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Stenzel T, Dziewulska D, Łukaszuk E, Custer JM, De Koch MD, Kraberger S, Varsani A. The pigeon circovirus evolution, epidemiology and interaction with the host immune system under One Loft Race rearing conditions. Sci Rep 2024; 14:13815. [PMID: 38877168 PMCID: PMC11178769 DOI: 10.1038/s41598-024-64587-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 06/11/2024] [Indexed: 06/16/2024] Open
Abstract
This study was aimed to investigate the frequency of PiCV recombination, the kinetics of PiCV viremia and shedding and the correlation between viral replication and host immune response in young pigeons subclinically infected with various PiCV variants and kept under conditions mimicking the OLR system. Fifteen racing pigeons originating from five breeding facilities were housed together for six weeks. Blood and cloacal swab samples were collected from birds every seven days to recover complete PiCV genomes and determine PiCV genetic diversity and recombination dynamics, as well as to assess virus shedding rate, level of viremia, expression of selected genes and level of anti-PiCV antibodies. Three hundred and eighty-eight complete PiCV genomes were obtained and thirteen genotypes were distinguished. Twenty-five recombination events were detected. Recombinants emerged during the first three weeks of the experiment which was consistent with the peak level of viremia and viral shedding. A further decrease in viremia and shedding partially corresponded with IFN-γ and MX1 gene expression and antibody dynamics. Considering the role of OLR pigeon rearing system in spreading infectious agents and allowing their recombination, it would be reasonable to reflect on the relevance of pigeon racing from both an animal welfare and epidemiological perspective.
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Affiliation(s)
- Tomasz Stenzel
- Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland.
| | - Daria Dziewulska
- Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Ewa Łukaszuk
- Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Joy M Custer
- Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, Tempe, USA
| | - Matthew D De Koch
- Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, Tempe, USA
| | - Simona Kraberger
- Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, Tempe, USA
| | - Arvind Varsani
- Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, Tempe, USA.
- Structural Biology Research Unit, Department of Integrative Biomedical Sciences, University of Cape Town, Observatory, Cape Town, South Africa.
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Li X, Wang S, Li W, Wang S, Qin X, Wang J, Fu R. Investigating pigeon circovirus infection in a pigeon farm: molecular detection, phylogenetic analysis and complete genome analysis. BMC Genomics 2024; 25:369. [PMID: 38622517 PMCID: PMC11020411 DOI: 10.1186/s12864-024-10303-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 04/11/2024] [Indexed: 04/17/2024] Open
Abstract
BACKGROUND Pigeon circovirus infections in pigeons (Columba livia domestica) have been reported worldwide. Pigeons should be PiCV-free when utilized as qualified experimental animals. However, pigeons can be freely purchased as experimental animals without any clear guidelines to follow. Herein, we investigated the status quo of PiCV infections on a pigeon farm in Beijing, China, which provides pigeons for experimental use. RESULTS PiCV infection was verified in at least three types of tissues in all forty pigeons tested. A total of 29 full-length genomes were obtained and deposited in GenBank. The whole genome sequence comparison among the 29 identified PiCV strains revealed nucleotide homologies of 85.8-100%, and these sequences exhibited nucleotide homologies of 82.7-98.9% as compared with those of the reference sequences. The cap gene displayed genetic diversity, with a wide range of amino acid homologies ranging from 64.5% to 100%. Phylogenetic analysis of the 29 full-genome sequences revealed that the PiCV strains in this study could be further divided into four clades: A (17.2%), B (10.4%), C (37.9%) and D (34.5%). Thirteen recombination events were also detected in 18 out of the 29 PiCV genomes obtained in this study. Phylogenetic research using the rep and cap genes verified the recombination events, which occurred between clades A/F, A/B, C/D, and B/D among the 18 PiCV strains studied. CONCLUSIONS In conclusion, PiCV infection, which is highly genetically varied, is extremely widespread on pigeon farms in Beijing. These findings indicate that if pigeons are to be used as experimental animals, it is necessary to evaluate the impact of PiCV infection on the results.
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Affiliation(s)
- Xiaobo Li
- Institute of Laboratory Animal Resources, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China.
- National Rodent Laboratory Animal Resources Center, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China.
- National Laboratory Animal Quality Testing Center, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China.
| | - Shujing Wang
- Institute of Laboratory Animal Resources, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China
- National Rodent Laboratory Animal Resources Center, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China
- National Laboratory Animal Quality Testing Center, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China
| | - Wei Li
- Institute of Laboratory Animal Resources, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China
- National Rodent Laboratory Animal Resources Center, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China
- National Laboratory Animal Quality Testing Center, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China
| | - Shasha Wang
- Institute of Laboratory Animal Resources, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China
- National Rodent Laboratory Animal Resources Center, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China
- National Laboratory Animal Quality Testing Center, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China
| | - Xiao Qin
- Institute of Laboratory Animal Resources, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China
- National Rodent Laboratory Animal Resources Center, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China
- National Laboratory Animal Quality Testing Center, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China
| | - Ji Wang
- Institute of Laboratory Animal Resources, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China.
| | - Rui Fu
- National Laboratory Animal Quality Testing Center, National Institutes for Food and Drug Control, Beijing, 102629, People's Republic of China.
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3
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Sahindokuyucu I, Yazici Z, Barry G. A retrospective molecular investigation of selected pigeon viruses between 2018–2021 in Turkey. PLoS One 2022; 17:e0268052. [PMID: 36037167 PMCID: PMC9423643 DOI: 10.1371/journal.pone.0268052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 08/15/2022] [Indexed: 11/27/2022] Open
Abstract
A recent first detection of pigeon aviadenovirus-1 and pigeon circovirus co-infection associated with Young Pigeon Disease Syndrome (YPDS) in a pigeon flock in Turkey, prompted a study focused on documenting the distribution of Pigeon aviadenovirus (PiAdV-1 and PiAdV-2), Pigeon circovirus (PiCV), Columbid alphaherpesvirus 1 (pigeon herpesvirus (PiHV)) and Fowl aviadenovirus (FAdV) in the country. These viruses were selected as they are associated with severe disease in pigeons across the world. A total of 192 cloacal swabs were collected from young (<1 year old) pigeons from 16 different private pigeon flocks across Turkey, between 2018 and 2021 as part of routine diagnostic sampling. PiCV genetic material was the most frequently detected 4/16 (25%), PiAdV-1 and CoHV-1 DNA were both found in one flock each, while neither PiAdV-2 and FAdV were detected in any of the studied pigeon flocks. PiCV and PiHV genetic material were both detected in the same pigeon flock’s cloacal samples as a co-infection with the identification of PiHV being a first in Turkey.
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Affiliation(s)
- Ismail Sahindokuyucu
- Bornova Veterinary Control Institute, Poultry Diseases Diagnostic Laboratory, Ministry of Agriculture and Forestry, Izmir, Turkey
- Now at Eville&Jones (GB) Limited Century House, Leeds, United Kingdom
| | - Zafer Yazici
- Department of Veterinary Virology, Faculty of Veterinary Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Gerald Barry
- Veterinary Science Center, School of Veterinary Medicine, University College of Dublin, Dublin, Ireland
- * E-mail:
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Silva BBI, Urzo MLR, Encabo JR, Simbulan AM, Lunaria AJD, Sedano SA, Hsu KC, Chen CC, Tyan YC, Chuang KP. Pigeon Circovirus over Three Decades of Research: Bibliometrics, Scoping Review, and Perspectives. Viruses 2022; 14:1498. [PMID: 35891478 PMCID: PMC9317399 DOI: 10.3390/v14071498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/03/2022] [Accepted: 07/04/2022] [Indexed: 11/22/2022] Open
Abstract
The pigeon circovirus (PiCV), first described in the literature in the early 1990s, is considered one of the most important infectious agents affecting pigeon health. Thirty years after its discovery, the current review has employed bibliometric strategies to map the entire accessible PiCV-related research corpus with the aim of understanding its present research landscape, particularly in consideration of its historical context. Subsequently, developments, current knowledge, and important updates were provided. Additionally, this review also provides a textual analysis examining the relationship between PiCV and the young pigeon disease syndrome (YPDS), as described and propagated in the literature. Our examination revealed that usages of the term 'YPDS' in the literature are characterizations that are diverse in range, and neither standard nor equivalent. Guided by our understanding of the PiCV research corpus, a conceptualization of PiCV diseases was also presented in this review. Proposed definitions and diagnostic criteria for PiCV subclinical infection (PiCV-SI) and PiCV systemic disease (PiCV-SD) were also provided. Lastly, knowledge gaps and open research questions relevant to future PiCV-related studies were identified and discussed.
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Affiliation(s)
- Benji Brayan Ilagan Silva
- International Degree Program in Animal Vaccine Technology, International College, National Pingtung University of Science and Technology, Pingtung 912, Taiwan;
| | - Michael Louie R. Urzo
- Microbiology Division, Institute of Biological Sciences, College of Arts and Sciences, University of the Philippines Los Baños, Los Baños 4031, Laguna, Philippines; (M.L.R.U.); (J.R.E.); (A.M.S.); (A.J.D.L.)
- Graduate School, University of the Philippines Los Baños, Los Baños 4031, Laguna, Philippines
| | - Jaymee R. Encabo
- Microbiology Division, Institute of Biological Sciences, College of Arts and Sciences, University of the Philippines Los Baños, Los Baños 4031, Laguna, Philippines; (M.L.R.U.); (J.R.E.); (A.M.S.); (A.J.D.L.)
| | - Alea Maurice Simbulan
- Microbiology Division, Institute of Biological Sciences, College of Arts and Sciences, University of the Philippines Los Baños, Los Baños 4031, Laguna, Philippines; (M.L.R.U.); (J.R.E.); (A.M.S.); (A.J.D.L.)
| | - Allen Jerard D. Lunaria
- Microbiology Division, Institute of Biological Sciences, College of Arts and Sciences, University of the Philippines Los Baños, Los Baños 4031, Laguna, Philippines; (M.L.R.U.); (J.R.E.); (A.M.S.); (A.J.D.L.)
| | - Susan A. Sedano
- Veterinary Vaccines Laboratory, National Institute of Molecular Biology and Biotechnology, University of the Philippines Los Baños, Los Baños 4031, Laguna, Philippines;
| | - Keng-Chih Hsu
- Language Center, National Pingtung University of Science and Technology, Pingtung 912, Taiwan; (K.-C.H.); (C.-C.C.)
| | - Chia-Chi Chen
- Language Center, National Pingtung University of Science and Technology, Pingtung 912, Taiwan; (K.-C.H.); (C.-C.C.)
- You Guan Yi Biotechnology Company, Kaohsiung 807, Taiwan
| | - Yu-Chang Tyan
- Department of Medical Imaging and Radiological Sciences, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- School of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Graduate Institute of Animal Vaccine Technology, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Kuo-Pin Chuang
- International Degree Program in Animal Vaccine Technology, International College, National Pingtung University of Science and Technology, Pingtung 912, Taiwan;
- School of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Graduate Institute of Animal Vaccine Technology, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
- School of Dentistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Companion Animal Research Center, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
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5
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Stenzel T, Dziewulska D, Tykałowski B, Koncicki A. The Clinical Infection with Pigeon Circovirus (PiCV) Leads to Lymphocyte B Apoptosis But Has No Effect on Lymphocyte T Subpopulation. Pathogens 2020; 9:pathogens9080632. [PMID: 32756467 PMCID: PMC7460237 DOI: 10.3390/pathogens9080632] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 07/31/2020] [Accepted: 08/01/2020] [Indexed: 01/01/2023] Open
Abstract
The pathology of pigeon circovirus (PiCV) is still unknown, but it is regarded as an immunosuppressant. This study aimed to find a correlation between PiCV natural infection and immunosuppression. The study was conducted with 56 pigeons divided into the following groups: PiCV-positive but showing (group S) or not (group I) non-specific clinical symptoms and asymptomatic pigeons negative for PiCV (group H). The percentage and apoptosis of T CD3+ and B IgM+ splenocytes; the expression of CD4, CD8, and IFN-γ genes in splenic mononuclear cells; the number of PiCV viral loads in the bursa of Fabricius; and the level of anti-PiCV antibodies were analyzed. The results showed that the percentage of B IgM+ cells was almost two-fold lower in group S than in group H, and that ca. 20% of the lymphocytes were apoptotic. No increased apoptosis was detected in TCD3+ subpopulation. The PiCV viral loads were approximately one thousand and ten thousand times higher in group S than in groups I and H, respectively. Our results indicate a possible correlation between the number of PiCV viral loads and severity of PiCV infection and confirm that PiCV infection leads to the suppression of humoral immunity by inducing B lymphocyte apoptosis.
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Affiliation(s)
- Tomasz Stenzel
- Department of Poultry Diseases, Faculty Veterinary Medicine, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland; (D.D.); (A.K.)
- Correspondence: ; Tel.: +48-89-523-38-11
| | - Daria Dziewulska
- Department of Poultry Diseases, Faculty Veterinary Medicine, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland; (D.D.); (A.K.)
| | - Bartłomiej Tykałowski
- Department of Microbiology and Clinical Pathology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland;
| | - Andrzej Koncicki
- Department of Poultry Diseases, Faculty Veterinary Medicine, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland; (D.D.); (A.K.)
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Influence of pigeon interferon alpha (PiIFN-α) on pigeon circovirus (PiCV) replication and cytokine expression in Columba livia. Vet Microbiol 2020; 242:108591. [PMID: 32122595 DOI: 10.1016/j.vetmic.2020.108591] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 12/31/2019] [Accepted: 01/20/2020] [Indexed: 02/08/2023]
Abstract
Pigeon circovirus (PiCV) is the most diagnosed virus in pigeons (Columba livia) and have been studied and reported globally. PiCV infections can lead to immunosuppression and pigeons infected with PiCV can result to lymphocyte apoptosis and atrophy of immune organs. Young pigeon disease syndrome (YPDS) is a complex disease and believed that PiCV could be one of the agents leading to this syndrome. An effective treatment regimen is needed to control the spread of PiCV in pigeons. In this study pigeon interferon alpha (PiIFN-α) was cloned and expressed and its antiviral effects were tested against fowl adenovirus type 4 (FAdV-4) in vitro and PiCV in vivo. No detectable levels of FAdV-4 viral genome in LMH cells stimulated with 300 μg/mL PiIFN-α were found. Additionally, PiIFN-α was stable at different temperature and pH for 4 h, and no reduction in antiviral activity was observed in untreated and treated cells. In pigeons naturally and experimentally infected by PiCV, no detectable levels of PiCV virus titers were found after treatment with PiIFN-α. Cytokine and ISG expression levels in liver and spleen samples were detected and IFN-γ and Mx1 genes were dominantly up-regulated following PiIFN-α treatment (p < 0.05). This study demonstrated that PiCV can be inhibited by administration of PiIFN-α and PiFN-α can be used as a therapeutic approach to prevent the spread of PiCV in pigeons.
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Stenzel T, Dziewulska D, Śmiałek M, Tykałowski B, Kowalczyk J, Koncicki A. Comparison of the immune response to vaccination with pigeon circovirus recombinant capsid protein (PiCV rCP) in pigeons uninfected and subclinically infected with PiCV. PLoS One 2019; 14:e0219175. [PMID: 31251772 PMCID: PMC6599111 DOI: 10.1371/journal.pone.0219175] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 06/18/2019] [Indexed: 11/17/2022] Open
Abstract
Infections with immunosuppressive pigeon circovirus (PiCV) pose the most severe health problem to the global pigeon breeding. The vaccination with immunogenic PiCV recombinant capsid protein (PiCV rCP) is a potential tool for disease control. Because of the high prevalence of PiCV asymptomatic infections, the subclinically infected pigeons will be vaccinated in practice. The aim of this study was to answer a question if vaccination of asymptomatic, infected with PiCV pigeons induces a similar immune response to PiCV rCP as in uninfected birds. One hundred and twenty 6-week-old carrier pigeons were divided into 4 groups (2 groups of naturally infected and uninfected with PiCV individuals). Birds from groups V and V1 were vaccinated twice with PiCV rCP mixed with an adjuvant, whereas pigeons from groups C and C1 were immunized with an adjuvant only. The expression of genes encoding IFN-γ, CD4, and CD8 T lymphocyte receptors; the number of anti-PiCV rCP IgY-secreting B cells (SBC) and anti-PiCV rCP IgY were evaluated 2, 21, 39 and 46 days post vaccination (dpv). Study results showed that the expression of CD8 and IFN-γ genes was higher in both groups of infected pigeons than in the uninfected birds, irrespective of vaccination. In the uninfected birds, the expression of these genes was insignificantly higher in the vaccinated pigeons. The anti-PiCV rCP IgY-SBC were detected on 2 and 23 dpv and seroconversion was noted on 23 and 39 dpv in V and V1 groups, respectively. In the light of the results obtained, it could be concluded that pigeon circovirus recombinant capsid protein elicits the immune response in both naturally infected and uninfected pigeons, but its rate varies depending on PiCV infectious status. The infection with PiCV masks the potential cellular immune response to the vaccination with PiCV rCP and leads to the suppression of humoral immunity.
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Affiliation(s)
- Tomasz Stenzel
- Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Daria Dziewulska
- Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Marcin Śmiałek
- Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Bartłomiej Tykałowski
- Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Joanna Kowalczyk
- Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Andrzej Koncicki
- Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
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Zhuang QY, Qiu Y, Pan ZH, Wang SC, Wang B, Wu WK, Yu JM, Yi Y, Sun FL, Wang KC. Genome sequence characterization of canine parvoviruses prevalent in the Sichuan province of China. Transbound Emerg Dis 2019; 66:897-907. [PMID: 30536738 DOI: 10.1111/tbed.13100] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 11/07/2018] [Accepted: 12/04/2018] [Indexed: 12/25/2022]
Abstract
Canine parvovirus 2 (CPV-2) infection is responsible for large numbers of animal deaths worldwide and is one of the most dangerous infectious diseases in young puppies. Twenty-four rectal swabs were collected from dogs with clinical signs of vomiting and haemorrhagic diarrhoea and were initially verified to be infected with CPV-2 using colloidal gold test strips. From the 24 CPV-positive samples, complete genome of 5050-5054 nucleotides was sequenced with a next-generation sequencing platform. Characteristics of the Open Reading Frames from different CPV-2 strains detected in this study were analyzed. Several VP2 point mutations were discovered, and demonstrated the co-circulation of new CPV-2a, new CPV-2b and CPV-2c in Sichuan province of China. The analysis results of the Chinese CPV-2 retrieved from the NCBI nucleotide, showed that new CPV-2a has become the predominant variant in some provinces of China. Phylogenetic analysis of global VP2 and NS1 nucleotide sequences revealed certain correlations among geographical regions, types and circulating time, which lays the foundation for further research concerning the epidemiology, genetic variation, vaccination and molecular evolutionary relationships of the CPV-2 identified at different times and from different regions.
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Affiliation(s)
- Qing-Ye Zhuang
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Yuan Qiu
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Zi-Hao Pan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Su-Chun Wang
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Bo Wang
- Chengdu Hongcheng Animal Hospital, Sichuan, China
| | - Wan-Kun Wu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Jian-Min Yu
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Ying Yi
- Qingdao Municipal Center for Disease Control and Prevention, Qingdao, Shandong, China
| | - Fu-Liang Sun
- Department of Veterinary Medicine, College of Agriculture, Yanbian University, Yanji, China
| | - Kai-Cheng Wang
- China Animal Health and Epidemiology Center, Qingdao, Shandong, China
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9
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Immunogenicity of Pigeon Circovirus Recombinant Capsid Protein in Pigeons. Viruses 2018; 10:v10110596. [PMID: 30384424 PMCID: PMC6265742 DOI: 10.3390/v10110596] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 10/18/2018] [Accepted: 10/30/2018] [Indexed: 12/21/2022] Open
Abstract
Pigeon circovirus (PiCV) is the most frequently diagnosed virus in pigeons and is thought to be one of the causative factors of a complex disease called the young pigeon disease syndrome (YPDS). The development of a vaccine against this virus could be a strategy for YPDS control. Since laboratory culture of PiCV is impossible, its recombinant capsid protein (rCP) can be considered as a potential antigen candidate in sub-unit vaccines. The aim of this basic research was to evaluate the immune response of pigeons to PiCV rCP. Sixty six-week-old carrier pigeons were divided into two groups (experimental immunized with PiCV rCP mixed with an adjuvant, and control immunized with an adjuvant only), and immunized twice in a 21-day interval. On the day of immunization and on two, 23, 39, and 46 days post first immunization (dpv), samples of blood, spleen, and bursa of Fabricius were collected from six birds from each group to examine anti-PiCV rCP IgY, anti-PiCV rCP IgY-secreting B cells (SBC), IFN-γ gene expression, and percentage of T CD3+, CD4+, CD8+, and B IgM+ lymphocytes. The results indicated a correct immune response to PiCV rCP both in humoral and cell-mediated immunity, which was manifested by seroconversion since 23 dpv, by a significantly higher anti-PiCV rCP IgY-SBC number on two and 23 dpv, and significantly higher IFN-γ gene expression since two dpv. There were no significant differences or trends noted between particular T and B lymphocyte subpopulations. To conclude, PiCV rCP may be deemed immunogenic and could be considered as an antigen candidate in sub-unit vaccines against PiCV infections in pigeons.
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Stenzel T, Koncicki A. The epidemiology, molecular characterization and clinical pathology of circovirus infections in pigeons - current knowledge. Vet Q 2017; 37:166-174. [PMID: 28463055 DOI: 10.1080/01652176.2017.1325972] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The first cases of circovirus infections in pigeons were documented less than 25 years ago. Since then, circovirus infections have been reported on nearly all continents. The specificity of pigeon breeding defies biosecurity principles, which could be the reason for the high prevalence of PiCV infections. PiCV infections in pigeons lead to atrophy of immune system organs and lymphocyte apoptosis. Infected birds could be more susceptible to infections of the respiratory and digestive tract. PiCV has been associated with the young pigeon disease syndrome (YPDS). PiCVs are characterized by high levels of genetic diversity due to frequent point mutations, recombination processes in the PiCV genome and positive selection. Genetic recombinations and positive selection play the key role in the evolution of PiCV. A protocol for culturing PiCV under laboratory conditions has not yet been developed, and traditional vaccines against the infection are not available. Recombinant capsid proteins for detecting anti-PiCV antibodies have been obtained, and these antigens can be used in the production of diagnostic tests and subunit vaccines against PiCV infections. However, YPDS has complex etiology, and it remains unknown whether immunization against PiCV alone will contribute to effective control of YPDS.
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Affiliation(s)
- Tomasz Stenzel
- a Department of Poultry Diseases, Faculty of Veterinary Medicine , University of Warmia and Mazury , Olsztyn , Poland
| | - Andrzej Koncicki
- a Department of Poultry Diseases, Faculty of Veterinary Medicine , University of Warmia and Mazury , Olsztyn , Poland
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Wang KC, Zhuang QY, Qiu Y, Wang T, Chen JM. Genome sequence characterization of pigeon circoviruses in China. Virus Res 2017; 233:1-7. [PMID: 28268176 DOI: 10.1016/j.virusres.2017.03.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 03/01/2017] [Accepted: 03/03/2017] [Indexed: 12/24/2022]
Abstract
Pigeon circovirus (PiCV) was detected by PCR in pigeons from China. Altogether, 48 out of 244 pigeons tested positive for PiCV (positive rate, 19.67%), suggesting that the virus was prevalent in China. From the 48 PiCV-positive samples, about 2040bp complete genome fragments were obtained by full length genome amplification and sequenced with a next-generation sequencing platform. Characteristics of the ORFs from different PiCV strains tested in this study were analyzed. Several insertion, deletion or substitutions were discovered during the analysis of the nucleotide sequence compared with sequences reported previously. In phylogenetic tree analysis, 48 sequences isolated in this study could be further divided into five clades (A, B, C, D, and F), clade E includes reference sequences only. Two major groups were found in the six clades, distinguished by ATA and ATG initiation codons. Most of the viruses isolated in the study were in the ATG group, with fewer in the ATA branch.
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Affiliation(s)
- Kai-Cheng Wang
- China Animal Health and Epidemiology Center, Qingdao, Shandong Province, China.
| | - Qing-Ye Zhuang
- China Animal Health and Epidemiology Center, Qingdao, Shandong Province, China
| | - Yuan Qiu
- China Animal Health and Epidemiology Center, Qingdao, Shandong Province, China
| | - Tong Wang
- China Animal Health and Epidemiology Center, Qingdao, Shandong Province, China
| | - Ji-Ming Chen
- China Animal Health and Epidemiology Center, Qingdao, Shandong Province, China
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12
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Stenzel T, Woźniakowski G, Pestka D, Choszcz D, Tykałowski B, Śmiałek M, Koncicki A. Application of pigeon circovirus recombinant capsid protein for detecting anti-PiCV antibodies in the sera of asymptomatic domestic pigeons and the potential use of a combination of serological and molecular tests for controlling circovirus infections in pigeon breeding flocks. Poult Sci 2016; 96:303-308. [PMID: 27578880 DOI: 10.3382/ps/pew266] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 03/04/2016] [Accepted: 06/15/2016] [Indexed: 11/20/2022] Open
Abstract
The aim of this study was to evaluate the serologic status of domestic pigeons not infected and asymptomatically infected with the pigeon circovirus (PiCV) with the use of an enzyme-linked assay based on PiCV recombinant capsid protein as a plate antigen. Recombinant PiCV capsid protein was produced by transforming E. coli BL21 (DE3) Rosetta colonies with expression plasmids.Blood samples and cloacal swabs were collected from 171 asymptomatic pigeons. The birds were divided into two groups (infected and not infected with PiCV) based on the results of Sybr Green real time PCR screening for the presence of PiCV genetic material. Approximately 70% of the pigeons tested positive for anti-PiCV antibodies regardless of their infection status. Antibody levels, the coefficient of variation and standard deviation were significantly higher in the group of infected pigeons.The results indicate that ELISA is a highly useful test that complements molecular methods in evaluations of PiCV infection status in domestic pigeons. The spread of pigeon circovirus infections can be controlled by keeping breeding flocks free of PiCV, which can only be achieved by subjecting birds to real time PCR and serological tests.
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Affiliation(s)
- Tomasz Stenzel
- Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury, ul. Oczapowskiego 13, 10-719 Olsztyn, Poland
| | | | - Daria Pestka
- Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury, ul. Oczapowskiego 13, 10-719 Olsztyn, Poland
| | - Dariusz Choszcz
- Department of Heavy Duty Machines and Research Methodology, Faculty of Technical Sciences, University of Warmia and Mazury, Olsztyn, Poland
| | - Bartłomiej Tykałowski
- Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury, ul. Oczapowskiego 13, 10-719 Olsztyn, Poland
| | - Marcin Śmiałek
- Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury, ul. Oczapowskiego 13, 10-719 Olsztyn, Poland
| | - Andrzej Koncicki
- Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury, ul. Oczapowskiego 13, 10-719 Olsztyn, Poland
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13
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Zhang Z, Dai W, Wang S, Dai D. Epidemiology and genetic characteristics of pigeon circovirus (PiCV) in eastern China. Arch Virol 2014; 160:199-206. [DOI: 10.1007/s00705-014-2255-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 10/05/2014] [Indexed: 10/24/2022]
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14
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Stenzel T, Pestka D. Occurrence and genetic diversity of pigeon circovirus strains in Poland. Acta Vet Hung 2014; 62:274-83. [PMID: 24659711 DOI: 10.1556/avet.2014.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Pigeon circovirus (PiCV) is an immunosuppressive agent widespread throughout the world, which causes a disease in pigeons called Young Pigeon Disease Syndrome. The aim of the study was to evaluate the prevalence of PiCV in Poland and investigate the genetic diversity relative to other known PiCV isolates. Samples from 152 pigeon flocks (88 flocks of racing pigeons and 64 flocks of fancy pigeons) from various regions of Poland were tested by polymerase chain reaction and an approximately 326-base fragment of the capsid protein gene (Cap gene) of the virus was amplified. The average viral prevalence was found to be 70.3% (76.13% in racing pigeons and 62.5% in fancy pigeons). Among the obtained positive samples, 21 were selected for sequencing and a phylogenetic analysis was performed. It was found that the majority of Polish PiCV isolates, to varying degrees, are related to isolates occurring in Europe. It was also observed that the Cap gene is variable and mutations often occur in it, which impacts the amino acid sequences in the capsid protein (nucleotide similarity averaged 86.57%, amino acid similarity averaged 89.02%).
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Affiliation(s)
- Tomasz Stenzel
- 1 University of Warmia and Mazury Department of Poultry Diseases, Faculty of Veterinary Medicine Oczapowskiego 13 10-719 Olsztyn Poland
| | - Daria Pestka
- 1 University of Warmia and Mazury Department of Poultry Diseases, Faculty of Veterinary Medicine Oczapowskiego 13 10-719 Olsztyn Poland
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15
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Stenzel T, Piasecki T, Chrząstek K, Julian L, Muhire BM, Golden M, Martin DP, Varsani A. Pigeon circoviruses display patterns of recombination, genomic secondary structure and selection similar to those of beak and feather disease viruses. J Gen Virol 2014; 95:1338-1351. [PMID: 24639400 DOI: 10.1099/vir.0.063917-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Pigeon circovirus (PiCV) has a ~2 kb genome circular ssDNA genome. All but one of the known PiCV isolates have been found infecting pigeons in various parts of the world. In this study, we screened 324 swab and tissue samples from Polish pigeons and recovered 30 complete genomes, 16 of which came from birds displaying no obvious pathology. Together with 17 other publicly available PiCV complete genomes sampled throughout the Northern Hemisphere and Australia, we find that PiCV displays a similar degree of genetic diversity to that of the related psittacine-infecting circovirus species, beak and feather disease virus (BFDV). We show that, as is the case with its pathology and epidemiology, PiCV also displays patterns of recombination, genomic secondary structure and natural selection that are generally very similar to those of BFDV. It is likely that breeding facilities play a significant role in the emergence of new recombinant PiCV variants and given that ~50 % of the domestic pigeon population is infected subclinically, all pigeon breeding stocks should be screened routinely for this virus.
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Affiliation(s)
- Tomasz Stenzel
- Department of Avian Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury, ul. Oczapowskiego 13, 10-719 Olsztyn, Poland
| | - Tomasz Piasecki
- Department of Epizootiology with Clinic of Birds and Exotic Animals, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, 50-360 Wrocław, Poland
| | - Klaudia Chrząstek
- Department of Epizootiology with Clinic of Birds and Exotic Animals, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, 50-360 Wrocław, Poland
| | - Laurel Julian
- School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand
| | - Brejnev M Muhire
- Institute of Infectious Diseases and Molecular Medicine, Computational Biology Group, University of Cape Town, South Africa
| | - Michael Golden
- Institute of Infectious Diseases and Molecular Medicine, Computational Biology Group, University of Cape Town, South Africa
| | - Darren P Martin
- Institute of Infectious Diseases and Molecular Medicine, Computational Biology Group, University of Cape Town, South Africa
| | - Arvind Varsani
- Department of Plant Pathology and Emerging Pathogens Institute, University of Florida, Gainesville, FL 32611, USA.,Electron Microscope Unit, Division of Medical Biochemistry, Department of Clinical Laboratory Sciences, University of Cape Town, Observatory 7700, South Africa.,School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand.,Biomolecular Interaction Centre, University of Canterbury, Christchurch 8140, New Zealand
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16
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Stenzel TA, Pestka D, Tykałowski B, Śmiałek M, Koncicki A. Epidemiological investigation of selected pigeon viral infections in Poland. Vet Rec 2012; 171:562. [PMID: 23118041 DOI: 10.1136/vr.100932] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Due to a lack of data in regard to the spread of viral infections in Polish pigeon populations, studies were undertaken to assess the frequency of adeno-, circo- and herpesvirus infections in flocks of pigeons across the entire country. In total, 107 flocks were examined, of which 61 per cent consisted of racing and 39 per cent of fancy pigeons. The flocks were divided into groups according to breed (racing and fancy pigeons) as well as physical condition (healthy and sick). In the studied pigeon flocks, the pigeon circovirus (PiCV) genetic material was the most frequently detected (44.5-100 per cent depending on the group), pigeon herpesvirus genetic material was second in frequency (0-30 per cent depending on the group), while genetic material of pigeon adenovirus was found only in two flocks of young birds with clinical symptoms of Young Pigeon Disease Syndrome (YPDS). The presence of fowl adenovirus (FAdV) genetic material was not detected in any of the studied flocks. Results obtained demonstrate a wide spread of circovirus in pigeon flocks in Poland, and substantiate earlier theories proposed by other authors, that immunosuppression evoked by PiCV infection is one of the main causative agents of YPDS.
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Affiliation(s)
- T A Stenzel
- Department of Poultry Diseases, University of Warmia and Mazury, Oczapowskiego 13, Olsztyn 10-719, Poland.
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Patterson EI, Forwood JK, Raidal SR. Homology Modelling and Structural Comparisons of Capsid-Associated Proteins from Circoviruses Reveal Important Virus-Specific Surface Antigens. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/csta.2012.12002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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