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https://www.readbyqxmd.com/read/28737201/-paniculitis-as-manifestation-of-prolonged-febrile-syndrome-case-report
#1
Alexa Puchi Silva, Paulina López Radrigán, Montserrat Zapico Lafuente, Sergio Tapia Carrere, Sergio González Bombardiere
Fever of unknown origin (FUO) is defined as fever over 7 to 10 days without a diagnosis despite a complete initial study. The most frequent causes are infections, autoimmune and tumors. Even though most cases are self-limited there is a minority that has an underlying etiology with an ominous forecast, encouraging a systematized study. OBJECTIVE: To report a rare case of a boy who presented fever of unknown origin associated to panniculitis and was diagnosed of subcutaneous panniculitis-like-T cell lymphoma and to emphasis the importance of a sequential study of FUO, in order to reach a diagnosis in patients who need a timely intervention...
June 2017: Revista Chilena de Pediatría
https://www.readbyqxmd.com/read/28735665/prevalence-of-foxp3-cells-does-not-correlate-with-ki67-expression-in-canine-diffuse-large-b-cell-lymphoma
#2
C F Muir, S L Priestnall, A Hibbert, C Brown, O A Garden, T Scase
Diffuse large B-cell lymphoma (DLBCL) is the most common type of canine lymphoma and survival times are currently <1 year. Manipulation of the tumour microenvironment, of which the regulatory T cell (Treg) is a principal player, represents a potentially exciting way to curb the rapid proliferation of neoplastic cells. Tregs, characterized by the stable expression of the transcription factor FoxP3, suppress innate and adaptive arms of the immune response and represent a potential therapeutic target within neoplastic lymph nodes...
July 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28729150/impact-of-dendritic-cell-recovery-on-outcomes-after-umbilical-cord-blood-and-sibling-donor-transplantation-for-hematologic-malignancies
#3
Waseem Touma, Claudio G Brunstein, Michael R Verneris, Qing Cao, Julie Curtsinger, Jeffrey S Miller, Veronika Bachanova
Dendritic cells (DCs) orchestrate immune responses after allogeneic hematopoietic cell transplantation (HCT). We studied the association of donor myeloid DCs (mDCs) and plasmacytoid DCs (pDCs) recovery in the landmark analysis of umbilical cord blood (UCB) and matched related donor (RD) HCT. Eighty patients (42 UCB and 38 RD recipients) with a day 100 (D+100) blood sample were included in the analysis. Median age was 51 years (20-71). Most patients had acute leukemia (50%) or lymphoma (23%) and received reduced-intensity conditioning (75%)...
July 17, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28726521/polymer-donors-of-nitric-oxide-improve-the-treatment-of-experimental-solid-tumours-with-nanosized-polymer-therapeutics
#4
Milada Šírová, Veronika Horková, Tomáš Etrych, Petr Chytil, Blanka Říhová, Martin Studenovský
Polymer carriers based on N-(2-hydroxypropyl)methacrylamide (HPMA) copolymers with incorporated organic nitrates as nitric oxide (NO) donors were designed with the aim to localize NO generation in solid tumours, thus highly increasing the enhanced permeability and retention (EPR) effect. The NO donors were coupled to the polymer carrier either through a stable bond or through a hydrolytically degradable, pH sensitive, bond. In vivo, the co-administration of the polymer NO donor and HPMA copolymer-bound cytotoxic drug (doxorubicin; Dox) resulted in an improvement in the treatment of murine EL4 T-cell lymphoma...
July 20, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28724765/translesion-polymerase-pol-%C3%AE-is-required-for-efficient-epstein-barr-virus-infectivity-and-is-regulated-by-the-viral-deubiquitinating-enzyme-bplf1
#5
Ossie F Dyson, Joseph S Pagano, Christopher B Whitehurst
Epstein-Barr Virus (EBV) infection and lytic replication are known to induce a cellular DNA damage response. Previously we showed that the virally encoded BPLF1 protein interacts with and regulates several members of the translesion synthesis pathway (TLS), a DNA damage tolerance pathway, and that these cellular factors enhance viral infectivity. BPLF1 is a late lytic cycle gene, but the protein is also packaged in the viral tegument indicating that BPLF1 may function both early and late during infection. BPLF1 expresses deubiquitinating activity that is strictly conserved across the Herpesviridae; mutation of the active-site cysteine results in loss of enzymatic activity...
July 19, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28723950/high-affinity-anti-tim-3-and-anti-kir-monoclonal-antibodies-cloned-from-healthy-human-individuals
#6
Stefan Ryser, Angeles Estellés, Edgar Tenorio, Lawrence M Kauvar, Mikhail L Gishizky
We report here the cloning of native high affinity anti-TIM-3 and anti-KIR IgG monoclonal antibodies (mAbs) from peripheral blood mononuclear cells (PBMC) of healthy human donors. The cells that express these mAbs are rare, present at a frequency of less than one per 105 memory B-cells. Using our proprietary multiplexed screening and cloning technology CellSpot™ we assessed the presence of memory B-cells reactive to foreign and endogenous disease-associated antigens within the same individual. When comparing the frequencies of antigen-specific memory B-cells analyzed in over 20 screening campaigns, we found a strong correlation of the presence of anti-TIM-3 memory B-cells with memory B-cells expressing mAbs against three disease-associated antigens: (i) bacterial DNABII proteins that are a marker for Gram negative and Gram positive bacterial infections, (ii) hemagglutinin (HA) of influenza virus and (iii) the extracellular domain of anaplastic lymphoma kinase (ALK)...
2017: PloS One
https://www.readbyqxmd.com/read/28723631/cbl-b-predicts-postoperative-survival-in-patients-with-resectable-pancreatic-ductal-adenocarcinoma
#7
Qian Dong, Yuteng Ma, Yao Zhang, Xiujuan Qu, Zhi Li, Yafei Qi, Yunpeng Liu, Ce Li, Kai Li, Xianghong Yang, Xiaofang Che
Casitas B-lineage lymphoma b (Cbl-b) is a ubiquitin-protein ligase and a signal transducing adaptor protein involved in immune regulation, and it may be involved in the development and progression of cancer. We investigated the association between Cbl-b expression and prognosis in patients with resectable pancreatic ductal adenocarcinoma (PDAC). The clinicopathological characteristics and survival data of 134 patients with surgery for PDAC between January 2009 and February 2012 were retrospectively evaluated, and Cbl-b expression was assayed by immunohistochemical staining...
June 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28722163/risk-of-cancer-in-patients-with-psoriasis-on-biologic-therapies-a-systematic-review
#8
REVIEW
E Peleva, L S Exton, K Kelley, K J Mason, C H Smith
Biologic therapies are highly effective in psoriasis, but have profound effects on innate and adaptive immune pathways that may negatively impact on cancer immunosurveillance mechanisms. To investigate the risk of cancer in psoriasis patients treated with biologic therapy we searched Medline, Embase, and the Cochrane Library (up to August 2016) for randomized control trials, prospective cohort studies and systematic reviews that reported cancer incidence in people exposed to biologic therapy for psoriasis compared to a control population...
July 19, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28719434/primary-cutaneous-small-medium-cd4-t-cell-lymphoproliferative-disorder-occurring-in-a-patient-with-metastatic-melanoma
#9
Jonathan J Davick, Elizabeth Gaughan, Megan Barry, Alejandro A Gru
Therapeutic agents designed to stimulate the immune system are now cornerstones in the treatment of metastatic melanoma. These drugs promote lymphocyte growth and survival, which could plausibly result in clinical lymphoproliferative disorders. We report the case of a 62-year-old female with metastatic melanoma who developed primary cutaneous small/medium CD4 T-cell lymphoproliferative disorder (PC-SMTCL) after treatment with vemurafenib and recombinant high-dose interleukin-2 (IL-2). The patient developed a painless red papule behind the ear...
July 14, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28718418/novel-insights-into-membrane-targeting-of-b-cell-lymphoma
#10
REVIEW
Charlotte M de Winde, Suraya Elfrink, Annemiek B van Spriel
Standard therapy of patients with B cell non-Hodgkin lymphoma (B-NHL) predominantly consists of chemotherapy combined with anti-CD20 (e.g., rituximab) immunotherapy. However, relapse of aggressive B-NHL occurs frequently, and this may coincide with therapy resistance. This demonstrates the urgent need for exploring new lymphoma-targeted therapies. We review here recent insights in the pathophysiology of B-NHL and discuss CD20 and three alternative membrane targets (B cell receptor, immune checkpoints PD-1/PD-L1, tetraspanin CD37) that are currently in the spotlight for B-NHL treatment...
June 2017: Trends in Cancer
https://www.readbyqxmd.com/read/28716895/ctla4-promotes%C3%A2-tyk2-stat3-dependent-b-cell-oncogenecity
#11
Andreas Herrmann, Christoph Lahtz, Toshikage Nagao, Joo Y Song, Wing C Chan, Heehyoung Lee, Chanyu Yue, Thomas Look, Ronja Muelfarth, Wenzhao Li, Kurt Jenkins, John Williams, Lihua E Budde, Stephen J Forman, Larry W Kwak, Thomas Blankenstein, Hua Yu
Cytotoxic T lymphocyte-associated antigen 4 (CTLA4) is a well-established immune checkpoint for antitumor immune responses. The pro-tumorigenic function of CTLA4 is believed to be limited to T cell inhibition by countering the activity of the T cell co-stimulating receptor CD28. However, as we demonstrate here, there are two additional roles for CTLA4 in cancer, including via CTLA4 overexpression in diverse B cell lymphomas and in melanoma-associated B cells. CTLA4-CD86 ligation recruited and activated the JAK family member Tyk2, resulting in STAT3 activation and expression of genes critical for cancer immunosuppression and tumor growth and survival...
July 17, 2017: Cancer Research
https://www.readbyqxmd.com/read/28716148/prevalence-of-plasma-autoantibody-against-cancer-testis-antigen-ny-eso-1-in-htlv-1-infected-individuals-with-different-clinical-status
#12
Yasuo Shiohama, Tadasuke Naito, Toshio Matsuzaki, Reiko Tanaka, Takeaki Tomoyose, Hiroshi Takashima, Takuya Fukushima, Yuetsu Tanaka, Mineki Saito
BACKGROUND: Detection of specific immune responses against cancer/testis antigen NY-ESO-1 was recently reported in patients with adult T-cell leukemia/lymphoma (ATL) and human T-cell leukemia virus type 1 (HTLV-1)-infected asymptomatic carriers (ACs). However, the relationship of the responses with the HTLV-1 proviral load (PVL) and the levels of viral gene expression remain unclear. FINDINGS: We measured plasma levels of autoantibodies to NY-ESO-1 immunogenic tumor antigen in HTLV-1-infected individuals with different clinical status, and in healthy controls...
July 17, 2017: Virology Journal
https://www.readbyqxmd.com/read/28713071/association-of-il-2-330t-g-and-il-10-1082a-g-genetic-polymorphisms-with-b-nhl-in-a-cohort-of-egyptians
#13
Hala Aly Abdel Rahman, Mervat Mamdooh Khorshied, Ola Mohamed Reda Khorshid, Heba Mahmoud Mourad
OBJECTIVE: Polymorphisms in IL-2 and IL-10 genes have been known to be associated with increased risk of different immune-dysregulated disorders and cancer as Non Hodgkin Lymphoma (NHL). The aim of the current study was to investigate the possible association between IL-2-330T/G and IL-10-1082A/G genetic variations and B-cell NHL in a cohort of Egyptians. MATERIALS AND METHODS: Genotyping of the candidate genetic variations was performed by polymerase chain reaction (PCR) technique for 100 adult B-NHL patients and 100 age and sex matched healthy blood donors as controls...
July 17, 2017: Turkish Journal of Haematology: Official Journal of Turkish Society of Haematology
https://www.readbyqxmd.com/read/28708284/cd20-specific-immunoligands-engaging-nkg2d-enhance-%C3%AE-%C3%AE-t-cell-mediated-lysis-of-lymphoma-cells
#14
Matthias Peipp, Daniela Wesch, Hans-Heinrich Oberg, Sebastian Lutz, Anja Muskulus, Jan G J van de Winkel, Paul W H I Parren, Renate Burger, Andreas Humpe, Dieter Kabelitz, Martin Gramatzki, Christian Kellner
Human γδ T cells are innate-like T cells which are able to kill a broad range of tumor cells and thus may have potential for cancer immunotherapy. The activating receptor natural killer group 2 member D (NKG2D) plays a key role in regulating immune responses driven by γδ T cells. Here, we explored whether recombinant immunoligands consisting of a CD20 single-chain fragment variable (scFv) linked to a NKG2D ligand, either MHC class I chain-related protein A (MICA) or UL16 binding protein 2 (ULBP2), could be employed to engage γδ T cells for tumor cell killing...
July 14, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28707331/epstein-barr-virus-lytic-cycle-involvement-in-diffuse-large-b-cell-lymphoma
#15
Melina Cohen, Aldana Georgina Vistarop, Fuad Huaman, Marina Narbaitz, Fernanda Metrebian, Elena De Matteo, María Victoria Preciado, Paola Andrea Chabay
Epstein-Barr virus (EBV)-mediated B cell transformation is achieved predominantly through the action of latent proteins, but recent evidence suggests that lytic EBV replication has also a certain pathogenic role in lymphomagenesis, at least in the early phases of cell transformation. Particularly, in diffuse large B cell lymphoma (DLBCL), the EBV lytic cycle is by and large unexplored, so to disclose lytic cell contribution to lymphomagenesis, our aim was to evaluate viral early and late lytic gene expression in relation to several immune response markers in a series of EBV+ DLBCL from Argentina...
July 14, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28707270/profiling-of-cellular-microrna-responses-during-the-early-stages-of-kshv-infection
#16
Hosni A M Hussein, Shaw M Akula
Kaposi's sarcoma-associated herpesvirus (KSHV) causes a variety of cancers, including Kaposi's sarcoma (KS), primary effusion lymphoma (PEL), and multicentric Castleman disease (MCD). Host cellular microRNAs (miRNAs) play important post-transcriptional regulatory roles in gene expression and can greatly influence virus-host cell interactions. This study investigated cellular miRNA expression profiles operating in response to early stages of KSHV infection of human Burkitt lymphoma B cells (BJAB). We employed deep sequencing to analyze miRNA expression in KSHV-infected BJAB cells 15 min post infection (PI) and compared this to uninfected BJAB cells...
July 13, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28707167/supportive-care-for-patients-undergoing-immunotherapy
#17
Bernardo Leon Rapoport, Ronwyn van Eeden, Vincent Sibaud, Joel B Epstein, Jean Klastersky, Matti Aapro, Devan Moodley
Immune checkpoint inhibitors, a new class of cancer therapeutic agents, play an important role in the management of melanoma, NSCLC, and other malignancies. A workshop organized by three MASCC Study Groups: Oral Care, Skin Toxicities, and Neutropenia, Infection, and Myelosuppression during the MASCC Annual Meeting held in Adelaide, Australia on 23-25 June, 2016 focused on the new class of anti-cancer therapeutic agents. Topics in the workshop included the mechanism of action and clinical uses of immune anti-CTL4 and anti-PD1 antibodies, checkpoint inhibitor toxicities, including skin adverse events, gastrointestinal toxicities, oral complications, pulmonary toxicities, and endocrinological and immune-related infections...
July 13, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28704654/persistent-kshv-infection-increases-ebv-associated-tumor-formation-in%C3%A2-vivo-via-enhanced-ebv-lytic-gene-expression
#18
Donal McHugh, Nicole Caduff, Mario Henrique M Barros, Patrick C Rämer, Ana Raykova, Anita Murer, Vanessa Landtwing, Isaak Quast, Christine T Styles, Michael Spohn, Adeola Fowotade, Henri-Jacques Delecluse, Alexandra Papoudou-Bai, Yong-Moon Lee, Jin-Man Kim, Jaap Middeldorp, Thomas F Schulz, Ethel Cesarman, Andrea Zbinden, Riccarda Capaul, Robert E White, Martin J Allday, Gerald Niedobitek, David J Blackbourn, Adam Grundhoff, Christian Münz
The human tumor viruses Epstein-Barr virus (EBV) and Kaposi sarcoma-associated herpesvirus (KSHV) establish persistent infections in B cells. KSHV is linked to primary effusion lymphoma (PEL), and 90% of PELs also contain EBV. Studies on persistent KSHV infection in vivo and the role of EBV co-infection in PEL development have been hampered by the absence of small animal models. We developed mice reconstituted with human immune system components as a model for KSHV infection and find that EBV/KSHV dual infection enhanced KSHV persistence and tumorigenesis...
July 12, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28701882/comparison-of-anticancer-activities-of-korean-red-ginseng-derived-fractions
#19
Kwang-Soo Baek, Young-Su Yi, Young-Jin Son, Deok Jeong, Nak Yoon Sung, Adithan Aravinthan, Jong-Hoon Kim, Jae Youl Cho
BACKGROUND: Korean Red Ginseng (KRG) is an ethnopharmacological plant that is traditionally used to improve the body's immune functions and ameliorate the symptoms of various diseases. However, the antitumorigenic effects of KRG and its underlying molecular and cellular mechanisms are not fully understood in terms of its individual components. In this study, in vitro and in vivo antitumorigenic activities of KRG were explored in water extract (WE), saponin fraction (SF), and nonsaponin fraction (NSF)...
July 2017: Journal of Ginseng Research
https://www.readbyqxmd.com/read/28698206/expression-of-pim-kinases-in-reed-sternberg-cells-fosters-immune-privilege-and-tumor-cell-survival-in-hodgkin-lymphoma
#20
Maciej Szydłowski, Monika Prochorec-Sobieszek, Anna Szumera-Cieckiewicz, Edyta Derezinska, Grazyna Hoser, Danuta Wasilewska, Olga Szymanska-Giemza, Ewa Jabłonska, Emilia Białopiotrowicz, Tomasz Sewastianik, Anna Polak, Wojciech Czardybon, Michał Gałezowski, Renata Windak, Jan Maciej Zaucha, Krzysztof Warzocha, Krzysztof Brzózka, Przemysław Juszczynski
Reed-Sternberg (RS) cells of classical Hodgkin lymphoma (cHL) express multiple immunoregulatory proteins that shape the cHL microenvironment and allow tumor cells to evade immune surveillance. Expression of certain immunoregulatory proteins is modulated by pro-survival transcription factors, such as NFκB and STATs. Since these factors also induce expression of the oncogenic PIM1/2/3 serine/threonine kinases, and since PIMs modulate transcriptional activity of NFκB and STATs, we hypothesized that these kinases support RS cell survival and foster their immune privilege...
July 11, 2017: Blood
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