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Marek's disease virus

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https://www.readbyqxmd.com/read/29317752/epstein-barr-virus-encoded-rnas-ebers-complement-the-loss-of-herpesvirus-telomerase-rna-vtr-in-virus-induced-tumor-formation
#1
Ahmed Kheimar, Benedikt B Kaufer
Marek's disease virus (MDV) is an alphaherpesvirus that causes fatal lymphomas in chickens and is used as a natural virus-host model for herpesvirus-induced tumorigenesis. MDV encodes a telomerase RNA subunit (vTR) that is crucial for efficient MDV-induced lymphoma formation; however, the mechanism is not completely understood. Similarly, Epstein Barr-virus (EBV) encodes two RNAs (EBER-1 and EBER-2) that are highly expressed in EBV-induced tumor cells, however their role in tumorigenesis remains unclear. Intriguingly, vTR and EBER-1 have interaction partners in common that are highly conserved in humans and chickens...
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29287680/monitoring-the-uptake-of-live-avian-vaccines-by-their-detection-in-feathers
#2
Irit Davidson, Amira Natour-Altory, Israel Raibstein, Eitan Kin, Yaad Dahan, Haim Krispin, Nati Elkin
Protection against diseases caused by the avian viruses, Marek's disease, Infectious laryngotracheitis, chicken anemia and turkey meningoencephalitis is achieved by live vaccines. The application quality is important to assure proper uptake in commercial flocks. We describe a novel evaluation method for the vaccination process by sequential monitoring the vaccine viruses in feathers. Feather collection is easy, non-invasive and non-lethal for the birds, therefore advantageous for monitoring purposes. To demonstrate the vaccine virus presence, an innovative assay of nested real-time amplification was approached because vaccine viruses presence in vivo is less abundant comparing to virulent wild-type isolates...
December 26, 2017: Vaccine
https://www.readbyqxmd.com/read/29178242/deceased-organ-donor-screening-for-human-immunodeficiency-virus-hepatitis-b-and-hepatitis-c-viruses-discordant-serology-and-nucleic-acid-testing-results
#3
Nicole Theodoropoulos, Marek J Nowicki, Claudia Chinchilla-Reyes, Sara Dionne, Andrés Jaramillo, Tom Mone, Richard Hasz, Martin D Jendrisak, Daniela P Ladner, Michael G Ison
BACKGROUND: Before the 2014 policy change pertaining to infectious disease screening, many organ procurement organizations (OPOs) were supplementing serologic screening of deceased organ donors with nucleic acid testing (NAT) for human immunodeficiency virus (HIV-1), hepatitis B virus (HBV), and hepatitis C virus (HCV). The number of seronegative, NAT-positive donors has not been directly measured. METHODS: HIV, HBV, and HCV screening results of 11 229 donor referrals evaluated from 2010 to 2013 were obtained from three OPO-affiliated laboratories, capturing 35% of all donors in the United States...
November 27, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29167337/differential-immunodominance-hierarchy-of-cd8-t-cell-responses-in-hla-b-27-05-and-b-27-02-mediated-control-of-hiv-1-infection
#4
Emily Adland, Matilda Hill, Nora Lavandier, Anna Csala, Anne Edwards, Fabian Chen, Marek Radkowski, Justyna D Kowalska, Dimitrios Paraskevis, Angelos Hatzakis, Humberto Valenzuela-Ponce, Katja Pfafferott, Ian Williams, Pierre Pellegrino, Persephone Borrow, Masahiko Mori, Jürgen Rockstroh, Julia G Prado, Beatriz Mothe, Judith Dalmau, Javier Martinez-Picado, Gareth Tudor-Williams, John Frater, Anette Stryhn, Soren Buus, Gustavo Reyes Teran, Simon Mallal, Mina John, Susan Buchbinder, Gregory Kirk, Jeffrey Martin, Nelson Michael, Jacques Fellay, Steve Deeks, Bruce Walker, Santiago Avila-Rios, David Cole, Christian Brander, Mary Carrington, Philip Goulder
The well-characterised association between HLA-B*27:05 and protection against HIV disease progression has been linked to immunodominant HLA-B*27:05-restricted CD8+ T-cell responses towards the conserved Gag 263-272 ('KK10') and Pol 901-909 'KY9' epitopes. We here studied the impact of the 3 amino acid differences between HLA-B*27:05 and the closely-related HLA-B*27:02 on the HIV-specific CD8+ T-cell response hierarchy and on immune control of HIV. Genetic epidemiological data indicate that both HLA-B*27:02 and HLA-B*27:05 associate with slower disease progression and lower viral loads...
November 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29151863/a-phylogenomic-analysis-of-marek-s-disease-virus-reveals-independent-paths-to-virulence-in-eurasia-and-north-america
#5
Jakob Trimpert, Nicole Groenke, Maria Jenckel, Shulin He, Dusan Kunec, Moriah L Szpara, Stephen J Spatz, Nikolaus Osterrieder, Dino P McMahon
Virulence determines the impact a pathogen has on the fitness of its host, yet current understanding of the evolutionary origins and causes of virulence of many pathogens is surprisingly incomplete. Here, we explore the evolution of Marek's disease virus (MDV), a herpesvirus commonly afflicting chickens and rarely other avian species. The history of MDV in the 20th century represents an important case study in the evolution of virulence. The severity of MDV infection in chickens has been rising steadily since the adoption of intensive farming techniques and vaccination programs in the 1950s and 1970s, respectively...
December 2017: Evolutionary Applications
https://www.readbyqxmd.com/read/29091922/characterization-of-the-deubiquitination-activity-and-substrate-specificity-of-the-chicken-ubiquitin-specific-protease-1-usp-associated-factor-1-complex
#6
Hainan Zheng, Mengyun Wang, Chengcheng Zhao, Shanli Wu, Peifeng Yu, Yan Lü, Tiedong Wang, Yongxing Ai
Deubiquitinases (DUBs) are essential regulators of intracellular processes involving ubiquitin (Ub) modification. The human DUB ubiquitin-specific protease 1 (hUSP1) interacts with human USP-associated factor 1 (hUAF1), and helps to regulate processes such as DNA damage repair. Previously, we identified a chicken USP1 homologue (chUSP1) during an investigation into the properties of Marek's disease virus (MDV). However, chUSP1's deubiquitination activity, interaction with chUAF1, and substrate specificity remained unknown...
2017: PloS One
https://www.readbyqxmd.com/read/29077674/macrophage-activation-and-the-tumor-necrosis-factor-cascade-in-hepatitis-c-disease-progression-among-hiv-infected-women-participating-in-the-women-s-interagency-hiv-study
#7
Audrey L French, Jonathan W Martin, Charlesnika T Evans, Marion Peters, Seble G Kessaye, Marek Nowicki, Mark Kuniholm, Elizabeth Golub, Michael Augenbraun, Seema N Desai
BACKGROUND: HIV/hepatitis C-coinfected persons experience more rapid liver disease progression than hepatitis C virus (HCV) monoinfected persons, even in the setting of potent antiretroviral therapy. METHODS: We sought to articulate the role of macrophage activation and inflammation in liver disease progression by measuring serial soluble markers in HIV/HCV-coinfected women. We compared markers measured during retrospectively defined periods of rapid liver disease progression to periods where little or no liver disease progression occurred...
December 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29061957/negative-correlation-between-hepatitis-c-virus-hcv-and-let-7-microrna-family-in-transplanted-livers-the-role-of-rs868-single-nucleotide-polymorphism
#8
Emir Ahmed Sajjad, Marek Radkowski, Agnieszka Perkowska-Ptasińska, Marek Pacholczyk, Magdalena Durlik, Mikołaj Fedorowicz, Renata Pietrzak, Bogna Ziarkiewicz-Wróblewska, Paweł Włodarski, Jacek Malejczyk
BACKGROUND Genetic alterations of TGF-β pathway members, including its transmembrane receptor, TGFBR1, may influence the course of HCV infection. Rs868 is a single-nucleotide polymorphism of the 3'UTR region of TGFBR1, located in a binding site for the conserved let-7/miR98 microRNA family. Previously, we demonstrated a favorable course of hepatitis C recurrence after liver transplantation in rs868 AG genotype of the transplanted liver when compared to rs868 AA. The aim of the present study was to confirm the biological effect of rs868...
October 24, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/29054826/viral-infections-in-common-carp-lead-to-a-disturbance-of-mucin-expression-in-mucosal-tissues
#9
Mikolaj Adamek, Dennis Hazerli, Marek Matras, Felix Teitge, Michal Reichert, Dieter Steinhagen
In response to the constant challenge by potential pathogens, external surfaces of fish, their skin, gills and intestinal tract, are coated with mucus, a gel like substance which largely prevents the entry of pathogens. This mucus gel consists mainly of water and mucins, large O-glycosylated proteins, which are responsible for forming a gel like mixture. A modulation of the mRNA expression of mucins, was described in viral diseases in mammals however there is a knowledge gap about the regulation of mucins during viral infection in fish...
October 17, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29050325/toll-like-receptor-3-pathway-restricts-marek-s-disease-virus-infection
#10
Haitao Zou, Ruixue Su, Jing Ruan, Hongxia Shao, Kun Qian, Jianqiang Ye, Aijian Qin
Marek's disease virus (MDV) is an α-herpesvirus that causes immune suppression and T lymphoma in chickens. Toll-like receptor 3 (TLR3) is critical for the host immune response against MDV infection. Previously, our team demonstrated that pre-treatment of TLR3 agonist poly (I:C) inhibited Marek's disease virus infection in chicken embryo fibroblasts (CEFs). However, whether TLR3 inhibits the aggravation of MDV infection is unknown. In the current study, we found that TLR3 activation in MDV-infected CEFs effectively inhibited virus spread...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29021518/the-lethal-spanish-influenza-pandemic-in-poland
#11
Marek L Grabowski, Bożena Kosińska, Józef P Knap, Lidia B Brydak
The Spanish influenza pandemic in the years 1918-1920 was the largest and most tragic pandemic of infectious disease in human history. Deciphering the structure of the virus (including the determination of complete genome sequence) of this pandemic and the phylogenetic analysis and explanation of its virulence became possible thanks to molecular genetic analysis of the virus isolated from the fixed and frozen lung tissue of influenza victims who died in 1918 and were buried frozen in Alaska and Spitsbergen...
October 12, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29018431/depression-of-vaccinal-immunity-to-marek-s-disease-by-infection-with-chicken-infectious-anemia-virus
#12
Yankun Zhang, Ning Cui, Ni Han, Jiayan Wu, Zhizhong Cui, Shuai Su
Marek's disease (MD) has been occurring with increasing frequency in chickens in recent years. To our knowledge, however, there has been no report of the very virulent plus (vv+) MD virus (MDV) field isolate in China. Studies have shown that dual infection with immunosuppressive viruses such as chicken infectious anemia virus (CIAV) occurs frequently in chickens developing MD. In this study, we performed a designed set of in vivo experiments, which comprised five different groups of chickens, including the group of CVI988/Rispens-vaccinated chickens, the groups of CVI988/Rispens-vaccinated chickens infected with MDV or CIAV or both viruses (MDV and CIAV), and the group of MDV-challenged chickens...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28978699/induction-of-dna-damages-upon-marek-s-disease-virus-infection-implication-in-viral-replication-and-pathogenesis
#13
Djihad Bencherit, Sylvie Remy, Yves Le Vern, Tereza Vychodil, Luca D Bertzbach, Benedikt B Kaufer, Caroline Denesvre, Laëtitia Trapp-Fragnet
Marek's disease virus (MDV) is a highly contagious alphaherpesvirus that infects chickens and causes a deadly neoplastic disease. We previously demonstrated that MDV infection arrests cells in S-phase and that the tegument protein VP22 plays a major role in this process. In addition, expression of VP22 induces double strand breaks (DSB) in the cellular DNA, suggesting that DNA damage and the associated cellular response might be favorable for the MDV lifecycle. Here, we addressed the role of DNA damage in MDV replication and pathogenesis...
October 4, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28954472/comparative-molecular-analysis-of-strains-of-the-aleutian-disease-virus-isolated-from-farmed-and-wild-mink
#14
Andrzej Jakubczak, Marek Kowalczyk, Krzysztof Kostro, Grazyna Jezewska-Witkowska
INTRODUCTION AND OBJECTIVE: Aleutian Disease is a significant biological factor causing substantial losses in mink farming. The virus inducing the disease also infects wild populations which may constitute an asymptomatic reservoir. To compare genetic variants of the AMD virus occurring in wild and farmed mink populations, an analysis was performed on a fragment of the VP2 protein sequence of the virus infecting both populations, taken from different living environments. MATERIAL AND METHODS: Genetic material was isolated from 11 farmed animals in which anti-AMDV antibodies had been detected and from 20 wild animals...
September 21, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28930088/comparison-of-pcr-methods-for-the-detection-of-genetic-variants-of-carp-edema-virus
#15
Mikolaj Adamek, Marek Matras, Verena Jung-Schroers, Felix Teitge, Max Heling, Sven M Bergmann, Michal Reichert, Keith Way, David M Stone, Dieter Steinhagen
The infection of common carp and its ornamental variety, koi, with the carp edema virus (CEV) is often associated with the occurrence of a clinical disease called 'koi sleepy disease'. The disease may lead to high mortality in both koi and common carp populations. To prevent further spread of the infection and the disease, a reliable detection method for this virus is required. However, the high genetic variability of the CEV p4a gene used for PCR-based diagnostics could be a serious obstacle for successful and reliable detection of virus infection in field samples...
September 20, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28910208/immunohistochemical-and-immunocytochemical-findings-associated-with-marek-s-disease-virus-in-naturally-infected-laying-hens
#16
O Yavuz, H Erer
We compared immunohistochemical (IHC) staining of tissue sections of liver, kidney, spleen, lung, proventriculus, sciatic nerve, bursa of Fabricius, brain, heart, intestine and skin; immunocytochemical (ICC) staining of peripheral blood samples and touch preparations of liver, spleen and kidney of laying hens naturally infected with Marek's disease (MD) virus. We used one hundred and fifty 5-17-week-old commercial hens. IHC and ICC staining were performed using polymer-based techniques. IHC staining exhibited mostly free immunopositive reactions in tumor cells and in the cytoplasm of the parenchymal cells of liver, kidney, spleen and bursa of Fabricius...
September 14, 2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/28860661/long-intergenic-non-coding-rna-galmd3-in-chicken-marek-s-disease
#17
Bo Han, Yanghua He, Li Zhang, Yi Ding, Ling Lian, Chunfang Zhao, Jiuzhou Song, Ning Yang
Long intergenic non-coding RNAs (lincRNAs) are transcribed from non-coding DNA sequences. Studies have revealed that aberrant expressions of lincRNAs are associated with various types of cancers and neurological disorders. Marek's disease (MD) is a highly contagious T-cell lymphoid neoplasia of chicken induced by Marek's disease virus (MDV). In this study, we first identified and validated linc-GALMD3 highly expressed in MDV-infected CD4+ T cells by RNA-Seq and qRT-PCR. By RNA-Seq analysis in MDCC-MSB1 cells after loss of function of linc-GALMD3 by shRNA, we found that linc-GALMD3 could positively cis-regulate its downstream gga-miR-223 gene expression...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28859493/characterizing-the-histopathology-of-natural-co-infection-with-marek-s-disease-virus-and-subgroup-j-avian-leukosis-virus-in-egg-laying-hens
#18
Yawen Wen, Qi Huang, Chengcheng Yang, Ling Pan, Guijun Wang, Kezong Qi, Hongmei Liu
Marek's disease virus (MDV) and avian leukosis virus (ALV) are known to cause tumours in egg-laying hens. Here, we investigated the aetiology of tumours in a flock of egg-laying hens vaccinated against MDV. We carried out gross pathology and histopathological examinations of the diseased tissues, identified virus antigen and sequenced viral oncogenes to elucidate the cause of death in 21-22-wk-old hens. At necropsy, diseased hens had distinctly swollen livers, spleens, and proventriculus, and white tumour nodules in the liver...
September 1, 2017: Avian Pathology: Journal of the W.V.P.A
https://www.readbyqxmd.com/read/28819105/a-novel-method-for-genome-wide-profiling-of-dynamic-host-pathogen-interactions-using-3-end-enriched-rna-seq
#19
Jie Li, Liangliang He, Yun Zhang, Chunyi Xue, Yongchang Cao
Marek's disease is a contagious lymphoproliferative disease of chickens and typical model of viral oncogenesis. Mapping changes or different states over the course of infection for both host and pathogen would provide important insights into dynamic host-pathogen interactions. Here we introduced 3' end enriched RNA-seq as a novel method to study host-pathogen interactions in chicken embryo fibroblasts cells challenged with Marek's disease virus. The method allowed accurate profiling of gene expression and alternative polyadenylation sites for host and pathogen simultaneously...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28812393/innate-lymphoid-cells-the-role-in-respiratory-infections-and-lung-tissue-damage
#20
Anna Głobińska, Marek L Kowalski
Innate lymphoid cells (ILCs) represent a diverse family of cells of the innate immune system, which play an important role in regulation of tissue homeostasis, immunity and inflammation. Emerging evidence has highlighted the importance of ILCs in both protective immunity to respiratory infections and their pathological roles in the lungs. Therefore, the aim of this review is to summarize the current knowledge, interpret and integrate it into broader perspective, enabling greater insight into the role of ILCs in respiratory diseases...
October 2017: Expert Review of Clinical Immunology
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