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https://www.readbyqxmd.com/read/27913781/synchronous-microscopic-epstein-barr-virus-positive-diffuse-large-b-cell-lymphoma-of-the-adrenal-and-lymphoplasmacytic-lymphoma-de-novo-disease-or-transformation
#1
Mufaddal T Moonim, Alia Nasir, Jonathan Hubbard, Nicholas Ketley, Paul Fields
Lymphomas arising in the adrenal are rare, and to our knowledge, 2 cases of Epstein-Barr virus (EBV)-positive diffuse large B-cell lymphomas (DLBCL) in an adrenal pseudocyst have been reported. We report an incidental EBV-positive DLBCL arising in an adrenal pseudocyst in a 58-year-old man with a 7-year history of lymphoplasmacytic lymphoma (LPL). The DLBCL was present in the fibrinous exudate, while the LPL resided in the cyst wall. The patient underwent de-roofing of the same cyst 3 years previously; review of histology revealed foci of LPL in the cyst wall, but not of DLBCL...
December 2, 2016: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27913506/checkpoint-inhibition-and-cellular-immunotherapy-in-lymphoma
#2
Premal Lulla, Helen E Heslop
Hodgkin and non-Hodgkin lymphoma are both good targets for immunotherapy, as they are accessible to antibodies and cell-based immunotherapy, express costimulatory molecules, and express lineage-restricted, viral, and unique tumor antigens. Blockade of the programmed-death 1 (PD-1) immune checkpoint has produced very encouraging response rates in patients with Hodgkin lymphoma, whereas adoptive transfer of Epstein-Barr Virus (EBV)-specific T cells has shown clinical activity in patients with posttransplant lymphoma and other EBV-associated lymphomas...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913304/effects-of-nongenetic-factors-on-immune-cell-dynamics-in-early-childhood-the-generation-r-study
#3
Diana van den Heuvel, Michelle A E Jansen, Kazem Nasserinejad, Willem A Dik, Ellen G van Lochem, Liesbeth E Bakker-Jonges, Halima Bouallouch-Charif, Vincent W V Jaddoe, Herbert Hooijkaas, Jacques J M van Dongen, Henriëtte A Moll, Menno C van Zelm
BACKGROUND: . Numbers of blood leukocyte subsets are highly dynamic in childhood and differ greatly between individuals. Inter-individual variation is only partly accounted for by genetic factors. OBJECTIVE: Determine which nongenetic factors affect the dynamics of innate leukocytes, and naive and memory lymphocyte subsets. METHODS: . We performed six-color flow cytometry and linear mixed effect modeling to define the dynamics of 62 leukocyte subsets from birth to 6 years of age in 1,182 children with one to five measurements per individual...
November 29, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27906865/management-of-post-transplant-lymphoproliferative-disorders
#4
Gabriela Llaurador, Lauren McLaughlin, Birte Wistinghausen
PURPOSE OF REVIEW: Post-transplant lymphoproliferative disease (PTLD) is a major complication of hematopoietic stem cell and solid organ transplantation. The incidence of transplantation in childhood has been steadily rising, making PTLD the most common form of lymphoproliferation in childhood. The purpose of this review is to summarize the role of the Epstein-Barr virus (EBV) in the pathophysiology and discuss the management of PTLD. RECENT FINDINGS: More than 90% of pediatric PTLD is EBV-positive...
November 30, 2016: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/27904117/successful-cord-blood-stem-cell-transplantation-for-an-adult-case-of-chronic-active-epstein-barr-virus-infection
#5
Masuho Saburi, Masao Ogata, Takako Satou, Natsumi Yoshida, Kentaro Nagamatsu, Yuko Nashimoto, Yui Moroga, Kuniko Takano, Kazuhiro Kohno, Kuniaki Shirao
A 41-year-old man was referred to our hospital for treatment of anaplastic lymphoma kinase (ALK)-negative anaplastic large cell lymphoma. Chronic active Epstein-Barr virus (CAEBV) was diagnosed based on the findings of elevated EBV antibody titers and positive EBV-DNA in the peripheral blood, and cord blood stem cell transplantation (CBT) was performed. The EBV-DNA levels in the blood fell below the limit of detection. His lymphoma relapsed on Day 165 with the appearance of eruptions, which disappeared after the withdrawal of tacrolimus...
2016: Internal Medicine
https://www.readbyqxmd.com/read/27903901/core-binding-factor-cbf-is-required-for-epstein-barr-virus-ebna3-proteins-to-regulate-target-gene-expression
#6
Kostas Paschos, Quentin Bazot, Guiyi Ho, Gillian A Parker, Jonathan Lees, Geraint Barton, Martin J Allday
ChIP-seq performed on lymphoblastoid cell lines (LCLs), expressing epitope-tagged EBNA3A, EBNA3B or EBNA3C from EBV-recombinants, revealed important principles of EBNA3 binding to chromatin. When combined with global chromatin looping data, EBNA3-bound loci were found to have a singular character, each directly associating with either EBNA3-repressed or EBNA3-activated genes, but not with both. EBNA3A and EBNA3C showed significant association with repressed and activated genes. Significant direct association for EBNA3B loci could only be shown with EBNA3B-repressed genes...
November 29, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27902324/ebi2-expression-in-b-lymphocytes-is-controlled-by-the-epstein-barr-virus-transcription-factor-brrf1-na-during-viral-infection
#7
Caleb Cornaby, Jilian L Jafek, Cameron Birrell, Vera Mayhew, Lauren Syndergaard, Jeffrey Mella, Wesley Cheney, Brian D Poole
EBI2 is an important chemotactic receptor that is involved in proper B-cell T-cell interactions. Epstein-Barr Virus (EBV) has been shown to upregulate this gene upon infection of cell lines, but the timing and mechanism of this upregulation, as well as its importance to EBV infection, remain unknown. This work investigated EBV's manipulation of EBI2 expression of primary naïve B cells. EBV infection induces EBI2 expression resulting in elevated levels of EBI2 after 24 hours until 7 days post-infection, followed by a dramatic decline (p = 0...
November 16, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27900085/id1-upregulation-and-foxo3a-downregulation-by-epstein-barr-virus-encoded-lmp1-in-hodgkin-s-lymphoma
#8
Jun-Ichiro Ikeda, Naoki Wada, Satoshi Nojima, Shinichiro Tahara, Yoko Tsuruta, Kaori Oya, Eiichi Morii
Cancer-initiating cells (CICs) are specialized cells that have the ability to self-renew and are multipotent. We recently demonstrated that Forkhead box O3a (FoxO3a)-expressing cells exhibited a CIC-like potential in Hodgkin's lymphoma (HL). A proportion of HL patients are infected with Epstein-Barr virus (EBV). EBV-encoded latent membrane protein (LMP) 1 downregulates FoxO3a, suggesting that FoxO3a expression may be abolished in EBV-positive HL. Inhibitors of DNA-binding (ID) proteins are highly conserved transcription factors mediating stem cell functions...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27893764/virus-mediated-alterations-in-mirna-factors-and-degradation-of-viral-mirnas-by-mcpip1
#9
Christine Happel, Dhivya Ramalingam, Joseph M Ziegelbauer
Kaposi's sarcoma-associated herpesvirus (KSHV), the causative agent of Kaposi's sarcoma, encodes 25 mature viral miRNAs. MCP-1-induced protein-1 (MCPIP1), a critical regulator of immune homeostasis, has been shown to suppress miRNA biosynthesis via cleavage of precursor miRNAs through its RNase domain. We demonstrate that MCPIP1 can directly cleave KSHV and EBV precursor miRNAs and that MCPIP1 expression is repressed following de novo KSHV infection. In addition, repression with siRNAs to MCPIP1 in KSHV-infected cells increased IL-6 and KSHV miRNA expression, supporting a role for MCPIP1 in IL-6 and KSHV miRNA regulation...
November 2016: PLoS Biology
https://www.readbyqxmd.com/read/27887749/angiogenic-factors-are-associated-with-multiple-sclerosis
#10
Sajad Karampoor, Hamid Zahednasab, Sreeram Ramagopalan, Masoud Mehrpour, Hossein Keyvani
A growing body of evidence suggests that angiogenesis plays a crucial role in the pathogenesis of multiple sclerosis (MS). Animal models of MS show a significant improvement when the process of angiogenesis is halted. In this study, we measured the serum levels of vascular-endothelial growth factor (VEGF), soluble Endoglin (sEng), angiopoietin 1(Ang-1), angiopoietin 2 (Ang-2), and uric acid (UA) as well as serum anti-Epstein-Barr virus (EBV) EBNA-1 IgG in 50 MS patients (including 20 newly diagnosed and 30 patients taking IFN-beta for >6months) and 40 healthy individuals...
November 17, 2016: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/27886133/epigenetic-impact-on-ebv-associated-b-cell-lymphomagenesis
#11
REVIEW
Shatadru Ghosh Roy, Erle S Robertson, Abhik Saha
Epigenetic modifications leading to either transcriptional repression or activation, play an indispensable role in the development of human cancers. Epidemiological study revealed that approximately 20% of all human cancers are associated with tumor viruses. Epstein-Barr virus (EBV), the first human tumor virus, demonstrates frequent epigenetic alterations on both viral and host genomes in associated cancers-both of epithelial and lymphoid origin. The cell type-dependent different EBV latent gene expression patterns appear to be determined by the cellular epigenetic machinery and similarly viral oncoproteins recruit epigenetic regulators in order to deregulate the cellular gene expression profile resulting in several human cancers...
November 24, 2016: Biomolecules
https://www.readbyqxmd.com/read/27883370/epstein-barr-virus-associated-hemophagocytic-syndrome-after-scrub-typhus-infection
#12
Jeong Woo Hong, Hyun Seon You, Tae Won Lee, Won Yong Jo, Bo Ra Kim, Young Sun Suh, In Gyu Bae, Oh Hyun Cho
There have been a small number of cases of scrub typhus-associated hemophagocytic syndrome (HPS), most of which were treated successfully using adequate antibiotics. Here, we report a case of Epstein-Barr virus (EBV)-associated HPS after scrub typhus infection that was not improved using antirickettsial treatment. A 73-year-old male who had been diagnosed with scrub typhus according to an eschar and a positive serology was transferred to our institution because of a persistent fever despite 7-day doxycycline therapy...
November 8, 2016: Infection & Chemotherapy
https://www.readbyqxmd.com/read/27883284/novel-biomarkers-of-nasopharyngeal-carcinoma-metastasis-risk-identified-by-reverse-phase-protein-array-based-tumor-profiling-with-consideration-of-plasma-epstein-barr-virus-dna-load
#13
Tao Xu, Bojin Su, Peiyu Huang, Weihong Wei, Yanming Deng, Vasudha Sehgal, Donghui Wang, Jun Jiang, Guoyi Zhang, Anfei Li, Huiling Yang, François X Claret
PURPOSE: In patients with Epstein-Barr virus (EBV)-associated nasopharyngeal carcinoma (NPC), intertumor heterogeneity causes interpatient heterogeneity in the risk of distant metastasis. We aimed to identify novel biomarkers of metastasis risk using reverse-phase protein array (RPPA) profiling of NPC patients at risk for metastasis and considering plasma EBV DNA load. EXPERIMENTAL DESIGN: A total of 98 patients with NPC with and without metastasis after treatment, matched with respect to clinical parameters, were enrolled...
November 24, 2016: Proteomics. Clinical Applications
https://www.readbyqxmd.com/read/27882252/sj%C3%A3-gren-s-syndrome-complicated-by-myeloid-natural-killer-cell-precursor-acute-leukemia-case-report-and-review-of-the-literature
#14
Hao Feng, Jianlin Qiao, Ningning Ding, Wei Chen, Kunming Qi, Xiuying Pan, Jiang Cao, Kailin Xu
We report a case of Sjögren's syndrome (SS) complicated by myeloid/natural killer (NK) cell precursor acute leukemia (M/NKPAL). A 75-year-old woman with a previous SS history for 2 years was routinely treated. Peripheral blood progenitor cells were increased, and subsequent bone marrow cell morphology examination showed the presence of acute myeloid leukemia type M4. However, flow cytometry analysis revealed that CD7/CD56/CD33/CD34/HLA-DR/cCD3 were all positive and myeloperoxidase- (MPO-) specific staining, other T cells, NK cells, and myeloid markers were all negative...
2016: Case Reports in Hematology
https://www.readbyqxmd.com/read/27881609/epstein-barr-virus-in-nasopharyngeal-carcinoma-of-guatemalan-and-brazilian-patients
#15
Alicia Rumayor Piña, Harim Tavares Dos Santos, Roman Carlos, Albina Altemani, Oslei Paes de Almeida
BACKGROUND: Nasopharyngeal carcinoma (NPC) is highly associated with Epstein-Barr virus (EBV), particularly the undifferentiated nonkeratinizing subtype. Prevalence of EBV in NPC in countries such as Guatemala and Brazil has not been studied. METHODS: We analyzed 19 cases of NPC, 11 from Guatemala and 8 from Brazil, for the presence of EBV by in situ hybridization and immunohistochemistry. Additionally, 19 hyperplastic adenoids from children were analyzed for EBV by in situ hybridization, 12 from Guatemala and 7 from Brazil...
November 23, 2016: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27879545/epstein-barr-virus-associated-mucocutaneous-ulcer-in-a-patient-with-t-cell-acute-lymphoblastic-leukemia-importance-of-accurate-diagnosis-and-conservative-management
#16
Anant Vatsayan, Ashish Gupta, Sanjay Ahuja, Rachel Egler, Rose C Beck, Yousif Matloub
Epstein-Barr virus-associated mucocutaneous ulcer (EBV-MCU) is a recently characterized entity that falls under the spectrum of EBV-lymphoproliferative disorders. First described in 2010 by Dojcinov et al, it is an EBV-driven localized proliferation of B cells, occurring in mucocutaneous tissues including the skin, the oropharynx, and the gastrointestinal tract of immunosuppressed patients in the absence of an intact T-cell repertoire. Typically, it has been described in elderly patients with age-related immunosenescence and patients who are on immunosuppressive therapy...
November 22, 2016: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/27878471/cerebrospinal-fluid-anti-epstein-barr-virus-specific-oligoclonal-igm-and-igg-bands-in-patients-with-clinically-isolated-and-guillain-barr%C3%A3-syndrome
#17
Diana Ferraro, Veronica Galli, Anna Maria Simone, Roberta Bedin, Francesca Vitetta, Elisa Merelli, Paolo Frigio Nichelli, Patrizia Sola
Epstein-Barr virus (EBV) has been implicated in multiple sclerosis (MS) pathogenesis. We aimed to assess the frequency of EBV-specific IgG and IgM oligoclonal bands (OCB) in cerebrospinal fluid (CSF) of 50 patients with clinically isolated syndrome (CIS) and in 27 controls with Guillain-Barré syndrome (GBS). Furthermore, we assessed correlations between the presence of OCB and CIS patients' CSF, MRI, and clinical variables. There was no difference in the proportion of CIS and GB patients with positivity for anti-EBV-specific IgG/IgM OCB...
November 22, 2016: Journal of Neurovirology
https://www.readbyqxmd.com/read/27877083/epstein-barr-virus-lytic-reactivation-regulation-and-its-pathogenic-role-in-carcinogenesis
#18
REVIEW
Hongde Li, Sufang Liu, Jianmin Hu, Xiangjian Luo, Namei Li, Ann M Bode, Ya Cao
Epstein-Barr virus (EBV) has been associated with several types of human cancers. In the host, EBV can establish two alternative modes of life cycle, known as latent or lytic and the switch from latency to the lytic cycle is known as EBV reactivation. Although EBV in cancer cells is found mostly in latency, a small number of lytically-infected cells promote carcinogenesis through the release of growth factors and oncogenic cytokines. This review focuses on the mechanisms by which EBV reactivation is controlled by cellular and viral factors, and discusses how EBV lytic infection contributes to human malignancies...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27873282/ebv-directed-t-cell-therapeutics-for-ebv-associated-lymphomas
#19
Lauren P McLaughlin, Stephen Gottschalk, Cliona M Rooney, Catherine M Bollard
Epstein Barr virus (EBV) is a human gamma herpes virus that establishes latency in B cells after primary infection. EBV generally only causes a mild, self-limiting viral illness but is also associated with several malignancies including posttransplantation lymphoproliferative disorder in the immunosuppressed host as well as Hodgkin and non-Hodgkin lymphoma in the immune competent host. The expression of EBV antigens by lymphoma has important applications as targets for adoptive T cell therapy. However, as many lymphomas only express subdominant EBV antigens that are less immunogenic, novel strategies are needed to manufacture EBV-specific T cell products specific for Latent Membrane Protein 1 (LMP1) and LMP2, which are expressed in lymphomas with type II and III latency...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27873281/generation-and-analysis-of-humanized-mouse-model-of-ebv-infection
#20
Ken-Ichi Imadome, Shigeyoshi Fujiwara
The recent development of severely immunodeficient mouse strains enabled the production of new-generation humanized mice, in which major components of the human immune system are reconstituted. These new-generation humanized mice can be infected with human pathogenic viruses that do not infect regular mice and target cells of the hematoimmune system. Here we describe the method for preparing humanized mice, infecting them with EBV, and for their virological and immunological analyses. The results obtained from our own mouse models are briefly described...
2017: Methods in Molecular Biology
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