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Guo Y, Wang Y, Fan Z, Zhao X, Bergmann SM, Dong H, Jin Y, Sun D, Mai Q, Liu W, Zeng W. Establishment and evaluation of qPCR and real-time recombinase-aided amplification assays for detection of largemouth bass ranavirus. J Fish Dis 2022; 45:1033-1043. [PMID: 35475515 DOI: 10.1111/jfd.13627] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 04/10/2022] [Accepted: 04/13/2022] [Indexed: 06/14/2023]
Abstract
Largemouth bass ranavirus disease (LMBVD) caused by largemouth bass ranavirus (LMBV) has resulted in severe economic losses in the largemouth bass (Micropterus salmoides) farming industry in China. Early and accurate diagnosis is the key measure for the prevention and control of LMBVD. In this study, a quantitative polymerase chain reaction (qPCR) and a real-time recombinase-aided amplification (real-time RAA) assay were established for the detection of LMBV. The sensitivity and specificity of these two methods, and the efficacy for detection of LMBV from clinical samples were also evaluated. Results showed that the real-time RAA reaction was completed in <30 min at 39℃ with a detection limit of 58.3 copies, while qPCR reaction required 60 min with a detection limit of 5.8 copies. Both methods were specific for LMBV, where no cross-reactions observed with the other tested fish pathogens. Comparing the amplification results of both assays to the results obtained by virus isolation using 53 clinical tissue samples, results showed that the clinical sensitivity of real-time RAA and qPCR were 93.75% and 100% respectively, and the clinical specificity of both were 100%. Our results showed that qPCR is more suitable for quantitative analysis and accurate detection of LMBV in the laboratory, while real-time RAA is more suitable as a point-of-care diagnostic tool for on-site detection and screening of LMBV under farm conditions and in poorly equipped laboratories.
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Affiliation(s)
- Yanmin Guo
- College of Pharmacy, Heze University, Heze, China
| | - Yahui Wang
- Guangdong Yongshun Biopharmaceutical Co. Ltd., Zhaoqing, China
| | - Zhaobin Fan
- College of Pharmacy, Heze University, Heze, China
| | - Xianlin Zhao
- College of Pharmacy, Heze University, Heze, China
| | - Sven M Bergmann
- Institute of Infectology, Friedrich-Loffler-Institut (FLI), Federal Research Institute for Animal Health, Greifswald-InselRiems, Germany
| | - Hanxu Dong
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - Yuqi Jin
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - Dongli Sun
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - Qianyi Mai
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - Weiqiang Liu
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - Weiwei Zeng
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
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Zhang Y, Yuan L, Chen C, Mgomi FC, Yang Z, Jiao X. Specific detection of viable
Cronobacter sakazakii
in powdered infant formula by phage amplification combined with
qPCR
(
PAA‐qPCR
) assay. INT J DAIRY TECHNOL 2022. [DOI: 10.1111/1471-0307.12889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuan‐Song Zhang
- School of Food Science and Technology Yangzhou University Yangzhou Jiangsu 225127 China
| | - Lei Yuan
- School of Food Science and Technology Yangzhou University Yangzhou Jiangsu 225127 China
| | - Cao‐Wei Chen
- School of Food Science and Technology Yangzhou University Yangzhou Jiangsu 225127 China
| | - Fedrick C Mgomi
- School of Food Science and Technology Yangzhou University Yangzhou Jiangsu 225127 China
| | - Zhen‐Quan Yang
- School of Food Science and Technology Yangzhou University Yangzhou Jiangsu 225127 China
- Jiangsu Key Laboratory of Zoonoses Yangzhou Jiangsu 225009 China
| | - Xin‐an Jiao
- Jiangsu Key Laboratory of Zoonoses Yangzhou Jiangsu 225009 China
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