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EBV Review

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https://www.readbyqxmd.com/read/29161056/de-novo-food-allergy-in-pediatric-liver-transplantation-recipients
#1
Ratchaneewan Sinitkul, Wiparat Manuyakorn, Wasu Kamchaisatian, Soamarat Vilaiyuk, Suwat Benjaponpitak, Chatmanee Lertudompholwanit, Suporn Treepongkaruna
BACKGROUND: Food allergy (FA) prevalence is increasing in pediatric liver transplantation (LT). However, the clinical course is still limited. OBJECTIVE: This retrospective cohort study aimed to identify the prevalence, risk factors, and the natural history of de novo FA in children post LT. METHODS: Medical records of pediatric LT recipients from Jan 2001 - Dec 2014 were reviewed. De novo FA was diagnosed by symptoms after exposure to culprit food occurring after LT, and improvement after diet elimination...
November 22, 2017: Asian Pacific Journal of Allergy and Immunology
https://www.readbyqxmd.com/read/29160853/therapeutic-strategies-against-epstein-barr-virus-associated-cancers-using-proteasome-inhibitors
#2
REVIEW
Kwai Fung Hui, Kam Pui Tam, Alan Kwok Shing Chiang
Epstein-Barr virus (EBV) is closely associated with several lymphomas (endemic Burkitt lymphoma, Hodgkin lymphoma and nasal NK/T-cell lymphoma) and epithelial cancers (nasopharyngeal carcinoma and gastric carcinoma). To maintain its persistence in the host cells, the virus manipulates the ubiquitin-proteasome system to regulate viral lytic reactivation, modify cell cycle checkpoints, prevent apoptosis and evade immune surveillance. In this review, we aim to provide an overview of the mechanisms by which the virus manipulates the ubiquitin-proteasome system in EBV-associated lymphoid and epithelial malignancies, to evaluate the efficacy of proteasome inhibitors on the treatment of these cancers and discuss potential novel viral-targeted treatment strategies against the EBV-associated cancers...
November 21, 2017: Viruses
https://www.readbyqxmd.com/read/29159070/primary-cytomegalovirus-infection-in-immunocompetent-adults-in-the-united-states-a-case-series
#3
Nathanial Nolan, Umme-Aiman Halai, Hariharan Regunath, LPatrick Smith, Christian Rojas-Moreno, William Salzer
Primary Cytomegalovirus (CMV) infection is often not suspected as a cause of fever of unknown origin (FUO) in immune-competent adults. We present a case-series of symptomatic primary CMV infection in immunocompetent adults presenting as fever of unknown origin (FUO). All patients with CMV serology tested between November 2008 and June 2016 underwent chart review. Cases were defined as those between 18 and 65 years of age with documented fever and elevated serum anti-CMV IgM. Exclusion criteria were organ specific CMV disease, positive serum anti-EBV IgM, or presence of any immunocompromising condition...
2017: IDCases
https://www.readbyqxmd.com/read/29153068/-atypical-profile-problem-in-serological-diagnosis-of-ebv
#4
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/29144413/epstein-barr-virus-hijacks-dna-damage-response-transducers-to-orchestrate-its-life-cycle
#5
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/29127522/common-genetic-variation-within-mir-146a-predicts-disease-onset-and-relapse-in-multiple-sclerosis
#6
Yuan Zhou, Ming Chen, Steve Simpson, Robyn M Lucas, Jac C Charlesworth, Nicholas Blackburn, Ingrid van der Mei, Anne-Louise Ponsonby, Bruce V Taylor
Despite extensive studies focusing on the changes in expression of microRNAs (miRNAs) in multiple sclerosis (MS) compared to healthy controls, few studies have evaluated the association of genetic variants of miRNAs with MS clinical course. We investigated whether a functional polymorphism in the MS associated miR-146a gene predicted clinical course (hazard of conversion to MS and of relapse, and annualized change in disability), using a longitudinal cohort study of persons with a first demyelinating event followed up to their 5-year review...
November 10, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/29123419/encephalitis-treatment-a-case-report-with-long-term-follow-up-of-ebv-pcr-in-cerebrospinal-fluid
#7
Fnu Zarlasht, Mashal Salehi, Mohammad Abu-Hishmeh, Muzammil Khan
Background: Epstein-Barr virus (EBV) has been found to cause infectious mononucleosis multiple times, but has been associated rarely with EBV encephalitis. Also, whenever it is diagnosed, it is always treated symptomatically. Case report: A case of confirmed EBV encephalitis is presented, which was treated with antiviral therapy resulting in complete clearance of the virus in cerebrospinal fluid and minimal neurologic symptoms after hospital discharge. Conclusion: The Infectious Diseases Society of America guidelines state that intravenous acyclovir is not recommended for EBV-related encephalitis...
2017: International Journal of General Medicine
https://www.readbyqxmd.com/read/29119031/pediatric-pulmonary-epstein-barr-virus-positive-diffuse-large-b-cell-lymphoma-a-case-report-and-review-of-the-literature
#8
Eric X Wei, Roberto F Silva, James D Cotelingam, Rodney E Shackelford
Non-Hodgkin's lymphoma (NHL) is a common malignancy of childhood; however, a lung primary presentation is an uncommon finding, as is finding an association with the Epstein-Barr virus (EBV). We report the case of a 23-month-old female who developed EBV-associated diffuse large B-cell lymphoma (DLBCL) that was initially thought to be pneumonia. Extensive tissue necrosis, focal angioinvasion, and angiodestruction were observed. She was refractory to various therapy regimens, subsequently developed DLBCL in the central nervous system, and eventually expired...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/29116588/the-regulatory-role-of-protein-phosphorylation-in-human-gammaherpesvirus-associated-cancers
#9
REVIEW
Yuyan Wang, Shuvomoy Banerjee, Ling Ding, Cankun Cai, Fang Wei, Qiliang Cai
Activation of specific sets of protein kinases by intracellular signal molecules has become more and more apparent in the past decade. Phosphorylation, one of key posttranslational modification events, is activated by kinase or regulatory protein and is vital for controlling many physiological functions of eukaryotic cells such as cell proliferation, differentiation, malignant transformation, and signal transduction mediated by external stimuli. Moreovers, the reversible modification of phosphorylation and dephosphorylation can result in different features of the target substrate molecules including DNA binding, protein-protein interaction, subcellular location and enzymatic activity, and is often hijacked by viral infection...
October 2017: Virologica Sinica
https://www.readbyqxmd.com/read/29116021/prognostic-value-of-plasma-epstein-barr-virus-dna-level-during-posttreatment-follow-up-in-the-patients-with-nasopharyngeal-carcinoma-having-undergone-intensity-modulated-radiotherapy
#10
Wen-Fei Li, Yuan Zhang, Xiao-Bin Huang, Xiao-Jing Du, Ling-Long Tang, Lei Chen, Hao Peng, Rui Guo, Ying Sun, Jun Ma
BACKGROUND: The value of Epstein-Barr virus (EBV) DNA assay during posttreatment follow-up of the patients with nasopharyngeal carcinoma (NPC) presenting with different pretreatment plasma EBV DNA levels remains unclear. In the present study, we aimed to evaluate the prognostic value of plasma EBV DNA assay during posttreatment follow-up in the patients with NPC who have undergone intensity-modulated radiotherapy. METHODS: The medical records of 385 NPC patients treated with intensity-modulated radiotherapy between November 2009 and February 2012 were reviewed...
November 7, 2017: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/29104494/pathogenic-role-of-exosomes-in-epstein-barr-virus-ebv-associated-cancers
#11
REVIEW
Sin-Yeang Teow, Kitson Liew, Alan Soo-Beng Khoo, Suat-Cheng Peh
Exosomes are 40- to 100-nm membrane-bound small vesicles that carry a great variety of cellular cargoes including proteins, DNA, messenger RNAs (mRNAs), and microRNAs (miRNAs). These nanovesicles are detected in various biological fluids such as serum, urine, saliva, and seminal fluids. Exosomes serve as key mediators in intercellular communication by facilitating the transfer and exchange of cellular components from cells to cells. They contain various pathogenic factors whereby their adverse effects have been implicated in multiple viral infections and cancers...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/29098417/low-intrathecal-antibody-production-despite-high-seroprevalence-of-epstein-barr-virus-in-multiple-sclerosis-a-review-of-the-literature
#12
REVIEW
Klemens Ruprecht, Brigitte Wildemann, Sven Jarius
BACKGROUND: Patients with multiple sclerosis (MS) frequently have an intrathecal production of antibodies to different common viruses, which can be detected by elevated antiviral antibody indices (AIs). There is a strong and consistent association of MS and Epstein-Barr virus (EBV) infection. OBJECTIVE: To systematically compare the frequencies of intrathecal antibody production to EBV, measles virus, rubella virus, varicella zoster virus (VZV) and herpes simplex virus (HSV) in patients with MS...
November 2, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/29093709/age-related-macular-degeneration-a-connection-between-human-herpes-virus-6a-induced-cd46-downregulation-and-complement-activation
#13
Walter Fierz
Viruses are able to interfere with the immune system by docking to receptors on host cells that are important for proper functioning of the immune system. A well-known example is the human immunodeficiency virus that uses CD4 cell surface molecules to enter host lymphocytes and thereby deleteriously destroying the helper cell population of the immune system. A more complicated mechanism is seen in multiple sclerosis (MS) where human herpes virus-6A (HHV-6A) infects astrocytes by docking to the CD46 surface receptor...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29082051/primary-cutaneous-follicle-centre-lymphoma-with-hodgkin-and-reed-sternberg-like-cells-a-case-report-and-review-of-the-literature
#14
Fatima A Aldarweesh, Diana O Treaba
An elderly woman with a complex medical history presented with a left forearm mass that slowly developed for several months. The excisional biopsy of this skin mass was remarkable for involvement by a follicle centre cell derived lymphoma with a nodular and diffuse pattern associated with a subset of scattered Hodgkin and Reed-Sternberg like cells. Fluorescence in situ hybridization studies did not detect the presence of IgH-bcl2 fusion transcript, and molecular studies were negative for immunoglobulin heavy chain gene rearrangements and EBV DNA sequences...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/29073638/intratumoural-pd-l1-expression-is-associated-with-worse-survival-of-patients-with-epstein-barr-virus-associated-gastric-cancer
#15
An Na Seo, Byung Woog Kang, Oh Kyoung Kwon, Ki Bum Park, Seung Soo Lee, Ho Young Chung, Wansik Yu, Han Ik Bae, Seong Woo Jeon, Hyojeung Kang, Jong Gwang Kim
BACKGROUND: This study investigated the clinical relevance and prognostic impact of the overall expression of programmed cell death protein ligand-1 (PD-L1) and programmed cell death protein ligand-2 (PD-L2), in patients with Epstein-Barr virus-associated gastric cancer (EBVaGC). METHODS: After reviewing 1318 consecutive cases of surgically resected or endoscopic submucosal dissected gastric cancers, the expression status of PD-L1 and PD-L2 in 120 patients with EBVaGC identified by EBV-encoded RNA in situ hybridisation was retrospectively analysed using immunohistochemistry (IHC)...
October 26, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29072774/human-papillomavirus-and-world-health-organization-type-iii-nasopharyngeal-carcinoma-multicenter-study-from-an-endemic-area-in-southern-china
#16
Wen Bo Huang, Jimmy Yu Wai Chan, Da Lie Liu
BACKGROUND: The current study was conducted to study the incidence of human papillomavirus (HPV)-associated nasopharyngeal carcinoma (NPC) in Southern China and the corresponding treatment outcome. METHODS: A retrospective chart review with a level of evidence of 4 was performed. RESULTS: Between 2000 and 2015, a total of 1328 patients with NPC were treated in 3 study institutes in Hong Kong and Foshan City in Guangdong Province, China. All tumors were undifferentiated, nonkeratinizing carcinoma, of which 91...
October 26, 2017: Cancer
https://www.readbyqxmd.com/read/29066044/iatrogenic-solid-tumors-following-immunosuppressive-therapy
#17
REVIEW
Kossivi Dantey, Liron Pantanowitz
Immunosuppression induced by chronic medication, such as occurs post-transplantation, may increase a patient's risk of developing solid tumors. These are often rare tumors characterized by odd presentations. This review focuses on commonly encountered iatrogenic, non-hematopoietic solid tumors following immunotherapy and provides a practical approach to their diagnosis. All of the malignancies covered in this review are viral-induced. They include human papillomavirus (HPV)-associated carcinomas, Epstein-Barr virus (EBV)-associated tumors, Merkel cell polyomavirus (MCPyV)-related Merkel cell carcinoma, and Human Herpesvirus 8 (HHV8)-related Kaposi sarcoma...
September 20, 2017: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/29065450/gammaherpesviral-tegument-proteins-pml-nuclear-bodies-and-the-ubiquitin-proteasome-system
#18
REVIEW
Florian Full, Alexander S Hahn, Anna K Großkopf, Armin Ensser
Gammaherpesviruses like Epstein-Barr virus (EBV) and Kaposi's sarcoma-associated herpesvirus (KSHV) subvert the ubiquitin proteasome system for their own benefit in order to facilitate viral gene expression and replication. In particular, viral tegument proteins that share sequence homology to the formylglycineamide ribonucleotide amidotransferase (FGARAT, or PFAS), an enzyme in the cellular purine biosynthesis, are important for disrupting the intrinsic antiviral response associated with Promyelocytic Leukemia (PML) protein-associated nuclear bodies (PML-NBs) by proteasome-dependent and independent mechanisms...
October 21, 2017: Viruses
https://www.readbyqxmd.com/read/29052141/murine-gammaherpesvirus-68-a-small-animal-model-for-gammaherpesvirus-associated-diseases
#19
Sihan Dong, J Craig Forrest, Xiaozhen Liang
Murine gammaherpesvirus 68 (MHV68) is a naturally occurring pathogen of murid rodents that is genetically related to the human gammaherpesviruses Epstein-Barr virus (EBV) and Kaposi sarcoma-associated herpesvirus (KSHV). Viral, immunologic, and disease parameters following experimental infection of laboratory mice with MHV68 closely resemble what occurs during primary EBV infection of humans, which suggests that MHV68 infection of mice offers a small animal model to study in general the pathogenesis of gammaherpesvirus infections...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29052133/ebv-infection-and-glucose-metabolism-in-nasopharyngeal-carcinoma
#20
Jun Zhang, Lin Jia, Chi Man Tsang, Sai Wah Tsao
To establish persistent infection in cells, viruses evolve strategies to alter host cellular pathways to regulate cell proliferation and energy metabolism which support viral infection. Epstein-Barr virus (EBV) undergoes both lytic and latent infection to achieve persistent and lifelong infection in human. EBV readily infects human B cells, driving their transformation to proliferative lymphoblastoid cell lines (LCL), and eventually establishes lifelong latent infection in memory B cells. In contrary, EBV undergoes lytic replication upon infection into normal epithelial cells which is essential for the replication of EBV genome and production of infectious viral particles for transmission through saliva...
2017: Advances in Experimental Medicine and Biology
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