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Grego E, Bertolotti L, Colitti B, Stella MC, Catania AM, Castellina C. Detection and genetic characterization of chicken astrovirus and avian nephritis virus from hatchery to farm. Avian Pathol 2024:1-8. [PMID: 38836519 DOI: 10.1080/03079457.2024.2365249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 06/02/2024] [Indexed: 06/06/2024]
Abstract
RESEARCH HIGHLIGHTS Identified the role of the hatchery in astrovirus transmission.Sequenced the avian nephritis virus complete genome.Investigated tissue distribution of astrovirus from egg to chicks.Demonstrated co-infection of ANV/CAstV.
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Affiliation(s)
- Elena Grego
- Department of Veterinary Science, University of Torino, Torino, Italy
| | - Luigi Bertolotti
- Department of Veterinary Science, University of Torino, Torino, Italy
| | - Barbara Colitti
- Department of Veterinary Science, University of Torino, Torino, Italy
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2
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Han X, Yin L, Liang X, Liang H. Molecular characterization of chicken astrovirus and pathogenicity of a novel isolate in China. Front Microbiol 2023; 14:1280313. [PMID: 38149277 PMCID: PMC10751203 DOI: 10.3389/fmicb.2023.1280313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 10/24/2023] [Indexed: 12/28/2023] Open
Abstract
As an enteric virus, chicken astrovirus has been related to various kinds of diseases in chickens, including white chick syndrome, runting-stunting syndrome, severe kidney disease, urate deposits and visceral gout, generating economic losses in the poultry industry globally. The complete ORF2 gene of 31 CAstV isolates in six provinces of China during 2020-2022 was characterized and analyzed with the purpose of better understanding the molecular epidemiology and genetic diversity of CAstV field isolates. Phylogenetic analysis which was based on the complete ORF2 (capsid) amino acid sequence of 31 CAstV isolates and 57 reference strains indicated that 2 isolates belonged to subgroup Ai, 10 isolates belonged to subgroup Bi, 3 isolates belonged to subgroup Bii, 5 isolates belonged to subgroup Biii, 7 isolates belonged to subgroup Biv, 3 isolates belonged to subgroup Bv, and one isolate (JS202103) belonged to a new B subgroup. In addition, the novel CAstV strain JS202103 was successfully isolated in vitro, and its whole genome shared 76.9-94.3% identity with the 29 CAstV reference strains. JS202103 caused hatchability reduction, dead embryos, kidney disease and visceral gout in chicken embryos. Moreover, this is the also the initial study focusing on diverse CAstV strains including subgroups Biii, Biv, and Bv circulate in China. The current work contributes to improving our understanding of CAstV isolates in China, and it will also provide references for developing efficient measures to control this virus.
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Affiliation(s)
- Xiaofeng Han
- Wen’s Foodstuffs Group Co., Ltd., Yunfu, Guangdong, China
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3
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Ren D, Zhang X, Zhang W, Lian M, Meng X, Li T, Xie Q, Shao H, Wan Z, Qin A, Gao W, Ye J. A peptide-based ELISA for detection of antibodies against novel goose astrovirus type 1. J Virol Methods 2023; 312:114646. [PMID: 36356679 DOI: 10.1016/j.jviromet.2022.114646] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/29/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022]
Abstract
Goose gout disease is a high morbidity and mortality disease caused by novel serotype 1 goose astrovirus (GAstV-1), which has resulted in huge economic loss to the goose industry of China. However, few diagnostic methods have been developed for serological surveillance of GAstV-1. In our previous study, several novel B cell epitopes were identified in the ORF2 protein of GAstV-1. In this study, one novel peptide of 627-646 aa in the ORF2 recognized by monoclonal antibody (mAb) 6C6 was used as an antigen to develop an efficient peptide-based ELISA (pELISA) for detection of antibodies against GAstV-1. Specificity analysis showed that the pELISA only reacted with sera against GAstV-1, but not with sera against other pathogens tested. The sensitivity of the pELISA in detecting positive sera was higher than that of the IFA (Indirect immunofluorescence assay). The coefficients of variation (CV) of the intra-assay and inter-assay were both < 10%, indicating that the reproducibility of pELISA was good. For detection of clinical samples, the pELISA had 87.5% concordance with the IFA. Our data demonstrate that the pELISA generated here provides an accurate, rapid, and economical method for the detection antibodies against GAstV-1 for serological surveillance.
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Affiliation(s)
- Dan Ren
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Centre for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, China.
| | - Xinyun Zhang
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Centre for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, China.
| | - Wei Zhang
- Sinopharm Yangzhou VAC Biological Engineering Co., Ltd, Yangzhou, Jiangsu 225127, China.
| | - Mingjun Lian
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Centre for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, China; Sinopharm Yangzhou VAC Biological Engineering Co., Ltd, Yangzhou, Jiangsu 225127, China.
| | - Xianchen Meng
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Centre for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, China.
| | - Tuofan Li
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Centre for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, China.
| | - Quan Xie
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Centre for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, China.
| | - Hongxia Shao
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Centre for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, China.
| | - Zhimin Wan
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Centre for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, China.
| | - Aijian Qin
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Centre for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, China.
| | - Wei Gao
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Centre for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, China.
| | - Jianqiang Ye
- Key Laboratory of Jiangsu Preventive Veterinary Medicine, Key Laboratory for Avian Preventive Medicine, Ministry of Education, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Centre for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, China.
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4
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De la Torre D, Astolfi-Ferreira CS, Chacón RD, Piantino Ferreira AJ. Molecular characterization of chicken astrovirus from high embryonic mortality based on the capsid protein (ORF2) gene, in Brazil. Avian Pathol 2022; 51:457-464. [PMID: 35791746 DOI: 10.1080/03079457.2022.2098691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
ABSTRACTIn recent years, reports of chicken astrovirus (CAstV) infections in commercial birds have increased, affecting the poultry industries in Brazil and worldwide. The objective of this study was to use molecular methods to characterize the CAstV found in one breeding and three different incubation companies that reported increased embryonic mortality and the appearance of birds with white chick syndrome (WCS). RT-qPCR with SyBR green chemistry were used to determine the presence of the virus in the feces of breeders, organs of newborn chickens, and unhatched embryos. By sequencing the ORF2 that codes for the viral capsid, the strains responsible for these clinical signs were characterized using strains previously reported in Brazil, North America, Europe, and Asia. The percentage of identity of the amino acid sequences compared with those from group A was less than 41% (37.01% to 40.52%) and the identity with those from subgroups Bi, Bii, and Biii was less than 90% (81.81% to 89.85%). Therefore, the sequences were characterized within subgroup Biv with identity greater than 95% (95.26% to 99.59%), together with CAstV strains previously found in Brazil, Canada, and the United States. Using antigenicity prediction tools, 14 highly conserved peptides located on the surface of the capsid protein were considered potentially responsible for inducing the immune response in the host. Our data provide important information related to the increase in embryo mortality in vertically infected birds, reinforcing the potential association of WCS with CAstV Biv subgroup.
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Affiliation(s)
- David De la Torre
- Department of Pathology, School of Veterinary Medicine, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, CEP 05508-900, São Paulo, SP, Brazil.,LABIGEN, Laboratory of Molecular Biology and Genetics, Quito EC170521, Ecuador
| | - Claudete S Astolfi-Ferreira
- Department of Pathology, School of Veterinary Medicine, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, CEP 05508-900, São Paulo, SP, Brazil
| | - Ruy D Chacón
- Department of Pathology, School of Veterinary Medicine, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, CEP 05508-900, São Paulo, SP, Brazil.,Inter-units Program in Biotechnology, University of São Paulo, Av. Prof. Dr. Orlando M. Paiva, 87, CEP 05508-270, São Paulo, Brazil
| | - Antonio J Piantino Ferreira
- Department of Pathology, School of Veterinary Medicine, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, CEP 05508-900, São Paulo, SP, Brazil
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5
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Raji AA, Omar AR. Pathogenesis of Chicken Astrovirus Related Illnesses. Front Vet Sci 2022; 9:899901. [PMID: 35754540 PMCID: PMC9231584 DOI: 10.3389/fvets.2022.899901] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 04/26/2022] [Indexed: 11/30/2022] Open
Abstract
Of the several known viruses, chicken astrovirus (CAstV) has been associated with diarrhea, runting-stunting syndrome, severe kidney disease, and gout, and white chick syndrome (WCS) in young broiler chicks. Discovered in 2004, CAstV consists of two genogroups with an expanding subgroup because of the diversity exhibited in its viral capsid sequence. Despite these findings, there exists a dearth of knowledge on its pathogenesis. This review highlights the pathogenesis and development of in vivo and in vitro models.
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Affiliation(s)
- Abdullahi Abdullahi Raji
- Department of Veterinary Pathology, Faculty of Veterinary Medicine, Usmanu Danfodiyo University Sokoto, Sokoto, Nigeria
| | - Abdul Rahman Omar
- Laboratory of Vaccine and Biomolecules, Institute of Bioscience and Department of Veterinary pathology and Microbiology Universiti Putra Malaysia, Serdang, Malaysia
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6
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Shen Q, Zhuang Z, Lu J, Qian L, Li G, Kanton AG, Yang S, Wang X, Wang H, Yin J, Zhang W. Genome Analysis of Goose-Origin Astroviruses Causing Fatal Gout in Shanghai, China Reveals One of Them Belonging to a Novel Type Is a Recombinant Strain. Front Vet Sci 2022; 9:878441. [PMID: 35782540 PMCID: PMC9247502 DOI: 10.3389/fvets.2022.878441] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 04/29/2022] [Indexed: 11/23/2022] Open
Abstract
Since 2014, a goose-origin astroviruses disease, which is characterized by urate precipitation in viscera, has rapidly spread to major commercial goose provinces leading to huge economic losses in the poultry industry of China. In March 2020, a goose farm locates in Shanghai, China, where there was no goose astroviruses (GAstVs) infection reported before, experienced an outbreak of gout disease in geese. The etiological investigation was carried out by virus metagenomics and bacterial culture and two GAstVs strains, designated as CHSH01 and CHSH02, were determined. Their complete genomes were measured to 7,154 and 7,330 nt in length, excludingthe poly(A) tail, respectively, and had different genomic features and classifications. CHSH01 shared a very low sequence identity with other strains in terms of not only the complete genome but also different ORFs. Phylogenetic analysis showed CHSH02 belonged to GAstV-2, which was the predominant species in the geese with gout in China according to the previous study. Meanwhile, CHSH01 strain displayed low identity with other AstVs, and phylogenetic and recombination analysis suggested that CHSH01 belonging to a novel type was a recombinant strain, one parent strain of which was an AstV determined from a bar-headed goose (a kind of migrant bird). Moreover, the primary epidemiological investigation showed that the two strains were prevalent in the same goose farm and co-infection occurred. These findings arise the potential cross-species transmission of CHSH01 between domestic and wild fowl.
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Affiliation(s)
- Quan Shen
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Zi Zhuang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Juan Lu
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Lingling Qian
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Guangquan Li
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Aaron Gia Kanton
- Department of Orthopedics, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Shixing Yang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Xiaochun Wang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Huiying Wang
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai, China
- *Correspondence: Huiying Wang
| | - Jun Yin
- Nanjing Customs District, Nanjing, China
- Jun Yin
| | - Wen Zhang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
- Wen Zhang
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Extensive genetic heterogeneity and molecular characteristics of emerging astroviruses causing fatal gout in goslings. Poult Sci 2022; 101:101888. [PMID: 35550999 PMCID: PMC9108738 DOI: 10.1016/j.psj.2022.101888] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/20/2022] [Accepted: 03/22/2022] [Indexed: 11/22/2022] Open
Abstract
Since 2017, outbreaks of gosling astroviruses (GoAstV) causing the major symptoms related to gout in geese have posed a threat to China's poultry industry and caused huge economic losses. In this study, tissue samples from goslings with gout and urate deposition as the main symptoms were taken from 14 goose farms in different regions of China and screened for pathogen infection. The infection rate of GoAstV was 100%, whereas the infection rates of goose parvovirus, reovirus, Tembusu virus, and goose hemorrhagic polyomavirus were 2, 4, 0, and 0%, respectively. In total, 14 GoAstV strains were isolated and their complete genomes were sequenced. Based on the phylogenetic trees, the 14 isolated strains were classified as GoAstV (G-I) and were considered distant from strains belonging to GoAstV (G-II). The multiple sequence alignments indicated a tremendous amount of amino acid mutations in some parts of the encoding proteins of these strains; the main mutations were located in open reading frames (ORFs)—ORF1a and ORF2, such as M533V and F568S in ORF1a and A614T in ORF2. On the other hand, Further, 2 of the 14 GoAstV strains were possibly derived through inter-GoAstV-I recombination. Taken together, these findings indicate that GoAstVs are evolving in a more complex manner and have diverse transmission routes.
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8
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An Insight into the Molecular Characteristics and Associated Pathology of Chicken Astroviruses. Viruses 2022; 14:v14040722. [PMID: 35458451 PMCID: PMC9024793 DOI: 10.3390/v14040722] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/19/2022] [Accepted: 03/23/2022] [Indexed: 02/04/2023] Open
Abstract
The chicken astrovirus (CAstV) is a ubiquitous enteric RNA virus that has been associated mainly with conditions, such as the runting-stunting syndrome, severe kidney disease, visceral gout, and white chick syndrome, in broiler-type chickens worldwide. Sequence analysis of the capsid genes’ amino acids of the strains involved in these conditions reveals a genetic relationship and diversity between and within the CAstV genogroups and subgroups based on phylogenetic analysis, genetic distance (p-dist), and pathogenicity. While the two genogroups (A and B) are demarcated phylogenetically, their pairwise amino acid sequence identity is 39% to 42% at a p-dist of 0.59 to 0.62. Group-A consists of three subgroups (Ai, Aii, and Aiii) with an inter- and intra-subgroup amino acid identity of 78% to 82% and 92% to 100%, respectively, and a p-dist of 0.18 to 0.22. On the other hand, the six subgroups (Bi, Bii, Biii, Biv, Bv, and Bvi) in Group-B, with a p-dist of 0.07 to 0.18, have an inter- and intra-subgroup amino acid identity of 82% to 93% and 93% to 100%, respectively. However, these groupings have little to no effect on determining the type of CAstV-associated pathology in chickens.
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Ali MZ, Moula MM, Bhuiyan ZA, Giasuddin M, Shin HJ. First Isolation and Molecular Characterization of Chicken Astrovirus and Avian Nephritis Virus in Chickens in Bangladesh. Front Vet Sci 2021; 8:769489. [PMID: 34926641 PMCID: PMC8672296 DOI: 10.3389/fvets.2021.769489] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 11/04/2021] [Indexed: 11/13/2022] Open
Abstract
Chicken astrovirus (CAstV) and avian nephritis virus (ANV) are enteric viruses of poultry and have infected a wide range of poultry species worldwide, causing runting-stunting syndrome (RSS), which requires virus screening and results in serious economic damage. No confirmed cases have been reported from Bangladesh. In the present study, CAstV and ANV were monitored in Bangladesh. We monitored samples for CAstV and ANV and compared their genomic sequences to other reference strains. We found 8/31 flocks (25.8%) were positive for CAstV, 6/31 flocks (19.3%) had mixed infection of CAstV and ANV, and 1 flock (3.2%) was positive for ANV. Only ANV and a combination of CAstV and ANV were found in broilers and broiler breeders, but CAstV was found in all types of chickens. We isolated two of each from CAstV and ANV through specific pathogen-free chicken embryonated eggs via the yolk sac route. Phylogenetic analysis based on the ORF1b conserved region of CAstV and ANV suggested that the locally circulating strain was closely related to the strains isolated from India and Brazil. This report is the first molecular characterization of CAstV and ANV in Bangladesh. This study highlights that CAstV and ANV are circulating in Bangladeshi poultry.
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Affiliation(s)
- Md Zulfekar Ali
- Animal Health Research Division, Bangladesh Livestock Research Institute, Dhaka, Bangladesh
| | | | - Zafar Ahmed Bhuiyan
- Nourish Central Poultry Laboratory, Nourish Poultry and Hatchery Ltd., Dhaka, Bangladesh
| | - Md Giasuddin
- Animal Health Research Division, Bangladesh Livestock Research Institute, Dhaka, Bangladesh
| | - Hyun-Jin Shin
- College of Veterinary Medicine, Chungnam National University, Daejeon, South Korea.,Research Institute of Veterinary Medicine, Chungnam National University, Daejeon, South Korea
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10
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Identification of three novel B cell epitopes in ORF2 protein of the emerging goose astrovirus and their application. Appl Microbiol Biotechnol 2021; 106:855-863. [PMID: 34921327 DOI: 10.1007/s00253-021-11711-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/19/2021] [Accepted: 11/24/2021] [Indexed: 10/19/2022]
Abstract
The outbreak of goose gout disease caused by novel goose astrovirus type 1 (GAstV-1) has resulted in huge economic losses to the goose industry in China since 2017. However, little is known about the B cell epitopes in major antigen of GAstV-1 and the serological approach for detection of GAstV-1 is not available. In this study, three novel monoclonal antibodies (mAbs) against the ORF2 protein were first generated and designated as 3G6, 5H7, and 6C6, respectively. Epitope mapping revealed that mAb 3G6, 5H7, and 6C6 recognized 695AVRFEKGGHE704, 685EKALSAPQAG694, and 635DDDPLSDVTS644 in ORF2, respectively. Sequence alignments found that the three epitopes were highly conserved in GAstV-1 but not in other AAstV members. Moreover, a mAb-based sandwich ELISA for the detection of GAstV-1 was first developed using mAb 6C6. The sandwich ELISA only reacted with GAstV-1 but not with GAstV-2 and the other goose-associated viruses tested. The limit of the detection of the sandwich ELISA reaches 1.58 × 103 TCID50/mL of GAstV-1. Notably, mAb 6C6 could also efficiently react with the GAstV-1 in tissue frozen sections of the clinical infected goose through IFA. The mAbs generated in this study pave the way for further studying on the role of ORF2 in the infection and pathogenesis of GAstV, and the sandwich ELISA and the tissue frozen section-IFA approaches established here provide efficient and rapid serological diagnostic tools for detection of GAstV-1. KEY POINTS: • Three novel B cell epitopes were identified in ORF2 of GAstV-1. • mAb-based ELISA and IFA for detection of GAstV-1 were developed.
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11
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Raji AA, Ideris A, Bejo MH, Omar AR. Molecular characterisation and pathogenicity of novel Malaysian chicken astrovirus isolates. Avian Pathol 2021; 51:51-65. [PMID: 34726999 DOI: 10.1080/03079457.2021.2000939] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
ABSTRACTChicken astrovirus (CAstV) has for over a decade been associated with runting stunting syndrome (RSS), severe kidney disease and visceral gout, and white chick syndrome (WCS). However, molecular characteristics and pathogenicity of the virus in day-old specific pathogen-free (SPF) chicks is scarce. This study focused on the characterisation of near-complete genome of three Malaysian CAstV isolates following virus propagation in specific-pathogen-free (SPF) embryonated chicken eggs (ECE) and pathogenicity in day-old SPF chicks. The three isolates demonstrated unique features including a point mutation in their intergenic regions and an additional stem-loop II-like motif (s2 m) in ORF-2. Pairwise sequence comparison and phylogenetic analysis of the ORF-2 amino acid of the three isolates revealed an identity share of 86 to 91% with group B CAstVs while forming a new subgroup in addition to the known four subgroups (Bi, Bii, Biii and Biv) that exhibit high identity of between 95 to 100% within the subgroups. In the pathogenicity study, birds in the infected and exposed sentinel groups exhibited lethargy and diarrhoea 3 days post-inoculation (dpi) that declined by 6 dpi and 20% growth retardation by 9 dpi. Mild lymphocytic aggregates in the duodenum, tubular degeneration and interstitial nephritis were observed in the intestines and kidneys, respectively, in both groups. In addition, the mean virus copy number of the cloacal swabs were log10 13.23 at 3 dpi and log10 9.04 at 6 dpi for the infected and exposed sentinels, respectively. The study suggests that the Malaysian isolates should be assigned to a new subgroup, Bv within group B CAstV.
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Affiliation(s)
- Abdullahi Abdullahi Raji
- Laboratory of Vaccine and Biomolecule, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.,Department of Veterinary Pathology, Faculty of Veterinary Medicine, Usmanu Danfodiyo University Sokoto, PMB 2346, Sokoto, Nigeria
| | - Aini Ideris
- Laboratory of Vaccine and Biomolecule, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.,Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Mohd Hair Bejo
- Laboratory of Vaccine and Biomolecule, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.,Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Abdul Rahman Omar
- Laboratory of Vaccine and Biomolecule, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.,Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
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12
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Van Borm S, Steensels M, Mathijs E, Vandenbussche F, van den Berg T, Lambrecht B. Metagenomic sequencing determines complete infectious bronchitis virus (avian Gammacoronavirus) vaccine strain genomes and associated viromes in chicken clinical samples. Virus Genes 2021; 57:529-540. [PMID: 34626348 PMCID: PMC8501334 DOI: 10.1007/s11262-021-01872-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 09/24/2021] [Indexed: 12/24/2022]
Abstract
Infectious bronchitis virus (IBV, genus Gammacoronavirus) causes an economically important and highly contagious disease in chicken. Random primed RNA sequencing was applied to two IBV positive clinical samples and one in ovo-passaged virus. The virome of a cloacal swab pool was dominated by IBV (82% of viral reads) allowing de novo assembly of a GI-13 lineage complete genome with 99.95% nucleotide identity to vaccine strain 793B. In addition, substantial read counts (16% of viral reads) allowed the assembly of a near-complete chicken astrovirus genome, while lower read counts identified the presence of chicken calicivirus and avian leucosis virus. Viral reads in a respiratory/intestinal tissue pool were distributed between IBV (22.53%), Sicinivirus (Picornaviridae, 24%), and avian leucosis virus (37.04%). A complete IBV genome with 99.95% nucleotide identity to vaccine strain H120 (lineage GI-1), as well as a near-complete avian leucosis virus genome and a partial Sicinivirus genome were assembled from the tissue sample data. Lower read counts identified chicken calicivirus, Avibirnavirus (infectious bursal disease virus, assembling to 98.85% of segment A and 69.66% of segment B closely related to D3976/1 from Germany, 2017) and avian orthoreovirus, while three avian orthoavulavirus 1 reads confirmed prior real-time RT-PCR result. IBV sequence variation analysis identified both fixed and minor frequency variations in the tissue sample compared to its in ovo-passaged virus. Metagenomic methods allow the determination of complete coronavirus genomes from clinical chicken samples while providing additional insights in RNA virus sequence diversity and coinfecting viruses potentially contributing to pathogenicity.
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Affiliation(s)
- Steven Van Borm
- Department of Animal Infectious Diseases, Sciensano, Brussels, Belgium.
| | - Mieke Steensels
- Department of Animal Infectious Diseases, Sciensano, Brussels, Belgium
| | - Elisabeth Mathijs
- Department of Animal Infectious Diseases, Sciensano, Brussels, Belgium
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13
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Zhang X, Deng T, Song Y, Liu J, Jiang Z, Peng Z, Guo Y, Yang L, Qiao H, Xia Y, Li X, Wang Z, Bian C. Identification and genomic characterization of emerging goose astrovirus in central China, 2020. Transbound Emerg Dis 2021; 69:1046-1055. [PMID: 33687791 DOI: 10.1111/tbed.14060] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 02/12/2021] [Accepted: 03/04/2021] [Indexed: 01/26/2023]
Abstract
Astroviruses are a non-enveloped virus with large host range breadth. AstV-associated gastroenteritis in human and animal, nephritis in chicken, gout in gosling and hepatitis in duckling pose great threats to public health and poultry industry. Since early 2020, continuous emergence of fatal goose astrovirus (GAstV) infections characterized by articular and visceral gout was reported in China. Here, we described two outbreaks of emerging gout disease in two different goose farms of central China. Two virulent GAstV strains, designated as HNKF-1/China/2020 and HNSQ-6/China/2020, were isolated, and the fifth passage of the isolates could cause urate crystals accumulated in the allantoic fluid and even deposited around great vessels and embryo bodies. Meanwhile, the source of these GAstV outbreaks was tracked to goose hatcheries. The prevalence of GAstV in the goose embryos with hatch failure was confirmed, and embryo-origin HNXX-6/China/2020 was further isolated. The complete genome of these three newly isolates was then sequenced and analysed. The results showed that Chinese GAstVs have formed two distinct groups, and the three GAstV isolates, as well as most of the Chinese GAstVs, belong to the G-I group. There are several amino acid mutations in the three newly identified GAstVs, such as A520T, S535R, V555I and A782T in ORF1a and Q229P in ORF2, suggesting the field stains, HNKF-1/China/2020 and HNSQ-6/China/2020, might derive from the weak goose embryo via vertical transmission. Moreover, the phylogenetic analysis of the complete viral genome and individual viral proteins revealed that Chinese GAstV strains have been constantly evolving towards more complicated and various directions. Our study reported the recently emerging GAstV outbreaks in central China, and further analysed the genetic characteristics of three virulent G-I GAstV isolates from commercial goose farms and goose hatchery, indicating the diverse transmission of the virus and providing a basis for developing effective preventive measures and control strategies.
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Affiliation(s)
- Xiaozhan Zhang
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Tongwei Deng
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Yuzhen Song
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Jian Liu
- College of Animal Science & Technology, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Zenghai Jiang
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Zhifeng Peng
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Yiwen Guo
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Lei Yang
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Hongxing Qiao
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Yanxun Xia
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Xinzheng Li
- College of Animal Science & Technology, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Zeng Wang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Chuanzhou Bian
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
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14
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Munuswamy P, Ramakrishnan S, Latheef SK, Kappala D, Mariappan AK, Kaore M, Anbazhagan K, Puvvala B, Singh KP, Dhama K. First description of natural concomitant infection of avian nephritis virus and infectious bronchitis virus reveals exacerbated inflammatory response and renal damage in broiler chicks. Microb Pathog 2021; 154:104830. [PMID: 33691178 DOI: 10.1016/j.micpath.2021.104830] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/30/2021] [Accepted: 02/17/2021] [Indexed: 10/22/2022]
Abstract
We describe the first report on spontaneous Avian Nephritis Virus (ANV) and Infectious Bronchitis Virus (IBV) concurrent infection in broiler chicks. On necropsy, the kidneys were found swollen with its parenchyma and ureters stuffed with urate flakes. Histopathologically, the renal tubular damage and inflammatory response were severe in concurrently infected birds compared to the cases infected only with ANV, which had direct correlation with significantly (p < 0.001) increased expression of IL-1 β, IL-4, IL-12, IL-13, iNOS and IFN-γ transcripts in the kidneys of concurrently infected birds. Relative decrease in IFN-β transcript levels in the concurrently infected birds indicates suppression of antiviral response; the iNOS level was manifold increased which can be attributed to the enhanced macrophage response. Nucleotide sequencing of S1-spike glycoprotein gene of IBV and RNA dependent RNA polymerase gene of ANV confirmed etiologies as Igacovirus of Gammacoronavirus and ANV-2 of Avastrovirus 2, respectively. Both ANV and IBV virus affect kidneys. Our findings suggested that concurrent infections of these two viruses might have enhanced the transcripts of Th1, Th2 and proinflammatory cytokines with reduced IFN-β transcripts resulting in decreased host innate antiviral mechanisms leading to exacerbated renal lesions. Future experimental co-infection studies could throw more lights on pathology and pathogenesis during concurrent infections of ANV and IBV in poultry.
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Affiliation(s)
- Palanivelu Munuswamy
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, U.P, 243122, India.
| | - Saravanan Ramakrishnan
- Immunology Section, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, U.P, 243122, India
| | - Shyma K Latheef
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, U.P, 243122, India
| | - Deepthi Kappala
- Department of Veterinary Microbiology, Banaras Hindu University, Varanasi, U.P, 221005, India
| | - Asok Kumar Mariappan
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, U.P, 243122, India
| | - Megha Kaore
- Department of Veterinary Pathology, Nagpur Veterinary College, Seminary Hills, Nagpur, Maharashtra, 440006, India
| | - Karthikeyan Anbazhagan
- Department of Animal Genetic and Breeding, Rajiv Gandhi Institute of Veterinary Education and Research, Kurumbapet, Puducherry, 605009, India
| | - Bhavani Puvvala
- Department of Veterinary Microbiology, Rajiv Gandhi Institute of Veterinary Education and Research, Kurumbapet, Puducherry, 605009, India
| | - Karam Pal Singh
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, U.P, 243122, India
| | - Kuldeep Dhama
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, U.P, 243122, India
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15
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Zhao W, Wu Z, Yao Y, Qin A, Qian K. The Isolation and Molecular Characterization of an Astrovirus From "Yellow" Chickens, China. Front Vet Sci 2020; 7:581862. [PMID: 33195598 PMCID: PMC7655128 DOI: 10.3389/fvets.2020.581862] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 09/21/2020] [Indexed: 01/08/2023] Open
Abstract
Chicken astrovirus (CAstV) infection is strongly associated with kidney disease, gout, “white chicks” hatchery disease, and runting and stunting syndrome (RSS). In the present study, 82.5% of 154 clinical samples from different provinces in China were positive for CAstV by RT-PCR. One CAstV isolate, designated as AAstV/Chicken/CHN/2017/NJ01, was successfully isolated from the small intestine of “Yellow” chickens using LMH cells. The genome sequence and structure analyses revealed that NJ1701 had the typical characteristics of avian astroviruses which was genetically distinct from other Avastrovirus. This isolate was classified as Group B subgroup i based on phylogenetic analysis of complete ORF2 (capsid) amino acid sequences. Meanwhile, growth depression and hatchability reduction were observed in the chicken embryo infection experiment. The results in the current study will contribute to our understanding of chicken astrovirus in China.
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Affiliation(s)
- Wei Zhao
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Key Lab of Preventive Veterinary Medicine, Yangzhou University, Yangzhou, China.,The International Joint Laboratory for Cooperation in Agriculture and Agricultural Product Safety, Ministry of Education, Yangzhou University, Yangzhou, China
| | - Zongyi Wu
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Key Lab of Preventive Veterinary Medicine, Yangzhou University, Yangzhou, China.,The International Joint Laboratory for Cooperation in Agriculture and Agricultural Product Safety, Ministry of Education, Yangzhou University, Yangzhou, China
| | - Yongxiu Yao
- The Pirbright Institute & United Kingdom-China Centre of Excellence for Research on Avian Diseases, Pirbright, United Kingdom
| | - Aijian Qin
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Key Lab of Preventive Veterinary Medicine, Yangzhou University, Yangzhou, China.,The International Joint Laboratory for Cooperation in Agriculture and Agricultural Product Safety, Ministry of Education, Yangzhou University, Yangzhou, China
| | - Kun Qian
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Key Lab of Preventive Veterinary Medicine, Yangzhou University, Yangzhou, China.,The International Joint Laboratory for Cooperation in Agriculture and Agricultural Product Safety, Ministry of Education, Yangzhou University, Yangzhou, China.,Institute of Comparative Medicine, Yangzhou University, Yangzhou, China
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16
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Chicken Astrovirus (CAstV) Molecular Studies Reveal Evidence of Multiple Past Recombination Events in Sequences Originated from Clinical Samples of White Chick Syndrome (WCS) in Western Canada. Viruses 2020; 12:v12101096. [PMID: 32998356 PMCID: PMC7600043 DOI: 10.3390/v12101096] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 09/22/2020] [Accepted: 09/25/2020] [Indexed: 02/04/2023] Open
Abstract
In this study, we aimed to molecularly characterize 14 whole genome sequences of chicken astrovirus (CAstV) isolated from samples obtained from white chick syndrome (WCS) outbreaks in Western Canada during the period of 2014–2019. Genome sequence comparisons showed all these sequences correspond to the novel Biv group from which no confirmed representatives were published in GenBank. Molecular recombination analyses using recombination detection software (i.e., RDP5 and SimPlot) and phylogenetic analyses suggest multiple past recombination events in open reading frame (ORF)1a, ORF1b, and ORF2. Our findings suggest that recombination events and the accumulation of point mutations may have contributed to the substantial genetic variation observed in CAstV and evidenced by the current seven antigenic sub-clusters hitherto described. This is the first paper that describes recombination events in CAstV following analysis of complete CAstV sequences originated in Canada.
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17
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Molecular Characterization and Determination of Relative Cytokine Expression in Naturally Infected Day-Old Chicks with Chicken Astrovirus Associated to White Chick Syndrome. Animals (Basel) 2020; 10:ani10071195. [PMID: 32674433 PMCID: PMC7401566 DOI: 10.3390/ani10071195] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/03/2020] [Accepted: 06/30/2020] [Indexed: 01/05/2023] Open
Abstract
White chick syndrome (WCS) is an emergent disease that affects hatchability and hatched chicks, resulting in high mortality and economic losses, and is related to chicken astrovirus (CAstV). This syndrome has been reported in several countries worldwide, and groups A iii and B vi of CAstV have been determined; however, in Brazil, the virus has not been genotyped. The innate immunity of chicks affected by WCS or any CAstV is poorly understood and studied, and it is important to determine whether relative cytokine expression occurs during the early stages of the life of chicks. The aim of the present investigation is to detect and molecularly characterize CAstV associated with WCS, examine the macroscopic and microscopic lesions in the jejunum and spleen, and determine cytokine expression in the jejunum, liver, spleen and thymus of chicks naturally infected with WCS. To do so, we applied a pathological and molecular approach for CAstV detection and characterization, as well as the quantification of the relative mRNA expression of several cytokine genes. The phylogenetic analyses of the sequences obtained herein classified CAstV as uniquely belonging to group B iv, showing a high similarity of nucleotides (NT) (75.7-80.6%) and amino acids (AA) (84.2-89.9%) with the members of group B and a low similarity of NT (46.7-47.9%) and AA (37.8-38.9%) with the virus belonging in group A. CAstV was also detected and quantified in the serum, spleen, thymus and jejunum, the latter being the organ where CAstV had the highest viral concentration. However, this organ did not present any microscopical alterations. In contrast, we observed necrotic hepatitis in the liver of the affected subjects. On the other hand, we observed the activation of several T helper 1 (Th1)- and T helper 2 (Th2)-cytokines (IFN-γ, IL-2, IL-8, IL-12p40, IL-15, TGF-β4, TNF-SF-15 and t-BET), without being able to control the viral replication due to the high concentration of viral particles in some organs, principally in the gut. One possible role of these cytokines is contributing to the control of inflammation and cell protection of intestinal cells, principally during the early activation of immune responses. However, the fact that these responses are not mature enough to control the viral infection means that more studies need to be carried out to elucidate this topic.
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18
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Panigrahi S, Jindal N, Kumar P, Barua S, Kumar N, Riyesh T, Chander Y. Molecular characterization of chicken astroviruses in gout-affected commercial broiler chickens in Haryana, India. Virusdisease 2019; 30:551-561. [PMID: 31897418 PMCID: PMC6917690 DOI: 10.1007/s13337-019-00554-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 11/15/2019] [Indexed: 12/13/2022] Open
Abstract
Chicken astroviruses (CAstVs) infect young chicks and are associated with gastroenteritis, stunted growth or visceral gout (gout). True incidence and distribution of CAstVs as well as virus variants circulating in India is not well understood. In this study, 80 gout-affected broiler chicken flocks from Haryana, a north-western state of India, were tested for the presence of astroviruses by targeting the polymerase gene of both CAstV and avian nephritis virus (ANV) and capsid gene of CAstV. Of these, 22 (27.5%) flocks were found positive for CAstV, 7(8.75%) for ANV and 2 (2.5%) for both CAstV and ANV genome by reverse-transcription-polymerase chain reaction. CAstV was isolated by inoculating tissue (kidney) homogenate from gout-affected birds into specific-pathogen free embryonated chicken eggs where the infected embryos showed stunted growth with necrosis of liver and enlarged kidney with urate deposits. Capsid gene-based phylogenetic analysis revealed the clustering of CAstV strains from this study with Indian strains of serogroup Biii suggesting their antigenic relatedness. Thus the present study reveals the presence of chicken astroviruses in broiler chickens affected with gout.
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Affiliation(s)
- Sumitra Panigrahi
- Department of Veterinary Public Health and Epidemiology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana 125004 India
| | - Naresh Jindal
- Department of Veterinary Public Health and Epidemiology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana 125004 India
| | - Pawan Kumar
- Department of Animal Biotechnology, College of Veterinary Sciences, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana 125004 India
| | - Sanjay Barua
- ICAR-National Research Centre on Equines, National Centre for Veterinary Type Culture Collection, Hisar, Haryana 125001 India
| | - Naveen Kumar
- ICAR-National Research Centre on Equines, National Centre for Veterinary Type Culture Collection, Hisar, Haryana 125001 India
| | - Thachamvally Riyesh
- ICAR-National Research Centre on Equines, National Centre for Veterinary Type Culture Collection, Hisar, Haryana 125001 India
| | - Yogesh Chander
- ICAR-National Research Centre on Equines, National Centre for Veterinary Type Culture Collection, Hisar, Haryana 125001 India
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19
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Construction of a reverse genetic system for porcine astrovirus. Arch Virol 2018; 163:1511-1518. [DOI: 10.1007/s00705-018-3771-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 02/05/2018] [Indexed: 10/18/2022]
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