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https://www.readbyqxmd.com/read/29777767/biglycan-is-a-new-high-affinity-ligand-for-cd14-in-macrophages
#1
Heiko Roedig, Madalina V Nastase, Helena Frey, Kristin Moreth, Jinyang Zeng-Brouwers, Chiara Poluzzi, Louise Tzung-Harn Hsieh, Christian Brandts, Simone Fulda, Malgorzata Wygrecka, Liliana Schaefer
Sterile inflammation is a therapeutic target in many diseases where it represents an important initiator of disease progression. However, the detailed mechanisms underlying its evolution and biological relevance are not yet completely elucidated. Biglycan, a prototype extracellular matrix-derived damage-associated molecular pattern, mediates sterile inflammation in macrophages through Toll-like receptor (TLR) 2 and/or TLR4-dependent signaling pathways. Here we discovered that soluble biglycan is a novel high-affinity ligand for CD14, a well-known GPI-anchored co-receptor for TLRs...
May 16, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29774998/-the-expressions-and-correlations-of-il-10-cd14-and-cd68-in-laryngal-squamous-cell-carcinoma
#2
S Zhang, H Huangfu, B Q Wang, W Gao, L N Wu, Y Li, W Y Li
Objective: The aim of this study is to investigate the distribution of IL-10, CD14 and CD68 in the tumor microenvironment of LSCC with the clinicopathologic factors. Method: We detected the expressions of IL-10, CD14 and CD68 in 46 primary LSCC tumor tissues by immunohistochemistry staining and explore the relationship between them and clinicopathologic factors. Result: We found that the expressions of IL-10, CD14 and CD68 were significantly correlated with clinical stage and T stage ( P <0.01). IL-10 and CD14 were correlated with lymph node metastasis ( P <0...
June 5, 2017: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29772249/evaluation-of-the-effect-of-storage-condition-on-cell-extraction-and-flow-cytometric-analysis-from-intestinal-biopsies
#3
Manon E Wildenberg, Marjolijn Duijvestein, Liset Westera, Tanja van Viegen, Christianne J Buskens, Jarmila D W van der Bilt, Larry Stitt, Vipul Jairath, Brian G Feagan, Niels Vande Casteele
BACKGROUND: Flow cytometric (FC) analysis of intestinal tissue biopsies requires prompt cell isolation and processing to prevent cell death and generate valid data. We examined the effect of storage conditions prior to cell isolation and FC on viable cell yield and the proportions of immune cell phenotypes from intestinal biopsies. METHODS: Biopsies (N = 224) from inflamed or non-inflamed ileal and/or colonic tissue from three patients with Crohn's disease were processed and analyzed immediately in duplicate, or stored under different conditions...
May 14, 2018: Journal of Immunological Methods
https://www.readbyqxmd.com/read/29769838/selected-biomarkers-correlate-with-the-origin-and-severity-of-sepsis
#4
Michal Holub, Olga Džupová, Michaela Růžková, Alžběta Stráníková, Eva Bartáková, Jan Máca, Jiří Beneš, Heiko Herwald, Ondřej Beran
The microbial etiology and source of sepsis influence the inflammatory response. Therefore, the plasma levels of cytokines (IL-6, IL-8, and IL-10), chemokines (CCL2/MCP-1, MIP-1 β ), heparin-binding protein (HBP), soluble CD14 (sCD14), and cortisol were analyzed in blood from septic patients obtained during the first 96 hours of intensive care unit hospitalization. The etiology was established in 56 out of a total of 62 patients enrolled in the study. Plasma concentrations of MCP-1, sCD14, IL-6, and IL-10 were significantly higher in patients with community-acquired pneumonia (CAP; n = 10) and infective endocarditis (IE; n = 11) compared to those with bacterial meningitis (BM; n = 18)...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29769726/microglial-control-of-astrocytes-in-response-to-microbial-metabolites
#5
Veit Rothhammer, Davis M Borucki, Emily C Tjon, Maisa C Takenaka, Chun-Cheih Chao, Alberto Ardura-Fabregat, Kalil Alves de Lima, Cristina Gutiérrez-Vázquez, Patrick Hewson, Ori Staszewski, Manon Blain, Luke Healy, Tradite Neziraj, Matilde Borio, Michael Wheeler, Loic Lionel Dragin, David A Laplaud, Jack Antel, Jorge Ivan Alvarez, Marco Prinz, Francisco J Quintana
Microglia and astrocytes modulate inflammation and neurodegeneration in the central nervous system (CNS)1-3 . Microglia modulate pro-inflammatory and neurotoxic activities in astrocytes, but the mechanisms involved are not completely understood4,5 . Here we report that TGFα and VEGF-B produced by microglia regulate the pathogenic activities of astrocytes in the experimental autoimmune encephalomyelitis (EAE) mouse model of multiple sclerosis. Microglia-derived TGFα acts via the ErbB1 receptor in astrocytes to limit their pathogenic activities and EAE development...
May 16, 2018: Nature
https://www.readbyqxmd.com/read/29769086/inflammatory-pattern-of-the-infrapatellar-fat-pad-in-dogs-with-canine-cruciate-ligament-disease
#6
Manuel R Schmidli, Bettina Fuhrer, Nadine Kurt, David Senn, Michaela Drögemüller, Ulrich Rytz, David E Spreng, Simone Forterre
BACKGROUND: Despite the importance of inflammation during the pathogenesis of cranial cruciate ligament disease (CCLD) in dogs and despite the latest knowledge suggesting a significant role of adipose tissue in osteoarthritis, the infrapatellar fat pad (IFP) was up to now mostly disregarded in veterinary investigations. In the present study, the inflammatory activity of the IFP, the main adipose structure within the stifle joint, was thoroughly investigated to evaluate its potential impact in the pathogenesis of this common disease of our canine companions...
May 16, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29767743/premeal-low-fat-yogurt-consumption-reduces-postprandial-inflammation-and-markers-of-endotoxin-exposure-in-healthy-premenopausal-women-in-a-randomized-controlled-trial
#7
Ruisong Pei, Diana M DiMarco, Kelley K Putt, Derek A Martin, Chureeporn Chitchumroonchokchai, Richard S Bruno, Bradley W Bolling
Background: Metabolic endotoxemia is associated with obesity and contributes to postprandial inflammation. Objective: We aimed to determine if low-fat yogurt consumption prevents postprandial inflammation and dysmetabolism in healthy women by inhibiting biomarkers of metabolic endotoxemia. Methods: Premenopausal women defined as obese and nonobese [body mass index (BMI, in kg/m2) 30-40 and 18.5-27, respectively, n = 120] were randomly assigned to consume 339 g of low-fat yogurt (YN, yogurt nonobese; YO, yogurt obese) or 324 g of soy pudding (CN, control nonobese; CO, control obese) for 9 wk (n = 30/group)...
May 15, 2018: Journal of Nutrition
https://www.readbyqxmd.com/read/29764839/lineage-restriction-analyses-in-chip-indicate-myeloid-bias-for-tet2-and-multipotent-stem-cell-origin-for-dnmt3a
#8
Manuel Buscarlet, Sylvie Provost, Yassamin Feroz Zada, Vincent Bourgoin, Luigina Mollica, Marie-Pierre Dubé, Lambert Busque
We analyzed DNA from PMN (granulocytes), CD14+ (monocytes), CD19+ (B-cells) and CD3+ (T-cells) of 107 individuals with clonal hematopoiesis of indeterminate potential (CHIP) to perform lineage restriction analysis of different gene mutations. Individuals were aged 55 to 96 (mean age: 70.0). Three lineage categories were defined: myeloid (PMN±monocytes), myelolympho-B (myeloid and B-cells), multipotent (myeloid, B and T-cells). Six individuals with aberrant patterns were excluded from analysis. Fifty-six had a single DNMT3A mutation, 24 had a single TET2 mutation, 7 had a single mutation in other genes (JAK2, ASXL1, CBL or TP53), and 14 had multiple mutations...
May 15, 2018: Blood
https://www.readbyqxmd.com/read/29764573/-clinical-and-laboratory-characteristics-of-juvenile-myelomonocytic-leukemia
#9
Yuan-Yuan Wu, Sheng-Yang Cai, Wei Huang, Si-Si Li, Wei Li, Ao Dong
OBJECTIVE: To study the clinical and laboratory characteristics of juvenile myelomonocytic leukemia (JMML). METHODS: The clinical characteristics and laboratory results were retrospectively analyzed in 10 children with newly diagnosed JMML. They were compared with those of 28 children with myelodysplastic syndrome (MDS) and 44 children with chronic myeloid leukemia (CML). RESULTS: Compared with the children with CML or MDS, the children with JMML had significantly higher rates of skin rashes, ecchymosis, and lymphadenectasis, a significantly lower serum cholinesterase (ChE) level, and a significantly higher fetal hemoglobin level (P&lt;0...
May 2018: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29763678/acute-aerobic-exercise-induces-a-preferential-mobilisation-of-plasmacytoid-dendritic-cells-into-the-peripheral-blood-in-man
#10
Frankie F Brown, John P Campbell, Alex J Wadley, James P Fisher, Sarah Aldred, James E Turner
Dendritic cells (DCs) are important sentinel cells of the immune system responsible for presenting antigen to T cells. Exercise is known to cause an acute and transient increase in the frequency of DCs in the bloodstream in humans, yet there are contradictory findings in the literature regarding the phenotypic composition of DCs mobilised during exercise, which may have implications for immune regulation and health. Accordingly, we sought to investigate the composition of DC sub-populations mobilised in response to acute aerobic exercise...
May 12, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29761383/culture-of-human-monocyte-derived-macrophages
#11
Aoife Kelly, Aleksander M Grabiec, Mark A Travis
The study of human macrophages is often hampered by access to tissue and inability of this cell type to survive in vitro following isolation. The culture of human monocyte-derived macrophages (MDMs) represents a tool to study macrophages, with monocytes known to give rise to tissue macrophages influenced by certain environmental cues. Here we describe a method of culturing monocyte-derived macrophages from CD14+ blood monocytes and polarization toward different macrophage phenotypes.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29760187/lipopolysaccharide-lps-binding-protein-stimulates-cd14-dependent-toll-like-receptor-4-internalization-and-lps-induced-tbk1-ikk%C3%AF%C2%B5-irf3-axis-activation
#12
Hiroki Tsukamoto, Shino Takeuchi, Kanae Kubota, Yohei Kobayashi, Sao Kozakai, Ippo Ukai, Ayumi Shichiku, Misaki Okubo, Muneo Numasaki, Yoshitomi Kanemitsu, Yotaro Matsumoto, Tomonori Nochi, Kouichi Watanabe, Hisashi Aso, Yoshihisa Tomioka
Toll-like receptor 4 (TLR4) is an indispensable immune receptor for lipopolysaccharide (LPS), a major component of the Gram-negative bacterial cell wall. Following LPS stimulation, TLR4 transmits the signal from the cell surface and becomes internalized in an endosome. However, the spatial regulation of TLR4 signaling is not fully understood. Here, we investigated the mechanisms of LPS-induced TLR4 internalization and clarified the roles of the extracellular LPS-binding molecules, LPS-binding protein (LBP), and glycerophosphatidylinositol-anchored protein (CD14)...
May 14, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29755473/differential-effect-of-viable-versus-necrotic-neutrophils-on-mycobacterium-tuberculosis-growth-and-cytokine-induction-in-whole-blood
#13
David M Lowe, Julie Demaret, Nonzwakazi Bangani, Justine K Nakiwala, Rene Goliath, Katalin A Wilkinson, Robert J Wilkinson, Adrian R Martineau
Neutrophils exert both positive and negative influences on the host response to tuberculosis, but the mechanisms by which these differential effects are mediated are unknown. We studied the impact of live and dead neutrophils on the control of Mycobacterium tuberculosis using a whole blood bioluminescence-based assay, and assayed supernatant cytokine concentrations using Luminex™ technology and ELISA. CD15+ granulocyte depletion from blood prior to infection with M. tuberculosis -lux impaired control of mycobacteria by 96 h, with a greater effect than depletion of CD4+, CD8+, or CD14+ cells ( p  < 0...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29755470/cd36-shunts-eicosanoid-metabolism-to-repress-cd14-licensed-interleukin-1%C3%AE-release-and-inflammation
#14
Karina F Zoccal, Luiz G Gardinassi, Carlos A Sorgi, Alyne F G Meirelles, Karla C F Bordon, Isaias Glezer, Palmira Cupo, Alessandra K Matsuno, Valdes R Bollela, Eliane C Arantes, Francisco S Guimarães, Lúcia Helena Faccioli
Interleukin (IL)-1β is a potential target for treatment of several inflammatory diseases, including envenomation by the scorpion Tityus serrulatus . In this context, bioactive lipids such as prostaglandin (PG)E2 and leukotriene (LT)B4 modulate the production of IL-1β by innate immune cells. Pattern recognition receptors (PRRs) that perceive T. serrulatus venom (TsV), and orchestrate LTB4 , PGE2 , and cyclic adenosine monophosphate (cAMP) production to regulate IL-1β release are unknown. Furthermore, molecular mechanisms driving human cell responses to TsV remain uncharacterized...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29752990/fecal-bacteria-from-crohn-s-disease-patients-more-potently-activated-nod-like-receptors-and-toll-like-receptors-in-macrophages-in-an-il-4-repressible-fashion
#15
Jun Gu, Gang Liu, Junjie Xing, Haihan Song, Zhongchuan Wang
Crohn's disease (CD) is characterized by a pathogenic intestinal inflammation mediated by a Th1-skewed immune system and a dysregulated intestinal mucosal community. In this study, we investigated the role of bacteria on the activation and function of monocytes, and its association with CD pathogenesis. To this end, fecal bacteria from CD patients and healthy controls were collected and used to stimulate autologous circulating monocytes. Fecal bacteria from CD patients were more effective at upregulating NOD2, NLRP3, TLR2, and TLR4 expression than fecal bacteria from healthy controls...
May 9, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29750804/temporal-compartmental-changes-in-viral-rna-and-neuronal-injury-in-a-primate-model-of-neuroaids
#16
R Gilberto González, Robert Fell, Julian He, Jennifer Campbell, Tricia H Burdo, Patrick Autissier, Lakshmanan Annamalai, Faramarz Taheri, Termara Parker, Jeffrey D Lifson, Elkan F Halpern, Mark Vangel, Eliezer Masliah, Susan V Westmoreland, Kenneth C Williams, Eva-Maria Ratai
Despite the advent of highly active anti-retroviral therapy HIV-associated neurocognitive disorders (HAND) continue to be a significant problem. Furthermore, the precise pathogenesis of this neurodegeneration is still unclear. The objective of this study was to examine the relationship between infection by the simian immunodeficiency virus (SIV) and neuronal injury in the rhesus macaque using in vivo and postmortem sampling techniques. The effect of SIV infection in 23 adult rhesus macaques was investigated using an accelerated NeuroAIDS model...
2018: PloS One
https://www.readbyqxmd.com/read/29748373/slan-monocytes-and-macrophages-mediate-cd20-dependent-b-cell-lymphoma-elimination-via-adcc-and-adcp
#17
William Vermi, Alessandra Micheletti, Giulia Finotti, Cristina Tecchio, Federica Calzetti, Sara Costa, Mattia Bugatti, Stefano Calza, Claudio Agostinelli, Stefano Pileri, Piera Balzarini, Alessandra Tucci, Giuseppe Rossi, Lara Furlani, Giuseppe Todeschini, Alberto Zamò, Fabio Facchetti, Luisa Lorenzi, Silvia Lonardi, Marco A Cassatella
Terminal tissue differentiation and function of slan+ monocytes in cancer is largely unexplored. Our recent studies demonstrated that slan+ monocytes differentiate into a distinct subset of dendritic cells (DC) in human tonsils and that slan+ cells colonize metastatic carcinoma-draining lymph nodes. Herein, we report by retrospective analysis of multi-institutional cohorts that slan+ cells infiltrate various types of non-Hodgkin lymphomas (NHL), particularly the diffuse large B-cell lymphoma (DLBCL) group, including the most aggressive, nodal and extra-nodal, forms...
May 10, 2018: Cancer Research
https://www.readbyqxmd.com/read/29745411/time-lapse-monitoring-of-tlr2-ligand-internalization-with-newly-developed-fluorescent-probes
#18
Yohei Arai, Kouhei Yokoyama, Yuki Kawahara, Qi Feng, Ippei Ohta, Atsushi Shimoyama, Shinsuke Inuki, Koichi Fukase, Kazuya Kabayama, Yukari Fujimoto
As a mammalian toll-like receptor family member protein, TLR2 recognizes lipoproteins from bacteria and modulates the immune response by inducing the expression of various cytokines. We have developed fluorescence-labeled TLR2 ligands with either hydrophilic or hydrophobic fluorescence groups. The labeled ligands maintained the inflammatory IL-6 induction activity and enabled us to observe the internalization and colocalization of the TLR2 ligands using live-cell imaging. The time-lapse monitoring in the live-cell imaging of the fluorescence-labeled TLR2 ligand showed that TLR2/CD14 expression in the host cells enhanced the internalization of TLR2 ligand molecules...
May 10, 2018: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29743615/human-intestinal-pro-inflammatory-cd11c-high-ccr2-cx3cr1-macrophages-but-not-their-tolerogenic-cd11c-ccr2-cx3cr1-counterparts-are-expanded-in-inflammatory-bowel-disease
#19
D Bernardo, A C Marin, S Fernández-Tomé, A Montalban-Arques, A Carrasco, E Tristán, L Ortega-Moreno, I Mora-Gutiérrez, A Díaz-Guerra, R Caminero-Fernández, P Miranda, F Casals, M Caldas, M Jiménez, S Casabona, F De la Morena, M Esteve, C Santander, M Chaparro, J P Gisbert
Although macrophages (Mϕ) maintain intestinal immune homoeostasis, there is not much available information about their subset composition, phenotype and function in the human setting. Human intestinal Mϕ (CD45+ HLA-DR+ CD14+ CD64+ ) can be divided into subsets based on the expression of CD11c, CCR2 and CX3CR1. Monocyte-like cells can be identified as CD11chigh CCR2+ CX3CR1+ cells, a phenotype also shared by circulating CD14+ monocytes. On the contrary, their Mϕ-like tissue-resident counterparts display a CD11c- CCR2- CX3CR1- phenotype...
May 9, 2018: Mucosal Immunology
https://www.readbyqxmd.com/read/29742730/il-35-producing-b-cells-in-gastric-cancer-patients
#20
Ke Wang, Jianming Liu, Jiansheng Li
A significant characteristic of advanced gastric cancer (GC) is immune suppression, which can promote the progression of GC. Interleukin 35 (IL-35) is an immune-suppressing cytokine, and it is generally recognized that this cytokine is secreted by regulatory T (Treg) cells. Recently, studies have found that IL-35 can also be produced by B cells in mice. However, scientific studies reporting that IL-35 is secreted by B cells in humans, specifically in cancer patients, are very rare.Blood samples were collected from 30 healthy controls (HCs) and 50 untreated GC patients, and IL-35-producing B cells in the peripheral blood were investigated...
May 2018: Medicine (Baltimore)
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