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Blickenstorfer Y, Jirasko V, Tanno A, Dräger S, Hoven D, Löhle J, Leuch S, Mamedava Y, Müller SL, Leuzinger K, Osthoff M, Vörös J. Iodide based electrochemical gold quantification method for lateral flow assays. Biosens Bioelectron 2024; 262:116524. [PMID: 38971036 DOI: 10.1016/j.bios.2024.116524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 06/05/2024] [Accepted: 06/23/2024] [Indexed: 07/08/2024]
Abstract
The lateral flow assay (LFA) is an ideal technology for at-home medical diagnostic tests due to its ease of use, cost-effectiveness, and rapid results. Despite these advantages, only few LFAs, such as the pregnancy and COVID-19 tests, have been translated from the laboratory to the homes of patients. To date, the medical applicability of LFAs is limited by the fact that they only provide yes/no answers unless combined with optical readers that are too expensive for at-home applications. Furthermore, LFAs are unable to compete with the state-of-the-art technologies in centralized laboratories in terms of detection limits. To address those shortcomings, we have developed an electrochemical readout procedure to enable quantitative and sensitive LFAs. This technique is based on a voltage-triggered in-situ dissolution of gold nanoparticles, the conventional label used to visualize target-specific signals on the test line in LFAs. Following the dissolution, the amount of gold is measured by electroplating onto an electrode and subsequent electrochemical quantification of the deposited gold. The measured current has a low noise, which achieves superior detection limits compared to optical techniques where background light scattering is limiting the readout performance. In addition, the hardware for the readout was developed to demonstrate translatability towards low-cost electronics.
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Affiliation(s)
- Yves Blickenstorfer
- Laboratory of Biosensors and Bioelectronics, Institute of Biomedical Engineering, ETH Zurich, Zurich, Switzerland; Hemetron Ag, Thalwil, Switzerland
| | - Vlastimil Jirasko
- Laboratory of Biosensors and Bioelectronics, Institute of Biomedical Engineering, ETH Zurich, Zurich, Switzerland; Hemetron Ag, Thalwil, Switzerland
| | - Alexander Tanno
- Laboratory of Biosensors and Bioelectronics, Institute of Biomedical Engineering, ETH Zurich, Zurich, Switzerland; Hemetron Ag, Thalwil, Switzerland
| | - Sarah Dräger
- Division of Internal Medicine, University Hospital Basel, Basel, Switzerland; Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Darius Hoven
- Laboratory of Biosensors and Bioelectronics, Institute of Biomedical Engineering, ETH Zurich, Zurich, Switzerland
| | - Josephine Löhle
- Laboratory of Biosensors and Bioelectronics, Institute of Biomedical Engineering, ETH Zurich, Zurich, Switzerland; Hemetron Ag, Thalwil, Switzerland
| | - Stephan Leuch
- Laboratory of Biosensors and Bioelectronics, Institute of Biomedical Engineering, ETH Zurich, Zurich, Switzerland
| | | | - Sereina Livia Müller
- Division of Internal Medicine, University Hospital Basel, Basel, Switzerland; Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Karoline Leuzinger
- Clinical Virology, Laboratory Medicine, University Hospital Basel, Basel, Switzerland
| | - Michael Osthoff
- Division of Internal Medicine, University Hospital Basel, Basel, Switzerland; Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | - János Vörös
- Laboratory of Biosensors and Bioelectronics, Institute of Biomedical Engineering, ETH Zurich, Zurich, Switzerland.
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2
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Peng B, Wang Y, Xie Y, Dong X, Liu W, Li D, Chen H. An overview of influenza A virus detection methods: from state-of-the-art of laboratories to point-of-care strategies. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:4496-4515. [PMID: 38946516 DOI: 10.1039/d4ay00508b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Influenza A virus (IAV), a common respiratory infectious pathogen, poses a significant risk to personal health and public health safety due to rapid mutation and wide host range. To better prevent and treat IAV, comprehensive measures are needed for early and rapid screening and detection of IAV. Although traditional laboratory-based techniques are accurate, they are often time-consuming and not always feasible in emergency or resource-limited areas. In contrast, emerging point-of-care strategies provide faster results but may compromise sensitivity and specificity. Here, this review critically evaluates various detection methods for IAV from established laboratory-based procedures to innovative rapid diagnosis. By analyzing the recent research progress, we aim to address significant gaps in understanding the effectiveness, practicality, and applicability of these methods in different scenarios, which could provide information for healthcare strategies, guide public health response measures, and ultimately strengthen patient care in the face of the ongoing threat of IAV. Through a detailed comparison of diagnostic models, this review can provide a reliable reference for rapid, accurate and efficient detection of IAV, and to contribute to the diagnosis, treatment, prevention, and control of IAV.
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Affiliation(s)
- Bin Peng
- Guangzhou Huashang Vocational College, Guangzhou, 510000, China
| | - Yaqi Wang
- Guangzhou Institute for Food Inspection, Guangzhou, 510000, China
| | - Yueliang Xie
- Guangdong Agriculture Industry Business Polytechnic College, Guangzhou, 510000, China
| | - Xiangyan Dong
- State Key Laboratory of Chemical Oncogenomics, Institute of Biomedical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China.
| | - Wen Liu
- Guangdong Agriculture Industry Business Polytechnic College, Guangzhou, 510000, China
| | - Dan Li
- College of Pharmacy, Jinzhou Medical University, Jinzhou, 121000, China
| | - Hui Chen
- State Key Laboratory of Chemical Oncogenomics, Institute of Biomedical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China.
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3
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Low ZY, Wong KH, Wen Yip AJ, Choo WS. The convergent evolution of influenza A virus: Implications, therapeutic strategies and what we need to know. CURRENT RESEARCH IN MICROBIAL SCIENCES 2023; 5:100202. [PMID: 37700857 PMCID: PMC10493511 DOI: 10.1016/j.crmicr.2023.100202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023] Open
Abstract
Influenza virus infection, more commonly known as the 'cold flu', is an etiological agent that gives rise to recurrent annual flu and many pandemics. Dated back to the 1918- Spanish Flu, the influenza infection has caused the loss of many human lives and significantly impacted the economy and daily lives. Influenza virus can be classified into four different genera: influenza A-D, with the former two, influenza A and B, relevant to humans. The capacity of antigenic drift and shift in Influenza A has given rise to many novel variants, rendering vaccines and antiviral therapies useless. In light of the emergence of a novel betacoronavirus, the SARS-CoV-2, unravelling the underpinning mechanisms that support the recurrent influenza epidemics and pandemics is essential. Given the symptom similarities between influenza and covid infection, it is crucial to reiterate what we know about the influenza infection. This review aims to describe the origin and evolution of influenza infection. Apart from that, the risk factors entail the implication of co-infections, especially regarding the COVID-19 pandemic is further discussed. In addition, antiviral strategies, including the potential of drug repositioning, are discussed in this context. The diagnostic approach is also critically discussed in an effort to understand better and prepare for upcoming variants and potential influenza pandemics in the future. Lastly, this review encapsulates the challenges in curbing the influenza spread and provides insights for future directions in influenza management.
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Affiliation(s)
- Zheng Yao Low
- School of Science, Monash University Malaysia, 47500 Subang Jaya, Selangor, Malaysia
| | - Ka Heng Wong
- School of Science, Monash University Malaysia, 47500 Subang Jaya, Selangor, Malaysia
| | - Ashley Jia Wen Yip
- School of Science, Monash University Malaysia, 47500 Subang Jaya, Selangor, Malaysia
| | - Wee Sim Choo
- School of Science, Monash University Malaysia, 47500 Subang Jaya, Selangor, Malaysia
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4
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Ortiz DA, Loeffelholz MJ. Practical Challenges of Point-of-Care Testing. Clin Lab Med 2023; 43:155-165. [PMID: 37169439 DOI: 10.1016/j.cll.2023.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The practical challenges of point-of-care testing (POCT) include analytical performance and quality compared with testing performed in a central laboratory and higher cost per test compared with laboratory-based tests. These challenges can be addressed with new test technology, consensus, and practice guidelines for the use of POCT, instituting a quality management system and data connectivity in the POCT setting, and studies that demonstrate evidence of clinical and economic value of POCT.
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Affiliation(s)
- Daniel A Ortiz
- Microbiology and Molecular Pathology, Department of Pathology, Oakland University William Beaumont School of Medicine, Beaumont Health, 3601 West 13 Mile Road, Royal Oak, MI 48073, USA
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5
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Jiang XW, Huang TS, Xie L, Chen SZ, Wang SD, Huang ZW, Li XY, Ling WP. Development of a diagnostic assay by three-tube multiplex real-time PCR for simultaneous detection of nine microorganisms causing acute respiratory infections. Sci Rep 2022; 12:13306. [PMID: 35922526 PMCID: PMC9427838 DOI: 10.1038/s41598-022-15543-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 06/24/2022] [Indexed: 11/17/2022] Open
Abstract
Acute respiratory infections are widespread in vulnerable populations of all ages and are characterized by a variety of symptoms. The underlying infection can be caused by a multitude of microorganisms, including viruses and bacteria. Early detection of respiratory infections through rapid pathogen screening is vital in averting infectious respiratory disease epidemics. This study utilized a multiplex real-time PCR system to develop a three-tube reverse transcription-PCR (RT-PCR) assay, enabling simultaneously detect nine respiratory pathogens, including: influenza A and B, adenovirus, respiratory syncytial virus (RSV), Streptococcus pneumoniae, Legionella pneumophila, Haemophilus influenzae, Chlamydia pneumoniae, and Mycoplasma pneumoniae. This technique utilizes a one-step assay, with specifically designed TaqMan primer-probe sets combined in the same tube. This assay provided rapid and simplified detection of the nine prevalent pathogens, as well as increased sensitivity and reduced cross-contamination. This assay was evaluated using 25 related viral/bacterial strains as positive references, the other 25 irrelevant strains as negative controls, and clinical specimens from 179 patients. All positive strains were detected with no amplification of the non-target microorganism mixtures and the assay's detection limits ranged between 250-500 copies/ml (1.25-2.5 copies/reaction). A total of 167 (93.3%) samples tested positive for at least one of the pathogens identified; 109 of these samples were from patients confirmed to have RSV infections. The diagnostic accuracy of our assay was further confirmed by matching results from classical direct immunofluorescence assay and nucleotide sequencing. These data demonstrate the innovative multiplex real-time PCR assay as a promising alternative to the current approaches used for early screening of acute respiratory infections.
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Affiliation(s)
- Xi-Wen Jiang
- Research Institute, DAAN Gene Co., Ltd., No. 19 Xiangshan Road, Guangzhou, China.
- The Medicine and Biological Engineering Technology Research Center of the Ministry of Health, Guangzhou, China.
| | - Tao-Sheng Huang
- Research Institute, DAAN Gene Co., Ltd., No. 19 Xiangshan Road, Guangzhou, China
- The Medicine and Biological Engineering Technology Research Center of the Ministry of Health, Guangzhou, China
| | - Long Xie
- Clinical and Translational Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Si-Ze Chen
- Central Laboratory, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
- The Precise Therapy Engineering Technology Research Center of Guangdong Province for Esophageal Cancer, Guangzhou, China
| | - Shi-Dong Wang
- Research Institute, DAAN Gene Co., Ltd., No. 19 Xiangshan Road, Guangzhou, China
- The Medicine and Biological Engineering Technology Research Center of the Ministry of Health, Guangzhou, China
| | - Zhi-Wen Huang
- Research Institute, DAAN Gene Co., Ltd., No. 19 Xiangshan Road, Guangzhou, China
- The Medicine and Biological Engineering Technology Research Center of the Ministry of Health, Guangzhou, China
| | - Xin-Yu Li
- Research Institute, DAAN Gene Co., Ltd., No. 19 Xiangshan Road, Guangzhou, China
- The Medicine and Biological Engineering Technology Research Center of the Ministry of Health, Guangzhou, China
| | - Wei-Ping Ling
- Research Institute, DAAN Gene Co., Ltd., No. 19 Xiangshan Road, Guangzhou, China
- The Medicine and Biological Engineering Technology Research Center of the Ministry of Health, Guangzhou, China
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6
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Havasi A, Visan S, Cainap C, Cainap SS, Mihaila AA, Pop LA. Influenza A, Influenza B, and SARS-CoV-2 Similarities and Differences – A Focus on Diagnosis. Front Microbiol 2022; 13:908525. [PMID: 35794916 PMCID: PMC9251468 DOI: 10.3389/fmicb.2022.908525] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/23/2022] [Indexed: 12/23/2022] Open
Abstract
In late December 2019, the first cases of viral pneumonia caused by an unidentified pathogen were reported in China. Two years later, SARS-CoV-2 was responsible for almost 450 million cases, claiming more than 6 million lives. The COVID-19 pandemic strained the limits of healthcare systems all across the world. Identifying viral RNA through real-time reverse transcription-polymerase chain reaction remains the gold standard in diagnosing SARS-CoV-2 infection. However, equipment cost, availability, and the need for trained personnel limited testing capacity. Through an unprecedented research effort, new diagnostic techniques such as rapid diagnostic testing, isothermal amplification techniques, and next-generation sequencing were developed, enabling accurate and accessible diagnosis. Influenza viruses are responsible for seasonal outbreaks infecting up to a quarter of the human population worldwide. Influenza and SARS-CoV-2 present with flu-like symptoms, making the differential diagnosis challenging solely on clinical presentation. Healthcare systems are likely to be faced with overlapping SARS-CoV-2 and Influenza outbreaks. This review aims to present the similarities and differences of both infections while focusing on the diagnosis. We discuss the clinical presentation of Influenza and SARS-CoV-2 and techniques available for diagnosis. Furthermore, we summarize available data regarding the multiplex diagnostic assay of both viral infections.
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Affiliation(s)
- Andrei Havasi
- Department of Oncology, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
- Department of Medical Oncology, The Oncology Institute “Prof. Dr. Ion Chiricuta”, Cluj-Napoca, Romania
| | - Simona Visan
- Department of Genetics, Genomics and Experimental Pathology, The Oncology Institute “Prof. Dr. Ion Chiricuta”, Cluj-Napoca, Romania
| | - Calin Cainap
- Department of Oncology, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
- Department of Medical Oncology, The Oncology Institute “Prof. Dr. Ion Chiricuta”, Cluj-Napoca, Romania
| | - Simona Sorana Cainap
- Pediatric Clinic No. 2, Department of Pediatric Cardiology, Emergency County Hospital for Children, Cluj-Napoca, Romania
- Department of Mother and Child, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
- *Correspondence: Simona Sorana Cainap, ;
| | - Alin Adrian Mihaila
- Faculty of Economics and Business Administration, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Laura-Ancuta Pop
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
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7
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Li G, Ma W, Mo J, Cheng B, Shoda SI, Zhou D, Ye XS. Influenza Virus Precision Diagnosis and Continuous Purification Enabled by Neuraminidase-Resistant Glycopolymer-Coated Microbeads. ACS APPLIED MATERIALS & INTERFACES 2021; 13:46260-46269. [PMID: 34547894 DOI: 10.1021/acsami.1c11561] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Rapid diagnosis and vaccine development are critical to prevent the threat posed by viruses. However, rapid tests, such as colloidal gold assays, yield false-negative results due to the low quantities of viruses; moreover, conventional virus purification, including ultracentrifugation and nanofiltration, is multistep and time-consuming, which limits laboratory research and commercial development of viral vaccines. A rapid virus enrichment and purification technique will improve clinical diagnosis sensitivity and simplify vaccine production. Hence, we developed the surface-glycosylated microbeads (glycobeads) featuring chemically synthetic glycoclusters and reversible linkers to selectively capture the influenza virus. The surface plasmon resonance (SPR) evaluation indicated broad spectrum affinity of S-linked glycosides to various influenza viruses. The magnetic glycobeads were integrated into clinical rapid diagnosis, leading to a 30-fold lower limit of detection. Additionally, the captured viruses can be released under physiological conditions, delivering purified viruses with >50% recovery and without decreasing their native infectivity. Notably, this glycobead platform will facilitate the sensitive detection and continuous one-step purification of the target virus that contributes to future vaccine production.
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Affiliation(s)
- Gefei Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Wenxiao Ma
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Juan Mo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Boyang Cheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Shin-Ichiro Shoda
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-11, Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Demin Zhou
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
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Daemi HB, Kulyar MFEA, He X, Li C, Karimpour M, Sun X, Zou Z, Jin M. Progression and Trends in Virus from Influenza A to COVID-19: An Overview of Recent Studies. Viruses 2021; 13:1145. [PMID: 34203647 PMCID: PMC8232279 DOI: 10.3390/v13061145] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/24/2021] [Accepted: 06/04/2021] [Indexed: 12/11/2022] Open
Abstract
Influenza is a highly known contagious viral infection that has been responsible for the death of many people in history with pandemics. These pandemics have been occurring every 10 to 30 years in the last century. The most recent global pandemic prior to COVID-19 was the 2009 influenza A (H1N1) pandemic. A decade ago, the H1N1 virus caused 12,500 deaths in just 19 months globally. Now, again, the world has been challenged with another pandemic. Since December 2019, the first case of a novel coronavirus (COVID-19) infection was detected in Wuhan. This infection has risen rapidly throughout the world; even the World Health Organization (WHO) announced COVID-19 as a worldwide emergency to ensure human health and public safety. This review article aims to discuss important issues relating to COVID-19, including clinical, epidemiological, and pathological features of COVID-19 and recent progress in diagnosis and treatment approaches for the COVID-19 infection. We also highlight key similarities and differences between COVID-19 and influenza A to ensure the theoretical and practical details of COVID-19.
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Affiliation(s)
- Hakimeh Baghaei Daemi
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (H.B.D.); (X.H.); (C.L.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture, Wuhan 430070, China
| | | | - Xinlin He
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (H.B.D.); (X.H.); (C.L.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture, Wuhan 430070, China
| | - Chengfei Li
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (H.B.D.); (X.H.); (C.L.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture, Wuhan 430070, China
| | - Morteza Karimpour
- Department of Biology, Azad University of Rasht, Rasht 4147654919, Iran;
| | - Xiaomei Sun
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (H.B.D.); (X.H.); (C.L.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture, Wuhan 430070, China
| | - Zhong Zou
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (H.B.D.); (X.H.); (C.L.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture, Wuhan 430070, China
| | - Meilin Jin
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (H.B.D.); (X.H.); (C.L.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture, Wuhan 430070, China
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Kim SM, Kim J, Noh S, Sohn H, Lee T. Recent Development of Aptasensor for Influenza Virus Detection. BIOCHIP JOURNAL 2020; 14:327-339. [PMID: 33224441 PMCID: PMC7670017 DOI: 10.1007/s13206-020-4401-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 09/22/2020] [Indexed: 12/27/2022]
Abstract
In nowadays, we have entered the new era of pandemics and the significance of virus detection deeply impacts human society. Viruses with genetic mutations are reported nearly every year, and people have prepared tools to detect the virus and vaccines to ensure proper treatments. Influenza virus (IV) is one of the most harmful viruses reporting various mutations, sub-types, and rapid infection speed for humans and animals including swine and poultry. Moreover, IV infection presents several harmful symptoms including cough, fever, diarrhea, chills, even causing death. To reduce the IV-induced harm, its proper and rapid detection is highly required. Conventional techniques were used against various IV sub-types including H1N1, H3N2, and H5N1. However, some of the techniques are time-consuming, expensive, or labor-intensive for detecting IV. Recently, the nucleic acid-based aptamer has gained attention as a novel bioprobe for constructing a biosensor. In this review, the authors discuss the recent progress in aptasensors for detecting IV in terms of an electrochemical and an optical biosensor.
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Affiliation(s)
- Soo Min Kim
- Department of Chemical Engineering, Kwangwoon University, 20 Kwangwoon-ro, Nowon-gu, Seoul, 01899 Republic of Korea
| | - Jinmyeong Kim
- Department of Chemical Engineering, Kwangwoon University, 20 Kwangwoon-ro, Nowon-gu, Seoul, 01899 Republic of Korea
| | - Seungwoo Noh
- Department of Chemical Engineering, Kwangwoon University, 20 Kwangwoon-ro, Nowon-gu, Seoul, 01899 Republic of Korea
| | - Hiesang Sohn
- Department of Chemical Engineering, Kwangwoon University, 20 Kwangwoon-ro, Nowon-gu, Seoul, 01899 Republic of Korea
| | - Taek Lee
- Department of Chemical Engineering, Kwangwoon University, 20 Kwangwoon-ro, Nowon-gu, Seoul, 01899 Republic of Korea
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10
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Kim HJ. Novel respiratory infectious diseases in Korea. Yeungnam Univ J Med 2020; 37:286-295. [PMID: 33045803 PMCID: PMC7606962 DOI: 10.12701/yujm.2020.00633] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/02/2020] [Accepted: 09/06/2020] [Indexed: 12/15/2022] Open
Abstract
Respiratory infections are very common and highly contagious. Respiratory infectious diseases affect not only the person infected but also the family members and the society. As medical sciences advance, several diseases have been conquered; however, the impact of novel infectious diseases on the society is enormous. As the clinical presentation of respiratory infections is similar regardless of the pathogen, the causative agent is not distinguishable by symptoms alone. Moreover, it is difficult to develop a cure because of the various viral mutations. Various respiratory infectious diseases ranging from influenza, which threaten the health of mankind globally, to the coronavirus disease 2019, which resulted in a pandemic, exist. Contrary to human expectations that development in health care and improvement in hygiene will conquer infectious diseases, humankind's health and social systems are threatened by novel infectious diseases. Owing to the development of transport and trading activity, the rate of spread of new infectious diseases is increasing. As respiratory infections can threaten the members of the global community at any time, investigations on preventing the transmission of these diseases as well as development of effective antivirals and vaccines are of utmost importance and require a worldwide effort.
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Affiliation(s)
- Hyun Jung Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Keimyung University Dongsan Hospital, Keimyung University School of Medicine, Daegu, Korea
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11
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Abstract
The timely and accurate diagnosis of respiratory virus infections has the potential to optimize downstream (posttesting) use of limited health care resources, including antibiotics, antivirals, ancillary testing, and inpatient and emergency department beds. Cost-effective algorithms for respiratory virus testing must take into consideration numerous factors, including which patients should be tested, what testing should be performed (for example, antigen testing versus reverse transcription-PCR testing or influenza A/B testing versus testing with a comprehensive respiratory virus panel), and the turnaround time necessary to achieve the desired posttesting outcomes. Despite the clinical impact of respiratory virus infections, the cost-effectiveness of respiratory virus testing is incompletely understood. In this article, we review the literature pertaining to the cost-effectiveness of respiratory virus testing in pediatric and adult patient populations, in emergency department, outpatient, and inpatient clinical settings. Furthermore, we consider the cost-effectiveness of a variety of testing methods, including rapid antigen tests, direct fluorescent antibody assays, and nucleic acid amplification tests.
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12
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Uwizeyimana JD, Kim MK, Kim D, Byun JH, Yong D. Comparison of Multiplex Real-Time Polymerase Chain Reaction Assays for Detection of Respiratory Viruses in Nasopharyngeal Specimens. ANNALS OF CLINICAL MICROBIOLOGY 2019. [DOI: 10.5145/acm.2019.22.2.35] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Jean Damascene Uwizeyimana
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
- Department of Global Health Security, Yonsei University Graduate of Public Health, Seoul, Korea
- Department of Emergency Care, Ruli Hospital, Gakenye, Rwanda
| | - Min Kyung Kim
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
| | - Daewon Kim
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
| | - Jung-Hyun Byun
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
| | - Dongeun Yong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
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Abstract
BACKGROUND Morbidity and mortality from influenza A (Flu A) have increased in recent years. Timely diagnosis and management are critical for disease control. Therefore, the development of a rapid, accurate, and portable analytical method for on-site analysis is imperative. OBJECTIVES The aim of this work was to develop a rapid, on-site, automated assay for the detection of Flu A and to evaluate the assay. METHODS A handheld instrument (TD-01) based on capillary convective polymerase chain reaction (PCR) was developed for rapid on-site detection of Flu A. Since a previous version of the instrument, an automated motion mechanism has been introduced to TD-01 to achieve RNA automated testing. The primers and probe used for Flu A detection were designed according to the Flu A gene sequence of matrix proteins. Finally, we evaluated the detection spectra, sensitivity, specificity, and diagnostic performance of the assay. RESULTS The TD-01 was able to successfully automatically detect Flu A RNA within 30 min. Results for serially diluted viruses indicated that the lower limit of detection for Flu A was 0.1 TCID50/ml (50% tissue culture infective dose). After evaluating known virus stocks, including 15 strains of Flu A, four strains of Flu B, and two strains of respiratory syncytial virus (RSV), the assay had a favorable detection spectrum and no obvious cross-reactivity. Method verification based on 554 clinical samples indicated that the sensitivity and specificity of TD-01 were 98.30% (231/235) and 98.75% (315/319), respectively. CONCLUSIONS The results indicate that Flu A detection by TD-01 is particularly suitable for on-site testing and has the potential for application in point-of-care testing.
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Arima A, Tsutsui M, Harlisa IH, Yoshida T, Tanaka M, Yokota K, Tonomura W, Taniguchi M, Okochi M, Washio T, Kawai T. Selective detections of single-viruses using solid-state nanopores. Sci Rep 2018; 8:16305. [PMID: 30390013 PMCID: PMC6214978 DOI: 10.1038/s41598-018-34665-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 10/23/2018] [Indexed: 01/31/2023] Open
Abstract
Rapid diagnosis of flu before symptom onsets can revolutionize our health through diminishing a risk for serious complication as well as preventing infectious disease outbreak. Sensor sensitivity and selectivity are key to accomplish this goal as the number of virus is quite small at the early stage of infection. Here we report on label-free electrical diagnostics of influenza based on nanopore analytics that distinguishes individual virions by their distinct physical features. We accomplish selective resistive-pulse sensing of single flu virus having negative surface charges in a physiological media by exploiting electroosmotic flow to filter contaminants at the Si3N4 pore orifice. We demonstrate identifications of allotypes with 68% accuracy at the single-virus level via pattern classifications of the ionic current signatures. We also show that this discriminability becomes >95% under a binomial distribution theorem by ensembling the pulse data of >20 virions. This simple mechanism is versatile for point-of-care tests of a wide range of flu types.
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Affiliation(s)
- Akihide Arima
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Makusu Tsutsui
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan.
| | - Ilva Hanun Harlisa
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Takeshi Yoshida
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Masayoshi Tanaka
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Kazumichi Yokota
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Wataru Tonomura
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Masateru Taniguchi
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Mina Okochi
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Takashi Washio
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan.
| | - Tomoji Kawai
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan.
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15
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Dziąbowska K, Czaczyk E, Nidzworski D. Detection Methods of Human and Animal Influenza Virus-Current Trends. BIOSENSORS-BASEL 2018; 8:bios8040094. [PMID: 30340339 PMCID: PMC6315519 DOI: 10.3390/bios8040094] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 10/03/2018] [Accepted: 10/12/2018] [Indexed: 12/11/2022]
Abstract
The basic affairs connected to the influenza virus were reviewed in the article, highlighting the newest trends in its diagnostic methods. Awareness of the threat of influenza arises from its ability to spread and cause a pandemic. The undiagnosed and untreated viral infection can have a fatal effect on humans. Thus, the early detection seems pivotal for an accurate treatment, when vaccines and other contemporary prevention methods are not faultless. Public health is being attacked with influenza containing new genes from a genetic assortment between animals and humankind. Unfortunately, the population does not have immunity for mutant genes and is attacked in every viral outbreak season. For these reasons, fast and accurate devices are in high demand. As currently used methods like Rapid Influenza Diagnostic Tests lack specificity, time and cost-savings, new methods are being developed. In the article, various novel detection methods, such as electrical and optical were compared. Different viral elements used as detection targets and analysis parameters, such as sensitivity and specificity, were presented and discussed.
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Affiliation(s)
- Karolina Dziąbowska
- Institute of Biotechnology and Molecular Medicine, 3 Trzy Lipy St., 80-172 Gdansk, Poland.
- SensDx SA, 14b Postepu St., 02-676 Warsaw, Poland.
| | - Elżbieta Czaczyk
- Institute of Biotechnology and Molecular Medicine, 3 Trzy Lipy St., 80-172 Gdansk, Poland.
- SensDx SA, 14b Postepu St., 02-676 Warsaw, Poland.
| | - Dawid Nidzworski
- Institute of Biotechnology and Molecular Medicine, 3 Trzy Lipy St., 80-172 Gdansk, Poland.
- SensDx SA, 14b Postepu St., 02-676 Warsaw, Poland.
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16
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Neumann F, Hernández-Neuta I, Grabbe M, Madaboosi N, Albert J, Nilsson M. Padlock Probe Assay for Detection and Subtyping of Seasonal Influenza. Clin Chem 2018; 64:1704-1712. [PMID: 30257827 DOI: 10.1373/clinchem.2018.292979] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 08/31/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND Influenza remains a constant threat worldwide, and WHO estimates that it affects 5% to 15% of the global population each season, with an associated 3 to 5 million severe cases and up to 500000 deaths. To limit the morbidity and the economic burden of influenza, improved diagnostic assays are needed. METHODS We developed a multiplexed assay for the detection and subtyping of seasonal influenza based on padlock probes and rolling circle amplification. The assay simultaneously targets all 8 genome segments of the 4 circulating influenza variants-A(H1N1), A(H3N2), B/Yamagata, and B/Victoria-and was combined with a prototype cartridge for inexpensive digital quantification. Characterized virus isolates and patient nasopharyngeal swabs were used for assay design and analytical validation. The diagnostic performance was assessed by blinded testing of 50 clinical samples analyzed in parallel with a commercial influenza assay, Simplexa™ Flu A/B & RSV Direct. RESULTS The assay had a detection limit of 18 viral RNA copies and achieved 100% analytical and clinical specificity for differential detection and subtyping of seasonal circulating influenza variants. The diagnostic sensitivity on the 50 clinical samples was 77.5% for detecting influenza and up to 73% for subtyping seasonal variants. CONCLUSIONS We have presented a proof-of-concept padlock probe assay combined with an inexpensive digital readout for the detection and subtyping of seasonal influenza strains A and B. The demonstrated high specificity and multiplexing capability, together with the digital quantification, established the assay as a promising diagnostic tool for seasonal influenza.
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Affiliation(s)
- Felix Neumann
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Iván Hernández-Neuta
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Malin Grabbe
- Department of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden.,Department of Microbiology, Tumor and Cell Biology, Karolinska Institute, Stockholm, Sweden
| | - Narayanan Madaboosi
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Jan Albert
- Department of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden.,Department of Microbiology, Tumor and Cell Biology, Karolinska Institute, Stockholm, Sweden
| | - Mats Nilsson
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden;
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18
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PK/PD-based adaptive tailoring of oseltamivir doses to treat within-host influenza viral infections. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2018; 139:31-42. [PMID: 30031022 DOI: 10.1016/j.pbiomolbio.2018.07.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 06/28/2018] [Accepted: 07/11/2018] [Indexed: 12/22/2022]
Abstract
Influenza A virus (IAV) is a latent global threat to human health. In view of the risk of pandemics, prophylactic and curative treatments are essential. Oseltamivir is a neuraminidase inhibitor efficiently supporting recovery from influenza infections. Current common clinical practice is a constant drug dose (75 or 150 mg) administered at regular time intervals twice a day. We aim to use quantitative systems pharmacology to propose an efficient adaptive drug scheduling. We combined the mathematical model for IAV infections validated by murine data, which captures the viral dynamics and the dynamics of the immune host response, with a pharmacokinetic (PK)/pharmacodynamic (PD) model of oseltamivir. Next, we applied an adaptive impulsive feedback control method to systematically calculate the adaptive dose of oseltamivir in dependence on the viral load and the number of immune effectors at the time of drug administration. Our in silico results revealed that the treatment with adaptive control-based drug scheduling is able to either increase the drug virological efficacy or reduce the drug dose while keeping the same virological efficacy. Thus, adaptive adjustment of the drug dose would reduce not only the potential side effects but also the amount of stored oseltamivir required for the prevention of outbreaks.
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19
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Wang H, Deng J, Tang YW. Profile of the Alere i Influenza A & B assay: a pioneering molecular point-of-care test. Expert Rev Mol Diagn 2018; 18:403-409. [PMID: 29688086 PMCID: PMC6153442 DOI: 10.1080/14737159.2018.1466703] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION The Alere i Influenza A & B assay incorporates the Nicking Enzyme Amplification Reaction technique on the Alere i instrument to detect and differentiate influenza virus (Flu) A and B nucleic acids in specific specimens. Areas covered: The Alere i Influenza A & B assay was cleared by the US Food and Drug Administration for use with nasal swabs (NS) and nasopharyngeal swabs, either directly or in viral transport medium. Notably, direct use on NS was the first ever CLIA-waived nucleic acid-based test. Previously published evaluations have reported sensitivities and specificities of 55.2-100% and 62.5-100% for Flu A and 45.2-100% and 53.6-100% for Flu B, respectively. Expert commentary: The Alere i Influenza A & B assay provides a rapid and simple platform for detection and differentiation of Flu A and B. Efforts are expected to further improve sensitivity and user-friendliness for effective and widespread use in the true point-of-care setting.
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Affiliation(s)
- Hongmei Wang
- Division of Infectious Diseases, Shenzhen Children Hospital, Shenzhen, China
- Departments of Laboratory Medicine and Internal Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Jikui Deng
- Division of Infectious Diseases, Shenzhen Children Hospital, Shenzhen, China
| | - Yi-Wei Tang
- Departments of Laboratory Medicine and Internal Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
- Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University, New York, NY, USA
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20
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Ustinov NB, Zavyalova EG, Smirnova IG, Kopylov AM. The Power and Limitations of Influenza Virus Hemagglutinin Assays. BIOCHEMISTRY (MOSCOW) 2018; 82:1234-1248. [PMID: 29223151 DOI: 10.1134/s0006297917110025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Influenza virus hemagglutinins (HAs) are surface proteins that bind to sialic acid residues at the host cell surface and ensure further virus internalization. Development of methods for the inhibition of these processes drives progress in the design of new antiviral drugs. The state of the isolated HA (i.e. combining tertiary structure and extent of oligomerization) is defined by multiple factors, like the HA source and purification method, posttranslational modifications, pH, etc. The HA state affects HA functional activity and significantly impacts the results of numerous HA assays. In this review, we analyze the power and limitations of currently used HA assays regarding the state of HA.
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Affiliation(s)
- N B Ustinov
- Lomonosov Moscow State University, Faculty of Chemistry, Moscow, 119991, Russia.
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21
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Affiliation(s)
- Jin Seo Lee
- Division of Infectious Disease, Department of Internal Medicine, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
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22
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Hassanpour S, Baradaran B, Hejazi M, Hasanzadeh M, Mokhtarzadeh A, de la Guardia M. Recent trends in rapid detection of influenza infections by bio and nanobiosensor. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2017.11.012] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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23
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Anik Ü, Tepeli Y, Sayhi M, Nsiri J, Diouani MF. Towards the electrochemical diagnostic of influenza virus: development of a graphene–Au hybrid nanocomposite modified influenza virus biosensor based on neuraminidase activity. Analyst 2018; 143:150-156. [DOI: 10.1039/c7an01537b] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An effective electrochemical influenza A biosensor based on a graphene–gold (Au) hybrid nanocomposite modified Au-screen printed electrode has been developed.
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Affiliation(s)
- Ülkü Anik
- Mugla Sitki Kocman University
- Faculty of Science
- Chemistry Department
- Kotekli/Mugla
- Turkey
| | - Yudum Tepeli
- Mugla Sitki Kocman University
- Faculty of Science
- Chemistry Department
- Kotekli/Mugla
- Turkey
| | - Maher Sayhi
- Laboratory of Epidemiology and Veterinary Microbiology (LEMV)
- Institut Pasteur de Tunis
- University of Tunis El Manar
- LR11IPT03
- Tunis-Belvédère 1002
| | - Jihene Nsiri
- Laboratory of Epidemiology and Veterinary Microbiology (LEMV)
- Institut Pasteur de Tunis
- University of Tunis El Manar
- LR11IPT03
- Tunis-Belvédère 1002
| | - Mohamed Fethi Diouani
- Laboratory of Epidemiology and Veterinary Microbiology (LEMV)
- Institut Pasteur de Tunis
- University of Tunis El Manar
- LR11IPT03
- Tunis-Belvédère 1002
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24
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Affiliation(s)
- Mark D Gonzalez
- Department of Pathology, Children's Healthcare of Atlanta, 1405 Clifton Road, Northeast, Atlanta, GA 30322, USA
| | - Erin McElvania
- Department of Pathology, NorthShore University Health System, 2650 Ridge Avenue, Evanston, IL 60201, USA.
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25
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Abstract
Influenza is an acute respiratory illness, caused by influenza A, B, and C viruses, that occurs in local outbreaks or seasonal epidemics. Clinical illness follows a short incubation period and presentation ranges from asymptomatic to fulminant, depending on the characteristics of both the virus and the individual host. Influenza A viruses can also cause sporadic infections or spread worldwide in a pandemic when novel strains emerge in the human population from an animal host. New approaches to influenza prevention and treatment for management of both seasonal influenza epidemics and pandemics are desirable. In this Seminar, we discuss the clinical presentation, transmission, diagnosis, management, and prevention of seasonal influenza infection. We also review the animal-human interface of influenza, with a focus on current pandemic threats.
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Affiliation(s)
- Catharine Paules
- Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Kanta Subbarao
- Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.
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26
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Abstract
Acute upper and lower respiratory infections are a major public health problem and a leading cause of morbidity and mortality worldwide. At greatest risk are young children, the elderly, the chronically ill, and those with suppressed or compromised immune systems. Viruses are the predominant cause of respiratory tract illnesses and include RNA viruses such as respiratory syncytial virus, influenza virus, parainfluenza virus, metapneumovirus, rhinovirus, and coronavirus. Laboratory testing is required for a reliable diagnosis of viral respiratory infections, as a clinical diagnosis can be difficult since signs and symptoms are often overlapping and not specific for any one virus. Recent advances in technology have resulted in the development of newer diagnostic assays that offer great promise for rapid and accurate detection of respiratory viral infections. This chapter emphasizes the fundamental characteristics and clinical importance of the various RNA viruses that cause upper and lower respiratory tract diseases in the immunocompromised host. It highlights the laboratory methods that can be used to make a rapid and definitive diagnosis for the greatest impact on the care and management of ill patients, and the prevention and control of hospital-acquired infections and community outbreaks.
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27
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Rapid diagnostic test for respiratory infections. ENFERMEDADES INFECCIOSAS Y MICROBIOLOGIA CLINICA (ENGLISH ED.) 2017. [PMCID: PMC7148712 DOI: 10.1016/j.eimce.2017.01.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Acute respiratory infections are the second cause of morbidity and mortality in children and adults worldwide, being viruses, bacteria and fungi involved in their aetiology. The rapid diagnosis allows for a better clinical management of the patient, for adopting public health measures and for controlling possible outbreaks. The main etiologic agents can be diagnosed within the first hours after the onset of symptoms with antigen detection techniques, primarily immunochromatography. Results are obtained in 15–30 min, with 70–90% sensitivity and >95% specificity for the diagnosis of Streptococcus pneumoniae and Legionella pneumophila serogroup O1 infections from urine, Streptococcus pyogenes from throat swabs and respiratory syncytial virus from nasopharyngeal aspirates. Worse results are obtained for influenza viruses and Pneumocystis jirovecii with these techniques; however, other easy-to-perform molecular techniques are available for the rapid diagnosis of these microorganisms. In general, these techniques should not be used for monitoring the outcome or response to treatment.
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28
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Marimón JM, Navarro-Marí JM. [Rapid diagnostic test for respiratory infections]. Enferm Infecc Microbiol Clin 2017; 35:108-115. [PMID: 28062161 PMCID: PMC7126338 DOI: 10.1016/j.eimc.2016.11.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 11/29/2016] [Indexed: 11/26/2022]
Abstract
Acute respiratory infections are the second cause of morbidity and mortality in children and adults worldwide, being viruses, bacteria and fungi involved in their etiology. The rapid diagnosis allows for a better clinical management of the patient, for adopting public health measures and for controlling possible outbreaks. The main etiologic agents can be diagnosed within the first hours after the onset of symptoms with antigen detection techniques, primarily immunochromatography. Results are obtained in 15-30minutes, with 70-90% sensitivity and >95% specificity for the diagnosis of Streptococcus pneumoniae and Legionella pneumophila serogroup O1 infections from urine, Streptococcus pyogenes from throat swabs and respiratory syncytial virus from nasopharyngeal aspirates. Worse results are obtained for influenza viruses and Pneumocystis jirovecii with these techniques; however, other easy-to-perform molecular techniques are available for the rapid diagnosis of these microorganisms. In general, these techniques should not be used for monitoring the outcome or response to treatment.
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Affiliation(s)
- José María Marimón
- Microbiology Department, Hospital Universitario Donostia-Instituto de Investigación Sanitaria Biodonostia, San Sebastián, España; Biomedical Research Center Network for Respiratory Diseases (CIBERES), San Sebastián, España.
| | - José María Navarro-Marí
- Servicio de Microbiología, Hospital Virgen de las Nieves, Complejo Hospitales Universitarios de Granada, Granada, España; Instituto Biosanitario Granada
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29
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Coyne CJ, Abraham MK, Perkins J, Vilke GM. Influenza in the Emergency Department: Vaccination, Diagnosis, and Treatment. J Emerg Med 2016; 51:735-736. [PMID: 27687169 DOI: 10.1016/j.jemermed.2016.07.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Accepted: 07/19/2016] [Indexed: 06/06/2023]
Affiliation(s)
- Christopher J Coyne
- Department of Emergency Medicine, University of California San Diego School of Medicine, San Diego, California
| | - Michael K Abraham
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, Maryland
| | - Jack Perkins
- Department of Emergency Medicine, Virginia Tech Carilion School of Medicine, Roanoke, Virginia
| | - Gary M Vilke
- Department of Emergency Medicine, University of California San Diego School of Medicine, San Diego, California
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30
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Karlsson EA. Setting a trap for respiratory viruses. Virulence 2016; 7:740-1. [PMID: 27327437 DOI: 10.1080/21505594.2016.1204062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- Erik A Karlsson
- a Department of Infectious Diseases , St. Jude Children's Research Hospital , Memphis , TN , USA
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31
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Clinical Utility of On-Demand Multiplex Respiratory Pathogen Testing among Adult Outpatients. J Clin Microbiol 2016; 54:2950-2955. [PMID: 27654334 DOI: 10.1128/jcm.01579-16] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 09/13/2016] [Indexed: 11/20/2022] Open
Abstract
Multiplex tests for respiratory tract infections include up to 20 targets for common pathogens, predominantly viruses. A specific therapeutic intervention is available for individuals testing positive for influenza viruses (oseltamivir), and it is potentially beneficial to identify non-influenza viruses to avoid unnecessary antibiotic use. We evaluated antimicrobial prescriptions following respiratory pathogen testing among outpatients at a large Veterans Administration (VA) medical center. Results of the FilmArray respiratory panel (BioFire, Salt Lake City, UT) from 15 December 2014 to 15 April 2015 were evaluated among 408 outpatients, and patient medical records were reviewed. Differences in antibiotic and oseltamivir prescription rates were analyzed. Among 408 patients tested in outpatient centers (emergency departments, urgent care clinics, and outpatient clinics), 295 (72.3%) were managed as outpatients. Among these 295 outpatients, 105 (35.6%) tested positive for influenza virus, 109 (36.9%) tested positive for a non-influenza virus pathogen, and 81 (27.5%) had no respiratory pathogen detected. Rates of oseltamivir and antibiotic prescriptions were significantly different among the three test groups (chi-squared values of 167.6 [P < 0.0001] and 10.48 [P = 0.005], respectively), but there was no significant difference in antibiotic prescription rates between the non-influenza virus pathogen group and those who tested negative (chi-square value, 0; P = 1.0). Among adult outpatients, testing positive for influenza virus was associated with receiving fewer antibiotic prescriptions, but no such effect was seen for those who tested positive for a non-influenza virus. These data suggest that testing for influenza viruses alone may be sufficient and more cost-effective than multiplex pathogen testing for outpatients.
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32
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Anik Ü, Tepeli Y, Diouani MF. Fabrication of Electrochemical Model Influenza A Virus Biosensor Based on the Measurements of Neuroaminidase Enzyme Activity. Anal Chem 2016; 88:6151-3. [PMID: 27281347 DOI: 10.1021/acs.analchem.6b01720] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Neuroaminidase (NA) enzyme is a kind of glycoprotein that is found on the influenza A virus. During infection, NA is important for the release of influenza virions from the host cell surface together with viral aggregates. It may also be involved in targeting the virus to respiratory epithelial cells. In this study, a model electrochemical influenza A viral biosensor in which receptor-binding properties have been based on NA was developed for the first time. The biosensor's working principle is based on monitoring the interactions between fetuin A and NA enzyme. The assay was monitored step by step by using electrochemical impedance spectroscopy.
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Affiliation(s)
- Ülkü Anik
- Mugla Sitki Kocman University , Faculty of Science, Chemistry Department, Kotekli, Mugla, Turkey 48000
| | - Yudum Tepeli
- Mugla Sitki Kocman University , Faculty of Science, Chemistry Department, Kotekli, Mugla, Turkey 48000
| | - Mohamed F Diouani
- Institut Pasteur de Tunis, Université Tunis Elmanar , LR11 IPT03, PB74, 13 Place Pasteur, Le Belvédère, 1002 Tunis, Tunisia.,Faculté des Sciences de Bizerte, Université de Carthage , Tunisia
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33
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Navarro-Marí JM. Rapid diagnostic methods for acute viral respiratory infections. Enferm Infecc Microbiol Clin 2016; 34:329-30. [PMID: 27156247 PMCID: PMC7103359 DOI: 10.1016/j.eimc.2016.04.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 04/04/2016] [Indexed: 12/11/2022]
Affiliation(s)
- José M Navarro-Marí
- Servicio de Microbiología, Complejo Hospitales Universitarios de Granada, Instituto Biosanitario Granada, Granada, Spain.
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34
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Abstract
OBJECTIVES To describe the strengths and limitations of the available influenza diagnostics, with a focus on rapid antigen detection assays and nucleic acid detection assays. METHODS A case-based presentation is used to illustrate the potential limitations of rapid antigen detection assays for influenza. RESULTS Influenza is a seasonal illness; estimates attribute influenza to approximately 200,000 hospitalizations and 41,000 deaths in the United States annually. Antigen detection assays for influenza are rapid and convenient, and thus are widely used in a variety of health care settings, even though the sensitivity of these assays may be suboptimal. The United States Food and Drug Administration has recently created new guidelines intended to improve the oversight and performance characteristics of influenza antigen detection assays. Molecular assays, although more costly and complex, are more sensitive and may be designed to simultaneously detect multiple respiratory pathogens within a single assay. CONCLUSIONS Diagnostic assays for influenza can vary greatly with regards to analytical performance characteristics, complexity, turnaround time and cost. This can have important patient care and infection prevention implications.
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Affiliation(s)
- Allison R McMullen
- From the Department of Pathology and Immunology, Washington University in St Louis School of Medicine, St Louis, MO
| | - Neil W Anderson
- From the Department of Pathology and Immunology, Washington University in St Louis School of Medicine, St Louis, MO
| | - Carey-Ann D Burnham
- From the Department of Pathology and Immunology, Washington University in St Louis School of Medicine, St Louis, MO.
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35
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Overmeire Y, Vanlaere E, Hombrouck A, De Beenhouwer H, Simons G, Brink A, Van den Abeele AM, Verfaillie C, Van Acker J. Severe sensitivity loss in an influenza A molecular assay due to antigenic drift variants during the 2014/15 influenza season. Diagn Microbiol Infect Dis 2016; 85:42-6. [PMID: 26964723 DOI: 10.1016/j.diagmicrobio.2016.02.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 01/20/2016] [Accepted: 02/04/2016] [Indexed: 11/17/2022]
Abstract
The 2014-2015 influenza season in Belgium was dominated by the circulation of 2 influenza A(H3N2) subgroups: 3C.2a and 3C.3b. Analysis of 166 nasopharyngeal aspirates, collected in patients with respiratory illness at the start of the epidemic season, showed a decreased sensitivity for the detection of influenza A(H3N2)/3C.2a using a commercially available multiplex assay. Gene sequencing of the matrix protein showed a point mutation (C163T) leading to a mismatch with the assay probes.
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Affiliation(s)
- Yarah Overmeire
- Laboratory of Clinical Microbiology, AZ Sint-Lucas, Groenebriel 1, 9000 Ghent, Belgium
| | - Elke Vanlaere
- Laboratory of Clinical Microbiology, AZ Sint-Lucas, Groenebriel 1, 9000 Ghent, Belgium
| | - Anneleen Hombrouck
- National Reference Center for Influenza, Scientific Institute of Public Health, Engelandstraat 642, 1180 Brussels, Belgium
| | - Hans De Beenhouwer
- Laboratory of Clinical Microbiology, Onze-Lieve-Vrouwziekenhuis, Moorselbaan 164, 9300 Aalst, Belgium
| | - Guus Simons
- PathoFinder B.V., Randwycksingel 45, 6229 EG Maastricht, The Netherlands
| | - Antoinette Brink
- PathoFinder B.V., Randwycksingel 45, 6229 EG Maastricht, The Netherlands
| | | | - Charlotte Verfaillie
- Laboratory of Clinical Microbiology, AZ Sint-Lucas, Groenebriel 1, 9000 Ghent, Belgium
| | - Jos Van Acker
- Laboratory of Clinical Microbiology, AZ Sint-Lucas, Groenebriel 1, 9000 Ghent, Belgium.
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36
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Abraham MK, Perkins J, Vilke GM, Coyne CJ. Influenza in the Emergency Department: Vaccination, Diagnosis, and Treatment: Clinical Practice Paper Approved by American Academy of Emergency Medicine Clinical Guidelines Committee. J Emerg Med 2016; 50:536-42. [PMID: 26763858 DOI: 10.1016/j.jemermed.2015.10.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 10/10/2015] [Accepted: 10/13/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Influenza is an acute respiratory virus that results in significant worldwide morbidity and mortality each year. As emergency physicians, we are often the first to encounter patients with seasonal influenza. It is therefore critical that we draw on the most recent and relevant research when we make clinical decisions regarding the diagnosis, treatment, and prophylaxis of this disease. METHODS A MEDLINE literature search from August 2009 to August 2015 was performed using the keywords influenza vaccination efficacy AND systematic, influenza AND rapid antigen testing, and Oseltamivir AND systematic, while limiting the search to human studies written in the English language. General review articles and case reports were omitted. Each of the selected articles then underwent a structured review. RESULTS We identified 163 articles through our literature search, of which 68 were found to be relevant to our clinical questions. These studies then underwent a rigorous review from which recommendations were given. CONCLUSIONS Influenza vaccine efficacy continues to range between 40% and 80%. Vaccination has the potential to decrease disease severity and is recommended for individuals older than 6 months of age. If resources permit, vaccination can be offered to patients presenting to the emergency department. Rapid antigen detection for influenza is a simple bedside test with high specificity, but generally low sensitivity. If a patient presents with a syndrome consistent with influenza and has negative rapid antigen detection, they should either receive a confirmatory reverse transcriptase polymerase chain reaction or be treated as if they have influenza. Treatment with neuraminidase inhibitors can decrease the duration of influenza and is recommended in hospitalized patients, or in those with high risk of complications.
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Affiliation(s)
- Michael K Abraham
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, Maryland
| | - Jack Perkins
- Department of Emergency Medicine, Virginia Tech Carilion School of Medicine, Roanoke, Virginia
| | - Gary M Vilke
- Department of Emergency Medicine, University of California San Diego School of Medicine, San Diego, California
| | - Christopher J Coyne
- Department of Emergency Medicine, University of California San Diego School of Medicine, San Diego, California
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37
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Esposito S, Principi N. Oseltamivir for influenza infection in children: risks and benefits. Expert Rev Respir Med 2015; 10:79-87. [PMID: 26616633 DOI: 10.1586/17476348.2016.1126182] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Influenza is a common disease affecting many children each year. In a number of cases, particularly in children <2 years old and in those with severe chronic underlying disease, influenza can be complicated by lower respiratory tract infections, acute otitis media, rhinosinusitis, febrile seizures, dehydration or encephalopathy. Oseltamivir is the influenza virus drug that is most commonly studied in children for both the treatment and prevention of influenza. To avoid the risk that children with mild influenza or patients suffering from different viral infections receive oseltamivir, oseltamivir treatment should be recommended only in severe influenza cases, especially if confirmed by reliable laboratory tests. However, therapy must be initiated considering the risk of complications and the presence of severe clinical manifestations at age- and weight-appropriate doses. Because the vaccine remains the best option for preventing influenza and its complications, prophylaxis using oseltamivir should only be considered in select patients.
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Affiliation(s)
- Susanna Esposito
- a Paediatric Highly Intensive Care Unit, Department of Pathophysiology and Transplantation , Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico , Milan , Italy
| | - Nicola Principi
- a Paediatric Highly Intensive Care Unit, Department of Pathophysiology and Transplantation , Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico , Milan , Italy
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38
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Sanchez JL, Cooper MJ, Myers CA, Cummings JF, Vest KG, Russell KL, Sanchez JL, Hiser MJ, Gaydos CA. Respiratory Infections in the U.S. Military: Recent Experience and Control. Clin Microbiol Rev 2015; 28:743-800. [PMID: 26085551 PMCID: PMC4475643 DOI: 10.1128/cmr.00039-14] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
This comprehensive review outlines the impact of military-relevant respiratory infections, with special attention to recruit training environments, influenza pandemics in 1918 to 1919 and 2009 to 2010, and peacetime operations and conflicts in the past 25 years. Outbreaks and epidemiologic investigations of viral and bacterial infections among high-risk groups are presented, including (i) experience by recruits at training centers, (ii) impact on advanced trainees in special settings, (iii) morbidity sustained by shipboard personnel at sea, and (iv) experience of deployed personnel. Utilizing a pathogen-by-pathogen approach, we examine (i) epidemiology, (ii) impact in terms of morbidity and operational readiness, (iii) clinical presentation and outbreak potential, (iv) diagnostic modalities, (v) treatment approaches, and (vi) vaccine and other control measures. We also outline military-specific initiatives in (i) surveillance, (ii) vaccine development and policy, (iii) novel influenza and coronavirus diagnostic test development and surveillance methods, (iv) influenza virus transmission and severity prediction modeling efforts, and (v) evaluation and implementation of nonvaccine, nonpharmacologic interventions.
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Affiliation(s)
- Jose L Sanchez
- Armed Forces Health Surveillance Center, Silver Spring, Maryland, USA
| | - Michael J Cooper
- Armed Forces Health Surveillance Center, Silver Spring, Maryland, USA
| | | | - James F Cummings
- Armed Forces Health Surveillance Center, Silver Spring, Maryland, USA
| | - Kelly G Vest
- Armed Forces Health Surveillance Center, Silver Spring, Maryland, USA
| | - Kevin L Russell
- Armed Forces Health Surveillance Center, Silver Spring, Maryland, USA
| | - Joyce L Sanchez
- Mayo Clinic, Division of General Internal Medicine, Rochester, Minnesota, USA
| | - Michelle J Hiser
- Armed Forces Health Surveillance Center, Silver Spring, Maryland, USA Oak Ridge Institute for Science and Education, Postgraduate Research Participation Program, U.S. Army Public Health Command, Aberdeen Proving Ground, Aberdeen, Maryland, USA
| | - Charlotte A Gaydos
- International STD, Respiratory, and Biothreat Research Laboratory, Division of Infectious Diseases, Johns Hopkins University, Baltimore, Maryland, USA
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39
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Goldenberg SD, Edgeworth JD. The Enigma ML FluAB-RSV assay: a fully automated molecular test for the rapid detection of influenza A, B and respiratory syncytial viruses in respiratory specimens. Expert Rev Mol Diagn 2015; 15:23-32. [PMID: 25399865 DOI: 10.1586/14737159.2015.983477] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The Enigma(®) ML FluAB-RSV assay (Enigma Diagnostics, Porton Down, Salisbury, UK) is a CE-IVD marked multiplex molecular panel for the detection of influenza A, B and respiratory syncytial viruses in nasopharyngeal swabs. The assay runs on the fully automated Enigma ML platform without further specimen manipulation and provides a sample-to-answer result within 95 min. The reported sensitivity and specificity for influenza A are 100% (95% CI: 98.2-100) and 98.3% (95% CI: 95.5-99.4), respectively, for influenza B are 100% (95% CI: 98.2-100) and 98.7% (95% CI: 96-99.6), respectively, and for respiratory syncytial virus are 100% (95% CI: 98.2-100) and 99.4% (95% CI: 97.2-99.9), respectively.
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Affiliation(s)
- Simon D Goldenberg
- Centre for Clinical Infection and Diagnostics Research, King's College London and Guy's and St Thomas' NHS Foundation Trust, London SE1 7EH, UK
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40
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Performance of the molecular Alere I influenza A&B test compared to that of the xpert flu A/B assay. J Clin Microbiol 2014; 53:706-9. [PMID: 25502527 DOI: 10.1128/jcm.02783-14] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Data on the performance of rapid molecular point-of-care use platforms for diagnosis of influenza are lacking. We validated nasopharyngeal (NP) flocked specimens in universal transport medium (UTM) and evaluated the clinical sensitivity and specificity of the Alere i influenza A&B test compared to those of the Xpert flu A/B assay. The Alere i influenza A&B test had an overall sensitivity and specificity of 93.8% and 62.5% for influenza A, respectively, and of 91.8% and 53.6% for influenza B, respectively. The poor specificity was due to influenza virus samples determined positive for both type A and B.
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41
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Coulombe F, Divangahi M. Targeting eicosanoid pathways in the development of novel anti-influenza drugs. Expert Rev Anti Infect Ther 2014; 12:1337-43. [PMID: 25269880 DOI: 10.1586/14787210.2014.966082] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The constant new emergence of life-threatening human respiratory viral pathogens presents new challenges to clinicians who are left with no available therapeutic interventions. Highly pathogenic strains of influenza A virus (IAV) share an enhanced capacity to propagate to the lower airways and paralyze alveolar macrophage antiviral capacity in order to replicate efficiently and cause pathologic inflammation. Following a century of using NSAIDs for the management of influenza symptoms, a number of studies have interrogated their function in the host response to IAV infection. We herein provide an overview of these studies as well as further insight of how pathogenic IAV hijacks the microsomal prostaglandin E synthase-1-dependent prostaglandin E2 pathway in order to evade host type I interferon-mediated antiviral immunity. We also reflect on the potential beneficial action of microsomal prostaglandin E synthase-1 inhibitory compounds in the treatment of IAV infections and potentially other RNA viruses.
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Affiliation(s)
- François Coulombe
- Department of Medicine, Department of Microbiology and Immunology, Department of Pathology, McGill International TB Centre, McGill University Health Centre, Meakins-Christie Laboratories, 3626 St. Urbain Street, Montreal, Quebec, H2X 2P2, Canada
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42
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Evaluation of the Alere I influenza A&B nucleic acid amplification test by use of respiratory specimens collected in viral transport medium. J Clin Microbiol 2014; 52:3992-5. [PMID: 25210070 DOI: 10.1128/jcm.01639-14] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The Alere i Influenza A&B assay is a newly developed rapid molecular assay which has the potential to generate results within 15 min from sample collection. In this study, we evaluated the Alere i Influenza A&B assay by using salvaged frozen respiratory specimens that were collected in viral transport medium from children ages 10 months to 19 years. Alere i Influenza A&B assay test results were compared with viral culture and ProFlu(+) real-time reverse transcription-PCR (RT-PCR) assay results. We found that the overall sensitivity and specificity of the Alere i Influenza A&B assay were 93.3% and 94.5% for the detection of influenza A virus and 100% and 100% for the detection of influenza B virus, respectively, compared to viral culture. In comparison to ProFlu(+) real-time RT-PCR, overall sensitivity and specificity of the Alere i Influenza A&B assay for the detection of influenza A virus were 88.8% and 98.3% and 100% and 100% for detecting influenza B virus. Overall, the Alere i Influenza A&B assay performed well compared to either virus cell culture or RT-PCR.
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