A sandwich format immunochromatographic assay for detecting foot-and-mouth disease virus (FMDV) serotypes was developed. In this rapid test,affinity purified polyclonal antibodies from Guinea pigs which were immunized...A sandwich format immunochromatographic assay for detecting foot-and-mouth disease virus (FMDV) serotypes was developed. In this rapid test,affinity purified polyclonal antibodies from Guinea pigs which were immunized with sucking-mouse adapted FMD virus (A/AV88(L) strain) were conjugated to colloidal gold beads and used as the capture antibody,and affinity purified polyclonal antibodies from rabbits which were immunized with cell-culture adapted FMD virus (A/CHA/09 strain) were used as detector antibody. On the nitrocellulose membrane of the immunochromatographic strip,the capture antibody was laid on a sample pad,the detector antibody was printed at the test line(T) and goat anti-guinea pigs IgG antibodies were immobilized to the control line(C). The lower detection limit of the test for a FMDV 146S antigen is 11.7ng/ml as determined in serial tests after the strip device was assembled and the assay condition optimization. No cross reactions were found with FMDV serotype C,Swine vesicular disease (SVD),Vesicular stomatiti svirus (VSV) and vesicular exanthema of swine virus (VES) viral antigens with this rapid test. Clinically,the diagnostic sensitivity of this test for FMDV serotypes A was 88.7% which is as same as an indirect-sandwich ELISA. The specificity of this strip test was 98.2% and is comparable to the 98.7% obtained with indirect-sandwich ELISA. This rapid strip test is simple,easy and fast for clinical testing on field sites; no special instruments and skills are required,and the result can be obtained within 15 min. To our knowledge,this is the first rapid immunochromatogarpic assay for serotype A of FMDV.展开更多
2015年9月以来,美国中西部多个地区的猪群发生水疱性疫情,几呈蔓延之势,感染猪的鼻吻、蹄冠状带部位出现水疱样病变,偶见腹泻症状,病情急促,新生仔猪病死率达30%-70%。经梅岛外来动物疾病实验室（FADDL）病原学鉴别诊断,排除口蹄疫、猪...2015年9月以来,美国中西部多个地区的猪群发生水疱性疫情,几呈蔓延之势,感染猪的鼻吻、蹄冠状带部位出现水疱样病变,偶见腹泻症状,病情急促,新生仔猪病死率达30%-70%。经梅岛外来动物疾病实验室（FADDL）病原学鉴别诊断,排除口蹄疫、猪水疱病和水疱性口炎等重要外来动物疫病,最终被确诊为塞尼卡谷病毒（Seneca Valley virus,SVV）感染。展开更多
基金Financial supported by the Gansu ProvincialSci. & Tech. Department (1002NKDA037)
文摘A sandwich format immunochromatographic assay for detecting foot-and-mouth disease virus (FMDV) serotypes was developed. In this rapid test,affinity purified polyclonal antibodies from Guinea pigs which were immunized with sucking-mouse adapted FMD virus (A/AV88(L) strain) were conjugated to colloidal gold beads and used as the capture antibody,and affinity purified polyclonal antibodies from rabbits which were immunized with cell-culture adapted FMD virus (A/CHA/09 strain) were used as detector antibody. On the nitrocellulose membrane of the immunochromatographic strip,the capture antibody was laid on a sample pad,the detector antibody was printed at the test line(T) and goat anti-guinea pigs IgG antibodies were immobilized to the control line(C). The lower detection limit of the test for a FMDV 146S antigen is 11.7ng/ml as determined in serial tests after the strip device was assembled and the assay condition optimization. No cross reactions were found with FMDV serotype C,Swine vesicular disease (SVD),Vesicular stomatiti svirus (VSV) and vesicular exanthema of swine virus (VES) viral antigens with this rapid test. Clinically,the diagnostic sensitivity of this test for FMDV serotypes A was 88.7% which is as same as an indirect-sandwich ELISA. The specificity of this strip test was 98.2% and is comparable to the 98.7% obtained with indirect-sandwich ELISA. This rapid strip test is simple,easy and fast for clinical testing on field sites; no special instruments and skills are required,and the result can be obtained within 15 min. To our knowledge,this is the first rapid immunochromatogarpic assay for serotype A of FMDV.
文摘2015年9月以来,美国中西部多个地区的猪群发生水疱性疫情,几呈蔓延之势,感染猪的鼻吻、蹄冠状带部位出现水疱样病变,偶见腹泻症状,病情急促,新生仔猪病死率达30%-70%。经梅岛外来动物疾病实验室（FADDL）病原学鉴别诊断,排除口蹄疫、猪水疱病和水疱性口炎等重要外来动物疫病,最终被确诊为塞尼卡谷病毒（Seneca Valley virus,SVV）感染。
