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https://www.readbyqxmd.com/read/28806779/a-mutation-in-nischarin-causes-otitis-media-via-limk1-and-nf-%C3%AE%C2%BAb-pathways
#1
Michael Crompton, Tom Purnell, Hayley E Tyrer, Andrew Parker, Greg Ball, Rachel E Hardisty-Hughes, Richard Gale, Debbie Williams, Charlotte H Dean, Michelle M Simon, Ann-Marie Mallon, Sara Wells, Mahmood F Bhutta, Martin J Burton, Hilda Tateossian, Steve D M Brown
Otitis media (OM), inflammation of the middle ear (ME), is a common cause of conductive hearing impairment. Despite the importance of the disease, the aetiology of chronic and recurrent forms of middle ear inflammatory disease remains poorly understood. Studies of the human population suggest that there is a significant genetic component predisposing to the development of chronic OM, although the underlying genes are largely unknown. Using N-ethyl-N-nitrosourea mutagenesis we identified a recessive mouse mutant, edison, that spontaneously develops a conductive hearing loss due to chronic OM...
August 14, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28806028/treatment-of-peritonsillar-abscess-in-immunosuppressed-patients
#2
Jed H Assam, William C Spanos
Peritonsillar abscess (PTA) is a common pathology in otolaryngology emergency. The treatment of PTA is usually bedside drainage or surgical removal of the tonsils (Quincy tonsillectomy) in combination with antibiotic treatment. However, patients with immune suppression might have a more difficult treatment course. Such difficulties may be further magnified within older patients. This case report will describe successful multi-modality treatment of two separate incidents of PTA developing in the context of immunosuppression...
July 2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/28805084/covalent-immobilisation-of-transglutaminase-stability-and-applications-in-protein-pegylation
#3
Antonella Grigoletto, Anna Mero, Hiroki Yoshioka, Oddone Schiavon, Gianfranco Pasut
Microbial transglutaminase enzyme (mTGase) is an extremely useful enzyme that is increasingly employed in the food and pharmaceutical industries and as a tool for protein modification and tagging. The current study describes how we immobilised mTGase (iTGase) on a solid support to improve its stability during the PEGylation process by which polyethylene glycol chains are attached to protein and peptide drugs. When the enzyme was immobilised at the N-terminal sequence on agarose beads, it retained more than 53% of its starting activity...
August 13, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28804660/large-granular-lymphocytic-leukemia-a-report-of-response-to-rituximab
#4
Uroosa Ibrahim, Sara Parylo, Shiksha Kedia, Shafinaz Hussein, Jean Paul Atallah
Large granular lymphocytic (LGL) leukemia is a rare form of low grade leukemia characterized by large cytotoxic T cells or natural killer cells on morphological examination. Immunosuppressive therapy is employed as first-line therapy. Treatment options in refractory cases include the anti-CD52 antibody alemtuzumab and purine analogues. We report a rare case that responded to the anti-CD20 monoclonal antibody rituximab. A 77-year-old female presented with complaints of fatigue, fever, and chills of 3 months' duration...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28804549/treatment-effect-of-low-intensity-pulsed-ultrasound-on-leukopenia-induced-by-cyclophosphamide-in-rabbits
#5
Baoru Liu, Yueping Luo, Dong Luo, Weichen Zhou, Yu Zhang, Ruixin He, Junshu Li, Yong Wang, Yan Wang, Wenzhi Chen
OBJECTIVE: This study aims to examine the effects of low intensity pulsed ultrasound (LIPUS) on leukopenia induced by cyclophosphamide in a rabbit model. METHODS: The leukopenia model in New Zealand rabbit was established by injecting cyclophosphamide into the ear vein. Forty leukopenia model rabbits were randomly allocated to control group (n = 20) and LIPUS group (n = 20). LIPUS group underwent 20 minutes of daily ultrasound treatment at femoral metaphysis for 7 days while control group received sham treatment...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28802852/autophagy-regulates-accumulation-and-functional-activity-of-granulocytic-myeloid-derived-suppressor-cells-via-stat3-signaling-in-endotoxin-shock
#6
Guanjun Dong, Chuanping Si, Qingqing Zhang, Fenglian Yan, Chunxia Li, Hui Zhang, Qun Ma, Jun Dai, Zhihua Li, Hui Shi, Bo Wang, Junfeng Zhang, Jiankuo Ming, Yuan Hu, Shuo Geng, Yao Zheng, Liwu Li, Huabao Xiong
Autophagy extensively participates in immune responses and inflammatory diseases. Myeloid-derived suppressor cells (MDSCs) are derived from CD11b(+)Gr1(+) cells under pathological conditions and play an immunosuppressive role in the pathogenesis of cancer and inflammatory diseases. However, the role of autophagy in regulating the accumulation and activity of MDSCs remains unknown. In the present study, we evaluated the effects and mechanisms of autophagy on regulating accumulation and activity of MDSCs. We first found that granulocytic MDSCs (G-MDSCs), but not monocytic MDSCs (M-MDSCs), were accumulated in mice challenged by lipopolysaccharide (LPS) and showed an elevated autophagy activity...
August 9, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28801752/biosimilar-g-csf-versus-filgrastim-and-lenograstim-in-healthy-unrelated-volunteer-hematopoietic-stem-cell-donors
#7
Roiya Farhan, Elżbieta Urbanowska, Hanna Zborowska, Małgorzata Król, Maria Król, Tigran Torosian, Iwona Piotrowska, Krzysztof Bogusz, Kamila Skwierawska, Wiesław Wiktor-Jędrzejczak, Emilian Snarski
The World Marrow Donor Organization recommends original granulocyte-colony stimulating factor (G-CSF) for the mobilization of stem cells in healthy unrelated hematopoietic stem cell donors. We report the comparison of a biosimilar G-CSF (Zarzio) with two original G-CSFs (filgrastim and lenograstim) in mobilization in unrelated donors. We included data of 313 consecutive donors who were mobilized during the period from October 2014 to March 2016 at the Medical University of Warsaw. The primary endpoints of this study were the efficiency of CD34+ cell mobilization to the circulation and results of the first apheresis...
August 11, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28801379/historical-perspectives-current-status-and-ethical-issues-in-granulocyte-transfusion
#8
REVIEW
Kimberly Klein, Brian Castillo
The goal of this commentary is to provide a historical aspect of granulocyte transfusion, present practices in granulocyte transfusion, accentuate the complexity of the issue, and foster contemplation of ethical issues assimilated with this practice. Clinical aspects of granulocyte transfusion in the light of ethical issues are also discussed.
August 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28801026/quadruple-immunotherapy-of-bacillus-calmette-gu%C3%A3-rin-interferon-interleukin-2-and-granulocyte-macrophage-colony-stimulating-factor-as-salvage-therapy-for-non-muscle-invasive-bladder-cancer
#9
Ryan L Steinberg, Kenneth G Nepple, Kyla N Velaer, Lewis J Thomas, Michael A O'Donnell
BACKGROUND: Bacillus Calmette-Guérin (BCG) is the most effective initial intravesical therapy for high-grade non-muscle invasive bladder cancer, but many patients still fail. Combination intravesical BCG and interferon (IFN) will salvage some patients but results remain suboptimal. OBJECTIVE: We hypothesized that further immunostimulation with intravesical interleukin-2 and subcutaneous granulocyte-macrophage colony-stimulating factor may improve response to intravesical BCG and IFN in patient with prior BCG failure(s)...
August 8, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28800924/the-influence-of-macrophage-growth-factors-on-theiler-s-murine-encephalomyelitis-virus-tmev-infection-and-activation-of-macrophages
#10
Karin M Schneider, Neva B Watson, Scott B Minchenberg, Paul T Massa
Macrophages are common targets for infection and innate immune activation by many pathogenic viruses including the neurotropic Theiler's Murine Encephalomyelitis Virus (TMEV). As both infection and innate activation of macrophages are key determinants of viral pathogenesis especially in the central nervous system (CNS), an analysis of macrophage growth factors on these events was performed. C3H mouse bone-marrow cells were differentiated in culture using either recombinant macrophage colony stimulating factor (M-CSF) or granulocyte-macrophage colony-stimulating factor (GM-CSF), inoculated with TMEV (BeAn) and analyzed at various times thereafter...
August 8, 2017: Cytokine
https://www.readbyqxmd.com/read/28800644/cytokine-and-hormonal-regulation-of-bone-marrow-immune-cell-wnt10b-expression
#11
Fraser L Collins, Naiomy Deliz Rios-Arce, Laura R McCabe, Narayanan Parameswaran
BACKGROUND & AIMS: Wnt10b is a crucial regulator of bone density through its ability to promote osteoblastogenesis. Parathyroid hormone has been shown to regulate Wnt10b expression in CD8+ T cells. However, the relative expression and other source(s) of Wnt10b in the bone marrow immune cells (BMICs) is unknown. Sex hormones and cytokines such as, estrogen and TNFα are critical regulators of bone physiology but whether they regulate BMIC Wnt10b expression is unclear. To determine the potential regulation of Wnt10b by estrogen and TNFα, we assessed Wnt10b expression by flow cytometry under estrogen- and TNFα-deficient conditions...
2017: PloS One
https://www.readbyqxmd.com/read/28799208/ccr2-monocytic-myeloid-derived-immunosuppressive-cells-m-mdsc-inhibit-collagen-degradation-and-promote-lung-fibrosis-by-producing-tgf-%C3%AE-1
#12
Astrid Lebrun, Sandra Lo Re, Mathilde Chantry, Xavier Izquierdo Carerra, Francine Uwambayinema, Doriana Ricci, Raynal Devosse, Saloua Ibouraadaten, Lisa Brombin, Mihaly Palmai-Pallag, Yousof Yakoub, Manolis Pasparakis, Dominique Lison, François Huaux
Monocytes infiltrating scar tissue are predominantly viewed as progenitor cells. Here, we show that tissue CCR2(+) monocytes possess specific immunosuppressive and pro-fibrotic functions. CCR2(+) monocytic cells are acutely recruited to the lung before the onset of silica-induced fibrosis in mice. These tissue monocytes are defined as monocytic-Myeloid-Derived Suppressor Cells (M-MDSC) because they significantly suppress T lymphocyte proliferation in vitro. M-MDSC collected from silica-treated mice also express TGF-β1, which stimulates lung fibroblasts to release TIMP-1, an inhibitor of metalloproteinase collagenolytic activity...
August 11, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28798364/characterization-of-circulating-low-density-neutrophils-intrinsic-properties-in-healthy-and-asthmatic-horses
#13
Nicolas Herteman, Amandine Vargas, Jean-Pierre Lavoie
Low-density neutrophils (LDNs) are a subset of neutrophils first described in the bloodstream upon pathological conditions, and recently, in the blood of healthy humans. LDNs may have an enhanced pro-inflammatory (low-density granulocytes, LDGs) or an immunosuppressive (Granulocytic myeloid-derived suppressor cells, G-MDSCs) profile. Whether these characteristics are specific to LDNs or related to disease states is unknown. Thus, we sought to investigate the properties of LDNs in both health and disease states, and to compare them to those of autologous normal-density neutrophils (NDNs)...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28797844/pd-1-pd-l1-blockade-enhances-the-efficacy-of-sa-gm-csf-surface-modified-tumor-vaccine-in-prostate-cancer
#14
Xiaojun Shi, Xinji Zhang, Jinlong Li, Hongfan Zhao, Lijun Mo, Xianghua Shi, Zhiming Hu, Jimin Gao, Wanlong Tan
Program death receptor-1 (PD-1)/program death ligand 1 (PD-L1) signaling plays an important role in tumor adaptive immune resistance. The streptavidin-granulocyte-macrophage colony stimulating factor (SA-GM-CSF) surface-modified tumor cells vaccine developed through our novel protein-anchor technology could significantly promote the activation of dendritic cells. Although GM-CSF vaccine could significantly increase the number of tumor-specific CD8(+)T-cells, the majority of these CD8(+)T-cells expressed PD-1...
August 8, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28797785/granulocyte-transfusions-a-critical-reappraisal
#15
REVIEW
Caterina Giovanna Valentini, Francesca Farina, Livio Pagano, Luciana Teofili
Granulocyte transfusions (GTs) are seldom used as a life-saving therapy for neutropenic patients with severe infections. Despite several compelling evidences of GT efficacy in retrospective and prospective case series, no study has been successful in demonstrating a definite advantage for recipients in controlled clinical trials. This review will critically revise some aspects emerging from the past experience which might have weakened the evidence of GT benefits. Some specific issues relevant to the efficacy of this therapeutic approach, such as the primary infection, the delivered doses and schedules, and the immunological effects of GTs, will be discussed...
August 7, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28797056/anaplasma-phagocytophilum-infection-modulates-expression-of-megakaryocyte-cell-cycle-genes-through-phosphatidylinositol-3-kinase-signaling
#16
Supreet Khanal, Hameeda Sultana, John D Catravas, Jason A Carlyon, Girish Neelakanta
Anaplasma phagocytophilum, the agent of human granulocytic anaplasmosis infects neutrophils and other cells from hematopoietic origin. Using human megakaryocytic cell line, MEG-01, we show that expression of cell cycle genes in these cells are altered upon A. phagocytophilum infection. Expression of several cell cycle genes in MEG-01 cells was significantly up regulated at early and then down regulated at later stages of A. phagocytophilum infection. Lactate dehydrogenase (LDH) assays revealed reduced cellular cytotoxicity in MEG-01 cells upon A...
2017: PloS One
https://www.readbyqxmd.com/read/28796990/adsorptive-depletion-of-myeloid-lineage-leucocytes-as-remission-induction-therapy-in-patients-with-ulcerative-colitis-after-failure-of-first-line-medications-results-from-a-three-year-real-world-clinical-practice
#17
Takayuki Iida, Kentaro Ikeya, Masaichi Kato, Jinro Abe, Masayoshi Yamamoto, Fumitoshi Watanabe, Ken Sugimoto, Hiroyuki Hanai
BACKGROUND/AIMS: In patients with active ulcerative colitis (UC), pharmacologics, although initially effective in most patients, are associated with refractoriness, loss of response or unfavourable side effects as additional morbidity factors. Depletion of myeloid lineage leucocytes like the CD14(+)CD16(+) monocyte phenotype, which is a major source of tumour necrosis factor-α, by granulocyte/monocyte apheresis (GMA) if effective, is also known to be free from side effects. METHODS: In clinical practice setting, 77 consecutive patients with moderate to severe UC, who failed to respond to first-line medications received GMA with the Adacolumn as remission induction therapy...
August 11, 2017: Digestion
https://www.readbyqxmd.com/read/28794968/successful-salvage-chemotherapy-and-allogeneic-transplantation-of-an-acute-myeloid-leukemia-patient-with-disseminated-fusarium-solani-infection
#18
Sheenu Sheela, Sawa Ito, Jeffrey R Strich, Maura Manion, Celina Montemayor-Garcia, Hao-Wei Wang, Karolyn A Oetjen, Kamile A West, Austin J Barrett, Mark Parta, Juan Gea-Banacloche, Steven M Holland, Christopher S Hourigan, Catherine Lai
Disseminated Fusarium infection is associated with high mortality in immunocompromised patients. Patients with acute myeloid leukemia (AML) often have an extended duration of neutropenia during intensive induction chemotherapy, consolidation chemotherapy, and hematopoietic stem cell transplantation (SCT). There is no consensus regarding management of invasive disseminated Fusarium infections in the setting of prolonged neutropenia (Tortorano et al., 2014) [1]. We report a case of disseminated Fusarium in a patient with relapsed AML who underwent successful chemotherapy and haplo-identical allogeneic SCT with administration of granulocyte colony stimulating factor (G-CSF) and granulocyte infusions...
2017: Leukemia Research Reports
https://www.readbyqxmd.com/read/28794406/the-non-coding-rna-landscape-of-human-hematopoiesis-and-leukemia
#19
Adrian Schwarzer, Stephan Emmrich, Franziska Schmidt, Dominik Beck, Michelle Ng, Christina Reimer, Felix Ferdinand Adams, Sarah Grasedieck, Damian Witte, Sebastian Käbler, Jason W H Wong, Anushi Shah, Yizhou Huang, Razan Jammal, Aliaksandra Maroz, Mojca Jongen-Lavrencic, Axel Schambach, Florian Kuchenbauer, John E Pimanda, Dirk Reinhardt, Dirk Heckl, Jan-Henning Klusmann
Non-coding RNAs have emerged as crucial regulators of gene expression and cell fate decisions. However, their expression patterns and regulatory functions during normal and malignant human hematopoiesis are incompletely understood. Here we present a comprehensive resource defining the non-coding RNA landscape of the human hematopoietic system. Based on highly specific non-coding RNA expression portraits per blood cell population, we identify unique fingerprint non-coding RNAs-such as LINC00173 in granulocytes-and assign these to critical regulatory circuits involved in blood homeostasis...
August 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28792702/a-modified-combination-of-two-methods-for-isolation-of-polymorphonuclear-granulocytes-from-human-blood-for-polymerase-chain-reaction-pcr
#20
Alfredo Martinez, Robert Prizont, Rosario Anadon, Federico Klosowski
BACKGROUND: The aim of the study was to determine a rapid and simple method for isolation of polymorphonuclear (PMN) granulocytes from human blood appropriate for PCR of extracted DNA. METHODS: A modification of the combined dextran plus Ficoll-Hypaque methods was the final method used in 41 samples of normal white cells from humans. The changes encompassed a lower dextran-blood ratio (2:1), a shorter centrifugation time of leukocytes, a small volume of Ficoll-Hypaque suspension, and a decreased speed in the last centrifugation...
July 1, 2017: Clinical Laboratory
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