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https://www.readbyqxmd.com/read/29156319/large-scale-analysis-of-herpesviridae-in-epilepsy-patients-with-signs-of-autoimmune-encephalitis
#1
Freya Poulheim, Laura Esposito, Christian E Elger, Anna M Eis-Hübinger, Albert J Becker, Pitt Niehusmann
PURPOSE: Epilepsy is one of the most common primary brain disorders. Nonparaneoplastic autoimmune encephalitis is increasingly recognized as an important cause of adult onset epilepsy. However, only in rare cases an initiating factor of the syndrome can be identified. Autoantibody detection after central nervous herpesvirus infection indicates a postviral etiology in a subgroup of patients. In order to analyze a possible underrecognition of postinfectious autoimmunity we performed a large-scale analysis of herpesvirus DNA in cerebrospinal fluid samples from patients with clinical signs of autoimmune encephalitis...
November 17, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29155997/immune-activation-and-benefit-from-avelumab-in-ebv-positive-gastric-cancer
#2
Anshuman Panda, Janice M Mehnert, Kim M Hirshfield, Greg Riedlinger, Sherri Damare, Tracie Saunders, Michael Kane, Levi Sokol, Mark N Stein, Elizabeth Poplin, Lorna Rodriguez-Rodriguez, Ann W Silk, Joseph Aisner, Nancy Chan, Jyoti Malhotra, Melissa Frankel, Howard L Kaufman, Siraj Ali, Jeffrey S Ross, Eileen P White, Gyan Bhanot, Shridar Ganesan
Response to immune checkpoint therapy can be associated with a high mutation burden, but other mechanisms are also likely to be important. We identified a patient with metastatic gastric cancer with meaningful clinical benefit from treatment with the anti-programmed death-ligand 1 (PD-L1) antibody avelumab. This tumor showed no evidence of high mutation burden or mismatch repair defect but was strongly positive for presence of Epstein-Barr virus (EBV) encoded RNA. Analysis of The Cancer Genome Atlas gastric cancer data (25 EBV+, 80 microsatellite-instable [MSI], 310 microsatellite-stable [MSS]) showed that EBV-positive tumors were MSS...
November 15, 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29155933/pd-l1-antibodies-for-ebv-positive-gastric-cancer-going-beyond-pd-l1-expression-and-microsatellite-instability
#3
Khaldoun Almhanna, Scott Antonia
No abstract text is available yet for this article.
November 15, 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29153526/economic-and-genetic-performance-of-various-combinations-of-in-vitro-produced-embryo-transfers-and-artificial-insemination-in-a-dairy-herd
#4
Karun Kaniyamattam, Jeremy Block, Peter J Hansen, Albert De Vries
The objective of this study was to find the optimal proportions of pregnancies from an in vitro-produced embryo transfer (IVP-ET) system and artificial insemination (AI) so that profitability is maximized over a range of prices for embryos and surplus dairy heifer calves. An existing stochastic, dynamic dairy model with genetic merits of 12 traits was adapted for scenarios where 0 to 100% of the eligible females in the herd were impregnated, in increments of 10%, using IVP-ET (ET0 to ET100, 11 scenarios). Oocytes were collected from the top donors selected for the trait lifetime net merit (NM$) and fertilized with sexed semen to produce IVP embryos...
November 15, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29153068/-atypical-profile-problem-in-serological-diagnosis-of-ebv
#5
Fatma Kamer Varıcı Balcı, Özgen Alpay Özbek, Ayça Arzu Sayıner
Epstein-Barr virus (EBV) is the causative agent of infectious mononucleosis. Burkitt's lymphoma, nasopharyngeal carcinoma and post-transplant lymphoproliferative diseases are also associated with EBV. Diagnosis is frequently based on detection of specific antibodies. Using three parameters (anti VCA-IgM, anti VCA-IgG and anti EBNA-1 IgG), it is possible to define infection status and diagnose acute or past infection. However, sometimes the detection of atypical serological profiles makes it difficult to interpret these results...
October 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/29152841/adjusting-for-heterogeneity-of-experimental-data-in-genetic-evaluation-of-dry-matter-intake-in-dairy-cattle
#6
M E Uddin, T Meuwissen, R F Veerkamp
The objectives of the present study were (i) to find the best fitted model for repeatedly measured daily dry matter intake (DMI) data obtained from different herds and experiments across lactations and (ii) to get better estimates of the genetic parameters and better genetic evaluations. After editing, there were 572,512 daily DMI records of 3,495 animals (Holstein cows) from 11 different herds across 13 lactations and the animals were under 110 different nutritional experiments. The fitted model for this data set was a univariate repeated-measure animal model (called model 1) in which additive genetic and permanent environmental (within and across lactations) effects were fitted as random...
November 20, 2017: Journal of Animal Breeding and Genetics, Zeitschrift Für Tierzüchtung und Züchtungsbiologie
https://www.readbyqxmd.com/read/29147610/host-immune-response-index-in-gastric-cancer-identified-by-comprehensive-analyses-of-tumor-immunity
#7
Charny Park, Junhun Cho, Jeeyun Lee, So Young Kang, Ji Yeong An, Min Gew Choi, Jun Ho Lee, Tae Sung Sohn, Jae Moon Bae, Sung Kim, Seung Tae Kim, Se Hoon Park, Joon Oh Park, Won Ki Kang, Insuk Sohn, Sin Ho Jung, Myung-Soo Kang, Kyoung-Mee Kim
Tumor infiltrating lymphocytes (TIL) in Epstein-Barr virus (EBV)-associated/microsatellite-unstable (MSI) gastric carcinomas (GC) constitute immune-active principal cellular components of tumor microenvironment and contribute to better prognosis. With the remarkable success of cancer immunotherapies, there is an urgent need for a comprehensive understanding of tumor-immune interactions in patients with GC in the context of host immune response. To identify GC subtype-specific immune response gene set, we tested differentially expressed genes for MSI and EBV+ GC subtypes in randomly selected test set (n = 278) in merged ACRG-SMC microarray and TCGA RNA sequencing data set...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29145505/spontaneous-development-of-epstein-barr-virus-associated-human-lymphomas-in-a-prostate-cancer-xenograft-program
#8
Alberto J Taurozzi, Ramprakash Beekharry, Michelle Wantoch, Marie-Christine Labarthe, Hannah F Walker, Robert I Seed, Matthew Simms, Greta Rodrigues, James Bradford, Geertje van der Horst, Gabri van der Pluijm, Anne T Collins
Prostate cancer research is hampered by the lack of in vivo preclinical models that accurately reflect patient tumour biology and the clinical heterogeneity of human prostate cancer. To overcome these limitations we propagated and characterised a new collection of patient-derived prostate cancer xenografts. Tumour fragments from 147 unsupervised, surgical prostate samples were implanted subcutaneously into immunodeficient Rag2-/-γC-/- mice within 24 hours of surgery. Histologic and molecular characterisation of xenografts was compared with patient characteristics, including androgen-deprivation therapy, and exome sequencing...
2017: PloS One
https://www.readbyqxmd.com/read/29144413/epstein-barr-virus-hijacks-dna-damage-response-transducers-to-orchestrate-its-life-cycle
#9
REVIEW
Pok Man Hau, Sai Wah Tsao
The Epstein-Barr virus (EBV) is a ubiquitous virus that infects most of the human population. EBV infection is associated with multiple human cancers, including Burkitt's lymphoma, Hodgkin's lymphoma, a subset of gastric carcinomas, and almost all undifferentiated non-keratinizing nasopharyngeal carcinoma. Intensive research has shown that EBV triggers a DNA damage response (DDR) during primary infection and lytic reactivation. The EBV-encoded viral proteins have been implicated in deregulating the DDR signaling pathways...
November 16, 2017: Viruses
https://www.readbyqxmd.com/read/29143712/accuracy-and-bias-of-genomic-prediction-with-different-de-regression-methods
#10
H Song, L Li, Q Zhang, S Zhang, X Ding
Genomic selection has become increasingly important in the breeding of animals and plants. The response variable is an important factor, influencing the accuracy of genomic selection. The de-regressed proof (DRP) based on traditional estimated breeding value (EBV) is commonly used as response variable. In the current study, simulated data from 16th QTL-MAS Workshop and real data from Chinese Holstein cattle were used to compare accuracy and bias of genomic prediction with two methods of calculating DRP. Our results with simulated data showed that the correlation between genomic EBV and true breeding value achieved using the Jairath method (DRP_J) was superior to that achieved using the Garrick method (DRP_G) for simulated trait 1 but the reverse was true for simulated trait 3, and these two methods performed comparably for simulated trait 2...
November 16, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29142476/clinical-and-pathological-characterization-of-epstein-barr-virus-associated-gastric-carcinomas-in-portugal
#11
Joana Ribeiro, Andreia Oliveira, Mariana Malta, Claudia Oliveira, Fernanda Silva, Ana Galaghar, Luís Pedro Afonso, Maria Cassiano Neves, Rui Medeiros, Pedro Pimentel-Nunes, Hugo Sousa
AIM: To determine the prevalence of Epstein-Barr virus (EBV)-associated gastric carcinomas in the North Region of Portugal and to study its clinicopathological characteristics. METHODS: We have performed a retrospective study including a total of 179 consecutive patients with gastric cancer (GC) submitted to gastrectomy during 2011 at the Portuguese Oncology Institute of Porto. Clinical and pathological data was collected from individual clinical records and inserted on a database with unique codification...
October 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29142137/the-epstein-barr-virus-episome-maneuvers-between-nuclear-chromatin-compartments-during-reactivation
#12
Stephanie A Moquin, Sean Thomas, Sean Whalen, Alix Warburton, Samantha G Fernandez, Alison A McBride, Katherine S Pollard, J J L Miranda
The human genome is structurally organized in three-dimensional space to facilitate functional partitioning of transcription. We learned that the latent episome of the human Epstein-Barr virus (EBV) preferentially associates with gene-poor chromosomes and avoids gene-rich chromosomes. Kaposi's sarcoma-associated herpesvirus behaves similarly, but human papillomavirus does not. Contacts localize on the EBV side to OriP, the latent origin of replication. This genetic element, and the EBNA1 protein that binds there, are sufficient to reconstitute chromosome association preferences of the entire episome...
November 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29142127/epstein-barr-virus-protein-eb2-stimulates-translation-initiation-of-mrnas-through-direct-interactions-with-both-pabp-and-eif4g
#13
Fabrice Mure, Baptiste Panthu, Isabelle Zanella-Cléon, Frédéric Delolme, Evelyne Manet, Théophile Ohlmann, Henri Gruffat
Epstein-Barr virus (EBV) expresses several mRNAs produced from intronless genes that could potentially be unfavorably translated compared to cellular spliced mRNAs. To overcome this situation, the virus encodes an RNA-binding protein (RBP) called EB2, previously found to both facilitate the export of nuclear mRNAs and increase their translational yield. Here, we show that EB2 binds both nuclear and cytoplasmic cap-binding complexes (respectively, CBC and eIF4F) as well as the poly(A)-binding protein (PABP) to enhance translation initiation of a given mRNP...
November 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29137273/programmed-death-ligand-1-and-met-co-expression-is-a-poor-prognostic-factor-in-gastric-cancers-after-resection
#14
Mi Jung Kwon, Kab-Choong Kim, Eun Sook Nam, Seong Jin Cho, Hye-Rim Park, Soo Kee Min, Jinwon Seo, Ji-Young Choe, Hye Kyung Lee, Ho Suk Kang, Kyueng-Whan Min
Programmed death-ligand 1 (PD-L1) plays an essential protein for immune evasion, contributing to tumor development and progression. Recent studies have reported MET as an upregulator for PD-L1 overexpression through an oncogenic pathway. However, an association between PD-L1 expression with MET has not been reported in gastric cancer.The prognostic significance of PD-L1 and its association with Epstein-Barr virus (EBV), microsatellite instability (MSI), and mucin phenotype remain controversial. We performed in situ hybridization for EBV-encoded RNA and immunohistochemistry in tissue microarrays for 394 gastric cancers...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137176/ebv-and-apoptosis-the-viral-master-regulator-of-cell-fate
#15
REVIEW
Leah Fitzsimmons, Gemma L Kelly
Epstein-Barr virus (EBV) was first discovered in cells from a patient with Burkitt lymphoma (BL), and is now known to be a contributory factor in 1-2% of all cancers, for which there are as yet, no EBV-targeted therapies available. Like other herpesviruses, EBV adopts a persistent latent infection in vivo and only rarely reactivates into replicative lytic cycle. Although latency is associated with restricted patterns of gene expression, genes are never expressed in isolation; always in groups. Here, we discuss (1) the ways in which the latent genes of EBV are known to modulate cell death, (2) how these mechanisms relate to growth transformation and lymphomagenesis, and (3) how EBV genes cooperate to coordinately regulate key cell death pathways in BL and lymphoblastoid cell lines (LCLs)...
November 13, 2017: Viruses
https://www.readbyqxmd.com/read/29136714/-the-prognostic-significance-of-plasma-epstein-barr-virus-dna-in-patients-with-diffuse-large-b-cell-lymphoma
#16
N An, Y P Xie, Y Xu, P F Shi, S X Qian
To retrospectively analyze the prognostic significance of plasma Epstein-Barr virus (EBV) DNA in 122 patients with diffuse large B cell lymphoma (DLBCL). Plasma EBV DNA positivity was related to advanced disease stage (P=0.030), B symptoms (P=0.004) and elevated serum lactic dehydrogenase (LDH) (P=0.001). Furthermore, univariate analysis indicated that plasma EBV DNA level was associated with worse overall survival (OS) (HR=0.223, 95%CI 0.096-0.518, P<0.001) and worse progression free survival (PFS) (HR=4...
November 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/29136621/evaluation-of-nickel-release-from-endobronchial-valves-as-a-possible-cause-of-hypersensitivity-pneumonitis-in-a-patient-treated-with-bronchoscopic-lung-volume-reduction
#17
Daniel P Franzen, Claudia Lang, Nikos Agorastos, Lutz Freitag, Malcolm Kohler, Peter Schmid-Grendelmeier
BACKGROUND: Endobronchial valve (EBV) placement is an established lung volume reduction procedure aiming to improve lung function and exercise capacity in patients with severe emphysema. As EBVs consist of silicone and nitinol (a metal alloy of nickel and titanium), there are concerns that nickel ions might be released and could have a clinical impact in patients with a contact allergy to nickel. Based on a case with hypersensitivity pneumonitis (HP) after treatment with EBVs, we aimed to evaluate the in vitro nickel release from EBVs using inductively coupled plasma mass spectrometry (ICP-MS) and scanning electron microscopy (SEM)...
November 15, 2017: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/29136066/unsuspected-lymphomatoid-granulomatosis-in-a-patient-with-antisynthetase-syndrome
#18
Stephanie L Skala, Alexandra C Hristov, Johann E Gudjonsson, May P Chan
Clinical diagnosis of lymphomatoid granulomatosis (LYG) often is difficult, especially in patients with multiple comorbidities. We present a 60-year-old woman with worsening fatigue, night sweats, unintentional weight loss, and dyspnea of 2 weeks' duration. Her medical history was remarkable for recent radiation therapy for recurrent breast cancer and antisynthetase syndrome complicated by interstitial lung disease and controlled with azathioprine. Computed tomography showed ground-glass opacities and nodular infiltrates in all lung lobes, raising concern for radiation pneumonitis and drug toxicity...
October 2017: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/29134204/latent-membrane-protein-1-is-a-novel-determinant-of-epstein-barr-virus-genome-persistence-and-reactivation
#19
Elizabeth A Caves, Rachel M Butch, Sarah A Cook, Laura R Wasil, Chen Chen, Yuanpu Peter Di, Nara Lee, Kathy H Y Shair
Epstein-Barr virus (EBV) is a ubiquitous gammaherpesvirus that persistently infects humans, with nearly 95% seropositivity in adults. Infection in differentiating epithelia is permissive, but EBV-associated nasopharyngeal carcinoma (NPC) tumors harbor a clonal and nonproductive latent infection. However, in explanted NPC cultures and epithelial cell lines, episomal EBV genomes are frequently lost. The resulting unstable infection has hampered efforts to study the determinants of EBV persistence and latency in epithelial oncogenesis...
November 2017: MSphere
https://www.readbyqxmd.com/read/29132393/interferon-%C3%AE-inducible-protein-16-ifi16-is-required-for-the-maintenance-of-epstein-barr-virus-latency
#20
Gina Pisano, Arunava Roy, Mairaj Ahmed Ansari, Binod Kumar, Leela Chikoti, Bala Chandran
BACKGROUND: Epstein-Barr virus (EBV) exhibits both lytic and latent (Lat. I, II, and III) phases in an infected individual. It's during the latent phase of EBV that all EBV-associated cancers, including Burkitt's lymphoma, nasopharyngeal carcinoma and lymphoproliferative disease arise. Interferon-γ-inducible protein 16 (IFI16) is a well-established innate immune sensor and viral transcriptional regulator involved in response to invading DNA viruses. During latency, IFI16 remains in the nucleus, in part bound to the EBV genome; however, neither its role in EBV lytic cycle or latency has been established...
November 13, 2017: Virology Journal
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