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Hong D, Bian J, Zeng L, Huang S, Qin Y, Chen Y, Wei Z, Huang W, Ouyang K. A novel VP1-based enzyme-linked immunosorbent assay revealed widespread Enterovirus G infections in Guangxi, China. J Virol Methods 2024; 325:114873. [PMID: 38142820 DOI: 10.1016/j.jviromet.2023.114873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 12/26/2023]
Abstract
Enterovirus G (EV-G) has recently been shown to affect weight gain and cause neurological symptoms in piglets. However, the serological investigation of EV-G is limited. In this study, we developed a novel serological detection method based on the structural protein, VP1 of EV-G. The intra-assay and inter-assay coefficient variations were 3.2-8.9% and 2.6-8.0%, respectively. There was no cross-reaction of the VP1-based enzyme-linked immunosorbent assay (ELISA) with antisera against the other known porcine viruses. In addition, a comparison was made with other methods including the developed indirect ELISAs based on VP2 and VP3 proteins and western blot (WB) analysis, which demonstrated the reliability of the novel method. Using the VP1-based ELISA, we carried out the first seroepidemiological survey of EV-G in China by testing 1041 serum samples collected from different pig farms in Guangxi from 2019 to 2021. Our results showed that 68.78% of the serum samples and 100% of the pig farms were positive for EV-G, with a relatively high incidence of seropositivity in pigs of different ages. This was specifically evident in fattening pigs and sows, which may suggest that the piglets have experienced an infection with EV-G during their growth process. Our data provide the first serological evidence of EV-G infections in pigs from China and reveal the widespread presence of EV-G infections in Guangxi, China.
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Affiliation(s)
- Dalin Hong
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, College of Animal Science and Technology, Guangxi University, Nanning 530005, China
| | - Jinni Bian
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, College of Animal Science and Technology, Guangxi University, Nanning 530005, China
| | - Lingyou Zeng
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, College of Animal Science and Technology, Guangxi University, Nanning 530005, China
| | - Shiting Huang
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, College of Animal Science and Technology, Guangxi University, Nanning 530005, China
| | - Yifeng Qin
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, College of Animal Science and Technology, Guangxi University, Nanning 530005, China; Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530005, China; Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530005, China
| | - Ying Chen
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, College of Animal Science and Technology, Guangxi University, Nanning 530005, China; Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530005, China; Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530005, China
| | - Zuzhang Wei
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, College of Animal Science and Technology, Guangxi University, Nanning 530005, China; Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530005, China; Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530005, China
| | - Weijian Huang
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, College of Animal Science and Technology, Guangxi University, Nanning 530005, China; Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530005, China; Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530005, China
| | - Kang Ouyang
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, College of Animal Science and Technology, Guangxi University, Nanning 530005, China; Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530005, China; Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530005, China.
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