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Lymphomas, AIDS-Related lymphomas,

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https://www.readbyqxmd.com/read/29043230/advances-in-the-treatment-of-newly-diagnosed-primary-central-nervous-system-lymphomas
#1
REVIEW
Liren Qian, Ciprian Tomuleasa, Ioan-Alexandru Florian, Jianliang Shen, Ioan-Stefan Florian, Mihnea Zdrenghea, Delia Dima
Primary central nervous system lymphoma (PCNSL) is a type of highly invasive non-Hodgkin lymphoma. With a growing number of organ transplantation and immunosuppressant therapy, the incidence of PCNSL has been growing rapidly in recent years, which is attributed to the increased incidence of HIV/AIDS, a prominent risk factor for developing PCNSL. The rising rate of PCNSL incidence is the highest among the intracranial tumors. In the past 20 years, dozens of clinical trials related to PCNSL have been registered, but adequate therapeutics are still challenging...
September 2017: Blood Research
https://www.readbyqxmd.com/read/29018505/head-and-neck-lymphomas-in-hiv-patients-a-clinical-perspective
#2
REVIEW
Natsuki Oishi, José Vicente Bagán, Karla Javier, Enrique Zapater
Introduction  Because of the many HIV-related malignancies, the diagnosis and treatment of lymphoma in patients infected with human immunodeficiency virus are challenging. Objective  Here, we review current knowledge of the pathogenesis, epidemiology, symptomatology, diagnosis, and treatment of head and neck lymphomas in HIV patients from a clinical perspective. Data Synthesis  Although Hodgkin's lymphoma is not an AIDS-defining neoplasm, its prevalence is ten times higher in HIV patients than in the general population...
October 2017: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/28978712/full-length-isoforms-of-kshv-lana-accumulate-in-the-cytoplasm-of-cells-undergoing-the-lytic-cycle-of-replication
#3
H Jacques Garrigues, Kellie Howard, Serge Barcy, Minako Ikoma, Ashlee V Moses, Gail H Deutsch, David Wu, Keiji Ueda, Timothy M Rose
The latency-associated nuclear antigen (LANA) of the Kaposi sarcoma herpesvirus (KSHV) performs a variety of functions to establish and maintain KSHV latency. During latency, LANA localizes to discrete punctate spots in the nucleus where it tethers viral episomes to cellular chromatin and interacts with nuclear components to regulate cellular and viral gene expression. Using highly sensitive tyramide signal amplification (TSA), we determined that LANA localizes to the cytoplasm in different cell types undergoing the lytic cycle of replication after de novo primary infection and after spontaneous, TPA-, or ORF50/RTA-induced activation...
October 4, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28959124/higher-expression-of-activation-induced-cytidine-deaminase-is-significantly-associated-with-merkel-cell-polyomavirus-negative-merkel-cell-carcinomas
#4
Michiko Matsushita, Takeshi Iwasaki, Daisuke Nonaka, Satoshi Kuwamoto, Keiko Nagata, Masako Kato, Yukisato Kitamura, Kazuhiko Hayashi
BACKGROUND: Merkel cell carcinomas (MCCs), clinically aggressive neuroendocrine skin cancers, are divided into Merkel cell polyomavirus (MCPyV)-positive and -negative tumors, which show different clinicopathological features and may develop through different mechanisms of carcinogenesis. Aberrant expression of activation-induced cytidine deaminase (AID) as a genomic modulator was demonstrated through pathogen-related NF-κB signal in Helicobacter pylori-associated gastric cancer, adult T cell leukemia/lymphoma (HTLV-1), hepatoma (HCV), and Burkitt lymphoma (EBV)...
September 2017: Yonago Acta Medica
https://www.readbyqxmd.com/read/28920509/diagnosis-of-hyponatremia-and-increased-risk-of-a-subsequent-cancer-diagnosis-results-from-a-nationwide-population-based-cohort-study
#5
Louise Holland-Bill, Christian Fynbo Christiansen, Dóra Körmendiné Farkas, Frede Donskov, Jens Otto L Jørgensen, Henrik Toft Sørensen
BACKGROUND: Hyponatremia has recently been associated with subsequent cancer risk. This population-based nationwide study assessed whether the diagnosis of hyponatremia can predict a cancer diagnosis within most common cancers. MATERIAL AND METHODS: Using Danish medical registries, we identified 16,220 patients with a first-time diagnosis of hyponatremia, without a cancer diagnosis, from January 2006 through November 2013. We quantified the relative risk of a subsequent cancer diagnosis by standardized incidence ratios (SIRs), comparing observed cancer incidence among patients diagnosed with hyponatremia to that expected, based on national cancer incidence during that period...
September 18, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28900786/the-pattern-of-secondary-cancers-in-patients-with-kaposi-sarcoma-in-the-united-states
#6
Vivek Kumar, Mohit Garg, Neha Chaudhary, Parita Soni, Charalampos S Floudas, Chiemeziem Nwanyanwu, Abhinav Chandra
PURPOSE: In the U.S., Kaposi sarcoma (KS) occurs mostly in HIV-infected patients, who are also at increased risk of developing secondary cancers. The trends in secondary cancer risk are unclear in the HAART era. METHODS: We extracted data from the SEER database on patients diagnosed with KS between 1981 and 2013, stratified into the pre-HAART (1981-1995) and HAART (1996-2013) eras. We compared the risk of secondary cancer in KS patients and the general population, and estimated the absolute risk...
September 12, 2017: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/28874563/epigenetic-control-via-allosteric-regulation-of-mammalian-protein-arginine-methyltransferases
#7
Kanishk Jain, Cyrus Y Jin, Steven G Clarke
Arginine methylation on histones is a central player in epigenetics and in gene activation and repression. Protein arginine methyltransferase (PRMT) activity has been implicated in stem cell pluripotency, cancer metastasis, and tumorigenesis. The expression of one of the nine mammalian PRMTs, PRMT5, affects the levels of symmetric dimethylarginine (SDMA) at Arg-3 on histone H4, leading to the repression of genes which are related to disease progression in lymphoma and leukemia. Another PRMT, PRMT7, also affects SDMA levels at the same site despite its unique monomethylating activity and the lack of any evidence for PRMT7-catalyzed histone H4 Arg-3 methylation...
September 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28803888/cancer-risk-in-hiv-infected-people-in-the-usa-from-1996-to-2012-a-population-based-registry-linkage-study
#8
Raúl U Hernández-Ramírez, Meredith S Shiels, Robert Dubrow, Eric A Engels
BACKGROUND: Monitoring cancer risk among HIV-infected people in the modern antiretroviral therapy (ART) era is essential given their elevated risk for many cancers and prolonged survival with immunosuppression, ART exposure, and ageing. We aimed to examine cancer risk in HIV-infected people in the USA as compared with that in the general population. METHODS: We did a registry-linkage study with data from population-based HIV and cancer registries in the USA (the HIV/AIDS Cancer Match Study)...
August 10, 2017: Lancet HIV
https://www.readbyqxmd.com/read/28747447/long-term-aids-related-pcnsl-outcomes-with-hd-mtx-and-combined-antiretroviral-therapy
#9
Antoine Moulignier, Cédric Lamirel, Hervé Picard, Marie-Gisèle Lebrette, Corinne Amiel, Mohammed Hamidi, Marc Polivka, Jacqueline Mikol, Isabelle Cochereau, Gilles Pialoux
OBJECTIVE: To assess the characteristics and outcomes of patients with AIDS-related primary CNS lymphoma (AR-PCNSL) in the combined antiretroviral therapy (cART) era systematically treated with high-dose methotrexate (HD-MTX). METHODS: We retrospectively analyzed (intention-to-treat analysis) 51 consecutive patients with AR-PCNSL (median age 39 years) who were diagnosed from 1996 to 2014 and treated with a median of 6 (range 1-15) infusions of HD-MTX (3 g/m(2)) combined with cART...
August 22, 2017: Neurology
https://www.readbyqxmd.com/read/28707393/malaria-epstein-barr-virus-infection-and-the-pathogenesis-of-burkitt-s-lymphoma
#10
Anthony R Mawson, Suvankar Majumdar
A geographical and causal connection has long been recognized between malaria, Epstein-Barr virus (EBV) infection and Burkitt's lymphoma (BL), but the underlying mechanisms remain obscure. Potential clues are that the malaria parasite Plasmodium falciparum selectively absorbs vitamin A from the host and depends on it for its biological activities; secondly, alterations in vitamin A (retinoid) metabolism have been implicated in many forms of cancer, including BL. The first author has proposed that the merozoite-stage malaria parasite, emerging from the liver, uses its absorbed vitamin A as a cell membrane destabilizer to invade the red blood cells, causing anemia and other signs and symptoms of the disease as manifestations of an endogenous form of hypervitaminosis A (Mawson AR, Path Global Health 2013;107(3):122-9)...
November 1, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28694706/abnormalities-in-alternative-splicing-of-angiogenesis-related-genes-and-their-role-in-hiv-related-cancers
#11
REVIEW
Nonkululeko N Mthembu, Zukile Mbita, Rodney Hull, Zodwa Dlamini
Alternative splicing of mRNA leads to an increase in proteome biodiversity by allowing the generation of multiple mRNAs, coding for multiple protein isoforms of various structural and functional properties from a single primary pre-mRNA transcript. The protein isoforms produced are tightly regulated in normal development but are mostly deregulated in various cancers. In HIV-infected individuals with AIDS, there is an increase in aberrant alternative splicing, resulting in an increase in HIV/AIDS-related cancers, such as Kaposi's sarcoma, non-Hodgkin's lymphoma, and cervical cancer...
2017: HIV/AIDS: Research and Palliative Care
https://www.readbyqxmd.com/read/28652923/jc-virus-granule-cell-neuronopathy-onset-two-months-after-chemotherapy-for-low-grade-lymphoma
#12
Kathryn B Holroyd, Elias S Sotirchos, Scott R DeBoer, Kelly A Mills, Scott D Newsome
BACKGROUND: Granule cell neuronopathy (GCN) is a rare disease caused by the JC virus, leading to degeneration of cerebellar granule cell neurons. Primarily described in patients with AIDS, it has also been diagnosed in patients with lymphoproliferative diseases and after long-term treatment with immune-suppressing medications such as natalizumab. CASE PRESENTATION: A 69 year old woman presented with progressive ataxia which began 2 months after initiation of treatment for follicular low-grade B cell lymphoma with rituximab/bendamustine, and progressed for 2 years prior to admission...
2017: Cerebellum & Ataxias
https://www.readbyqxmd.com/read/28610450/novel-tumor-markers-provide-improved-prediction-of-survival-after-diagnosis-of-human-immunodeficiency-virus-hiv-related-diffuse-large-b-cell-lymphoma
#13
Chun Chao, Michael J Silverberg, Lie-Hong Chen, Lanfang Xu, Otoniel Martínez-Maza, Donald I Abrams, Hongbin D Zha, Reina Haque, Jonathan Said
Existing prognostic tools for HIV + diffuse large B-cell lymphoma (DLBCL) fail to accurately predict patient outcomes. To develop a novel prognostic algorithm incorporating molecular tumor characteristics and HIV disease factors, we included 80 patients with HIV-related DLBCL diagnosed between 1996 and 2007. Immunohistochemistry staining was used to analyze the expression of 26 tumor markers. Clinical data were collected from medical records. Logistic regression and bootstrapping were used to select and assess stability of the prognostic model, respectively...
February 2018: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28606064/bacteremia-due-to-gordonia-polyisoprenivorans-case-report-and-review-of-literature
#14
REVIEW
Xiurong Ding, Yanhua Yu, Ming Chen, Chen Wang, Yanfang Kang, Hongman Li, Jinli Lou
BACKGROUND: Gordonia polyisoprenivorans is a ubiquitous aerobic actinomycetes bacterium that rarely cause infections in humans. Here, we report a case of G. polyisoprenivorans catheter-related bacteremia in an AIDS patient. CASE PRESENTATION: A 37-year-old man with a past medical history of AIDS-related lymphoma suffered bacteremia caused by a Gram-positive corynebacterium. The strain was identified as a Gordonia species by matrix-assisted laser desorption ionization-time of flight mass spectrometry and confirmed to G...
June 12, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28592537/role-of-autophagy-in-hiv-1-matrix-protein-p17-driven-lymphangiogenesis
#15
Pietro Mazzuca, Stefania Marsico, Kai Schulze, Stefania Mitola, Marina C Pils, Cinzia Giagulli, Carlos A Guzman, Arnaldo Caruso, Francesca Caccuri
AIDS-related lymphomas (ARLs) are expected to increase in the future since combined antiretroviral therapy (cART) enhances the life expectancy of HIV-1-infected (HIV(+)) patients but does not affect the occurrence of ARLs to the same extent as that of other tumors. Lymphangiogenesis is essential in supporting growth and metastatic spreading of ARLs. HIV-1 does not infect the neoplastic B cells, but HIV-1 proteins have been hypothesized to play a key role in sustaining a prolymphangiogenic microenvironment in lymphoid organs...
August 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28508728/high-frequency-of-identical-clonal-immunoglobulin-dna-in-pre-treatment-tumor-and-plasma-from-untreated-patients-with-hiv-associated-lymphoma-prospective-multicenter-trial-of-the-aids-malignancies-consortium-amc-064
#16
Nina D Wagner-Johnston, Shelly Lensing, Ariela Noy, Lee Ratner, David Henry, Jeannette Y Lee, Sylvia Silver, Malek Faham, Richard F Ambinder
Patients with HIV are at increased risk for developing B-cell lymphomas likely due in part to chronic antigen stimulation leading to clonal immunoglobulin (Ig) gene rearrangements. Next-generation sequencing (NGS)-based identification of circulating Ig clonotypes has not been well-characterized in HIV-related lymphomas. The AIDS Malignancies Consortium (AMC) enrolled 51 untreated patients with HIV-related B-cell lymphomas and analyzed paired tumor/plasma specimens for Ig clonotypes using an NGS approach (AMC064, NCT00981097)...
May 16, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28507339/efficacy-and-tolerability-of-chemotherapy-in-chinese-patients-with-aids-related-burkitt-lymphoma-and-diffuse-large-b-cell-lymphoma-an-observational-study
#17
Jiang Xiao, Shuxu Du, Guorui Dai, Guiju Gao, Di Yang, Hongxin Zhao
We evaluated the efficacy and tolerability of chemotherapy in HIV-infected patients with diffuse large B-cell lymphoma (DLBCL) receiving CHOP ± R (n = 17) or Burkitt lymphoma (BL) receiving CODOX-M/IVAC ± R (n = 15). The study was conducted in Beijing Ditan Hospital from January 2009 to August 2015. The following grade 4 adverse effects were observed in BL and DLBCL patients, respectively: neutropenia (80% versus 47.1%), anaemia (46.7% versus 5.9%), thrombocytopenia (53.3% versus 11.8%), bacterial pneumonia (33...
May 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28502522/human-herpesvirus-8-related-diseases-histopathologic-diagnosis-and-disease-mechanisms
#18
REVIEW
Matthew Auten, Annette S Kim, Kyle T Bradley, Flavia G Rosado
The emergence of HIV/AIDS more than three decades ago led to an increased incidence of diseases caused by HHV8 co-infection, particularly Kaposi sarcoma, primary effusion lymphoma, and multicentric Castleman disease. Over time, the development of highly effective AIDS therapies has resulted in a decreased incidence of HHV8-associated entities, which are now more commonly found in patients with undiagnosed and/or untreated AIDS. Due to their rarity, some of these diseases may be difficult to recognize without appropriate clinical information...
July 2017: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/28408224/one-drug-for-two-targets-biological-evaluation-of-antiretroviral-agents-endowed-with-antiproliferative-activity
#19
Lorenzo Botta, Giorgio Maccari, Pierpaolo Calandro, Marika Tiberi, Annalaura Brai, Claudio Zamperini, Filippo Canducci, Mario Chiariello, Rosa Martí-Centelles, Eva Falomir, Miguel Carda
AIDS-related cancer diseases are malignancies with low incidence on healthy people that affect mostly subjects already immunocompromised. The connection between HIV/AIDS and these cancers has not been established yet, but a weakened immune system is certainly the main cause. We envisaged the possibility to screen a small library of compounds synthesized in our laboratory against opportunistic tumors mainly due to HIV infection like Burkitt's Lymphoma. From cellular assays and gene expression analysis we identified two promising compounds...
June 1, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28400759/human-and-epstein-barr-virus-mirna-profiling-as-predictive-biomarkers-for-endemic-burkitt-lymphoma
#20
Cliff I Oduor, Mercedeh Movassagh, Yasin Kaymaz, Kiprotich Chelimo, Juliana Otieno, John M Ong'echa, Ann M Moormann, Jeffrey A Bailey
Endemic Burkitt lymphoma (eBL) is an aggressive B cell lymphoma and is associated with Epstein-Barr virus (EBV) and Plasmodium falciparum malaria co-infections. Central to BL oncogenesis is the over-expression of the MYC proto-oncogene which is caused by a translocation of an Ig enhancer in approximation to the myc gene. While whole genome/transcriptome sequencing methods have been used to define driver mutations and transcriptional dysregulation, microRNA (miRNA) dysregulation and differential expression has yet to be fully characterized...
2017: Frontiers in Microbiology
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