Development of a one-step strip test for the diagnosis of chicken infectious bursal disease
文献类型: 外文期刊
第一作者: Zhang, GP
作者: Zhang, GP;Li, QM;Yan, YY;Guo, JQ;Li, XW;Deng, RG;Xiao, ZJ;Xing, GX;Yang, JF;Zhao, D;Cai, SJ;Zang, WM
作者机构:
关键词: infectious bursal disease;rapid diagnostic strip;colloidal gold
期刊名称:AVIAN DISEASES ( 影响因子:1.577; 五年影响因子:1.915 )
ISSN: 0005-2086
年卷期: 2005 年 49 卷 2 期
页码:
收录情况: SCI
摘要: A rapid diagnostic strip for chicken infectious bursal disease (IBD) was developed based on membrane chromatography using high-affinity monoclonal antibodies directed to chicken infectious bursal disease virus (IBDV). The diagnostic strip has high specificity for detection of chicken IBDV antigen and recognizes a variety of the virus isolates, including virulent and attenuated strains, with no cross-reactivity to other viruses, such as Newcastle disease virus, Marek's disease virus, infectious bronchitis virus, infectious laryngotracheitis virus, and egg-drop-syndrome virus. The results showed that its specificity was highly consistent with the agar-gel precipitation test (AGP). The diagnostic strip detected as low as 800 median egg lethal dose (ELD50) viruses in the IBDV BC6/85-infected sample, which was comparable with AC-ELISA (400 ELD50) and 32 times more sensitive than the AGP test (2.56 x 10(4) ELD50). In experimental infection, IBDV was detected in the bursa as early as 36 hr postinfection with the diagnostic strip before the clinical signs and gross lesions appeared. It takes only 1-2 min to do a strip test to detect chicken IBDV antigen after the specimen is grounded in a whirl pack with finger massage.
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