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de Jong D, Carrell C, Maganga JK, Mhango L, Shigella PS, Gill M, Shogren R, Mullins B, Warrick JW, Changalucha JM, van Dam GJ, Pham K, Downs JA, Corstjens PLAM. Flow-S: A Field-Deployable Device with Minimal Hands-On Effort to Concentrate and Quantify Schistosoma Circulating Anodic Antigen (CAA) from Large Urine Volumes. Diagnostics (Basel) 2024; 14:820. [PMID: 38667466 PMCID: PMC11048900 DOI: 10.3390/diagnostics14080820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/26/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
A laboratory-based lateral flow (LF) test that utilizes up-converting reporter particles (UCP) for ultrasensitive quantification of Schistosoma circulating anodic antigen (CAA) in urine is a well-accepted test to identify active infection. However, this UCP-LF CAA test requires sample pre-treatment steps not compatible with field applications. Flow, a new low-cost disposable, allows integration of large-volume pre-concentration of urine analytes and LF detection into a single field-deployable device. We assessed a prototype Flow-Schistosoma (Flow-S) device with an integrated UCP-LF CAA test strip, omitting all laboratory-based steps, to enable diagnosis of active Schistosoma infection in the field using urine. Flow-S is designed for large-volume (5-20 mL) urine, applying passive paper-based filtration and antibody-based CAA concentration. Samples tested for schistosome infection were collected from women of reproductive age living in a Tanzania region where S. haematobium infection is endemic. Fifteen negative and fifteen positive urine samples, selected based on CAA levels quantified in paired serum, were analyzed with the prototype Flow-S. The current Flow-S prototype, with an analytical lower detection limit of 1 pg CAA/mL, produced results correlated with the laboratory-based UCP-LF CAA test. Urine precipitates occurred in frozen banked samples and affected accurate quantification; however, this should not occur in fresh urine. Based on the findings of this study, Flow-S appears suitable to replace the urine pre-treatment required for the laboratory-based UCP-LF CAA test, thus allowing true field-based applications with fresh urine samples. The urine precipitates observed with frozen samples, though less important given the goal of testing fresh urines, warrant additional investigation to evaluate methods for mitigation. Flow-S devices permit testing of pooled urine samples with applications for population stratified testing. A field test with fresh urine samples, a further optimized Flow-S device, and larger statistical power has been scheduled.
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Affiliation(s)
- Daniëlle de Jong
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | | | - Jane K. Maganga
- Mwanza Intervention Trials Unit/National Institute for Medical Research, Mwanza, Tanzania
| | - Loyce Mhango
- Mwanza Intervention Trials Unit/National Institute for Medical Research, Mwanza, Tanzania
| | - Peter S. Shigella
- Mwanza Intervention Trials Unit/National Institute for Medical Research, Mwanza, Tanzania
| | - Maddy Gill
- Salus Discovery LLC, Madison, WI 53703, USA
| | | | | | | | - John M. Changalucha
- Mwanza Intervention Trials Unit/National Institute for Medical Research, Mwanza, Tanzania
| | - Govert J. van Dam
- Department of Parasitology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Khanh Pham
- Division of Infectious Diseases, Weill Cornell Medicine, New York, NY 10065, USA
| | - Jennifer A. Downs
- Mwanza Intervention Trials Unit/National Institute for Medical Research, Mwanza, Tanzania
- Center for Global Health, Weill Cornell Medicine, New York, NY 10065, USA
- Department of Medicine, Weill Bugando School of Medicine, Mwanza, Tanzania
| | - Paul L. A. M. Corstjens
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
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Rivera JC, Opazo MC, Hernández-Armengol R, Álvarez O, Mendoza-León MJ, Caamaño E, Gatica S, Bohmwald K, Bueno SM, González PA, Neunlist M, Boudin H, Kalergis AM, Riedel CA. Transient gestational hypothyroxinemia accelerates and enhances ulcerative colitis-like disorder in the male offspring. Front Endocrinol (Lausanne) 2024; 14:1269121. [PMID: 38239991 PMCID: PMC10794346 DOI: 10.3389/fendo.2023.1269121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 11/06/2023] [Indexed: 01/22/2024] Open
Abstract
Introduction Gestational hypothyroxinemia (HTX) is a condition that occurs frequently at the beginning of pregnancy, and it correlates with cognitive impairment, autism, and attentional deficit in the offspring. Evidence in animal models suggests that gestational HTX can increase the susceptibility of the offspring to develop strong inflammation in immune-mediated inflammatory diseases. Ulcerative colitis (UC) is a frequent inflammatory bowel disease with unknown causes. Therefore, the intensity of ulcerative colitis-like disorder (UCLD) and the cellular and molecular factors involved in proinflammatory or anti-inflammatory responses were analyzed in the offspring gestated in HTX (HTX-offspring) and compared with the offspring gestated in euthyroidism (Control-offspring). Methods Gestational HTX was induced by the administration of 2-mercapto-1-methylimidazole in drinking water to pregnant mice during E10-E14. The HTX-offspring were induced with UCLD by the acute administration of dextran sodium sulfate (DSS). The score of UCLD symptomatology was registered every day, and colon histopathology, immune cells, and molecular factors involved in the inflammatory or anti-inflammatory response were analyzed on day 6 of DSS treatment. Results The HTX-offspring displayed earlier UCLD pathological symptoms compared with the Control-offspring. After 6 days of DSS treatment, the HTX-offspring almost doubled the score of the Control-offspring. The histopathological analyses of the colon samples showed signs of inflammation at the distal and medial colon for both the HTX-offspring and Control-offspring. However, significantly more inflammatory features were detected in the proximal colon of the HTX-offspring induced with UCLD compared with the Control-offspring induced with UCLD. Significantly reduced mRNA contents encoding for protective molecules like glutamate-cysteine ligase catalytic subunit (GCLC) and mucin-2 (MUC-2) were found in the colon of the HTX-offspring as compared with the Control-offspring. Higher percentages of Th17 lymphocytes were detected in the colon tissues of the HTX-offspring induced or not with UCLD as compared with the Control-offspring. Discussion Gestational HTX accelerates the onset and increases the intensity of UCLD in the offspring. The low expression of MUC-2 and GCLC together with high levels of Th17 Lymphocytes in the colon tissue suggests that the HTX-offspring has molecular and cellular features that favor inflammation and tissue damage. These results are important evidence to be aware of the impact of gestational HTX as a risk factor for UCLD development in offspring.
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Affiliation(s)
- Juan Carlos Rivera
- Laboratorio de Endocrino-inmunología, Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ma. Cecilia Opazo
- Millennium Institute on Immunology and Immunotherapy, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Facultad de Medicina Veterinaria y Agronomía, Instituto de Ciencias Naturales, Universidad de las Américas, Santiago, Chile
| | - Rosario Hernández-Armengol
- Laboratorio de Endocrino-inmunología, Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Oscar Álvarez
- Laboratorio de Endocrino-inmunología, Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - María José Mendoza-León
- Laboratorio de Endocrino-inmunología, Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Esteban Caamaño
- Laboratorio de Endocrino-inmunología, Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Sebastian Gatica
- Laboratorio de Endocrino-inmunología, Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Karen Bohmwald
- Millennium Institute on Immunology and Immunotherapy, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago, Chile
| | - Susan M. Bueno
- Millennium Institute on Immunology and Immunotherapy, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pablo A. González
- Millennium Institute on Immunology and Immunotherapy, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Michel Neunlist
- Université de Nantes, Inserm, TENS, The Enteric Nervous System in Gut and Brain Disorders, IMAD, Nantes, France
| | - Helene Boudin
- Université de Nantes, Inserm, TENS, The Enteric Nervous System in Gut and Brain Disorders, IMAD, Nantes, France
| | - Alexis M. Kalergis
- Millennium Institute on Immunology and Immunotherapy, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Claudia A. Riedel
- Laboratorio de Endocrino-inmunología, Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
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Farka Z, Brandmeier JC, Mickert MJ, Pastucha M, Lacina K, Skládal P, Soukka T, Gorris HH. Nanoparticle-Based Bioaffinity Assays: From the Research Laboratory to the Market. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307653. [PMID: 38039956 DOI: 10.1002/adma.202307653] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 11/16/2023] [Indexed: 12/03/2023]
Abstract
Advances in the development of new biorecognition elements, nanoparticle-based labels as well as instrumentation have inspired the design of new bioaffinity assays. This review critically discusses the potential of nanoparticles to replace current enzymatic or molecular labels in immunoassays and other bioaffinity assays. Successful implementations of nanoparticles in commercial assays and the need for rapid tests incorporating nanoparticles in different roles such as capture support, signal generation elements, and signal amplification systems are highlighted. The limited number of nanoparticles applied in current commercial assays can be explained by challenges associated with the analysis of real samples (e.g., blood, urine, or nasal swabs) that are difficult to resolve, particularly if the same performance can be achieved more easily by conventional labels. Lateral flow assays that are based on the visual detection of the red-colored line formed by colloidal gold are a notable exception, exemplified by SARS-CoV-2 rapid antigen tests that have moved from initial laboratory testing to widespread market adaption in less than two years.
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Affiliation(s)
- Zdeněk Farka
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic
| | - Julian C Brandmeier
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| | | | - Matěj Pastucha
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic
- TestLine Clinical Diagnostics, Křižíkova 188, Brno, 612 00, Czech Republic
| | - Karel Lacina
- CEITEC-Central European Institute of Technology, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic
| | - Petr Skládal
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic
| | - Tero Soukka
- Department of Life Technologies/Biotechnology, University of Turku, Kiinamyllynkatu 10, Turku, 20520, Finland
| | - Hans H Gorris
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic
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Host biomarker-based quantitative rapid tests for detection and treatment monitoring of tuberculosis and COVID-19. iScience 2022; 26:105873. [PMID: 36590898 PMCID: PMC9791715 DOI: 10.1016/j.isci.2022.105873] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 10/24/2022] [Accepted: 12/21/2022] [Indexed: 12/27/2022] Open
Abstract
Diagnostic services for tuberculosis (TB) are not sufficiently accessible in low-resource settings, where most cases occur, which was aggravated by the COVID-19 pandemic. Early diagnosis of pulmonary TB can reduce transmission. Current TB-diagnostics rely on detection of Mycobacterium tuberculosis (Mtb) in sputum requiring costly, time-consuming methods, and trained staff. In this study, quantitative lateral flow (LF) assays were used to measure levels of seven host proteins in sera from pre-COVID-19 TB patients diagnosed in Europe and latently Mtb-infected individuals (LTBI), and from COVID-19 patients and healthy controls. Analysis of host proteins showed significantly lower levels in LTBI versus TB (AUC:0 · 94) and discriminated healthy individuals from COVID-19 patients (0 · 99) and severe COVID-19 from TB. Importantly, these host proteins allowed treatment monitoring of both respiratory diseases. This study demonstrates the potential of non-sputum LF assays as adjunct diagnostics and treatment monitoring for COVID-19 and TB based on quantitative detection of multiple host biomarkers.
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Lin X, Jiang Y, Wu JJ, Eda S, Wan N. An alternating current electrokinetics biosensor for rapid on-site serological screening of Taenia solium cysticercosis infection. Mikrochim Acta 2022; 189:476. [DOI: 10.1007/s00604-022-05575-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 11/09/2022] [Indexed: 11/27/2022]
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Li J, Ding J, Liu XL, Tang B, Bai X, Wang Y, Qiao WD, Liu MY, Wang XL. Upconverting phosphor technology-based lateral flow assay for the rapid and sensitive detection of anti-Trichinella spiralis IgG antibodies in pig serum. Parasit Vectors 2021; 14:487. [PMID: 34551787 PMCID: PMC8456594 DOI: 10.1186/s13071-021-04949-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 08/12/2021] [Indexed: 01/31/2023] Open
Abstract
Background Trichinella spiralis is a zoonotic food-borne parasite. A disease caused by infection with T. spiralis is called trichinellosis in humans. It is important to investigate the epidemic situation and the surveillance of herds and then prevent infection in humans. Therefore, this study is to develop a rapid and sensitive diagnostic method for on-site test in domestic and wild animals. Methods Upconverting phosphor nanoparticles (UCNPs), an excellent optical label, were conjugated with the excretory-secretory (ES) antigens from T. spiralis muscle larvae (ML) or goat anti-rabbit IgG, and a lateral flow (LF) assay based on these probes (UCNPs-ES/goat anti-rabbit IgG) was developed for the rapid and sensitive detection of anti-T. spiralis IgG antibodies in pig serum. The assay is named the UPT-LF-ES assay. In addition, the probes were characterized, and the assay was optimized. A cut-off threshold of the assay was also identified by using 169 known negative pig samples. Performance of the assay to T. spiralis with different infective numbers, cross-reactivity with other parasitic infections, the single-blinded experiment, and coincidence were evaluated with the assay. Results The UPT-LF-ES assay was successfully constructed and optimized based on the probes of UCNPs-ES/goat anti-rabbit IgG. In the pigs infected with 100, 1000, and 10,000 ML, positive results were first presented at 35 days post-infection (dpi), 30 dpi, and 25 dpi, respectively. The assay had no cross-reaction with other parasitic infections. A single-blinded experiment indicated that the sensitivity and specificity of the UPT-LF-ES assay were 100% and 100%, respectively, the area under the receiver operating characteristic (ROC) curve was 1.000. In addition, the value detected by the UPT-LF-ES assay was significantly different between positive and negative samples. Moreover, compared with the “gold standard” magnetic stirrer method, the coincidence rate of the UPT-LF-ES assay was 87.27%, and the kappa (K) coefficient was 0.7454, showing a substantial agreement. Conclusions The UPT-LF-ES assay is a useful point-of-care test (POCT) with T. spiralis in the detection of pig, which contributes to preventing human trichinellosis. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-021-04949-2.
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Affiliation(s)
- Jian Li
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, OIE Collaborating Center On Foodborne Parasites in the Asian-Pacific Region, Changchun, China
| | - Jing Ding
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, OIE Collaborating Center On Foodborne Parasites in the Asian-Pacific Region, Changchun, China
| | - Xiao-Lei Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, OIE Collaborating Center On Foodborne Parasites in the Asian-Pacific Region, Changchun, China
| | - Bin Tang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, OIE Collaborating Center On Foodborne Parasites in the Asian-Pacific Region, Changchun, China
| | - Xue Bai
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, OIE Collaborating Center On Foodborne Parasites in the Asian-Pacific Region, Changchun, China
| | - Yang Wang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, OIE Collaborating Center On Foodborne Parasites in the Asian-Pacific Region, Changchun, China
| | - Wei-Dong Qiao
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, OIE Collaborating Center On Foodborne Parasites in the Asian-Pacific Region, Changchun, China
| | - Ming-Yuan Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, OIE Collaborating Center On Foodborne Parasites in the Asian-Pacific Region, Changchun, China
| | - Xue-Lin Wang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, OIE Collaborating Center On Foodborne Parasites in the Asian-Pacific Region, Changchun, China.
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Bharadwaj M, Bengtson M, Golverdingen M, Waling L, Dekker C. Diagnosing point-of-care diagnostics for neglected tropical diseases. PLoS Negl Trop Dis 2021; 15:e0009405. [PMID: 34138846 PMCID: PMC8211285 DOI: 10.1371/journal.pntd.0009405] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Inadequate and nonintegrated diagnostics are the Achilles' heel of global efforts to monitor, control, and eradicate neglected tropical diseases (NTDs). While treatment is often available, NTDs are endemic among marginalized populations, due to the unavailability or inadequacy of diagnostic tests that cause empirical misdiagnoses. The need of the hour is early diagnosis at the point-of-care (PoC) of NTD patients. Here, we review the status quo of PoC diagnostic tests and practices for all of the 24 NTDs identified in the World Health Organization's (WHO) 2021-2030 roadmap, based on their different diagnostic requirements. We discuss the capabilities and shortcomings of current diagnostic tests, identify diagnostic needs, and formulate prerequisites of relevant PoC tests. Next to technical requirements, we stress the importance of availability and awareness programs for establishing PoC tests that fit endemic resource-limited settings. Better understanding of NTD diagnostics will pave the path for setting realistic goals for healthcare in areas with minimal resources, thereby alleviating the global healthcare burden.
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Affiliation(s)
- Mitasha Bharadwaj
- Department of Bionanoscience, Kavli Institute of Nanoscience Delft, Delft University of Technology, Delft, The Netherlands
| | - Michel Bengtson
- Department of Bionanoscience, Kavli Institute of Nanoscience Delft, Delft University of Technology, Delft, The Netherlands
| | - Mirte Golverdingen
- Department of Bionanoscience, Kavli Institute of Nanoscience Delft, Delft University of Technology, Delft, The Netherlands
| | - Loulotte Waling
- Department of Bionanoscience, Kavli Institute of Nanoscience Delft, Delft University of Technology, Delft, The Netherlands
| | - Cees Dekker
- Department of Bionanoscience, Kavli Institute of Nanoscience Delft, Delft University of Technology, Delft, The Netherlands
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Honkpehedji YJ, Adegnika AA, Dejon-Agobe JC, Zinsou JF, Mba RB, Gerstenberg J, Rakotozandrindrainy R, Rakotoarivelo RA, Rasamoelina T, Sicuri E, Schwarz NG, Corstjens PLAM, Hoekstra PT, van Dam GJ, Kreidenweiss A. Prospective, observational study to assess the performance of CAA measurement as a diagnostic tool for the detection of Schistosoma haematobium infections in pregnant women and their child in Lambaréné, Gabon: study protocol of the freeBILy clinical trial in Gabon. BMC Infect Dis 2020; 20:718. [PMID: 32993559 PMCID: PMC7523491 DOI: 10.1186/s12879-020-05445-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 09/23/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Schistosoma antigen detection in urine is a valuable diagnostic approach for schistosomiasis control programmes because of the higher sensitivity compared to parasitological methods and preferred sampling of urine over stool. Highly accurate diagnostics are important in low Schistosoma transmission areas. Pregnant women and young children could particularly benefit from antigen testing as praziquantel (PZQ) can be given to only confirmed Schistosoma cases. This prevents the unborn baby from unnecessary exposure to PZQ. We present here the protocol of a diagnostic study that forms part of the freeBILy project. The aim is to evaluate the accuracy of circulating anodic antigen (CAA) detection for diagnosis of Schistosoma haematobium infections in pregnant women and to validate CAA as an endpoint measure for anti-Schistosoma drug efficacy. The study will also investigate Schistosoma infections in infants. METHODS A set of three interlinked prospective, observational studies is conducted in Gabon. The upconverting phosphor lateral flow (UCP-LF) CAA test is the index diagnostic test that will be evaluated. The core trial, sub-study A, comprehensively evaluates the accuracy of the UCP-LF CAA urine test against a set of other Schistosoma diagnostics in a cross-sectional trial design. Women positive for S. haematobium will proceed with sub-study B and will be randomised to receive PZQ treatment immediately or after delivery followed by weekly sample collection. This approach includes comparative monitoring of CAA levels following PZQ intake and will also contribute further data for safety of PZQ administration during pregnancy. Sub-study C is a longitudinal study to determine the incidence of S. haematobium infection as well as the age for first infection in life-time. DISCUSSION The freeBILy trial in Gabon will generate a comprehensive set of data on the accuracy of the UCP-LF CAA test for the detection of S. haematobium infection in pregnant women and newborn babies and for the use of CAA as a marker to determine PZQ efficacy. Furthermore, incidence of Schistosoma infection in infants will be reported. Using the ultrasensitive diagnostics, this information will be highly relevant for Schistosoma prevalence monitoring by national control programs as well as for the development of medicaments and vaccines. TRIAL REGISTRATION The registration number of this study is NCT03779347 ( clinicaltrials.gov , date of registration: 19 December 2018).
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Affiliation(s)
- Yabo Josiane Honkpehedji
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Ayôla Akim Adegnika
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
- German Center for Infection Research (DZIF), Tübingen, Germany
| | - Jean Claude Dejon-Agobe
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
- Department of Infectious Diseases, Division of Internal Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Jeannot Fréjus Zinsou
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | - Romuald Beh Mba
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon
| | - Jacob Gerstenberg
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany
| | | | | | | | - Elisa Sicuri
- Fundación Privada Instituto de Salud Global Barcelona, Barcelona, Spain
| | | | - Paul L A M Corstjens
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands
| | - Pytsje T Hoekstra
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Govert J van Dam
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Andrea Kreidenweiss
- Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany.
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands.
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Survey and Diagnostic Challenges after Transmission-Stop: Confirming Elimination of Schistosomiasis haematobium in Morocco. J Parasitol Res 2020; 2020:9705358. [PMID: 32411424 PMCID: PMC7212323 DOI: 10.1155/2020/9705358] [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: 04/08/2019] [Revised: 07/07/2019] [Accepted: 08/06/2019] [Indexed: 12/30/2022] Open
Abstract
Clinical cases of Moroccan residents have been recorded since 2004, indicating successful interruption of transmission of S. haematobium infection at national level. The first national survey initiated in 2009 for Schistosomiasis haematobium among children born after 2004, applied diagnostic test was the HAMA-EITB, based on the Western blot technology, and molecular malacological diagnostic tools clearly confirm transmission stop. In 2015, a recent, small survey utilizing an HAI, ELISA tests and an ultrasensitive antigen test, FTCUP CAA, in a group of individual with a past history of infection. However, obviously follow-up surveys to prevent reemergency and for certification of the schistosomiasis elimination require vigilant diagnosis strategies. Here we discuss diagnosis story line in the national laboratory and challenges based on the available tools in relation to their clinical parameters (sensitivity/specificity; Sn/Sp), practicability and associated costs. When transmission stop has been achieved, survey cost and speed are likely to benefit from cost effective pooling strategies and ultrasensitive assays indicating active infection in all potential risk groups. Similarly molecular pooling strategies to monitor infections in the snail vectors.
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Lee C, Noh J, O’Neal SE, Gonzalez AE, Garcia HH, Handali S. Feasibility of a point-of-care test based on quantum dots with a mobile phone reader for detection of antibody responses. PLoS Negl Trop Dis 2019; 13:e0007746. [PMID: 31589612 PMCID: PMC6797214 DOI: 10.1371/journal.pntd.0007746] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 10/17/2019] [Accepted: 09/03/2019] [Indexed: 01/14/2023] Open
Abstract
We developed a novel and portable fluorescent sensor that integrates a lateral flow assay with a quantum dot (Qdots) label and a mobile phone reader for detection of specific antibodies in human serum. We evaluated the utility of this assay to test for antibodies to the Taenia solium rT24H antigen. It was a retrospective study by examining 112 positive human sera from patients with neurocysticercosis (NCC) including samples from patients with single viable cyst (n = 18), two or more viable cysts (n = 71), and subarachnoid (racemose) cysts (n = 23). These samples were collected from previous study subjects in Lima, Peru under an approved study protocol in Peru. The sera were made anonymous under a protocol approved by the CDC Institutional Review Board. Definitive diagnosis of the subject was established by computed-tomography and/or magnetic resonance imaging. To test the specificity of the assay, we evaluated a panel of serum samples obtained from patients with other infections (n = 24), and serum samples from persons in the United States and Egypt who had not traveled outside their country, and therefore are presumed negative for cysticercosis (n = 128). The assay specificity in the negative panel was 99% (95–100%) while assay sensitivity was 89% (79–95%) in NCC patients with two or more viable cysts. Our assay has performance characteristics similar to those of traditional platforms for the detection of NCC and shows promise as a mobile phone reader-based point-of-care test for antibody detection. Point-of-care (POC) assays are important tools in control and elimination of parasitic diseases such as lymphatic filariasis, malaria, and leishmaniasis. Most POC assays use immunochromatographic and lateral flow assay principles with gold nanoparticles as a reporter. Assays based on gold nanoparticles usually provide qualitative or semi-quantitative results and have relatively low sensitivity. However, other reporter alternatives are available, including quantum dots (Qdots), up-converting phosphor nanoparticles, and superparamagnetic particles. We developed a Qdots-based test in a lateral flow assay format with a mobile phone reader to detect antibody responses, using neurocysticercosis (NCC) as a disease model, and found that the performance is similar to the traditional platform for detecting antibody responses in subjects with NCC. The incorporation of the mobile phone reader offers the advantage of portability and adaptability for use in areas where laboratories are not immediately accessible. This novel POC assay with mobile phone reader is a feasible option for antibody responses detection.
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Affiliation(s)
- Chan Lee
- Medical College of Georgia, AU/UGA Medical Partnership, Athens, Georgia, United States of America
| | - John Noh
- Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Seth E. O’Neal
- School of Public Health, Oregon Health & Science University and Portland State University, Portland, Oregon, United States of America
| | - Armando E. Gonzalez
- School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Salamanca de Monterrico, Lima, Peru
| | - Hector H. Garcia
- Department of Microbiology and Center for Global Health, Universidad Peruana Cayetano Heredia, Lima, Peru
- Cysticercosis Unit, Instituto Nacional de Ciencias Neurologicas, Lima, Peru
| | | | - Sukwan Handali
- Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
- * E-mail:
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Hu Q, Wei Q, Zhang P, Li S, Xue L, Yang R, Wang C, Zhou L. An up-converting phosphor technology-based lateral flow assay for point-of-collection detection of morphine and methamphetamine in saliva. Analyst 2019; 143:4646-4654. [PMID: 30168551 DOI: 10.1039/c8an00651b] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Morphine (Mop) and methamphetamine (Met) are highly addictive drugs worldwide. Point-of-collection testing (POCT) for drug-of-abuse screening is important in abuse/rehabilitation clinics and law-enforcement agencies. We established an up-converting phosphor technology-based lateral flow assay (UPT-LFA) as a point-of-collection testing (POCT) method, namely Mop-UPT-LFA and Met-UPT-LFA, for the detection of morphine and methamphetamine without complicated sample pre-treatment, respectively, in saliva. The sensitivities of the Mop-UPT-LFA and the Met-UPT-LFA were 5 and 10 ng mL-1 with accurate quantitation of 5-100 ng mL-1 and 10-250 ng mL-1 for morphine and methamphetamine, respectively, for a detection time of 15 min. In reference to the detection limits of 20 and 25 ng mL-1 for morphine and methamphetamine, respectively, in the Driving Under the Influence of Drugs, Alcohol and Medicines (DRUID) program of the European Union, the percentage test/control (T/C) ratio of the UPT-LFA between 2 and 15 min reached 101% and 86%, and the UPT-LFA produced accurate qualitative results in 2 min for 100 simulated-saliva samples with the exception of a few weakly positive samples. The sample and sample treating buffer were mixed and added to the test strip, and the test was conducted 15 min later. Although we found no significant difference between the UPT-LFA quantitative test and the liquid chromatography tandem mass spectrometry (LC-MS) test, compared with the latter, the UPT-LFA was substantially faster and had higher detection efficiency. The UPT-LFA showed more accurate qualitative results than the LC-MS for 50 simulated-saliva samples. The ease of operation, high sensitivity, and accuracy of the UPT-LFA make it a valid candidate POCT method for drug-of-abuse screening.
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Affiliation(s)
- Qiushi Hu
- National Key Laboratory of Biochemical Engineering, PLA Key Laboratory of Biopharmaceutical Production & Formulation Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
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Markwalter C, Kantor AG, Moore CP, Richardson KA, Wright DW. Inorganic Complexes and Metal-Based Nanomaterials for Infectious Disease Diagnostics. Chem Rev 2019; 119:1456-1518. [PMID: 30511833 PMCID: PMC6348445 DOI: 10.1021/acs.chemrev.8b00136] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Indexed: 12/12/2022]
Abstract
Infectious diseases claim millions of lives each year. Robust and accurate diagnostics are essential tools for identifying those who are at risk and in need of treatment in low-resource settings. Inorganic complexes and metal-based nanomaterials continue to drive the development of diagnostic platforms and strategies that enable infectious disease detection in low-resource settings. In this review, we highlight works from the past 20 years in which inorganic chemistry and nanotechnology were implemented in each of the core components that make up a diagnostic test. First, we present how inorganic biomarkers and their properties are leveraged for infectious disease detection. In the following section, we detail metal-based technologies that have been employed for sample preparation and biomarker isolation from sample matrices. We then describe how inorganic- and nanomaterial-based probes have been utilized in point-of-care diagnostics for signal generation. The following section discusses instrumentation for signal readout in resource-limited settings. Next, we highlight the detection of nucleic acids at the point of care as an emerging application of inorganic chemistry. Lastly, we consider the challenges that remain for translation of the aforementioned diagnostic platforms to low-resource settings.
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Affiliation(s)
| | | | | | | | - David W. Wright
- Department of Chemistry, Vanderbilt
University, Nashville, Tennessee 37235, United States
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Zorner P, Farmer S, Alibek K. Quantifying Crop Rhizosphere Microbiome Ecology: The Next Frontier in Enhancing the Commercial Utility of Agricultural Microbes. Ind Biotechnol (New Rochelle N Y) 2018; 14:116-119. [PMID: 30083080 PMCID: PMC6077768 DOI: 10.1089/ind.2018.29132.pzo] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Paul Zorner
- Locus Agricultural Solutions, LLC, Solon, OH
| | - Sean Farmer
- Locus Agricultural Solutions, LLC, Solon, OH
| | - Ken Alibek
- Locus Agricultural Solutions, LLC, Solon, OH
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Moss DM, Handali S, Chard AN, Trinies V, Bullard S, Wiegand RE, Doumbia S, Freeman MC, Lammie PJ. Detection of Immunoglobulin G Antibodies to Taenia solium Cysticercosis Antigen Glutathione- S-Transferase-rT24H in Malian Children Using Multiplex Bead Assay. Am J Trop Med Hyg 2018; 98:1408-1412. [PMID: 29582729 DOI: 10.4269/ajtmh.17-0310] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Blood samples from 805 students attending 42 elementary schools in Mopti, Sikasso, and Koulikoro regions, and Bamako district in Mali participated in a school water, sanitation, and hygiene intervention. Immunoglobulin (Ig) G responses to several antigens/pathogens were assessed by a multiplex bead assay (MBA), and the recombinant Taenia solium T24H antigen was included. Of all students tested, 8.0% were positive to rT24H, but in some schools 25-30%. A cluster of 12 widespread school locations showed not only a relative risk of 3.23 for T. solium exposure and significantly higher IgG responses (P < 0.001) but also significantly lower elevation (P = 0.04) (m, above sea level) compared with schools outside the cluster. All schools at elevations < 425 m showed significantly higher IgG responses (P = 0.017) than schools at elevations ≥ 425 m. The MBA is an excellent serological platform that provides cost-effective opportunities to expand testing in serosurveys.
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Affiliation(s)
- Delynn M Moss
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Sukwan Handali
- Division of Parasitic Diseases and Malaria, Centers for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Anna N Chard
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia
| | - Victoria Trinies
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia
| | - Stevan Bullard
- Division Of Toxicology And Human Health Sciences, Geospatial Research, Analysis And Services Program, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Ryan E Wiegand
- Division of Parasitic Diseases and Malaria, Centers for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Seydou Doumbia
- Malaria Research and Training Center, Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Matthew C Freeman
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia
| | - Patrick J Lammie
- Division of Parasitic Diseases and Malaria, Centers for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia
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Corstjens PLAM, Hoekstra PT, de Dood CJ, van Dam GJ. Utilizing the ultrasensitive Schistosoma up-converting phosphor lateral flow circulating anodic antigen (UCP-LF CAA) assay for sample pooling-strategies. Infect Dis Poverty 2017; 6:155. [PMID: 29089064 PMCID: PMC5664425 DOI: 10.1186/s40249-017-0368-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 10/09/2017] [Indexed: 01/08/2023] Open
Abstract
Background Methodological applications of the high sensitivity genus-specific Schistosoma CAA strip test, allowing detection of single worm active infections (ultimate sensitivity), are discussed for efficient utilization in sample pooling strategies. Besides relevant cost reduction, pooling of samples rather than individual testing can provide valuable data for large scale mapping, surveillance, and monitoring. Method The laboratory-based CAA strip test utilizes luminescent quantitative up-converting phosphor (UCP) reporter particles and a rapid user-friendly lateral flow (LF) assay format. The test includes a sample preparation step that permits virtually unlimited sample concentration with urine, reaching ultimate sensitivity (single worm detection) at 100% specificity. This facilitates testing large urine pools from many individuals with minimal loss of sensitivity and specificity. The test determines the average CAA level of the individuals in the pool thus indicating overall worm burden and prevalence. When requiring test results at the individual level, smaller pools need to be analysed with the pool-size based on expected prevalence or when unknown, on the average CAA level of a larger group; CAA negative pools do not require individual test results and thus reduce the number of tests. Results Straightforward pooling strategies indicate that at sub-population level the CAA strip test is an efficient assay for general mapping, identification of hotspots, determination of stratified infection levels, and accurate monitoring of mass drug administrations (MDA). At the individual level, the number of tests can be reduced i.e. in low endemic settings as the pool size can be increased as opposed to prevalence decrease. Conclusions At the sub-population level, average CAA concentrations determined in urine pools can be an appropriate measure indicating worm burden. Pooling strategies allowing this type of large scale testing are feasible with the various CAA strip test formats and do not affect sensitivity and specificity. It allows cost efficient stratified testing and monitoring of worm burden at the sub-population level, ideally for large-scale surveillance generating hard data for performance of MDA programs and strategic planning when moving towards transmission-stop and elimination.
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Affiliation(s)
- Paul L A M Corstjens
- Department of Molecular Cell Biology, Leiden University Medical Center, P.O. Box 9600, 2300, RC, Leiden, The Netherlands.
| | - Pytsje T Hoekstra
- Department of Parasitology, Leiden University Medical Center, P.O. Box 9600, 2300, RC, Leiden, The Netherlands
| | - Claudia J de Dood
- Department of Molecular Cell Biology, Leiden University Medical Center, P.O. Box 9600, 2300, RC, Leiden, The Netherlands
| | - Govert J van Dam
- Department of Parasitology, Leiden University Medical Center, P.O. Box 9600, 2300, RC, Leiden, The Netherlands
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Mendez-Gonzalez D, Lopez-Cabarcos E, Rubio-Retama J, Laurenti M. Sensors and bioassays powered by upconverting materials. Adv Colloid Interface Sci 2017. [PMID: 28641813 DOI: 10.1016/j.cis.2017.06.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In recent years, considerable efforts have been done to better understand the peculiar emission properties of upconverting materials due to their widespread applications in different and important technological fields such as upconversion-based photoactivated cancer therapies, photoactivated drug-delivery, magnetic resonance imaging contrast agents, bioimaging. However, one of the most promising applications of upconverting materials concerns the field of sensing, due to their unique emission properties. In fact, the minimal autofluorescence, blinking, photo-bleaching, and high photostability makes them an excellent alternative to organic dyes or quantum dots. This article reviews the state-of-the-art, design, and sensing strategies of upconversion-based sensing platforms, with special attention to upconverting nanoparticles, as well as how the incorporation of these materials into pre-existing diagnostic tests and bioassays have improved their capabilities for the detection of different kinds of analytes.
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Affiliation(s)
- Diego Mendez-Gonzalez
- Department of Physical Chemistry II, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramon y Cajal, Madrid 28040, Spain
| | - Enrique Lopez-Cabarcos
- Department of Physical Chemistry II, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramon y Cajal, Madrid 28040, Spain
| | - Jorge Rubio-Retama
- Department of Physical Chemistry II, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramon y Cajal, Madrid 28040, Spain
| | - Marco Laurenti
- Department of Physical Chemistry II, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramon y Cajal, Madrid 28040, Spain.
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17
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Perspectives and challenges of photon-upconversion nanoparticles - Part II: bioanalytical applications. Anal Bioanal Chem 2017; 409:5875-5890. [DOI: 10.1007/s00216-017-0482-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 05/29/2017] [Accepted: 06/21/2017] [Indexed: 10/19/2022]
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Gómez-Morales MA, Gárate T, Blocher J, Devleesschauwer B, Smit GSA, Schmidt V, Perteguer MJ, Ludovisi A, Pozio E, Dorny P, Gabriël S, Winkler AS. Present status of laboratory diagnosis of human taeniosis/cysticercosis in Europe. Eur J Clin Microbiol Infect Dis 2017; 36:2029-2040. [PMID: 28669015 PMCID: PMC5653711 DOI: 10.1007/s10096-017-3029-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 05/23/2017] [Indexed: 11/08/2022]
Abstract
Human cysticercosis (CC) is a parasitic zoonosis caused by the larval stage (cyst) of the Taenia solium. Cysts can establish in the human central nervous system (neurocysticercosis, NCC) and other organs and tissues; they also develop in pigs, the natural intermediate host. Human taeniosis may be caused by T. solium, Taenia saginata and Taenia asiatica tapeworms; these infections are usually asymptomatic, but show a significant relevance as they perpetuate the parasites’ life cycle, and, in the case of T. solium, they are the origin of (N)CC. In European Union (EU) member states and associated countries, the occurrence of autochthonous T. solium cases is debated, and imported cases have significantly increased lately; the status of T. asiatica has been never reported, whereas T. saginata is prevalent and causes an economic impact due to condemned carcasses. Based on their effects on the EU society, the specific diagnosis of these pathologies is relevant for their prevention and control. The aims of this study were to know the diagnostic tests used in European laboratories for human taeniosis/cysticercosis by means of a questionnaire, to determine potential gaps in their detection, and to obtain preliminary data on the number of diagnosed taeniosis/CC cases.
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Affiliation(s)
- M A Gómez-Morales
- Department of Infectious Diseases, Istituto Superiore di Sanità, viale Regina Elena 299, 00161, Rome, Italy.
| | - T Gárate
- Instituto de Salud Carlos III, Centro Nacional de Microbiología, Majadahonda, 28220, Madrid, Spain.
| | - J Blocher
- Institute of Acute Neurology, Academic Teaching Hospital Feldkirch, Carinagasse 47, 6800, Feldkirch, Austria
| | - B Devleesschauwer
- Department of Public Health and Surveillance, Scientific Institute of Public Health (WIV-ISP), Rue Juliette Wytsmanstraat 14, 1050, Brussels, Belgium
| | - G S A Smit
- Department of Biomedical Sciences, Institute of Tropical Medicine, Nationalestraat 155, 2000, Antwerp, Belgium.,Faculty of Veterinary Medicine, Department of Virology, Parasitology and Immunology, Ghent University, Merelbeke, Belgium.,Institute of Health and Society (IRSS), Université Catholique de Louvain, Brussels, Belgium
| | - V Schmidt
- Department of Neurology, Klinikum rechts der Isar, Technical University Munich, Ismaninger Straße 22, 81675, Munich, Germany.,Centre for Global Health, Institute of Health and Society, University of Oslo, Kirkeveien 166, 0450, Oslo, Norway
| | - M J Perteguer
- Instituto de Salud Carlos III, Centro Nacional de Microbiología, Majadahonda, 28220, Madrid, Spain
| | - A Ludovisi
- Department of Infectious Diseases, Istituto Superiore di Sanità, viale Regina Elena 299, 00161, Rome, Italy
| | - E Pozio
- Department of Infectious Diseases, Istituto Superiore di Sanità, viale Regina Elena 299, 00161, Rome, Italy
| | - P Dorny
- Department of Biomedical Sciences, Institute of Tropical Medicine, Nationalestraat 155, 2000, Antwerp, Belgium
| | - S Gabriël
- Faculty of Veterinary Medicine, Department of Veterinary Public Health and Food Safety, Ghent University, Ghent, Belgium
| | - A S Winkler
- Department of Neurology, Klinikum rechts der Isar, Technical University Munich, Ismaninger Straße 22, 81675, Munich, Germany. .,Centre for Global Health, Institute of Health and Society, University of Oslo, Kirkeveien 166, 0450, Oslo, Norway.
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You M, Lin M, Gong Y, Wang S, Li A, Ji L, Zhao H, Ling K, Wen T, Huang Y, Gao D, Ma Q, Wang T, Ma A, Li X, Xu F. Household Fluorescent Lateral Flow Strip Platform for Sensitive and Quantitative Prognosis of Heart Failure Using Dual-Color Upconversion Nanoparticles. ACS NANO 2017; 11:6261-6270. [PMID: 28482150 DOI: 10.1021/acsnano.7b02466] [Citation(s) in RCA: 191] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Heart failure (HF) is the end-stage of cardiovascular diseases, which is associated with a high mortality rate and high readmission rate. Household early diagnosis and real-time prognosis of HF at bedside are of significant importance. Here, we developed a highly sensitive and quantitative household prognosis platform (termed as UC-LFS platform), integrating a smartphone-based reader with multiplexed upconversion fluorescent lateral flow strip (LFS). Dual-color core-shell upconversion nanoparticles (UCNPs) were synthesized as probes for simultaneously quantifying two target antigens associated with HF, i.e., brain natriuretic peptide (BNP) and suppression of tumorigenicity 2 (ST2). With the fluorescent LFS, we achieved the specific detection of BNP and ST2 antigens in spiked samples with detection limits of 5 pg/mL and 1 ng/mL, respectively, both of which are of one order lower than their clinical cutoff. Subsequently, a smartphone-based portable reader and an analysis app were developed, which could rapidly quantify the result and share prognosis results with doctors. To confirm the usage of UC-LFS platform for clinical samples, we detected 38 clinical serum samples using the platform and successfully detected the minimal concentration of 29.92 ng/mL for ST2 and 17.46 pg/mL for BNP in these clinical samples. Comparing the detection results from FDA approved clinical methods, we obtained a good linear correlation, indicating the practical reliability and stability of our developed UC-LFS platform. Therefore, the developed UC-LFS platform is demonstrated to be highly sensitive and specific for sample-to-answer prognosis of HF, which holds great potential for risk assessment and health monitoring of post-treatment patients at home.
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Affiliation(s)
| | | | - Yan Gong
- Xi'an Diandi Biotech Company , Xi'an 710049, P. R. China
| | | | | | | | | | | | - Ting Wen
- Xi'an Diandi Biotech Company , Xi'an 710049, P. R. China
| | - Yuan Huang
- Department of Cardiology, Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an 710000, Shaanxi, China
| | - Dengfeng Gao
- Department of Cardiology, Second Affiliated Hospital of Xi'an Jiaotong University , Xi'an 710000, Shaanxi, China
| | - Qiong Ma
- Department of Cardiovascular Medicine, First Affiliated Hospital of Xi'an Jiaotong University , Xi'an 710061, Shaanxi, China
| | - Tingzhong Wang
- Department of Cardiovascular Medicine, First Affiliated Hospital of Xi'an Jiaotong University , Xi'an 710061, Shaanxi, China
| | - Aiqun Ma
- Department of Cardiovascular Medicine, First Affiliated Hospital of Xi'an Jiaotong University , Xi'an 710061, Shaanxi, China
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Hernández-González A, Noh J, Perteguer MJ, Gárate T, Handali S. Comparison of T24H-his, GST-T24H and GST-Ts8B2 recombinant antigens in western blot, ELISA and multiplex bead-based assay for diagnosis of neurocysticercosis. Parasit Vectors 2017; 10:237. [PMID: 28506245 PMCID: PMC5433036 DOI: 10.1186/s13071-017-2160-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 04/25/2017] [Indexed: 01/16/2023] Open
Abstract
Background Currently, the reference standard assay for the serodiagnosis of neurocysticercosis (NCC) is the lentil lectin-bound glycoproteins/enzyme-linked immunoelectrotransfer blot (LLGP-EITB). The main disadvantage of this technique is the complexity of obtaining and purifying the LLGP extract. This could be solved by replacement with highly specific recombinant antigens from Taenia solium. Based on previous studies, we selected and produced the recombinant Ts8B2 and T24H proteins and applied them to three diagnostic techniques: western blot (WB), enzyme-linked immunosorbent assay (ELISA) and the multiplex bead-based assay (MBA). Methods The Ts8B2 and T24H cDNA sequences were expressed in a prokaryotic system and the corresponding expression products purified; three recombinant proteins were further characterized: T24H-his, GST-T24H and GST-Ts8B2. The proteins on WB, ELISA and MBA were tested against 149 sera from patients with NCC confirmed by brain imaging, 40 sera from patients with other parasitic diseases, and 131 sera from US. individuals without evidence of neurocysticercosis (clinical/serological/brain imaging). The sensitivity and specificity of each antigen by WB were calculated by counting the number of true positive, false positive, true negative and false negative results. Using the receiver operating characteristic (ROC) curves, the cut-off values for the ELISA and MBA were established as well as the sensitivity and specificity of each assay. Results All three antigens showed a high sensitivity on WB in active NCC cases with two or more viable cysts and low sensitivity for cases with single viable cyst or calcified lesions and inactive NCC. WB showed the highest specificity and sensitivity out of the three diagnostic techniques. The recombinant T24H-his was the best diagnostic reagent in WB (100% sensitivity, 99.4% specificity), exhibiting similar results to the LLGP-EITB, against the same panel of NCC sera. The GST-T24H antigen worked better than the others in ELISA and MBA protocols (88.3 and 96.1% sensitivity, respectively and 96.5% specificity). Conclusions The sensitivity and specificity that we obtained were similar to results from a previous study using a similar recombinant antigen (rT24H), suggesting that recombinant antigens may be good alternatives to crude extracts in a variety of diagnostic techniques. Furthermore, these antigens can be applied in the development of point-of-care tests which would be useful in NCC field studies.
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Affiliation(s)
- Ana Hernández-González
- Helminth Unit, Parasitology Department, Centro Nacional de Microbiología, Instituto de Salud Carlos III , Crtra. Majadahonda-Pozuelo, km 2.2, 28220, Majadahonda, 28220, Madrid, Spain.
| | - John Noh
- Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, 30329, GA, USA
| | - María Jesús Perteguer
- Helminth Unit, Parasitology Department, Centro Nacional de Microbiología, Instituto de Salud Carlos III , Crtra. Majadahonda-Pozuelo, km 2.2, 28220, Majadahonda, 28220, Madrid, Spain
| | - Teresa Gárate
- Helminth Unit, Parasitology Department, Centro Nacional de Microbiología, Instituto de Salud Carlos III , Crtra. Majadahonda-Pozuelo, km 2.2, 28220, Majadahonda, 28220, Madrid, Spain
| | - Sukwan Handali
- Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, 30329, GA, USA
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21
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Xiao K, Wang K, Qin W, Hou Y, Lu W, Xu H, Wo Y, Cui D. Use of quantum dot beads-labeled monoclonal antibody to improve the sensitivity of a quantitative and simultaneous immunochromatographic assay for neuron specific enolase and carcinoembryonic antigen. Talanta 2016; 164:463-469. [PMID: 28107959 DOI: 10.1016/j.talanta.2016.12.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 11/30/2016] [Accepted: 12/04/2016] [Indexed: 01/11/2023]
Abstract
Detection of multiplex tumor markers was of great importance for cancer diagnosis. Immunochromatographic test strip (ICTS) was the most frequently-used point-of-care detection means. Herein, a convenient and fast method for simultaneous quantitative detection of neuron specific enolase (NSE) and carcinoembryonic antigen (CEA) was developed based on ICTS using quantum dot beads (QBs) as marking material. Good monodispersity, high colloidal stability and carboxyl-modified (COOH-) QBs were used. For this method, two test lines were applied to the NC membrane for simultaneous analysis of CEA and NSE respectively. The ideal limit of CEA and NSE detection was 0.0378ng/mL and 0.0426ng/mL with scarcely any cross-reactivity. Moreover, the fluorescent signal intensity of the nitrocellulose membrane could be easily read out in the cooperation of the "Handing" system without professional operators. The possible clinical utilization of this platform was demonstrated by detecting 100 clinic human serums. The result showed that the platform had sensitivity of 99% and 97% for CEA and NSE, while the specificity was 97% and 100% respectively. Our results indicated that the QBs based ICTS not only owning the ability of sensitive and specific simultaneous detection of CEA and NSE, but also showing the potential in developing this ICTS into a routine part of early lung cancer diagnosis.
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Affiliation(s)
- Kun Xiao
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Kan Wang
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment Instrument, Shanghai 200240, China.
| | - Weijian Qin
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Yafei Hou
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Wenting Lu
- Zhujiang Hospital, Southern Medical University, 253 Gongye Road, Guangzhou, Guangdong 510280, China.
| | - Hao Xu
- School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Yan Wo
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai 200011, China.
| | - Daxiang Cui
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment Instrument, Shanghai 200240, China.
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22
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Yao Y, Guo W, Zhang J, Wu Y, Fu W, Liu T, Wu X, Wang H, Gong X, Liang XJ, Chang J. Reverse Fluorescence Enhancement and Colorimetric Bimodal Signal Readout Immunochromatography Test Strip for Ultrasensitive Large-Scale Screening and Postoperative Monitoring. ACS APPLIED MATERIALS & INTERFACES 2016; 8:22963-22970. [PMID: 27547984 DOI: 10.1021/acsami.6b08445] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ultrasensitive and quantitative fast screening of cancer biomarkers by immunochromatography test strip (ICTS) is still challenging in clinic. The gold nanoparticles (NPs) based ICTS with colorimetric readout enables a quick spectrum screening but suffers from nonquantitative performance; although ICTS with fluorescence readout (FICTS) allows quantitative detection, its sensitivity still deserves more efforts and attentions. In this work, by taking advantages of colorimetric ICTS and FICTS, we described a reverse fluorescence enhancement ICTS (rFICTS) with bimodal signal readout for ultrasensitive and quantitative fast screening of carcinoembryonic antigen (CEA). In the presence of target, gold NPs aggregation in T line induced colorimetric readout, allowing on-the-spot spectrum screening in 10 min by naked eye. Meanwhile, the reverse fluorescence enhancement signal enabled more accurately quantitative detection with better sensitivity (5.89 pg/mL for CEA), which is more than 2 orders of magnitude lower than that of the conventional FICTS. The accuracy and stability of the rFICTS were investigated with more than 100 clinical serum samples for large-scale screening. Furthermore, this rFICTS also realized postoperative monitoring by detecting CEA in a patient with colon cancer and comparing with CT imaging diagnosis. These results indicated this rFICTS is particularly suitable for point-of-care (POC) diagnostics in both resource-rich and resource-limited settings.
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Affiliation(s)
- Yingyi Yao
- School of Materials Science and Engineering, School of Life Sciences, Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University , Tianjin 300072, China
| | - Weisheng Guo
- Laboratory of Controllable Nanopharmaceuticals, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology , Beijing 100190, China
| | - Jian Zhang
- School of Materials Science and Engineering, School of Life Sciences, Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University , Tianjin 300072, China
| | - Yudong Wu
- School of Materials Science and Engineering, School of Life Sciences, Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University , Tianjin 300072, China
| | - Weihua Fu
- Department of General Surgery, Tianjin Medical University General Hospital , Tianjin 300052, China
| | - Tingting Liu
- Department of General Surgery, Tianjin Medical University General Hospital , Tianjin 300052, China
| | - Xiaoli Wu
- School of Materials Science and Engineering, School of Life Sciences, Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University , Tianjin 300072, China
| | - Hanjie Wang
- School of Materials Science and Engineering, School of Life Sciences, Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University , Tianjin 300072, China
| | - Xiaoqun Gong
- School of Materials Science and Engineering, School of Life Sciences, Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University , Tianjin 300072, China
| | - Xing-Jie Liang
- Laboratory of Controllable Nanopharmaceuticals, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology , Beijing 100190, China
| | - Jin Chang
- School of Materials Science and Engineering, School of Life Sciences, Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University , Tianjin 300072, China
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23
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Huttunen RJ, Näreoja T, Mariani L, Härmä H. Residual nanoparticle label immunosensor for wash-free C-reactive protein detection in blood. Biosens Bioelectron 2016; 83:54-9. [DOI: 10.1016/j.bios.2016.04.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 03/23/2016] [Accepted: 04/12/2016] [Indexed: 01/30/2023]
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24
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Jiang T, Song Y, Du D, Liu X, Lin Y. Detection of p53 Protein Based on Mesoporous Pt–Pd Nanoparticles with Enhanced Peroxidase-like Catalysis. ACS Sens 2016. [DOI: 10.1021/acssensors.6b00019] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tao Jiang
- Key
Laboratory of Animal Virology of Ministry of Agriculture, State Key
Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research
Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu 730046, China
| | | | - Dan Du
- Key
Laboratory of Pesticides and Chemical Biology, Ministry of Education,
College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Xiangtao Liu
- Key
Laboratory of Animal Virology of Ministry of Agriculture, State Key
Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research
Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu 730046, China
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25
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Integration of Multiplex Bead Assays for Parasitic Diseases into a National, Population-Based Serosurvey of Women 15-39 Years of Age in Cambodia. PLoS Negl Trop Dis 2016; 10:e0004699. [PMID: 27136913 PMCID: PMC4854427 DOI: 10.1371/journal.pntd.0004699] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 04/18/2016] [Indexed: 11/19/2022] Open
Abstract
Collection of surveillance data is essential for monitoring and evaluation of public health programs. Integrated collection of household-based health data, now routinely carried out in many countries through demographic health surveys and multiple indicator surveys, provides critical measures of progress in health delivery. In contrast, biomarker surveys typically focus on single or related measures of malaria infection, HIV status, vaccination coverage, or immunity status for vaccine-preventable diseases (VPD). Here we describe an integrated biomarker survey based on use of a multiplex bead assay (MBA) to simultaneously measure antibody responses to multiple parasitic diseases of public health importance as part of a VPD serological survey in Cambodia. A nationally-representative cluster-based survey was used to collect serum samples from women of child-bearing age. Samples were tested by MBA for immunoglobulin G antibodies recognizing recombinant antigens from Plasmodium falciparum and P. vivax, Wuchereria bancrofti, Toxoplasma gondii, Taenia solium, and Strongyloides stercoralis. Serologic IgG antibody results were useful both for generating national prevalence estimates for the parasitic diseases of interest and for confirming the highly focal distributions of some of these infections. Integrated surveys offer an opportunity to systematically assess the status of multiple public health programs and measure progress toward Millennium Development Goals. In 2012 a comprehensive national serosurvey to assess immunity to vaccine preventable diseases such as polio, rubella, measles, and tetanus was conducted among women of child bearing age in Cambodia. We were able to test this sample set using a multiplex bead assay in order to measure specific antibody responses to the parasites that cause malaria, toxoplasmosis, lymphatic filariasis, cysticercosis, and strongyloidiasis. National prevalence estimates generated from the serologic data show widespread exposure (>45% positive) to the soil transmitted nematode worm, Strongyloides stercoralis. In contrast, <5% of women were positive for antibodies to P. falciparum malaria, P. vivax malaria, and lymphatic filariasis, and antibody-positive women were mainly found in the North region of the country. Women who were positive for antibodies to Toxoplasma gondii and Taenia solium (5.8% and 2.6% of the population, respectively) were not clustered in any particular geographic region. With this study we have shown how the integration of a multiplex assay into a national serosurvey can provide useful information on the prevalence and distributions of medically important parasitic infections.
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26
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Singhi P, Saini AG. Pediatric neurocysticercosis: current challenges and future prospects. Pediatric Health Med Ther 2016; 7:5-16. [PMID: 29388588 PMCID: PMC5683283 DOI: 10.2147/phmt.s79058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Neurocysticercosis (NCC) is an acquired infection of the nervous system caused by encysted larvae of Taenia solium. It is a major cause of epilepsy in the tropics and the commonest cause of focal seizures in North Indian children. T. solium teniasis-cysticercosis is considered a parasitic "Neglected Tropical Diseases" endemic throughout Southeast Asia. NCC in children has pleomorphic manifestations depending on the location, number and viability of the cysts, and host response. Even with advancing knowledge of the disease manifestations, many aspects related to diagnosis and treatment, particularly in children, still remain controversial and pose challenges to clinical practice. There is no gold standard test to diagnose NCC and the management recommendations are still emerging. This review provides an overview of diagnosis of NCC in children and its management with special focus on current challenges and future prospects.
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Affiliation(s)
- Pratibha Singhi
- Department of Pediatrics, Pediatric Neurology and Neurodevelopment Unit, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Arushi Gahlot Saini
- Department of Pediatrics, Pediatric Neurology and Neurodevelopment Unit, Advanced Pediatrics Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India
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27
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Huang X, Aguilar ZP, Xu H, Lai W, Xiong Y. Membrane-based lateral flow immunochromatographic strip with nanoparticles as reporters for detection: A review. Biosens Bioelectron 2016; 75:166-80. [DOI: 10.1016/j.bios.2015.08.032] [Citation(s) in RCA: 271] [Impact Index Per Article: 33.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Revised: 08/14/2015] [Accepted: 08/17/2015] [Indexed: 01/30/2023]
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28
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Hanon JB, Vandenberge V, Deruelle M, De Leeuw I, De Clercq K, Van Borm S, Koenen F, Liu L, Hoffmann B, Batten CA, Zientara S, Breard E, Van der Stede Y. Inter-laboratory evaluation of the performance parameters of a Lateral Flow Test device for the detection of Bluetongue virus-specific antibodies. J Virol Methods 2015; 228:140-50. [PMID: 26687976 DOI: 10.1016/j.jviromet.2015.12.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 11/23/2015] [Accepted: 12/01/2015] [Indexed: 12/01/2022]
Abstract
Bluetongue (BT) is a viral vector-borne disease affecting domestic and wild ruminants worldwide. In this study, a commercial rapid immuno-chromatographic method or Lateral Flow Test (LFT) device, for the detection of BT virus-specific antibodies in animal serum, was evaluated in an international inter-laboratory proficiency test. The evaluation was done with sera samples of variable background (ruminant species, serotype, field samples, experimental infections, vaccinated animals). The diagnostic sensitivity was 100% (95% C.I. [90.5-100]) and the diagnostic specificity was 95.2% (95% C.I. [76.2-99.9]). The repeatability (accordance) and reproducibility (concordance) were 100% for seropositive samples but were lower for two of the seronegative samples (45% and 89% respectively). The analytical sensitivity, evaluated by testing positive sera at increasing dilutions was better for the BT LFT compared to some commercial ELISAs. Seroconversion of an infected sheep was detected at 4 days post infection. Analytical specificity was impaired by cross-reactions observed with some of the samples seropositive for Epizootic Haemorrhagic Disease Virus (EHDV). The agreement (Cohen's kappa) between the LFT and a commercial BT competitive ELISA was 0.79 (95% CI [0.62-0.95]). Based on these results, it can be concluded that the BT LFT device is a rapid and sensitive first-line serological test that can be used in the field, especially in areas endemic for the disease where there is a lack of diagnostic facilities.
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Affiliation(s)
- Jean-Baptiste Hanon
- Veterinary and Agrochemical Research Centre (CODA-CERVA), Coordination of the Veterinary Diagnostic, Epidemiology and Risk Analysis Unit (CDV-ERA), Groeselenberg 99, 1180 Brussels, Belgium.
| | - Valerie Vandenberge
- Veterinary and Agrochemical Research Centre (CODA-CERVA), Coordination of the Veterinary Diagnostic, Epidemiology and Risk Analysis Unit (CDV-ERA), Groeselenberg 99, 1180 Brussels, Belgium
| | - Matthias Deruelle
- Veterinary and Agrochemical Research Centre (CODA-CERVA), Coordination of the Veterinary Diagnostic, Epidemiology and Risk Analysis Unit (CDV-ERA), Groeselenberg 99, 1180 Brussels, Belgium
| | - Ilse De Leeuw
- Veterinary and Agrochemical Research Centre (CODA-CERVA), Vesicular and Exotic Diseases Unit, National Reference Laboratory for Bluetongue, Groeselenberg 99, 1180 Brussels, Belgium
| | - Kris De Clercq
- Veterinary and Agrochemical Research Centre (CODA-CERVA), Vesicular and Exotic Diseases Unit, National Reference Laboratory for Bluetongue, Groeselenberg 99, 1180 Brussels, Belgium
| | - Steven Van Borm
- Veterinary and Agrochemical Research Centre (CODA-CERVA), Molecular Platform Unit, Groeselenberg 99, 1180 Brussels, Belgium
| | - Frank Koenen
- Veterinary and Agrochemical Research Centre (CODA-CERVA), Coordination of the Veterinary Diagnostic, Epidemiology and Risk Analysis Unit (CDV-ERA), Groeselenberg 99, 1180 Brussels, Belgium
| | - Lihong Liu
- National Veterinary Institute (SVA), Department of Virology, Immunobiology and Parasitology (VIP), SE-751 89 Uppsala, Sweden
| | - Bernd Hoffmann
- Friedrich-Loeffler-Institut (FLI), Institute of Diagnostic Virology, Südufer 10, 17493 Greifswald-Insel Riems, Germany
| | - Carrie Anne Batten
- The Pirbright Institute, Non Vesicular Reference Laboratory, Ash Road, Pirbright, Woking GU240NF, United Kingdom
| | - Stéphan Zientara
- Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), UPE, UMR Anses, INRA, ENVA, 14 rue Pierre et Marie Curie, laboratoire de santé animale, Maisons-Alfort, France
| | - Emmanuel Breard
- Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), UPE, UMR Anses, INRA, ENVA, 14 rue Pierre et Marie Curie, laboratoire de santé animale, Maisons-Alfort, France
| | - Yves Van der Stede
- Veterinary and Agrochemical Research Centre (CODA-CERVA), Coordination of the Veterinary Diagnostic, Epidemiology and Risk Analysis Unit (CDV-ERA), Groeselenberg 99, 1180 Brussels, Belgium; Ghent University, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Salisburylaan 133, 9820 Merelbeke, Belgium
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29
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Sutherland JS, Mendy J, Gindeh A, Walzl G, Togun T, Owolabi O, Donkor S, Ota MO, Kon Fat ET, Ottenhoff THM, Geluk A, Corstjens PLAM. Use of lateral flow assays to determine IP-10 and CCL4 levels in pleural effusions and whole blood for TB diagnosis. Tuberculosis (Edinb) 2015; 96:31-6. [PMID: 26786652 DOI: 10.1016/j.tube.2015.10.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 10/22/2015] [Accepted: 10/26/2015] [Indexed: 11/27/2022]
Abstract
One of the key problems in combating TB is the lack of fast and accurate diagnostic tests that are affordable and easy to use in resource-limited settings. We have used a field-friendly up-converting phosphor (UCP) reporter technology in a lateral flow (LF) based test for the diagnosis of respiratory infections. In this study we analysed samples obtained from patients presenting with symptoms suggestive of TB but prior to confirmation by microbiology in The Gambia. Following clinical and microbiological evaluation they were classified as either having TB or other respiratory disorder (ORD). Analysis of blood was performed for those with pulmonary TB and pleural fluid for those with pleural TB. UCP-LF test for detection and quantitation of IP-10 and CCL4 were used being the two chemokine markers that have been shown to increase in active TB disease. UCP-LF test accurately determined concentrations of both markers as compared to ELISA and multiplex cytokine array. However, only IP-10 could discriminate between TB and ORD, and this was significantly enhanced by analysing the site of infection (pleural fluid), which showed 92% correct classification. Future work will assess the use of multiple markers to increase diagnostic accuracy.
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Affiliation(s)
| | - Joseph Mendy
- Vaccines & Immunity, Medical Research Council Unit, Gambia
| | - Awa Gindeh
- Vaccines & Immunity, Medical Research Council Unit, Gambia
| | - Gerhard Walzl
- DST/NRF Centre of Excellence for Biomedical Tuberculosis Research and MRC Centre for Molecular and Cellular Biology, Division of Molecular Biology and Human Genetics, Dept of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Toyin Togun
- Vaccines & Immunity, Medical Research Council Unit, Gambia
| | | | - Simon Donkor
- Vaccines & Immunity, Medical Research Council Unit, Gambia
| | - Martin O Ota
- Vaccines & Immunity, Medical Research Council Unit, Gambia
| | - Elisa Tjon Kon Fat
- Leiden University Medical Center, Dept. Infectious Diseases, The Netherlands
| | - Tom H M Ottenhoff
- Leiden University Medical Center, Dept. Infectious Diseases, The Netherlands
| | - Annemieke Geluk
- Leiden University Medical Center, Dept. Infectious Diseases, The Netherlands
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30
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Sajid M, Kawde AN, Daud M. Designs, formats and applications of lateral flow assay: A literature review. JOURNAL OF SAUDI CHEMICAL SOCIETY 2015. [DOI: 10.1016/j.jscs.2014.09.001] [Citation(s) in RCA: 444] [Impact Index Per Article: 49.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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31
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Jiang T, Song Y, Wei T, Li H, Du D, Zhu MJ, Lin Y. Sensitive detection of Escherichia coli O157:H7 using Pt-Au bimetal nanoparticles with peroxidase-like amplification. Biosens Bioelectron 2015; 77:687-94. [PMID: 26496223 DOI: 10.1016/j.bios.2015.10.017] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 09/15/2015] [Accepted: 10/06/2015] [Indexed: 01/06/2023]
Abstract
Escherichia coli O157:H7 is one of the most notorious foodborne pathogens causing serious disease at low infectious dose. To protect consumers from deadly foodborne E. coli O157:H7 infection, it is vital to develop a simple, reliable, sensitive and rapid method which can detect low level E. coli O157:H7 in foods at real-time. We have successfully developed a novel immunochromatographic assay (ICA) with enhanced sensitivity for the visual and quantitative detection of E. coli O157:H7. Sandwich-type immunoreactions were performed on the ICA, and Pt-Au bimetal nanoparticles (NPs) were accumulated on the test zone. The signal amplification is based on Pt-Au bimetal NPs possessing high peroxidase activity toward 3,3',5,5'-tetramethylbenzidine, which can produce characteristic colored bands and thus, enable visual detection of E. coli O157:H7 without instrumentation. The innovative aspect of this approach lies in the visualization and quantification of target pathogen through the detection of color intensity. Due to the excellent peroxidase activity of Pt-Au NPs, they emit strong visible color intensity in less than 1 min for visual observation even in low concentration range of E. coli O157:H7. Quantification was performed using a commercial assay meter. The sensitivity was improved more than 1000-folds compared to the conventional test strip based on colored gold-colloids. Although the feasibility was demonstrated using E. coli O157:H7 as a model analyte, this approach could be easily developed to be a universal signal amplification technique and applied to detection of a wide variety of foodborne pathogens and protein biomarkers.
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Affiliation(s)
- Tao Jiang
- School of Mechanical and Material Engineering, Washington State University, Pullman, WA 99164, United States; Key Laboratory of Animal Virology of Ministry of Agriculture, State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu 730046, China
| | - Yang Song
- School of Mechanical and Material Engineering, Washington State University, Pullman, WA 99164, United States
| | - Tianxiang Wei
- School of Mechanical and Material Engineering, Washington State University, Pullman, WA 99164, United States
| | - He Li
- School of Mechanical and Material Engineering, Washington State University, Pullman, WA 99164, United States
| | - Dan Du
- School of Mechanical and Material Engineering, Washington State University, Pullman, WA 99164, United States; Paul G. Allen School for Global Animal Health, Washington State University, Pullman, WA 99164, United States
| | - Mei-Jun Zhu
- School of Food Science, Washington State University, Pullman, WA 99164, United States.
| | - Yuehe Lin
- School of Mechanical and Material Engineering, Washington State University, Pullman, WA 99164, United States; Paul G. Allen School for Global Animal Health, Washington State University, Pullman, WA 99164, United States.
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32
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Juntunen E, Arppe R, Kalliomäki L, Salminen T, Talha SM, Myyryläinen T, Soukka T, Pettersson K. Effects of blood sample anticoagulants on lateral flow assays using luminescent photon-upconverting and Eu(III) nanoparticle reporters. Anal Biochem 2015; 492:13-20. [PMID: 26408349 DOI: 10.1016/j.ab.2015.09.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 09/03/2015] [Accepted: 09/10/2015] [Indexed: 12/27/2022]
Abstract
Many quantitative and semiquantitative lateral flow (LF) assays have been introduced for clinical analytes such as biomarkers for cancer or acute myocardial infarction (AMI). Various detection technologies involving quantitative analyzing devices have been reported to have sufficient analytical sensitivity and quantification capability for clinical point-of-care tests. Fluorescence-based detection technologies such as quantum dots, Eu(III) nanoparticles, and photon-upconverting nanoparticles (UCNPs) have been introduced as promising solutions for point-of-care devices because of their high detectability by optical sensors. Lateral flow assays can be used for various sample types, e.g., urine, saliva, cerebrospinal fluid, and blood. This study focuses on the properties of serum and plasma because of their relevance in cancer and AMI diagnostics. The limit of detection was compared in LF assays having Eu(III) nanoparticles or UCNPs as reporters and the antibody configurations for two different analytes (prostate-specific antigen and cardiac troponin I (cTnI)). The results indicate a significant effect of anticoagulants in venipuncture tubes. The samples in K3EDTA tubes resulted in significant interference by decreased reporter particle mobility, and thus the limit of detection was up to eightfold less sensitive compared to serum samples. Despite the matrix interference in the cTnI assay with UCNP reporters, limits of detection of 41 ng/L with serum and 66 ng/L with the Li-heparin sample were obtained.
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Affiliation(s)
- Etvi Juntunen
- Department of Biotechnology, University of Turku, 20520 Turku, Finland.
| | - Riikka Arppe
- Department of Biotechnology, University of Turku, 20520 Turku, Finland
| | - Laura Kalliomäki
- Department of Biotechnology, University of Turku, 20520 Turku, Finland
| | - Teppo Salminen
- Department of Biotechnology, University of Turku, 20520 Turku, Finland
| | - Sheikh M Talha
- Department of Biotechnology, University of Turku, 20520 Turku, Finland
| | - Tiina Myyryläinen
- Department of Biotechnology, University of Turku, 20520 Turku, Finland
| | - Tero Soukka
- Department of Biotechnology, University of Turku, 20520 Turku, Finland
| | - Kim Pettersson
- Department of Biotechnology, University of Turku, 20520 Turku, Finland
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33
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Corstjens PLAM, Tjon Kon Fat EM, de Dood CJ, van der Ploeg-van Schip JJ, Franken KLMC, Chegou NN, Sutherland JS, Howe R, Mihret A, Kassa D, van der Vyver M, Sheehama J, Simukonda F, Mayanja-Kizza H, Ottenhoff THM, Walzl G, Geluk A. Multi-center evaluation of a user-friendly lateral flow assay to determine IP-10 and CCL4 levels in blood of TB and non-TB cases in Africa. Clin Biochem 2015; 49:22-31. [PMID: 26285074 DOI: 10.1016/j.clinbiochem.2015.08.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 07/28/2015] [Accepted: 08/12/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Multi-center evaluation of a user-friendly lateral flow test for detection of IP-10 and CCL4 levels in Mycobacterium tuberculosis (Mtb) antigen-stimulated whole blood samples from tuberculosis (TB) suspects. DESIGN AND METHODS A quantitative lateral flow (LF)-based assay platform was applied to detect chemokines IP-10 and CCL4. Chemokine quantitation was achieved using interference-free, fluorescent up-converting phosphor (UCP) labels. The new assays allowed worldwide shipping and storage without requiring a cold chain and were tested at seven institutes (including Ethiopia, Malawi, The Gambia, South Africa, Uganda and Namibia) employing portable lightweight readers for detection of the UCP label. At each site, clinical samples, confirmed TB and non-TB (i.e. other respiratory diseases (ORD)) cases, were collected and analyzed simultaneously with quality control (QC) human IP-10 or CCL4 standards. RESULTS Performance of the UCP-LF assay in Africa using QC standards indicated high robustness allowing quantitative detection between 100 and 100,000pg/mL. The optimized assays allowed successful determination of chemokine levels using 1μL whole blood sample from the locally recruited subjects with TB or ORD. CONCLUSION This African multi-center trial further demonstrated the applicability of the low-tech and robust UCP-LF platform as a convenient quantitative assay for chemokine detection in whole blood. Ambient shipping and storage of all assay reagents and the availability of lightweight standalone readers were acknowledged as essential requirement for test implementation in particular in remote and resource-limited settings.
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Affiliation(s)
- Paul L A M Corstjens
- Department of Molecular Cell Biology, Leiden University Medical Center, The Netherlands.
| | - Elisa M Tjon Kon Fat
- Department of Molecular Cell Biology, Leiden University Medical Center, The Netherlands
| | - Claudia J de Dood
- Department of Molecular Cell Biology, Leiden University Medical Center, The Netherlands
| | | | - Kees L M C Franken
- Department of Infectious Diseases, Leiden University Medical Center, The Netherlands
| | - Novel N Chegou
- DST/NRF Centre of Excellence for Biomedical Tuberculosis Research and SAMRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Stellenbosch University, Cape Town, South Africa
| | | | - Rawleigh Howe
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Adane Mihret
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Desta Kassa
- Ethiopian Health and Nutrition Research Institute, Addis Ababa, Ethiopia
| | | | | | | | | | - Tom H M Ottenhoff
- Department of Infectious Diseases, Leiden University Medical Center, The Netherlands
| | - Gerhard Walzl
- DST/NRF Centre of Excellence for Biomedical Tuberculosis Research and SAMRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Stellenbosch University, Cape Town, South Africa
| | - Annemieke Geluk
- Department of Infectious Diseases, Leiden University Medical Center, The Netherlands
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