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macrophage derived chemokine

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https://www.readbyqxmd.com/read/28912156/neutrophils-are-critical-for-myelin-removal-in-a-peripheral-nerve-injury-model-of-wallerian-degeneration
#1
Jane A Lindborg, Matthias Mack, Richard E Zigmond
Wallerian degeneration (WD) is considered an essential preparatory stage to the process of axonal regeneration. In the peripheral nervous system, infiltrating monocyte-derived macrophages that utilize the chemokine receptor CCR2 to gain entry to injured tissues from the bloodstream, are purportedly necessary for efficient WD. However, our lab has previously reported that myelin clearance in the injured sciatic nerve proceeds unhindered in the Ccr2(-/-) mouse model. Here, we extensively characterize WD in male Ccr2(-/-) mice and identify a compensatory mechanism of WD that is facilitated primarily by neutrophils...
September 14, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28910354/differential-impact-of-the-dual-ccr2-ccr5-inhibitor-cenicriviroc-on-migration-of-monocyte-and-lymphocyte-subsets-in-acute-liver-injury
#2
Tobias Puengel, Oliver Krenkel, Marlene Kohlhepp, Eric Lefebvre, Tom Luedde, Christian Trautwein, Frank Tacke
A hallmark of acute hepatic injury is the recruitment of neutrophils, monocytes and lymphocytes, including natural killer (NK) or T cells, towards areas of inflammation. The recruitment of leukocytes from their reservoirs bone marrow or spleen into the liver is directed by chemokines such as CCL2 (for monocytes) and CCL5 (for lymphocytes). We herein elucidated the impact of chemokine receptor inhibition by the dual CCR2 and CCR5 inhibitor cenicriviroc (CVC) on the composition of myeloid and lymphoid immune cell populations in acute liver injury...
2017: PloS One
https://www.readbyqxmd.com/read/28903498/from-the-cover-lifelong-exposure-of-c57bl-6n-male-mice-to-bisphenol-a-or-bisphenol-s-reduces-recovery-from-a-myocardial-infarction
#3
Amanda Kasneci, Jun Seong Lee, Tae Jin Yun, Jijun Shang, Shaun Lampen, Tamar Gomolin, Cheolho C Cheong, Lorraine E Chalifour
Bisphenol A (BPA) leaches from plastics to contaminate foodstuffs. Analogs, such as bisphenol S (BPS), are now used increasingly in manufacturing. Greater BPA exposure has been correlated with exacerbation of cardiovascular disease, including myocardial infarction (MI). To test the hypothesis that bisphenol exposure impairs cardiac healing, we exposed C57bl/6n mice to water containing 25ng/ml BPA or BPS from conception and surgically induced an MI in adult male progeny. Increased early death and cardiac dilation, and reduced cardiac function were found post-MI in BPA- and BPS-exposed mice...
September 1, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28902427/nlrp3-inflammasome-driven-liver-injury-and-fibrosis-roles-of-il-17-and-tnf
#4
Alexander Wree, Matthew D McGeough, Maria Eugenia Inzaugarat, Akiko Eguchi, Susanne Schuster, Casey D Johnson, Carla A Peña, Lukas J Geisler, Bettina G Papouchado, Hal M Hoffman, Ariel E Feldstein
The NLRP3 inflammasome, a caspase-1 activation platform plays a key role in the modulation of liver inflammation and fibrosis. Here, we tested the hypothesis that interleukin 17 (IL-17) and tumor necrosis factor (TNF) are key cytokines involved in amplifying and perpetuating the liver damage and fibrosis resulting from NLRP3 activation. To address this hypothesis gain of function Nlrp3(A350V) knock-in mice were bred onto il17a and Tnf knockout backgrounds allowing for constitutive Nlrp3 activation in myeloid derived cells in mice deficient in IL-17 or TNF...
September 13, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28899579/cxcl4-induced-macrophages-in-human-atherosclerosis
#5
Gabriele Domschke, Christian A Gleissner
Atherosclerosis is considered an inflammatory disease of the arterial wall. Monocytes and monocyte-derived cells (most often termed macrophages) play an essential role in the formation of atherosclerotic lesions, as they take up lipids leading to subsequent foam cell formation accompanied by release of pro-inflammatory cytokines. Similarly, platelets have been discovered to represent an important cell type mediating inflammatory and immune processes in atherogenesis, mainly by secreting chemokines, which are stored in the platelets' alpha granules, upon platelet activation...
September 9, 2017: Cytokine
https://www.readbyqxmd.com/read/28898872/macrophage-derived-chemokine-a-putative-marker-of-pharmacological-therapy-response-in-major-depression
#6
Vladimir M Milenkovic, Nina Sarubin, Sven Hilbert, Thomas C Baghai, Friederike Stöffler, Juan M Lima-Ojeda, André Manook, Khalifa Almeqbaali, Christian H Wetzel, Rainer Rupprecht, Caroline Nothdurfter
INTRODUCTION: Inflammatory processes play an important and complex role in the pathophysiology of major depressive disorder (MDD), but, so far, no specific investigation of chemokines exists. METHODS: In this study, we investigated the changes of plasma chemokine levels (eotaxin-1, eotaxin-3, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, and TARC) in 47 MDD patients before (PRE) and after 1 and 6 weeks of pharmacological treatment (POST1 and POST6) in relation to the response to antidepressive therapy...
September 13, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28891216/the-cd45-fraction-in-murine-adipose-tissue-derived-stromal-cells-harbor-immune-inhibitory-inflammatory-cells
#7
Alessandro Nasti, Yoshio Sakai, Akihiro Seki, Geraldine Belen Buffa, Takuya Komura, Hatsune Mochida, Masatoshi Yamato, Keiko Yoshida, Tuyen T B Ho, Masayuki Takamura, Soichiro Usui, Takashi Wada, Masao Honda, Shuichi Kaneko
Stromal cells in adipose tissue are useful for repair/regenerative therapy as they harbor a substantial number of mesenchymal stem cells; therefore, freshly isolated autologous uncultured adipose tissue-derived stromal cells (u-ADSCs) are useful for regenerative therapy, and obviate the need for mesenchymal stem cells. We evaluated the therapeutic effect of murine u-ADSCs and sorted subsets of u-ADSCs in a concanavalin A (ConA)-induced murine model of hepatitis, as well as their characteristics. We found that 10% to 20% of u-ADSCs expressed the CD45 leukocyte-related antigen...
September 11, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28887632/multipeptide-coupled-nanoparticles-induce-tolerance-in-humanised-hla-transgenic-mice-and-inhibit-diabetogenic-cd8-t-cell-responses-in-type-1-diabetes
#8
Xinyu Xu, Lingling Bian, Min Shen, Xin Li, Jing Zhu, Shuang Chen, Lei Xiao, Qingqing Zhang, Heng Chen, Kuanfeng Xu, Tao Yang
AIMS/HYPOTHESIS: Induction of antigen-specific immunological tolerance may provide an attractive immunotherapy in the NOD mouse model but the conditions that lead to the successful translation to human type 1 diabetes are limited. In this study, we covalently linked 500 nm carboxylated polystyrene beads (PSB) with a mixture of immunodominant HLA-A*02:01-restricted epitopes (peptides-PSB) that may have high clinical relevance in humans as they promote immune tolerance; we then investigated the effect of the nanoparticle-peptide complexes on T cell tolerance...
September 8, 2017: Diabetologia
https://www.readbyqxmd.com/read/28883509/the-circadian-clock-in-immune-cells-controls-the-magnitude-of-leishmania-parasite-infection
#9
Silke Kiessling, Geneviève Dubeau-Laramée, Hyejee Ohm, Nathalie Labrecque, Martin Olivier, Nicolas Cermakian
The intracellular parasite Leishmania uses neutrophils and macrophages as host cells upon infection. These immune cells harbour their own intrinsic circadian clocks, known to influence many aspects of their functions. Therefore, we tested whether the host circadian clocks regulate the magnitude of Leishmania major infection in mice. The extent of parasitic infection varied over 24 h in bone marrow-derived macrophages in vitro and in two different in vivo models, footpad and peritoneal cavity infection. In vivo this was paralleled by time of day-dependent neutrophil and macrophage infiltration to the infection site and rhythmic chemokine expression...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28878765/dyslipidemic-diet-induced-monocyte-priming-and-dysfunction-in-non-human-primates-is-triggered-by-elevated-plasma-cholesterol-and-accompanied-by-altered-histone-acetylation
#10
John D Short, Sina Tavakoli, Huynh Nga Nguyen, Ana Carrera, Chelbee Farnen, Laura A Cox, Reto Asmis
Monocytes and the recruitment of monocyte-derived macrophages into sites of inflammation play a key role in atherogenesis and other chronic inflammatory diseases linked to cardiometabolic syndrome and obesity. Previous studies from our group have shown that metabolic stress promotes monocyte priming, i.e., enhanced adhesion and accelerated chemotaxis of monocytes in response to chemokines, both in vitro and in dyslipidemic LDLR(-/-) mice. We also showed that metabolic stress-induced monocyte dysfunction is, at least to a large extent caused by the S-glutathionylation, inactivation, and subsequent degradation of mitogen-activated protein kinase phosphatase 1...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28877226/distinct-patterns-of-innate-immune-activation-by-clinical-isolates-of-respiratory-syncytial-virus
#11
Ruth Levitz, Yajing Gao, Igor Dozmorov, Ran Song, Edward K Wakeland, Jeffrey S Kahn
Respiratory syncytial virus (RSV) is a major respiratory pathogen of infants and young children. Multiple strains of both subgroup A and B viruses circulate during each seasonal epidemic. Genetic heterogeneity among RSV genomes, in large part due to the error prone RNA-dependent, RNA polymerase, could mediate variations in pathogenicity. We evaluated clinical strains of RSV for their ability to induce the innate immune response. Subgroup B viruses were used to infect human pulmonary epithelial cells (A549) and primary monocyte-derived human macrophages (MDM) from a variety of donors...
2017: PloS One
https://www.readbyqxmd.com/read/28871251/th17-inducing-cytokines-il-6-and-il-23-are-crucial-for-granuloma-formation-during-experimental-paracoccidioidomycosis
#12
Fabrine Sales Massafera Tristão, Fernanda Agostini Rocha, Daniela Carlos, Natália Ketelut-Carneiro, Camila Oliveira Silva Souza, Cristiane Maria Milanezi, João Santana Silva
Paracoccidioidomycosis (PCM), a chronic granulomatous disease caused by the thermally dimorphic fungus Paracoccidioides brasiliensis and Paracoccidioides lutzii, has the highest mortality rate among systemic mycosis. The T helper 1-mediated immunity is primarily responsible for acquired resistance during P. brasiliensis infection, while susceptibility is associated with Th2 occurrence. Th17 is a population of T CD4(+) cells that, among several chemokines and cytokines, produces IL-17A and requires the presence of IL-1, IL-6, and TGF-β for differentiation in mice and IL-23 for its maintenance...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28869080/altered-chemokine-receptor-expression-in-the-peripheral-blood-lymphocytes-in-polymyositis-and-dermatomyositis
#13
Ziwei Zhu, Chunshu Yang, Jianing Wang, Qianhui Feng, Qi Chen, Pingting Yang
OBJECTIVE: To examine the expression of chemokine receptors in different peripheral blood T-cell subsets in patients with polymyositis (PM) and dermatomyositis (DM). METHODS: We used flow cytometry to measure the frequencies of chemokinereceptors CXCR3 and CCR4 expression in the CD4(+) or CD8(+) lymphocytes. Enzyme linked immunosorbent assays were also used to measure the concentrations of C-X-C motif chemokine 10 (CXCL10), thymus and activation regulated chemokine (TARC) and macrophage derived chemokine (MDC)...
August 28, 2017: Cytokine
https://www.readbyqxmd.com/read/28861075/ebola-virus-glycoprotein-induces-an-innate-immune-response-in-vivo-via-tlr4
#14
Chih-Yun Lai, Daniel P Strange, Teri Ann S Wong, Axel T Lehrer, Saguna Verma
Ebola virus (EBOV), a member of the Filoviridae family, causes the most severe form of viral hemorrhagic fever. Although no FDA licensed vaccine or treatment against Ebola virus disease (EVD) is currently available, Ebola virus glycoprotein (GP) is the major antigen used in all candidate Ebola vaccines. Recent reports of protection as quickly as within 6 days of administration of the rVSV-based vaccine expressing EBOV GP before robust humoral responses were generated suggests that the innate immune responses elicited early after vaccination may contribute to the protection...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28844880/the-fgf21-ccl11-axis-mediates-beiging-of-white-adipose-tissues-by-coupling-sympathetic-nervous-system-to-type-2-immunity
#15
Zhe Huang, Ling Zhong, Jimmy Tsz Hang Lee, Jialiang Zhang, Donghai Wu, Leiluo Geng, Yu Wang, Chi-Ming Wong, Aimin Xu
Type 2 cytokines are important signals triggering biogenesis of thermogenic beige adipocytes in white adipose tissue (WAT) during cold acclimation. However, how cold activates type 2 immunity in WAT remains obscure. Here we show that cold-induced type 2 immune responses and beiging in subcutaneous WAT (scWAT) are abrogated in mice with adipose-selective ablation of FGF21 or its co-receptor β-Klotho, whereas such impairments are reversed by replenishment with chemokine CCL11. Mechanistically, FGF21 acts on adipocytes in an autocrine manner to promote the expression and secretion of CCL11 via activation of ERK1/2, which drives recruitment of eosinophils into scWAT, leading to increases in accumulation of M2 macrophages, and proliferation and commitment of adipocyte precursors into beige adipocytes...
September 5, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28843961/atf4-regulates-ccl2-expression-to-promote-endometrial-cancer-growth-by-controlling-macrophage-infiltration
#16
Bin Liu, Pingping Chen, Di Xi, Hong Zhu, Yuping Gao
Activating transcription factor 4 (ATF4), an endoplasmic reticulum stress-inducible transcription factor, plays important roles in cancer progression and resistance to therapy. However, no report is available about its roles in endometrial cancer (EC). In this study, we found that ATF4 is commonly expressed in EC cell lines. Loss-of-function studies in two EC cell lines showed that ATF4 knockdown suppresses tumor growth of EC in vivo without influencing cell proliferation in vitro. And xenograft tumors derived from ATF4-knockdown cells had reduced M2 macrophage infiltration...
August 24, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28843543/microglia-and-macrophages-differ-in-their-inflammatory-profile-after-permanent-brain-ischemia
#17
REVIEW
Juan G Zarruk, Andrew D Greenhalgh, Samuel David
We studied the expression of pro- and anti-inflammatory molecules in microglia and infiltrating monocyte-derived macrophages after permanent Middle Cerebral Artery Occlusion (pMCAO). LysM-EGFP knock-in mice were used to distinguish between these two cell types, as peripheral myeloid cells are LysM-EGFP(+), while microglia are not. This was confirmed with P2ry12 (a microglial specific marker), Iba-1 and EGFP immunostaining. The peak of LysM-EGFP(+) myeloid cell infiltration was 72h post-ischemia, and were distributed evenly in the lesion core, surrounded by a dense region of microglia...
August 24, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28840536/astilbin-alleviates-sepsis-induced-acute-lung-injury-by-inhibiting-the-expression-of-macrophage-inhibitory-factor-in-rats
#18
Hong-Bo Zhang, Li-Chao Sun, Li-da Zhi, Qian-Kuan Wen, Zhi-Wei Qi, Sheng-Tao Yan, Wen Li, Guo-Qiang Zhang
Sepsis is a systemic inflammatory response syndrome caused by severe infections. Astilbin is a dihydroflavonol derivative found in many medicinal and food plants with multiple pharmacological functions. To investigate the effects of astilbin on sepsis-induced acute lung injury (ALI), cecal ligation and puncture was performed on rats to establish a sepsis-induced ALI model; these rats were then treated with astilbin at different concentrations. Lung injury scores, including lung wet/dry ratio, protein leakage, myeloperoxidase activity, and inflammatory cell infiltration were determined to evaluate the effects of astilbin on sepsis-induced ALI...
August 24, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28835616/leukocytic-toll-like-receptor-2-deficiency-preserves-cardiac-function-and-reduces-fibrosis-in-sustained-pressure-overload
#19
Jiong-Wei Wang, Magda S C Fontes, Xiaoyuan Wang, Suet Yen Chong, Elise L Kessler, Ya-Nan Zhang, Judith J de Haan, Fatih Arslan, Saskia C A de Jager, Leo Timmers, Toon A B van Veen, Carolyn S P Lam, Dominique P V de Kleijn
An involement of Toll-like receptor 2 (TLR2) has been established in cardiac dysfunction after acute myocardial infarction; however, its role in chronic pressure overload is unclear. We sought to evaluate the role of TLR2 in cardiac hypertrophy, fibrosis and dysfunction in sustained pressure overload. We induced pressure overload via transverse aortic constriction (TAC) in TLR2(-/-) and wild type (WT) mice, and followed temporal changes over 8 weeks. Despite similar increases in heart weight, left ventricular (LV) ejection fraction (EF) and diastolic function (mitral E/A ratio) were preserved in TLR2(-/-) mice but impaired in WT mice following TAC...
August 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28833504/cytotoxic-anti-melanoma-drugs-suppress-the-activation-of-m2-macrophages
#20
Taku Fujimura, Aya Kakizaki, Yumi Kambayashi, Yota Sato, Kayo Tanita, Chunbing Lyu, Sadanori Furudate, Setsuya Aiba
Together with regulatory T cells (Tregs), tumor-associated macrophages (TAMs) play roles in maintaining the tumor microenvironment. Though cytotoxic anti-melanoma drugs such as dacarbazine (DTIC), nimustine hydrochloride (ACNU), and vincristine (VCR) have been used for the treatment of malignant melanoma as adjuvant therapy in Japan, the detailed mechanisms of their immunomodulatory effects are not fully understood. Since the majority of TAMs are alternatively activated M2 macrophages that favor tumor development, the aim of this study was to elucidate the immunomodulatory effects of these reagents on human monocyte-derived M2 macrophages...
August 20, 2017: Experimental Dermatology
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