1
|
Park BJ, Jung ST, Choi CS, Myoung J, Ahn HS, Han SH, Kim YH, Go HJ, Lee JB, Park SY, Song CS, Lee SW, Choi IS. Pathogenesis of Human Norovirus Genogroup II Genotype 4 in Post-Weaning Gnotobiotic Pigs. J Microbiol Biotechnol 2019; 28:2133-2140. [PMID: 30661347 DOI: 10.4014/jmb.1809.09061] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Norovirus is the most common cause of acute gastroenteritis. Its pathogenesis is poorly understood owing to the difficulty of establishing viral infection in animal models. Here, post-weaning gnotobiotic pigs were infected with human norovirus genogroup II genotype 4 (HuNoV GII.4) to investigate the pathogenesis and replication of the virus. Three groups of four pigs were infected with 1 × 10⁵, 1 × 10⁶, or 1 × 10⁷ genomic equivalent (GE) copies of HuNoV GII.4. Four pigs were used as negative controls. Blood and rectal swab samples were collected after viral infection, and gross legions were examined after necropsy. Diarrhea was induced in 25% and 75% of pigs infected with 1 × 10⁶ and 1 × 10⁷ GE copies, respectively. Viral shedding was detected in 50%, 75%, and 50% of pigs infected with 1 × 10⁵, 1 × 10⁶, and 1 × 10⁷ GE copies, respectively. Viremia was detected in 25% of pigs infected with either 1 × 10⁶ or 1 × 10⁷ GE copies. When gross lesions of gastroenteritis were investigated, the ileum walls of the infected pigs were thinner than those of the controls. Villi atrophy and inflammatory cell infiltration were identified in the ileum of each infected pig. Viral capsid was identified in the jejunum, ileum, colon, spleen, and mesenteric lymph node. Virus replication was newly verified in the spleen and mesenteric lymph nodes by detection of negative-sense viral RNA. In conclusion, HuNoV GII.4 could induce acute gastroenteritis and replicate in the extraintestinal lymphoid tissues in post-weaning gnotobiotic pigs. Therefore, such pigs would be a suitable animal model for studying the pathogenesis and replication of HuNoV.
Collapse
Affiliation(s)
- Byung-Joo Park
- Department of Infectious Diseases, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Soon-Tag Jung
- Department of Food and Nutrition, College of Biotechnology and Natural Resources, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Chang-Sun Choi
- Department of Food and Nutrition, College of Biotechnology and Natural Resources, Chung-Ang University, Anseong 17546, Republic of Korea
| | - JinJong Myoung
- Korea Zoonosis Research Institute, Chonbuk National University, Jeonju 54896, Republic of Korea
| | - Hee-Seop Ahn
- Department of Infectious Diseases, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Sang-Hoon Han
- Department of Infectious Diseases, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Yong-Hyun Kim
- Department of Infectious Diseases, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Hyeon-Jeong Go
- Department of Infectious Diseases, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Joong-Bok Lee
- Department of Infectious Diseases, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Seung-Yong Park
- Department of Infectious Diseases, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Chang-Seon Song
- Department of Infectious Diseases, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Sang-Won Lee
- Department of Infectious Diseases, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - In-Soo Choi
- Department of Infectious Diseases, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| |
Collapse
|
2
|
Park BJ, Jung ST, Choi CS, Myoung J, Ahn HS, Han SH, Kim YH, Go HJ, Lee JB, Park SY, Song CS, Lee SW, Choi IS. Pathogenesis of human norovirus genogroup II genotype 4 in post-weaning gnotobiotic pigs. J Microbiol Biotechnol 2018. [DOI: 10.4014/jmb.1810.09061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
|