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ebv associated lymphoma

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https://www.readbyqxmd.com/read/28077657/lmp1-and-lmp2a-collaborate-to-promote-epstein-barr-virus-ebv-induced-b-cell-lymphomas-in-a-cord-blood-humanized-mouse-model-but-are-not-essential
#1
Shi-Dong Ma, Ming-Han Tsai, James C Romero-Masters, Erik A Ranheim, Shane M Huebner, Jillian Bristol, Henri-Jacques Delecluse, Shannon C Kenney
: Epstein-Barr virus (EBV) infection is associated with B cell lymphomas in humans. The ability of EBV to convert human B cells into long-lived lymphoblastoid cell lines (LCLs) in vitro requires the collaborative effects of EBNA2 (which hijacks notch signaling), LMP1 (which mimics CD40 signaling), and EBNA 3A/3C (which inhibit oncogene-induced senescence and apoptosis). However, we recently showed that an LMP1-deleted EBV mutant induces B cell lymphomas in a newly developed cord blood-humanized mouse model that allows EBV-infected B cells to interact with CD4 T cells (the major source of CD40 ligand)...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28060369/virus-associated-neoplasms-of-the-nasopharynx-and-sinonasal-tract-diagnostic-problems
#2
John Kc Chan
A significant fraction of nasopharyngeal and sinonasal tumors are associated with Epstein-Barr virus (EBV) or human papillomavirus (HPV). Nasopharyngeal carcinoma (NPC) and extranodal NK/T-cell lymphoma harbor EBV in practically all cases, although a small proportion of cases of the former harbor HPV. Sinonasal inverted papillomas harbor HPV in about 25% of cases. Sinonasal squamous cell carcinomas harbor transcriptionally active HPV in about 20% of cases, and limited data suggest that this subset has a better prognosis than the HPV-negative subset...
January 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28059091/identification-of-distinct-subgroups-of-ebv-positive-post-transplant-diffuse-large-b-cell-lymphoma
#3
Julie Morscio, Julio Finalet Ferreiro, Sara Vander Borght, Emilie Bittoun, Olivier Gheysens, Daan Dierickx, Gregor Verhoef, Iwona Wlodarska, Thomas Tousseyn
Post-transplantation lymphoproliferative disorder is an aggressive complication of transplantation, most frequently of diffuse large B-cell lymphoma morphology and associated with Epstein-Barr virus (EBV) infection/reactivation. In this study the microenvironment of EBV(+) (n=23) and EBV(-) (n=9) post-transplant non-germinal center B-cell diffuse large B-cell lymphoma was characterized. Of EBV(+) cases somatic hypermutation analysis, gene expression profiling, and extensive phenotyping were performed. Our results demonstrated variable cytotoxic T-cell infiltration and significantly increased CD163(+) M2 macrophage infiltration in EBV(+) compared with EBV(-) post-transplant diffuse large B-cell lymphoma...
January 6, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28056294/-the-understanding-of-epstein-barr-virus-associated-lymphoproliferative-disorder
#4
X G Zhou, Y L Zhang, J L Xie, Y H Huang, Y Y Zheng, W S Li, H Chen, F Liu, H X Pan, P Wei, Z Wang, Y C Hu, K Y Yang, H L Xiao, M J Wu, W H Yin, K Y Mei, G Chen, X C Yan, G Meng, G Xu, J Li, S F Tian, J Zhu, Y Q Song, W J Zhang
In recent years, there are increasing articles concerning Epstein-Barr virus associated lymphoproliferative disorder (EBV+ LPD), and the name of EBV+ LPD is used widely. However, the meaning of EBV+ LPD used is not the same, which triggered confusion of the understanding and obstacles of the communication. In order to solve this problem. Literature was reviewed with combination of our cases to clarify the concept of EBV+ LPD and to expound our understanding about it. In general, it is currently accepted that EBV+ LPD refers to a spectrum of lymphoid tissue diseases with EBV infection, including hyperplasia, borderline lesions, and neoplastic diseases...
December 8, 2016: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28036258/epstein-barr-virus-ebna2-directs-doxorubicin-resistance-of-b-cell-lymphoma-through-ccl3-and-ccl4-mediated-activation-of-nf-%C3%AE%C2%BAb-and-btk
#5
Joo Hyun Kim, Won Seog Kim, Jung Yong Hong, Kung Ju Ryu, Seok Jin Kim, Chaehwa Park
Epstein-Barr virus (EBV)-encoded nuclear antigen, EBNA2, expressed in EBV-infected B lymphocytes is critical for lymphoblastoid cell growth. Microarray profiling and cytokine array screening revealed that EBNA2 is associated with upregulation of the chemokines CCL3 and CCL4 in lymphoma cells. Depletion or inactivation of CCL3 or CCL4 sensitized DLBCL cells to doxorubicin. Our results indicate that EBV influences cell survival via an autocrine mechanism whereby EBNA2 increases CCL3 and CCL4, which in turn activate the Btk and NF-κB pathways, contributing to doxorubicin resistance of B lymphoma cells...
December 27, 2016: Oncotarget
https://www.readbyqxmd.com/read/28034523/prognostic-significance-of-epstein-barr-virus-ebv-infection-in%C3%A2-hodgkin-lymphoma-patients
#6
Ben Dhiab Myriam, Ziadi Sonia, Saad Hanene, Louhichi Teheni, Trimeche Mounir
INTRODUCTION: The prognostic significance of Epstein-Barr virus (EBV) infection in Hodgkin lymphoma (HL) is still controversial. In this work we sought to examine the prognostic differences between EBV-positive and -negative HL through a series of 131 cases from Tunisia. METHODS: The status of EBV was assessed by EBV-encoded RNA (EBER) in situ hybridization. Results were correlated to patients' characteristics and outcome. RESULTS: EBV was detected in the malignant cells in 62 of 131 HL cases (47...
December 26, 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28032863/short-term-inhibition-of-tert-induces-telomere-length-independent-cell-cycle-arrest-and-apoptotic-response-in-ebv-immortalized-and-transformed-b-cells
#7
Andrea Celeghin, Silvia Giunco, Riccardo Freguja, Manuela Zangrossi, Silvia Nalio, Riccardo Dolcetti, Anita De Rossi
Besides its canonical role in stabilizing telomeres, telomerase reverse transcriptase (TERT) may promote tumorigenesis through extra-telomeric functions. The possible therapeutic effects of BIBR1532 (BIBR), a powerful TERT inhibitor, have been evaluated in different cellular backgrounds, but no data are currently available regarding Epstein-Barr virus (EBV)-driven B-cell malignancies. Our aim was to characterize the biological effects of TERT inhibition by BIBR on EBV-immortalized lymphoblastoid cell lines (LCLs) and fully transformed Burkitt's lymphoma (BL) cell lines...
December 29, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/28031835/pulmonary-lymphoepithelioma-like-carcinoma-with-echinoderm-microtubule-associated-protein-like-4-anaplastic-lymphoma-kinase-eml4-alk-fusion-gene
#8
Naoko Ose, Teruka Kawai, Daisuke Ishida, Yuko Kobori, Yukiyasu Takeuchi, Hidetoshi Senba
A pulmonary lymphoepithelioma-like carcinoma (PLELC) is similar to a lymphoepithelioma, a subtype of nasopharyngeal carcinoma and commonly associated with Epstein-Barr virus infection which is a rare tumour and classified in the group of "other and unclassified carcinoma" in the latest 2015 World Health Organization (WHO) classification. Some reports of lymphoepithelioma-like carcinoma (LELC) have noted an epidermal growth factor receptor (EGFR) mutation, whereas none have noted a mutation of the echinoderm microtubule-associated protein-like 4-anaplastic lymphoma kinase (EML4-ALK) fusion gene...
November 2016: Respirology Case Reports
https://www.readbyqxmd.com/read/28024491/-children-s-nk-t-cell-lymphoma-associated-hemophagocytic-syndrome-clinical-analysis-of-6-cases
#9
Yong-Zhi Zheng, Hao Zheng, Jian Li, Shao-Hua LE, Xue-Ling Hua, Zai-Sheng Chen, Ling Zheng, Mei Li, Yi-Qiao Chen, Qin-Li Gao, Jing-Hui Yang, Jian-Da Hu
OBJECTIVE: To study the clinical features, treatment and prognosis of patients with NK/T cell lymphoma-associated hemophagocytic syndrome(NK/T-LAHPS). METHODS: Retrospective analysis was used to explore the clinical data of 6 children with NK/T-LAHPS who were admitted in Department of Pediatric Hematology of Fujian Medical University Union Hospital from July 2012 to June 2016. The 6 patients included 4 boys and 2 girls, with a median age of 4 years(range 1.75 to 11)...
December 2016: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28018698/combination-immunosuppressive-therapy-including-rituximab-for-epstein-barr-virus-associated-hemophagocytic-lymphohistiocytosis-in-adult-onset-still-s-disease
#10
Eva Johanna Schäfer, Wolfram Jung, Peter Korsten
Hemophagocytic lymphopcytosis (HLH) is a life-threatening condition. It can occur either as primary form with genetic defects or secondary to other conditions, such as hematological or autoimmune diseases. Certain triggering factors can predispose individuals to the development of HLH. We report the case of a 25-year-old male patient who was diagnosed with HLH in the context of adult-onset Still's disease (AOSD) during a primary infection with Epstein-Barr virus (EBV). During therapy with anakinra and dexamethasone, he was still symptomatic with high-spiking fevers, arthralgia, and sore throat...
2016: Case Reports in Rheumatology
https://www.readbyqxmd.com/read/28018450/acute-gastritis-associated-with-epstein-barr-virus-infection-in-a-child
#11
Ji Mok Kim, Chun Woo Song, Kyu Sang Song, Jae Young Kim
Infectious mononucleosis is Epstein-Barr virus (EBV) inducing a self-limiting clinical syndrome characterized by fever, sore throat, hepatosplenomegaly, and generalized lymphadenopathy. Gastrointestinal symptoms of EBV infection are nonspecific and occur rarely. EBV inducing acute gastrointestinal pathology is poorly recognized without suspicion. Careful consideration is needed to diagnose gastric involvement of EBV infection including gastric lymphoma, gastric cancer, and gastritis. A few recent cases of gastritis associated with EBV infection have been reported in adolescents and adults...
November 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28011864/combined-immunodeficiency-and-epstein-barr-virus-induced-b-cell-malignancy-in-humans-with-inherited-cd70-deficiency
#12
Hassan Abolhassani, Emily S J Edwards, Aydan Ikinciogullari, Huie Jing, Stephan Borte, Marcus Buggert, Likun Du, Mami Matsuda-Lennikov, Rosa Romano, Rozina Caridha, Sangeeta Bade, Yu Zhang, Juliet Frederiksen, Mingyan Fang, Sevgi Kostel Bal, Sule Haskologlu, Figen Dogu, Nurdan Tacyildiz, Helen F Matthews, Joshua J McElwee, Emma Gostick, David A Price, Umaimainthan Palendira, Asghar Aghamohammadi, Bertrand Boisson, Nima Rezaei, Annika C Karlsson, Michael J Lenardo, Jean-Laurent Casanova, Lennart Hammarström, Stuart G Tangye, Helen C Su, Qiang Pan-Hammarström
In this study, we describe four patients from two unrelated families of different ethnicities with a primary immunodeficiency, predominantly manifesting as susceptibility to Epstein-Barr virus (EBV)-related diseases. Three patients presented with EBV-associated Hodgkin's lymphoma and hypogammaglobulinemia; one also had severe varicella infection. The fourth had viral encephalitis during infancy. Homozygous frameshift or in-frame deletions in CD70 in these patients abolished either CD70 surface expression or binding to its cognate receptor CD27...
January 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28009988/a-neutralized-human-lmp1-igg-inhibits-enktl-growth-by-suppressing-the-jak3-stat3-signaling-pathway
#13
Yuan Mao, Jun Wang, Mingzhi Zhang, Weifei Fan, Qi Tang, Siping Xiong, Xiaojun Tang, Juqing Xu, Lin Wang, Shu Yang, Suyao Liu, Li Xu, Yan Chen, Lin Xu, Rong Yin, Jin Zhu
Latent membrane protein 1 (LMP1), which is associated with the development of different types of Epstein-Barr virus (EBV) related lymphoma, has been suggested to be an important oncoprotein. In this study, a human anti-LMP1 IgG antibody (LMP1-IgG) was constructed and characterized by ELISA, western blotting (WB), affinity and immunohistochemistry (IHC) analyses. CCK-8, MTT, apoptosis assays, antibody-dependent cell-mediated cytotoxicity (ADCC) and CDC (complement-dependent cytotoxicity) assays were performed to evaluate the inhibitory effects of LMP1-IgG on extranodal nasal-type natural killer (NK)/T-cell lymphoma (ENKTL)...
December 20, 2016: Oncotarget
https://www.readbyqxmd.com/read/28008151/tonsillar-cd56brightnkg2a-nk-cells-restrict-primary-epstein-barr-virus-infection-in-b-cells-via-ifn-%C3%AE
#14
Aurelia Jud, Monika Kotur, Christoph Berger, Claudine Gysin, David Nadal, Anna Lünemann
Natural killer (NK) cells constitute the first line of defense against viruses and cancers cells. Epstein-Barr virus (EBV) was the first human virus to be directly implicated in carcinogenesis, and EBV infection is associated with a broad spectrum of B cell lymphomas. How NK cells restrict EBV-associated oncogenesis is not understood. Here, we investigated the efficacies and mechanisms of distinct NK cell subsets from tonsils, the portal of entry of EBV, in limiting EBV infection in naïve, germinal center-associated and memory B cells...
December 20, 2016: Oncotarget
https://www.readbyqxmd.com/read/28005758/pathological-mandibular-fracture-associated-with-diffuse-large-b-cell-lymphoma-in-hiv-positive-patient
#15
Marina Reis Oliveira, Darcy Fernandes, Marisa Aparecida Cabrini Gabrielli, Cleverton Roberto de Andrade, Cláudia Maria Navarro, Valfrido Antonio Pereira-Filho
This article describes the occurrence of diffuse large B-cell lymphoma in a 39-year-old human immunodeficiency virus-positive patient. The patient sought medical care complaining of increased volume in the right mandibular angle and imaging tests showed an extensive radiolucency with undefined boundaries compromising the mandibular border. After the incisional biopsy, the patient had a pathological fracture in the region, which was properly treated in a second surgical procedure using a 2.4-mm reconstruction plate...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28004435/biopsy-proven-case-of-epstein-barr-virus-ebv-associated-vasculitis-of-the-central-nervous-system
#16
Kohei Kano 鹿野耕平, Takayuki Katayama, Shiori Takeguchi, Asuka Asanome, Kae Takahashi, Tsukasa Saito, Jun Sawada, Masato Saito, Ryogo Anei, Kyousuke Kamada, Naoyuki Miyokawa, Hiroshi Nishihara, Naoyuki Hasebe
A 75-year-old woman was admitted to our hospital with rapidly deteriorating consciousness disturbance. She had a 7-year history of rheumatoid arthritis (RA), which had been treated with methotrexate (MTX) and prednisolone. Brain T2-weighted MRI showed diffuse high-intensity lesions in the cerebral subcortical and deep white matter, bilateral basal ganglia and thalamus. A cerebrospinal fluid examination revealed elevated protein levels and positive Epstein-Barr virus (EBV) DNA. Human immunodeficiency virus was negative...
December 22, 2016: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/28003489/restricted-tet2-expression-in-germinal-center-type-b-cells-promotes-stringent-epstein-barr-virus-latency
#17
Coral K Wille, Yangguang Li, Lixin Rui, Eric C Johannsen, Shannon C Kenney
: EBV latently infects normal B cells, and contributes to the development of certain human lymphomas. Newly infected B cells support a highly transforming form (type III) of viral latency; however, long-term EBV infection in immunocompetent hosts is limited to B cells with a more restricted form of latency (type I) where most viral gene expression is silenced by promoter DNA methylation. How EBV converts latency type is unclear, although it is known that type I latency is associated with germinal center (GC) B cell phenotype, and type III latency with an activated B-cell (ABC) phenotype...
December 21, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27998299/rituximab-etoposide-methylprednisolone-high-dose-cytarabine-and-cisplatin-in-the-treatment-of-secondary-hemophagocytic-lymphohistiocytosis-with-classical-hodgkin-lymphoma-a-case-report-and-review-of-the-literature
#18
Steve Hu, Pranshu Bansal, David Lynch, Cristhiam Mauricio Rojas Hernandez, Zoneddy Dayao
BACKGROUND: Hemophagocytic lymphohistiocytosis is becoming an increasingly recognized disorder in adults. Classical Hodgkin lymphoma is a relatively uncommon etiology of hemophagocytic lymphohistiocytosis and may complicate treatment options. Rituximab, etoposide, methylprednisolone, high-dose cytarabine, and cisplatin are discussed here as a treatment regimen. CASE PRESENTATION: A 66-year-old Hispanic man previously in good health presented with a 1-month history of recurrent fevers, chills, and night sweats and a 3-week history of new onset jaundice...
December 20, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27988064/cutaneous-ebv-related-lymphoproliferative-disorders
#19
Alejandro A Gru, Elaine S Jaffe
This article will focus on the cutaneous lymphoproliferative disorders associated with EBV, with an emphasis on the upcoming changes in the revised 4th Edition of the WHO classification of tumors of the hematopoietic system, many of which deal with cutaneous disorders derived from NK-cells or T-cells. Extranodal NK/T-cell lymphoma usually presents in the upper aerodigestive tract, but can involve the skin secondarily. EBV-associated T- and NK-cell lymphoproliferative disorders (LPD) in the pediatric age group include the systemic diseases, chronic active EBV infection (CAEBV) and systemic EBV+ T-cell lymphoma of childhood...
December 7, 2016: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/27982024/epstein-barr-virus-positive-follicular-lymphoma
#20
Nicholas Mackrides, German Campuzano-Zuluaga, Yvan Maque-Acosta, Adrienne Moul, Nouf Hijazi, Francis Offiong Ikpatt, Ronald Levy, Ramiro E Verdun, Kranthi Kunkalla, Yasodha Natkunam, Izidore S Lossos, Francisco Vega, Jennifer Chapman
Epstein-Barr virus (EBV) -associated follicular lymphoma is only rarely reported. Herein, we report the largest series analyzing prevalence and clinicopathologic characteristics of EBV-associated follicular lymphoma occurring in unselected cases. Out of 382 analyzed cases, 10 EBV-positive follicular lymphomas were identified (prevalence=2.6%, 95% confidence interval 1.3-4.0%). All EBV-positive follicular lymphomas showed EBV-encoded small RNA-positive lymphoma cells present in a follicular distribution. Of these, eight also had tissue available for testing of expression of latent membrane protein 1 (LMP1), out of which six (75%) were positive...
December 16, 2016: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
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