Open AccessRapid Detection of Orthopoxviruses
Author(s) -
А. Г. Полтавченко,
А. В. Ерш,
Pavel V. Filatov,
N. D. Ushkalenko,
S. N. Yakubitsky,
А. А. Сергеев,
Д. Н. Щербаков
Publication year - 2021
Publication title -
problemy osobo opasnyh infekcij
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.16
H-Index - 3
eISSN - 2658-719X
pISSN - 0370-1069
DOI - 10.21055/0370-1069-2021-3-106-113
Subject(s) - immunoassay , polyclonal antibodies , vaccinia , virology , point of care , virus , protocol (science) , detection limit , antibody , biology , medicine , chromatography , chemistry , immunology , pathology , biochemistry , alternative medicine , gene , recombinant dna
The aim of the study was to develop a sensitive and fast immunochemical test for the detection of orthopoxviruses (OPXV) in the “point of care” format. Materials and methods. The analyses were performed in cultured crude and purifed preparations of vaccinia virus, cowpoxvirus, rabbitpoxvirus and ectromelia virus, as well as in the blood and tissue suspensions of infected mice and rabbits. OPXV-antigen was detected by one-stage and two-stage protocols of dot-immunoassay based on at protein arrays using rabbit polyclonal antibodies as capture and detection reagents. Results and discussion. The results show that the detection limit of OPXV is inversely related to the degree of their purifcation. The one-stage (rapid) protocol is specifc and allows detecting OPXV in crude culture samples of the virus and in clinical samples in the range of 104–103 PFU/ml within 39 minutes. Rapid dot-immunoassay can be applied to detect or exclude the presence of a viral threat in samples and can be useful in various aspects of biosafety provision. The simplicity of the one-stage protocol, the possibility to visually account the results and easy interpretation of the results allow the rapid test to be used in the “point of care” format.