نتایج جستجو برای: ویروس ابشتین بار ebv

تعداد نتایج: 56206  

Journal: :Revista da Associacao Medica Brasileira 2014
Larissa Santos Kátia Azevedo Licinio Silva Ledy Oliveira

OBJECTIVE The detection rate of Epstein-Barr virus (EBV) is higher in people living with human immunodeficiency virus (HIV). In an attempt to contribute to our epidemiological understanding of this coinfection and to investigate the activity of EBV in normal oral mucosa, we performed a cross-sectional study with HIV-positive patients. METHODS Oral smears from 145 HIV-positive patients were co...

2014
Tathiana Azevedo de Andrade Adriane Feijo Evangelista Antonio Hugo Froes Campos Wagner Augusto Poles Natalia Morais Borges Claudia Malheiros Coutinho Camillo Fernando Augusto Soares Jose Vassallo Roberto Pinto Paes Maria Claudia Zerbini Cristovam Scapulatempo Antonio Correa Alves Ken H. Young Gisele Wally Braga Colleoni

Currently, there is no characteristic microRNA (miRNA) expression pattern in Epstein-Barr virus+ diffuse large B-cell lymphoma of the elderly (EBV+DLBCLe). This study aims to characterize a signature profile and identify miRNAs that can be used as biomarkers and alternative therapeutic targets for EBV+DLBCLe. Seventy-one DLBCL patients aged 50 years and older were included and four EBV+ and fou...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2003
Csaba Kiss Jun Nishikawa Kenzo Takada Pankaj Trivedi George Klein Laszlo Szekely

We used a modified subtractive suppression hybridization to identify cellular genes that show altered expression in Burkitt lymphomas (BLs) in the presence of Epstein-Barr virus (EBV). Comparison of the gene expression patterns of an EBV-negative clone of the originally EBV-positive BL line Akata, with its Neo(R)-EBV derivative, revealed a significant difference in the expression of the T cell ...

2015
Kenneth O. Simbiri Nicholas A. Smith Richard Otieno Eric E. M. Wohlford Ibrahim I. Daud Sumba P. Odada Frank Middleton Rosemary Rochford

Epstein-Barr virus (EBV) is associated with Burkitt's lymphoma (BL), and in regions of sub-Saharan Africa where endemic BL is common, both the EBV Type 1 (EBV-1) and EBV Type 2 strains (EBV-2) are found. Little is known about genetic variation of EBV strains in areas of sub-Saharan Africa. In the present study, spontaneous lymphoblastoid cell lines (LCLs) were generated from samples obtained fr...

Journal: :Clinical cancer research : an official journal of the American Association for Cancer Research 2003
Edward W H To K C Allen Chan Sing-Fai Leung Lisa Y S Chan Ka-Fai To Anthony T C Chan Philip J Johnson Y M Dennis Lo

PURPOSE Circulating EBV DNA analysis has been shown to be valuable in the detection, prognostication, and monitoring of nasopharyngeal carcinoma (NPC) patients. A previous study has shown that, after radiotherapy, plasma EBV DNA levels of NPC patients would decline exponentially with a median half-life of 3.8 days. We postulate that this decline in plasma EBV DNA reflects the decrease in cancer...

ژورنال: تحقیقات دامپزشکی 2005
دکتر علی محمدی دکتر فرهید همت زاده دکتر محمدحسن بزرگمهری فرد دکتر هادی کیوانفر

هدف : هدف از این مطالعه تشخیص ویروس عامل بیماری مارک (MDV) به عنوان یکی از عوامل ویروسی تومورزا در احشای طیور با استفاده از واکنش زنجیره‌ای پلی مراز بود. نمونه‌ها : تعداد چهل نمونه خون از طیور تخمگذار 19 هفته فاقد علائم و 42 نمونه بافت توموری از طیور تجای اخذ گردید. روش : ابتدا استخراج DNA از نمونه‌های بافتی و خون به روش سیلیکاژل انجام گرفت. سپس آزمون PCR با استفاده از آغاز گرهای اختصاصی یک ر...

Journal: :Journal of virology 2013
Dai Iwakiri Takeharu Minamitani Mrinal Samanta

Epstein-Barr virus (EBV) is associated with various malignancies, including epithelial cancers. In this study, we analyzed the effect of EBV infection on epithelial cells by using EBV-converted epithelial cells. In EBV-positive cells, the extracellular signal-regulated kinase (ERK) pathway is constitutively activated. Inhibition of ERK activity leads to reduced anoikis resistance; therefore, EB...

حاجیلویی, مهرداد, حمیدی, مسعود, دهقان, آرش , شایانی نسب, محمد,

Background and purpose: The association of nasopharyngeal carcinoma (NPC) and Epstein-Barr virus (EBV) was firmly established as early as 1973. A clear understanding of its etiology is still lacking, but nasopharyngeal carcinoma is widely suspected to be the result of both a genetic susceptibility and exposure to environmental factors or Epstein-Barr virus infection. NPC is more prevalent in yo...

2004
Christian Münz

Epstein-Barr virus (EBV) nuclear antigen 1 (EBNA1)— the one EBV antigen that is expressed in all EBV-associated malignancies—has long been thought to go undetected by the cell-mediated immune system. However, recent studies show that EBNA1 can be presented to both CD4 ϩ and CD8 ϩ T cells, making it a potential new target for immunotherapy of EBV-related cancers. EBV, which infects Ͼ 90% of the ...

Journal: :The Journal of Experimental Medicine 1996
J F Lacerda M Ladanyi D C Louie J M Fernandez E B Papadopoulos R J O'Reilly

C.B-17 scid/scid (severe combined immunodeficiency [SCID]) mice inoculated with peripheral blood lymphocytes from Epstein-Barr virus (EBV)-seropositive donors, or with EBV-transformed lymphoblastoid B cell lines (EBV-LCL), develop lethal human EBV+ B cell lymphoproliferative disorders (EBV-LPD) with characteristics similar to those arising in immunodeficient patients. Using this model, we exami...

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