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Development of an antigen-capture enzyme-linked immunosorbent assay and immunochromatographic strip based on monoclonal antibodies for detection of H6 avian influenza viruses

文献类型: 外文期刊

作者: Yang, Fan 1 ; Xiao, Yixin 1 ; Xu, Lihua 3 ; Liu, Fumin 1 ; Yao, Hangping 1 ; Wu, Nanping 1 ; Wu, Haibo 1 ;

作者机构: 1.Zhejiang Univ, Sch Med, Affiliated Hosp 1, State Key Lab Diag & Treatment Infect Dis, 79 Qingchun Rd, Hangzhou 310003, Zhejiang, Peoples R China

2.Zhejiang Univ, Sch Med, Affiliated Hosp 1, Natl Clin Res Ctr Infect Dis, 79 Qingchun Rd, Hangzhou 310003, Zhejiang, Peoples R China

3.Zhejiang Acad Agr Sci, Anim Husb & Vet Inst, Hangzhou 310021, Peoples R China

期刊名称:ARCHIVES OF VIROLOGY ( 影响因子:2.574; 五年影响因子:2.466 )

ISSN: 0304-8608

年卷期: 2020 年 165 卷 5 期

页码:

收录情况: SCI

摘要: Continuous surveillance has shown that H6 subtype avian influenza viruses (AIVs) are prevalent in poultry and occasionally break the species barrier to infect humans. It is therefore necessary to establish a specific, rapid and sensitive method to screen H6 AIVs. In this study, a panel of monoclonal antibodies (mAbs) against the hemagglutinin (HA) of an H6 AIV isolate was produced. The purified mAbs have high affinity and specificity for H6 AIVs. An antigen-capture enzyme-linked immunosorbent assay (AC-ELISA) and immunochromatographic strip were developed based on two mAbs (1D7 and 1F12). The AC-ELISA results showed high sensitivity with a limit of detection (LOD) of 3.9 & x202f;ng/ml for H6 HA protein and 0.5 HAU (HA units)/100 mu l for live H6 subtype AIVs. The average recovery of the AC-ELISA with allantoic fluid, respiratory specimens, and cloacal swabs was 91.907 +/- 1.559%, 82.977 +/- 1.497% and 73.791 +/- 2.588%, respectively. The intra- and inter-assay coefficient of variation was less than 10%. The LOD of immunochromatographic strip was 1 HAU when evaluated by the naked eye, and the detection time was less than 10 & x202f;min without any equipment. Storage at room temperature or 4 degrees C for 30 days or 60 days had no effect on sensitivity and specificity of the strip. Thus, the AC-ELISA and immunochromatographic strips described here could be a secondary method to diagnose H6 AIV infections with high specificity, sensitivity, and stability.

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