A retrospective analysis of the infectious bovine rhinotracheitis (bovine herpes virus-1) surveillance program in Norway

Additionally, the results of this study may indicate that the nervous system is one of the sites of viral latency in natural infection. This putative BHV-1 open reading frame contained the four conserved regions of the alphaherpesvirus vhs protein. A homogenate of CAM with distinct pock lesions and infected cell culture fluid developed precipitation line within 48 h against specific anti-BHV-1 immune serum by AGID test. A homogenate of CAM with distinct pock lesions and infected cell culture fluid developed precipitation line within 48 h against specific anti-BHV-1 immune serum by AGID test. Few cells become elongated when compared with uninfected controls. In summary, the ability of BHV-1 and HSV-1 to interfere with apoptosis and productive infection in sensory neurons is crucial for the life-long latency-reactivation cycle in their respective hosts. 13–23) for study of latency and reactivation.

check the pressure and clean or replace teat liners to prevent teat damage, which allows virus entry. Taken together, these results indicate that Us9 is essential for the anterograde spread of the virus from the olfactory mucosa to the bulb. These references are in PubMed. These references are in PubMed. One-step growth kinetics and virus yield of the recombinant and parent viruses were similar, but early after infection, the recombinant virus yield was comparatively less. Copyright © 2016 The Authors. The results showed that the S.

Four samples from the panel have been proposed that might be selected as reference sera in addition to the three European reference samples. The peptides encompassing amino acids 92-106 (3402 epitope) and amino acids 202-213 (R54 epitope) of the BHV-1 gD competed with BHV-1 for the binding by MAbs 3402 and R54, respectively, in a dose-dependent manner. When comparing between two methods for DNA extraction, the DNA extracted by commercial kit was found to be better in quality as compared to the DNA extracted using phenol/chloroform/isoamyl-alcohol method. This observation could be explained by a different processing pathway of BHV-1 antigens in each cell type involved. These UL24 genes had an insertion of four nts within the 274-297 nt region. In addition to describing the main features of the virion, replication, clinical signs, nomenclature problems, this review intends to concentrate on the new and strange results coming out from several laboratories worldwide. • 1 internal positive control (exogenous) to be added at the time of extraction.

Despite of being identified in the 60s in Brazil, only recently BHV-1 infections were diagnosed in a routine, by serologic techniques. A national eradication scheme is currently underway in Ireland for BVDv but no co-ordinated programme exists for the control or eradication of BoHV-1. cattle industry at least $1 billion annually. Native aprotinin possessed palpable dose-dependent antiviral effect inhibiting the virus reproduction up to 4.0 lg (10000-fold) and delaying the cytopathic effect up to 96 h in the concentration 800-3300 TIU/ml. Please contact the lab for assistance in setting up a Portal account. 47: 411–425, 1977. Since this protein is normally embedded within the membrane of BHV-1 infected cells, we removed sequences encoding the transmembrane domain of the native protein.

Another antigenically unrelated glycoprotein with a molecular weight of 82,000 and a nonglycosylated protein with a molecular weight of 91,000 were also precipitated, but the immune response to these two proteins was transient. Endometrial stromal and epithelial cells were purified and infected with a recombinant BoHV-4 carrying an enhanced green fluorescent protein (EGFP) expression cassette to monitor the establishment of infection. To determine if late viral genes contribute to target cell lysis, phosphonoacetic acid (PAA), an inhibitor of DNA polymerase activity, was used to block DNA replication that is required for expression of late viral proteins. Construction and growth properties of bovine herpesvirus type 5 recombinants defective in the glycoprotein E or thymidine kinase gene or both. No immunoperoxidase activity was observed in negative controls. Babiker, Mohamed E. Braz.

In this study, we evaluated the effect of BHV-1 infection on the ability of lung parenchyma leucocytes (LPL), cranial tracheobronchial lymph node cells (BLNC) and peripheral blood mononuclear leucocytes (PBML) to mediate this function. Taking of photographs and/or videotaping during any session is prohibited. In Argentina, two weaning practices have been implemented. Infection status of cows (infected or not infected) was assigned from serology on a single occasion. A total of 140 samples comprising of vaginal swab (n=97), placenta (n=15), whole blood (n=19), uterine fluid (n=1), and serum (n=8) were collected from 16 dairy herds showing particularly high rate of abortion and infertility in Khartoum State. N2 – Bovine herpes virus 1 establishes a latent infection in sensory ganglionic neurons of cattle. The aim of the experiment was to study whether bovine herpesvirus 1 (BHV1) marker vaccine batches known to be contaminated with bovine virus diarrhoea virus (BVDV) type 1 could cause BVD in cattle.

A seroprevalence survey of Neospora caninum and bovine herpesvirus 1 (BHV-1) was conducted in cattle pasturing in an area of the southern Italian Apennines to investigate the coinfection of these two pathogens.