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Pittman TW, Zhang X, Punyadeera C, Henry CS. Electrochemical Immunosensor for the Quantification of Galectin-3 in Saliva. SENSORS AND ACTUATORS. B, CHEMICAL 2024; 400:134811. [PMID: 38046365 PMCID: PMC10688601 DOI: 10.1016/j.snb.2023.134811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Heart failure (HF) is an emerging epidemic and remains a major clinical and public health problem. Advances in the healthcare management of HF may lead to lower morbidity and mortality rates but require diagnostics to guide the process. Current diagnostics/prognostics approaches rely on expensive equipment, centralized facilities and trained personnel, marginalizing healthcare access in developing countries and rural communities. These issues have led researchers to focus on developing portable and affordable diagnostics that can be deployed at the point-of-care (POC). Typically, HF biomarkers are measured in blood not saliva. Recently, our team correlated concentrations of salivary Galectin-3 (Gal-3) to outcomes in patients with HF. We have developed an analytical device which consists of an immunoassay based on a screen-printed carbon electrode (SPCE) to quantify Gal-3 levels in saliva samples. Using 10 μL of saliva, the proposed electrochemical immunoassay achieved a concentration dependent signal response in the clinically relevant range with a limit of detection of 9.66 ng/mL. In addition, the storage stability of the modified electrode was investigated, and only a 10.9% loss in current response over a 35-day period. The results of the immunoassay on the modified SPCEs suggest validity as a POC biosensor system for the management of HF.
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Affiliation(s)
- Trey W. Pittman
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA
| | - Xi Zhang
- Griffith Institute for Drug Discover, Griffith University, Nathan, Australia
| | - Chamindie Punyadeera
- Griffith Institute for Drug Discover, Griffith University, Nathan, Australia
- Menzies Health Institute, Griffith University, Gold Coast, Australia
- Translational Research Institute, Woolloongabba, Australia
| | - Charles S. Henry
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA
- Metallurgy and Materials Science Research Institute, Chulalongkorn University, Soi Chula 12, Phayathai Rd., Pathumwan, Bangkok 10330, Thailand
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Lim HJ, Lee JY, Baek YH, Park MY, Youm DJ, Kim I, Kim MJ, Choi J, Sohn YH, Park JE, Yang YJ. Evaluation of Multiplex Rapid Antigen Tests for the Simultaneous Detection of SARS-CoV-2 and Influenza A/B Viruses. Biomedicines 2023; 11:3267. [PMID: 38137488 PMCID: PMC10741453 DOI: 10.3390/biomedicines11123267] [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: 11/13/2023] [Revised: 12/05/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023] Open
Abstract
Single-target rapid antigen tests (RATs) are commonly used to detect highly transmissible respiratory viruses (RVs), such as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and influenza viruses. The simultaneous detection of RVs presenting overlapping symptoms is vital in making appropriate decisions about treatment, isolation, and resource utilization; however, few studies have evaluated multiplex RATs for SARS-CoV-2 and other RVs. We assessed the diagnostic performance of multiplex RATs targeting both the SARS-CoV-2 and influenza A/B viruses with the GenBody Influenza/COVID-19 Ag Triple, InstaView COVID-19/Flu Ag Combo (InstaView), STANDARDTM Q COVID-19 Ag Test, and STANDARDTM Q Influenza A/B Test kits using 974 nasopharyngeal swab samples. The cycle threshold values obtained from the real-time reverse transcription polymerase chain reaction results showed higher sensitivity (72.7-100%) when the values were below, rather than above, the cut-off values. The InstaView kit exhibited significantly higher positivity rates (80.21% for SARS-CoV-2, 61.75% for influenza A, and 46.15% for influenza B) and cut-off values (25.57 for SARS-CoV-2, 21.19 for influenza A, and 22.35 for influenza B) than the other two kits, and was able to detect SARS-CoV-2 Omicron subvariants. Therefore, the InstaView kit is the best choice for routine screening for both SARS-CoV-2 and influenza A/B in local communities.
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Affiliation(s)
- Ho-Jae Lim
- Department of Molecular Diagnostics, Seegene Medical Foundation, Seoul 04805, Republic of Korea; (H.-J.L.); (J.-Y.L.); (Y.-H.B.); (M.-Y.P.); (D.-J.Y.); (I.K.); (M.-J.K.); (J.C.); (Y.-H.S.)
- Department of Integrative Biological Sciences & BK21 FOUR Educational Research Group for Age-Associated Disorder Control Technology, Chosun University, Gwangju 61452, Republic of Korea
| | - Ji-Yoon Lee
- Department of Molecular Diagnostics, Seegene Medical Foundation, Seoul 04805, Republic of Korea; (H.-J.L.); (J.-Y.L.); (Y.-H.B.); (M.-Y.P.); (D.-J.Y.); (I.K.); (M.-J.K.); (J.C.); (Y.-H.S.)
| | - Young-Hyun Baek
- Department of Molecular Diagnostics, Seegene Medical Foundation, Seoul 04805, Republic of Korea; (H.-J.L.); (J.-Y.L.); (Y.-H.B.); (M.-Y.P.); (D.-J.Y.); (I.K.); (M.-J.K.); (J.C.); (Y.-H.S.)
| | - Min-Young Park
- Department of Molecular Diagnostics, Seegene Medical Foundation, Seoul 04805, Republic of Korea; (H.-J.L.); (J.-Y.L.); (Y.-H.B.); (M.-Y.P.); (D.-J.Y.); (I.K.); (M.-J.K.); (J.C.); (Y.-H.S.)
| | - Dong-Jae Youm
- Department of Molecular Diagnostics, Seegene Medical Foundation, Seoul 04805, Republic of Korea; (H.-J.L.); (J.-Y.L.); (Y.-H.B.); (M.-Y.P.); (D.-J.Y.); (I.K.); (M.-J.K.); (J.C.); (Y.-H.S.)
| | - Inhee Kim
- Department of Molecular Diagnostics, Seegene Medical Foundation, Seoul 04805, Republic of Korea; (H.-J.L.); (J.-Y.L.); (Y.-H.B.); (M.-Y.P.); (D.-J.Y.); (I.K.); (M.-J.K.); (J.C.); (Y.-H.S.)
| | - Min-Jin Kim
- Department of Molecular Diagnostics, Seegene Medical Foundation, Seoul 04805, Republic of Korea; (H.-J.L.); (J.-Y.L.); (Y.-H.B.); (M.-Y.P.); (D.-J.Y.); (I.K.); (M.-J.K.); (J.C.); (Y.-H.S.)
| | - Jongmun Choi
- Department of Molecular Diagnostics, Seegene Medical Foundation, Seoul 04805, Republic of Korea; (H.-J.L.); (J.-Y.L.); (Y.-H.B.); (M.-Y.P.); (D.-J.Y.); (I.K.); (M.-J.K.); (J.C.); (Y.-H.S.)
| | - Yong-Hak Sohn
- Department of Molecular Diagnostics, Seegene Medical Foundation, Seoul 04805, Republic of Korea; (H.-J.L.); (J.-Y.L.); (Y.-H.B.); (M.-Y.P.); (D.-J.Y.); (I.K.); (M.-J.K.); (J.C.); (Y.-H.S.)
| | - Jung-Eun Park
- Department of Integrative Biological Sciences & BK21 FOUR Educational Research Group for Age-Associated Disorder Control Technology, Chosun University, Gwangju 61452, Republic of Korea
| | - Yong-Jin Yang
- Department of Molecular Diagnostics, Seegene Medical Foundation, Seoul 04805, Republic of Korea; (H.-J.L.); (J.-Y.L.); (Y.-H.B.); (M.-Y.P.); (D.-J.Y.); (I.K.); (M.-J.K.); (J.C.); (Y.-H.S.)
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3
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Fu X, Wang Q, Ma B, Zhang B, Sun K, Yu X, Ye Z, Zhang M. Advances in Detection Techniques for the H5N1 Avian Influenza Virus. Int J Mol Sci 2023; 24:17157. [PMID: 38138987 PMCID: PMC10743243 DOI: 10.3390/ijms242417157] [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: 10/30/2023] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 12/24/2023] Open
Abstract
Avian influenza is caused by avian influenza virus infection; the H5N1 avian influenza virus is a highly pathogenic subtype, affecting poultry and human health. Since the discovery of the highly pathogenic subtype of the H5N1 avian influenza virus, it has caused enormous losses to the poultry farming industry. It was recently found that the H5N1 avian influenza virus tends to spread among mammals. Therefore, early rapid detection methods are highly significant for effectively preventing the spread of H5N1. This paper discusses the detection technologies used in the detection of the H5N1 avian influenza virus, including serological detection technology, immunological detection technology, molecular biology detection technology, genetic detection technology, and biosensors. Comparisons of these detection technologies were analyzed, aiming to provide some recommendations for the detection of the H5N1 avian influenza virus.
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Affiliation(s)
| | | | | | | | | | | | | | - Mingzhou Zhang
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Science, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone, Hangzhou 310018, China; (X.F.); (Q.W.); (B.M.); (B.Z.); (K.S.); (X.Y.); (Z.Y.)
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Brothers MC, Kornexl M, Guess B, Kim Y, Ott D, Martin JA, Regn D, Kim SS. Rapid and Simple Buffer Exchange Using Cation-Exchange Chromatography to Improve Point-of-Care Detection of Pharmacological Agents. BIOSENSORS 2023; 13:635. [PMID: 37366999 DOI: 10.3390/bios13060635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 05/31/2023] [Accepted: 06/05/2023] [Indexed: 06/28/2023]
Abstract
The current COVID-19 pandemic has highlighted the power, speed, and simplicity of point-of-care (POC) diagnostics. POC diagnostics are available for a wide range of targets, including both drugs of abuse as well as performance-enhancing drugs. For pharmacological monitoring, minimally invasive fluids such as urine and saliva are commonly sampled. However, false positives or negatives caused by interfering agents excreted in these matrices may confound results. For example, false positives have, in most cases, prevented the use of POC diagnostics for pharmacological agent detection; the consequence is that centralized labs are instead tasked to perform these screenings, resulting in significant delays between sampling and testing. Thus, a rapid, simple, and inexpensive methodology for sample purification is required for the POC to reach a field-deployable tool for the pharmacological human health and performance assessments. Buffer exchange is a simple, rapid approach to remove interfering agents, but has traditionally been difficult to perform on small pharmacological molecules. Therefore, in this communication, we use salbutamol, a performance-enhancing drug, as a case example to demonstrate the efficacy of ion-exchange chromatography as a technique to perform buffer exchange for charged pharmacological agents. This manuscript demonstrates the efficacy of this technique leveraging a commercial spin column to remove interfering agents found in simulant urines, such as proteins, creatinine, and urea, while retaining salbutamol. The utility and efficacy of the method was then confirmed in actual saliva samples. The eluent was then collected and run on the lateral flow assays (LFAs), improving the reported limit of detection by over 5× (new lower limit of detection of 10 ppb compared to reported 60 ppb by the manufacturer) while simultaneously removing noise due to background interfering agents.
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Affiliation(s)
- Michael C Brothers
- 711th Human Performance Wing, Wright Patterson Air Force Base, Dayton, OH 45433, USA
- UES Incorporation, Dayton, OH 45432, USA
| | - Maegan Kornexl
- 711th Human Performance Wing, Wright Patterson Air Force Base, Dayton, OH 45433, USA
- UES Incorporation, Dayton, OH 45432, USA
| | - Barlow Guess
- 711th Human Performance Wing, Wright Patterson Air Force Base, Dayton, OH 45433, USA
| | - Yuri Kim
- 711th Human Performance Wing, Wright Patterson Air Force Base, Dayton, OH 45433, USA
- UES Incorporation, Dayton, OH 45432, USA
| | - Darrin Ott
- 711th Human Performance Wing, Wright Patterson Air Force Base, Dayton, OH 45433, USA
| | - Jennifer A Martin
- Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Dayton, OH 45433, USA
| | - Dara Regn
- United States Air Force School of Aerospace Medicine, Wright Patterson Air Force Base, Dayton, OH 45433, USA
| | - Steve S Kim
- 711th Human Performance Wing, Wright Patterson Air Force Base, Dayton, OH 45433, USA
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5
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Morehouse ZP, Chance N, Ryan GL, Proctor CM, Nash RJ. A narrative review of nine commercial point of care influenza tests: an overview of methods, benefits, and drawbacks to rapid influenza diagnostic testing. J Osteopath Med 2023; 123:39-47. [PMID: 35977624 DOI: 10.1515/jom-2022-0065] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 06/15/2022] [Indexed: 12/27/2022]
Abstract
CONTEXT Rapid influenza diagnostic tests (RIDTs) are becoming increasingly accurate, available, and reliable as the first line of testing when suspecting influenza infections, although the global burden of influenza infections remains high. Rapid diagnosis of influenza infections has been shown to reduce improper or delayed treatment and to increase access to diagnostic measures in public health, primary care, and hospital-based settings. OBJECTIVES As the use of RIDTs continues to expand in all healthcare settings, there is a multitude of molecular techniques being employed by these various testing platforms. With this in mind, we compare the sensitivity, specificity, and time to diagnosis for nine highly utilized commercial RIDTs. METHODS Nine commercially available RIDTs were identified from the US Centers for Disease Control and Prevention (CDC) website, which were also referenced on PubMed by name within the title or abstract of peer-reviewed publications examining the sensitivity and specificity of each test against a minimum of three influenza A virus (IAV) strains as well as seasonal influenza B virus (IBV). Data from the peer-reviewed publications and manufacturers' websites were combined to discuss the sensitivity, specify, and time to diagnosis associated with each RIDT. RESULTS The sensitivity and specificity across the examined RIDTs were greater than 85.0% for both IAV and IBV across all platforms, with the reverse transcriptase-polymerase chain reaction (RT-PCR) assays maintaining sensitivity and specificity greater than 95.0% for all viruses tested. However, the RT-PCR platforms were the longest in time to diagnosis when compared to the other molecular methods utilized in the examined RIDTs. CONCLUSIONS Herein, we discussed the benefits and limitations of nine commercially available RIDTs and the molecular techniques upon which they are based, showing the relative accuracy and speed of each test for IAV and IBV detection as reported by the peer-reviewed literature and commercial manufacturers.
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Affiliation(s)
- Zachary P Morehouse
- Michigan State University College of Osteopathic Medicine, East Lansing, MI, USA.,Omni International, Inc, A PerkinElmer Company, Kennesaw, GA, USA.,Jeevan Biosciences, Inc, Tucker, GA, USA
| | - Nathan Chance
- Kirksville College of Osteopathic Medicine, A.T. Still University, Kirksville, MO, USA
| | | | | | - Rodney J Nash
- Omni International, Inc, A PerkinElmer Company, Kennesaw, GA, USA.,Jeevan Biosciences, Inc, Tucker, GA, USA.,Department of Biology, Georgia State University, Atlanta, GA, USA
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6
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Pittman TW, Decsi DB, Punyadeera C, Henry CS. Saliva-based microfluidic point-of-care diagnostic. Theranostics 2023; 13:1091-1108. [PMID: 36793864 PMCID: PMC9925318 DOI: 10.7150/thno.78872] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 01/11/2023] [Indexed: 02/04/2023] Open
Abstract
There has been a long-standing interest in point-of-care (POC) diagnostics as a tool to improve patient care because it can provide rapid, actionable results near the patient. Some of the successful examples of POC testing include lateral flow assays, urine dipsticks, and glucometers. Unfortunately, POC analysis is somewhat limited by the ability to manufacture simple devices to selectively measure disease specific biomarkers and the need for invasive biological sampling. Next generation POCs are being developed that make use of microfluidic devices to detect biomarkers in biological fluids in a non-invasive manner, addressing the above-mentioned limitations. Microfluidic devices are desirable because they can provide the ability to perform additional sample processing steps not available in existing commercial diagnostics. As a result, they can provide more sensitive and selective analysis. While most POC methods make use of blood or urine as a sample matrix, there has been a growing push to use saliva as a diagnostic medium. Saliva represents an ideal non-invasive biofluid for detecting biomarkers because it is readily available in large quantities and analyte levels reflect those in blood. However, using saliva in microfluidic devices for POC diagnostics is a relatively new and an emerging field. The overarching aim of this review is to provide an update on recent literature focused on the use of saliva as a biological sample matrix in microfluidic devices. We will first cover the characteristics of saliva as a sample medium and then review microfluidic devices that are developed for the analysis of salivary biomarkers.
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Affiliation(s)
- Trey W Pittman
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA
| | - Daniel Balazs Decsi
- Centre for Biomedical Technologies, School of Biomedical Sciences, Faculty of Health, QUT.,Griffith Institute for Drug Discover, Griffith University, Nathan, Australia
| | - Chamindie Punyadeera
- Griffith Institute for Drug Discover, Griffith University, Nathan, Australia.,Menzies Health Institute, Griffith University, Gold Coast, Australia.,Translational Research Institute, Woolloongabba, Australia
| | - Charles S Henry
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA.,Metallurgy and Materials Science Research Institute, Chulalongkorn University, Soi Chula 12, Phayathai Rd., Pathumwan, Bangkok 10330, Thailand
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Mittal D, Ali SA. Use of Nanomaterials for Diagnosis and Treatment: The Advancement of Next-Generation Antiviral Therapy. Microb Drug Resist 2022; 28:670-697. [PMID: 35696335 DOI: 10.1089/mdr.2021.0281] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Globally, viral illness propagation is the leading cause of morbidity and death, causing wreaking havoc on socioeconomic development and health care systems. The rise of infected individuals has outpaced the existing critical care facilities. Early and sophisticated methods are desperately required in this respect to halt the spread of the infection. Therefore, early detection of infectious agents and an early treatment approach may help minimize viral outbreaks. Conventional point-of-care diagnostic techniques such as computed tomography scan, quantitative real time polymerase chain reaction (qRT-PCR), X-ray, and immunoassay are still deemed valuable. However, the labor demanding, low sensitivity, and complex infrastructure needed for these methods preclude their use in distant areas. Nanotechnology has emerged as a potentially transformative technology due to its promise as an effective theranostic platform for diagnosing and treating viral infection, circumventing the limits of traditional techniques. Their unique physical and chemical characteristics make nanoparticles (NPs) advantageous for drug delivery platforms due to their size, encapsulation efficiency, improved bioavailability, effectiveness, immunogenicity, and antiviral response. This study discusses the recent research on nanotechnology-based treatments designed to combat new viruses.
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Affiliation(s)
- Deepti Mittal
- Nanosafety Lab, Division of Biochemistry, ICAR-NDRI, Karnal, Haryana, India
| | - Syed Azmal Ali
- Cell Biology and Proteomics Lab, Animal Biotechnology Center, ICAR-NDRI, Karnal, Haryana, India
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8
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Abdolhosseini M, Zandsalimi F, Moghaddam FS, Tavoosidana G. A review on colorimetric assays for DNA virus detection. J Virol Methods 2022; 301:114461. [PMID: 35031384 DOI: 10.1016/j.jviromet.2022.114461] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 01/05/2022] [Accepted: 01/08/2022] [Indexed: 12/22/2022]
Abstract
Early detection is one of the ways to deal with DNA virus widespread prevalence, and it is necessary to know new diagnostic methods and techniques. Colorimetric assays are one of the most advantageous methods in detecting viruses. These methods are based on color change, which can be seen either with the naked eye or with special devices. The aim of this study is to introduce and evaluate effective colorimetric methods based on amplification, nanoparticle, CRISPR/Cas, and Lateral flow in the diagnosis of DNA viruses and to discuss the effectiveness of each of the updated methods. Compared to the other methods, colorimetric assays are preferred for faster detection, high efficiency, cheaper cost, and high sensitivity and specificity. It is expected that the spread of these viruses can be prevented by identifying and developing new methods.
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Affiliation(s)
- Mansoreh Abdolhosseini
- Molecular Medicine Department, School of Advanced Medical Technologies, Tehran University of Medical Sciences, Tehran, Iran; Students' Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran
| | - Farshid Zandsalimi
- Molecular Medicine Department, School of Advanced Medical Technologies, Tehran University of Medical Sciences, Tehran, Iran
| | - Fahimeh Salasar Moghaddam
- Molecular Medicine Department, School of Advanced Medical Technologies, Tehran University of Medical Sciences, Tehran, Iran; Students' Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran
| | - Gholamreza Tavoosidana
- Molecular Medicine Department, School of Advanced Medical Technologies, Tehran University of Medical Sciences, Tehran, Iran.
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Wiriyachaiporn N, Sirikaew S, Chitchai N, Janchompoo P, Maneeprakorn W, Bamrungsap S, Pasomsub E, Japrung D. Pre-clinically evaluated visual lateral flow platform using influenza A and B nucleoprotein as a model and its potential applications. RSC Adv 2021; 11:18597-18604. [PMID: 35480952 PMCID: PMC9033468 DOI: 10.1039/d1ra01361k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 05/08/2021] [Indexed: 12/26/2022] Open
Abstract
A visual colorimetric rapid screening system based on a lateral flow device for simultaneous detection and differentiation between influenza A and B nucleoprotein as a model was developed. Monoclonal antibodies, specific for either influenza A or B nucleoproteins, were evaluated for their reactivities and were used as targeting ligands. With the best antibody pairs selected, the system exhibited good specificity to both viruses without cross reactivity to other closely related respiratory viruses. Further semi-quantitative analysis using a strip reader revealed that the system is capable of detecting influenza A and B protein content as low as 0.04 and 1 ng per test, respectively, using a sample volume as low as 100 μL, within 10 minutes (R2 = 0.9652 and 0.9718). With a performance comparison to the commercial tests, the system demonstrated a four-to-eight-fold higher sensitivity. Pre-clinical evaluation with 101 nasopharyngeal swabs reveals correlated results with a standard molecular approach, with 89% and 83% sensitivity towards influenza A and B viruses, and 100% specificity for both viruses. Visual colorimetric rapid screening system based on lateral flow device for influenza A and B virus detection as a model and its pre-clinical evaluation.![]()
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Affiliation(s)
- Natpapas Wiriyachaiporn
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA) PathumThani 12120 Thailand
| | - Siriwan Sirikaew
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA) PathumThani 12120 Thailand
| | - Nawakarn Chitchai
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA) PathumThani 12120 Thailand .,Faculty of Pharmacy, Thammasat University Thailand
| | - Pareena Janchompoo
- Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University Bangkok Thailand
| | - Weerakanya Maneeprakorn
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA) PathumThani 12120 Thailand
| | - Suwussa Bamrungsap
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA) PathumThani 12120 Thailand
| | - Ekawat Pasomsub
- Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University Bangkok Thailand
| | - Deanpen Japrung
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA) PathumThani 12120 Thailand
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10
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Eissa S, Zourob M. Development of a Low-Cost Cotton-Tipped Electrochemical Immunosensor for the Detection of SARS-CoV-2. Anal Chem 2021; 93:1826-1833. [PMID: 33370087 PMCID: PMC7784662 DOI: 10.1021/acs.analchem.0c04719] [Citation(s) in RCA: 137] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 12/15/2020] [Indexed: 12/17/2022]
Abstract
Collection of nasopharyngeal samples using swabs followed by the transfer of the virus into a solution and an RNA extraction step to perform reverse transcription polymerase chain reaction (PCR) is the primary method currently used for the diagnosis of COVID-19. However, the need for several reagents and steps and the high cost of PCR hinder its worldwide implementation to contain the outbreak. Here, we report a cotton-tipped electrochemical immunosensor for the detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus antigen. Unlike the reported approaches, we integrated the sample collection and detection tools into a single platform by coating screen-printed electrodes with absorbing cotton padding. The immunosensor was fabricated by immobilizing the virus nucleocapsid (N) protein on carbon nanofiber-modified screen-printed electrodes which were functionalized by diazonium electrografting. The detection of the virus antigen was achieved via swabbing followed by competitive assay using a fixed amount of N protein antibody in the solution. A square wave voltammetric technique was used for the detection. The limit of detection for our electrochemical biosensor was 0.8 pg/mL for SARS-CoV-2, indicating very good sensitivity for the sensor. The biosensor did not show significant cross-reactivity with other virus antigens such as influenza A and HCoV, indicating high selectivity of the method. Moreover, the biosensor was successfully applied for the detection of the virus antigen in spiked nasal samples showing excellent recovery percentages. Thus, our electrochemical immunosensor is a promising diagnostic tool for the direct rapid detection of the COVID-19 virus that requires no sample transfer or pretreatment.
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Affiliation(s)
- Shimaa Eissa
- Department of Chemistry, Alfaisal
University, Al Zahrawi Street, Al Maather, Al Takhassusi Road, Riyadh
11533, Saudi Arabia
| | - Mohammed Zourob
- Department of Chemistry, Alfaisal
University, Al Zahrawi Street, Al Maather, Al Takhassusi Road, Riyadh
11533, Saudi Arabia
- King Faisal Specialist Hospital and
Research Centre, Zahrawi Street, Al Maather, Riyadh 12713, Saudi
Arabia
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