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https://www.readbyqxmd.com/read/28432984/cigarette-smoke-extract-counteracts-atheroprotective-effects-of-high-laminar-flow-on-endothelial-function
#1
Sindy Giebe, Natalia Cockcroft, Katherine Hewitt, Melanie Brux, Anja Hofmann, Henning Morawietz, Coy Brunssen
Tobacco smoking and hemodynamic forces are key stimuli in the development of endothelial dysfunction and atherosclerosis. High laminar flow has an atheroprotective effect on the endothelium and leads to a reduced response of endothelial cells to cardiovascular risk factors compared to regions with disturbed or low laminar flow. We hypothesize that the atheroprotective effect of high laminar flow could delay the development of endothelial dysfunction caused by cigarette smoking. Primary human endothelial cells were stimulated with increasing dosages of aqueous cigarette smoke extract (CSEaq)...
April 7, 2017: Redox Biology
https://www.readbyqxmd.com/read/28431906/transgenic-mice-with-increased-astrocyte-expression-of-ccl2-show-altered-behavioral-effects-of-alcohol
#2
Jennifer G Bray, Amanda J Roberts, Donna L Gruol
Emerging research provides strong evidence that activation of CNS glial cells occurs in neurological diseases and brain injury and results in elevated production of neuroimmune factors. These factors can contribute to pathophysiological processes that lead to altered CNS function. Recently, studies have also shown that both acute and chronic alcohol consumption can produce activation of CNS glial cells and the production of neuroimmune factors, particularly the chemokine CCL2. The consequences of alcohol-induced increases in CCL2 levels in the CNS have yet to be fully elucidated...
April 18, 2017: Neuroscience
https://www.readbyqxmd.com/read/28430671/elevated-production-of-nociceptive-cc-chemokines-and-se-selectin-in-patients-with-low-back-pain-and-the-effects-of-spinal-manipulation-a-non-randomized-clinical-trial
#3
Julita A Teodorczyk-Injeyan, Marion McGregor, John J Triano, H Stephen Injeyan
BACKGROUND: The involvement of inflammatory components in the pathophysiology of low back pain is poorly understood. It has been suggested that spinal manipulative therapy (SMT) may exert anti-inflammatory effects. PURPOSE: To determine the involvement of inflammation-associated chemokines (CC series) in the pathogenesis of non-specific low back pain and to evaluate the effect of SMT on that process. METHODS: Patients presenting with non-radicular, non-specific low back pain (minimum pain score 3 on 10 point visual analogue scale, VAS) were recruited according to stringent inclusion criteria...
April 19, 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28427424/microglial-depletion-alters-the-brain-neuroimmune-response-to-acute-binge-ethanol-withdrawal
#4
T Jordan Walter, Fulton T Crews
BACKGROUND: Recent studies have implicated microglia-the resident immune cells of the brain-in the pathophysiology of alcoholism. Indeed, post-mortem alcoholic brains show increased microglial markers and increased immune gene expression; however, the effects of ethanol on microglial functioning and how this impacts the brain remain unclear. In this present study, we investigate the effects of acute binge ethanol on microglia and how microglial depletion changes the brain neuroimmune response to acute binge ethanol withdrawal...
April 20, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28425867/chemokines-and-relevant-micrornas-in-the-atherogenic-process
#5
Dimitry A Chistiakov, Alexander N Orekhov, Yuri V Bobryshev
Chemokines play a significant role in initial and advanced steps of atherogenesis. In early steps, chemokines control the adhesion of leukocytes to endothelial cells (ECs) followed by transmigration of monocytes and their deposition in the intima where they differentiate to proinflammatory macrophages. Except proinflammatory activity, chemokines are responsible for homeostasis and homing of progenitor cells. Recently, microRNAs (miRs) were found to control expression and activity of chemokines in ECs, vascular smooth muscle cells (VSMCs), and macrophages at different steps of atherogenesis...
April 19, 2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/28424660/ccl2-monocyte-chemoattractant-protein-1-and-parathyroid-hormone-action-on-bone
#6
REVIEW
Jawed Akhtar Siddiqui, Nicola C Partridge
Chemokines are small molecules that play a crucial role as chemoattractants for several cell types, and their components are associated with host immune responses and repair mechanisms. Chemokines selectively recruit monocytes, neutrophils, and lymphocytes and induce chemotaxis through the activation of G protein-coupled receptors. Two well-described chemokine families (CXC and CC) are known to regulate the localization and trafficking of immune cells in cases of injury, infection, and tumors. Monocyte chemoattractant protein 1 (MCP-1/CCL2) is one of the important chemokines from the CC family that controls migration and infiltration of monocytes/macrophages during inflammation...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28424406/targeting-ccr2-with-its-antagonist-suppresses-viability-motility-and-invasion-by-downregulating-mmp-9-expression-in-non-small-cell-lung-cancer-cells
#7
Jun An, Ying Xue, Meijun Long, Ge Zhang, Junhang Zhang, Hang Su
Non-small cell lung cancer (NSCLC) is the most common type of lung cancer, which is the leading cancer killer in the world. Despite the recent advances in its diagnosis and therapy, the prognosis of NSCLC patients remains very poor, mainly due to the development of drug resistance and metastasis. Both the chemokine network and the matrix metalloproteinase (MMP) system play important roles in cancer cell metastasis. The disruption of CCL2/CCR2 chemokine signaling has been shown to suppress cancer cellviability and metastasis...
April 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28421067/c-c-motif-chemokine-ligand-2-ccl2-mediates-acute-lung-injury-induced-by-lethal-influenza-h7n9-virus
#8
Chengcai Lai, Keyu Wang, Zhongpeng Zhao, Liangyan Zhang, Hongjing Gu, Penghui Yang, Xiliang Wang
An avian-origin influenza A (H7N9) virus was a cause for concern in China in the spring of 2013. Most H7N9 infections resulted in acute respiratory distress syndrome (ARDS), which is a severe form of acute lung injury (ALI) that contributes to morbidity and mortality. In this study, we induced viral ALI by infecting wild-type and CCL2-deficient mice with influenza H7N9 virus. The results suggested a close association between C-C motif chemokine ligand 2 (CCL2) expressions and ALI induced by a lethal H7N9 virus strain (A/Hebei/01/2013)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28413983/peripheral-blood-mononuclear-cells-of-alzheimer-s-disease-patients-control-ccl4-and-cxcl10-levels-in-a-human-blood-brain-barrier-model
#9
Julie Vérité, Thierry Janet, Adrien Julian, Damien Chassaing, Guylène Page, Marc Paccalin
BACKGROUND: Alzheimer's disease (AD) is accompanied by a neuroinflammation triggering chemoattractant signals towards peripheral blood mononuclear cells (PBMCs), in turn could reduce amyloid plaques after transmigration through the blood brain barrier (BBB). But the chemotactic environment remains unclear. OBJECTIVE: To analyze five chemokines known to be involved in AD in three different cellular models to better understand the cellular and molecular interactions in the BBB...
April 17, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28411230/interaction-of-12-15-lipoxygenase-with-fatty-acids-alters-the-leukocyte-kinetics-leading-to-improved-post-myocardial-infarction-healing
#10
Ganesh V Halade, Vasundhara Kain, Kevin A Ingle, Sumanth D Prabhu
The metabolic transformation of fatty acids to form oxylipids using 12/15lipoxygenase (LOX) can promote either resolving or non-resolving inflammation. However, the mechanism of how 12/15LOX interacts with PUFA (polyunsaturated fatty acids) in post-myocardial infarction (MI) healing is unclear. Here, we reported the role of 12/15LOX in post-MI cardiac remodeling in a PUFA (10% w/w, 22 Kcal) enriched environment. Wild-type (WT; C57BL/6J) and 12/15LOX null (12/15LOX(-/-)) male mice of 8-12-weeks age were fed PUFA-enriched diet for 1 month and subjected to permanent coronary artery ligation...
April 14, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28410483/contributions-of-cd8-t-cells-to-the-pathogenesis-of-mouse-adenovirus-type-1-respiratory-infection
#11
Caitlyn T Molloy, Jennifer S Andonian, Harrison M Seltzer, Megan C Procario, Michael E Watson, Jason B Weinberg
CD8 T cells are key components of the immune response to viruses, but their roles in the pathogenesis of adenovirus respiratory infection have not been characterized. We used mouse adenovirus type 1 (MAV-1) to define CD8 T cell contributions to the pathogenesis of adenovirus respiratory infection. CD8 T cell deficiency in β2m(-/-) mice had no effect on peak viral replication in lungs, but clearance of virus was delayed in β2m(-/-) mice. Virus-induced weight loss and increases in bronchoalveolar lavage fluid total protein, IFN-γ, TNF-α, IL-10, CCL2, and CCL5 concentrations were less in β2m(-/-) mice than in controls...
April 11, 2017: Virology
https://www.readbyqxmd.com/read/28407300/thrombin-induces-ccl2-expression-in-human-lung-fibroblasts-via-p300-mediated-histone-acetylation-and-nf-kappab-activation
#12
Xiaoling Deng, Xiaoqiong Zhou, Yan Deng, Fan Liu, Xiaofan Feng, Qi Yin, Yinzhen Gu, Songlin Shi, Mingyan Xu
BACKGROUND AND OBJECTIVE: Thrombin has been shown to play a key role in lung diseases such as pulmonary fibrosis via the induction of fibrotic cytokine- chemokine (CC motif) ligand-2 (CCL2) expression. We previously reported that transcription factor nuclear factor-κB (NF-κB) is responsible for thrombin-induced CCL2 expression in human lung fibroblasts (HLFs). Here we extended our study to investigate the epigenetic regulation mechanism for thrombin-induced CCL2 expression in HLF. METHODS: HLFs were cultured in F-12 medium...
April 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28405903/stress-induced-alterations-of-immune-profile-in-animals-suffering-by-tau-protein-driven-neurodegeneration
#13
Petr Novak, Martin Cente, Nina Kosikova, Tomas Augustin, Richard Kvetnansky, Michal Novak, Peter Filipcik
Alzheimer's disease (AD) is a multifactorial disorder; neurofibrillary pathology composed of tau protein is found side by side with amyloid-β deposits and extensive neuroinflammation. The immune system of the brain is considered as one of the factors that could influence the speed of the progression of AD neuropathology as a potential mediator of the damage induced by AD protein deposits. Alzheimer's disease pathology can be impacted by psychological stress; however, signalling pathways in background are not well known...
April 12, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28405506/oral-delivery-of-tumor-microparticle-vaccines-activates-nod2-signaling-pathway-in-ileac-epithelium-rendering-potent-antitumor-t-cell-immunity
#14
Wenqian Dong, Huafeng Zhang, Xiaonan Yin, Yuying Liu, Degao Chen, Xiaoyu Liang, Xun Jin, Jiadi Lv, Jingwei Ma, Ke Tang, Zhuowei Hu, Xiaofeng Qin, Bo Huang
Exploiting gut mucosal immunity to design new antitumor vaccination strategy remains unexplored. Tumor cell-derived microparticles (T-MP) are natural biomaterials that are capable of delivering tumor antigens and innate signals to dendritic cells (DC) for tumor-specific T cell immunity. Here, we show that T-MPs by oral vaccination route effectively access and activate mucosal epithelium, leading to subsequent antitumor T cell responses. Oral vaccination of T-MPs generated potent inhibitory effect against the growth of B16 melanoma and CT26 colon cancer in mice, which required both T cell and DC activation...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28404856/a-dose-dependent-plasma-signature-of-the-safety-and-immunogenicity-of-the-rvsv-ebola-vaccine-in-europe-and-africa
#15
Angela Huttner, Christophe Combescure, Stéphane Grillet, Mariëlle C Haks, Edwin Quinten, Christine Modoux, Selidji Todagbe Agnandji, Jessica Brosnahan, Julie-Anne Dayer, Ali M Harandi, Laurent Kaiser, Donata Medaglini, Tom Monath, Pascale Roux-Lombard, Peter G Kremsner, Tom H M Ottenhoff, Claire-Anne Siegrist
The 2014-2015 Ebola epidemic affected several African countries, claiming more than 11,000 lives and leaving thousands with ongoing sequelae. Safe and effective vaccines could prevent or limit future outbreaks. The recombinant vesicular stomatitis virus-vectored Zaire Ebola (rVSV-ZEBOV) vaccine has shown marked immunogenicity and efficacy in humans but is reactogenic at higher doses. To understand its effects, we examined plasma samples from 115 healthy volunteers from Geneva who received low-dose (LD) or high-dose (HD) vaccine or placebo...
April 12, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28403399/the-role-of-microglia-in-the-pathobiology-of-neuropathic-pain-development-what-do-we-know
#16
H Zhao, A Alam, Q Chen, M A Eusman, A Pal, S Eguchi, L Wu, D Ma
Neuropathic pain, a maladaptive and chronic condition that can develop after a lesion or disease affecting the somatosensory system, is characterized by allodynia, hyperalgesia and spontaneous pain, and comorbidities such as sleep deprivation, depression and anxiety. The activation of microglial cells in response to nerve injury has been implicated in the development of neuropathic pain. Mediators such as Neuregulin-1, matrix metalloproteinase (MMP)-2, MMP-9, The chemokine (C-C motif) ligand 2 (CCL2) and fractalkine are released after nerve injury and are involved in the activation of microglial cells...
April 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28399485/interleukin-18-protects-mice-from-enterovirus-71-infection
#17
Zheng Li, Hongbin Wang, Yihui Chen, Junling Niu, Qiuhong Guo, Qibin Leng, Zhong Huang, Zhirui Deng, Guangxun Meng
Previous study has demonstrated that the NLRP3 inflammasome is essential for protecting murine host against Enterovirus 71 (EV71) infection. However, the underlying mechanism remained unknown. Here we discovered that the pleiotropic cytokine interleukin-18 (IL-18), an NLRP3 inflammasome-dependent effector protein, exhibits a protective capability against EV71 challenge. Deficiency of IL-18 in mice exacerbated EV71 infection, which was reflected by increased viral replication, elevated production of interferons (IFN-β, IFN-γ), proinflammatory cytokines (TNF-α, IL-6) and chemokine CCL2,as well as decreased survival of experimental animals...
April 8, 2017: Cytokine
https://www.readbyqxmd.com/read/28399156/presence-of-il-17-in-synovial-fluid-identifies-a-potential-inflammatory-osteoarthritic-phenotype
#18
Sarah J B Snelling, Sylvette Bas, Gabor J Puskas, Stephanie G Dakin, Domizio Suva, Axel Finckh, Cem Gabay, Pierre Hoffmeyer, Andrew J Carr, Anne Lübbeke
PURPOSE: Osteoarthritis (OA) is a common and heterogeneous arthritic disorder. Patients suffer pain and their joints are characterized by articular cartilage loss and osteophyte formation. Risk factors for OA include age and obesity with inflammation identified as a key mediator of disease pathogenesis. Interleukin-17A (IL-17) is a pro-inflammatory cytokine that has been implicated in inflammatory diseases such as rheumatoid arthritis. IL-17 can upregulate expression of inflammatory cytokines and adipocytokines...
2017: PloS One
https://www.readbyqxmd.com/read/28398880/cerebrovascular-remodeling-and-neuroinflammation-is-a-late-effect-of-radiation-induced-brain-injury-in-non-human-primates
#19
Rachel N Andrews, Linda J Metheny-Barlow, Ann M Peiffer, David B Hanbury, Janet A Tooze, J Daniel Bourland, Robert E Hampson, Samuel A Deadwyler, J Mark Cline
Fractionated whole-brain irradiation (fWBI) is a mainstay of treatment for patients with intracranial neoplasia; however late-delayed radiation-induced normal tissue injury remains a major adverse consequence of treatment, with deleterious effects on quality of life for affected patients. We hypothesize that cerebrovascular injury and remodeling after fWBI results in ischemic injury to dependent white matter, which contributes to the observed cognitive dysfunction. To evaluate molecular effectors of radiation-induced brain injury (RIBI), real-time quantitative polymerase chain reaction (RT-qPCR) was performed on the dorsolateral prefrontal cortex (DLPFC, Brodmann area 46), hippocampus and temporal white matter of 4 male Rhesus macaques (age 6-10 years), which had received 40 Gray (Gy) fWBI (8 fractions of 5 Gy each, twice per week), and 3 control comparators...
March 6, 2017: Radiation Research
https://www.readbyqxmd.com/read/28398003/midkine-in-the-mouse-ventral-tegmental-area-limits-ethanol-intake-and-ccl2-gene-expression
#20
Hu Chen, Donghong He, Amy W Lasek
Midkine (MDK) is a cytokine and neurotrophic factor that is more highly expressed in the brains of human alcoholics and in mice predisposed to drink large amounts of ethanol, suggesting that MDK may regulate ethanol consumption. Here we measured ethanol consumption in male and female Mdk knockout (-/-) mice using the two-bottle choice and the drinking in the dark (DID) tests. We found that Mdk -/- mice consumed significantly more ethanol than wild type controls in both tests. To determine if MDK acts in the ventral tegmental area (VTA) to regulate ethanol consumption, we delivered lentivirus expressing a Mdk shRNA into the VTA of male C57BL/6J mice to locally knockdown Mdk and performed the DID test...
April 11, 2017: Genes, Brain, and Behavior
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