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Development of a loop-mediated isothermal amplification (LAMP) assay for rapid and visual detection of Anguillid herpesvirus 1

文献类型： 外文期刊

作者： Chen, Qiang 1 ; Zhang, Li-Juan 1 ; Song, Tie-Ying 1 ; Ge, Jun-Qing 1 ;

作者机构： 1.Fujian Acad Agr Sci, Inst Biotechnol, Wusi Rd 247, Fuzhou 350003, Peoples R China

关键词： Anguillid herpesvirus; LAMP; Visual; Detection; Eel

期刊名称：JOURNAL OF VIROLOGICAL METHODS （ 影响因子：1.6； 五年影响因子：1.9 ）

ISSN： 0166-0934

年卷期： 2024 年 330 卷

页码：

收录情况： SCI

摘要： China has the largest aquaculture eel production in the world. High-density cultivation pattern often results in an outbreak of epidemic diseases. Since the 1990s, eel "mucus sloughing and hemorrhagic septicemia disease" was often broke out in China, and brought huge economic losses to eel breeders. Anguillid herpesvirus 1 (AngHV) was detected and isolated from the diseased eel, and proved to be the pathogen of the disease. In this study, a loopmediated isothermal amplification (LAMP) assay was developed for rapid, sensitive, and specific detection of AngHV. A set of six primers targeting the ORF51 gene of AngHV was designed, which could effectively detect purified AngHV virions, AngHV-infected cells, or eel tissue samples. The suitable reaction temperature is 63degree celsius, and the reaction time is 40 min. There was no cross-reaction with eel and other fish viruses, including Infectious pancreatic necrosis virus (IPNV), Marine birnavirus (MABV), Rana grylio virus (RGV), Cyprinid herpesvirus 3 (CyHV-3), and Eel iridovirus (EIV). The lower detection limit of the AngHV LAMP assay is 10 copies of AngHV genome DNA, which is at least 100 times more sensitive than conventional PCR in detecting AngHV. The assay could effectively detect AngHV from collected samples with typical clinical symptoms of AngHV infection. It suggested that the LAMP assay could be used in specific detection of AngHV and has great potential for early diagnosis of AngHV infection in the farm.

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