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Novel and dengue and diagnostic

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https://www.readbyqxmd.com/read/28185868/dengue-knowledge-gaps-unmet-needs-and-research-priorities
#1
REVIEW
Leah C Katzelnick, Josefina Coloma, Eva Harris
Dengue virus is a mosquito-borne pathogen that causes up to about 100 million cases of disease each year, placing a major public health, social, and economic burden on numerous low-income and middle-income countries. Major advances by investigators, vaccine developers, and affected communities are revealing new insights and enabling novel interventions and approaches to dengue prevention and control. Such research has highlighted further questions about both the basic understanding of dengue and efforts to develop new tools...
February 6, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28152487/a-heparin-functionalized-carbon-nanotube-based-affinity-biosensor-for-dengue-virus
#2
Daniel Wasik, Ashok Mulchandani, Marylynn V Yates
Dengue virus is an arthropod-borne virus transmitted primarily by Aedes mosquitos and is major cause of disease in tropical and subtropical regions. Colloquially known as Dengue Fever, infection can cause hemorrhagic disorders and death in humans and non-human primates. We report a novel electronic biosensor based on a single-walled carbon nanotube network chemiresistive transducer that is functionalized with heparin for low-cost, label-free, ultra-sensitive, and rapid detection of whole dengue virus (DENV)...
January 10, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28152075/pathogen-specific-deep-sequence-coupled-biopanning-a-method-for-surveying-human-antibody-responses
#3
Kathryn M Frietze, Juan M Pascale, Brechla Moreno, Bryce Chackerian, David S Peabody
Identifying the targets of antibody responses during infection is important for designing vaccines, developing diagnostic and prognostic tools, and understanding pathogenesis. We developed a novel deep sequence-coupled biopanning approach capable of identifying the protein epitopes of antibodies present in human polyclonal serum. Here, we report the adaptation of this approach for the identification of pathogen-specific epitopes recognized by antibodies elicited during acute infection. As a proof-of-principle, we applied this approach to assessing antibodies to Dengue virus (DENV)...
2017: PloS One
https://www.readbyqxmd.com/read/28006649/serodiagnosis-of-zika-virus-zikv-infections-by-a-novel-ns1-based-elisa-devoid-of-cross-reactivity-with-dengue-virus-antibodies-a-multicohort-study-of-assay-performance-2015-to-2016
#4
Katja Steinhagen, Christian Probst, Christiane Radzimski, Jonas Schmidt-Chanasit, Petra Emmerich, Marjan van Esbroeck, Janke Schinkel, Martin P Grobusch, Abraham Goorhuis, Jens M Warnecke, Erik Lattwein, Lars Komorowski, Andrea Deerberg, Sandra Saschenbrecker, Winfried Stöcker, Wolfgang Schlumberger
Serological diagnosis of Zika virus (ZIKV) infections is challenging due to high cross-reactivity between flaviviruses. We evaluated the diagnostic performance of a novel anti-ZIKV ELISA based on recombinant ZIKV non-structural protein 1 (NS1). Assay sensitivity was examined using sera from 27 patients with reverse transcription (RT)-PCR-confirmed and 85 with suspected ZIKV infection. Specificity was analysed using sera from 1,015 healthy individuals. Samples from 252 patients with dengue virus (n = 93), West Nile virus (n = 34), Japanese encephalitis virus (n = 25), chikungunya virus (n = 19) or Plasmodium spp...
December 15, 2016: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/27553703/state-of-the-art-monitoring-in-treatment-of-dengue-shock-syndrome-a-case-series
#5
Steven L Moulton, Jane Mulligan, Anon Srikiatkhachorn, Siripen Kalayanarooj, Greg Z Grudic, Sharone Green, Robert V Gibbons, Gary W Muniz, Carmen Hinojosa-Laborde, Alan L Rothman, Stephen J Thomas, Victor A Convertino
BACKGROUND: Early recognition and treatment of circulatory volume loss is essential in the clinical management of dengue viral infection. We hypothesized that a novel computational algorithm, originally developed for noninvasive monitoring of blood loss in combat casualties, could: (1) indicate the central volume status of children with dengue during the early stages of "shock"; and (2) track fluid resuscitation status. METHODS: Continuous noninvasive photoplethysmographic waveforms were collected over a 5-month period from three children of Thai ethnicity with clinical suspicion of dengue...
August 24, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27490379/two-color-lateral-flow-assay-for-multiplex-detection-of-causative-agents-behind-acute-febrile-illnesses
#6
Seoho Lee, Saurabh Mehta, David Erickson
Acute undifferentiated febrile illnesses (AFIs) represent a significant health burden worldwide. AFIs can be caused by infection with a number of different pathogens including dengue (DENV) and Chikungunya viruses (CHIKV), and their differential diagnosis is critical to the proper patient management. While rapid diagnostic tests (RDTs) for the detection of IgG/IgM against a single pathogen have played a significant role in enabling the rapid diagnosis in the point-of-care settings, the state-of-the-art assay scheme is incompatible with the multiplex detection of IgG/IgM to more than one pathogen...
September 6, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27160350/rapid-low-cost-detection-of-zika-virus-using-programmable-biomolecular-components
#7
Keith Pardee, Alexander A Green, Melissa K Takahashi, Dana Braff, Guillaume Lambert, Jeong Wook Lee, Tom Ferrante, Duo Ma, Nina Donghia, Melina Fan, Nichole M Daringer, Irene Bosch, Dawn M Dudley, David H O'Connor, Lee Gehrke, James J Collins
The recent Zika virus outbreak highlights the need for low-cost diagnostics that can be rapidly developed for distribution and use in pandemic regions. Here, we report a pipeline for the rapid design, assembly, and validation of cell-free, paper-based sensors for the detection of the Zika virus RNA genome. By linking isothermal RNA amplification to toehold switch RNA sensors, we detect clinically relevant concentrations of Zika virus sequences and demonstrate specificity against closely related Dengue virus sequences...
May 19, 2016: Cell
https://www.readbyqxmd.com/read/27159058/using-rapid-diagnostic-tests-as-a-source-of-viral-rna-for-dengue-serotyping-by-rt-pcr-a-novel-epidemiological-tool
#8
Manivanh Vongsouvath, Koukeo Phommasone, Onanong Sengvilaipaseuth, Nathamon Kosoltanapiwat, Narisara Chantratita, Stuart D Blacksell, Sue J Lee, Xavier de Lamballerie, Mayfong Mayxay, Sommay Keomany, Paul N Newton, Audrey Dubot-Pérès
BACKGROUND: Dengue virus infection causes major public health problems in tropical and subtropical areas. In many endemic areas, including the Lao PDR, inadequate access to laboratory facilities is a major obstacle to surveillance and study of dengue epidemiology. Filter paper is widely used for blood collection for subsequent laboratory testing for antibody and nucleic acid detection. For the first time, we demonstrate that dengue viral RNA can be extracted from dengue rapid diagnostic tests (RDT) and then submitted to real-time RT-PCR for serotyping...
May 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27126052/high-specificity-of-a-novel-zika-virus-elisa-in-european-patients-after-exposure-to-different-flaviviruses
#9
Daniela Huzly, Ingeborg Hanselmann, Jonas Schmidt-Chanasit, Marcus Panning
The current Zika virus (ZIKV) epidemic in the Americas caused an increase in diagnostic requests in European countries. Here we demonstrate high specificity of the Euroimmun anti-ZIKV IgG and IgM ELISA tests using putative cross-reacting sera of European patients with antibodies against tick-borne encephalitis virus, dengue virus, yellow fever virus and hepatitis C virus. This test may aid in counselling European travellers returning from regions where ZIKV is endemic.
April 21, 2016: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/27030492/a-pan-dengue-virus-reverse-transcription-insulated-isothermal-pcr-assay-intended-for-point-of-need-diagnosis-of-dengue-virus-infection-by-use-of-the-pockit-nucleic-acid-analyzer
#10
Yun Young Go, R P V Jayanthe Rajapakse, Senanayake A M Kularatne, Pei-Yu Alison Lee, Keun Bon Ku, Sangwoo Nam, Pin-Hsing Chou, Yun-Long Tsai, Yu-Lun Liu, Hsiao-Fen Grace Chang, Hwa-Tang Thomas Wang, Udeni B R Balasuriya
Dengue virus (DENV) infection is considered a major public health problem in developing tropical countries where the virus is endemic and continues to cause major disease outbreaks every year. Here, we describe the development of a novel, inexpensive, and user-friendly diagnostic assay based on a reverse transcription-insulated isothermal PCR (RT-iiPCR) method for the detection of all four serotypes of DENV in clinical samples. The diagnostic performance of the newly established pan-DENV RT-iiPCR assay targeting a conserved 3' untranslated region of the viral genome was evaluated...
June 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/26729887/defining-acute-kidney-injury-in-dengue-viral-infection-by-conventional-and-novel-classification-systems-akin-and-rifle-a-comparative-analysis
#11
COMPARATIVE STUDY
Tauqeer Hussain Mallhi, Amer Hayat Khan, Azmi Sarriff, Azreen Syazril Adnan, Yusra Habib Khan, Fauziah Jummaat
BACKGROUND: Several criteria have been used to stratify acute kidney injury (AKI) in dengue infection and have resulted in variations in its incidence as well as clinic-laboratory characteristics. The current study was aimed to compare three commonly used criteria of AKI among patients with dengue. METHODS: 667 patients with dengue were defined and staged according to the conventional definition (CD), the Acute Kidney Injury Network (AKIN) and the Risk, Injury, Failure, Loss of function, End stage renal disease (RIFLE) criteria...
February 2016: Postgraduate Medical Journal
https://www.readbyqxmd.com/read/26655854/enhanced-performance-of-an-innovative-dengue-igg-igm-rapid-diagnostic-test-using-an-anti-dengue-edi-monoclonal-antibody-and-dengue-virus-antigen
#12
Jihoo Lee, Young-Eun Kim, Hak-Yong Kim, Mangalam Sinniah, Chom-Kyu Chong, Hyun-Ok Song
High levels of anti-dengue IgM or IgG can be detected using numerous rapid diagnostic tests (RDTs). However, the sensitivity and specificity of these tests are reduced by changes in envelope glycoprotein antigenicity that inevitably occur in limited expression systems. A novel RDT was designed to enhance diagnostic sensitivity. Dengue viruses cultured in animal cells were used as antigens to retain the native viral coat protein. Monoclonal antibodies (mAbs) were then developed, for the first time, against domain I of envelope glycoprotein (EDI)...
December 11, 2015: Scientific Reports
https://www.readbyqxmd.com/read/26536916/quantification-of-ns1-dengue-biomarker-in-serum-via-optomagnetic-nanocluster-detection
#13
Paula Antunes, Daniel Watterson, Mattias Parmvi, Robert Burger, Anja Boisen, Paul Young, Matthew A Cooper, Mikkel F Hansen, Andrea Ranzoni, Marco Donolato
Dengue is a tropical vector-borne disease without cure or vaccine that progressively spreads into regions with temperate climates. Diagnostic tools amenable to resource-limited settings would be highly valuable for epidemiologic control and containment during outbreaks. Here, we present a novel low-cost automated biosensing platform for detection of dengue fever biomarker NS1 and demonstrate it on NS1 spiked in human serum. Magnetic nanoparticles (MNPs) are coated with high-affinity monoclonal antibodies against NS1 via bio-orthogonal Cu-free 'click' chemistry on an anti-fouling surface molecular architecture...
2015: Scientific Reports
https://www.readbyqxmd.com/read/26531251/mitochondrial-dna-variants-help-monitor-the-dynamics-of-wolbachia-invasion-into-host-populations
#14
H L Yeap, G Rašić, N M Endersby-Harshman, S F Lee, E Arguni, H Le Nguyen, A A Hoffmann
Wolbachia is the most widespread endosymbiotic bacterium of insects and other arthropods that can rapidly invade host populations. Deliberate releases of Wolbachia into natural populations of the dengue fever mosquito, Aedes aegypti, are used as a novel biocontrol strategy for dengue suppression. Invasion of Wolbachia through the host population relies on factors such as high fidelity of the endosymbiont transmission and limited immigration of uninfected individuals, but these factors can be difficult to measure...
March 2016: Heredity
https://www.readbyqxmd.com/read/26159629/dengue-fever-in-czech-travellers-a-10-year-retrospective-study-in-a-tertiary-care-centre
#15
Milan Trojánek, Jan Maixner, Naděžda Sojková, Jan Kynčl, Hana Roháčová, Vilma Marešová, František Stejskal
BACKGROUND: Dengue fever is a frequent cause of morbidity in travellers. The objective was to describe the epidemiological and clinical characteristics of dengue fever in Czech travellers. METHOD: This descriptive study includes patients with acute dengue fever diagnosed at Hospital Na Bulovce during 2004-2013. Data were collected and analysed retrospectively. RESULTS: A total of 132 patients (83 males and 49 females) of median age 33 years (IQR 29-40) were included...
January 2016: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/26095472/neglected-diseases-prioritized-in-brazil-under-the-perspective-of-metabolomics-a-review
#16
Gisele A B Canuto, Pedro L R da Cruz, Andrea T Faccio, Aline Klassen, Marina F M Tavares
This review article compiles in a critical manner literature publications regarding seven neglected diseases (ND) prioritized in Brazil (Chagas disease, dengue, leishmaniasis, leprosy, malaria, schistosomiasis, and tuberculosis) under the perspective of metabolomics. Both strategies, targeted and untargeted metabolomics, were considered in the compilation. The majority of studies focused on biomarker discovery for diagnostic purposes, and on the search of novel or alternative therapies against the ND under consideration, although temporal progression of the infection at metabolic level was also addressed...
June 10, 2015: Electrophoresis
https://www.readbyqxmd.com/read/26086983/development-and-characterization-of-polyclonal-peptide-antibodies-for-the-detection-of-yellow-fever-virus-proteins
#17
N K Stock, C Escadafal, K Achazi, M Cissé, M Niedrig
There is still a considerable need for development of new tools and methods detecting specific viral proteins for the diagnosis and pathogenesis study of the Yellow fever virus (YFV). This study aimed to develop and characterize polyclonal peptide antisera for detection of YFV-C and -NS1 proteins. The antisera were used further to investigate NS1 protein expression during YFV infection in mammalian cells. YFV target proteins were detected by all antisera in western blot and immunofluorescence assays. No cross-reactivity was observed with Dengue virus, West Nile virus, Tick-borne encephalitis virus and Japanese encephalitis virus...
September 15, 2015: Journal of Virological Methods
https://www.readbyqxmd.com/read/26010246/a-highly-sensitive-diagnostic-system-for-detecting-dengue-viruses-using-the-interaction-between-a-sulfated-sugar-chain-and-a-virion
#18
Budi Saksono, Beti Ernawati Dewi, Leonardo Nainggolan, Yasuo Suda
We propose a novel method of detecting trace amounts of dengue virus (DENVs) from serum. Our method is based on the interaction between a sulfated sugar chain and a DENV surface glycoprotein. After capturing DENV with the sulfated sugar chain-immobilized gold nanoparticles (SGNPs), the resulting complex is precipitated and viral RNA content is measured using the reverse-transcription quantitative polymerase chain reaction SYBR Green I (RT-qPCR-Syb) method. Sugar chains that bind to DENVs were identified using the array-type sugar chain immobilized chip (Sugar Chip) and surface plasmon resonance (SPR) imaging...
2015: PloS One
https://www.readbyqxmd.com/read/25993517/a-colorimetric-enzyme-linked-immunosorbent-assay-elisa-detection-platform-for-a-point-of-care-dengue-detection-system-on-a-lab-on-compact-disc
#19
Aung Thiha, Fatimah Ibrahim
The enzyme-linked Immunosorbent Assay (ELISA) is the gold standard clinical diagnostic tool for the detection and quantification of protein biomarkers. However, conventional ELISA tests have drawbacks in their requirement of time, expensive equipment and expertise for operation. Hence, for the purpose of rapid, high throughput screening and point-of-care diagnosis, researchers are miniaturizing sandwich ELISA procedures on Lab-on-a-Chip and Lab-on-Compact Disc (LOCD) platforms. This paper presents a novel integrated device to detect and interpret the ELISA test results on a LOCD platform...
2015: Sensors
https://www.readbyqxmd.com/read/25971296/improved-immunoassay-sensitivity-in-serum-as-a-result-of-polymer-entrapped-quantum-dots-papaya-particles
#20
Andrea Ranzoni, Anniek den Hamer, Tomislav Karoli, Joseph Buechler, Matthew A Cooper
Fluorescent labels are widely employed in biomarker quantification and diagnostics, however they possess narrow Stokes shifts and can photobleach, limiting multiplexed detection applications and compromising sensitivity. In contrast, quantum dots do not photobleach and have much wider Stokes shifts, but a paucity of robust surface attachment chemistries for bioconjugation has limited their uptake in biomedical diagnostics. We report a novel class of biofunctional fluorescent labels based on trapping of ∼10(4) quantum dots within a core nanoparticle...
June 16, 2015: Analytical Chemistry
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