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https://www.readbyqxmd.com/read/28229168/cd14-cd16-nonclassical-monocytes-are-associated-with-endothelial-dysfunction-in-patients-with-coronary-artery-disease
#1
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/28226228/antigen-presenting-cells-in-the-skin
#2
Sakeen W Kashem, Muzlifah Haniffa, Daniel H Kaplan
Professional antigen-presenting cells (APCs) in the skin include dendritic cells, monocytes, and macrophages. They are highly dynamic, with the capacity to enter skin from the peripheral circulation, patrol within tissue, and migrate through lymphatics to draining lymph nodes. Skin APCs are endowed with antigen sensing, processing, and presenting machinery and play key roles in initiating, modulating, and resolving cutaneous inflammation. Skin APCs are a highly heterogeneous population with functionally specialized subsets that are developmentally imprinted and modulated by local tissue microenvironmental and inflammatory cues...
February 6, 2017: Annual Review of Immunology
https://www.readbyqxmd.com/read/28225889/roles-of-monocyte-chemotactic-protein-1-and-nuclear-factor-%C3%AE%C2%BAb-in-immune-response-to-spinal-tuberculosis-in-a-new-zealand-white-rabbit-model
#3
X H Guo, Z Bai, B Qiang, F H Bu, N Zhao
This study aimed to explore the roles of monocyte chemotactic protein 1 (MCP-1) and nuclear factor kappa B (NF-κB) in immune response to spinal tuberculosis in a New Zealand white rabbit model. Forty-eight New Zealand white rabbits were collected and divided into four groups: experimental group (n=30, spinal tuberculosis model was established), the sham group (n=15, sham operation was performed) and the blank group (n=3). The qRT-PCR assay and western blotting were applied to detect the mRNA and protein expressions of MCP-1 and NF-κB in peripheral blood...
February 20, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28222802/counts-of-bovine-monocyte-subsets-prior-to-calving-are-predictive-for-postpartum-occurrence-of-mastitis-and-metritis
#4
Brianna Pomeroy, Anja Sipka, Jamal Hussen, Melanie Eger, Ynte Schukken, Hans-Joachim Schuberth
The heightened susceptibility to infectious diseases in postpartum dairy cows is often attributed to immune dysfunction associated with the transition period. However, the cell populations involved in this immune dysfunction and the dynamics between those populations are not well defined. Monocytes play a crucial role in governing initial immune response in bacterial infections. Bovine monocytes are subdivided in classical (CD14(+)/CD16(-)), intermediate (CD14(+)/CD16(+)) and non-classical monocytes (CD14(-)/CD16(+)) with distinct phenotypic and functional differences...
February 21, 2017: Veterinary Research
https://www.readbyqxmd.com/read/28222329/inflammatory-chemokines-and-their-receptors-in-human-visceral-leishmaniasis-gene-expression-profile-in-peripheral-blood-splenic-cellular-sources-and-their-impact-on-trafficking-of-inflammatory-cells
#5
Neetu Singh, Shyam Sundar
Chemokines play an important role in determining cellular composition at inflammatory sites, and as such, influence disease outcome. In this study, we investigated the expression profile and splenic cellular source of various inflammatory chemokines and their receptors in human visceral leishmaniasis (VL). The expression of chemokines or their receptors was measured at the gene and protein level by employing real time qPCR and a cytometric bead array assay, respectively. In addition, the cellular source of chemokines and their receptors in the spleen was identified employing gene expression analyses in sequentially selected cell subsets...
February 18, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28219444/a-functional-snp-associated-with-atopic-dermatitis-controls-cell-type-specific-methylation-of-the-vstm1-gene-locus
#6
Dilip Kumar, Kia Joo Puan, Anand Kumar Andiappan, Bernett Lee, Geertje H A Westerlaken, Doreen Haase, Rossella Melchiotti, Zhuang Li, Nurhashikin Yusof, Josephine Lum, Geraldine Koh, Shihui Foo, Joe Yeong, Alexessander Couto Alves, Juha Pekkanen, Liang Dan Sun, Astrid Irwanto, Benjamin P Fairfax, Vivek Naranbhai, John E A Common, Mark Tang, Chin Keh Chuang, Marjo-Riitta Jarvelin, Julian C Knight, Xuejun Zhang, Fook Tim Chew, Shyam Prabhakar, Liu Jianjun, De Yun Wang, Francesca Zolezzi, Michael Poidinger, E Birgitte Lane, Linde Meyaard, Olaf Rötzschke
BACKGROUND: Expression quantitative trait loci (eQTL) databases represent a valuable resource to link disease-associated SNPs to specific candidate genes whose gene expression is significantly modulated by the SNP under investigation. We previously identified signal inhibitory receptor on leukocytes-1 (SIRL-1) as a powerful regulator of human innate immune cell function. While it is constitutively high expressed on neutrophils, on monocytes the SIRL-1 surface expression varies strongly between individuals...
February 20, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28215928/human-platelet-lysate-is-a-successful-alternative-serum-supplement-for-propagation-of-monocyte-derived-dendritic-cells
#7
Urban Švajger
BACKGROUND AIMS: Clinical protocols for dendritic cell (DC) generation from monocytes require the use of animal serum-free supplements. Serum-free media can also require up to 1% of serum supplementation. In addition, recommendations based on the 3Rs (Refinement, Reduction, Replacement) principle also recommend the use of non-animal sera in in vitro studies. The aim of this study was to explore the potential use of platelet lysate (PL) for generation of optimally differentiated DCs from monocytes...
February 16, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28213502/monocytes-are-the-predominate-cell-type-associated-with-listeria-monocytogenes-in-the-gut-but-they-do-not-serve-as-an-intracellular-growth-niche
#8
Grant S Jones, Sarah E F D'Orazio
After foodborne transmission of the facultative intracellular bacterial pathogen Listeria monocytogenes, most of the bacterial burden in the gut is extracellular. However, we previously demonstrated that intracellular replication in an as yet unidentified cell type was essential for dissemination and systemic spread of L. monocytogenes In this article, we show that the vast majority of cell-associated L. monocytogenes in the gut were adhered to Ly6C(hi) monocytes, a cell type that inefficiently internalized L...
February 17, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28213094/aspirin-triggered-resolvin-d1-modified-materials-promote-the-accumulation-of-pro-regenerative-immune-cell-subsets-and-enhance-vascular-remodeling
#9
Mary Caitlin P Sok, Maxianne C Tria, Claire E Olingy, Cheryl L San Emeterio, Edward A Botchwey
: Many goals in tissue engineering rely on modulating cellular localization and polarization of cell signaling, including the inhibition of inflammatory infiltrate, facilitation of inflammatory cell egress, and clearance of apoptotic cells. Omega-3 polyunsaturated fatty acid-derived resolvins are gaining increasing recognition for their essential roles in inhibition of neutrophil invasion into inflamed tissue and promotion of macrophage phagocytosis of cellular debris as well as their egress to the lymphatics...
February 14, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28209562/vinexin-%C3%AE-ablation-inhibits-atherosclerosis-in-apolipoprotein-e-deficient-mice-by-inactivating-the-akt-nuclear-factor-%C3%AE%C2%BAb-inflammatory-axis
#10
Hongjing Guan, Wen-Lin Cheng, Junhong Guo, Meng-Lin Chao, Yan Zhang, Jun Gong, Xue-Yong Zhu, Zhi-Gang She, Zan Huang, Hongliang Li
BACKGROUND: Vinexin β is a novel adaptor protein that regulates cellular adhesion, cytoskeletal reorganization, signal transduction, and transcription; however, the exact role that vinexin β plays in atherosclerosis remains unknown. METHODS AND RESULTS: Immunoblot analysis showed that vinexin β expression is upregulated in the atherosclerotic lesions of both patients with coronary heart disease and hyperlipemic apolipoprotein E-deficient mice and is primarily localized in macrophages indicated by immunofluorescence staining...
February 16, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28194024/regnase-1-a-rapid-response-ribonuclease-regulating-inflammation-and-stress-responses
#11
REVIEW
Renfang Mao, Riyun Yang, Xia Chen, Edward W Harhaj, Xiaoying Wang, Yihui Fan
RNA-binding proteins (RBPs) are central players in post-transcriptional regulation and immune homeostasis. The ribonuclease and RBP Regnase-1 exerts critical roles in both immune cells and non-immune cells. Its expression is rapidly induced under diverse conditions including microbial infections, treatment with inflammatory cytokines and chemical or mechanical stimulation. Regnase-1 activation is transient and is subject to negative feedback mechanisms including proteasome-mediated degradation or mucosa-associated lymphoid tissue 1 (MALT1) mediated cleavage...
February 13, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28193827/monocyte-subsets-coregulate-inflammatory-responses-by-integrated-signaling-through-tnf-and-il-6-at-the-endothelial-cell-interface
#12
Myriam Chimen, Clara M Yates, Helen M McGettrick, Lewis S C Ward, Matthew J Harrison, Bonita Apta, Lea H Dib, Beat A Imhof, Paul Harrison, Gerard B Nash, G Ed Rainger
Two major monocyte subsets, CD14(+)CD16(-) (classical) and CD14(+/dim)CD16(+) (nonclassical/intermediate), have been described. Each has different functions ascribed in its interactions with vascular endothelial cells (EC), including migration and promoting inflammation. Although monocyte subpopulations have been studied in isolated systems, their influence on EC and on the course of inflammation has been ignored. In this study, using unstimulated or cytokine-activated EC, we observed significant differences in the recruitment, migration, and reverse migration of human monocyte subsets...
February 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28192720/dendritic-cells-in-cancer-the-role-revisited
#13
REVIEW
Filippo Veglia, Dmitry I Gabrilovich
Dendritic cells (DCs) with their potent antigen presenting ability are long considered as critical factor in antitumor immunity. Despite high potential in promoting antitumor responses, tumor-associated DCs are largely defective in their functional activity and can contribute to immune suppression in cancer. In recent years existence of immune suppressive regulatory DCs in tumor microenvironment was described. Monocytic myeloid derived suppressor cells (M-MDSCs) can contribute to the pool of tumor associated DCs by differentiating to inflammatory DCs (inf-DCs), which appear to have specific phenotype and is critical component of antitumor response...
February 10, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/28184299/the-role-of-cdc1s-in-vivo-cd8-t-cell-priming-through-cross-presentation
#14
REVIEW
Derek Theisen, Kenneth Murphy
The cDC1 subset of classical dendritic cells is specialized for priming CD8 T cell responses through the process of cross-presentation. The molecular mechanisms of cross-presentation remain incompletely understood because of limited biochemical analysis of rare cDC1 cells, difficulty in their genetic manipulation, and reliance on in vitro systems based on monocyte- and bone-marrow-derived dendritic cells. This review will discuss cross-presentation from the perspective of studies with monocyte- or bone-marrow-derived dendritic cells while highlighting the need for future work examining cDC1 cells...
2017: F1000Research
https://www.readbyqxmd.com/read/28183821/exercise-induced-upregulation-of-endothelial-adhesion-molecules-in-human-skeletal-muscle-and-number-of-circulating-cells-with-remodeling-properties
#15
Anna Strömberg, Eric Rullman, Eva Jansson, Thomas Gustafsson
Multipotent cells have received great interest due to their potential capacity to repair and remodel peripheral tissues. We examined the effect of an acute exercise bout on the number of circulating cells with known remodeling properties, and the level of factors in plasma and skeletal muscle tissue with potential to recruit these cells. Twenty healthy male subjects performed a 60 min cycling exercise. Blood samples for flow cytometry were drawn from 10 subjects (Group 1) before and up to 2 h after exercise, and absolute cell counts of the classical (CD14(++)CD16(-)), intermediate (CD14(++)CD16(+)), and nonclassical (CD14(+)CD16(++)) monocyte (MO) subpopulations, and of CD45(dim)CD34(+)VEGFR2(+) endothelial progenitor cells (EPCs) were measured using bead-based determination...
February 9, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28183329/cd14-bright-cd16-intermediate-monocytes-are-induced-by-interleukin-10-and-positively-correlate-with-disease-activity-in-rheumatoid-arthritis
#16
Masako Tsukamoto, Noriyuki Seta, Keiko Yoshimoto, Katsuya Suzuki, Kunihiro Yamaoka, Tsutomu Takeuchi
BACKGROUND: Three different subsets of circulating human monocytes, CD14(bright)CD16- (classical), CD14(bright)CD16+ (intermediate), and CD14(dim)CD16+ (non-classical) have been recently identified. It has been reported that CD14(bright)CD16+ monocytes are increased in rheumatoid arthritis (RA). However, the role of each monocyte subset in the pathogenesis of RA is still unclear. The purpose of this study was to investigate the association of CD14(bright)CD16+ monocytes with RA. METHODS: The study enrolled 35 patients with RA and 14 healthy volunteers...
February 10, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28179539/smoking-reduces-circulating-cd26-hi-cd161-hi-mait-cells-in-healthy-individuals-and-patients-with-multiple-sclerosis
#17
Cecilie Ammitzbøll, Lars Börnsen, Jeppe Romme Christensen, Rikke Ratzer, Birgitte Romme Nielsen, Helle B Søndergaard, Marina R von Essen, Finn Sellebjerg
Upon chronic cigarette smoke exposure, inhaled antigens and irritants cause altered lung immune homeostasis. Circulating immune cells are affected, and smoking is associated with an increased risk of developing various disorders, including multiple sclerosis (MS). This study was conducted to determine the impact of smoking on circulating immune cell subsets. Furthermore, we determined whether any smoking-associated changes were related to MS. With the use of flow cytometry, CFSE assays, and ELISpot assays, we analyzed circulating immune cell phenotypes and quantified antigen-induced proliferation and cytokine secretion in smokers and nonsmokers in a cohort of 100 healthy individuals (HI)...
February 8, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28176950/circulating-monocytes-and-b-lymphocytes-in-neovascular-age-related-macular-degeneration
#18
Sven Magnus Hector, Torben Lykke Sørensen
BACKGROUND: Individuals with neovascular age-related macular degeneration (AMD) have altered number and distribution of retinal macrophages and show changes in circulating antibodies. We wanted to investigate the corresponding precursors, with subpopulations. We therefore measured monocyte and B-lymphocyte populations in individuals with neovascular AMD. DESIGN: This was an observational case-control study. PARTICIPANTS OR SAMPLES: A total of 31 individuals with neovascular AMD and 30 healthy age-matched controls were included...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28169353/human-cd64-targeted-non-viral-sirna-delivery-system-for-blood-monocyte-gene-modulation
#19
Seok-Beom Yong, Hyung Jin Kim, Jang Kyoung Kim, Jee Young Chung, Yong-Hee Kim
A subset of phagocytes including inflammatory monocytes in blood migrate and give rise to macrophages in inflammatory tissues which generated the idea that blood monocytes are the therapeutic targets for drug delivery. Fc gamma receptor I (CD64) is a membrane receptor for the Fc region of immunoglobulin G, primarily expressed on monocyte-lineage, and H22 a monoclonal antibody for human CD64 had shown rapid blood monocyte binding and occupation in clinical studies. Small interfering RNA-mediated gene silencing as a therapeutic has been proposed and is a promising strategy in terms of its "knock-down" ability on the target gene prior to translation...
February 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28162006/age-dependent-cellular-reactions-of-the-human-immune-system-of-humanized-nod-scid-gamma-mice-on-lps-stimulus
#20
Anja Rodewohl, Johanna Scholbach, Anna Leichsenring, Margarethe Köberle, Franziska Lange
Despite sepsis being a life-threatening disease, targeted drugs that improve the therapy of affected patients are still lacking. Infants and adults differ in the maturity level of their immune system and this results in distinct reactions to Gram-negative bacteria. To study reactions of human immune cells in vivo, we used NOD scid gamma mice transplanted with human CD34(+) stem cells to engraft a functional human immune system. Human cells undergo differentiation and maturation in these mice after transplantation and, accordingly, animals were divided into two groups: 8-13 wk and 15-22 wk after transplantation...
January 1, 2017: Innate Immunity
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