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Lymphoma, EBV

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https://www.readbyqxmd.com/read/28937369/study-of-association-of-epstein-barr-virus-in-lymphomas-by-epstein-barr-virus-encoded-rna-in-situ-hybridization-an-indian-perspective-from-a-tertiary-care-cancer-institute
#1
Roshani Gala, Jatin S Gandhi, Gurudutt Gupta, Shrruti K Grover, Anila Sharma, Sunil Pasricha, Anurag Mehta
BACKGROUND: The Epstein-Barr virus (EBV), also called human herpesvirus 4, is a virus of the herpes family. The EBV-associated lymphomas include Burkitt lymphoma, classic Hodgkin lymphoma (HL), lymphomas arising in immunocompromised individuals, peripheral T-cell lymphomas, angioimmunoblastic T-cell lymphoma, extranodal nasal-type natural killer/T-cell lymphoma, and other rare histotypes. OBJECTIVE: The present study evaluated the role of EBV as an etiologic agent in various lymphomas and determined an Indian perspective in a tertiary care cancer center compared to that of Western literature...
July 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28932365/causal-role-of-infectious-agents-in-cancer-an-overview
#2
REVIEW
Jila Masrour-Roudsari, Soheil Ebrahimpour
Cancer is a complex group of diseases with multiple eventual causes. The underlying causes are not fully known. Thus, learning more about the known causes of cancer is an important issue. Moreover, among these factors, infection and its association to cancers is controversial. Although, it seems that the genome instability of the cells can initiate cancer development. The purpose of this review was to present the role of infection in the development of cancer. Infectious agents, such as hepatitis B (HBV) and C viruses (HCV), Epstein-Barr virus (EBV), human papillomavirus (HPV), human immunodeficiency virus type 1 (HIV-1), Helicobacter pylori (H...
2017: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/28924126/development-of-epstein-barr-virus-related-primary-diffuse-large-b-cell-lymphoma-of-the-central-nervous-system-in-a-patient-with-peripheral-t-cell-lymphoma-not-otherwise-specified-after-mogamulizumab-treatment
#3
Hiroaki Tanaka, Hanako Aoki, Yasumasa Sugita, Ryo Shimizu, Katsunari Kiko, Hidetoshi Mochida, Yoshio Suzuki
Mogamulizumab is a defucosylated humanized anti-CC chemokine receptor type 4 (CCR4) antibody that exerts an anti-tumor immune effect against various tumors through a suppressive effect on regulatory T-cells. We herein report a patient with peripheral T-cell lymphoma who developed Epstein-Barr virus (EBV)-related primary diffuse large B-cell lymphoma of the central nervous system (CNS DLBCL) after mogamulizumab therapy. Our experience should alert physicians to the possibility of the development of EBV-related CNS DLBCL in patients treated for primary lymphoma and suggests that the anti-tumor immune effect of mogamulizumab is ineffective for the prophylaxis of EBV-related lymphomas...
September 15, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28910751/chromatin-reorganisation-in-epstein-barr-virus-infected-cells-and-its-role-in-cancer-development
#4
REVIEW
Michelle J West
The oncogenic Epstein-Barr virus (EBV) growth transforms B cells and drives lymphoma and carcinoma development. The virus encodes four key transcription factors (EBNA2, EBNA3A, EBNA3B and EBNA3C) that hijack host cell factors to bind gene control elements and reprogramme infected B cells. These viral factors predominantly target long-range enhancers to alter the expression of host cell genes that control B cell growth and survival and facilitate virus persistence. Enhancer and super-enhancer binding by these EBNAs results in large-scale reorganisation of three-dimensional enhancer-promoter architecture to drive the overexpression of oncogenes, the silencing of tumour suppressors and the modulation of transcription, cell-cycle progression, migration and adhesion...
September 11, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28904201/heterogeneity-of-the-epstein-barr-virus-major-internal-repeat-reveals-evolutionary-mechanisms-of-ebv-and-a-functional-defect-in-the-prototype-ebv-strain-b95-8
#5
Mohammed Ba Abdullah, Richard Palermo, Anne Palser, Nicholas E Grayson, Paul Kellam, Samantha Correia, Agnieszka Szymula, Rob White
Epstein-Barr virus (EBV) is a ubiquitous pathogen of humans that can cause several types of lymphoma and carcinoma. Like other herpesviruses, EBV has diversified both through co-evolution with its host, and genetic exchange between virus strains. Sequence analysis of the EBV genome is unusually challenging, because of the large number and length of repeat regions within the virus. Here we describe the sequence assembly and analysis of the large internal repeat of EBV (IR1 or BamW repeats) from over 70 strains...
September 13, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28893938/epstein-barr-virus-associated-lymphomas
#6
REVIEW
Claire Shannon-Lowe, Alan B Rickinson, Andrew I Bell
Epstein-Barr virus (EBV), originally discovered through its association with Burkitt lymphoma, is now aetiologically linked to a remarkably wide range of lymphoproliferative lesions and malignant lymphomas of B-, T- and NK-cell origin. Some occur as rare accidents of virus persistence in the B lymphoid system, while others arise as a result of viral entry into unnatural target cells. The early finding that EBV is a potent B-cell growth transforming agent hinted at a simple oncogenic mechanism by which this virus could promote lymphomagenesis...
October 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28892735/expression-of-the-chemokine-receptors-ccr1-and-ccr2b-is-up-regulated-in-peripheral-blood-b-cells-upon-ebv-infection-and-in-established-lymphoblastoid-cell-lines
#7
Irina Kholodnyuk, Zanna Rudevica, Ainars Leonciks, Barbro Ehlin-Henriksson, Elena Kashuba
In immunocompetent individuals, EBV establishes in B cells an asymptomatic lifelong latent infection controlled by the immune system. Chemokine receptors regulate immune system function. CCR1 and CCR2 share protein sequence similarity and exert responses to multiple chemokines. The role of these receptors in B cells is largely unknown. We show that the mRNA and functional protein expression of CCR1 and CCR2 is induced in ex vivo B cells upon EBV infection and in established lymphoblastoid cell lines (LCLs)...
September 8, 2017: Virology
https://www.readbyqxmd.com/read/28883511/cytotoxic-response-against-epstein-barr-virus-coexists-with-diffuse-large-b-cell-lymphoma-tolerogenic-microenvironment-clinical-features-and-survival-impact
#8
Melina Cohen, Aldana G Vistarop, Fuad Huaman, Marina Narbaitz, Fernanda Metrebian, Elena De Matteo, María V Preciado, Paola A Chabay
Epstein-Barr Virus (EBV) is present in neoplastic cells of 15% of Asian and Latin-American diffuse large B-cell lymphoma (DLBCL) patients. Even though a tolerogenic microenvironment was recently described in DLBCL, little is known concerning immunomodulatory features induced by EBV. As suggested in Hodgkin lymphoma, EBV-specific cytotoxic T-cells are increased but showing immune exhaustion features. Hence, host immunity suppression may play a critical role in tumor progression. This study aimed to investigate, whether an association between tumor microenvironment features and EBV presence is taking place, and its clinical correlate...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28878909/a-rare-case-of-epstein-barr-virus-related-plasmacytoma-involving-maxillary-sinus-mucosa
#9
Julie D Gibbs, Marino E Leon, Kenia Liu, Johnny Nguyen, Ling Zhang
Extramedullary plasmacytomas, Epstein-Bar virus (EBV) associated, are rarely encountered and usually have a fairly good clinical outcome. EBV+ plasmacytoma may cause a diagnostic dilemma as it phenotypically resembles an aggressive plasmablastic lymphoma (PBL). Herein, we report a unique case with maxillary EBV+ plasmacytoma from a 76-year-old immunocompetent individual.
September 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28877678/extranodal-natural-killer-t-cell-lymphoma-in-malawi-a-report-of-three-cases
#10
Tamiwe Tomoka, Eric Powers, Toon van der Gronde, Amy Amuquandoh, Bal Mukunda Dhungel, Coxcilly Kampani, Steve Kamiza, Nathan D Montgomery, Yuri Fedoriw, Satish Gopal
BACKGROUND: Extranodal NK/T-cell lymphoma (ENKTCL) reports from sub-Saharan Africa (SSA) are remarkably rare, despite early childhood acquisition and high prevalence of the causative infectious agent, Epstein-Barr virus (EBV), and frequent occurrence of other lymphoproliferative disorders causally associated with EBV. CASE PRESENTATIONS: At a national teaching hospital in Malawi, three patients of African descent were seen with ENKTCL between 2013 and 2014. Patients were aged between 29 and 60 years, two with craniofacial involvement and one with a primary abdominal tumor, and all were HIV-negative...
September 6, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28877615/clinicopathologic-investigation-of-methotrexate-induced-lymphoproliferative-disorders-with-a-focus-on-regression
#11
Michihide Tokuhira, Shuntaro Saito, Ayumi Okuyama, Katsuya Suzuki, Morihiro Higashi, Shuji Momose, Takayuki Shimizu, Takehiko Mori, Tomoe Anan-Nemoto, Koichi Amano, Shinichiro Okamoto, Tsutomu Takeuchi, Jun-Ichi Tamaru, Masahiro Kizaki
Although recent accumulative data reveal the clinicopathogenesis of regression in methotrexate-induced lymphoproliferative disorders (MTX-LPDs), the precise understanding including this category remains controversial. In this study, we analyzed 62 patients with MTX-LPD. Forty-three patients showed regression (Reg group), with high rates of Hodgkin lymphoma (HL) and LPD (90 and 88%, respectively). Among the 43 patients of the Reg group, 14 patients (33%) relapsed. The median duration before relapse in the Reg group was 10...
September 7, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28877074/gata3-immunohistochemical-staining-in-hodgkin-lymphoma-diagnostic-utility-in-differentiating-classic-hodgkin-lymphoma-from-nodular-lymphocyte-predominant-hodgkin-lymphoma-and-other-mimicking-entities
#12
Brie Kezlarian, Mohammad Alhyari, Girish Venkataraman, Kristin Karner, Kedar V Inamdar, Madhu P Menon
BACKGROUND: Classic Hodgkin lymphoma (CHL) and nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) are clinically distinct entities, with different prognostic and treatment implications. In addition, several large B-cell lymphomas and some T-cell lymphomas can mimic CHL. Differentiating these entities from CHL is crucial for ensuring appropriate therapy. GATA3 is a T-cell transcription factor involved in T-cell maturation and has been previously shown to be overexpressed in CHL cells via gene expression profiling...
September 4, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28874193/extranodal-nasal-type-natural-killer-t-cell-lymphoma-with-penile-involvement-a-case-report-and-review-of-the-literature
#13
Xiaotian Wang, Zimu Gong, Shawn Xiang Li, Wei Yan, Yongsheng Song
BACKGROUND: Extranodal natural killer/T-cell lymphoma (ENKTL) usually presents as a localized disease in the nasal cavity; extension to the male genitourinary system is very rare and has been characterized only recently. Most cases present with predominantly extranodal involvement, advanced stage disease, highly aggressive course, and strong association with Epstein-Barr virus (EBV). While metastasis is common in ENKTLs, the penis is rarely involved in both nasal and non-nasal ENKTLs and only one report was published to date...
September 6, 2017: BMC Urology
https://www.readbyqxmd.com/read/28845389/ebv-driven-natural-killer-cell-disease-of-the-central-nervous-system-presenting-as-subacute-cognitive-decline
#14
Francesca M Brett, Richard Flavin, Daphne Chen, Teresa Loftus, Seamus Looby, Allan McCarthy, Cillian de Gascun, Elaine S Jaffe, Nurul Nor, Mohsen Javadpour, Dominick McCabe
Brain biopsy in patients presenting with subacute encephalopathyis never straightforward and only undertaken when a 'treatable condition' is a realistic possibility. This 63 year old right handed, immunocompetent Caucasian woman presented with an 8 month history of rapidly progressive right-sided hearing impairment, a 4 month history of intermittent headaches, tinnitus, 'dizziness', dysphagia, nausea and vomiting, with the subsequent evolution of progressive gait ataxia and a subacute global encephalopathy...
November 2017: Human Pathology (New York)
https://www.readbyqxmd.com/read/28842185/early-diagnosis-of-pi3k%C3%AE-syndrome-in-a-2-years-old-girl-with-recurrent-otitis-and-enlarged-spleen
#15
F Saettini, M A Pelagatti, D Sala, D Moratto, S Giliani, R Badolato, A Biondi
Heterozygous gain of function mutations in the gene encoding p110δ subunit of PI3K have been recently associated with activated PI3K-δ syndrome (APDS), a novel combined immune deficiency characterized by recurrent sinopulmonary infections, lymphopenia, reduced class-switched memory B cells, lymphadenopathy, CMV and/or EBV viremia and EBV-related lymphoma. Here we report a dominant gain of function PIK3CD mutation (E1021K) in a patient presenting with recurrent otitis media, massive splenomegaly, and persistent EBV-viraemia...
August 31, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28838455/an-unusual-posttransplant-t-cell-lymphoma-after-liver-transplantation-a-case-report
#16
I E Obiorah, M Ozdemirli
Posttransplantation lymphoproliferative disorders (PTLDs) encompass a spectrum of heterogeneous entities ranging from benign lymphocytic proliferations to high-grade malignant lymphomas. The majority of PTLDs are associated with reactivation of Epstein-Barr virus (EBV), which induces B-cell proliferation and occurs in the setting of severe immune suppression after solid organ or bone marrow transplantation. T-cell/natural killer cell PTLDs are relatively rare, constituting ∼15% of all cases. T-cell PTLDs are usually aggressive, and outcomes are poor...
September 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28837889/humanized-mouse-models-for-epstein-barr-virus-infection
#17
REVIEW
Christian Münz
It is essential for the human immune system to control Epstein Barr virus (EBV), because this common human γ-herpesvirus efficiently spreads through the human population with more than 90% being persistently infected after 20 years of age even in developed countries. Moreover, it threatens each host with its potent growth transforming properties, readily immortalizing human B cells into persistently growing lymphoma cell lines. Since this virus only infects humans, mice with reconstituted human immune system components provide an informative in vivo model to study EBV infection, the associated tumor formation and immune control thereof...
August 21, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28835489/epstein-barr-virus-lmp1-mediated-oncogenicity
#18
Liang Wei Wang, Sizun Jiang, Benjamin E Gewurz
Epstein-Barr virus Latent Membrane Protein 1 (LMP1) is expressed in multiple human malignancies, including nasopharynegeal carcinoma, Hodgkin and immunosuppression-associated lymphomas. LMP1 mimics CD40 signaling to activate multiple growth and survival pathways, in particular NF-κB. LMP1 has critical roles in EBV-driven B-cell transformation, and its expression causes fatal lymphoproliferative disease in immunosuppressed mice. Here, we review recent developments in studies of LMP1 signaling, LMP1-induced host dependency factors, mouse models of LMP1 lymphomagenesis and anti-LMP1 immunotherapy approaches...
August 23, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28831508/-who-classification-and-clinical-spectrum-of-cutaneous-lymphomas
#19
REVIEW
C Mitteldorf, S Grabbe, R Stadler
BACKGROUND: Cutaneous lymphomas are rare skin cancers with a wide clinical spectrum. OBJECTIVE: To give an overview of the current classification and the clinical spectrum of cutaneous lymphomas. MATERIAL AND METHODS: Analysis and summary of the current literature concerning the different entities of cutaneous lymphomas. RESULTS: A few modifications in the nomenclature of cutaneous lymphoma have been introduced in the revised version of the WHO classification 2016...
August 22, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28822832/combined-immunodeficiency-with-ebv-positive-b-cell-lymphoma-and-epidermodysplasia-verruciformis-due-to-a-novel-homozygous-mutation-in-rasgrp1
#20
Craig D Platt, Ari J Fried, Rodrigo Hoyos-Bachiloglu, G Naheed Usmani, Birgitta Schmidt, Jennifer Whangbo, Roberto Chiarle, Janet Chou, Raif S Geha
RASGRP1 is a guanine-nucleotide-exchange factor essential for MAP-kinase mediated signaling in lymphocytes. We report the second case of RASGRP1 deficiency in a patient with a homozygous nonsense mutation in the catalytic domain of the protein. The patient had epidermodysplasia verruciformis, suggesting a clinically important intrinsic T cell function defect. Like the previously described patient, our proband also presented with CD4(+) T cell lymphopenia, impaired T cell proliferation to mitogens and antigens, reduced NK cell function, and EBV-associated lymphoma...
August 16, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
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