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https://www.readbyqxmd.com/read/28548685/detection-methods-of-cyprinid-herpesvirus-2-infection-in-silver-crucian-carp-carassius-auratus-gibelio-via-a-porf72-monoclonal-antibody
#1
S Y Kong, Y S Jiang, Q Wang, J F Lu, D Xu, L Q Lu
Cyprinid herpesvirus 2 (CyHV-2) is the main pathogen responsible for causing haematopoietic necrosis disease in Carassius auratus gibelio. Although many nucleic acid-based diagnostic methods have been applied, no stable and sensitive immunological diagnostic approaches have been reported. In this study, to detect CyHV-2 in clinical samples using immunological methods, recombinant ORF72 protein (pORF72), encoded by the CyHV-2 ORF72 gene, was used as a capture antigen to identify blood and tissues infected with CyHV-2...
May 26, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28545483/encephalitis-associated-with-human-herpesvirus-7-infection-in-an-immunocompetent-adult
#2
Mónica Parra, Adoración Alcala, Cristina Amoros, Anna Baeza, Antonio Galiana, David Tarragó, Miguel Ángel García-Quesada, Victoria Sánchez-Hellín
BACKGROUND: Primary Human herpesvirus-7 (HHV-7) infection usually occurs during childhood and causes several clinical manifestations: mainly exanthem subitum (roseola infantum), followed by a lifelong latent state with possible reactivation in case of immunodeficiency. Nevertheless, some considerably different approaches exist regarding the natural history of HHV-7 and the possible consequences of HHV-7 infection in immunocompetent adults. In particular, little is known about its pathogenic role in central nervous system (CNS) disease in nonimmunosuppressed adults...
May 25, 2017: Virology Journal
https://www.readbyqxmd.com/read/28543733/development-of-real-time-rt-pcr-assays-for-detection-of-three-classes-of-hhv-6a-gene-transcripts
#3
Masaru Ihira, Akiko Urashima, Hiroki Miura, Fumihiko Hattori, Yoshiki Kawamura, Ken Sugata, Tetsushi Yoshikawa
Human herpesvirus 6 (HHV-6), a member of the betaherpesvirus family, has two distinct species: HHV-6A and HHV-6B. HHV-6B real-time reverse transcription polymerase chain reaction (RT-PCR) has been used to distinguish between active and latent viral infection. In this study, we developed a real-time RT-PCR assay to detect HHV-6A-specific transcripts and evaluated its reliability for analysis of clinical samples. To develop HHV-6A-specific real-time RT-PCR assays, three different classes of gene transcripts (immediate early: U90; early: U12; and late: U100) were selected as targets...
May 23, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28542909/the-role-of-metabolic-reprogramming-in-%C3%AE-herpesvirus-associated-oncogenesis
#4
REVIEW
Angela Kwok-Fung Lo, Christopher W Dawson, Lawrence S Young, Kwok-Wai Lo
The γ-herpesviruses, EBV and KSHV, are closely associated with a number of human cancers. While the signal transduction pathways exploited by γ-herpesviruses to promote cell growth, survival and transformation have been reported, recent studies have uncovered the impact of γ-herpesvirus infection on host cell metabolism. Here, we review the mechanisms utilised by γ-herpesviruses to induce metabolic reprogramming in host cells, focusing on their ability to modulate the activity of metabolic regulators and manipulate metabolic pathways...
May 20, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28542724/viruses-and-endogenous-retroviruses-in-multiple-sclerosis-from-correlation-to-causation
#5
REVIEW
A-F A Mentis, E Dardiotis, N Grigoriadis, E Petinaki, G M Hadjigeorgiou
Multiple sclerosis is an immune-mediated disease with an environmental component. According to a long-standing but unproven hypothesis dating to initial descriptions of multiple sclerosis (MS) at the end of the 19th century, viruses are either directly or indirectly implicated in MS pathogenesis. Whether viruses in MS are principally causal or simply contributory remains to be proven, but many viruses or viral elements-predominantly Epstein-Barr virus, human endogenous retroviruses (HERVs) and human herpesvirus 6 (HHV-6) but also less common viruses such as Saffold and measles viruses-are associated with MS...
May 23, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/28542284/haemocytes-collected-from-experimentally-infected-pacific-oysters-crassostrea-gigas-detection-of-ostreid-herpesvirus-1-dna-rna-and-proteins-in-relation-with-inhibition-of-apoptosis
#6
Claire Martenot, Ophélie Gervais, Bruno Chollet, Maryline Houssin, Tristan Renault
Recent transcriptomic approaches focused on anti-viral immunity in molluscs lead to the assumption that the innate immune system, such as apoptosis, plays a crucial role against ostreid herpesvirus type 1 (OsHV-1), infecting Pacific cupped oyster, Crassostrea gigas. Apoptosis constitutes a major mechanism of anti-viral response by limiting viral spread and eliminating infected cells. In this way, an OsHV-1 challenge was performed and oysters were monitored at three times post injection to investigate viral infection and host response: 2h (early after viral injection in the adductor muscle), 24h (intermediate time), and 48h (just before first oyster mortality record)...
2017: PloS One
https://www.readbyqxmd.com/read/28542207/metagenomic-sequencing-complements-routine-diagnostics-in-identifying-viral-pathogens-in-lung-transplant-recipients-with-unknown-etiology-of-respiratory-infection
#7
Dagmara W Lewandowska, Peter W Schreiber, Macé M Schuurmans, Bettina Ruehe, Osvaldo Zagordi, Cornelia Bayard, Michael Greiner, Fabienne D Geissberger, Riccarda Capaul, Andrea Zbinden, Jürg Böni, Christian Benden, Nicolas J Mueller, Alexandra Trkola, Michael Huber
BACKGROUND: Lung transplant patients are a vulnerable group of immunosuppressed patients that are prone to frequent respiratory infections. We studied 60 episodes of respiratory symptoms in 71 lung transplant patients. Almost half of these episodes were of unknown infectious etiology despite extensive routine diagnostic testing. METHODS: We re-analyzed respiratory samples of all episodes with undetermined etiology in order to detect potential viral pathogens missed/not accounted for in routine diagnostics...
2017: PloS One
https://www.readbyqxmd.com/read/28542092/approach-to-skin-and-soft-tissue-infections-in-non-hiv-immunocompromised-hosts
#8
Victoria E Burke, Fred A Lopez
PURPOSE OF REVIEW: Skin and soft tissue infections are frequent contributors to morbidity and mortality in the immunocompromised host. This article reviews the changing epidemiology and clinical manifestations of the most common cutaneous pathogens in non-HIV immunocompromised hosts, including patients with solid organ transplants, stem cell transplants, solid tumors, hematologic malignancies, and receiving chronic immunosuppressive therapy for inflammatory disorders. RECENT FINDINGS: Defects in the innate or adaptive immune response can predispose the immunocompromised host to certain cutaneous infections in a predictive fashion...
May 24, 2017: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/28538165/the-complexity-in-herpesvirus-entry
#9
REVIEW
Karthik Sathiyamoorthy, Jia Chen, Richard Longnecker, Theodore S Jardetzky
Enveloped viruses have evolved diverse transmembrane proteins and protein complexes to enable host cell entry by regulating and activating membrane fusion in a target cell-specific manner. In general terms, the entry process requires a receptor binding step, an activation step and a membrane fusion step, which can be encoded within a single viral protein or distributed among multiple viral proteins. HIV and influenza virus, for example, encode all of these functions in a single trimeric glycoprotein, HIV env or influenza virus hemagglutinin (HA)...
May 21, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28535833/association-of-cognitive-function-and-liability-to-addiction-with-childhood-herpesvirus-infections-a-prospective-cohort-study-erratum
#10
Michael M Vanyukov, Vishwajit L Nimgaonkar, Levent Kirisci, Galina P Kirillova, Maureen D Reynolds, Konasale Prasad, Ralph E Tarter, Robert H Yolken
No abstract text is available yet for this article.
May 24, 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/28534512/a-viral-microrna-downregulates-metastasis-suppressor-cd82-and-induces-cell-invasion-and-angiogenesis-by-activating-the-c-met-signaling
#11
W Li, M Hu, C Wang, H Lu, F Chen, J Xu, Y Shang, F Wang, J Qin, Q Yan, B J Krueger, R Renne, S-J Gao, C Lu
Kaposi's sarcoma (KS) as the most common AIDS-associated malignancy is etiologically caused by KS-associated herpesvirus (KSHV). KS is a highly disseminated and vascularized tumor. KSHV encodes 12 pre-microRNAs that yield 25 mature microRNAs (miRNAs), but their roles in KSHV-induced tumor metastasis and angiogenesis remain largely unclear. KSHV-encoded miR-K12-6 (miR-K6) can generate two mature miRNAs, miR-K6-5p and miR-K6-3p. Recently, we have shown that miR-K6-3p induced cell migration and angiogenesis via directly targeting SH3 domain binding glutamate-rich protein (SH3BGR)...
May 22, 2017: Oncogene
https://www.readbyqxmd.com/read/28534034/clinical-and-mucosal-immune-correlates-of-hiv-1-semen-levels-in-antiretroviral-naive-men
#12
Brendan J W Osborne, Angie K Marsh, Sanja Huibner, Kamnoosh Shahabi, Cindy Liu, Tania Contente, Nico J D Nagelkerke, Colin Kovacs, Erika Benko, Lance Price, Kelly S MacDonald, Rupert Kaul
BACKGROUND: This study was done to characterize parameters associated with semen human immunodeficiency virus (HIV)-1 ribonucleic acid (RNA) viral load (VL) variability in HIV-infected, therapy-naive men. METHODS: Paired blood and semen samples were collected from 30 HIV-infected, therapy-naive men who have sex with men, and 13 participants were observed longitudinally for up to 1 year. Human immunodeficiency virus RNA, bacterial load by 16S RNA, herpesvirus (Epstein-Barr virus and cytomegalovirus [CMV]) shedding, and semen cytokines/chemokines were quantified, and semen T-cell subsets were assessed by multiparameter flow cytometry...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28532809/seroprevalence-of-bovine-herpesvirus-1-related-alphaherpesvirus-infections-in-free-living-and-captive-cervids-in-poland
#13
Jerzy Rola, Magdalena Larska, Wojciech Socha, Jolanta G Rola, Magdalena Materniak, Renata Urban-Chmiel, Etienne Thiry, Jan F Żmudziński
To determine the occurrence of bovine herpesvirus 1 (BoHV-1) related alphaherpesvirus infections in cervids, 1194 serum samples of wild ruminants originating from 59 forest districts of Poland were tested with IBR gB ELISA and virus neutralization test (VNT) against BoHV-1 and cervid herpesvirus 1 (CvHV-1). The seroprevalence differed significantly between free-living and captive cervids (P<0.001) with a total of 89 out of 498 (17.9%) and 268 out of 696 (38.5%) seropositive animals in each type of population...
May 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28531260/comparison-of-kaposi-sarcoma-risk-in-hiv-positive-adults-across-five-continents-a-multiregional-multicohort-study
#14
Julia Bohlius
Background: We compared Kaposi sarcoma (KS) risk in adults who initiated antiretroviral therapy (ART) across the Asia-Pacific, South Africa, Europe, Latin, and North America. Methods: We included cohort data of HIV-positive adults who initiated ART after 1995 within the framework of two large collaborations of observational HIV cohorts. We present incidence rates and adjusted hazard ratios (aHRs). Results: We included 208,140 patients from 57 countries...
May 20, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28528445/interindividual-spread-of-herpesviruses
#15
Keith W Jarosinski
Interindividual spread of herpesviruses is essential for the virus life cycle and maintenance in host populations. For most herpesviruses, the virus-host relationship is close, having coevolved over millions of years resulting in comparatively high species specificity. The mechanisms governing interindividual spread or horizontal transmission are very complex, involving conserved herpesviral and cellular proteins during the attachment, entry, replication, and egress processes of infection. Also likely, specific herpesviruses have evolved unique viral and cellular interactions during cospeciation that are dependent on their relationship...
2017: Advances in Anatomy, Embryology, and Cell Biology
https://www.readbyqxmd.com/read/28528443/herpesvirus-nuclear-egress
#16
Richard J Roller, Joel D Baines
Herpesviruses assemble and package their genomes into capsids in the nucleus, but complete final assembly of the mature virion in the cell cytoplasm. This requires passage of the genome-containing capsid across the double-membrane nuclear envelope. Herpesviruses have evolved a mechanism that relies on a pair of conserved viral gene products to shuttle the capsids from the nucleus to the cytoplasm by way of envelopment and de-envelopment at the inner and outer nuclear membranes, respectively. This complex process requires orchestration of the activities of viral and cellular factors to alter the architecture of the nuclear membrane, select capsids at the appropriate stage for egress, and accomplish efficient membrane budding and fusion events...
2017: Advances in Anatomy, Embryology, and Cell Biology
https://www.readbyqxmd.com/read/28528442/herpesvirus-capsid-assembly-and-dna-packaging
#17
Jason D Heming, James F Conway, Fred L Homa
Herpes simplex virus type I (HSV-1) is the causative agent of several pathologies ranging in severity from the common cold sore to life-threatening encephalitic infection. During productive lytic infection, over 80 viral proteins are expressed in a highly regulated manner, resulting in the replication of viral genomes and assembly of progeny virions. The virion of all herpesviruses consists of an external membrane envelope, a proteinaceous layer called the tegument, and an icosahedral capsid containing the double-stranded linear DNA genome...
2017: Advances in Anatomy, Embryology, and Cell Biology
https://www.readbyqxmd.com/read/28528441/herpesvirus-latency-on-the-importance-of-positioning-oneself
#18
Patrick Lomonte
The nucleus is composed of multiple compartments and domains, which directly or indirectly influence many cellular processes including gene expression, RNA splicing and maturation, protein post-translational modifications, and chromosome segregation. Nuclear-replicating viruses, especially herpesviruses, have co-evolved with the cell, adopting strategies to counteract and eventually hijack this hostile environment for their own benefit. This allows them to persist in the host for the entire life of an individual and to ensure their maintenance in the target species...
2017: Advances in Anatomy, Embryology, and Cell Biology
https://www.readbyqxmd.com/read/28528437/initial-contact-the-first-steps-in-herpesvirus-entry
#19
Walid Azab, Klaus Osterrieder
The entry process of herpesviruses into host cells is complex and highly variable. It involves a sequence of well-orchestrated events that begin with virus attachment to glycan-containing proteinaceous structures on the cell surface. This initial contact tethers virus particles to the cell surface and results in a cascade of molecular interactions, including the tight interaction of viral envelope glycoproteins to specific cell receptors. These interactions trigger intracellular signaling and finally virus penetration after fusion of the viral envelope with cellular membranes...
2017: Advances in Anatomy, Embryology, and Cell Biology
https://www.readbyqxmd.com/read/28516841/us3-and-us9-proteins-contribute-to-the-stromal-invasion-of-bovine-herpesvirus-1-in-the-respiratory-mucosa
#20
Jing Zhao, Katrien C K Poelaert, Lennert Steukers, Herman W Favoreel, Yewei Li, Shafiqul I Chowdhury, Sylvia van Drunen Littel-van den Hurk, Brigitte Caij, Hans J Nauwynck
Bovine herpesvirus 1 (BHV-1) infection may lead to conjunctivitis, upper respiratory tract problems, pneumonia, genital disorders and abortion. BHV-1 is able to spread quickly in a plaque-wise manner and invade by breaching the basement membrane (BM) barrier in the respiratory mucosa. BHV-1 Us3, a serine/threonine kinase, induces a dramatic cytoskeletal reorganization and BHV-1 Us9, a tail-anchored membrane protein, is required for axonal transport of viruses in neurons. In this study, we investigated the role of Us3 and Us9 during BHV-1 infection in the respiratory mucosa...
May 18, 2017: Journal of General Virology
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