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|Fiber-optic immunosensor for detection of Crimean-Congo Hemorrhagic fever IgG antibodies in patients
Vdovenko, Marina M
Sakharov, Ivan Y
Marks, Robert S
|Algaar F, Eltzov E, Vdovenko MM, Sakharov IY, Fajs L, Weidmann M, Mirazimi A & Marks RS (2015) Fiber-optic immunosensor for detection of Crimean-Congo Hemorrhagic fever IgG antibodies in patients. Analytical Chemistry, 87 (16), pp. 8394-8398. https://doi.org/10.1021/acs.analchem.5b01728
|Crimean-Congo hemorrhagic fever (CCHF) is a severe viral disease with high fatality rate. CCHF virus is endemic in parts of Africa, Asia, Middle East and southeastern Europe. Rapid diagnostics of CCHF is vital for appropriate clinical management and prevention of secondary spread from human-to-human. Currently, diagnostics relies on Real-Time RT-PCR and antibody or antigen detection using ELISA. These methods require trained personnel and expensive equipment and are not appropriate for point-of-care (POC) diagnostics. Furthermore there are no POC assays available for CCHF. We developed a fiber-optic biosensor for the detection of CCHF IgG antibodies. In order to improve sensitivity, we optimized both the bioreceptor immobilization protocol and the chemiluminescence substrate formulation. The resulting protocol showed a 100-fold greater sensitivity for detection of CCHF antibodies. Finally, we evaluated the fiber-optic biosensor with two CCHF patient sera. We showed that the fiber-optic biosensor is 10-times more sensitive that colorimetric ELISA and is able to detect both patients with high and low levels of IgG antibodies. We believe that the fiber-optic biosensor is a suitable alternative to ELISA as it is much more sensitive and makes it possible to detect small amount of antibodies at an early stage of infection, and can be integrated as a point-of-care diagnostic system of CCHF.
|This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Anal. Chem., 2015, 87 (16), pp 8394–8398, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/acs.analchem.5b01728
|Algaar et al_Anal Chem_2015.pdf
|Fulltext - Accepted Version
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