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Lymphomas, AIDS-Related lymphomas,

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https://www.readbyqxmd.com/read/29844052/r-ras2-is-required-for-germinal-center-formation-to-aid-b-cells-during-energetically-demanding-processes
#1
Pilar Mendoza, Nuria Martínez-Martín, Elena R Bovolenta, Diana Reyes-Garau, Pablo Hernansanz-Agustín, Pilar Delgado, Manuel D Diaz-Muñoz, Clara L Oeste, Isabel Fernández-Pisonero, Ester Castellano, Antonio Martínez-Ruiz, Diego Alonso-Lopez, Eugenio Santos, Xosé R Bustelo, Tomohiro Kurosaki, Balbino Alarcón
Upon antigen recognition within peripheral lymphoid organs, B cells interact with T cells and other immune cells to transiently form morphological structures called germinal centers (GCs), which are required for B cell clonal expansion, immunoglobulin class switching, and affinity maturation. This process, known as the GC response, is an energetically demanding process that requires the metabolic reprogramming of B cells. We showed that the Ras-related guanosine triphosphate hydrolase (GTPase) R-Ras2 (also known as TC21) plays an essential, nonredundant, and B cell-intrinsic role in the GC response...
May 29, 2018: Science Signaling
https://www.readbyqxmd.com/read/29804238/are-non-hiv-malignancies-increased-in-the-hiv-infected-population
#2
REVIEW
Aaron P Thrift, Elizabeth Y Chiao
PURPOSE OF REVIEW: The introduction of antiretroviral therapy (ART) has revolutionized HIV infection management, resulting in improved outcomes and survival for people living with HIV (PLWH). However, as PLWH are living longer and aging, non-AIDS-defining cancers (NADCs) represent a significant source of morbidity and mortality in the HIV-infected population. Here, we review the epidemiology of NADCs in PLWH. RECENT FINDINGS: Cancer mortality among PLWH is much higher than that among the general population...
May 26, 2018: Current Infectious Disease Reports
https://www.readbyqxmd.com/read/29760982/biodynamic-digital-holography-of-chemoresistance-in-a-pre-clinical-trial-of-canine-b-cell-lymphoma
#3
Honggu Choi, Zhe Li, Hao Sun, Dan Merrill, John Turek, Michael Childress, David Nolte
Biodynamic digital holography was used to obtain phenotypic profiles of canine non-Hodgkin B-cell lymphoma biopsies treated with standard-of-care chemotherapy. Biodynamic signatures from the living 3D tissues were extracted using fluctuation spectroscopy from intracellular Doppler light scattering in response to the molecular mechanisms of action of therapeutic drugs that modify a range of internal cellular motions. The standard-of-care to treat B-cell lymphoma in both humans and dogs is a combination CHOP therapy that consists of doxorubicin, prednisolone, cyclophosphamide and vincristine...
May 1, 2018: Biomedical Optics Express
https://www.readbyqxmd.com/read/29727806/neoplasms-associated-deaths-in-hiv-1-infected-and-non-infected-patients-in-bahia-brazil
#4
Marinho Marques, Estela Luz, Mateus Leal, João Vitor Oliveira, Rejane Patrício, Eduardo Martins Netto, Carlos Brites
BACKGROUND: HIV-infected patients are at a higher risk to develop malignancies than general population. Although AIDS-related malignancies are a common feature of late-stage disease, patients under successful antiretroviral therapy also have an increased risk for development of non-AIDS malignancies. OBJECTIVE: To compare the frequency and characteristics of adults HIV-infected patients and general population who died of malignancies in Bahia, Brazil from January 2000 to December 2010...
May 1, 2018: Cancer Epidemiology
https://www.readbyqxmd.com/read/29676453/risk-factors-for-burkitt-lymphoma-a-nested-case-control-study-in-the-uk-clinical-practice-research-datalink
#5
Parisa Karimi, Brenda M Birmann, Lesley A Anderson, Charlene M McShane, Shahinaz M Gadalla, Joshua N Sampson, Sam M Mbulaiteye
Burkitt lymphoma (BL) occurs as three subtypes: endemic BL, immunosuppression-related BL and sporadic BL. Descriptive studies of BL age-specific incidence patterns have suggested multimodal peaks near 10, 40 and 70 years of age, but the risk factors for BL at different ages are unknown. We investigated risk factors for BL in the United Kingdom among 156 BL cases and 608 matched BL-free controls identified in the Clinical Practice Research Datalink (CPRD) between 1992 and 2016. Associations with pre-diagnostic body mass index, cigarette smoking, alcohol consumption, hepatitis, Epstein-Barr virus (EBV), human immunodeficiency virus infection and acquired immune deficiency syndrome (HIV/AIDS), malaria, allergic and autoimmune conditions, and prednisone use were evaluated...
May 2018: British Journal of Haematology
https://www.readbyqxmd.com/read/29663523/malignant-lymphoma-in-the-hiv-positive-patient
#6
REVIEW
Anne Meister, Marcus Hentrich, Christoph Wyen, Kai Hübel
The introduction of combination antiretroviral therapy (cART) drastically improved performance status, immune function, and life expectancy of HIV-infected individuals. In addition, incidence of opportunistic infections and of AIDS-defining malignancies declined. Nevertheless, aggressive non-Hodgkin's lymphoma still remains the leading cause of AIDS-related deaths. The availability of cART, however, significantly improved the therapeutic options for HIV-positive patients with lymphomas. Diffuse large B-cell lymphoma, Burkitt's lymphoma, or Hodgkin lymphoma has increasingly become curable diseases...
April 16, 2018: European Journal of Haematology
https://www.readbyqxmd.com/read/29645080/risk-of-oral-tongue-cancer-among-immunocompromised-transplant-recipients-and-human-immunodeficiency-virus-infected-individuals-in-the-united-states
#7
Joseph E Tota, Eric A Engels, Margaret M Madeleine, Christina A Clarke, Charles F Lynch, Ana P Ortiz, Brenda Y Hernandez, Anil K Chaturvedi
BACKGROUND: Oral tongue cancer incidence has increased among whites in the United States; however, the cause remains unknown. If an infectious agent is implicated, then elevated risk would be expected among immunosuppressed individuals. METHODS: By using population-based registry linkage information from the US Transplant Cancer Match and human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS) Cancer Match studies, the authors examined the risk of oral tongue squamous cell carcinoma (SCC) among immunocompromised transplantation recipients and HIV-infected individuals...
June 15, 2018: Cancer
https://www.readbyqxmd.com/read/29604975/primary-cns-lymphoma-in-hiv-infection
#8
Dieta Brandsma, Jacoline E C Bromberg
Primary CNS lymphoma (PCNSL) has been designated an acquired immune deficiency syndrome (AIDS)-defining disease since 1983 and accounts for up to 15% of non-Hodgkin lymphomas in human immunodeficiency virus (HIV) patients. The majority of HIV patients are Epstein-Barr virus (EBV)-related. The most likely etiology is ineffective immunoregulation of EBV, inducing oncogenic protein expression, and subsequent loss of apoptosis and increased proliferation of lymphocytes. PCNSL generally presents with supratentorial, single or multiple, contrast-enhancing lesions...
2018: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/29545328/genetic-landscape-of-hepatitis-b-virus-associated-diffuse-large-b-cell-lymphoma
#9
Weicheng Ren, Xiaofei Ye, Hong Su, Wei Li, Dongbing Liu, Mohammad Pirmoradian, Xianhuo Wang, Bo Zhang, Qiang Zhang, Longyun Chen, Man Nie, Yao Liu, Bin Meng, Huiqiang Huang, Wenqi Jiang, Yixin Zeng, Wenyu Li, Kui Wu, Yong Hou, Klas G Wiman, Zhiming Li, Huilai Zhang, Roujun Peng, Shida Zhu, Qiang Pan-Hammarström
Hepatitis B virus (HBV) infection is endemic in some parts of Asia, Africa and South America and remains to be a significant public health problem in these areas. It is known as a leading risk factor for the development of hepatocellular carcinoma, but epidemiological studies have also shown that the infection may increase the incidence of several types B-cell lymphoma. Here, by characterizing altogether 275 Chinese diffuse large B-cell lymphoma (DLBCL) patients, we showed that patients with concomitant HBV infection (surface antigen positive, HBsAg+ ) are characterized by a younger age, a more advanced disease stage at diagnosis and a reduced overall survival...
March 15, 2018: Blood
https://www.readbyqxmd.com/read/29460518/prevalence-of-hiv-related-oral-manifestations-and-their-association-with-haart-and-cd4-t-cell-count-a-review
#10
L Ottria, D Lauritano, L Oberti, V Candotto, F Cura, A Tagliabue, L Tettamanti
HIV infection is one of the major health problem of the last decades. This disease causes a chronic infection that can lead to acquired immunodeficiency syndrome (AIDS). According to the Global AIDS update, released in 2016 by HIV department of World Health Organization (WHO) and by the Joint United Nations Program on HIV/AIDS (UNAIDS), at the end of 2015, 36.7 million people were infected by HIV: 34.9 million of these were adults and 1.8 million were children under 15 years of age. The same report shows that during 2015, 2...
January 2018: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29439188/incidence-and-risk-factors-for-relapses-in-hiv-associated-non-hodgkin-lymphoma-as-observed-in-the-german-hiv-related-lymphoma-cohort-study
#11
Philipp Schommers, Daniel Gillor, Marcus Hentrich, Christoph Wyen, Timo Wolf, Mark Oette, Alexander Zoufaly, Jan-Christian Wasmuth, Johannes R Bogner, Markus Müller, Stefan Esser, Alisa Schleicher, Björn Jensen, Albrecht Stoehr, Georg Behrens, Alexander Schultze, Jan Siehl, Jan Thoden, Ninon Taylor, Christian Hoffmann
Outcome of HIV-infected patients with AIDS-related lymphomas has improved during recent years. However, data on incidence, risk factors, and outcome of relapses in AIDS-related lymphomas after achieving complete remission are still limited. This prospective observational multicenter study includes HIV-infected patients with biopsy- or cytology-proven malignant lymphomas since 2005. Data on HIV infection and lymphoma characteristics, treatment and outcome were recorded. For this analysis, AIDS-related lymphomas patients in complete remission were analyzed in terms of their relapse- free survival and potential risk factors for relapses...
May 2018: Haematologica
https://www.readbyqxmd.com/read/29424776/a-prospective-study-of-serum-microbial-translocation-biomarkers-and-risk-of-aids-related-non-hodgkin-lymphoma
#12
Marta Epeldegui, Larry Magpantay, Yu Guo, Gordana Halec, William G Cumberland, Priscilla K Yen, Bernard Macatangay, Joseph B Margolick, Anne F Rositch, Steven Wolinsky, Otoniel Martinez-Maza, Shehnaz K Hussain
BACKGROUND: Chronic immune activation is a harbinger of AIDS-associated non-Hodgkin lymphoma (AIDS-NHL), yet the underlying basis is unclear. Microbial translocation, the passage of microbial components from the gastrointestinal tract into the systemic circulation, is a source of systemic immune activation in HIV infection and may be an important contributor to chronic B-cell activation and subsequent AIDS-NHL development. METHOD: We measured biomarkers of microbial translocation including bacterial receptors/antibodies, intestinal barrier proteins, and macrophage activation-associated cytokines/chemokines, in serum from 200 HIV-infected men from the Multicenter AIDS Cohort Study prior to their AIDS-NHL diagnosis (mean = 3...
April 24, 2018: AIDS
https://www.readbyqxmd.com/read/29413580/serum-metabolite-profiling-of-cutaneous-t-cell-lymphoma-based-on-a-multiplatform-approach
#13
Guoting Jiang, Xiaoyan Shen, Hongyan Kang, Kejia Li, Jie Zheng, Yunqiu Yu
Cutaneous T-cell lymphoma (CTCL) is a class of non-Hodgkin lymphoma with a difficult early diagnosis. The overall annual age-adjusted incidence of CTCL had consistently increased to around 10.2 cases per million persons. However, our knowledge regarding its mechanism of disease origin and progression remains unclear. In this study, serum samples from 31 CTCL patients and 31 matched healthy volunteers were analyzed in depth to screen metabolites capable of differentiating CTCL from controls. To obtain a higher coverage of metabolome with various hydrophilicity, a multiplatform approach with GC-MS and UHPLC-QTOF-MS has been employed...
March 1, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29397834/-clinical-analysis-of-10-cases-of-aids-complicated-with-lymphoma
#14
Qiang Pei, Xiao Han, Yan Zhang, Wei Zhang, Dao-Bin Zhou
OBJECTIVE: To investigate the clinical features and treatment of the patients with AIDS- related lymphoma (ARL). METHODS: The clinical data, pathology, treatment and prognosis of patients with ARL were retrospectively analyzed. RESULTS: Among 10 cases of ARL, 9 were male and 1 was female. The median age was 42 years old. Lymphoma occurred in 6 patients after diagnosis as AIDS, and treatment for 7-48 months, 1 case among which was diagnosed but not treated, then the lymphomatous symptions appeared after 48 months; 3 patients were found to have HIV infection during the diagnosis and treatment of lymphoma...
February 2018: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/29359812/novel-insights-into-the-disease-dynamics-of-b-cell-lymphomas-in-the-genomics-era
#15
REVIEW
Fong Chun Chan, Emilia Lim, Robert Kridel, Christian Steidl
High-throughput sequencing has significantly contributed to revealing the molecular underpinnings of B-cell lymphomagenesis and disease progression. It is now a widely accepted concept that the diversity of clinical responses to front-line therapy and the development of relapsed/refractory disease are in part explained by 'inter-patient' genetic heterogeneity measurable by individual sets of somatic gene alterations in tumor genomes. Moreover, extensive 'intra-tumor' heterogeneity on the genotypic and phenotypic levels is the product of ongoing tumor evolution and adaptation to various selective pressures during cancer initiation, progression, and therapeutic intervention...
April 2018: Journal of Pathology
https://www.readbyqxmd.com/read/29334197/increased-non-aids-mortality-among-persons-with-aids-defining-events-after-antiretroviral-therapy-initiation
#16
April C Pettit, Mark J Giganti, Suzanne M Ingle, Margaret T May, Bryan E Shepherd, Michael J Gill, Gerd Fätkenheuer, Sophie Abgrall, Michael S Saag, Julia Del Amo, Amy C Justice, Jose M Miro, Matthias Cavasinni, François Dabis, Antonella D Monforte, Peter Reiss, Jodie Guest, David Moore, Leah Shepherd, Niels Obel, Heidi M Crane, Colette Smith, Ramon Teira, Robert Zangerle, Jonathan Ac Sterne, Timothy R Sterling
INTRODUCTION: HIV-1 infection leads to chronic inflammation and to an increased risk of non-AIDS mortality. Our objective was to determine whether AIDS-defining events (ADEs) were associated with increased overall and cause-specific non-AIDS related mortality after antiretroviral therapy (ART) initiation. METHODS: We included HIV treatment-naïve adults from the Antiretroviral Therapy Cohort Collaboration (ART-CC) who initiated ART from 1996 to 2014. Causes of death were assigned using the Coding Causes of Death in HIV (CoDe) protocol...
January 2018: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/29280854/spermatocytic-seminoma-a-report-of-85-cases-emphasizing-its-morphologic-spectrum-including-some-aspects-not-widely-known
#17
Rong Hu, Thomas M Ulbright, Robert H Young
Spermatocytic seminoma (or, alternatively, spermatocytic tumor) of the testis is rare and errors in pathologic diagnosis are still made. As it has a good prognosis, except when it, rarely, undergoes sarcomatous transformation, accurate diagnosis and differentiating it from usual seminoma and other malignant neoplasms such as lymphoma are crucial. To potentially contribute information of diagnostic aid we reviewed the largest series of cases reported to date to characterize in detail their histologic spectrum...
December 26, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29226557/lysophosphatidic-acid-accelerates-development-of-porcine-embryos-by-activating-formation-of-the-blastocoel
#18
Min-Young Shin, Seung-Eun Lee, Yeo-Jin Son, Yun-Gwi Park, Sang-Gi Jeong, Eun-Young Kim, Se-Pill Park
Culture media modifications, including the addition of various factors, are important for the in vitro production of oocytes and embryos. In this study, we investigated the effects of lysophosphatidic acid (LPA) on porcine embryo development. Porcine parthenogenetic embryos were cultured with 0, 0.1, 1, and 10 μM LPA for 7 days, or cultured in basic medium until Day 4 and then treated with LPA from Days 4 to 7. No difference in the in vitro development of embryos cultured with LPA for 7 days was observed...
January 2018: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/29207179/arctigenin-induces-the-apoptosis-of-primary-effusion-lymphoma-cells-under-conditions-of-glucose-deprivation
#19
Yusuke Baba, Zenpei Shigemi, Naoko Hara, Misato Moriguchi, Marina Ikeda, Tadashi Watanabe, Masahiro Fujimuro
Kaposi's sarcoma-associated herpesvirus (KSHV) is the causative agent of primary effusion lymphoma (PEL) and Kaposi's sarcoma. PEL is a type of non-Hodgkin's B-cell lymphoma, affecting immunosuppressed individuals, such as post-transplant or AIDS patients. However, since PEL is resistant to chemotherapeutic regimens, new effective treatment strategies are required. Arctigenin, a natural lignan compound found in the plant Arctium lappa, has been widely investigated as a potential anticancer agent in the clinical setting...
February 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29095687/three-novel-multiple-recombinant-types-of-species-of-human-mastadenovirus-d-hadv-d-73-74-75-isolated-from-diarrhoeal-faeces-of-immunocompromised-patients
#20
Elias Hage, Akshay Dhingra, Uwe G Liebert, Sandra Bergs, Tina Ganzenmueller, Albert Heim
Species D is the largest of the seven species of human mastadenoviruses (HAdV), but few of its multiple types are associated with asevere disease, e.g. epidemic keratoconjunctivitis. Many other types are hardly ever associated with significant diseases in immunocompetent patients, but have been isolated from the diarrhoeal faeces of terminal AIDS patients suggesting their role as opportunistic pathogens. Three novel HAdV-D strains were isolated from the faeces of three immunocompromised adult patients (clinical diagnoses: lymphoma, myelodysplastic syndrome and AIDS CDC3B, respectively)...
November 2, 2017: Journal of General Virology
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