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Zhao Z, Li C, Huang J, Yuan X, Cui Y, Liu Y, Zhou Y, Zhu Z, Zhang Z. Phlorizin Limits Bovine Viral Diarrhea Virus Infection in Mice via Regulating Gut Microbiota Composition. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:9906-9914. [PMID: 38625103 DOI: 10.1021/acs.jafc.4c01228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Phlorizin (PHZ) is one of the main pharmacologically active ingredients in Lithocarpus polystachyus. We have previously shown that PHZ inhibits the replication of bovine viral diarrhea virus (BVDV), but the exact antiviral mechanism, especially in vivo, is still unknown. Here, we further confirm that PHZ has good protective effects in BVDV-infected mice. We analyzed BVDV-induced CD3+, CD4+, and CD8+ T cells among peripheral blood lymphocytes and found that PHZ significantly restored their percentage. Metagenomic analyses revealed that PHZ markedly improved the richness and diversity of intestinal microbiota and increased the abundance of potentially health-related microbes (families Lachnosipiraceae, Ruminococcaceae, and Oscillospiraceae). Specifically, the relative abundance of short chain fatty acid (SCFA)-producing bacteria, including Lachnospiraceae_UCG-006, unclassified_f_Ruminococcaceae, Oscillibacter, Intestinimonas, Blautia, and Lachnoclostridium increased significantly after PHZ treatment. Interestingly, BVDV-infected mice that received fecal microbiota from PHZ-treated mice (PHZ-FMT) had a significantly lower viral load in the duodenum and jejunum than untreated mice. Pathological lesions of duodenum and jejunum were also greatly reduced in the PHZ-FMT group, confirming a significant antiviral effect. These findings show that gut microbiota play an important role in PHZ's antiviral activity and suggest that their targeted intervention might be a promising endogenous strategy to prevent and control BVDV.
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Affiliation(s)
- Zhicheng Zhao
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China
- Engineering Research Center for Prevention and Control of Cattle Diseases, Daqing 163319, Heilongjiang Province, China
| | - Chuang Li
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China
- Engineering Research Center for Prevention and Control of Cattle Diseases, Daqing 163319, Heilongjiang Province, China
| | - Jiang Huang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
- Agriculture and Rural Bureau of Sinan County, Sinan 565100, Guizhou Province, China
| | - Xueying Yuan
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China
- Engineering Research Center for Prevention and Control of Cattle Diseases, Daqing 163319, Heilongjiang Province, China
| | - Yueqi Cui
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China
- Engineering Research Center for Prevention and Control of Cattle Diseases, Daqing 163319, Heilongjiang Province, China
| | - Yu Liu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China
- Engineering Research Center for Prevention and Control of Cattle Diseases, Daqing 163319, Heilongjiang Province, China
| | - Yulong Zhou
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China
- Engineering Research Center for Prevention and Control of Cattle Diseases, Daqing 163319, Heilongjiang Province, China
| | - Zhanbo Zhu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China
- Engineering Research Center for Prevention and Control of Cattle Diseases, Daqing 163319, Heilongjiang Province, China
| | - Zecai Zhang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
- Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China
- Engineering Research Center for Prevention and Control of Cattle Diseases, Daqing 163319, Heilongjiang Province, China
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Calado AM, Seixas F, Dos Anjos Pires M. Virus as Teratogenic Agents. Methods Mol Biol 2024; 2753:105-142. [PMID: 38285335 DOI: 10.1007/978-1-0716-3625-1_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
Viral infectious diseases are important causes of reproductive disorders, as abortion, fetal mummification, embryonic mortality, stillbirth, and congenital abnormalities in animals and in humans. In this chapter, we provide an overview of some virus, as important agents in teratology.We begin by describing the Zika virus, whose infection in humans had a very significant impact in recent years and has been associated with major health problems worldwide. This virus is a teratogenic agent in humans and has been classified as a public health emergency of international concern (PHEIC).Then, some viruses associated with reproductive abnormalities on animals, which have a significant economic impact on livestock, are described, as bovine herpesvirus, bovine viral diarrhea virus, Schmallenberg virus, Akabane virus, and Aino virus.For all viruses mentioned in this chapter, the teratogenic effects and the congenital malformations associated with fetus and newborn are described, according to the most recent scientific publications.
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Affiliation(s)
- Ana Margarida Calado
- Animal and Veterinary Research Centre (CECAV), UTAD, and Associate Laboratory for Animal and Veterinary Science (AL4Animals), Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal
| | - Fernanda Seixas
- Animal and Veterinary Research Centre (CECAV), UTAD, and Associate Laboratory for Animal and Veterinary Science (AL4Animals), Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal
| | - Maria Dos Anjos Pires
- Animal and Veterinary Research Centre (CECAV), UTAD, and Associate Laboratory for Animal and Veterinary Science (AL4Animals), Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal.
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3
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Cui Y, Yuan X, Zhao Z, Li C, Liu Y, Zhou Y, Zhu Z, Zhang Z. The activation of liver X receptors in Madin-Darby bovine kidney cells and mice restricts infection by bovine viral diarrhea virus. Vet Microbiol 2024; 288:109948. [PMID: 38113573 DOI: 10.1016/j.vetmic.2023.109948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 11/25/2023] [Accepted: 12/10/2023] [Indexed: 12/21/2023]
Abstract
Bovine viral diarrhea virus (BVDV) is prevalent worldwide and is an important pathogen that represents a serious threat to the development of the cattle industry by causing significant economic losses. Liver X receptors (LXRs) are members of the nuclear receptor superfamily and have become attractive therapeutic targets for cardiovascular disease. In the present study, we found that LXRs in both Madin-Darby bovine kidney (MDBK) cells and mice were associated with BVDV infection. GW3965, an agonist for LXRs, significantly inhibited BVDV RNA and protein levels in MDBK cells. In vivo studies in a mouse model also confirmed the inhibitory role of GW3965 in BVDV replication and the ameliorating effect of GW3965 on pathological injury to the duodenum. In vitro investigations of the potential mechanisms involved showed that GW3965 significantly inhibited BVDV-induced increases in cholesterol levels and viral internalization. Furthermore, the antiviral activity of GW3965 was significantly reduced following cholesterol replenishment, thus demonstrating that cholesterol was involved in the resistance of GW3965 to BVDV replication. Further studies indicated the role of ATP-binding cassette transporter A1 (ABCA1) and cholesterol-25-hydroxylase (CH25H) in the antiviral activity of GW3965. We also demonstrated the significant antiviral effect of 25hydroxycholesterol (25HC), a product of the catalysis of cholesterol by CH25H. In addition, the anti-BVDV effects of demethoxycurcumin (DMC), cyanidin-3-O-glucoside (C3G), and saikosaponin-A (SSA), three natural agonizts of LXRs, were also confirmed in both MDBK cells and mice. However, the antiviral activities of these agents were weakened by SR9243, a synthetic inhibitor of LXRs. For the first time, our research demonstrated that the activation of LXRs can exert significant anti-BVDV effects in MDBK cells and mice.
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Affiliation(s)
- Yueqi Cui
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, China
| | - Xueying Yuan
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, China
| | - Zhicheng Zhao
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, China
| | - Chuang Li
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, China
| | - Yu Liu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing, China; Heilongjiang Province Cultivating Collaborative Innovation Center for The Beidahuang Modern Agricultural Industry Technology, Daqing, China
| | - Yulong Zhou
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing, China; Heilongjiang Province Cultivating Collaborative Innovation Center for The Beidahuang Modern Agricultural Industry Technology, Daqing, China
| | - Zhanbo Zhu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing, China; Heilongjiang Province Cultivating Collaborative Innovation Center for The Beidahuang Modern Agricultural Industry Technology, Daqing, China.
| | - Zecai Zhang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing, China; Heilongjiang Province Cultivating Collaborative Innovation Center for The Beidahuang Modern Agricultural Industry Technology, Daqing, China.
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Vicosa Bauermann F, Falkenberg S, Rudd JM, Peter CM, Merchioratto I, Ritchey JW, Gilliam J, Taylor J, Ma H, Maggioli MF. Immune Responses to Influenza D Virus in Calves Previously Infected with Bovine Viral Diarrhea Virus 2. Viruses 2023; 15:2442. [PMID: 38140683 PMCID: PMC10747992 DOI: 10.3390/v15122442] [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: 09/18/2023] [Revised: 11/20/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023] Open
Abstract
Bovine viral diarrhea virus (BVDV) induces immunosuppression and thymus depletion in calves. This study explores the impact of prior BVDV-2 exposure on the subsequent immune response to influenza D virus (IDV). Twenty 3-week-old calves were divided into four groups. Calves in G1 and G3 were mock-treated on day 0, while calves in G2 and G4 received BVDV. Calves in G1 (mock) and G2 (BVDV) were necropsied on day 13 post-infection. IDV was inoculated on day 21 in G3 calves (mock + IDV) and G4 (BVDV + IDV) and necropsy was conducted on day 42. Pre-exposed BVDV calves exhibited prolonged and increased IDV shedding in nasal secretions. An approximate 50% reduction in the thymus was observed in acutely infected BVDV calves (G2) compared to controls (G1). On day 42, thymus depletion was observed in two calves in G4, while three had normal weight. BVDV-2-exposed calves had impaired CD8 T cell proliferation after IDV recall stimulation, and the α/β T cell impairment was particularly evident in those with persistent thymic atrophy. Conversely, no difference in antibody levels against IDV was noted. BVDV-induced thymus depletion varied from transient to persistent. Persistent thymus atrophy was correlated with weaker T cell proliferation, suggesting correlation between persistent thymus atrophy and impaired T cell immune response to subsequent infections.
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Affiliation(s)
- Fernando Vicosa Bauermann
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University (OSU), Stillwater, OK 74078, USA
| | - Shollie Falkenberg
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA
- Animal Research Services, National Animal Disease Center, United States Department of Agriculture, Ames, IA 50010, USA
| | - Jennifer M. Rudd
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University (OSU), Stillwater, OK 74078, USA
| | - Cristina Mendes Peter
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University (OSU), Stillwater, OK 74078, USA
- Center for Medical Bioinformatics, Escola Paulista de Medicina, Federal University of Sao Paulo (UNIFESP), Sao Paulo 04039-032, Brazil
| | - Ingryd Merchioratto
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University (OSU), Stillwater, OK 74078, USA
- Setor de Virologia, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Santa Maria 97105-900, Brazil
| | - Jerry W. Ritchey
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University (OSU), Stillwater, OK 74078, USA
| | - John Gilliam
- Veterinary Clinical Sciences, College of Veterinary Medicine, Oklahoma State University, Stillwater, OK 74078, USA
| | - Jared Taylor
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University (OSU), Stillwater, OK 74078, USA
| | - Hao Ma
- Animal Research Services, National Animal Disease Center, United States Department of Agriculture, Ames, IA 50010, USA
| | - Mayara Fernanda Maggioli
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University (OSU), Stillwater, OK 74078, USA
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Workman AM, Heaton MP, Vander Ley BL, Webster DA, Sherry L, Bostrom JR, Larson S, Kalbfleisch TS, Harhay GP, Jobman EE, Carlson DF, Sonstegard TS. First gene-edited calf with reduced susceptibility to a major viral pathogen. PNAS NEXUS 2023; 2:pgad125. [PMID: 37181049 PMCID: PMC10167990 DOI: 10.1093/pnasnexus/pgad125] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 01/03/2023] [Accepted: 04/06/2023] [Indexed: 05/16/2023]
Abstract
Bovine viral diarrhea virus (BVDV) is one of the most important viruses affecting the health and well-being of bovine species throughout the world. Here, we used CRISPR-mediated homology-directed repair and somatic cell nuclear transfer to produce a live calf with a six amino acid substitution in the BVDV binding domain of bovine CD46. The result was a gene-edited calf with dramatically reduced susceptibility to infection as measured by reduced clinical signs and the lack of viral infection in white blood cells. The edited calf has no off-target edits and appears normal and healthy at 20 months of age without obvious adverse effects from the on-target edit. This precision bred, proof-of-concept animal provides the first evidence that intentional genome alterations in the CD46 gene may reduce the burden of BVDV-associated diseases in cattle and is consistent with our stepwise, in vitro and ex vivo experiments with cell lines and matched fetal clones.
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Affiliation(s)
- Aspen M Workman
- US Meat Animal Research Center, United States Department of Agriculture (USDA), Agricultural Research Service (ARS), 844 Road 313 Clay Center, NE 68933, USA
| | - Michael P Heaton
- US Meat Animal Research Center, United States Department of Agriculture (USDA), Agricultural Research Service (ARS), 844 Road 313 Clay Center, NE 68933, USA
| | - Brian L Vander Ley
- Great Plains Veterinary Educational Center, University of Nebraska–Lincoln, 820 Road 313 Clay Center, NE 68933, USA
| | - Dennis A Webster
- Recombinetics Inc., 3388 Mike Collins Drive, Eagan, MN 55121, USA
| | - Luke Sherry
- Recombinetics Inc., 3388 Mike Collins Drive, Eagan, MN 55121, USA
| | | | - Sabreena Larson
- Acceligen Inc., 3388 Mike Collins Drive, Eagan, MN 55121, USA
| | - Theodore S Kalbfleisch
- Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, 1400 Nicholasville Rd Lexington, KY 40546, USA
| | - Gregory P Harhay
- US Meat Animal Research Center, United States Department of Agriculture (USDA), Agricultural Research Service (ARS), 844 Road 313 Clay Center, NE 68933, USA
| | - Erin E Jobman
- Great Plains Veterinary Educational Center, University of Nebraska–Lincoln, 820 Road 313 Clay Center, NE 68933, USA
| | - Daniel F Carlson
- Recombinetics Inc., 3388 Mike Collins Drive, Eagan, MN 55121, USA
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Newcomer BW. 75 years of bovine viral diarrhea virus: Current status and future applications of the use of directed antivirals. Antiviral Res 2021; 196:105205. [PMID: 34742739 DOI: 10.1016/j.antiviral.2021.105205] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 10/30/2021] [Accepted: 11/02/2021] [Indexed: 01/03/2023]
Abstract
Bovine viral diarrhea virus (BVDV) was first reported 75 years ago and remains a source of major financial and production losses in the North American cattle industry. Currently, control methods in North America primarily center around biosecurity and vaccination programs; however, despite high levels of vaccination, the virus persists in the cattle herd due at least in part to the often-insidious nature of disease and the constant viremia and viral shedding of persistently infected animals which act as a reservoir for the virus. Continued development of targeted antivirals represents an additional tool for the prevention of BVDV-associated losses. Currently, in vivo studies of BVDV antivirals are relatively limited and have primarily been directed at the RNA-dependent RNA polymerase which represents the viral target with the highest potential for commercial development. Additional live animal studies have explored the potential of exogenous interferon treatment. Future research of commercial antivirals must focus on the establishment and validation of in vivo efficacy for compounds with demonstrated antiviral potential. The areas which provide the most viable economic justification for the research and development of antivirals drugs are the fed cattle sector, outbreak control, and wildlife or animals of high genetic value. With further development, targeted antivirals represent an additional tool for the management and control of BVDV in North American cattle herds.
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Affiliation(s)
- Benjamin W Newcomer
- Veterinary Education, Research, & Outreach Program, Texas A&M and West Texas A&M Universities, Canyon, TX, 79016, USA.
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7
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King J, Pohlmann A, Dziadek K, Beer M, Wernike K. Cattle connection: molecular epidemiology of BVDV outbreaks via rapid nanopore whole-genome sequencing of clinical samples. BMC Vet Res 2021; 17:242. [PMID: 34247601 PMCID: PMC8272987 DOI: 10.1186/s12917-021-02945-3] [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: 02/05/2021] [Accepted: 06/18/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND As a global ruminant pathogen, bovine viral diarrhea virus (BVDV) is responsible for the disease Bovine Viral Diarrhea with a variety of clinical presentations and severe economic losses worldwide. Classified within the Pestivirus genus, the species Pestivirus A and B (syn. BVDV-1, BVDV-2) are genetically differentiated into 21 BVDV-1 and four BVDV-2 subtypes. Commonly, the 5' untranslated region and the Npro protein are utilized for subtyping. However, the genetic variability of BVDV leads to limitations in former studies analyzing genome fragments in comparison to a full-genome evaluation. RESULTS To enable rapid and accessible whole-genome sequencing of both BVDV-1 and BVDV-2 strains, nanopore sequencing of twelve representative BVDV samples was performed on amplicons derived through a tiling PCR procedure. Covering a multitude of subtypes (1b, 1d, 1f, 2a, 2c), sample matrices (plasma, EDTA blood and ear notch), viral loads (Cq-values 19-32) and species (cattle and sheep), ten of the twelve samples produced whole genomes, with two low titre samples presenting 96 % genome coverage. CONCLUSIONS Further phylogenetic analysis of the novel sequences emphasizes the necessity of whole-genome sequencing to identify novel strains and supplement lacking sequence information in public repositories. The proposed amplicon-based sequencing protocol allows rapid, inexpensive and accessible obtainment of complete BVDV genomes.
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Affiliation(s)
- Jacqueline King
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Südufer 10, 17493, Greifswald - Insel Riems, Germany
| | - Anne Pohlmann
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Südufer 10, 17493, Greifswald - Insel Riems, Germany
| | - Kamila Dziadek
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Südufer 10, 17493, Greifswald - Insel Riems, Germany
| | - Martin Beer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Südufer 10, 17493, Greifswald - Insel Riems, Germany
| | - Kerstin Wernike
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Südufer 10, 17493, Greifswald - Insel Riems, Germany.
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Persistent infection of American bison (Bison bison) with bovine viral diarrhea virus and bosavirus. Vet Microbiol 2020; 252:108949. [PMID: 33338948 DOI: 10.1016/j.vetmic.2020.108949] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 11/29/2020] [Indexed: 01/01/2023]
Abstract
Bovine viral diarrhea viruses (BVDV) are significant pathogens of cattle, leading to losses associated with reproductive failure, respiratory disease and immune dysregulation. While cattle are the reservoir for BVDV, a wide range of domestic and wild ruminants are susceptible to infection and disease caused by BVDV. Samples from four American bison (Bison bison) from a captive herd were submitted for diagnostic testing due to their general unthriftiness. Metagenomic sequencing on pooled nasal swabs and serum identified co-infection with a BVDV and a bovine bosavirus. The BVDV genome was more similar to the vaccine strain Oregon C24 V than to other BVDV sequences in GenBank, with 92.7 % nucleotide identity in the open reading frame. The conserved 5'-untranslated region was 96.3 % identical to Oregon C24 V. Bosavirus has been previously identified in pooled fetal bovine serum but its clinical significance is unknown. Sequencing results were confirmed by virus isolation and PCR detection of both viruses in serum and nasal swab samples from two of the four bison. One animal was co-infected with both BVDV and bosavirus while separate individuals were positive solely for BVDV or bosavirus. Serum and nasal swabs from these same animals collected 51 days later remained positive for BVDV and bosavirus. These results suggest that both viruses can persistently infect bison. While the etiological significance of bosavirus infection is unknown, the ability of BVDV to persistently infect bison has implications for BVDV control and eradication programs. Possible synergy between BVDV and bosavirus persistent infection warrants further study.
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Pardon B, Buczinski S. Bovine Respiratory Disease Diagnosis: What Progress Has Been Made in Infectious Diagnosis? Vet Clin North Am Food Anim Pract 2020; 36:425-444. [PMID: 32451034 PMCID: PMC7244442 DOI: 10.1016/j.cvfa.2020.03.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Bart Pardon
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke 9820, Belgium.
| | - Sébastien Buczinski
- Département des Sciences Cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, 3200 rue Sicotte, St-Hyacinthe, Québec J2S 2M2, Canada
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Ji J, Wang C, He Z, Hay KE, Barnes TS, O’Connor AM. Comparing the estimates of effect obtained from statistical causal inference methods: An example using bovine respiratory disease in feedlot cattle. PLoS One 2020; 15:e0233960. [PMID: 32584812 PMCID: PMC7316239 DOI: 10.1371/journal.pone.0233960] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 05/15/2020] [Indexed: 01/02/2023] Open
Abstract
The causal effect of an exposure on an outcome of interest in an observational study cannot be estimated directly if the confounding variables are not controlled. Many approaches are available for estimating the causal effect of an exposure. In this manuscript, we demonstrate the advantages associated with using inverse probability weighting (IPW) and doubly robust estimation of the odds ratio in terms of reduced bias. IPW approach can be used to adjust for confounding variables and provide unbiased estimates of the exposure’s causal effect. For cluster-structured data, as is common in animal populations, inverse conditional probability weighting (ICPW) approach can provide a robust estimation of the causal effect. Doubly robust estimation can provide a robust method even when the specification of the model form is uncertain. In this paper, the usage of IPW, ICPW, and doubly robust approaches are illustrated with a subset of data with complete covariates from the Australian-based National Bovine Respiratory Disease Initiative as well as simulated data. We evaluate the causal effect of prior bovine viral diarrhea exposure on bovine respiratory disease in feedlot cattle. The results show that the IPW, ICPW and doubly robust approaches would provide a more accurate estimation of the exposure effect than the traditional outcome regression model, and doubly robust approaches are the most preferable overall.
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Affiliation(s)
- Ju Ji
- Department of Statistics, Iowa State University, Ames, Iowa, United States of America
- * E-mail:
| | - Chong Wang
- Department of Statistics, Iowa State University, Ames, Iowa, United States of America
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, Iowa, United States of America
| | - Zhulin He
- Department of Statistics, Iowa State University, Ames, Iowa, United States of America
| | - Karen E. Hay
- QIMR Berghofer Medical Research Institute, Herston, Australia
- The University of Queensland, Queensland Alliance for Agriculture and Food Innovation, Gatton, Queensland, Australia
| | - Tamsin S. Barnes
- The University of Queensland, School of Veterinary Science, Gatton, Queensland, Australia
- The University of Queensland, Queensland Alliance for Agriculture and Food Innovation, Gatton, Queensland, Australia
| | - Annette M. O’Connor
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, Iowa, United States of America
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, Michigan, United States of America
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Hou P, Xu Y, Wang H, He H. Detection of bovine viral diarrhea virus genotype 1 in aerosol by a real time RT-PCR assay. BMC Vet Res 2020; 16:114. [PMID: 32295612 PMCID: PMC7159024 DOI: 10.1186/s12917-020-02330-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 03/30/2020] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND As a pestivirus of the Flaviviridae family, bovine viral diarrhea virus (BVDV), has imposed a large burden on animal husbandry worldwide, and such virus can be transmitted mainly through direct contact with other infected animals and probably via aerosols. In the present study, we aimed to develop a real-time RT-PCR method for detection of BVDV-1 in aerosol samples. METHODS A pair of primers specific for highly conserved regions of the BVDV-1 5'-UTR was designed. The standard curve and sensitivity of the developed assay were assessed based on 10-fold serial dilutions of RNA molecular standard. The specificity of the assay was evaluated with other pestiviruses and infectious bovine viruses. The clinical performance was examined by testing 169 aerosol samples. RESULTS The results showed that a good linear relationship existed between the standard curve and the concentration of template. The lowest detection limit was 5.2 RNA molecules per reaction. This assay was specific for detection of BVDV-1, and no amplification was found for other pestiviruses such as classical swine fever virus (CSFV), border disease virus (BDV), and common infectious bovine viruses, including BVDV-2, infectious bovine rhinotracheitis virus (IBRV), bovine parainfluenza virus type 3 (BPIV-3), bovine respiratory syncytial virus (BRSV), bovine ephemeral fever virus (BEFV) and bovine coronavirus (BcoV). The assay was highly reproducible with low variation coefficient values (CVs) for intra-assay and inter-assay. A total of 169 aerosol samples collected from six dairy herds were tested using this method. The results showed that the positive detection rate of BVDV-1 was 17.2% (29/169), which was significantly higher compared with the conventional RT-PCR. Additionally, the positive samples (n = 29) detected by real-time RT-PCR were verified by BVDV RPA-LFD, and a concordance rate of 100% was obtained between them. CONCLUSIONS Taken together, we developed a real-time RT-PCR assay for quantitative analysis of BVDV-1 in aerosol samples, and our finding provided valuable insights into the risk on aerosol transmission of BVDV-1.
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Affiliation(s)
- Peili Hou
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, No.88 East Wenhua Road, Jinan City, Shandong Province China
| | - Yaru Xu
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, No.88 East Wenhua Road, Jinan City, Shandong Province China
| | - Hongmei Wang
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, No.88 East Wenhua Road, Jinan City, Shandong Province China
| | - Hongbin He
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, No.88 East Wenhua Road, Jinan City, Shandong Province China
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Shi H, Leng C, Xu Q, Jiao Z, Shi H, Sun S, Qiu R, Kan Y, Yao L. Experimental infection of BALB/c mice with a caprine Pestivirus H isolate. Vet Microbiol 2018; 221:1-7. [PMID: 29981694 DOI: 10.1016/j.vetmic.2018.05.016] [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: 04/24/2018] [Revised: 05/23/2018] [Accepted: 05/23/2018] [Indexed: 10/16/2022]
Abstract
To data, small animal Pestivirus H infection models have not been established. In order to develop a new infection model, BALB/c mice were inoculated with Pestivirus H strain HN1507. The virus-inoculated mice displayed nasal discharge and fever clinical signs. Histopathological changes in Pestivirus H-infected mice included alveolar septa thickening and alveolar atrophy in the lungs from 1 to 11 days post-inoculation (PI). Furthermore, we observed tracheal epithelial cell abscission and inflammatory cell infiltration in the tracheas from 1 to 9 days PI, infiltration of eosinophils in the spleens from 1 to 9 days PI, intestinal villi abscission and lysis of epithelial cells in the intestines from 1 to 11 days PI. The results of virus isolation showed that Pestivirus H replicated well in the lungs, tracheas, spleens, and intestines of infected BALB/c mice, and peak viral titers were observed 3 days PI. RT-PCR and immunofluorescence results were in agreement with the virus isolation results; however, the hearts of infected mice from 1 to 3 days PI were positive while virus isolation results were negative. To the best of our knowledge, this is the first study reporting Pestivirus H detection in BALB/c mice. Our findings indicated that Pestivirus H strain HN1507 was pathogenic to BALB/c mice and caused clinical signs and histopathological lesions in Pestivirus H-infected BALB/c mice.
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Affiliation(s)
- Hongfei Shi
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, China-UK-NYNU-RRes Joint Libratory of Insect Biology, Nanyang Normal University, Nanyang, PR China
| | - Chaoliang Leng
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, China-UK-NYNU-RRes Joint Libratory of Insect Biology, Nanyang Normal University, Nanyang, PR China
| | - Qian Xu
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, China-UK-NYNU-RRes Joint Libratory of Insect Biology, Nanyang Normal University, Nanyang, PR China
| | - Zhujin Jiao
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, China-UK-NYNU-RRes Joint Libratory of Insect Biology, Nanyang Normal University, Nanyang, PR China
| | - Hongling Shi
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, China-UK-NYNU-RRes Joint Libratory of Insect Biology, Nanyang Normal University, Nanyang, PR China
| | - Shiyu Sun
- Liaoning Center for Animal Disease Control and Prevention, Shenyang, PR China
| | - Reng Qiu
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, China-UK-NYNU-RRes Joint Libratory of Insect Biology, Nanyang Normal University, Nanyang, PR China
| | - Yunchao Kan
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, China-UK-NYNU-RRes Joint Libratory of Insect Biology, Nanyang Normal University, Nanyang, PR China.
| | - Lunguang Yao
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, China-UK-NYNU-RRes Joint Libratory of Insect Biology, Nanyang Normal University, Nanyang, PR China.
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Fernández M, Braun U, Frei S, Schweizer M, Hilbe M. Border Disease Virus Infection of Bovine Placentas. Vet Pathol 2018; 55:425-433. [PMID: 29402208 DOI: 10.1177/0300985817754123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Subsequent to a previous study of border disease virus (BDV) horizontal transmission from a persistently BDV-infected calf to 6 seronegative pregnant heifers, the heifers were slaughtered 60 days after exposure to the infected calf, and their fetuses and placentas were examined. Immunohistochemical examination of fetal organs and placenta showed positive labeling of moderate intensity for pestivirus antigen in 3 of 6 heifers. BDV infection in these 3 animals was confirmed by the detection of BDV RNA in different organs using reverse transcription quantitative polymerase chain reaction. In the placenta, the positive cells were visualized mostly on the fetal side. In those 3 heifers that harbored an infected fetus, the placental tissue in the placentome region showed a moderate to severe mononuclear and fibrosing placentitis and, in severe cases, necrotic areas. The inflammatory population was composed predominantly of T and B cells, a substantial number of macrophages, and, to a lesser extent, plasma cells. This is a novel report of placentitis in persistently BDV-infected fetuses from pregnant heifers that became acutely infected by cohousing with a calf persistently infected with BDV, which extends previous reports on bovine viral diarrhea virus-infected and BDV-infected cattle and sheep, respectively.
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Affiliation(s)
- Miguel Fernández
- 1 Vetsuisse Faculty, Institute of Veterinary Pathology, University of Zurich, Zurich, Switzerland
| | - Ueli Braun
- 2 Vetsuisse Faculty, Department of Farm Animals, University of Zurich, Zurich, Switzerland
| | - Sandra Frei
- 2 Vetsuisse Faculty, Department of Farm Animals, University of Zurich, Zurich, Switzerland
| | - Matthias Schweizer
- 3 Federal Food Safety and Veterinary Office (FSVO) and Vetsuisse Faculty, Institute of Virology and Immunology, University of Bern, Bern, Switzerland
| | - Monika Hilbe
- 1 Vetsuisse Faculty, Institute of Veterinary Pathology, University of Zurich, Zurich, Switzerland
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Vaccination of cattle against bovine viral diarrhea virus. Vet Microbiol 2017; 206:78-83. [PMID: 28400145 DOI: 10.1016/j.vetmic.2017.04.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 04/04/2017] [Accepted: 04/05/2017] [Indexed: 11/23/2022]
Abstract
Bovine viral diarrhea virus (BVDV) is responsible for significant losses to the cattle industry. Currently, modified-live viral (MLV) and inactivated viral vaccines are available against BVDV, often in combination with other viral and bacterial antigens. Inactivated and MLV vaccines provide cattle producers and veterinarians safe and efficacious options for herd immunization to limit disease associated with BVDV infection. Vaccination of young cattle against BVDV is motivated by prevention of clinical disease and limiting viral spread to susceptible animals. For reproductive-age cattle, vaccination to prevent viremia and birth of persistently infected offspring is considered more important, while also more difficult to achieve than prevention of clinical disease. Recent advances have been made in the understanding of BVDV vaccine efficacy. In terms of preventing clinical disease, current BVDV vaccines have been demonstrated to have a rapid onset of immunity and MLV vaccines can be effectively utilized in calves possessing maternal immunity. For reproductive protection, more recent studies using multivalent MLV vaccines have demonstrated consistent fetal protection rates in the range of 85-100% in experimental studies. Proper timing and administration of BVDV vaccines can be utilized to maximize vaccine efficacy to provide an important contribution to reducing risks associated with BVDV infection. With improvements in vaccine formulations and increased understanding of the protective immune response following vaccination, control of BVDV through vaccination can be enhanced.
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