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https://www.readbyqxmd.com/read/29760982/biodynamic-digital-holography-of-chemoresistance-in-a-pre-clinical-trial-of-canine-b-cell-lymphoma
#1
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/29739902/repurposing-cytarabine-for-treating-primary-effusion-lymphoma-by-targeting-kaposi-s-sarcoma-associated-herpesvirus-latent-and-lytic-replications
#2
Marion Gruffaz, Shenghua Zhou, Karthik Vasan, Teresa Rushing, Qing Liu Michael, Chu Lu, Jae U Jung, Shou-Jiang Gao
Oncogenic Kaposi's sarcoma-associated herpesvirus (KSHV) is etiologically linked to primary effusion lymphoma (PEL), an aggressive and nontreatable malignancy commonly found in AIDS patients. In this study, we performed a high-throughput screening of 3,731 characterized compounds and identified cytarabine, approved by the FDA for treating numerous types of cancer, as a potent inhibitor of KSHV-induced PEL. We showed the high efficacy of cytarabine in the growth inhibition of various PEL cells by inducing cell cycle arrest and apoptosis...
May 8, 2018: MBio
https://www.readbyqxmd.com/read/29727806/neoplasms-associated-deaths-in-hiv-1-infected-and-non-infected-patients-in-bahia-brazil
#3
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/29714651/hypereosinophilic-syndrome-preceding-a-diagnosis-of-b-cell-lymphoma
#4
Arash Samarghandi, Shradha Ahuja, Vishal Jindal, Sorab Gupta, Ilmana Fulger
INTRODUCTION: Hypereosinophilic syndrome (HES) is a rare condition characterized by eosinophilia and organ destruction secondary to eosinophilic infiltration. The coexistence of primary B-cell lymphoma and hypereosinophilic syndrome is extremely rare. We present a case of HES that preceded the diagnosis of diffuse large B-cell lymphoma. CASE REPORT: A 70-year-old man presented with a 3-month history of diarrhea and 30-pound weight loss. Complete blood count showed a white blood cell count of 7452/µL with eosinophils of 42% (absolute eosinophil count 3130)...
March 1, 2018: Tumori
https://www.readbyqxmd.com/read/29704526/a-novel-gene-expression-analytics-based-approach-to-structure-aided-design-of-rexinoids-for-development-as-next-generation-cancer-therapeutics
#5
Bentley J Hanish, Jennifer F Hackney Price, Ichiro Kaneko, Ning Ma, Arjan van der Vaart, Carl E Wagner, Peter W Jurutka, Pamela A Marshall
Rexinoids are powerful ligands that bind to retinoid-X-receptors (RXRs) and show great promise as therapeutics for a wide range of diseases, including cancer. However, only one rexinoid, bexarotene (Targretin TM) has been successfully transitioned from the bench to the clinic and used to treat cutaneous T-cell lymphoma (CTCL). Our goal is to develop novel potent rexinoids with a less untoward side effect profile than bexarotene. To this end, we have synthesized a wide array of rexinoids with EC50 values and biological activity similar to bexarotene...
April 25, 2018: Steroids
https://www.readbyqxmd.com/read/29701529/evaluation-of-the-diagnostic-utility-of-cytologic-examination-of-renal-fine-needle-aspirates-from-dogs-and-the-use-of-ultrasonographic-features-to-inform-cytologic-diagnosis
#6
Camille A McAloney, Leslie C Sharkey, Daniel A Feeney, Davis M Seelig, Anne C Avery, Carl R Jessen
OBJECTIVE To describe cytologic characteristics of renal fine-needle aspirate (FNA) samples from dogs, evaluate proportions of cytologic specimens deemed adequate for interpretation (diagnostic yield), assess diagnostic utility of cytologic examination for neoplastic and nonneoplastic diseases, and characterize ultrasonographic features of evaluated kidneys to determine whether the imaging characteristics could be used to inform cytologic interpretations. DESIGN Retrospective, observational study. SAMPLE 102 cytologic specimens and 97 ultrasonographic studies from 100 dogs...
May 15, 2018: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29687211/dual-threat-of-epstein-barr-virus-an-autopsy-case-report-of-hiv-positive-plasmablastic-lymphoma-complicating-ebv-associated-hemophagocytic-lymphohistiocytosis
#7
Yusuke Koizumi, Ken-Ichi Imadome, Yasunori Ota, Hitoshi Minamiguchi, Yoshinori Kodama, Dai Watanabe, Hiroshige Mikamo, Tomoko Uehira, Seiji Okada, Takuma Shirasaka
Epstein-Barr virus (EBV) reactivation causes serious diseases in immunocompromised hosts, such as acquired immunodeficiency syndrome (AIDS). We report on a case of plasmablastic lymphoma (PBL) with hemophagocytic lymphohistiocytosis (HLH).A-53-year-old Japanese man was diagnosed with PBL and AIDS. In addition to combined antiretroviral therapy, HyperCVAD (cyclophosphamide, doxorubicin, vincristine, prednisone)/high-dose methotrexate + cytarabine was initiated immediately. Partial remission was attained with chemotherapy...
April 23, 2018: Journal of Clinical Immunology
https://www.readbyqxmd.com/read/29683438/visualizing-the-actin-and-microtubule-cytoskeletons-at-the-b-cell-immune-synapse-using-stimulated-emission-depletion-sted-microscopy
#8
Jia C Wang, Madison Bolger-Munro, Michael R Gold
B cells that bind to membrane-bound antigens (e.g., on the surface of an antigen-presenting cell) form an immune synapse, a specialized cellular structure that optimizes B-cell receptor (BCR) signaling and BCR-mediated antigen acquisition. Both the remodeling of the actin cytoskeleton and the reorientation of the microtubule network towards the antigen contact site are essential for immune synapse formation. Remodeling of the actin cytoskeleton into a dense peripheral ring of F-actin is accompanied by polarization of the microtubule-organizing center towards the immune synapse...
April 9, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29682464/gastric-inflammatory-fibroid-polyp-tumor-with-acute-intestinal-obstruction-vanek-s-tumor-can-mimick-a-giant-gastrointestinal-stromal-tumor-or-a-gastric-lymphoma
#9
Francesco Fleres, Carmelo Mazzeo, Antonio Ieni, Maurizio Rossitto, Eugenio Cucinotta
An inflammatory fibroid polyp (IFP) is a solitary rare benign neoplasm of the gastrointestinal tract, frequently located in the gastric antrum. IFPs account for about 0.1% of all gastric polyps. We report a case of a giant gastric inflammatory polyp of 2.5 cm × 7 cm that determines a gastric outlet obstruction called "ball valve syndrome" mimicking a gastrointestinal stromal tumor (GIST) and a gastric lymphoma, with an intestinal obstruction of high origin. Therefore, due to acute presentation we have decided to submit the patient to a subtotal gastrectomy...
2018: Journal of Visualized Surgery
https://www.readbyqxmd.com/read/29676453/risk-factors-for-burkitt-lymphoma-a-nested-case-control-study-in-the-uk-clinical-practice-research-datalink
#10
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...
April 20, 2018: British Journal of Haematology
https://www.readbyqxmd.com/read/29666292/human-immunodeficiency-virus-tat-protein-aids-v-region-somatic-hypermutation-in-human-b-cells
#11
Xiaohua Wang, Zhi Duan, Guojun Yu, Manxia Fan, Matthew D Scharff
Long-term survivors of human immunodeficiency virus (HIV) infection have been shown to have a greatly increased incidence of B cell lymphomas. This increased lymphomagenesis suggests some link between HIV infection and the destabilization of the host B cell genome, a phenomenon also suggested by the extraordinary high frequency of mutation, insertion, and deletion in the broadly neutralizing HIV antibodies. Since HIV does not infect B cells, the molecular mechanisms of this genomic instability remain to be fully defined...
April 17, 2018: MBio
https://www.readbyqxmd.com/read/29663523/malignant-lymphoma-in-the-hiv-positive-patient
#12
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 have increasingly become curable diseases...
April 16, 2018: European Journal of Haematology
https://www.readbyqxmd.com/read/29658143/which-very-elderly-diffuse-large-b-cell-lymphoma-patients-can-benefit-from-curative-treatment-a-multicenter-retrospective-analysis-by-the-spanish-geltamo-group
#13
Emilia Pardal, Eva Díez Baeza, Queralt Salas, Tomás García, Juan M Sancho, Encarna Monzón, José M Moraleda, Raúl Córdoba, Fátima de la Cruz, José A Queizán, María J Rodríguez, Belén Navarro, José A Hernández, Rosana Díez, María Vahi, María C Viguria, Miguel Canales, María J Peñarrubia, Tomás J González-López, Santiago Montes-Moreno, Eva González-Barca, Dolores Caballero, Alejandro Martín
The means of optimally managing very elderly patients with diffuse large B-cell lymphoma (DLBCL) has not been established. We retrospectively analyzed 252 patients aged 80-100 years, diagnosed with DLBCL or grade 3B follicular lymphoma, treated in 19 hospitals from the GELTAMO group. Primary objective was to analyze the influence of the type of treatment and comorbidity scales on progression-free survival (PFS) and overall survival (OS). 163 patients (63%) were treated with chemotherapy that included anthracyclines and/or rituximab, whereas 15% received no chemotherapeutic treatment...
April 15, 2018: American Journal of Hematology
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
#14
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...
April 12, 2018: Cancer
https://www.readbyqxmd.com/read/29629229/ambiguity-in-the-dural-tail-sign-on-mri
#15
Ramesh S Doddamani, Rajesh K Meena, Dattaraj Sawarkar
Background: Meningiomas give rise to the dural tail sign (DTS) on contrast-enhanced magnetic resonance imaging (CEMRI). The presence of DTS does not always qualify for a meningioma, as it is seen in only 60-72% of cases. This sign has been described in various other lesions like lymphomas, metastasis, hemangiopericytomas, schwannomas and very rarely glioblastoma multiforme (GBM). The characteristics of dural-based GBMs are discussed here, as only eleven such cases are reported in the literature till date...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/29604975/primary-cns-lymphoma-in-hiv-infection
#16
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/29599595/non-hodgkin-s-lymphoma-of-the-mandible-in-hiv-patient-a-rare-case-report
#17
Mahesh Neerupakam, Jacob Prakash, Sridevi Koduri, Thejasri Vishnubhatla
Non-Hodgkin's lymphoma (NHL) is a lymphatic system tumor originating from either B or T lymphocytes and shows a high malignant potential. In HIV-seropositive patients, NHL of head and neck is mainly found in Waldeyer's ring, oral mucosa, salivary glands, paranasal sinuses, and laryngeal tissue. Primary NHL rarely affects the bone. When the lesion affects the bones of the jaws, it is rare in the mandible when compared to the maxilla. In the reported cases, only 0.6% are found in the mandible. NHL of the mandible can be difficult to diagnose, and so the prime aim of the present case report is to establish appropriate diagnosis of one of such kinds...
January 2018: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29594225/retrospective-methods-to-estimate-radiation-dose-at-the-site-of-breast-cancer-development-after-hodgkin-lymphoma-radiotherapy
#18
Nicola S Russell, Inge M Krul, Anna M van Eggermond, Berthe M P Aleman, Rosie Cooke, Susanne Kuiper, Steven D Allen, Matthew G Wallis, Damien Llanas, Ibrahima Diallo, Florent de Vathaire, Susan A Smith, Michael Hauptmann, Annegien Broeks, Anthony J Swerdlow, Flora E Van Leeuwen
Background: An increased risk of breast cancer following radiotherapy for Hodgkin lymphoma (HL) has now been robustly established. In order to estimate the dose-response relationship more accurately, and to aid clinical decision making, a retrospective estimation of the radiation dose delivered to the site of the subsequent breast cancer is required. Methods: For 174 Dutch and 170 UK female patients with breast cancer following HL treatment, the 3-dimensional position of the breast cancer in the affected breast was determined and transferred onto a CT-based anthropomorphic phantom...
December 2017: Clinical and Translational Radiation Oncology
https://www.readbyqxmd.com/read/29581109/b-cell-tumor-development-in-tet2-deficient-mice
#19
Enguerran Mouly, Hussein Ghamlouch, Veronique Della-Valle, Laurianne Scourzic, Cyril Quivoron, Damien Roos-Weil, Patrycja Pawlikowska, Véronique Saada, M'Boyba K Diop, Cécile K Lopez, Michaela Fontenay, Philippe Dessen, Ivo P Touw, Thomas Mercher, Said Aoufouchi, Olivier A Bernard
The TET2 gene encodes an α-ketoglutarate-dependent dioxygenase able to oxidize 5-methylcytosine into 5-hydroxymethylcytosine, which is a step toward active DNA demethylation. TET2 is frequently mutated in myeloid malignancies but also in B- and T-cell malignancies. TET2 somatic mutations are also identified in healthy elderly individuals with clonal hematopoiesis. Tet2 -deficient mouse models showed widespread hematological differentiation abnormalities, including myeloid, T-cell, and B-cell malignancies. We show here that, similar to what is observed with constitutive Tet2 -deficient mice, B-cell-specific Tet2 knockout leads to abnormalities in the B1-cell subset and a development of B-cell malignancies after long latency...
March 27, 2018: Blood Advances
https://www.readbyqxmd.com/read/29561433/primary-testicular-natural-killer-t-cell-lymphoma-a-care-case-report-and-review-of-literature
#20
Wan-Lin Zhang, Shuang Ma, Rachel Jug, Fan Li, Endi Wang, Huan-Yu Zhao, Hong-Tao Xu, Lin Cai, Cheng-Qian Yu, Shuai Shen, Lian-He Yang
RATIONALE: Primary testicular natural killer (NK)/T-cell lymphoma is an extremely rare and highly aggressive lymphoid malignancy. At present, only 20 cases have been reported. PATIENT CONCERNS: A 32-year-old Chinese man complained of discomfort and swelling of his right testicle for 3 months. Physical examination revealed a 10 × 10 × 9.5 cm mass on the right side of the scrotum area. DIAGNOSES: Pathologic evaluation showed effacement of normal testicular parenchymal architecture by small-to-medium-sized lymphoid cells with irregular nuclear profiles, and immunohistochemical studies positively expressed CD2, CD56, cytoplasmic CD3, granzyme B, perforin, and TIA-1...
March 2018: Medicine (Baltimore)
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