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Wei Y, Yang B, Li Y, Duan Y, Tian D, He B, Chen C, Liu W, Yang L. A rapid and quantitative fluorescent microsphere immunochromatographic strip test for detection of antibodies to porcine reproductive and respiratory syndrome virus. J Vet Sci 2020; 21:e68. [PMID: 32735103 PMCID: PMC7402939 DOI: 10.4142/jvs.2020.21.e68] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 04/08/2020] [Accepted: 04/09/2020] [Indexed: 11/30/2022] Open
Abstract
A fluorescent microsphere-based immunochromatographic strip test (FICT) was developed for the rapid, sensitive, and quantitative detection of porcine reproductive and respiratory syndrome virus (PRRSV) antibodies at the pen-side. The assay was based on the formation of a sandwich immune-complex (anti-pig IgG-PRRSV antibodies-NSP7/N), which was validated by a comparison with IDEXX-ELISA using 3325 clinical specimens. The diagnostic specificity, sensitivity, and accuracy of FICT were 97.28, 93.41, and 94.95%, respectively. FICT showed a good correlation with the virus neutralization assay. Overall, a promising pen-side diagnostic tool was developed for the rapid and quantitative detection of PRRSV antibodies within 15 min.
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Affiliation(s)
- Yanqiu Wei
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Baozhi Yang
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, China
| | - Yunlong Li
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yongcheng Duan
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, China
| | - Deyu Tian
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Baoxiang He
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, China
| | - Chuangfu Chen
- College of Animal Science and Technology, Shihezi University, Shihezi 832003, China
| | - Wenjun Liu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Limin Yang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China.,College of Animal Science and Technology, Shihezi University, Shihezi 832003, China.
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You Q, Liu M, Liu Y, Zheng H, Hu Z, Zhou Y, Wang B. Lanthanide-Labeled Immunochromatographic Strip Assay for the On-Site Identification of Ancient Silk. ACS Sens 2017; 2:569-575. [PMID: 28723195 DOI: 10.1021/acssensors.7b00086] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The on-site identification of ancient silks has long been a key challenge in archeology. Therefore, a rapid, cost-effective, sensitive analytical approach is highly desirable. In this paper, a lanthanide-labeled immunochromatographic strip which is suitable for the on-site identification of ancient silks is described. Compared with the conventional colloidal gold-based immunochromatographic strip, this strip shows much higher analytical sensitivity and better quantitative discrimination. The limit of detection (LOD) of the strip for silk fibroin (SF) was calculated as 8.09 ng/mL, approximately 185 times lower than that of the colloidal gold-based immunochromatographic strip. No cross-reactions with other possible interfering antigens were observed. Moreover, the strip also shows good reproducibility, with a mean recovery of 94.15-102.55% and coefficient of variation of 5.22-17.57% in the repeated tests. Based on the advantages of portability and cost-effectiveness, as well as sensitivity, specificity, and reproducibility, the lanthanide-labeled immunochromatographic strip is a promising tool for on-site detection of ancient relics in archeological fieldwork.
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Affiliation(s)
| | | | | | - Hailing Zheng
- Key
Scientific Research Base of Textile Conservation, State Administration
for Cultural Heritage, China National Silk Museum, Hangzhou 310002, China
| | | | - Yang Zhou
- Key
Scientific Research Base of Textile Conservation, State Administration
for Cultural Heritage, China National Silk Museum, Hangzhou 310002, China
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