文献类型： 外文期刊
作者： He, Huilin 1 ; Feng, Ruixue 1 ; Guo, Siyi 1 ; Han, Bing 1 ; Huang, Jinshan 1 ; Lin, Xu 1 ; Yin, Jiyuan 2 ; Zhang, Defeng 2 ; Liu, Min 1 ; Shi, Wen 1 ;
作者机构： 1.Northeast Agr Univ, Coll Anim Sci & Technol, Harbin, Peoples R China
2.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Key Lab Fishery Drug Dev, Minist Agr & Rural Affairs,Guangdong Prov Key Lab, Guangzhou 510380, Peoples R China
关键词： carp oedema virus; p4a gene; quantitative analysis; SYBR Green I real-time PCR
期刊名称：JOURNAL OF FISH DISEASES （ 影响因子：2.2； 五年影响因子：2.2 ）
ISSN： 0140-7775
年卷期： 2025 年
页码：
收录情况： SCI
摘要： Carp oedema virus disease (CEVD), caused by the carp oedema virus (CEV), results in significant economic losses to the common carp and koi aquaculture industry. The CEVD symptoms resemble those of koi herpesvirus (KHV) and include lethargy, swollen gills, sunken eyes, and skin haemorrhages. Consequently, the development of efficient detection methods is imperative for the prevention and diagnosis of CEVD. In this study, we developed a quantitative real-time PCR assay for the sensitive detection of CEV infection. Specific primers were designed based on a highly conserved region within the CEV p4a gene. The assay exhibited a sensitivity that was 100-fold greater than that of the conventional PCR technique, with high specificity, and no observed cross-reactivity with infectious haematopoietic necrosis virus (IHNV), infectious pancreatic necrosis virus (IPNV), spring viremia of carp virus (SVCV), salmonid alphavirus (SAV), or KHV. Inter- and intra-assay experiments also confirmed the method's high repeatability. In a clinical setting, it showed higher sensitivity compared to the diagnostic methods for CEVD developed by the Center for Environment, Fisheries and Aquaculture Science (CEFAS), while also significantly reducing detection costs. Consequently, the established assay could provide robust technical support for the clinical diagnosis and epidemiological investigation of CEVD.
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