Regulation of herpesvirus lifecycle by viral microRNAs

Human herpesvirus 8 partly shares the predilection of its 2 siblings for latency in lymphoid tissues but has a more variable demographic distribution. For permissions, please e-mail: The idea behind this experiment was that if a virus causes KS, the genomic DNA in the two samples should be precisely identical except for DNA belonging to the virus. ISBN 978-1-904455-09-7. Competing interests: The authors have declared that no competing interest exist. Intranasal inoculation of BHV-5 gEΔ and BHV-5gE1 produced significantly reduced neurological signs that affected only 10% of the infected rabbits. It can also be performed on neural tissues to confirm the diagnosis during a post-mortem examination.

Recently, another common mechanism of promoting herpesvirus latency has emerged: suppression of herpesvirus reactivation by cellular microRNAs (miRNAs). Barth and colleagues confirmed that miR-BART2 indeed inhibits the activity of a luciferase reporter containing the BALF5 3′UTR, and reduces the endogenous BALF5 protein level in EBV-infected cells.10 The expression levels of miR-BART2 and BALF5 were inversely correlated. H. This present study examines whether herpesviruses are present in the lesions of acute necrotizing ulcerative gingivitis. These enveloped viruses enter cells by fusing their envelopes with host cell membranes either by direct fusion at the plasma membrane or by pH-dependent or -independent endocytosis, depending on the virus and on the target cell (4). One family unique to CyHV1 is related to cellular JUNB, which encodes a transcription factor involved in oncogenesis. These results demonstrated that latent BHV-5 DNA is present in several areas of the brain during latent infection and that virus reactivation may result in the establishment of latent infection in additional sites of the brain.

In: Perkins F.O., Cheng T.C., editors. Although little is known about their functions, homologues of several betaherpesvirus-specific genes (UL49, UL79, UL87, UL88, UL91, UL92, and possibly UL95) are common to gammaherpesviruses (see Table 14.1). Some countries in Europe have successfully eradicated the disease by applying a strict culling policy. The molecular mechanisms controlling lytic replication and latent persistence of herpesviruses have been the subject of intense study in recent years, aided largely by advances made in the field of viral genetics. However, since the recombinant viruses were obtained by in vitro co-infection between a highly attenuated BoHV-1 strain (tested in this study) and BoHV-5, the evaluation of the association between genetic composition and virulence of these recombinants is limited. Human herpesviruses, particularly herpes simplex virus type 1 (HSV-1), and type 2 (HSV-2), cytomegalovirus (CMV), Epstein-Barr virus (EBV), varicella-zoster virus (VZV), and human herpesvirus 6 (HHV-6), are major agents of central nervous system infections. Occasionally it occurs elsewhere on the body or on the face.

The order Herpesvirales contains a large number of viruses that share genetic, structural, and biological properties. This paper uses herpesviruses as an alternative to cellular genomes for expanding on the COG technique and for applying it to the problem of whole-genome phylogeny. Due to the significant losses in the cattle industry, Europe has initiated a control program based on the use of marker vaccines deleted in the glycoprotein E (gE) gene. Gamma herpesviruses in humans have been associated with lymphoproliferative diseases such as Kaposi sarcoma and Burkitt lymphoma. No wheezes or crackles were detected. Glycoprotein D (gD) is accepted as the critical and essential receptor-binding protein of many alphaherpesviruses (reviewed in references 8 and 48). The diameter is around 150-200 nm.

Particular emphasis will be placed on structure-based representation of receptor binding as a trigger of fusion during herpes simplex virus entry. The scope and nature of disease caused by HHV-6 has yet to be fully defined, particularly in persons with reactivated infection. PMID 20943984. Severe necrohemorrhagic bronchopneumonia and marked pulmonary edema were noted by 5 dpi and were most severe at 7 dpi. M. An efficient amplification of real time PCR products was obtained, and a clear melting curve and appropriate melting peaks for both viruses were achieved in the HRM curve analysis for BoHV type identification. The genome sequence of EHV2 86/67 (5, 6) has been published (7).

Infection leading to both respiratory disease and abortion occurs mainly by inhalation, but also by ingestion. The review starts by introducing possible viral strategies in general. insculpta) and endangered spotted (Clemmys guttata) turtles in the northeastern United States, choanal and cloacal swabs collected from 230 turtles from 19 sites in 5 states were screened for herpesvirus by polymerase chain reaction. However, recent reports linking presence of equine gamma herpesviruses with clinical signs of mild to severe lung disease, suggest that the role of these viruses in respiratory disease and poor performance syndrome is still unclear. The natural host for the Herpes B virus. Of 24 gibbon serum samples tested, 8 (33.3%) were positive and reacted more strongly with the HSV-1 antigen than with any of the other herpesvirus antigens [5]. The gE sequence of the neurovirulent bovine herpesvirus 5 (BHV-5) was determined and compared with that of the nonneurovirulent BHV-1.