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https://www.readbyqxmd.com/read/28617757/looking-into-enteric-virome-in-patients-with-ibd-defining-guilty-or-innocence
#1
Susana Lopes, Patricia Andrade, Silvia Conde, Rodrigo Liberal, Cláudia C Dias, Salomão Fernandes, Jorge Pinheiro, Joana S Simões, Fátima Carneiro, Fernando Magro, Guilherme Macedo
BACKGROUND: Although there is some evidence suggesting that certain viruses may be involved in the onset of inflammatory bowel disease (IBD), data regarding viral prevalence and viral load in blood and mucosa of patients with IBD are scarce. The main aim of this study is to evaluate the prevalence and viral load of common Epstein-Barr virus (EBV), cytomegalovirus (CMV), and human herpes virus 6 in blood and mucosa of adult patients with endoscopic active IBD. METHODS: From January to December 2014, ulcerative colitis and Crohn's disease patients with active endoscopic disease were consecutively enrolled...
June 14, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28612032/genetics-and-molecular-biology-of-epstein-barr-virus-encoded-bart-microrna-a-paradigm-for-viral-modulation-of-host-immune-response-genes-and-genome-stability
#2
REVIEW
David H Dreyfus
Epstein-Barr virus, a ubiquitous human herpesvirus, is associated through epidemiologic evidence with common autoimmune syndromes and cancers. However, specific genetic mechanisms of pathogenesis have been difficult to identify. In this review, the author summarizes evidence that recently discovered noncoding RNAs termed microRNA encoded by Epstein-Barr virus BARF (BamHI A right frame) termed BART (BamHI A right transcripts) are modulators of human immune response genes and genome stability in infected and bystander cells...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28607398/epstein-barr-virus-induced-up-regulation-of-tcab1-is-involved-in-the-dna-damage-response-in-nasopharyngeal-carcinoma
#3
Kun Wang, Yichen Ge, Chao Ni, Bomiao Cui, Jintao Du, Bo Zhang, Xiaoyu Hu, Jiao Chen, Liying Xiao, Chongkui Sun, Yan Li
Telomerase Cajal body protein 1 (TCAB1), which is involved in Cajal body maintenance, telomere elongation and ribonucleoprotein biogenesis, has been linked to cancer predisposition, including nasopharyngeal carcinoma (NPC), due to its oncogenic properties. However, there are no specific reports to date on the functional relevance of TCAB1 and Epstein-Barr virus (EBV), which is considered to be a risk factor for NPC. In this study, we first examined NPC clinical tissues and found a notable overexpression of TCAB1 in EBV-positive specimens...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28604802/serological-profiling-of-the-ebv-immune-response-in-chronic-fatigue-syndrome-using-a-peptide-microarray
#4
Madlen Loebel, Maren Eckey, Franziska Sotzny, Elisabeth Hahn, Sandra Bauer, Patricia Grabowski, Johannes Zerweck, Pavlo Holenya, Leif G Hanitsch, Kirsten Wittke, Peter Borchmann, Jens-Ulrich Rüffer, Falk Hiepe, Klemens Ruprecht, Uta Behrends, Carola Meindl, Hans-Dieter Volk, Ulf Reimer, Carmen Scheibenbogen
BACKGROUND: Epstein-Barr-Virus (EBV) plays an important role as trigger or cofactor for various autoimmune diseases. In a subset of patients with Chronic Fatigue Syndrome (CFS) disease starts with infectious mononucleosis as late primary EBV-infection, whereby altered levels of EBV-specific antibodies can be observed in another subset of patients. METHODS: We performed a comprehensive mapping of the IgG response against EBV comparing 50 healthy controls with 92 CFS patients using a microarray platform...
2017: PloS One
https://www.readbyqxmd.com/read/28601671/ebv-infection-and-msi-status-significantly-influence-the-clinical-outcomes-of-gastric-cancer-patients
#5
Hua Shen, Meizuo Zhong, Weili Wang, Ping Liao, Xianli Yin, Daniel Rotroff, Todd C Knepper, Howard L Mcleod, Chengfang Zhou, Shangchen Xie, Wei Li, Biaobo Xu, Yijing He
BACKGROUND: Epstein-Barr virus (EBV) and microsatellite instability (MSI) are associated with the carcinogenesis of many kinds of tumors, including gastric cancer (GC). However, the impact of EBV and MSI status on the prognosis of stage II and III GC is still unclear. The aim of this study was to find out the prognostic value of EBV and MSI status in a population of GC patients from Southern China. METHODS: Patients were genotyped for EBV infection based on the detection of EBV DNA from the formalin-fixed paraffin-embedded (FFPE) specimens...
June 7, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28597982/a-rare-case-of-epstein-barr-virus-associated-early-gastric-cancer-with-multiple-synchronous-intramucosal-lesions
#6
Katsuyuki Murai, Naomi Kakushima, Kimihide Kusafuka
Epstein-Barr virus-associated gastric cancer (EBV-GC) accounts for 8.7% of gastric cancer.(1) EBV-GC is associated with lower prevalence of lymph node metastasis (LNM), and better prognosis.(1-3) However, little is known regarding intramucosal EBV-GC. We report a case of multiple synchronous lesions of intramucosal EBV-GC. This article is protected by copyright. All rights reserved.
June 9, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28588701/aberrant-expression-of-aid-and-aid-activators-of-nf-%C3%AE%C2%BAb-and-pax5-is-irrelevant-to-ebv-associated-gastric-cancers-but-is-associated-with-carcinogenesis-in-certain-ebv-non-associated-gastric-cancers
#7
Takashi Mohri, Keiko Nagata, Satoshi Kuwamoto, Michiko Matsushita, Hirotsugu Sugihara, Masako Kato, Yasushi Horie, Ichiro Murakami, Kazuhiko Hayashi
Epstein-Barr virus-associated gastric carcinoma (EBVaGC) is a distinct subtype of gastric cancer characterized by clinicopathological features including lymphoepithelioma-like histology. Aberrant expression of activation-induced cytidine deaminase (AID) as a genomic modulator was demonstrated through pathogen-related nuclear factor κB (NF-κB) signaling in Helicobacter pylori-associated gastric cancer. To elucidate whether or not AID expression is relevant to carcinogenesis in EBVaGC, immunohistochemical expression of AID and AID-regulatory factors between EBVaGC and EBV-non-associated gastric carcinoma (GC) were evaluated, each using 15 cases of GC with lymphoid stroma (GCLS) and other types of GC...
June 2017: Oncology Letters
https://www.readbyqxmd.com/read/28584793/clinical-significance-of-p53-protein-expression-beta-catenin-expression-and-her2-expression-for-epstein-barr-virus-associated-gastric-cancer
#8
Dong Won Baek, Byung Woog Kang, Soyoon Hwang, Jong Gwang Kim, An Na Seo, Han Ik Bae, Oh Kyoung Kwon, Seung Soo Lee, Ho Young Chung, Wansik Yu
This study assessed the expression of the p53 protein, beta-catenin, and HER2 and their prognostic implications in patients with EBV-associated gastric cancer (EBVaGC). After reviewing 1318 consecutive cases of surgically resected or endoscopic submucosal dissected gastric cancers, 117 patients were identified as EBV-positive using EBV-encoded RNA in-situ hybridization. The immunohistochemistry results were interpreted as follows: strong p53 nuclear expression in at least 50% of tumor nuclei was interpreted as a positive result, strong beta-catenin expression in at least 10% of cytoplasmic nuclei was interpreted as a positive result, and moderate or strong complete or basolateral membrane staining in 10% of tumor cells was interpreted as a positive result for HER2...
May 2017: Chonnam Medical Journal
https://www.readbyqxmd.com/read/28581676/comprehensive-genomic-profiling-of-different-subtypes-of-nasopharyngeal-carcinoma-reveals-similarities-and-differences-to-guide-targeted-therapy
#9
Siraj M Ali, Ming Yao, Jicheng Yao, Jing Wang, Yuwei Cheng, Alexa B Schrock, Gung-Wei Chirn, Hui Chen, Shuo Mu, Laurie Gay, Julia A Elvin, James Suh, Vincent A Miller, Philip J Stephens, Jeffrey S Ross, Kai Wang
BACKGROUND: To date, no targeted therapy has been approved for nasopharyngeal carcinoma (NPC), and this underscores the need for an in-depth understanding of clinically relevant genomic alterations (CRGAs). METHODS: Comprehensive genomic profiling was performed for 190 NPC patients, including 20 patients with nasopharyngeal adenocarcinoma (NPAC), 62 patients with nasopharyngeal squamous cell carcinoma (NPSCC), and 108 patients with nasopharyngeal undifferentiated carcinoma (NPUC)...
June 5, 2017: Cancer
https://www.readbyqxmd.com/read/28575863/differentiated-tumor-immune-microenvironment-of-epstein-barr-virus-associated-and-negative-gastric-cancer-implication-in-prognosis-and-immunotherapy
#10
Jing Ma, Jianhui Li, Yiming Hao, Yongzhan Nie, Zengshan Li, Meirui Qian, Qiaoyi Liang, Jun Yu, Musheng Zeng, Kaichun Wu
Epstein-Barr virus-associated gastric cancer (EBVaGC) has been proposed to be a distinct subtype with a specific immune microenvironment. Here, we evaluated tumor-infiltrating T-cell subsets and the expression of programmed cell death protein 1 (PD-1) and programmed death-ligand 1 (PD-L1) in 571 gastric cancers (GCs).Tissue microarrays were stained using EBER in situ hybridization for EBV and using immunohistochemistry for CD4, CD8, Foxp3, PD-1 and PD-L1. GCs were categorized into four types based on CD8+ infiltration and PD-L1 expression...
May 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28573642/aberrant-gene-promoter-methylation-of-e-cadherin-p16-ink4a-p14-arf-and-mgmt-in-epstein-barr-virus-associated-oral-squamous-cell-carcinomas
#11
Ati Burassakarn, Chamsai Pientong, Nuchsupha Sunthamala, Jureeporn Chuerduangphui, Patravoot Vatanasapt, Natcha Patarapadungkit, Bunkerd Kongyingyoes, Tipaya Ekalaksananan
The etiology of oral carcinogenesis appears to be multifactorial. There is emerging evidence of the presence of Epstein-Barr virus (EBV) in epithelial oral squamous cell carcinoma (OSCC), but an association of EBV with oral carcinogenesis has not yet been established. Although epigenetic alterations, such as aberrant DNA methylation, are known to contribute to the pathogenesis of oral cancer, the relationship of such alterations with EBV infection is little known. This study aimed to investigate the association between EBV infection and promoter methylation patterns of tumor-associated genes in OSCC tissues...
July 2017: Medical Oncology
https://www.readbyqxmd.com/read/28573357/clinical-significance-of-overexpression-of-nrg1-and-its-receptors-her3-and-her4-in-gastric-cancer-patients
#12
Sumi Yun, Jiwon Koh, Soo Kyung Nam, Jung Ok Park, Sung Mi Lee, Kyoungyul Lee, Kyu Sang Lee, Sang-Hoon Ahn, Do Joong Park, Hyung-Ho Kim, Gheeyoung Choe, Woo Ho Kim, Hye Seung Lee
BACKGROUND: Neuregulin 1 (NRG1), a ligand for human epidermal growth factor (HER) 3 and HER4, can activates cell signaling pathways to promote carcinogenesis and metastasis. METHODS: To investigate the clinicopathologic significance of NRG1 and its receptors, immunohistochemistry was performed for NRG1, HER3, and HER4 in 502 consecutive gastric cancers (GCs). Furthermore, HER2, microsatellite instability (MSI), and Epstein-Barr virus (EBV) status were investigated...
June 1, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28572837/serum-ebv-antibodies-and-lmp-1-in-polish-patients-with-oropharyngeal-and-laryngeal-cancer
#13
Sylwia Fołtyn, Małgorzata Strycharz-Dudziak, Bartłomiej Drop, Anastazja Boguszewska, Małgorzata Polz-Dacewicz
BACKGROUND: The association between Epstein-Barr virus (EBV) and the development of head and neck cancer was reported by many researchers. The aim of the present study was to detect EBV DNA and EBV antibodies in 110 Polish patients with oropharyngeal and laryngeal cancer compared to 40 healthy individuals. METHODS: Frozen tumor tissue fragments were tested using nested PCR assay for EBV DNA detection. Sera from all individuals were investigated using ELISA tests to detect the presence of VCA IgM and IgG, EBNA IgG, EA IgG...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28571582/the-150-most-important-questions-in-cancer-research-and-clinical-oncology-series-questions-31-39-edited-by-chinese-journal-of-cancer
#14
EDITORIAL
(no author information available yet)
To accelerate our endeavors to overcome cancer, Chinese Journal of Cancer has launched a program of publishing 150 most important questions in cancer research and clinical oncology. In this article, 9 more questions are presented as follows. Question 31: How does aging process inhibit the formation of sarcoma? Question 32: Is intratumoral morphological heterogeneity the consequence of tumor genomic instability or the cause of aggressive tumor behavior? Can we identify more aggressive tumors by computationally analyzing the morphological heterogeneity of the tumor tissues? Question 33: How to pre-surgically differentiate irradiation-induced ulceration from cancerous ulceration? Question 34: Why is epidermal growth factor receptor (EGFR) 19 Del-positive tumor more sensitive to targeted therapy than EGFR 21 L858R-positive tumor in patients with non-small cell lung cancer? Question 35: Can an Epstein-Barr virus vaccine be developed to reduce the incidence of EBV-related malignancies? Question 36: What is the unique feature in sarcoma vasculature that causes the intrinsic resistance of sarcoma against anti-angiogenic therapy? Question 37: How many ways can sarcoma cells protect themselves from the attacks of cytotoxic drugs? Question 38: How stable does the tumor heterogeneity remain along with cytotoxic chemotherapy? Question 39: How to generate a prognostic classifier for diffuse low-grade gliomas by integrating genetic and epigenetic signatures with histological features?...
June 2, 2017: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/28571118/the-role-of-oxidative-stress-in-ebv-lytic-reactivation-radioresistance-and-the-potential-preventive-and-therapeutic-implications
#15
REVIEW
Jianmin Hu, Hongde Li, Xiangjian Luo, Yueshuo Li, Ann Bode, Ya Cao
Epstein-Barr virus (EBV) is an important cancer causing virus. Cancer associated with EBV account for approximately 1.5% of all cancers, and represent 1.8% of all cancer deaths worldwide. EBV reactivation plays an important role in the development of EBV-related diseases and is closely related with patients' survival and clinical stages of EBV-related cancers. The therapy regarding to EBV-related cancers is very urgent, especially in endemic areas. Generating oxidative stress is a critical mechanism by which host cells defend against infection by virus...
June 1, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28562354/circulating-pre-treatment-epstein-barr-virus-dna-as-prognostic-factor-in-locally-advanced-nasopharyngeal-cancer-in-a-non-endemic-area
#16
Salvatore Alfieri, Nicola Alessandro Iacovelli, Sara Marceglia, Irene Lasorsa, Carlo Resteghini, Francesca Taverna, Arabella Mazzocchi, Ester Orlandi, Marco Guzzo, Roberto Bianchi, Diana Fanti, Laura Pala, Sara Racca, Roee Dvir, Pasquale Quattrone, Annunziata Gloghini, Chiara Costanza Volpi, Roberta Granata, Cristiana Bergamini, Laura Locati, Lisa Licitra, Paolo Bossi
The prognostic value of pre-treatment Epstein-Barr Virus (EBV) DNA viral load for non-endemic, locally-advanced, EBV-related nasopharyngeal cancer (NPC) patients is yet to be defined. All patients with EBV encoded RNA (EBER)-positive NPC treated at our Institution from 2005 to 2014 with chemotherapy (CT) concurrent with radiation (RT) +/- induction chemotherapy (ICT) were retrospectively reviewed. Pre-treatment baseline plasma EBV DNA (b-EBV DNA) viral load was detected and quantified by PCR. Median b-EBV DNA value was correlated to potential influencing factors by univariate analysis...
May 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28562165/her-2-epstein-barr-virus-crosstalk-in-human-gastric-carcinogenesis-a-novel-concept-of-oncogene-oncovirus-interaction
#17
Farhan S Cyprian, Noor Al-Antary, Ala-Eddin Al Moustafa
Gastric cancer is the fourth most common cancer and the second leading cause of cancer deaths worldwide. Additionally, it is well-known that metastatic cancer disease is a major cause of morbidity and mortality in cancer patients. Several investigations reported that HER-2 (ErbB-2 receptor) and Epstein-Barr virus (EBV) are important aetiological factors in human gastric cancer, where either oncogene/oncovirus alone can derive a major event of cancer progression and metastasis via epithelial-mesenchymal transition (EMT)...
May 31, 2017: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/28561677/immunotherapy-for-esophageal-and-gastric-cancer
#18
Ronan J Kelly
PD-L1 upregulation occurs in approximately 40% of gastroesophageal cancers. However, unlike other solid tumors, there is minimal PD-L1 expressed on the cancer cells; rather, expression occurs predominantly on infiltrating myeloid cells. Preliminary clinical data involving single-agent PD-1/PD-L1 inhibitors in metastatic gastroesophageal cancer have reported response rates of 22%-27% for patients with PD-L1(+) tumors and 10%-17% for unselected patients. The phase III ONO-4538-12 (ATTRACTION 2) trial has demonstrated an improved overall survival for nivolumab compared with placebo for patients with heavily pretreated gastric cancer...
2017: American Society of Clinical Oncology Educational Book
https://www.readbyqxmd.com/read/28561270/barriers-to-generating-pdx-models-of-hpv-related-head-and-neck-cancer
#19
Nicole D Facompre, Varun Sahu, Kathleen T Montone, Kayla M Harmeyer, Hiroshi Nakagawa, Anil K Rustgi, Gregory S Weinstein, Phyllis A Gimotty, Devraj Basu
OBJECTIVES/HYPOTHESIS: Delineate factors impacting the creation and use of patient-derived xenografts (PDXs) of human papilloma virus-related (HPV+) head and neck squamous cell carcinomas (HNSCCs). STUDY DESIGN: Laboratory-based translational study. METHODS: Fifty-one surgically resected HNSCCs, including 31 HPV + cancers, were implanted into NOD/SCID/IL-2Rγ(-/-) (NSG) mice using standardized methodology. Clinical and pathologic factors were tested for association with engraftment...
May 31, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28557749/cancer-risk-after-pediatric-solid-organ-transplantation
#20
Elizabeth L Yanik, Jodi M Smith, Meredith S Shiels, Christina A Clarke, Charles F Lynch, Amy R Kahn, Lori Koch, Karen S Pawlish, Eric A Engels
BACKGROUND: The effects of pediatric solid organ transplantation on cancer risk may differ from those observed in adult recipients. We described cancers in pediatric recipients and compared incidence to the general population. METHODS: The US transplant registry was linked to 16 cancer registries to identify cancer diagnoses among recipients <18 years old at transplant. Standardized incidence ratios (SIRs) were estimated by dividing observed cancer counts among recipients by expected counts based on the general population rates...
May 2017: Pediatrics
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