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https://www.readbyqxmd.com/read/28409543/ccr-2-neutralization-augments-murine-fresh-bmc-activation-by-staphylococcus-aureus-via-two-distinct-mechanisms-at-the-level-of-ros-production-and-cytokine-response
#1
Ajeya Nandi, Biswadev Bishayi
CCR-2 signaling regulates recruitment of monocytes from the bone marrow into the bloodstream and then to sites of infection. We sought to determine whether CCL-2/CCR-2 signaling is involved in the killing of Staphylococcus aureus by murine bone marrow cells (BMCs). The intermittent link of reactive oxygen species (ROS)-NF-κB/p38-MAPK-mediated CCL-2 production in CCR-2 signaling prompted us to determine whether neutralization of CCR-2 augments the response of murine fresh BMCs (FBMCs) after S. aureus infection...
May 2017: Innate Immunity
https://www.readbyqxmd.com/read/28315675/low-intensity-training-and-the-c5a-complement-antagonist-nox-d21-rescue-the-mdx-phenotype-through-modulation-of-inflammation
#2
Janek Hyzewicz, Jun Tanihata, Mutsuki Kuraoka, Yuko Nitahara-Kasahara, Teiva Beylier, Urs T Ruegg, Axel Vater, Shin'ichi Takeda
Inflammatory events occurring in dystrophic muscles contribute to the progression of Duchenne muscular dystrophy (DMD). Low-intensity training (LIT) attenuates the phenotype of mdx mice, an animal model for DMD. Therefore, we postulated that LIT could have anti-inflammatory properties. We assessed levels of inflammatory cytokines and infiltrated immune cells in gastrocnemius muscle of mdx mice after LIT. We detected high levels of complement component C5a, chemokine ligand (CCL) 2, CD68(+) monocytes/macrophages, and proinflammatory M1 macrophages in muscles of mdx mice...
March 15, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28279502/circulating-microparticle-subpopulations-in-systemic-lupus-erythematosus-are-affected-by-disease-activity
#3
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...
June 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28223055/plasma-monocyte-chemotactic-protein-1-is-associated-with-acute-kidney-injury-and-death-after-cardiac-operations
#4
Dennis G Moledina, Selin Isguven, Eric McArthur, Heather Thiessen-Philbrook, Amit X Garg, Michael Shlipak, Richard Whitlock, Peter A Kavsak, Steven G Coca, Chirag R Parikh
BACKGROUND: Monocyte chemotactic protein-1 (MCP-1; chemokine C-C ligand-2 [CCL-2]) is upregulated in ischemia-reperfusion injury and is a promising biomarker of inflammation in cardiac operations. METHODS: We measured preoperative and postoperative plasma MCP-1 levels in adults undergoing cardiac operations to evaluate the association of perioperative MCP-1 levels with acute kidney injury (AKI) and death in Translational Research Investigating Biomarker Endpoints in AKI (TRIBE-AKI), a prospective, multicenter, observational cohort...
February 18, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28222998/dynamics-of-apc-recruitment-at-the-site-of-injection-following-injection-of-vaccine-adjuvants
#5
Susan van Aalst, Irene Stephanie Ludwig, Peter Johannes Sylvester van Kooten, Ruurd van der Zee, Willem van Eden, Femke Broere
Vaccines often contain adjuvants to strengthen the response to the vaccine antigen. However, their modes of action at the site of injection (SOI) are poorly understood. Therefore, we assessed the local effects of adjuvant on the innate immune system in mice. We investigated the safe, widely used adjuvants MF59 and aluminum hydroxide (alum), as well as trehalose-6,6'-dibehenate (TDB), Complete Freund's Adjuvant (CFA) and the Toll-Like-Receptor-ligands lipopolysaccharide (LPS) and Pam3CysSerLys4 (Pam3CSK4). We assessed muscle immune cell infiltration after adjuvant injection and observed 16h post immunization (hpi) an increased influx with CFA, MF59 and TDB, but not with alum, LPS or Pam3CSK4...
February 17, 2017: Vaccine
https://www.readbyqxmd.com/read/28161330/testosterone-increases-ccl-2-expression-in-visceral-adipose-tissue-from-obese-women-of-reproductive-age
#6
Nicolás Crisosto, Cristián Flores, Manuel Maliqueo, Bárbara Echiburú, Jaime Vásquez, Fernando Maluenda, Teresa Sir-Petermann
CONTEXT: Hyperandrogenic states and obesity in women are associated with insulin-resistance. Androgens reduce glucose uptake in adipose cells and increase TNFα production in peripheral monocytes. Inflammatory cytokines have a known detrimental effect on insulin resistance. The aim of the present study was to explore the role of testosterone in local cytokine production in visceral adipose tissue from women of reproductive age. DESIGN: Twenty-four women 18-40 years old, undergoing elective abdominal surgery for benign and non-inflammatory conditions, were recruited for the study...
February 1, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28160867/fargesin-exerts-anti-inflammatory-effects-in-thp-1-monocytes-by-suppressing-pkc-dependent-ap-1-and-nf-%C3%A4-b-signaling
#7
Thu-Huyen Pham, Man-Sub Kim, Minh-Quan Le, Yong-Seok Song, Yesol Bak, Hyung-Won Ryu, Sei-Ryang Oh, Do-Young Yoon
BACKGROUND: Fargesin is a lignan from Magnolia fargesii, an oriental medicine used in the treatment of nasal congestion and sinusitis. The anti-inflammatory properties of this compound have not been fully elucidated yet. PURPOSE: This study focused on assessing the anti-inflammatory effects of fargesin on phorbal ester (PMA)-stimulated THP-1 human monocytes, and the molecular mechanisms underlying them. METHODS: Cell viability was evaluated by MTS assay...
January 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28146410/almond-skin-polyphenol-extract-inhibits-inflammation-and-promotes-lipolysis-in-differentiated-3t3-l1-adipocytes
#8
Wen-Chung Huang, Chi-Yuan Chen, Shu-Ju Wu
Studies have shown that polyphenols reduce the risk of inflammation-related diseases and upregulates energy expenditure in adipose tissue. Here, we investigated the mechanism of the anti-inflammatory and antiobesity effects of almond skin polyphenol extract (ASP) in differentiated 3T3-L1 adipocytes. The antioxidant effects of ASP were measured based on DPPH radical scavenging activity, Trolox equivalent antioxidant capacity, and total phenolic content. Differentiated 3T3-L1 cells were treated with ASP. Subsequently, lipolysis proteins and transcription factors of adipogenesis were measured...
February 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28101208/effect-of-bovine-dialyzable-leukocyte-extract-on-induction-of-cell-differentiation-and-death-in-k562-human-chronic-myelogenous-leukemia-cells
#9
Crystel A Sierra-Rivera, Moisés A Franco-Molina, Edgar Mendoza-Gamboa, Pablo Zapata-Benavides, Jesús Santaolalla-Tapia, Erika E Coronado-Cerda, Reyes S Tamez-Guerra, Cristina Rodríguez-Padilla
Differentiation induction therapy is an attractive approach in leukemia treatment due to the fact that in blast crisis stage, leukemic cells lose their differentiation capacity. Therefore, it has been proposed as a therapeutic strategy to induce terminal differentiation of leukemic blast cells into a specific lineage, leading to prevention of high proliferation rates. The aim of the present study was to demonstrate the potential of cell differentiation and death induced by bovine dialyzable leukocyte extract (bDLE) in the K562 cell line...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/27863506/interleukin-37-limits-monosodium-urate-crystal-induced-innate-immune-responses-in-human-and-murine-models-of-gout
#10
Lei Liu, Yu Xue, Yingfeng Zhu, Dandan Xuan, Xue Yang, Minrui Liang, Juan Wang, Xiaoxia Zhu, Jiong Zhang, Hejian Zou
BACKGROUND: Interleukin (IL)-37 has emerged as a fundamental inhibitor of innate immunity. Acute gout is a self-limiting inflammatory response to monosodium urate (MSU) crystals. In the current study, we assessed the preventive and therapeutic effect of recombinant human IL-37 (rhIL-37) in human and murine gout models. METHODS: We investigated the expression of IL-37 in patients with active and inactive gouty arthritis and assessed the effect of rhIL-37 in human and murine gout models: a human monocyte cell line (THP-1) and human synovial cells (containing macrophage-like and fibroblast-like synoviocytes) exposed to MSU crystals, a peritoneal murine model of gout and a murine gouty arthritis model...
November 18, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27846260/alternatively-activated-m2-macrophage-phenotype-is-inducible-by-endothelin-1-in-cultured-human-macrophages
#11
Stefano Soldano, Carmen Pizzorni, Sabrina Paolino, Amelia Chiara Trombetta, Paola Montagna, Renata Brizzolara, Barbara Ruaro, Alberto Sulli, Maurizio Cutolo
BACKGROUND: Alternatively activated (M2) macrophages are phenotypically characterized by the expression of specific markers, mainly macrophage scavenger receptors (CD204 and CD163) and mannose receptor-1 (CD206), and participate in the fibrotic process by over-producing pro-fibrotic molecules, such as transforming growth factor-beta1 (TGFbeta1) and metalloproteinase (MMP)-9. Endothelin-1 (ET-1) is implicated in the fibrotic process, exerting its pro-fibrotic effects through the interaction with its receptors (ETA and ETB)...
2016: PloS One
https://www.readbyqxmd.com/read/27831589/the-anti-inflammatory-vasostatin-2-attenuates-atherosclerosis-in-apoe-mice-and-inhibits-monocyte-macrophage-recruitment
#12
Weixin Xiong, Xiaoqun Wang, Daopeng Dai, Bao Zhang, Lin Lu, Rong Tao
We showed previously that reduced level of vasostatin-2 (VS-2) correlates to the presence and severity of coronary artery disease. In this study, we aimed to figure out the role of chromogranin A (CGA) derived VS-2 in the development of atherosclerosis and monocyte/macrophage recruitment. Apolipoprotein E-deficient (ApoE(-/-)) mice fed a high-fat diet exhibited attenuated lesion size by 65 % and 41 % in En face and aortic root Oil red O staining, MOMA-2 positive area by 64 %, respectively, in VS-2 treatment group compared with PBS group...
November 10, 2016: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/27780575/expression-kinetics-of-rantes-and-mcp-1-in-the-brain-of-deer-mice-peromyscus-maniculatus-infected-with-vesicular-stomatitis-new-jersey-virus
#13
L P Mesquita, F R P Bruhn, P C Maiorka, E W Howerth
The vesicular stomatitis virus (VSV) causes encephalitis in mice when inoculated intranasally. The deer mouse (Peromyscus maniculatus), a native New World rodent, is also susceptible to VSV infection and develops similar central nervous system (CNS) lesions to those observed in other rodent species. Chemokines, such as regulated on activation, normal T-cell expressed and secreted (RANTES; CCL-5) and monocyte chemoattractant protein (MCP)-1 (CCL-2), which are important for chemotaxis and activation of inflammatory cells, are expressed during the course of VSV encephalitis...
November 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27723233/distinct-inflammatory-phenotypes-of-microglia-and-monocyte-derived-macrophages-in-alzheimer-s-disease-models-effects-of-aging-and-amyloid-pathology
#14
Elodie Martin, Céline Boucher, Bertrand Fontaine, Cécile Delarasse
Alzheimer's disease (AD) is a neurodegenerative disease characterized by formation of amyloid-β (Aβ) plaques, activated microglia, and neuronal cell death leading to progressive dementia. Recent data indicate that microglia and monocyte-derived macrophages (MDM) are key players in the initiation and progression of AD, yet their respective roles remain to be clarified. As AD occurs mostly in the elderly and aging impairs myeloid functions, we addressed the inflammatory profile of microglia and MDM during aging in TgAPP/PS1 and TgAPP/PS1dE9, two transgenic AD mouse models, compared to WT littermates...
February 2017: Aging Cell
https://www.readbyqxmd.com/read/27664471/death-receptor-3-promotes-chemokine-directed-leukocyte-recruitment-in-acute-resolving-inflammation-and-is-essential-for-pathological-development-of-mesothelial-fibrosis-in-chronic-disease
#15
William V Perks, Ravinder K Singh, Gareth W Jones, Jason P Twohig, Anwen S Williams, Ian R Humphreys, Philip R Taylor, Simon A Jones, Eddie C Y Wang
Death receptor 3 (DR3; TNFRSF25) and its tumor necrosis factor-like ligand TL1A (TNFSF15) control several processes in inflammatory diseases through the expansion of effector T cells and the induction of proinflammatory cytokines from myeloid and innate lymphoid cells. Using wild-type (DR3(+/+)) and DR3-knockout (DR3(-/-)) mice, we show that the DR3/TL1A pathway triggers the release of multiple chemokines after acute peritoneal inflammation initiated by a single application of Staphylococcus epidermidis supernatant, correlating with the infiltration of multiple leukocyte subsets...
November 2016: American Journal of Pathology
https://www.readbyqxmd.com/read/27396406/elevations-in-the-levels-of-nf-%C3%AE%C2%BAb-and-inflammatory-chemotactic-factors-in-the-brains-with-alzheimer-s-disease-one-mechanism-may-involve-%C3%AE-3-nicotinic-acetylcholine-receptor
#16
Yuan Liao, Xiao-Lan Qi, Ying Cao, Wen-Feng Yu, Rivka Ravid, Bengt Winblad, Jin-Jing Pei, Zhi-Zhong Guan
The purpose of this study was to investigate the alterations in the levels of nuclear factor κBp65 (NF-κBp65), monocyte chemoattractant protein 1 (MCP-1/CCL-2) and macrophage inflammatory protein 1α (MIP-1α/CCL-3) in relationship to the expression of α3 nicotinic acetylcholine receptor (nAChR) during the pathogenesis of Alzheimer's disease (AD). The post-mortem human brains of AD and age-matched control individuals, SH-SY5Y and U87MG cell lines exposed to β-amyloid peptide (Aβ), as well as the SH-SY5Y cells in which α3 nAChR was down-regulated by siRNA were used to study the possible expression changes of the targets such as NF-κBp65, MCP-1, MIP-1α and α3 nAChR...
July 3, 2016: Current Alzheimer Research
https://www.readbyqxmd.com/read/27340563/lecithin-bound-iodine-prevents-disruption-of-tight-junctions-of-retinal-pigment-epithelial-cells-under-hypoxic-stress
#17
Masahiko Sugimoto, Mineo Kondo
Aim. We investigated whether lecithin-bound iodine (LBI) can protect the integrity of tight junctions of retinal pigment epithelial cells from hypoxia. Method. Cultured human retinal pigment epithelial (ARPE-19) cells were pretreated with LBI. To mimic hypoxic conditions, cells were incubated with CoCl2. We compared the integrity of the tight junctions (TJs) of control to cells with either LBI alone, CoCl2 alone, or LBI + CoCl2. The levels of cytokines in the conditioned media were also determined. Results...
2016: Journal of Ophthalmology
https://www.readbyqxmd.com/read/27231721/high-salt-induces-anti-inflammatory-m%C3%AE-2-like-phenotype-in-peripheral-macrophages
#18
Suneetha Amara, Margaret Whalen, Venkataswarup Tiriveedhi
Macrophages play a critical role in inflammation and antigen-presentation. Abnormal macrophage function has been attributed in autoimmune diseases and cancer progression. Recent evidence suggests that high salt tissue micro-environment causes changes in macrophage activation. In our current report, we studied the role of extracellular sodium chloride on phenotype changes in peripheral circulating monocyte/macrophages collected from healthy donors. High salt (0.2 M NaCl vs basal 0.1 M NaCl) treatment resulted in a decrease in MΦ1 macrophage phenotype (CD11b(+)CD14(high)CD16(low)) from 77...
September 2016: Biochemistry and Biophysics Reports
https://www.readbyqxmd.com/read/27226520/monocyte-exosomes-induce-adhesion-molecules-and-cytokines-via-activation-of-nf-%C3%AE%C2%BAb-in-endothelial-cells
#19
Norina Tang, Bing Sun, Archana Gupta, Hans Rempel, Lynn Pulliam
HIV-infected individuals have activated monocytes with an IFNα phenotype and elevated levels of circulating LPS. These individuals also have a risk of premature cardiovascular disease. The effect of activated monocyte exosomes (Exos) on endothelial cells is unknown. To determine whether Exos from immune-activated monocytes could alter endothelial cell expression and contribute to monocyte/macrophage transmigration and adhesion, we isolated Exos from monocytes stimulated with IFNα, LPS, or both (I/L). We show that monocyte Exos contain different inflammatory microRNA cargo depending on stimulation...
September 2016: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/27135421/age-associated-vascular-inflammation-promotes-monocytosis-during-atherogenesis
#20
Wei Du, Christine Wong, Yang Song, Hua Shen, Daniel Mori, Noemi Rotllan, Nathan Price, Anca D Dobrian, Hailong Meng, Steven H Kleinstein, Carlos Fernandez-Hernando, Daniel R Goldstein
Aging leads to a proinflammatory state within the vasculature without disease, yet whether this inflammatory state occurs during atherogenesis remains unclear. Here, we examined how aging impacts atherosclerosis using Ldlr(-/-) mice, an established murine model of atherosclerosis. We found that aged atherosclerotic Ldlr(-/-) mice exhibited enhanced atherogenesis within the aorta. Aging also led to increased LDL levels, elevated blood pressure on a low-fat diet, and insulin resistance after a high-fat diet (HFD)...
August 2016: Aging Cell
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