36 ng mL-1. This technique also realized the qualitative judgment of the critical concentration of CEA in serum samples by the naked eye. This approach displays great application potential for point-of-care testing in clinical applications, as well as the potentiality to be extended to other kinds of disease-related biomolecules.
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Affiliation(s)
- Mengyuan He
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China.
| | - Ning Shang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China.
| | - Lin Shen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
| | - Zhihong Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
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8
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Influence of Surfactants on the Tribological Behavior of Nanoparticle Additives Under Boundary Lubrication Conditions. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2021. [DOI: 10.1007/s13369-021-05622-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Noordin R, Yunus MH, Saidin S, Mohamed Z, Fuentes Corripio I, Rubio JM, Golkar M, Hisam S, Lee R, Mahmud R. Multi-Laboratory Evaluation of a Lateral Flow Rapid Test for Detection of Amebic Liver Abscess. Am J Trop Med Hyg 2020; 103:2233-2238. [PMID: 32996457 DOI: 10.4269/ajtmh.20-0348] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Independent evaluations of XEh Rapid®, an IgG4-based rapid dipstick test, were performed to assess its diagnostic performance to detect amebic liver abscess (ALA) using 405 samples at seven laboratories in four countries. The test showed high diagnostic specificity (97-100%) when tested with samples from healthy individuals (n = 100) and patients with other diseases (n = 151). The diagnostic sensitivity was tested with a total of 154 samples, and the results were variable. It was high in three laboratories (89-94%), and moderate (72%) and low (38%) in two other laboratories. Challenges and issues faced in the evaluation process are discussed. Nevertheless, XEh Rapid is promising to be developed into a point-of-care test in particular for resource-limited settings, and thus merits further confirmation of its diagnostic sensitivity.
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Affiliation(s)
- Rahmah Noordin
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Penang, Malaysia
| | - Muhammad Hafiznur Yunus
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Penang, Malaysia
| | - Syazwan Saidin
- Department of Biology, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, Perak, Malaysia.,Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Penang, Malaysia
| | - Zeehaida Mohamed
- Department of Medical Microbiology and Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
| | - Isabel Fuentes Corripio
- Parasitology Department, National Microbiology Centre, Instituto de Salud Carlos III, Madrid, Spain
| | - José Miguel Rubio
- Parasitology Department, National Microbiology Centre, Instituto de Salud Carlos III, Madrid, Spain
| | - Majid Golkar
- Parasitology Department, Pasteur Institute of Iran, Tehran, Iran
| | - Shamilah Hisam
- Parasitology Unit, Institute for Medical Research, NIH Complex Setia Alam, MOH Malaysia, Selangor, Malaysia
| | - Rogan Lee
- NSW Health Pathology, Centre for Infectious Disease and Microbiology Laboratory Services, Westmead Hospital, Westmead, Australia
| | - Rohela Mahmud
- Department of Parasitology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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10
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Bauer P, Mougin K, Faye D, Buch A, Ponthiaux P, Vignal V. Synthesis of 3D Dendritic Gold Nanostructures Assisted by a Templated Growth Process: Application to the Detection of Traces of Molecules. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:11015-11027. [PMID: 32867476 DOI: 10.1021/acs.langmuir.0c01857] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Complex architectures like 3D gold dendritic nanostructures were synthesized by an in situ templated growth method using a thin film of a block copolymer [polystyrene-b-poly(4-vinylpyridine)] deposited onto silicon substrates. The overall study has demonstrated the strong link between the morphology, size, and distribution of the structures and the synthetic physicochemical parameters, such as pH, reaction temperature, concentration, and nature of reactants. A nonequilibirum state of the medium has been required to create a fractal growth of the gold structures onto a prepatterned gold-seeded surface and has led to a better control of the structures' surface coverage rate. Those as-prepared nanodendrites have also exhibited high electrocatalytic activity toward a significant enhancement factor, as well as important sensitivity, thanks to tip effects. The electrochemical experiment results have demonstrated efficient adsorption and quantification of very low traces of specific molecules like glutathione or hexadecanethiol.
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Affiliation(s)
- Pierre Bauer
- Université Grenoble Alpes, Institut Neel, CNRS/UGA UPR2940, 25 Avenue des Martyrs, 38042 Grenoble, France
| | - Karine Mougin
- Université de Strasbourg, Université de Haute Alsace, Institut de Science des Matériaux, IS2M-CNRS-UMR 7361, 15 Rue Jean Starcky, 68057 Mulhouse, France
| | - Delphine Faye
- Centre Nationale d'Etudes Spatiales, 18 Avenue Édouard Belin, 31400 Toulouse, France
| | - Arnaud Buch
- Laboratoire LGPM-CentraleSupelec, 3 Rue Joliot-Curie, 91190 Gif-sur-Yvette, France
| | - Pierre Ponthiaux
- Laboratoire LGPM-CentraleSupelec, 3 Rue Joliot-Curie, 91190 Gif-sur-Yvette, France
| | - Vincent Vignal
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS-Université de Bourgogne Franche-Comté, 9 Avenue Alain Savary, 21078 Dijon, France
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11
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Noordin R, Khanbabaie S, Hafiznur Yunus M, Marti H, Nickel B, Fasihi Harandi M, Nasibi S. Evaluation of the Diagnostic Performance of Recombinant Antigen B1 for Detection of Cystic Echinococcosis Using Lateral Flow Dipstick Test. IRANIAN JOURNAL OF PARASITOLOGY 2020; 15:290-298. [PMID: 33082792 PMCID: PMC7548468 DOI: 10.18502/ijpa.v15i3.4191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Background Human echinococcosis is a neglected zoonotic disease distributed worldwide. It comprises cystic and alveolar forms, the former being the more prevalent disease. Imaging techniques are the first choice for diagnosis of cystic echinococcosis and serology is used as an additional diagnostic technique in doubtful cases or as the sole test in low-resource settings. Rapid diagnostic tests are useful and convenient for immunodiagnosis of cystic echinococcosis in endemic areas, where medical facilities often struggle with limited resources. Methods Recently, we have developed Hyd Rapid™, an IgG4 lateral flow dipstick test using recombinant antigen B1 for detection of cystic echinococcosis. This study was performed between 2016 until 2018 at the Institute for Research in Molecular Medicine, Universiti Sains Malaysia. The diagnostic performance of Hyd Rapid™ was tested in-house and at two international laboratories in Switzerland and Iran. Results The overall diagnostic sensitivity for detection of cystic and alveolar echinococcosis was 95% (56/59). Meanwhile, the diagnostic specificity, with and without exclusion of cysticercosis and fascioliasis, was 100% (n=48) and 88% (63/72), respectively. Conclusion Hyd Rapid™ detected cystic echinococcosis as well as probable cases of alveolar echinococcosis. Therefore, Hyd Rapid™ showed good potential as a serological tool for echinococcosis, and merits further evaluation.
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Affiliation(s)
- Rahmah Noordin
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 USM, Pulau Pinang, Malaysia
| | - Sam Khanbabaie
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 USM, Pulau Pinang, Malaysia
| | - Muhammad Hafiznur Yunus
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 USM, Pulau Pinang, Malaysia
| | - Hanspeter Marti
- Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Beatrice Nickel
- Swiss Tropical and Public Health Institute, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Majid Fasihi Harandi
- Research Center for Hydatid Disease in Iran, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Saeid Nasibi
- Research Center for Hydatid Disease in Iran, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
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12
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Yahaya ML, Zakaria ND, Noordin R, Abdul Razak K. Development of rapid gold nanoparticles based lateral flow assays for simultaneous detection of Shigella and Salmonella genera. Biotechnol Appl Biochem 2020; 68:1095-1106. [PMID: 32935878 DOI: 10.1002/bab.2029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 09/07/2020] [Indexed: 12/27/2022]
Abstract
Salmonella and Shigella genera are common pathogens that contaminate foods and beverages. Lateral flow assays (LFA) are commonly used to detect these pathogens. However, most of the developed LFAs are for single detection. Simultaneous detection of pathogens is required to reduce cost and time. In this work, 40 nm gold nanoparticles (AuNPs) were synthesized using the seeding growth method as labeling agent. The AuNPs were characterized and conjugated with mouse anti-Gram negative endotoxin antibody. The nitrocellulose membrane HF135 was immobilized with anti-mouse IgG antibody as a control line and two separate test lines with either anti-Shigella or anti-Salmonella antibody, respectively. Color intensity of test lines was observed for positive samples. A milk sample was used as proof of concept to mimic actual contamination. The limit of detection of the LFA was 3.0 × 106 CFU/mL for multiplex detection of Shigella flexneri and Salmonella Typhi and for both single detections. The result was comparable with the enzyme-linked immunosorbent assay (ELISA) analysis. The produced LFA could differentiate between Shigella flexneri, Shigella boydii, Salmonella Enteritidis, and Salmonella Typhi. The developed LFA was able to identify Shigella flexneri and Salmonella Typhi with good sensitivity in milk samples, thus, beneficial to ensure the safety of food before entering the market.
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Affiliation(s)
- Mohammad Lukman Yahaya
- School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia
| | - Nor Dyana Zakaria
- Nanobiotechnology Research and Innovation (NanoBri), Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia
| | - Rahmah Noordin
- Nanobiotechnology Research and Innovation (NanoBri), Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia
| | - Khairunisak Abdul Razak
- School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia.,Nanobiotechnology Research and Innovation (NanoBri), Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia
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13
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Byzova NA, Zherdev AV, Khlebtsov BN, Burov AM, Khlebtsov NG, Dzantiev BB. Advantages of Highly Spherical Gold Nanoparticles as Labels for Lateral Flow Immunoassay. SENSORS 2020; 20:s20123608. [PMID: 32604874 PMCID: PMC7348961 DOI: 10.3390/s20123608] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/20/2020] [Accepted: 06/23/2020] [Indexed: 12/30/2022]
Abstract
The use of lateral flow immunoassays (LFIAs) for rapid on-site testing is restricted by their relatively high limit of detection (LoD). One possible way to decrease the LoD is to optimize nanoparticle properties that are used as labels. We compare two types of Au nanoparticles: usual quasispherical gold nanoparticles (C-GNPs), obtained by the Turkevich–Frens method, and superspherical gold nanoparticles (S-GNPs), obtained by a progressive overgrowth technique. Average diameters were 18.6–47.5 nm for C-GNPs and 20.2–90.4 nm for S-GNPs. Cardiomarker troponin I was considered as the target analyte. Adsorption and covalent conjugation with antibodies were tested for both GNP types. For C-GNPs, the minimal LoD was obtained with 33.7 nm nanoparticles, reaching 12.7 ng/mL for covalent immobilization and 9.9 ng/mL for adsorption. The average diameter of S-GNPs varied from 20.2 to 64.5 nm, which resulted in a decrease in LoD for an LFIA of troponin I from 3.4 to 1.2 ng/mL for covalent immobilization and from 2.9 to 2.0 ng/mL for adsorption. Thus, we obtained an 8-fold decrease in LoD (9.9 to 1.2 ng/mL) by using S-GNPs. This effect can be related to more effective antibody immobilization and improved S-GNP optical properties. The obtained results can improve LFIAs for various practically significant analytes.
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Affiliation(s)
- Nadezhda A. Byzova
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Moscow 119071, Russia; (N.A.B.); (A.V.Z.)
| | - Anatoly V. Zherdev
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Moscow 119071, Russia; (N.A.B.); (A.V.Z.)
| | - Boris N. Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, Saratov 410049, Russia; (A.M.B.); (N.G.K.)
- Correspondence: (B.N.K.); (B.B.D.); Tel.: +7-8452-97-0403 (B.N.K.); +7-495-954-3142 (B.B.D.)
| | - Andrey M. Burov
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, Saratov 410049, Russia; (A.M.B.); (N.G.K.)
| | - Nikolai G. Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, Saratov 410049, Russia; (A.M.B.); (N.G.K.)
- Saratov State University, Saratov 410012, Russia
| | - Boris B. Dzantiev
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Moscow 119071, Russia; (N.A.B.); (A.V.Z.)
- Correspondence: (B.N.K.); (B.B.D.); Tel.: +7-8452-97-0403 (B.N.K.); +7-495-954-3142 (B.B.D.)
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14
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Perspectives of characterization and bioconjugation of gold nanoparticles and their application in lateral flow immunosensing. Drug Deliv Transl Res 2020; 10:878-902. [DOI: 10.1007/s13346-020-00771-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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15
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Gomaa MM. Early diagnosis of experimental Trichinella spiralis infection by nano-based enzyme-linked immunosorbent assay (nano-based ELISA). Exp Parasitol 2020; 212:107867. [PMID: 32199081 DOI: 10.1016/j.exppara.2020.107867] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 12/12/2019] [Accepted: 02/23/2020] [Indexed: 01/26/2023]
Abstract
Trichinellosis is a serious foodborne zoonotic disease. It is an important threat to public health all over the world. Although anti-Trichinella IgG detection is the most widely used method for diagnosis of trichinellosis, but there is an obvious window between clinical symptoms and positive serology. Gold nanoparticles (AuNPs) can be conjugated with antibodies affording them promising applications for bio-chemical detection. Herein, AuNPs-based ELISA was evaluated for the first time in the detection of Trichinella spiralis circulating antigen (CAg) for its potential as a diagnostic tool of experimental infection. Swiss Albino mice were orally inoculated with 100 muscle larvae/mouse. Animals were sacrificed 6, 8, 10, 12, 14, 16, 22 and 28 day-post infection (dpi). Blood samples were tested for CAg by both standard ELISA and nano-based ELISA using anti-rabbit polyclonal IgG conjugated with AuNPs. CAg was only detected by nano-based ELISA 6, 8, 10 dpi and by both formats 12-28 dpi. Nano-based assay recorded a statistically significant high sensitivity (58.33%, 91.67%) and accuracy (72.22%, 94.44%) 8 and 10 dpi, respectively in comparison to standard ELISA. Both assays showed high sensitivity and accuracy 12-28 dpi. Thus, nano-based ELISA could be considered as an early sensitive diagnostic method for experimental trichinellosis.
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Affiliation(s)
- Maha M Gomaa
- Department of Medical Parasitology, Faculty of Medicine, Alexandria University, Alexandria, Egypt.
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16
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Rahumatullah A, Yunus MH, Tye GJ, Noordin R. Applications of Recombinant Monoclonal Antibodies against Filarial Antigen Proteins. Am J Trop Med Hyg 2020; 102:578-581. [PMID: 31933469 DOI: 10.4269/ajtmh.19-0777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This study investigated the applications of recombinant monoclonal antibodies (rmAbs) produced against two recombinant filarial proteins of diagnostic value. Ab5B and Ab3A were produced against recombinant BmSXP, and Ab4 and Ab4-fragment crystallizable (Fc) against recombinant BmR1. Ab5B and Ab4-Fc were found to be useful as quality control (QC) reagents for two commercial rapid test kits, such as Brugia RapidTM and BLF Rapid® (Reszon Diagnostics International Sdn. Bhd., 47600 Subang Jaya, Selangor, Malaysia), respectively. The two rmAbs reacted positively with the corresponding recombinant proteins lined on the nitrocellulose strips of the cassette tests, thus may replace or reduce the need for patient serum samples as positive controls for QC of the commercial kits. They were also successfully conjugated to gold nanoparticles and reacted positively with the test lines containing the corresponding recombinant proteins when directly applied to the cassette tests. The gold-conjugated reagents can be used to confirm the antigenicity of test lines after the storage of the rapid tests for a prolonged period or under unfavorable conditions. Furthermore, Ab5B and Ab3A were shown to be able to capture the target recombinant proteins through immunoaffinity purification, enabling their use for applications that need very highly purified proteins. In conclusion, this study demonstrated several potential uses of rmAb proteins produced against recombinant filarial proteins.
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Affiliation(s)
- Anizah Rahumatullah
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - Muhammad Hafiznur Yunus
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - Gee Jun Tye
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - Rahmah Noordin
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Pulau Pinang, Malaysia
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17
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Borse V, Konwar AN. Synthesis and characterization of gold nanoparticles as a sensing tool for the lateral flow immunoassay development. SENSORS INTERNATIONAL 2020. [DOI: 10.1016/j.sintl.2020.100051] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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18
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Byzova NA, Zherdev AV, Pridvorova SM, Dzantiev BB. Development of Rapid Immunochromatographic Assay for D-dimer Detection. APPL BIOCHEM MICRO+ 2019. [DOI: 10.1134/s0003683819030062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Effect of different-sized gold nanoflowers on the detection performance of immunochromatographic assay for human chorionic gonadotropin detection. Talanta 2019; 194:604-610. [DOI: 10.1016/j.talanta.2018.10.080] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/18/2018] [Accepted: 10/25/2018] [Indexed: 12/27/2022]
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20
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Khanbabaie S, Riazi M, Chang CH, Yunus MH, Noordin R. Lateral flow dipstick antigen assay for human cystic echinococcosis. Acta Trop 2019; 190:171-176. [PMID: 30458123 DOI: 10.1016/j.actatropica.2018.11.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 10/06/2018] [Accepted: 11/16/2018] [Indexed: 12/15/2022]
Abstract
Cystic echinococcosis (CE) is a neglected zoonotic disease with a worldwide distribution and is a major public health problem in some areas. Diagnosis of CE is mainly based on clinical symptoms, imaging and serological testing, however, improvement in serodiagnosis is still needed. This study was aimed at detecting circulating Echinococcus antigen in CE patients using a lateral flow dipstick (LFD) assay. Three types of hydatid antigens i.e. hydatid cyst fluid (HCF), native antigen B (nAgB) and recombinant antigen B (rAgB) were prepared and polyclonal rabbit antiserum was raised against each antigen. Purified IgG fractions were prepared and a portion was conjugated to gold nanoparticles. After a series of optimizations, a final antigen detection LFD assay was developed using a combination of anti-nAgB-IgG and gold-conjugated anti-HCF-IgG. Evaluation of the assay showed that 27 out of 35 (77%) serum samples from CE patients gave positive results. Meanwhile, the test showed a diagnostic specificity of 82% when tested with sera from 38 healthy individuals and 13 patients with other parasitic diseases. In conclusion, the antigen detection LFD assay seemed to be useful for diagnosis of CE and possibly for post-treatment follow-up, and merit further evaluation studies. We foresee that it may improve serodiagnosis of CE when used in tandem with an antibody detection test.
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Affiliation(s)
- Sam Khanbabaie
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Penang, Malaysia.
| | - Mehdi Riazi
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, Penang, Malaysia.
| | - Chiat Han Chang
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Penang, Malaysia.
| | - Muhammad Hafiznur Yunus
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Penang, Malaysia.
| | - Rahmah Noordin
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Penang, Malaysia.
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21
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Yahaya M, Zakaria N, Noordin R, Razak K. The Effect of Nitrocellulose Membrane Pore Size of Lateral Flow Immunoassay on Sensitivity for Detection of Shigella sp. in Milk Sample. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.matpr.2019.06.384] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Byzova NA, Vinogradova SV, Porotikova EV, Terekhova UD, Zherdev AV, Dzantiev BB. Lateral Flow Immunoassay for Rapid Detection of Grapevine Leafroll-Associated Virus. BIOSENSORS 2018; 8:E111. [PMID: 30445781 PMCID: PMC6315891 DOI: 10.3390/bios8040111] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 11/10/2018] [Accepted: 11/13/2018] [Indexed: 12/21/2022]
Abstract
Grapevine leafroll-associated virus 3 (GLRaV-3) is one of the main pathogens of grapes, causing a significant loss in yield and decrease in quality for this agricultural plant. For efficient widespread control of this infection, rapid and simple analytical techniques of on-site testing are requested as a complementary addition for the currently applied hybridization (PCR) and immunoenzyme (ELISA) approaches. The given paper presents development and approbation of the immunochromatographic assay (ICA) for rapid detection of GLRaV-3. The ICA realizes a sandwich immunoassay format with the obtaining complexes ((antibody immobilized on immunochromatographic membrane)⁻(virus in the sample)⁻(antibody immobilized on gold nanoparticles (GNP)) during sample flow along the membrane compounds of the test strip. Three preparations of GNPs were compared for detection of GLRaV-3 at different dilutions of virus-containing sample. The GNPs with maximal average diameters of 51.0 ± 7.9 nm provide GLRaV-3 detection for its maximal dilutions, being 4 times more than when using GNPs with a diameter of 28.3 ± 3.3 nm, and 8 times more than when using GNPs with a diameter of 18.5 ± 3.3 nm. Test strips have been manufactured using the largest GNPs conjugated with anti-GLRaV-3 antibodies at a ratio of 1070:1. When testing samples containing other grape wine viruses, the test strips have not demonstrated staining in the test zone, which confirms the ICA specificity. The approbation of the manufactured test strips indicated that when using ELISA as a reference method, the developed ICA is characterized by a sensitivity of 100% and a specificity of 92%. If PCR is considered as a reference method, then the sensitivity of ICA is 93% and the specificity is 92%. The proposed ICA can be implemented in one stage without the use of any additional reactants or devices. The testing results can be obtained in 10 min and detected visually. It provides significant improvement in GLRaV-3 detection, and the presented approach can be transferred for the development of test systems for other grape wine pathogens.
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Affiliation(s)
- Nadezhda A Byzova
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, Moscow 119071, Russia.
| | - Svetlana V Vinogradova
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, Moscow 119071, Russia.
| | - Elena V Porotikova
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, Moscow 119071, Russia.
| | - Uliana D Terekhova
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, Moscow 119071, Russia.
| | - Anatoly V Zherdev
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, Moscow 119071, Russia.
| | - Boris B Dzantiev
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, Moscow 119071, Russia.
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23
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Mohamad A, Teo H, Keasberry NA, Ahmed MU. Recent developments in colorimetric immunoassays using nanozymes and plasmonic nanoparticles. Crit Rev Biotechnol 2018; 39:50-66. [DOI: 10.1080/07388551.2018.1496063] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Azureen Mohamad
- Biosensors and Biotechnology Laboratory, Integrated Science Building, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, Brunei
| | - Huisian Teo
- Biosensors and Biotechnology Laboratory, Integrated Science Building, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, Brunei
| | - Natasha Ann Keasberry
- Biosensors and Biotechnology Laboratory, Integrated Science Building, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, Brunei
| | - Minhaz Uddin Ahmed
- Biosensors and Biotechnology Laboratory, Integrated Science Building, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, Brunei
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24
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Vola A, Tamarozzi F, Noordin R, Yunus MH, Khanbabaie S, De Silvestri A, Brunetti E, Mariconti M. Preliminary assessment of the diagnostic performances of a new rapid diagnostic test for the serodiagnosis of human cystic echinococcosis. Diagn Microbiol Infect Dis 2018; 92:31-33. [PMID: 29776711 DOI: 10.1016/j.diagmicrobio.2018.04.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 03/29/2018] [Accepted: 04/10/2018] [Indexed: 11/29/2022]
Abstract
Rapid diagnostic tests for cystic echinococcosis (CE) are convenient to support ultrasound diagnosis in uncertain cases, especially in resource-limited settings. We found comparable diagnostic performances of the experimental Hyd Rapid Test and the commercial VIRapid HYDATIDOSIS Test, used in our diagnostic laboratory, using samples from well-characterized hepatic CE cases.
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Affiliation(s)
- Ambra Vola
- Division of Infectious Tropical Diseases, IRCCS San Matteo Hospital Foundation, 27100 Pavia, Italy
| | - Francesca Tamarozzi
- Center for Tropical Diseases, Sacro Cuore-Don Calabria Hospital, 37024 Negrar, Verona, Italy
| | - Rahmah Noordin
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Muhammad Hafiznur Yunus
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Sam Khanbabaie
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Annalisa De Silvestri
- SC Biometria e Statistica, Fondazione, IRCCS San Matteo Hospital Foundation, 27100 Pavia, Italy
| | - Enrico Brunetti
- Division of Infectious Tropical Diseases, IRCCS San Matteo Hospital Foundation, 27100 Pavia, Italy; Department of Clinical, Surgical, Diagnostic and Paediatric Science, University of Pavia, 27100 Pavia, Italy
| | - Mara Mariconti
- Department of Clinical, Surgical, Diagnostic and Paediatric Science, University of Pavia, 27100 Pavia, Italy.
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25
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Yunus MH, Tan Farrizam SN, Abdul Karim IZ, Noordin R. A Lateral Flow Rapid Test for Human Toxocariasis Developed Using Three Toxocara canis Recombinant Antigens. Am J Trop Med Hyg 2018; 98:32-38. [PMID: 29141740 PMCID: PMC5928741 DOI: 10.4269/ajtmh.17-0632] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 09/26/2017] [Indexed: 11/07/2022] Open
Abstract
Laboratory diagnosis of toxocariasis is still a challenge especially in developing endemic countries with polyparasitism. In this study, three Toxocara canis recombinant antigens, rTES-26, rTES-30, and rTES-120, were expressed and used to prepare lateral flow immunoglobulin G4 (IgG4) dipsticks. The concordance of the results of the rapid test (comprising three dipsticks) with a commercial IgG-enzyme-linked immunosorbent assay (ELISA) (Cypress Diagnostics, Belgium) was compared against the concordance of two other commercial IgG-ELISA kits (Bordier, Switzerland and NovaTec, Germany) with the Cypress kit. Using Toxocara-positive samples, the concordance of the dipstick dotted with rTES-26, rTES-30, and rTES-120 was 41.4% (12/29), 51.7% (15/29), and 72.4% (21/29), respectively. When positivity with any dipstick was considered as an overall positive rapid test result, the concordance with the Cypress kit was 93% (27/29). Meanwhile, when compared with the results of the Cypress kit, the concordance of IgG-ELISA from NovaTec and Bordier was 100% (29/29) and 89.7% (26/29), respectively. Specific IgG4 has been recognized as a marker of active infection for several helminthic diseases; therefore, the two non-concordant results of the rapid test when compared with the NovaTec IgG-ELISA kit may be from samples of people with non-active infection. All the three dipsticks showed 100% (50/50) concordance with the Cypress kit when tested with serum from individuals who were healthy and with other infections. In conclusion, the lateral flow rapid test is potentially a good, fast, and easy test for toxocariasis. Next, further validation studies and development of a test with the three antigens in one dipstick will be performed.
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Affiliation(s)
- Muhammad Hafiznur Yunus
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Penang, Malaysia
| | | | | | - Rahmah Noordin
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Penang, Malaysia
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26
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Saidin S, Yunus MH, Othman N, Lim YAL, Mohamed Z, Zakaria NZ, Noordin R. Development and initial evaluation of a lateral flow dipstick test for antigen detection of Entamoeba histolytica in stool sample. Pathog Glob Health 2017; 111:128-136. [PMID: 28335696 DOI: 10.1080/20477724.2017.1300421] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Entamoeba histolytica infection remains a public health concern in developing countries. Early diagnosis of amoebiasis can avoid disease complications, thus this study was aimed at developing a test that can rapidly detect the parasite antigens in stool samples. Rabbits were individually immunized with recombinant pyruvate phosphate dikinase (rPPDK) and E. histolytica excretory-secretory antigens to produce polyclonal antibodies. A rapid dipstick test was produced using anti-rPPDK PAb lined on the dipstick as capture reagent and anti-EhESA PAb conjugated to colloidal gold as the detector reagent. Using E. histolytica-spiked in stool sample of a healthy individual, the detection limit of the dipstick test was found to be 1000 cells ml-1. Meanwhile when rPPDK was spiked in the stool sample, the minimum concentration detected by the dipstick test was 0.1 μg ml-1. The performances of the dipstick, commercial Techlab E. histolytica II enzyme-linked immunosorbent assays (ELISA) and real-time PCR were compared using 70 stool samples from patients infected with Entamoeba species (n = 45) and other intestinal pathogens (n = 25). When compared to real-time PCR, the diagnostic sensitivity of the dipstick for detection of E. histolytica was 65.4% (n = 17/26); while the diagnostic specificity when tested with stool samples containing other intestinal pathogens was 92% (23/25). In contrast, Techlab E. histolytica II ELISA detected 19.2% (5/26) of the E. histolytica-positive samples as compared to real-time PCR. The lateral flow dipstick test produced in this study enabled rapid detection of E. histolytica, thus it showed good potential to be further developed into a diagnostic tool for intestinal amoebiasis.
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Affiliation(s)
- Syazwan Saidin
- a Institute for Research in Molecular Medicine , Universiti Sains Malaysia , Penang , Malaysia
| | - Muhammad Hafiznur Yunus
- a Institute for Research in Molecular Medicine , Universiti Sains Malaysia , Penang , Malaysia
| | - Nurulhasanah Othman
- a Institute for Research in Molecular Medicine , Universiti Sains Malaysia , Penang , Malaysia
| | - Yvonne Ai-Lian Lim
- b Faculty of Medicine, Department of Parasitology , University of Malaya , Kuala Lumpur , Malaysia
| | - Zeehaida Mohamed
- c Department of Medical Microbiology and Parasitology, School of Medical Sciences , Universiti Sains Malaysia , Kubang Kerian , Malaysia
| | - Nik Zairi Zakaria
- c Department of Medical Microbiology and Parasitology, School of Medical Sciences , Universiti Sains Malaysia , Kubang Kerian , Malaysia
| | - Rahmah Noordin
- a Institute for Research in Molecular Medicine , Universiti Sains Malaysia , Penang , Malaysia
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27
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Toubanaki DK, Karagouni E. Oligonucleotide-Conjugated Gold Nanoparticles for Application on Lateral Flow Biosensors: Evaluation and Optimization of Low pH and Salt-Aging Conjugation Methods. ANAL LETT 2016. [DOI: 10.1080/00032719.2016.1161046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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28
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Kumar D, Mutreja I, Sykes P. Seed mediated synthesis of highly mono-dispersed gold nanoparticles in the presence of hydroquinone. NANOTECHNOLOGY 2016; 27:355601. [PMID: 27454145 DOI: 10.1088/0957-4484/27/35/355601] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Gold nanoparticles (AuNPs) are being studied for several biomedical applications, including drug delivery, biomedical imaging, contrast agents and tumor targeting. The synthesis of nanoparticles with a narrow size distribution is critical for these applications. We report the synthesis of highly mono-dispersed AuNPs by a seed mediated approach, in the presence of tri-sodium citrate and hydroquinone (HQ). AuNPs with an average size of 18 nm were used for the synthesis of highly mono-dispersed nanocrystals of an average size 40 nm, 60 nm, 80 nm and ∼100 nm; but the protocol is not limited to these sizes. The colloidal gold was subjected to UV-vis absorbance spectroscopy, showing a red shift in lambda max wavelength, peaks at 518.47 nm, 526.37 nm, 535.73 nm, 546.03 nm and 556.50 nm for AuNPs seed (18 nm), 40 nm, 60 nm, 80 nm and ∼100 nm respectively. The analysis was consistent with dynamic light scattering and electron microscopy. Hydrodynamic diameters measured were 17.6 nm, 40.8 nm, 59.8 nm, 74.1 nm, and 91.4 nm (size by dynamic light scattering-volume %); with an average poly dispersity index value of 0.088, suggesting mono-dispersity in the size distribution, which was also confirmed by transmission electron microscopy analysis. The advantage of a seed mediated approach is a multi-step growth of nanoparticle size that enables us to control the number of nanoparticles in the suspension, for size ranging from 24.5 nm to 95.8 nm. In addition, the HQ-based synthesis of colloidal nanocrystals allowed control of the particle size and size distribution by tailoring either the number of seeds, amount of gold precursor or reducing agent (HQ) in the final reaction mixture.
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Affiliation(s)
- Dhiraj Kumar
- Department of Obstetrics and Gynaecology, University of Otago, Christchurch School of Medicine, 8140, New Zealand
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29
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Rapid pathogen detection by lateral-flow immunochromatographic assay with gold nanoparticle-assisted enzyme signal amplification. Int J Food Microbiol 2015; 206:60-6. [PMID: 25955290 DOI: 10.1016/j.ijfoodmicro.2015.04.032] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 04/13/2015] [Accepted: 04/19/2015] [Indexed: 11/22/2022]
Abstract
To date most LF-ICA format for pathogen detection is based on generating color signals from gold nanoparticle (AuNP) tracers that are perceivable by naked eye but often these methods exhibit sensitivity lower than those associated with the conventional enzyme-based immunological methods or mandated by the regulatory guidelines. By developing AuNP avidin-biotin constructs in which a number of enzymes can be labeled we report on an enhanced LF-ICA system to detect pathogens at very low levels. With this approach we show that as low as 100 CFU/mL of Escherichia coli O157:H7 can be detected, indicating that the limit of detection can be increased by about 1000-fold due to our signal amplification approach. In addition, extensive cross-reactivity experiments were conducted (19 different organisms were used) to test and successfully validate the specificity of the assay. Semi-quantitative analysis can be performed using signal intensities which were correlated with the target pathogen concentrations for calibration by image processing.
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Shrinking the lymphatic filariasis map: update on diagnostic tools for mapping and transmission monitoring. Parasitology 2014; 141:1912-7. [PMID: 25225828 DOI: 10.1017/s0031182014001231] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Lymphatic filariasis (LF), which is highly endemic in 73 countries worldwide, is targeted for elimination by 2020. The strategy for achieving this goal is based on 4 sequential programmatic steps: mapping, Mass drug administration (MDA) implementation, post-MDA surveillance and verification of LF elimination. All 4 stages of the implementation process are dependent on the availability of user friendly and highly sensitive rapid diagnostic tools. By the end of 2012, 59 countries had completed mapping for LF and Eritrea was the only country yet to start the process. Rolling out new diagnostic tools to facilitate the mapping process will enable an accelerated shrinking of the LF map to zero endemic countries by 2020. When the Global Programme to Eliminate Lymphatic Filariasis was launched in 2000, diagnostic tools for LF were limited to clinical examination, detection of microfilaria (MF) by microscopy in night blood samples and detection of antibodies to native-antigen preparations. There has been a significant improvement in the traditional LF diagnostic methods in recent years and some new tools are now available. This paper provides an update on the human diagnostic tests available for LF and their current applications as tools in mapping and transmission monitoring. The values of entomological indicators and parasite detection and speciation methods applied to vector populations are also discussed.
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Khalilpour A, Sadjjadi SM, Moghadam ZK, Yunus MH, Zakaria ND, Osman S, Noordin R. Lateral flow test using Echinococcus granulosus native antigen B and comparison of IgG and IgG4 dipsticks for detection of human cystic echinococcosis. Am J Trop Med Hyg 2014; 91:994-9. [PMID: 25200268 DOI: 10.4269/ajtmh.14-0170] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Cystic echinococcosis (CE) caused by infection with Echinococcus granulosus is of major concern for humans in many parts of the world. Antigen B was prepared from E. granulosus hydatid fluid, and Western blots confirmed eight batches showing a band corresponding to the 8-/12-kDa subunit with positive serum and no low-molecular mass band (< 15 kDa) with negative serum. The batches were pooled and used to prepare lateral flow immunoglobulin G4 (IgG4) and IgG dipsticks. Diagnostic sensitivity was determined using serum samples from 21 hydatidosis patients, and diagnostic specificity was established using sera from 17 individuals infected with other parasites and 15 healthy people. IgG4 dipstick had a diagnostic sensitivity of 95% (20 of 21) and a specificity of 100% (32 of 32). The IgG dipstick had a sensitivity of 100% (21 of 21) and a specificity of 87.5% (28 of 32). Thus, both IgG and IgG4 dipsticks had high sensitivities, but IgG4 had greater specificity for the diagnosis of human CE.
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Affiliation(s)
- Akbar Khalilpour
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang, Malaysia; Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyed Mahmoud Sadjjadi
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang, Malaysia; Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zohreh Kazemi Moghadam
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang, Malaysia; Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Muhammad Hafiznur Yunus
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang, Malaysia; Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Nor Dyana Zakaria
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang, Malaysia; Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sabariah Osman
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang, Malaysia; Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Rahmah Noordin
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang, Malaysia; Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
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Saidin S, Yunus MH, Zakaria ND, Razak KA, Huat LB, Othman N, Noordin R. Production of recombinant Entamoeba histolytica pyruvate phosphate dikinase and its application in a lateral flow dipstick test for amoebic liver abscess. BMC Infect Dis 2014; 14:182. [PMID: 24708664 PMCID: PMC3986461 DOI: 10.1186/1471-2334-14-182] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 03/21/2014] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Amoebic liver abscess (ALA) is the most common clinical manifestation of extraintestinal amoebiasis especially in developing countries, causing up to 100 000 fatal cases annually. Accurate and early diagnosis is important to prevent the disease complications, however its diagnosis still poses many challenges due to the limitations of the available detection tools. Pyruvate phosphate dikinase (PPDK), an excretory-secretory protein of E. histolytica, has been reported as a potential diagnostic marker for ALA, hence it may be exploited in the development of a new test for ALA. METHODS Recombinant PPDK (rPPDK) was expressed, purified and evaluated by Western blot. In parallel, recombinant galactose-and-N-acetyl-D-galactosamine inhibitable lectin (Gal/GalNAc lectin) was produced and tested similarly. The protein identity was confirmed by analysis using MALDI-TOF/TOF. A lateral flow dipstick (LFD) test using rPPDK was subsequently developed (rPPDK-LFD) and evaluated for serodiagnosis of ALA. RESULTS rPPDK was expressed as soluble protein after 4 hours of induction with 1 mM isopropyl β-D-1-thiogalactopyranoside (IPTG) at 30°C. Purification using nickel-nitrilotriacetic acid (Ni-NTA) resin yielded 1.5 mg of rPPDK from 1 L of culture with estimated molecular mass of 98 kDa on SDS-PAGE. Western blots using sera from patients with ALA, healthy individuals and other diseases probed with anti-human IgG4-HRP showed the highest sensitivity (93.3%) and specificity (100%); as compared to blots using IgG and IgG1 as secondary antibodies. Moreover, rPPDK showed better specificity when compared to rGal/GalNAc lectin. In the development of the LFD test, the optimum amount of rPPDK was 0.625 μg per dipstick and the optimum working concentration of colloidal gold conjugated anti-human IgG4 was optical density (OD) 5 (1.7 μg of anti-human IgG4). Evaluation of rPPDK-LFD using ALA patients and controls serum samples showed 87% diagnostic sensitivity and 100% specificity. CONCLUSION The developed rPPDK-LFD showed good potential for rapid diagnosis of ALA, and merit further multicentre validation using larger number of serum samples.
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Affiliation(s)
- Syazwan Saidin
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Muhammad Hafiznur Yunus
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Nor Dyana Zakaria
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Khairunisak Abdul Razak
- School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia
- NanoBiotechnology Research and Innovation (NanoBRI) Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Lim Boon Huat
- School of Health Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan 16150, Malaysia
| | - Nurulhasanah Othman
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Rahmah Noordin
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Penang 11800, Malaysia
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Gold nanoparticles deposited on linker-free silicon substrate and embedded in aluminum Schottky contact. J Colloid Interface Sci 2013; 408:220-8. [DOI: 10.1016/j.jcis.2013.07.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2013] [Revised: 07/10/2013] [Accepted: 07/11/2013] [Indexed: 11/23/2022]
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