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Intermediate monocyte

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https://www.readbyqxmd.com/read/28536942/lrrc25-plays-a-key-role-in-all-trans-retinoic-acid-induced-granulocytic-differentiation-as-a-novel-potential-leukocyte-differentiation-antigen
#1
Weili Liu, Ting Li, Pingzhang Wang, Wanchang Liu, Fujun Liu, Xiaoning Mo, Zhengyang Liu, Quansheng Song, Ping Lv, Guorui Ruan, Wenling Han
Leukocyte differentiation antigens (LDAs) play important roles in the immune system, by serving as surface markers and participating in multiple biological activities, such as recognizing pathogens, mediating membrane signals, interacting with other cells or systems, and regulating cell differentiation and activation. Data mining is a powerful tool used to identify novel LDAs from whole genome. LRRC25 (leucine rich repeat-containing 25) was predicted to have a role in the function of myeloid cells by a large-scale "omics" data analysis...
May 23, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28514690/genomic-characterization-of-murine-monocytes-reveals-c-ebp%C3%AE-transcription-factor-dependence-of-ly6c-cells
#2
Alexander Mildner, Jörg Schönheit, Amir Giladi, Eyal David, David Lara-Astiaso, Erika Lorenzo-Vivas, Franziska Paul, Louise Chappell-Maor, Josef Priller, Achim Leutz, Ido Amit, Steffen Jung
Monocytes are circulating, short-lived mononuclear phagocytes, which in mice and man comprise two main subpopulations. Murine Ly6C(+) monocytes display developmental plasticity and are recruited to complement tissue-resident macrophages and dendritic cells on demand. Murine vascular Ly6C(-) monocytes patrol the endothelium, act as scavengers, and support vessel wall repair. Here we characterized population and single cell transcriptomes, as well as enhancer and promoter landscapes of the murine monocyte compartment...
May 16, 2017: Immunity
https://www.readbyqxmd.com/read/28504245/macrophage-derived-il-1%C3%AE-promotes-sterile-inflammation-in-a-mouse-model-of-acetaminophen-hepatotoxicity
#3
Chao Zhang, Jin Feng, Jun Du, Zhiyong Zhuo, Shuo Yang, Weihong Zhang, Weihong Wang, Shengyuan Zhang, Yoichiro Iwakura, Guangxun Meng, Yang-Xin Fu, Baidong Hou, Hong Tang
The metabolic intermediate of acetaminophen (APAP) can cause severe hepatocyte necrosis, which triggers aberrant immune activation of liver non-parenchymal cells (NPC). Overzealous hepatic inflammation determines the morbidity and mortality of APAP-induced liver injury (AILI). Interleukin-1 receptor (IL-1R) signaling has been shown to play a critical role in various inflammatory conditions, but its precise role and underlying mechanism in AILI remain debatable. Herein, we show that NLRP3 inflammasome activation of IL-1β is dispensable to AILI, whereas IL-1α, the other ligand of IL-1R1, accounts for hepatic injury by a lethal dose of APAP...
May 15, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28502933/sustained-tubulointerstitial-inflammation-in-kidney-with-severe-leptospirosis
#4
Keiko Tanaka, Katsuyuki Tanabe, Naoko Nishii, Keiichi Takiue, Hitoshi Sugiyama, Jun Wada
Leptospirosis is frequently associated with acute kidney injury. Some survivors are known to progress to chronic kidney disease due to sustained tubulointerstitial inflammation. We present a case of severe leptospirosis with acute renal failure. Although antibiotic therapy resolved the infection, moderate renal dysfunction remained. A renal biopsy demonstrated marked inflammatory infiltration in the tubules and interstitium. Many of the inflammatory cells were CD68-positive monocytes/macrophages, predominantly M1 phenotype...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28493507/pkc-erk-p38-map-kinases-and-nf-%C3%AE%C2%BAb-targeted-signalling-play-a-role-in-the-expression-and-release-of-il-1%C3%AE-and-cxcl8-in-porphyromonas-gingivalis-infected-thp1-cells
#5
Kartheyaene Jayaprakash, Isak Demirel, Sezin Gunaltay, Hazem Khalaf, Torbjörn Bengtsson
Porphyromonas gingivalis is a keystone pathogen in periodontitis and is gaining importance in cardiovascular pathogenesis. Protease-activated receptors (PARs), toll-like receptors (TLRs) and nucleotide-binding oligomerization domain (NOD) on monocytes recognize the structural components on P. gingivalis, inducing inflammatory intermediates. Here, we elucidate the modulation of PARs, TLRs, NODs, and the role of MAPK and NF-κB in IL-1β and CXCL8 release. THP1 cells were stimulated with P. gingivalis wild-type W50 and its isogenic gingipain mutants: Rgp mutant E8 and Kgp mutant K1A...
May 11, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28492698/il-33-stimulates-the-release-of-procoagulant-microvesicles-from-human-monocytes-and-differentially-increases-tissue-factor-in-human-monocyte-subsets
#6
Stefan Stojkovic, Åsa Thulin, Lena Hell, Barbara Thaler, Sabine Rauscher, Johanna Baumgartner, Marion Gröger, Cihan Ay, Svitlana Demyanets, Christoph Neumayer, Ihor Huk, Andreas Spittler, Kurt Huber, Johann Wojta, Agneta Siegbahn, Mikael Åberg
Monocytes and monocyte-derived microvesicles (MVs) are the main source of circulating tissue factor (TF). Increased monocyte TF expression and increased circulating levels of procoagulant MVs contribute to the formation of a prothrombotic state in patients with cardiovascular disease. Interleukin (IL)-33 is a pro-inflammatory cytokine involved in atherosclerosis and other inflammatory diseases, but its role in regulating thrombosis is still unclear. The aim of the present study was to investigate the effects of IL-33 on the procoagulant properties of human monocytes and monocyte-derived MVs...
May 11, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28473063/weight-loss-achieved-using-an-energy-restriction-diet-with-normal-or-higher-dietary-protein-decreased-the-number-of-cd14-cd16-proinflammatory-monocytes-and-plasma-lipids-and-lipoproteins-in-middle-aged-overweight-and-obese-adults
#7
Jung Eun Kim, Ge Lin, Jing Zhou, Julie A Mund, Jamie Case, Wayne W Campbell
Monocytes are involved in immune responses, and specific monocyte subpopulations (MS) that express intermediate to high levels of CD16 are associated with obesity and cardiovascular events. Consuming high protein (HP) when dieting improves body composition and cardiometabolic health outcomes, but whether HP affects MS during weight loss remains unknown. We assessed the effect of HP on energy restriction (ER)-induced changes in MS in overweight and obese adults. The relations between MS and plasma lipids and lipoproteins were also examined...
April 2017: Nutrition Research
https://www.readbyqxmd.com/read/28445506/phenotype-function-and-differentiation-potential-of-human-monocyte-subsets
#8
Lisa B Boyette, Camila Macedo, Kevin Hadi, Beth D Elinoff, John T Walters, Bala Ramaswami, Geetha Chalasani, Juan M Taboas, Fadi G Lakkis, Diana M Metes
Human monocytes have been grouped into classical (CD14++CD16-), non-classical (CD14dimCD16++), and intermediate (CD14++CD16+) subsets. Documentation of normal function and variation in this complement of subtypes, particularly their differentiation potential to dendritic cells (DC) or macrophages, remains incomplete. We therefore phenotyped monocytes from peripheral blood of healthy subjects and performed functional studies on high-speed sorted subsets. Subset frequencies were found to be tightly controlled over time and across individuals...
2017: PloS One
https://www.readbyqxmd.com/read/28422989/the-lack-of-btk-does-not-impair-monocytes-and-polymorphonuclear-cells-functions-in-x-linked-agammaglobulinemia-under-treatment-with-intravenous-immunoglobulin-replacement
#9
Filomena Monica Cavaliere, Alessandro Prezzo, Caterina Bilotta, Metello Iacobini, Isabella Quinti
The lack of BTK in X-linked agammaglobulinemia (XLA) patients does not affect monocytes and polymorphonuclear cells (PMN) phenotype and functions. In this study, we show that XLA patients had an increased frequency of the intermediate monocytes subset and that BTK-deficient monocytes and PMN had a normal expression of receptors involved in the activation and cellular responses. We demonstrate that BTK is not required for migration, phagocytosis and the production of reactive oxygen species (ROS) following engagement of FC gamma receptors (FcγR)...
2017: PloS One
https://www.readbyqxmd.com/read/28420693/modulation-of-innate-immunity-of-patients-with-alzheimer-s-disease-by-omega-3-fatty-acids
#10
REVIEW
Milan Fiala, Gijs Kooij, Karen Wagner, Bruce Hammock, Matteo Pellegrini
The innate immune system of patients with Alzheimer's disease and mild cognitive impairment (MCI) is deregulated with highly increased or decreased transcription of inflammatory genes and consistently depressed phagocytosis of amyloid-β1-42 (Aβ) by monocytes and macrophages. Current immune therapies target single mechanisms in the adaptive immune system but not innate immunity. Here, we summarize recent advances in therapy by ω-3, ω-6, and epoxy fatty acids; specialized proresolving mediators; and vitamin D3 that have proven immune effects and emerging cognitive effects in patients with MCI...
April 18, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28348563/perturbations-of-monocyte-subsets-and-their-association-with-t-helper-cell-differentiation-in-acute-and-chronic-hiv-1-infected-patients
#11
Peng Chen, Bin Su, Tong Zhang, Xiaojing Zhu, Wei Xia, Yan Fu, Guoxian Zhao, Huan Xia, Lili Dai, Lijun Sun, Lifeng Liu, Hao Wu
Monocytes have been recently subdivided into three subsets: classical (CD14++CD16-), intermediate (CD14++CD16+), and non-classical (CD14+CD16++) subsets, but phenotypic and functional abnormalities of the three monocyte subsets in HIV-1 infection have not been fully characterized, especially in acute HIV-1 infection (AHI). In the study, we explored the dynamic changes of monocyte subsets and their surface markers, and the association between monocyte subsets and the IFN-γ, interleukin (IL)-4, IL-17, and TNF-α producing CD4+ T cells in acute and chronic HIV-1-infected patients...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28323396/toll-like-receptor-2-bright-cells-identify-circulating-monocytes-in-human-and-non-human-primates
#12
Erin N Shirk, Brian G Kral, Lucio Gama
Polychromatic flow cytometry is a useful tool for monitoring circulating whole blood monocytes, although gating strategies often vary depending on the study. Increased analyses of the myeloid system have revealed monocytes to be more plastic than previously understood and uncovered changes among surface markers previously considered to be stable. The myeloid system has also been found to have disparate surface markers between mouse, human, and non-human primate studies, which further complicates examination between species...
April 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/28293233/the-soil-bacterium-methylococcus-capsulatus-bath-interacts-with-human-dendritic-cells-to-modulate-immune-function
#13
Stine Indrelid, Charlotte Kleiveland, René Holst, Morten Jacobsen, Tor Lea
The prevalence of inflammatory bowel disease (IBD) has increased in Western countries during the course of the twentieth century, and is evolving to be a global disease. Recently we showed that a bacterial meal of a non-commensal, non-pathogenic methanotrophic soil bacterium, Methylococcus capsulatus Bath prevents experimentally induced colitis in a murine model of IBD. The mechanism behind the effect has this far not been identified. Here, for the first time we show that M. capsulatus, a soil bacterium adheres specifically to human dendritic cells, influencing DC maturation, cytokine production, and subsequent T cell activation, proliferation and differentiation...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28281897/patients-with-acute-myeloid-leukemia-can-be-subclassified-based-on-the-constitutive-cytokine-release-of-the-leukemic-cells-the-possible-clinical-relevance-and-the-importance-of-cellular-iron-metabolism
#14
Annette K Brenner, Tor Henrik Anderson Tvedt, Ina Nepstad, Kristin P Rye, Karen M Hagen, Håkon Reikvam, Øystein Bruserud
OBJECTIVE: Acute myeloid leukaemia (AML) is a heterogeneous malignancy; we studied how the constitutive cytokine release by the AML cells varies among patients. METHODS: We investigated the constitutive release of 28 mediators during in vitro culture for 79 consecutive patients. RESULTS: Constitutive cytokine release profiles differed among patients, and hierarchical clustering identified three subsets with high, intermediate and low release, respectively...
April 2017: Expert Opinion on Therapeutic Targets
https://www.readbyqxmd.com/read/28255273/increase-in-peripheral-blood-intermediate-monocytes-is-associated-with-the-development-of-recent-onset-type-1-diabetes-mellitus-in-children
#15
Xiaoya Ren, Wenjun Mou, Chang Su, Xi Chen, Hui Zhang, Bingyan Cao, Xiaoqiao Li, Di Wu, Xin Ni, Jingang Gui, Chunxiu Gong
Monocytes play important roles in antigen presentation and cytokine production to achieve a proper immune response, and are therefore largely implicated in the development and progression of autoimmune diseases. The aim of this study was to analyze the change in the intermediate (CD14+CD16+) monocyte subset in children with recent-onset type 1 diabetes mellitus (T1DM) and its possible association with clinical parameters reflecting islet β-cell dysfunction. Compared with age- and sex-matched healthy controls, intermediate monocytes were expanded in children with T1DM, which was positively associated with hemoglobin A1C and negatively associated with serum insulin and C-peptide...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28250118/imaging-hiv-1-genomic-dna-from-entry-through-productive-infection
#16
Ryan D Stultz, Jennifer J Cenker, David McDonald
In order to track the fate of HIV-1 particles from early entry events through productive infection, we developed a method to visualize HIV-1 DNA reverse transcription complexes by the incorporation and fluorescent labeling of the thymidine analog 5-ethynyl-2'-deoxyuridine (EdU) into nascent viral DNA during cellular entry. Monocyte-derived macrophages were chosen as natural targets of HIV-1, as they do not divide and therefore do not incorporate EdU into chromosomal DNA, which would obscure the detection of intranuclear HIV-1 genomes...
May 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28239800/intermediate-cd14-cd16-monocyte-predicts-severe-coronary-stenosis-and-extensive-plaque-involvement-in-asymptomatic-individuals
#17
Shyh-Chyi Lo, Wen-Jeng Lee, Ching-Yi Chen, Bai-Chin Lee
Circulating leukocyte subtypes and monocyte subsets are independent predictors of cardiovascular events. We hypothesized that an increased leukocyte subtype would predict severe coronary stenosis and extensive plaque involvement. We retrospectively analyzed clinical, laboratory, and coronary CT data in a total of 588 asymptomatic adults (69% men; mean age, 57 ± 9 years) undergoing a general health check-up. Intermediate CD14(++)CD16(+) monocyte count had the strongest association with mixed and calcified plaque scores, whereas the numbers of neutrophils and classical CD14(++)CD16(-) monocytes were significantly associated with non-calcified plaque score...
February 26, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28229168/cd14-cd16-nonclassical-monocytes-are-associated-with-endothelial-dysfunction-in-patients-with-coronary-artery-disease
#18
Karol Urbanski, Dominik Ludew, Grzegorz Filip, Magdalena Filip, Agnieszka Sagan, Piotr Szczepaniak, Grzegorz Grudzien, Jerzy Sadowski, Barbara Jasiewicz-Honkisz, Tomasz Sliwa, Boguslaw Kapelak, Eilidh McGinnigle, Tomasz Mikolajczyk, Tomasz J Guzik
Endothelial dysfunction and inflammation are key mechanisms of vascular disease. We hypothesised that heterogeneity of monocyte subpopulations may be related to the development of vascular dysfunction in coronary artery disease (CAD). Therefore, we examined the relationships between monocyte subsets (CD14(++)CD16(-) "classical - Mon1", CD14(++)CD16(+) "intermediate - Mon2" and CD14(+)CD16(++) "nonclassical - Mon3"), endothelial function and risk factor profiles in 130 patients with CAD undergoing coronary artery bypass grafting...
February 23, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28228523/vpx-overcomes-a-samhd1-independent-block-to-hiv-reverse-transcription-that-is-specific-to-resting-cd4-t-cells
#19
Hanna-Mari Baldauf, Lena Stegmann, Sarah-Marie Schwarz, Ina Ambiel, Maud Trotard, Margarethe Martin, Manja Burggraf, Gina M Lenzi, Helena Lejk, Xiaoyu Pan, Oliver I Fregoso, Efrem S Lim, Libin Abraham, Laura A Nguyen, Frank Rutsch, Renate König, Baek Kim, Michael Emerman, Oliver T Fackler, Oliver T Keppler
Early after entry into monocytes, macrophages, dendritic cells, and resting CD4 T cells, HIV encounters a block, limiting reverse transcription (RT) of the incoming viral RNA genome. In this context, dNTP triphosphohydrolase SAM domain and HD domain-containing protein 1 (SAMHD1) has been identified as a restriction factor, lowering the concentration of dNTP substrates to limit RT. The accessory lentiviral protein X (Vpx) proteins from the major simian immunodeficiency virus of rhesus macaque, sooty mangabey, and HIV-2 (SIVsmm/SIVmac/HIV-2) lineage packaged into virions target SAMHD1 for proteasomal degradation, increase intracellular dNTP pools, and facilitate HIV cDNA synthesis...
March 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28223716/preoperative-red-cell-distribution-width-and-neutrophil-to-lymphocyte-ratio-predict-survival-in-patients-with-epithelial-ovarian-cancer
#20
Zheng Li, Na Hong, Melissa Robertson, Chen Wang, Guoqian Jiang
Several parameters of preoperative complete blood count (CBC) and inflammation-associated blood cell markers derived from them have been reported to correlate with prognosis in patients with epithelial ovarian cancer (EOC), but their prognostic importance and optimal cutoffs are still needed be elucidated. Clinic/pathological parameters, 5-year follow-up data and preoperative CBC parameters were obtained retrospectively in 654 EOC patients underwent primary surgery at Mayo Clinic. Cutoffs for neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), and monocyte-to-lymphocyte ratio (MLR) were optimized by receiver operating characteristic (ROC) curve...
February 22, 2017: Scientific Reports
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