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https://www.readbyqxmd.com/read/28333093/the-effect-of-regular-intake-of-dry-cured-ham-rich-in-bioactive-peptides-on-inflammation-platelet-and-monocyte-activation-markers-in-humans
#1
Sara María Martínez-Sánchez, Alfredo Minguela, David Prieto-Merino, María Pilar Zafrilla-Rentero, José Abellán-Alemán, Silvia Montoro-García
Background and aims: Dietary studies have shown that active biopeptides provide protective health benefits, although the mediating pathways are somewhat uncertain. To throw light on this situation, we studied the effects of consuming Spanish dry-cured ham on platelet function, monocyte activation markers and the inflammatory status of healthy humans with pre-hypertension. Methods: Thirty-eight healthy volunteers with systolic blood pressure of >125 mmHg were enrolled in a two-arm crossover randomized controlled trial...
March 23, 2017: Nutrients
https://www.readbyqxmd.com/read/28330867/influenza-vaccines-differentially-regulate-the-interferon-response-in-human-dendritic-cell-subsets
#2
Shruti Athale, Romain Banchereau, LuAnn Thompson-Snipes, Yuanyuan Wang, Karolina Palucka, Virginia Pascual, Jacques Banchereau
Human dendritic cells (DCs) play a fundamental role in the initiation of long-term adaptive immunity during vaccination against influenza. Understanding the early response of human DCs to vaccine exposure is thus essential to determine the nature and magnitude of maturation signals that have been shown to strongly correlate with vaccine effectiveness. In 2009, the H1N1 influenza epidemics fostered the commercialization of the nonadjuvanted monovalent H1N1 California vaccine (MIV-09) to complement the existing nonadjuvanted trivalent Fluzone 2009-2010 vaccine (TIV-09)...
March 22, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28329691/myocardial-infarction-primes-autoreactive-t-cells-through-activation-of-dendritic-cells
#3
Katrien Van der Borght, Charlotte L Scott, Veronika Nindl, Ann Bouché, Liesbet Martens, Dorine Sichien, Justine Van Moorleghem, Manon Vanheerswynghels, Sofie De Prijck, Yvan Saeys, Burkhard Ludewig, Thierry Gillebert, Martin Guilliams, Peter Carmeliet, Bart N Lambrecht
Peripheral tolerance is crucial for avoiding activation of self-reactive T cells to tissue-restricted antigens. Sterile tissue injury can break peripheral tolerance, but it is unclear how autoreactive T cells get activated in response to self. An example of a sterile injury is myocardial infarction (MI). We hypothesized that tissue necrosis is an activator of dendritic cells (DCs), which control tolerance to self-antigens. DC subsets of a murine healthy heart consisted of IRF8-dependent conventional (c)DC1, IRF4-dependent cDC2, and monocyte-derived DCs...
March 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/28329022/annexin-a1-in-blood-mononuclear-cells-from-patients-with-coronary-artery-disease-its-association-with-inflammatory-status-and-glucocorticoid-sensitivity
#4
Ida Bergström, Anna K Lundberg, Simon Jönsson, Eva Särndahl, Jan Ernerudh, Lena Jonasson
Annexin A1 (AnxA1) is a key player in resolution of inflammation and a mediator of glucocorticoid actions. In atherosclerotic tissue, increased expression of AnxA1 has been associated with protective plaque-stabilizing effects. Here, we investigated the expression of AnxA1 in peripheral blood mononuclear cells (PBMCs) from patients with coronary artery disease (CAD). Blood was collected from 57 patients with stable CAD (SCAD) and 41 healthy controls. We also included a minor group (n = 10) with acute coronary syndrome (ACS)...
2017: PloS One
https://www.readbyqxmd.com/read/28323919/steroids-regulate-cxcl4-in-the-human-endometrium-during-menstruation-to-enable-efficient-endometrial-repair
#5
J A Maybin, U Thiruchelvam, M Madhra, Ptk Saunders, Hod Critchley
Context: Repair of the endometrial surface at menstruation must be efficient to minimize blood loss and optimize reproductive function. The mechanism and regulation of endometrial repair remain undefined. Objective: To determine the presence/regulation of CXCL4 in the human endometrium, as a putative repair factor at menses. Patients/Setting: Endometrium was collected throughout the menstrual cycle from healthy women attending the gynecology department...
February 27, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323268/ontogeny-and-homeostasis-of-cns-myeloid-cells
#6
REVIEW
Marco Prinz, Daniel Erny, Nora Hagemeyer
Myeloid cells in the central nervous system (CNS) represent a heterogeneous class of innate immune cells that contribute to the maintenance of tissue homeostasis differentially during development and adulthood. The subsets of CNS myeloid cells identified so far, including parenchymal microglia and non-parenchymal meningeal, perivascular and choroid-plexus macrophages, as well as disease-associated monocytes, have classically been distinguished on the basis of their surface epitope expression, localization and morphology...
March 22, 2017: Nature Immunology
https://www.readbyqxmd.com/read/28319461/monocytes-macrophages-mobilization-orchestrate-neovascularization-after-localized-colorectal-irradiation
#7
Céline Loinard, José Vilar, Fabien Milliat, Bernard Lévy, Marc Benderitter
In patients undergoing radiotherapy for cancer, radiation dose to healthy tissue can occur, causing microvascular damage. Monocytes that have been shown to promote tissue revascularization comprise the subsets: CD11b(+)Ly6G(-)7/4(hi)/monocytes(hi) and CD11b(+)Ly6G(-)7/4(lo)/monocytes(lo). We hypothesized that monocytes were implicated in postirradiation blood vessel formation. C57Bl6 mice underwent localized colorectal irradiation and were sacrificed at different times after exposure. Bone marrow, spleen, blood and colon were collected...
March 20, 2017: Radiation Research
https://www.readbyqxmd.com/read/28317925/liver-macrophages-in-tissue-homeostasis-and-disease
#8
REVIEW
Oliver Krenkel, Frank Tacke
Macrophages represent a key cellular component of the liver, and are essential for maintaining tissue homeostasis and ensuring rapid responses to hepatic injury. Our understanding of liver macrophages has been revolutionized by the delineation of heterogeneous subsets of these cells. Kupffer cells are a self-sustaining, liver-resident population of macrophages and can be distinguished from the monocyte-derived macrophages that rapidly accumulate in the injured liver. Specific environmental signals further determine the polarization and function of hepatic macrophages...
March 20, 2017: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/28316599/interleukin-4-inhibits-regulatory-t-cell-differentiation-through-regulating-cd103-dendritic-cells
#9
Lei Tu, Jie Chen, Hongwei Zhang, Lihua Duan
CD103+ dendritic cells (DCs) have been shown to play a crucial role in the pathogenesis of inflammatory bowel diseases (IBDs) through educating regulatory T (Treg) cells differentiation. However, the mechanism of CD103+ DCs subsets differentiation remains elusive. Interleukin (IL)-4 is a pleiotropic cytokine that is upregulated in certain types of inflammation, including IBDs and especially ulcerative colitis. However, the precise role of IL-4 in the differentiation of CD103+ DCs subpopulation remains unknown...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28304152/reprogramming-of-histone-methylation-controls-the-differentiation-of-monocytes-into-macrophages
#10
Qi-Fan Zheng, Hui-Min Wang, Zhan-Feng Wang, Jin-Yang Liu, Qi Zhang, Li Zhang, Yuan-Hua Lu, Han You, Guang-Hui Jin
Subset heterogeneity of the mononuclear phagocyte system (MPS) is controlled by defined transcriptional networks and programs; however, the dynamic establishment of programs that control broad, orchestrated expression of transcription factors (TFs) during the progression of monocyte-into-phagocyte (MP) differentiation remains largely unexplored. By using chromatin immunoprecipitation assays, we show the extensive trimethylation of histone H3 lysine 4 (H3K4me3) as well as histone H3 lysine 27 (H3K27me3) occupancy with broad footprints at the promoters of MP differentiation-related TFs, such as HOXA and FOXO genes, KLF4, IRF8 and others...
March 17, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28303902/ms4a4a-a-novel-cell-surface-marker-for-m2-macrophages-and-plasma-cells
#11
Ratna Sanyal, Maria J Polyak, Jonathan Zuccolo, Mandip Puri, Lili Deng, Luc Roberts, Ania Zuba, Jan Storek, Joanne M Luider, Ellen M Sundberg, Adnan Mansoor, Eva Baigorri, Michael P Chu, Andrew R Belch, Linda M Pilarski, Julie P Deans
MS4A4A is a member of the membrane-spanning, 4 domain family, subfamily A (MS4A) that includes CD20 (MS4A1), FcRβ (MS4A2) and Htm4 (MS4A3). Like the first three members of this family, transcription of MS4A4A appears to be limited to hematopoietic cells. To evaluate expression of the MS4A4A protein in hematopoietic cell lineages and subsets we generated monoclonal antibodies against extracellular epitopes for use in flow cytometry. In human peripheral blood we found that MS4A4A is expressed at the plasma membrane in monocytes but not in granulocytes or lymphocytes...
March 17, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28293095/different-phenotypes-of-monocytes-in-patients-with-new-onset-mild-acute-pancreatitis
#12
Man-Li Zhang, Yan-Fang Jiang, Xin-Rui Wang, Li-Li Ding, Hong-Juan Wang, Qing-Qing Meng, Pu-Jun Gao
AIM: To evaluate the numbers of different subsets of monocytes and their associations with the values of clinical measures in mild acute pancreatitis (MAP) patients. METHODS: The study included one group of 13 healthy controls and another group of 24 patients with new-onset MAP. The numbers of different subsets of monocytes were examined in these two groups of subjects by flow cytometry. The concentrations of plasma interleukin (IL)-10 and IL-12 were determined by cytometric bead array...
February 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28292872/targeting-different-monocyte-macrophage-subsets-has-no-impact-on-outcome-in-experimental-stroke
#13
Antje Schmidt, Jan-Kolja Strecker, Stephanie Hucke, Nils-Martin Bruckmann, Martin Herold, Matthias Mack, Kai Diederich, Wolf-Rüdiger Schäbitz, Heinz Wiendl, Luisa Klotz, Jens Minnerup
BACKGROUND AND PURPOSE: Peripheral immune cell infiltration contributes to neural injury after ischemic stroke. However, in contrast to lymphocytes and neutrophils, the role of different monocyte/macrophage subsets remains to be clarified. Therefore, we evaluated the effects of selective and unselective monocyte/macrophage depletion and proinflammatory (M1-) and anti-inflammatory (M2-) macrophage transfer on the outcome after experimental cerebral ischemia. METHODS: To assess short-term effects of monocytes/macrophages in acute ischemic stroke, mice underwent transient middle cerebral artery occlusion and received either clodronate liposomes for unselective macrophage depletion, MC-21-antibody for selective depletion of proinflammatory Ly-6C(high) monocytes, or proinflammatory (M1-) or anti-inflammatory (M2-) macrophage transfer...
March 14, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28284714/strain-specificities-in-cellular-and-molecular-immunopathogenic-mechanisms-underlying-development-of-experimental-autoimmune-encephalomyelitis-in-aged-rats
#14
Mirjana Nacka-Aleksić, Zorica Stojić-Vukanić, Ivan Pilipović, Ivana Vujnović, Biljana Bufan, Mirjana Dimitrijević, Gordana Leposavić
To understand strain-specificities of immune system in aged rats and their immunopathological implications, CD4+ T lymphocyte-mediated neuroinflammation in experimental autoimmune encephalomyelitis (EAE) was studied in two strains. Upon immunization for EAE, 22-24-month-old Albino Oxford (AO) rats developed milder neurological deficit of prolonged duration compared with their Dark Agouti (DA) counterparts. Consistently, they exhibited: (i) diminished neuroantigen-specific CD4+ T lymphocyte generation in draining lymph nodes (reflecting lower density of high-affinity IL-2 receptor complex on their surface and higher CD4+FoxP3+CD25+ regulatory cell frequency); (ii) less favorable spinal cord expression of CXCL12 and CCL2, and consequently diminished infiltration of neuroantigen-specific CD4+ T lymphocytes, including highly pathogenic IL-17+IFN-γ+ ones, and inflammatory monocytes into the spinal cord and (iii) subsequently impaired CD4+ T lymphocyte reactivation/survival and differentiation into highly pathogenic IL-17+ cells (reflecting downregulated expression of IL-1β, IL-6 and IL-23/p19)...
March 8, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/28284486/bovine-peripheral-blood-wc1-and-wc1-neg-%C3%AE-%C3%AE-t-lymphocytes-modulate-monocyte-derived-macrophage-effector-functions-during-in-vitro-mycobacterium-avium-subspecies-paratuberculosis-infection
#15
Monica M Baquero, Brandon L Plattner
The importance of bovine γδ T lymphocytes during anti-mycobacterial immunity is recognized; however, the role of major subsets of γδ T lymphocytes (WC1(+) and WC1(neg)) in this process remains unclear. We investigated how WC1(+) and WC1(neg) γδ T lymphocyte subsets of calves modulate monocyte-derived macrophage (MDM) functions during Map infection in vitro. To achieve this, Map-infected or uninfected MDMs from young calves were co-cultured with autologous WC1(+) or WC1(neg) γδ T lymphocytes. Our data indicate that WC1(+) and WC1(neg) γδ T lymphocytes of young calves modulate effector functions of MDMs with respect to Map killing, CD11b and MHC-II expression...
January 16, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28283748/macrophages-in-gastrointestinal-homeostasis-and-inflammation
#16
REVIEW
John R Grainger, Joanne E Konkel, Tamsin Zangerle-Murray, Tovah N Shaw
Monocyte-derived mononuclear phagocytes, particularly macrophages, are crucial to maintain gastrointestinal homeostasis in the steady state but are also important for protection against certain pathogens. However, when uncontrolled, they can promote immunopathology. Broadly two subsets of macrophages can be considered to perform the vast array of functions to complete these complex tasks: resident macrophages that dominate in the healthy gut and inflammation-elicited (inflammatory) macrophages that derive from circulating monocytes infiltrating inflamed tissue...
March 10, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28283696/myeloid-cells-in-circulation-and-tumor-microenvironment-of-breast-cancer-patients
#17
Salman M Toor, Azharuddin Sajid Syed Khaja, Haytham El Salhat, Issam Faour, Jihad Kanbar, Asif A Quadri, Mohamed Albashir, Eyad Elkord
Pathological conditions including cancers lead to accumulation of a morphological mixture of highly immunosuppressive cells termed as myeloid-derived suppressor cells (MDSC). The lack of conclusive markers to identify human MDSC, due to their heterogeneous nature and close phenotypical and functional proximity with other cell subsets, made it challenging to identify these cells. Nevertheless, expansion of MDSC has been reported in periphery and tumor microenvironment of various cancers. The majority of studies on breast cancers were performed on murine models and hence limited literature is available on the relation of MDSC accumulation with clinical settings in breast cancer patients...
March 10, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28283241/the-shift-of-macrophages-toward-m1-phenotype-promotes-aortic-valvular-calcification
#18
Geng Li, Weihua Qiao, Wenjing Zhang, Fei Li, Jiawei Shi, Nianguo Dong
OBJECTIVE: The purpose of the present study was to comprehensively compare the phenotype profile of infiltrated macrophages in human noncalcified and calcific aortic valves, and to determine whether the shift of macrophage polarization modulates valvular calcification in vitro. METHODS: Cell surface markers of macrophages and inflammatory cytokines expression in 90 cases of human noncalcified and calcific aortic valve leaflets were analyzed. The normal aortic valve interstitial cells were isolated and cultured in vitro...
February 9, 2017: Journal of Thoracic and Cardiovascular Surgery
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
#19
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/28279502/circulating-microparticle-subpopulations-in-systemic-lupus-erythematosus-are-affected-by-disease-activity
#20
Patricia López, Javier Rodríguez-Carrio, Aleida Martínez-Zapico, Luis Caminal-Montero, Ana Suárez
BACKGROUND: Immune cells under chronic inflammation shed microparticles (MPs) that could fuel the inflammatory responses and atherosclerosis typically presented in systemic lupus erythematosus (SLE). This study analyzes total and subset-specific MPs from SLE patients and their possible influence on clinical features, leukocyte activation and serum cytokines. METHODS: Total MPs and those derived from platelets, endothelial cells, monocytes, granulocytes and T-cells were quantified in plasma of 106 SLE patients and 33 healthy controls by flow cytometry...
March 1, 2017: International Journal of Cardiology
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