Experimental infection of calves with a gI, gE, US9 negative bovine herpesvirus type 5

S. O. Hübner, A. P. Oliveira, A. C. Franco, P. A. Esteves, A. D. Silva, F. R. Spilki, F. A.M. Rijsewijk, P. M. Roehe

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

In this work, a role for the genes encoding glycoproteins I (gI) and E (gE) and the US9 protein of bovine herpesvirus type 5 (BHV-5) in neuropathogenicity and reactivation of latent infections was examined. Calves infected intranasally with a gI/gE/US9 deleted recombinant shed up to 102.85 TCID50/ml infectious virus in nasal secretions. Calves infected with the wild type BHV-5 parental virus shed up to 105 TCID50/ml virus. No signs of disease were observed in calves infected with the recombinant virus, whereas those infected with wild type virus displayed respiratory and neurological signs. The recombinant was only able to reach the basal portions of the central nervous system. In contrast, wild type virus was found widespread within the brain. Reactivation with dexamethasone 60 days post-infection resulted in reactivation of wild type virus, whereas the recombinant virus could not be reactivated. These studies demonstrate that genes gI, gE and US9 of BHV-5 are important for its neuropathogenicity and its ability to reactive from latency.

Original languageEnglish (US)
Pages (from-to)187-196
Number of pages10
JournalComparative Immunology, Microbiology and Infectious Diseases
Volume28
Issue number3
DOIs
StatePublished - May 2005
Externally publishedYes

Keywords

  • Bovine herpesvirus 5
  • Experimental infection
  • Recombinant virus
  • US9
  • gE
  • gI

ASJC Scopus subject areas

  • Microbiology
  • Immunology and Allergy
  • Immunology
  • veterinary(all)
  • Infectious Diseases

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