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Abukhadra BA, Abd El Rahman S, Soltan MA, Elhafi GE, Mosad SM. Preliminary molecular study for DIVA trial of antigenically characterized circulating bovine herpesvirus subtype 1.1 in Egypt. Virology 2024; 593:110012. [PMID: 38367473 DOI: 10.1016/j.virol.2024.110012] [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: 06/15/2023] [Revised: 01/27/2024] [Accepted: 02/05/2024] [Indexed: 02/19/2024]
Abstract
Using marker vaccines to control bovine alphaherpesvirus-1 (BoHV-1) is a novel strategy for differentiation between infected and vaccinated animals (DIVA). In this study, multiplex real-time PCR targeting gD and gE genes was applied for BoHV-1 screening on 60 clinical samples from cattle with a history of vaccination, in some cases by US2-deleted marker vaccines, that were suffering from severe respiratory symptoms. Conventional PCR targeting the gC and US2 flanking region was done for molecular characterization and identification of the US2-deleted vaccine strain. Six samples were positive for BoHV-1 by both RT-PCR and conventional PCR. Surprisingly, a conventional PCR DIVA trial based on the US2 gene revealed that only one sample that exhibited the US2 gene was a wild virus, while others that did not exhibit the US2 gene were vaccine viruses. Phylogenetic characterization classifies the samples as BoHV-1.1. This finding reveals the circulation of vaccine virus in field-diseased animals, which threatens the eradication program.
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Affiliation(s)
- Basel A Abukhadra
- Department of Virology, Faculty of Veterinary Medicine, Mansoura University, 35516 El Gomhoria Street, Mansoura, Egypt
| | - Sahar Abd El Rahman
- Department of Virology, Faculty of Veterinary Medicine, Mansoura University, 35516 El Gomhoria Street, Mansoura, Egypt.
| | - Mohamed A Soltan
- Department of Veterinary Medicine, Infectious Diseases Division, Faculty of Veterinary Medicine, Suez Canal University, 41522, Ismailia, Egypt
| | - Giuma E Elhafi
- Department of Microbiology, Faculty of Agriculture and Veterinary Medicine, Azzaytuna University, Tarhuna, Libya
| | - Samah M Mosad
- Department of Virology, Faculty of Veterinary Medicine, Mansoura University, 35516 El Gomhoria Street, Mansoura, Egypt
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2
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Abd El Rahman S, Abukhadra BA, Soltan MA, Elhafi GE, Mosad SM. US2 Gene Flanking Region as Valuable Diagnostic Tool for DIVA Trial of Antigenically Characterized Circulating Bovine Herpesvirus Subtype 1.1 in Egypt.. [DOI: 10.2139/ssrn.4502738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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3
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Gioacchini FM, Ferlito S, Ralli M, Scarpa A, La Mantia I, Re M, Romani L, Di Stadio A. Nasal Microbiota and Neuroinflammation: Relationship between Nasal Flora and Multiple Sclerosis Onset/Progression. LIFE (BASEL, SWITZERLAND) 2022; 12:life12122043. [PMID: 36556408 PMCID: PMC9788357 DOI: 10.3390/life12122043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 11/29/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022]
Abstract
The role of nasal microbiota in contributing to neuroinflammation is gradually emerging. Multiple sclerosis and chronic rhinosinusitis share important clinical and epidemiological similarities, and the hypothetical connection among these two pathological entities should be carefully investigated. This editorial is based on a review of available literature on this topic. The main international databases were searched using the following keywords: neuroinflammation, nasal microbiota, multiple sclerosis, chronic rhino-sinusal disorders, chronic sinusitis. Four fully-consistent articles that investigated nasal microbiota alteration and/or chronic rhinosinusitis presence in subjects affected by multiple sclerosis were identified. Overall, these studies showed a significant connection between nasal microbiota dysbiosis and the presence of multiple sclerosis. New specific studies to analyze the nasal microbiota and its metabolism in patients affected by multiple sclerosis should be performed. In fact, a series of treatments able to change this flora could improve the rhino-sinusal state with consequent reduction of recurrent episodes of neuro-inflammation.
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Affiliation(s)
- Federico Maria Gioacchini
- ENT Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60121 Ancona, Italy
| | - Salvatore Ferlito
- GF Ingrassia Department, Otolaryngology, University of Catania, 95124 Catania, Italy
| | - Massimo Ralli
- Organ of Sense Department, University La Sapienza of Rome, 00185 Roma, Italy
| | - Alfonso Scarpa
- Otolaryngology Department, University of Salerno, 84084 Fisciano, Italy
| | - Ignazio La Mantia
- GF Ingrassia Department, Otolaryngology, University of Catania, 95124 Catania, Italy
| | - Massimo Re
- ENT Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60121 Ancona, Italy
| | - Luigina Romani
- Microbiology Department, University of Perugia, 06123 Perugia, Italy
| | - Arianna Di Stadio
- GF Ingrassia Department, Otolaryngology, University of Catania, 95124 Catania, Italy
- Correspondence: or
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Xie J, Tian S, Liu J, Cao R, Yue P, Cai X, Shang Q, Yang M, Han L, Zhang DK. Dual role of the nasal microbiota in neurological diseases—An unignorable risk factor or a potential therapy carrier. Pharmacol Res 2022; 179:106189. [DOI: 10.1016/j.phrs.2022.106189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/06/2022] [Accepted: 03/17/2022] [Indexed: 12/11/2022]
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5
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Kumar N, Chander Y, Riyesh T, Khandelwal N, Kumar R, Kumar H, Tripathi BN, Barua S. Isolation and characterization of bovine herpes virus 5 (BoHV5) from cattle in India. PLoS One 2020; 15:e0232093. [PMID: 32330151 PMCID: PMC7182196 DOI: 10.1371/journal.pone.0232093] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/07/2020] [Indexed: 12/11/2022] Open
Abstract
Bovine herpesvirus 1 (BoHV1) and 5 (BoHV5) are genetically and antigenically related alphaherpesviruses. Infection with one virus induces protective immunity against the other. However, disease associated with BoHV1 and BoHV5 varies significantly; whereas BoHV1 infection is usually associated with rhinotracheitis and abortion, BoHV5 causes encephalitis in cattle. BoHV5 outbreaks are sporadic and mainly restricted to the South American countries. We report BoHV5 infection for the first time from aborted cattle in India. Based on the characteristic cytopathic effects in MDBK cells, amplification of the viral genome by PCR, differential PCR for BoHV1/BoHV5, nucleotide sequencing and restriction endonuclease patterns, identity of the virus was confirmed as BoHV5 subtype A. Serum samples from the aborted cattle strongly neutralized both BoHV1 and BoHV5 suggesting an active viral infection in the herd. Upon UL27, UL44 and UL54 gene-based sequence and phylogenetic analysis, the isolated virus clustered with BoHV5 strains and showed highest similarity with the Brazilian BoHV5 strains.
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Affiliation(s)
- Naveen Kumar
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
- * E-mail: (NK); (SB); (BNT)
| | - Yogesh Chander
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
| | - Thachamvally Riyesh
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
| | - Nitin Khandelwal
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
| | - Ram Kumar
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
| | - Harish Kumar
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
| | - Bhupendra N. Tripathi
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
- * E-mail: (NK); (SB); (BNT)
| | - Sanjay Barua
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
- * E-mail: (NK); (SB); (BNT)
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6
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Marin M, Burucúa M, Rensetti D, Rosales JJ, Odeón A, Pérez S. Distinctive features of bovine alphaherpesvirus types 1 and 5 and the virus-host interactions that might influence clinical outcomes. Arch Virol 2019; 165:285-301. [PMID: 31845150 DOI: 10.1007/s00705-019-04494-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 11/09/2019] [Indexed: 12/14/2022]
Abstract
Bovine herpesvirus types 1 (BoHV-1) and 5 (BoHV-5) are two closely related alphaherpesviruses. BoHV-1 causes several syndromes in cattle, including respiratory disease and sporadic cases of encephalitis, whereas BoHV-5 is responsible for meningoencephalitis in calves. Although both viruses are neurotropic, they differ in their neuropathogenic potential. This review summarizes the findings on the specific mechanisms and pathways known to modulate the pathogenesis of BoHV-1 and BoHV-5, particularly in relation to respiratory and neurological syndromes, which characterize BoHV-1 and BoHV-5 infections, respectively.
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Affiliation(s)
- Maia Marin
- Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Balcarce, Ruta 226 Km 73.5, Balcarce, 7620, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Rivadavia 1917, C1033AAJ, Buenos Aires, Argentina
| | - Mercedes Burucúa
- Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Balcarce, Ruta 226 Km 73.5, Balcarce, 7620, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Rivadavia 1917, C1033AAJ, Buenos Aires, Argentina
| | - Daniel Rensetti
- Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Paraje Arroyo Seco S/N, 7000, Tandil, Argentina
| | - Juan José Rosales
- Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Paraje Arroyo Seco S/N, 7000, Tandil, Argentina.,Centro de Investigación Veterinaria de Tandil (CIVETAN)-CONICET, Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Paraje Arroyo Seco S/N, 7000, Tandil, Argentina
| | - Anselmo Odeón
- Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Balcarce, Ruta 226 Km 73.5, Balcarce, 7620, Buenos Aires, Argentina
| | - Sandra Pérez
- Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Paraje Arroyo Seco S/N, 7000, Tandil, Argentina. .,Centro de Investigación Veterinaria de Tandil (CIVETAN)-CONICET, Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Paraje Arroyo Seco S/N, 7000, Tandil, Argentina.
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7
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Immunization of bighorn sheep against Mannheimia haemolytica with a bovine herpesvirus 1-vectored vaccine. Vaccine 2017; 35:1630-1636. [DOI: 10.1016/j.vaccine.2017.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 01/27/2017] [Accepted: 02/01/2017] [Indexed: 11/18/2022]
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8
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The latency related gene of bovine herpesvirus types 1 and 5 and its modulation of cellular processes. Arch Virol 2016; 161:3299-3308. [DOI: 10.1007/s00705-016-3067-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 09/14/2016] [Indexed: 12/14/2022]
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9
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Traesel CK, Bernardes LM, Spilki FR, Weiblen R, Flores EF. Sequence analysis of the 5' third of glycoprotein C gene of South American bovine herpesviruses 1 and 5. ACTA ACUST UNITED AC 2015; 48:470-8. [PMID: 25760029 PMCID: PMC4445672 DOI: 10.1590/1414-431x20144266] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 11/11/2014] [Indexed: 11/22/2022]
Abstract
Bovine herpesviruses 1 (BoHV-1) and 5 (BoHV-5) share high genetic and antigenic
similarities, but exhibit marked differences in tissue tropism and neurovirulence.
The amino-terminal region of glycoprotein C (gC), which is markedly different in each
of the viruses, is involved in virus binding to cellular receptors and in
interactions with the immune system. This study investigated the genetic and
antigenic differences of the 5′ region of the gC (5′ gC) gene (amino-terminal) of
South American BoHV-1 (n=19) and BoHV-5 (n=25) isolates. Sequence alignments of 374
nucleotides (104 amino acids) revealed mean similarity levels of 97.3 and 94.2% among
BoHV-1 gC (gC1), respectively, 96.8 and 95.6% among BoHV-5 gC (gC5), and 62 and 53.3%
between gC1 and gC5. Differences included the absence of 40 amino acid residues (27
encompassing predicted linear epitopes) scattered throughout 5′ gC1 compared to 5′
gC5. Virus neutralizing assays testing BoHV-1 and BoHV-5 antisera against each
isolate revealed a high degree of cross-neutralization between the viruses, yet some
isolates were neutralized at very low titers by heterologous sera, and a few BoHV-5
isolates reacted weakly with either sera. The virus neutralization differences
observed within the same viral species, and more pronounced between BoHV-1 and
BoHV-5, likely reflect sequence differences in neutralizing epitopes. These results
demonstrate that the 5′ gC region is well conserved within each viral species but is
divergent between BoHV-1 and BoHV-5, likely contributing to their biological and
antigenic differences.
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Affiliation(s)
- C K Traesel
- Setor de Virologia, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - L M Bernardes
- Setor de Virologia, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - F R Spilki
- Laboratório de Microbiologia Molecular, Universidade Feevale, Novo Hamburgo, RS, Brasil
| | - R Weiblen
- Setor de Virologia, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - E F Flores
- Setor de Virologia, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
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10
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Validation of a reference control for an SYBR-Green fluorescence assay-based real-time PCR for detection of bovine herpesvirus 5 in experimentally exposed bovine embryos. Mol Cell Probes 2013; 27:237-42. [PMID: 23831485 DOI: 10.1016/j.mcp.2013.06.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 06/12/2013] [Accepted: 06/17/2013] [Indexed: 11/22/2022]
Abstract
The objective of this study was to optimize an internal control to improve SYBR-Green-based qPCR to amplify/detect the BoHV-5 US9 gene in bovine embryos produced in vitro and experimentally exposed to the virus. We designed an SYBR-Green-based binding assay that is quick to perform, reliable, easily optimized and compares well with the published assay. Herein we demonstrated its general applicability to detect BoHV-5 US9 gene in bovine embryos produced in vitro experimentally exposed to BoHV-5. In order to validate the assay, three different reference genes were tested; and the histone 2a gene was shown to be the most adequate for normalizing the qPCR reaction, by considering melting and standard curves (p < 0.05). On the other hand, no differences were found in the development of bovine embryos in vitro whether they were exposed to BoHV-5 reference and field strains comparing to unexposed embryos. The developed qPCR assay may have important field applications as it provides an accurate BoHV-5 US9 gene detection using a proven reference gene and is considerably less expensive than the TaqMan qPCR currently employed in sanitary programs.
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11
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12
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Human herpesvirus-6 entry into the central nervous system through the olfactory pathway. Proc Natl Acad Sci U S A 2011; 108:13734-9. [PMID: 21825120 DOI: 10.1073/pnas.1105143108] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Viruses have been implicated in the development of neurodegenerative diseases, such as Alzheimer's, Parkinson's, and multiple sclerosis. Human herpesvirus-6 (HHV-6) is a neurotropic virus that has been associated with a wide variety of neurologic disorders, including encephalitis, mesial temporal lobe epilepsy, and multiple sclerosis. Currently, the route of HHV-6 entry into the CNS is unknown. Using autopsy specimens, we found that the frequency of HHV-6 DNA in the olfactory bulb/tract region was among the highest in the brain regions examined. Given this finding, we investigated whether HHV-6 may infect the CNS via the olfactory pathway. HHV-6 DNA was detected in a total of 52 of 126 (41.3%) nasal mucous samples, showing the nasal cavity is a reservoir for HHV-6. Furthermore, specialized olfactory-ensheathing glial cells located in the nasal cavity were demonstrated to support HHV-6 replication in vitro. Collectively, these results support HHV-6 utilization of the olfactory pathway as a route of entry into the CNS.
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Brum MCS, Dos Santos CMB, Weiblen R, Flores EF. Selection and characterization of brivudin resistant bovine herpesvirus type 5. Braz J Microbiol 2010; 41:124-32. [PMID: 24031472 PMCID: PMC3768616 DOI: 10.1590/s1517-838220100001000019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2008] [Revised: 06/23/2009] [Accepted: 08/22/2009] [Indexed: 11/23/2022] Open
Abstract
Bovine herpesvirus type 5 (BoHV-5) is the agent of meningoencephalitis, an important disease of cattle in South America. The neuropathogenesis of BoHV-5 infection is poorly understood and most previous research focused on the role of envelope glicoproteins in neurovirulence. Thymidine kinase (TK) is a viral enzyme necessary for virus replication in neurons and, therefore, represents a potential target for virus attenuation. The selection and characterization of BoHV-5 variants resistant to the nucleoside analog brivudin (BVDU), which selects TK-defective viruses is here described. Several BVDU-resistant clones were obtained after multiple passages in tissue culture in the presence of BVDU and one clone (BoHV-5/R-27) was further characterized. The selected clone replicated to similar titers and produced plaques with similar size and morphology to those of wild-type virus (SV507/99). The genetic stability of the resistant virus was demonstrated after ten passages in cell culture in the absence of the drug. Moreover, the drug-resistant virus showed reduced virulence in a rabbit model: virus inoculation in four rabbits did not result in disease, in contrast with 75% morbidity (3/4) and 50% mortality (2/2) among rabbits inoculated with the parental virus. These results demonstrate that BoHV-5 is sensitive to BVDU and that drug-resistant mutants can be readily selected upon BVDU treatment. BVDU-resistant mutants, likely defective in TK, retained their ability to replicate in tissue culture yet were attenuated for rabbits. This strategy to obtain TK-defective BoHV-5 may be useful to study the role of TK in BoHV-5 neuropathogenesis and for vaccine development.
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Affiliation(s)
- Mário Celso Sperotto Brum
- Programa de Pós-Graduação em Medicina Veterinária, Centro de Ciências Rurais, Universidade Federal de Santa Maria , Santa Maria, RS , Brasil
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Silva-Frade C, Martins A, Borsanelli AC, Cardoso TC. Effects of bovine Herpesvirus Type 5 on development of in vitro-produced bovine embryos. Theriogenology 2009; 73:324-31. [PMID: 19896706 DOI: 10.1016/j.theriogenology.2009.09.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2009] [Revised: 09/09/2009] [Accepted: 09/14/2009] [Indexed: 11/26/2022]
Abstract
Bovine (Bos indicus) herpesviruses have been associated with reproductive disease. Type 1, the most studied species, is best known for its reproductive and respiratory effects. Type 5 (BoHV-5) has been detected in bull semen and aborted fetuses but not in oocytes and embryos. This study consisted of three experiments that evaluated (1) BoHV-5-infected oocytes matured in medium with fetal bovine serum (BoHV-FBS) or polyvinyl alcohol (BoHV-PVA) and fertilized by noninfected sperm; (2) noninfected oocytes fertilized by BoHV-5-infected sperm; and (3) infection of presumptive zygotes by BoHV-5. Each treatment involved nine drops of 15 to 20 oocytes. Infection with BoHV-5 was detected by polymerase chain reaction and in situ hybridization assay, and fertilization capacity and embryonic development were assessed using in vitro culture. Experimentally induced infection was obtained in all experiments, and vertical transmission of BoHV-5 by gametes was confirmed. The cleavage rate was reduced (P=0.0201) in BoHV-FBS (80.4+/-8.9%; mean+/-SD) compared with that of noninfected oocytes (89.9+/-6.5%); neither differed from BoHV-PVA (87.3+/-7.1%), and the resulting embryo production rate was not significantly different among groups. Rates of cleavage (87.5+/-7.5% vs. 92.2+/-5.5%, control vs. infected) and development of embryos (41.7+/-9.9% vs. 44.3+/-7.7% to morula/blastocyst/expanded blastocyst [M/B/EB] and 39.6+/-10.3% vs. 40.8+/-9.2% to blastocyst/expanded blastocyst/hatching blastocyst [B/EB/HB] stages) were not compromised by infected sperm (P=0.1462, P=0.5402, and P=0.8074, respectively). However, presumptive zygotes directly infected 1 d after fertilization produced a lower number (P=0.0140 to M/B/EB and P=0.002 to B/EB/HB stages) of in vitro-produced embryos (31.6+/-4.6 vs. 25.0+/-5.5 and 31.6+/-4.6 vs. 20.2+/-5.4; control vs. infected). In conclusion, BoHV-5 infected gametes and was transmissible to the embryo during in vitro development. As zygotes infected 1 d after fertilization had compromised development, BoHV-5 has the potential to be a pathogen with economic consequences.
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Affiliation(s)
- C Silva-Frade
- Laboratory of Animal Virology, College of Veterinary Medicine, UNESP-São Paulo State University, São Paulo, Brazil.
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15
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Del Médico Zajac MP, Ladelfa MF, Kotsias F, Muylkens B, Thiry J, Thiry E, Romera SA. Biology of bovine herpesvirus 5. Vet J 2009; 184:138-45. [PMID: 19409823 DOI: 10.1016/j.tvjl.2009.03.035] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2009] [Revised: 03/27/2009] [Accepted: 03/30/2009] [Indexed: 11/25/2022]
Abstract
Bovine herpesvirus 5 (BoHV-5) is an alphaherpesvirus responsible for meningoencephalitis in young cattle and is closely antigenically and genetically related to bovine herpesvirus 1 (BoHV-1). Both viruses have common aspects in their pathogenesis: (1) they infect epithelial cells at the portal of entry and (2) they establish a latent infection in the sensory nerve ganglia, i.e., the trigeminal ganglia. However, they have different neuroinvasion and neurovirulence capacities. Only in rare cases can BoHV-1 reach the brain of infected cattle. BoHV-5 infection induces different degrees of severity of neurological disease depending on both viral and host factors. Although a case of BoHV-5 associated disease in Europe and some outbreaks in USA and Australia have been reported, the current geographical distribution of BoHV-5 infection is mainly restricted to South America, especially Brazil and Argentina. This review focuses on the genomic characteristics, pathobiology and epidemiology of BoHV-5, in order to provide information on the possible basis of alphaherpesvirus neuropathogenesis.
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Affiliation(s)
- María P Del Médico Zajac
- Virology Institute, Veterinary and Agricultural Science Research Centre, National Institute of Agricultural Technology, N. Repeto y Los Reseros S/N, CC25 (B1712WAA), Castelar, Buenos Aires, Argentina
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16
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Flores EF, Weiblen R, Vogel FSF, Dezengrini R, Almeida SRD, Spilki FR, Roehe PM. Neuropatogênese experimental da infecção pelo herpesvírus bovino tipo 5 em coelhos. PESQUISA VETERINÁRIA BRASILEIRA 2009. [DOI: 10.1590/s0100-736x2009000100001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Vários aspectos da biologia do herpesvírus bovino tipo 5 (BoHV-5) têm sido estudados em coelhos, que desenvolvem infecção aguda e doença neurológica após inoculação experimental. A infecção aguda é seguida pelo estabelecimento de infecção latente, que pode ser reativada natural ou artificialmente. Os primeiros experimentos nesta espécie estabeleceram um protocolo de inoculação e monitoramento da infecção, e caracterizaram os principais aspectos virológicos, clínicos e patológicos da infecção aguda. A patogenia da infecção aguda, desde a replicação viral nos sítios de inoculação, vias e cinética de transporte viral até o encéfalo, distribuição e replicação viral no sistema nervoso central (SNC), tropismo celular e tecidual, manifestações clínicas e patologia no SNC foram detalhadamente estudados nestes animais. Posteriormente, vários aspectos biológicos e moleculares da infecção latente também foram elucidados a partir de inoculações de coelhos. Os coelhos também têm sido utilizados para estudar o fenótipo (neuroinvasividade, neurovirulência) de isolados de campo e de cepas vacinais recombinantes, proteção por imunidade passiva, proteção vacinal, eficácia de drogas anti-virais e terapêuticas de suporte da infecção neurológica. Este modelo experimental também foi utilizado para o estudo da origem e distribuição dos estímulos elétricos produzidos durante as convulsões - uma característica da infecção neurológica pelo BoHV-5 -, e para testes de medicamentos anti-convulsivantes. Ressalvadas as diferenças que certamente existem entre bovinos - os hospedeiros naturais - e coelhos, as observações oriundas deste modelo experimental tem contribuído sobremaneira para o conhecimento da biologia do BoHV-5. O presente trabalho apresenta uma coletânea de resultados e observações, publicadas ou não pelo grupo, ao longo de mais de uma década, envolvendo inoculações de coelhos para estudar diversos aspectos da infecção pelo BoHV-5.
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Affiliation(s)
| | | | | | | | | | | | - Paulo Michel Roehe
- Fepagro Saúde Animal, Brasil; Universidade Federal do Rio Grande do Sul, Brasil
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Brower A, Homb KM, Bochsler P, Porter R, Woods K, Ubl S, Krueger D, Cigel F, Toohey-Kurth K. Encephalitis in aborted bovine fetuses associated with Bovine herpesvirus 1 infection. J Vet Diagn Invest 2008; 20:297-303. [PMID: 18460615 DOI: 10.1177/104063870802000306] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Brain tissue from 12 aborted bovine fetuses submitted to the Wisconsin Veterinary Diagnostic Laboratory revealed histologic lesions that consisted of glial nodules and variable degrees of mononuclear inflammation, microhemorrhage, neuronal necrosis, and cerebral cortical cavitation. A diagnosis of Bovine herpesvirus 1 (BHV-1) abortion had been made in all of these cases through multiple testing modalities. Brain tissue from 8 of the 12 fetuses was immunohistochemically stained with a monoclonal antibody specific to BHV-1, and, in 5 fetuses, there was positive intralesional staining of neurons, glial cells, and endothelial cells. This preliminary data suggested that herpesviral infection of brain tissue led to the described neurologic lesions. BHV-1 was then amplified from brain tissue in all 12 of the fetuses and was confirmed by partial sequencing of the thymidine kinase and glycoprotein C genes. To the authors' knowledge, neurologic lesions have not previously been described in BHV-1-infected fetuses, nor has BHV-1 previously been identified in bovine fetal brain tissue. The neurologic histopathology attributed to BHV-1 infection in these cases overlaps with the neurologic lesions produced by Neospora caninum, a common etiologic agent of bovine abortion. Therefore, when bovine fetal neurologic lesions are found, both etiologies should be considered and then distinguished by using additional diagnostic tools.
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Affiliation(s)
- Alexandra Brower
- Wisconsin Veterinary Diagnostic Laboratory, University of Wisconsin, Madison, WI 53706, USA.
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18
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Mori I, Nishiyama Y, Yokochi T, Kimura Y. Olfactory transmission of neurotropic viruses. J Neurovirol 2005; 11:129-37. [PMID: 16036791 DOI: 10.1080/13550280590922793] [Citation(s) in RCA: 112] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Olfactory receptor neurons are unique in their anatomical structure and function. Each neuron is directly exposed to the external environment at the site of its dendritic nerve terminals where it is exposed to macromolecules. These molecules can be incorporated into by olfactory receptor neurons and transported transsynaptically to the central nervous system. Certain neurotropic pathogens such as herpes simplex virus and Borna disease virus make use of this physiological mechanism to invade the brain. Here the authors review the olfactory transmission of infectious agents and the resulting hazards to human and animal health.
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Affiliation(s)
- Isamu Mori
- Department of Microbiology and Immunology, Research Center for Infectious Disease, Aichi Medical University School of Medecine, Aichi, Japan.
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19
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Meurens F, Keil GM, Muylkens B, Gogev S, Schynts F, Negro S, Wiggers L, Thiry E. Interspecific recombination between two ruminant alphaherpesviruses, bovine herpesviruses 1 and 5. J Virol 2004; 78:9828-36. [PMID: 15331717 PMCID: PMC514992 DOI: 10.1128/jvi.78.18.9828-9836.2004] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2004] [Accepted: 05/03/2004] [Indexed: 11/20/2022] Open
Abstract
Homologous recombination between different species of alphaherpesviruses has been described between herpes simplex viruses 1 and 2 but has not yet been observed between other alphaherpesviruses. In the present study we chose to assess to what extent in vitro recombination can occur between members of a well-defined group of closely related viruses such as ruminant alphaherpesviruses. At 24 h after infection of epithelial bovine kidney cells with a double-deleted mutant of bovine herpesvirus 1 (BoHV-1) (containing green fluorescent protein and red fluorescent protein genes) and different ruminant alphaherpesviruses, four types of progeny viruses were detected and distinguished according to their phenotype. Frequent recombination events between identical or different strains of BoHV-1 were observed (up to 30%), whereas only two BoHV-1/BoHV-5 recombinants were identified, and no recombinants between BoHV-1 and less closely related caprine and cervine herpesviruses were detected. Restriction analysis of the genomes of the two BoHV-1/BoHV-5 recombinants showed different genetic backgrounds. One possessed a restriction pattern close to BoHV-1, whereas the other one was close to BoHV-5. This exhaustive analysis of each combination of coinfection in a unique situation of five closely related alphaherpesviruses revealed the importance of a high degree of genetic relatedness and similar parental virus growth kinetics for successful interspecific recombination.
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MESH Headings
- Alphaherpesvirinae/genetics
- Alphaherpesvirinae/isolation & purification
- Animals
- Antibodies, Monoclonal
- Antibodies, Viral
- Cattle
- Cell Line
- Crossing Over, Genetic
- Deer
- Goats
- Green Fluorescent Proteins
- Herpesvirus 1, Bovine/genetics
- Herpesvirus 1, Bovine/immunology
- Herpesvirus 1, Bovine/isolation & purification
- Herpesvirus 5, Bovine/genetics
- Herpesvirus 5, Bovine/immunology
- Herpesvirus 5, Bovine/isolation & purification
- In Vitro Techniques
- Luminescent Proteins/genetics
- Mutation
- Recombinant Proteins/genetics
- Recombination, Genetic
- Species Specificity
- Varicellovirus/genetics
- Varicellovirus/isolation & purification
- Red Fluorescent Protein
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Affiliation(s)
- François Meurens
- Department of Infectious and Parasitic Diseases, Laboratory of Virology, Faculty of Veterinary Medicine, University of Liège, Boulevard de Colonster, 20, B43b, B-4000 Sart-Tilman, Liège, Belgium
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20
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Abril C, Engels M, Liman A, Hilbe M, Albini S, Franchini M, Suter M, Ackermann M. Both viral and host factors contribute to neurovirulence of bovine herpesviruses 1 and 5 in interferon receptor-deficient mice. J Virol 2004; 78:3644-53. [PMID: 15016885 PMCID: PMC371052 DOI: 10.1128/jvi.78.7.3644-3653.2004] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Herpes simplex virus (HSV) type 1 and bovine herpesviruses 1 and 5 (BHV-1 and BHV-5) can use the same cellular receptor for entry, but only HSV is known to cause disease in mice. We hypothesized that components of either the innate or the adaptive immune system, or a combination of both, were responsible for curbing replication of BHVs in mice. Therefore, wild-type mice as well as mice with various combined genetic deficiencies in the alpha/beta interferon receptor or gamma interferon receptor and in the ability to produce mature B and T lymphocytes (RAG-2 deletion) were infected with BHV-1 and BHV-5 and monitored clinically, serologically, histopathologically, and virologically. A functional immune system protected the mice from disease and death due to BHV infection, and the immune response was Th1 like. BHV-5 was transported to the central nervous system by the axonal pathway, whereas viremia was required for this outcome with BHV-1. The alpha/beta interferon system was able to obstruct quantitative spread of the viruses in the infected organism. The gamma interferon system had a protective effect against BHV-1, even in mice with the RAG-2 deletion. In contrast, the same mice succumbed to neurological disease and death upon infection with BHV-5. Productively infected neurons were detected only in BHV-5-infected mice with an intact gamma interferon system. We conclude that the alpha/beta interferon system had a protective effect, while an intact gamma interferon system was required for efficient replication of BHV-5 in mouse neurons and for the development of neurological disease.
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MESH Headings
- Animals
- Axonal Transport
- Brain/virology
- Cattle
- DNA, Viral/analysis
- DNA, Viral/genetics
- Disease Models, Animal
- Herpesviridae Infections/immunology
- Herpesviridae Infections/virology
- Herpesvirus 1, Bovine/genetics
- Herpesvirus 1, Bovine/immunology
- Herpesvirus 1, Bovine/pathogenicity
- Herpesvirus 1, Bovine/physiology
- Herpesvirus 5, Bovine/genetics
- Herpesvirus 5, Bovine/immunology
- Herpesvirus 5, Bovine/pathogenicity
- Herpesvirus 5, Bovine/physiology
- Interferon-gamma/immunology
- Mice
- Neurons/virology
- Receptors, Interferon/deficiency
- Th1 Cells/immunology
- Viremia
- Virulence
- Virus Replication
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Affiliation(s)
- Carlos Abril
- Institute of Virology. Institute of Veterinary Pathology, University of Zurich, Zurich, Switzerland
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21
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Delhon G, Moraes MP, Lu Z, Afonso CL, Flores EF, Weiblen R, Kutish GF, Rock DL. Genome of bovine herpesvirus 5. J Virol 2003; 77:10339-47. [PMID: 12970418 PMCID: PMC228503 DOI: 10.1128/jvi.77.19.10339-10347.2003] [Citation(s) in RCA: 109] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2003] [Accepted: 07/02/2003] [Indexed: 11/20/2022] Open
Abstract
Here we present the complete genomic sequence of bovine herpesvirus 5 (BHV-5), an alphaherpesvirus responsible for fatal meningoencephalitis in cattle. The 138390-bp genome encodes 70 putative proteins and resembles the alpha2 subgroup of herpesviruses in genomic organization and gene content. BHV-5 is very similar to BHV-1, the etiological agent of infectious bovine rhinotracheitis, as reflected by the high level of amino acid identity in their protein repertoires (average, 82%). The highest similarity to BHV-1 products (>or=95% amino acid identity) is found in proteins involved in viral DNA replication and processing (UL5, UL15, UL29, and UL39) and in virion proteins (UL14, UL19, UL48, and US6). Among the least conserved (
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Affiliation(s)
- G Delhon
- Plum Island Animal Disease Center, Agricultural Research Service, U.S. Department of Agriculture, Greenport, New York 11944, USA
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22
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Spilki FR, Esteves PA, Franco AC, Lima M, Holz CL, Batista HBR, Driemeier D, Flores EF, Weiblen R, Roehe PM. Neurovirulência e neuroinvasividade de herpesvírus bovinos tipos 1 e 5 em coelhos. PESQUISA VETERINARIA BRASILEIRA 2002. [DOI: 10.1590/s0100-736x2002000200005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Com o objetivo de avaliar a capacidade dos herpesvírus bovinos tipos 1 e 5 (BHV-1 e BHV-5) de invadir e replicar no sistema nervoso central (SNC) (neuroinvasividade), bem como sua capacidade de induzir doença neurológica (neurovirulência), coelhos com 30 a 35 dias de idade foram inoculados com uma amostra do Herpesvírus da Encefalite Bovina (BHV-5; amostra EVI 88/95) ou com amostras de BHV-1 (Los Angeles ou Cooper), pelas vias intratecal (IT) e intranasal (IN). A inoculação da amostra de BHV-5, tanto pela via IT como IN, induziu sinais clínicos neurológicos em 100% (12/12) dos coelhos inoculados. Os exames histopatológicos revelaram um quadro de meningoencefalite não-purulenta multifocal, caracterizada por gliose multifocal e infiltrados perivasculares. O vírus foi isolado de várias áreas do SNC desses animais. As amostras de BHV-1, quando inoculadas pela via IT, não foram neurovirulentas. A amostra Los Angeles de BHV-1, quando administrada pela via IN, induziu sinais respiratórios severos, além de sinais neurológicos em 57% (4/7) dos animais inoculados. Entretanto, o exame histopatológico destes quatro animais revelou vasculite e trombose no pulmão e cérebro, este último apresentando focos de necrose neuronal, porém sem lesões indicativas de encefalite. Isso sugere que os sinais neurológicos foram, provavelmente, conseqüentes a prejuízos no fluxo sangüíneo encefálico, e não a danos neuronais provocados pela inoculação desse vírus. A amostra Cooper de BHV-1, quando inoculada pela via IN, induziu apenas sinais leves de infecção respiratória. Estes resultados indicam que apenas a amostra de BHV-5 foi capaz de invadir e replicar no encéfalo dos coelhos quando inoculada tanto por via IN como IT, apresentando neuroinvasividade e neurovirulência. É possível que estas observações tenham relação com o fato de amostras de BHV-5 freqüentemente causarem encefalites, em contraposição a infecções pelo BHV-1, onde encefalites são raramente observadas.
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Affiliation(s)
| | | | - Ana Cláudia Franco
- Centro de Pesquisas Veterinárias Desidério Finamor, Brazil; Universidade Luterana do Brasil
| | - M. Lima
- Centro de Pesquisas Veterinárias Desidério Finamor, Brazil; UFSM
| | - Carine L. Holz
- Centro de Pesquisas Veterinárias Desidério Finamor, Brazil
| | | | | | | | | | - Paulo M. Roehe
- Centro de Pesquisas Veterinárias Desidério Finamor, Brazil; UFRGS
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