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https://www.readbyqxmd.com/read/28339079/a-p110%C3%AE-specific-inhibitor-combined-with-bortezomib-blocks-drug-resistance-properties-of-ebv-related-b-cell-origin-cancer-cells-via-regulation-of-nf-%C3%AE%C2%BAb
#1
Ga Bin Park, Yoon Hee Chung, Jee-Yeong Jeong, Daejin Kim
Epstein-Barr virus (EBV) infection is closely related to carcinogenesis of various cancers, and is also associated with the development of drug resistance in cancer stem cells. However, in EBV-positive cancer cells, the mechanistic details of the downstream signaling and the connection of PI3K with the NF-κB pathway for development of drug resistance remain controversial. Diffuse large B-cell lymphoma (DLBCL) and multiple myeloma (MM) cells infected by EBV display drug resistance-related proteins (MDR1, MRP1 and MRP2) and stem cell markers (OCT4 and SOX2)...
March 21, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28325354/solitary-plasmacytoma-associated-with-epstein-barr-virus-a-clinicopathologic-cytogenetic-study-and-literature-review
#2
Jiaqi Yan, Jianchao Wang, Wenyan Zhang, Min Chen, Jie Chen, Weiping Liu
Solitary plasmacytoma (SP) is an uncommon, indolent tumor of plasma cell neoplasms that presents as a mass lesion in extramedullary sites. Evidence of Epstein-Barr virus (EBV) infection is frequently associated with various lymphatic and hematopoietic malignancies but is relatively rare in SP. Moreover, it is essential to distinguish EBV-positive plasmacytoma from plasmablastic lymphoma. In this study, we found 4 EBV-encoded RNA (EBER)-positive patients among 46 consecutive immunocompetent patients of SP and compared the clinicopathologic features of these patients with those of the EBER-negative cohort...
April 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28320703/case-of-lymphadenopathy-with-lytic-bone-lesions
#3
Siddhesh Arun Kalantri, Uttam Kumar Nath, Debasis Banerjee, Maitreyee Bhattacharyya
Plasmablastic lymphoma, a rare highly aggressive non-Hodgkin's lymphoma subtype, often associated with HIV infection, is a close differential diagnosis of plasmablastic myeloma. The 2 conditions may be morphologically and immunophenotypically identical. However, differentiating between the 2 conditions is critical for adequate patient management. Herein, we describe an unusual case of plasmablastic myeloma with biclonal gammopathy which was initially diagnosed as plasmablastic lymphoma based on lymph node biopsy and immunohistochemistry (IHC) results...
March 20, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28249941/plasmablastic-lymphoma-versus-plasmablastic-myeloma-an-ongoing-diagnostic-dilemma
#4
Janice S Ahn, Ryan Okal, Jeffrey A Vos, Matthew Smolkin, Abraham S Kanate, Flavia G Rosado
AIMS: To determine the utility of clinical, morphological and phenotypical features in the differential diagnosis of plasmablastic lymphoma and myeloma with plasmablastic features. METHODS: All plasmablastic neoplasms identified from a 15-year retrospective search were reviewed and classified into 'lymphoma', 'myeloma' or 'indeterminate'. The classification was then compared with the previously established clinical diagnosis. Lessons learned from this review were used to design a diagnostic algorithm for pathologists to use in the absence of known clinical history...
March 1, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28235985/-spontaneous-remission-of-hcv-infection-after-autologous-stem-cell-transplantation-in-a-58-year-old-man
#5
L Reinhardt, H Eiffert, G Wulf, P Ströbel, S C B Bremer, A Amanzada, V Ellenrieder, A Neesse
We report about a 58-year-old man with a chronic and treatment-naive hepatitis C virus (HCV) infection of genotype 1b, who had undergone autologous stem cell transplantation twice due to multiple myeloma. Subsequently, a high-level viremic reactivation of an occult hepatitis B virus (HBV) infection and also a reverse seroconversion was observed. Furthermore, a sustained spontaneous remission of HCV infection was seen. Antiviral therapy of HBV infection was initiated with tenofovir. Seven months after therapy initiation, the patient acquired an "anti-HBc-only" status...
February 24, 2017: Der Internist
https://www.readbyqxmd.com/read/28228086/clinical-trials-with-oncolytic-measles-virus-current-status-and-future-prospects
#6
Pavlos Msaouel, Mateusz Opyrchal, Angela Dispenzieri, Kah Whye Peng, Mark J Federspiel, Stephen J Russell, Evanthia Galanis
Attenuated Edmonston lineage measles virus (MV-Edm) vaccine strains can preferentially infect and lyse a wide variety of cancer cells. Oncolytic MV-Edm derivatives genetically engineered to expressed the human carcinoembryonic antigen (MV-CEA virus) or the human sodium iodide symporter (MV-NIS virus) and are currently being tested in clinical trials against ovarian cancer, glioblastoma multiforme, multiple myeloma, mesothelioma, head and neck cancer, breast cancer and malignant peripheral nerve sheath tumors...
February 22, 2017: Current Cancer Drug Targets
https://www.readbyqxmd.com/read/28226184/cd117-kit-is-a-useful-marker-in-the-diagnosis-of-plasmablastic-plasma-cell-myeloma
#7
Etan Marks, Yang Shi, Yanhua Wang
AIMS: Plasmablastic plasma cell myeloma (PPCM) is a rare morphological presentation of multiple myeloma and can resemble plasmablastic lymphoma (PBL), an HIV related lymphoid neoplasm, morphologically and immunophenotypically. We retrospectively searched for factors that could help differentiate these two entities. METHODS: We used Clinical Looking Glass (CLG), a data mining tool, to identify patients with a diagnosis of either PPCM or PBL with a CD117 test performed...
February 22, 2017: Histopathology
https://www.readbyqxmd.com/read/28147366/what-should-be-done-in-inflammatory-bowel-disease-patients-with-prior-malignancy
#8
REVIEW
Jacques Cosnes
BACKGROUND: Treatment of inflammatory bowel disease (IBD) in patients with prior malignancy is challenging because therapeutic immunosuppression required for controlling IBD activity may increase the risk of cancer recurrence. Key Messages: Contrary to the observations in the post-transplant population, retrospective observational studies of IBD patients with prior malignancy have not demonstrated that immunosuppressive drugs increased significantly the risk of new or recurrent cancer...
2017: Digestive Diseases
https://www.readbyqxmd.com/read/28063964/impact-of-hepatitis-b-core-antibody-seropositivity-on-the-outcome-of-autologous-hematopoietic-stem-cell-transplantation-for-multiple-myeloma
#9
Ankur Varma, Laura Biritxinaga, Rima M Saliba, Maximilian Stich, Sarah Francesca Jauch, Aimaz Afrough, Medhavi Honhar, Uday R Popat, Mehnaz A Shafi, Nina Shah, Qaiser Bashir, Yvonne Dinh, Chitra Hosing, Richard E Champlin, Muzaffar H Qazilbash
Hepatitis B core antibody (HBcAb) seropositivity has been associated with a higher rate of hepatitis B virus (HBV) reactivation after chemotherapy, even in patients who are hepatitis B surface antigen (HBsAg) negative. However, little is known about the risk of HBV reactivation after autologous hematopoietic stem cell transplantation (auto-HCT). We evaluated the incidence of HBV reactivation, liver toxicity, and survival in patients with multiple myeloma (MM) who received auto-HCT at our institution. We retrospectively identified 107 MM patients with resolved HBV infection (HBcAb positive, HBsAg negative) and 125 patients with negative HBV serology (control subjects) who were matched for age, timing of auto-HCT from diagnosis, cytogenetics, disease status at transplant, induction therapy, and preparative regimen...
January 4, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/27933316/systemic-therapy-with-oncolytic-myxoma-virus-cures-established-residual-multiple-myeloma-in-mice
#10
Eric Bartee, Mee Y Bartee, Bjarne Bogen, Xue-Zhong Yu
Multiple myeloma is an incurable malignancy of plasma B-cells. Traditional chemotherapeutic regimes often induce initial tumor regression; however, virtually all patients eventually succumb to relapse caused by either reintroduction of disease during autologous transplant or expansion of chemotherapy resistant minimal residual disease. It has been previously demonstrated that an oncolytic virus known as myxoma can completely prevent myeloma relapse caused by reintroduction of malignant cells during autologous transplant...
2016: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/27863756/herpes-zoster-after-autologous-hematopoietic-stem-cell-transplantation
#11
Kelli Borges Dos Santos, Rafaela Souto E Souza, Angelo Atalla, Abrahão Elias Hallack-Neto
BACKGROUND: The autologous hematopoietic stem cell transplantation procedure involves immunosuppression of the patient. Thus, the patient has an elevated risk for several diseases, such as infections with the varicella-zoster virus. Prevention protocols have been proposed based on the use of acyclovir from the first day of conditioning, and maintaining this drug for 30-100 days after the procedure or for as much as one year. The objective of this work was to evaluate the incidence of herpes zoster after autologous transplantations related to the early suspension of acyclovir...
October 2016: Revista Brasileira de Hematologia e Hemoterapia
https://www.readbyqxmd.com/read/27782084/measles-to-the-rescue-a-review-of-oncolytic-measles-virus
#12
REVIEW
Sarah Aref, Katharine Bailey, Adele Fielding
Oncolytic virotherapeutic agents are likely to become serious contenders in cancer treatment. The vaccine strain of measles virus is an agent with an impressive range of oncolytic activity in pre-clinical trials with increasing evidence of safety and efficacy in early clinical trials. This paramyxovirus vaccine has a proven safety record and is amenable to careful genetic modification in the laboratory. Overexpression of the measles virus (MV) receptor CD46 in many tumour cells may direct the virus to preferentially enter transformed cells and there is increasing awareness of the importance of nectin-4 and signaling lymphocytic activation molecule (SLAM) in oncolysis...
October 22, 2016: Viruses
https://www.readbyqxmd.com/read/27748826/mir-203-inhibits-cell-growth-and-regulates-g1-s-transition-by-targeting-bmi-1-in-myeloma-cells
#13
Shun-Quan Wu, Wen-Yan Niu, Ya-Ping Li, Hao-Bo Huang, Rong Zhan
The oncogene B-cell-specific Moloney murine leukemia virus insertion site‑1 (Bmi‑1) is overexpressed in multiple myeloma (MM). Our previous study demonstrated that Bmi‑1 silencing sensitized MM cells to bortezomib. Translational regulation has emerged as a prominent underlying mechanism of Bmi‑1 regulation, particularly via microRNA targeting. The present study determined that Bmi‑1 may be directly targeted by miR‑203 using a luciferase assay. In addition, enforced expression of miR-203 led to significant downregulation of Bmi‑1 protein and mRNA expression levels...
November 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27618297/hepatitis-b-virus-reactivation-after-autologous-haematopoietic-stem-cell-transplantation-in-a-hepatitis-b-urface-antigen-negative-patient
#14
M S Dal, A Doğan, A Karakuş, T Dal, M Kaya, O Ayyıldız
A 58-year-old female patient whose serological test results were Hepatitis B surface antigen (HBsAg) negative and Hepatitis B surface antibody (HBsAb) positive, diagnosed with Multiple myeloma. Autologous haematopoietic stem-cell transplantation was subsequently performed after induction chemotherapy. One-year later the patient was diagnosed as Hepatitis B Virus (HBV) reactivation and was started on lamivudine oral therapy. Hepatitis B surface antigen (HBsAg) negative is negative and HBsAb is positive in patients scheduled for chemotherapy, HBV DNA levels should still be investigated...
February 22, 2016: West Indian Medical Journal
https://www.readbyqxmd.com/read/27595249/-nosocomial-pneumonia-in-patients-with-haematological-malignancies
#15
Lucía Martínez-Hernández, Diana Vilar-Compte, Patricia Cornejo-Juárez, Patricia Volkow-Fernández
INTRODUCTION: Nosocomial pneumonia (NP) in patients with hematological malignancies (HM) has an attributable mortality over 90%. There are few studies that report the incidence of nosocomial infections in patients with HM. OBJECTIVE: To describe the epidemiology and clinical course of NP in a cohort of patients with hematologic malignancies. MATERIAL AND METHODS: Single-center study of patients with leukemia, lymphoma or multiple myeloma diagnosed with NP, hospitalized between January 2011 and December 2012...
July 2016: Gaceta Médica de México
https://www.readbyqxmd.com/read/27564460/pim2-is-important-for-regulating-dna-damage-response-in-multiple-myeloma-cells
#16
J Ramachandran, L Santo, K T Siu, C Panaroni, N Raje
Pan proviral integrations of Moloney virus (PIM) inhibition in multiple myeloma (MM) results in reduced cell viability in tested human-derived MM cell lines and reduces tumor burden in xenograft mouse models, making PIMs important therapeutic targets for the disease. PIM kinase inhibitors are currently being tested clinically in MM. We sought to elucidate the role of the various PIMs in MM. Our data demonstrate that Pim2 has a significant role in MM cell cytotoxicity. Our data provide evidence for a novel role for Pim2 in the regulation of the DNA damage response (DDR)...
2016: Blood Cancer Journal
https://www.readbyqxmd.com/read/27552933/combined-expression-of-mir-34a-and-smac-mediated-by-oncolytic-vaccinia-virus-synergistically-promote-anti-tumor-effects-in-multiple-myeloma
#17
Wen Lei, Shibing Wang, Chunmei Yang, Xianbo Huang, Zhenzhen Chen, Wei He, Jianping Shen, Xinyuan Liu, Wenbin Qian
Despite great progress made in the treatment of multiple myeloma (MM), it is still incurable. Promising phase II clinical results have been reported recently for oncolytic vaccinia virus (OVV) clinic therapeutics. One reason for this has focused on the critical therapeutic importance of the immune response raised by these viruses. However, few studies have performed their applications as an optimal delivery system for therapeutic gene, especially miRNA in MM. In this study, we constructed two novel OVVs (TK deletion) that express anti-tumor genes, miR-34a and Smac, respectively, in MM cell lines and xenograft model...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27529971/-meningococcal-septicemia-revealing-multiple-myeloma-a-case-report
#18
Risturo Arakawa, Nobuaki Mori, Narito Kagawa, Akiko Higuchi, Masashi Tanaka, Yasuko Aoki, Shiko Seki, Ryo Suzuki
Meningococcal infection is among the most devastating diseases. It is rarely seen in Japan. However, several environmental and host factors have been associated with increased risks of Neisseria meningitidis infection. We present a case of invasive N. meningitidis infection that revealed the presence of multiple myeloma. A 55-year-old Japanese man was admitted with fever and altered consciousness. He was sent to the intensive care unit for septic shock and disseminated intravascular coagulation. In addition to standard septic shock and multiple organ failure treatment, polymyxin-B immobilized column direct hemoperfusion was performed...
May 2016: Kansenshōgaku Zasshi. the Journal of the Japanese Association for Infectious Diseases
https://www.readbyqxmd.com/read/27512301/epstein-barr-virus-positive-multiple-myeloma-following-an-abo-incompatible-second-renal-transplantation
#19
B Kirushnan, B Subbarao, P Prabhu
ABO incompatible kidney transplant recipients receive higher dose of immunosuppression. Previous data indicate that the incidence of malignancy is not higher in these patients. Compared to the general population, renal transplant recipients are at 4.4-fold higher risk of developing myeloma. We describe a case of posttransplant multiple myeloma in an ABO incompatible renal transplant recipient of a second graft.
July 2016: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/27488004/a-clinicopathological-study-of-primary-central-nervous-system-lymphomas-their-association-with-epstein-barr-virus
#20
Mehar Chand Sharma, Rakesh Kumar Gupta, Seema Kaushal, Vaishali Suri, Chitra Sarkar, Manmohan Singh, S S Kale, Ranjit K Sahoo, Lalit Kumar, Vinod Raina
BACKGROUND & OBJECTIVES: Primary central nervous system lymphomas (PCNSLs) are relatively uncommon, accounting for 2-3 per cent of primary brain tumours. Majority of these are diffuse large B cell lymphomas (DLBCL) occurring both in immunocompromised and immunocompetent patients. We undertook this study to classify PCNSL into germinal centre (GC) and non-germinal centre (NGC) type based on Hans classification and to find the role of Epstein-Barr virus (EBV) in pathogenesis both by conventional immunohistochemistry (IHC) and chromogenic in situ hybridization (CISH)...
May 2016: Indian Journal of Medical Research
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