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https://www.readbyqxmd.com/read/29332538/role-of-infiltrating-monocytes-in-the-development-of-radiation-induced-pulmonary-fibrosis
#1
Angela M Groves, Carl J Johnston, Jacqueline P Williams, Jacob N Finkelstein
Lung exposure to radiation induces an injury response that includes the release of cytokines and chemotactic mediators; these signals recruit immune cells to execute inflammatory and wound-healing processes. However, radiation alters the pulmonary microenvironment, dysregulating the immune responses and preventing a return to homeostasis. Importantly, dysregulation is observed as a chronic inflammation, which can progress into pneumonitis and promote pulmonary fibrosis; inflammatory monocytes, which are bone marrow derived and express CCR2, have been shown to migrate into the lung after radiation exposure...
January 13, 2018: Radiation Research
https://www.readbyqxmd.com/read/29332242/selective-ikk2-inhibitor-imd0354-disrupts-nf-%C3%AE%C2%BAb-signaling-to-suppress-corneal-inflammation-and-angiogenesis
#2
Anton Lennikov, Pierfrancesco Mirabelli, Anthony Mukwaya, Mira Schaupper, Muthukumar Thangavelu, Mieszko Lachota, Zaheer Ali, Lasse Jensen, Neil Lagali
Corneal neovascularization is a sight-threatening condition caused by angiogenesis in the normally avascular cornea. Neovascularization of the cornea is often associated with an inflammatory response, thus targeting VEGF-A alone yields only a limited efficacy. The NF-κB signaling pathway plays important roles in inflammation and angiogenesis. Here, we study consequences of the inhibition of NF-κB activation through selective blockade of the IKK complex IκB kinase β (IKK2) using the compound IMD0354, focusing on the effects of inflammation and pathological angiogenesis in the cornea...
January 13, 2018: Angiogenesis
https://www.readbyqxmd.com/read/29323192/baseline-il-2-and-the-aih-score-can-predict-the-response-to-standard-therapy-in-paediatric-autoimmune-hepatitis
#3
Jana Diestelhorst, Norman Junge, Danny Jonigk, Jerome Schlue, Christine S Falk, Michael P Manns, Ulrich Baumann, Elmar Jaeckel, Richard Taubert
Although autoimmune hepatitis (AIH) can be treated with corticosteroid-based first-line therapy, incomplete remission is associated with progressive liver fibrosis. So far accepted predictors of the subsequent treatment response of AIH patients are lacking. Therefore, we analysed baseline parameters, including iron homeostasis and cytokine levels, in 60 children with paediatric AIH (pAIH). In contrast to adults, elevated serum markers indicating iron overload were not commonly found in children. Therefore, ferritin was not predictive of the treatment response in pAIH...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29317531/melanocortin-overexpression-limits-diet-induced-inflammation-and-atherosclerosis-in-ldlr-mice
#4
Salla Nuutinen, Liisa Ailanen, Eriika Savontaus, Petteri Rinne
Atherosclerosis is a chronic inflammatory disease of the arteries. The disease is initiated by endothelial dysfunction that allows the transport of leukocytes and low-density lipoprotein into the vessel wall forming atherosclerotic plaques. The melanocortin system is an endogenous peptide system that regulates, for example, energy homeostasis and cardiovascular function. Melanocortin treatment with endogenous or synthetic melanocortin peptides reduces body weight, protects the endothelium and alleviates vascular inflammation, but the long-term effects of melanocortin system activation on atheroprogression remain largely unknown...
January 9, 2018: Journal of Endocrinology
https://www.readbyqxmd.com/read/29316680/effect-of-low-molecular-weight-oligopeptides-isolated-from-sea-cucumber-on-diabetic-wound-healing-in-db-db-mice
#5
Di Li, Lin Li, Teng Xu, Tianxing Wang, Jinwei Ren, Xinran Liu, Yong Li
Impaired wound healing is a major clinical problem in patients with diabetes and is the leading cause of lower limb amputation. This study is aimed to observe the effects of small molecule oligopeptides isolated from sea cucumber (SCCOPs) on the wound healing process in diabetic mice. Ninety db/db male mice were divided into five groups, including the model control group, whey protein group (0.50 g/kg) and three SCCOPs dose groups (0.25 g/kg, 0.50 g/kg and 1.00 g/kg). Additionally, 18 db/m male mice were used as normal control group...
January 8, 2018: Marine Drugs
https://www.readbyqxmd.com/read/29311626/lipopolysaccharide-and-lipotheicoic-acid-differentially-modulate-epididymal-cytokine-and-chemokine-profiles-and-sperm-parameters-in-experimental-acute-epididymitis
#6
Erick J R Silva, Camilla M Ribeiro, André F M Mirim, Alan A S Silva, Renata M Romano, Jorge Hallak, Maria Christina W Avellar
Bacterial infections are the most prevalent etiological factors of epididymitis, a commonly diagnosed inflammatory disease in the investigation of male infertility factors. The influence of early pathogenic mechanisms at play during bacterial epididymitis on reproductive outcomes is little understood. We report here that experimental epididymitis induced in rats by Gram-negative (LPS) and Gram-positive (LTA) bacterial products resulted in differential patterns of acute inflammation in the cauda epididymis. LPS elicited a strong inflammatory reaction, as reflected by upregulation of levels of mRNA for seven inflammatory mediators (Il1b, Tnf, Il6, Ifng, Il10, Nos2 and Nfkbia), and tissue concentration of six cytokines/chemokines (IL1A, IL1B, IL6, IL10, CXCL2 and CCL2) within the first 24 h post-treatment...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29305668/iloprost-affects-macrophage-activation-and-ccl2-concentrations-in-a-microdialysis-model-in-rats
#7
Kamel Alkhatib, Tina M Poseno, Alda Diaz Perez, Jeannine M Durdik, Julie A Stenken
PURPOSE: The hypothesis that locally-released iloprost, a synthetic prostacyclin analog, affects macrophage phenotype at a microdialysis implant in the subcutaneous space of rats was tested. Macrophage activation towards alternatively-activated phenotypes using pharmaceutical release is of interest to improve integration of implants and direct the foreign body reaction toward a successful outcome. METHODS: Macrophage cell culture was used to test iloprost macrophage activation in vitro...
January 5, 2018: Pharmaceutical Research
https://www.readbyqxmd.com/read/29304539/expression-and-cellular-localization-of-cxcr4-and-cxcl12-in-human-carotid-atherosclerotic-plaques
#8
Sophie Merckelbach, Emiel P C van der Vorst, Michael Kallmayer, Christoph Rischpler, Rainer Burgkart, Yvonne Döring, Gert-Jan de Borst, Markus Schwaiger, Hans-Henning Eckstein, Christian Weber, Jaroslav Pelisek
BACKGROUND AND AIMS:  The CXCR4/CXCL12 complex has already been associated with progression of atherosclerosis; however, its exact role is yet unknown. The aim of this study was to analyse the expression and cellular localization of CXCL12 and its receptor CXCR4 in human carotid atherosclerotic plaques. METHODS:  Carotid plaques (n = 58; 31 stable, 27 unstable, based on histological characterization of plaque morphology) were obtained during carotid endarterectomy, and 10 healthy vessels were used as a control...
January 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29304053/prior-exposure-to-corticosterone-markedly-enhances-and-prolongs-the-neuroinflammatory-response-to-systemic-challenge-with-lps
#9
Kimberly A Kelly, Lindsay T Michalovicz, Julie V Miller, Vincent Castranova, Diane B Miller, James P O'Callaghan
Systemic exposure to the inflammagen and bacterial endotoxin lipopolysaccharide (LPS) has been widely used to evaluate inflammation and sickness behavior. While many inflammatory conditions occur in the periphery, it is well established that peripheral inflammation can affect the brain. Neuroinflammation, the elaboration of proinflammatory mediators in the CNS, commonly is associated with behavioral symptoms (e.g., lethargy, anhedonia, anorexia, depression, etc.) termed sickness behavior. Stressors have been shown to interact with and alter neuroinflammatory responses and associated behaviors...
2018: PloS One
https://www.readbyqxmd.com/read/29301607/force-mediated-proinvasive-matrix-remodeling-driven-by-tumor-associated-mesenchymal-stem-like-cells-in-glioblastoma
#10
Eun-Jung Lim, Yongjoon Suh, Seungmo Kim, Seok-Gu Kang, Su-Jae Lee
In carcinoma, cancer-associated fibroblasts participate in force-mediated extracellular matrix (ECM) remodeling, consequently leading to invasion of cancer cells. Likewise, the ECM remodeling actively occurs in glioblastoma (GBM) and the consequent microenvironmental stiffness is strongly linked to migration behavior of GBM cells. However, in GBM the stromal cells responsible for force-mediated ECM remodeling remain unidentified. We show that tumor-associated mesenchymal stem-like cells (tMSLCs) provide a proinvasive matrix condition in GBM by force-mediated ECM remodeling...
January 5, 2018: BMB Reports
https://www.readbyqxmd.com/read/29301568/surfen-a-proteoglycan-binding-agent-reduces-inflammation-but-inhibits-remyelination-in-murine-models-of-multiple-sclerosis
#11
Jordan R Warford, Anna-Claire Lamport, Derek R Clements, Alicia Malone, Barry E Kennedy, Youra Kim, Shashi A Gujar, David W Hoskin, Alexander S Easton
Proteoglycans are promising therapeutic targets in Multiple Sclerosis (MS), because they regulate many aspects of the immune response. This was studied using surfen, an agent that binds both heparan sulphate proteoglycans (HSPGs) and chondroitin sulphate proteoglycans (CSPGs). Initial cell culture work on bone marrow derived macrophages (BMDMs) found that surfen reduced concentrations of the chemokines CCL2, CCL4 and CCL5, with reduced messenger (m)RNA expression for Tumor Necrosis Factor, IL-6, IL-1β and inducible nitric oxide synthase...
January 4, 2018: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/29297316/a-database-of-human-genes-and-a-gene-network-involved-in-response-to-tick-borne-encephalitis-virus-infection
#12
Elena V Ignatieva, Alexander V Igoshin, Nikolay S Yudin
BACKGROUND: Tick-borne encephalitis is caused by the neurotropic, positive-sense RNA virus, tick-borne encephalitis virus (TBEV). TBEV infection can lead to a variety of clinical manifestations ranging from slight fever to severe neurological illness. Very little is known about genetic factors predisposing to severe forms of disease caused by TBEV. The aims of the study were to compile a catalog of human genes involved in response to TBEV infection and to rank genes from the catalog based on the number of neighbors in the network of pairwise interactions involving these genes and TBEV RNA or proteins...
December 28, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/29295986/macrophages-orchestrate-breast-cancer-early-dissemination-and-metastasis
#13
Nina Linde, Maria Casanova-Acebes, Maria Soledad Sosa, Arthur Mortha, Adeeb Rahman, Eduardo Farias, Kathryn Harper, Ethan Tardio, Ivan Reyes Torres, Joan Jones, John Condeelis, Miriam Merad, Julio A Aguirre-Ghiso
Cancer cell dissemination during very early stages of breast cancer proceeds through poorly understood mechanisms. Here we show, in a mouse model of HER2+ breast cancer, that a previously described sub-population of early-evolved cancer cells requires macrophages for early dissemination. Depletion of macrophages specifically during pre-malignant stages reduces early dissemination and also results in reduced metastatic burden at end stages of cancer progression. Mechanistically, we show that, in pre-malignant lesions, CCL2 produced by cancer cells and myeloid cells attracts CD206+/Tie2+ macrophages and induces Wnt-1 upregulation that in turn downregulates E-cadherin junctions in the HER2+ early cancer cells...
January 2, 2018: Nature Communications
https://www.readbyqxmd.com/read/29295871/exosomal-ccl2-from-tubular-epithelial-cells-is-critical-for-albumin-induced-tubulointerstitial-inflammation
#14
Lin-Li Lv, Ye Feng, Yi Wen, Wei-Jun Wu, Hai-Feng Ni, Zuo-Lin Li, Le-Ting Zhou, Bin Wang, Jian-Dong Zhang, Steven D Crowley, Bi-Cheng Liu
Albuminuria is a key instigator of tubulointerstitial inflammation associated with CKD, but the mechanism through which filtered albumin propagates renal injury remains unclear. In this study, we explored the role in this process of exosome mRNA released from tubular epithelial cells (TECs). Compared with control mice, acute and chronic kidney injury models had more exosomes containing inflammatory cytokine mRNA, particularly the chemokine CCL2, in kidneys and urine. In vitro stimulation of TECs with BSA recapitulated this finding...
January 2, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29290100/circulating-levels-of-monocyte-chemoattractant-protein-1-as-a-potential-measure-of-biological-age-in-mice-and-frailty-in-humans
#15
Matthew J Yousefzadeh, Marissa J Schafer, Nicole Noren Hooten, Elizabeth J Atkinson, Michele K Evans, Darren J Baker, Ellen K Quarles, Paul D Robbins, Warren C Ladiges, Nathan K LeBrasseur, Laura J Niedernhofer
A serum biomarker of biological versus chronological age would have significant impact on clinical care. It could be used to identify individuals at risk of early-onset frailty or the multimorbidities associated with old age. It may also serve as a surrogate endpoint in clinical trials targeting mechanisms of aging. Here, we identified MCP-1/CCL2, a chemokine responsible for recruiting monocytes, as a potential biomarker of biological age. Circulating monocyte chemoattractant protein-1 (MCP-1) levels increased in an age-dependent manner in wild-type (WT) mice...
December 31, 2017: Aging Cell
https://www.readbyqxmd.com/read/29288667/chronic-sleep-disorder-induced-by-psychophysiological-stress-induces-glucose-intolerance-without-adipose-inflammation-in-mice
#16
Katsutaka Oishi, Sumika Ohyama, Sayaka Higo-Yamamoto
Sleep disturbances are associated with various metabolic diseases such as hypertension and diabetes. We had previously established a mouse model of a psychophysiological stress-induced chronic sleep disorder (CSD) characterized by disrupted circadian rhythms of wheel-running activity, core body temperature, and sleep-wake cycles. To evaluate the underlying mechanisms of metabolic disorders induced by CSD, we created mice with CSD for six weeks and fed them with a high-fat diet. Glucose intolerance with hyperglycemia resulted, although plasma insulin levels and body weight increases were identical between control and CSD mice...
December 28, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29288588/il-1%C3%AE-inhibits-proliferation-and-adipogenic-differentiation-of-human-adipose-derived-mesenchymal-stem-cells-through-nf-%C3%AE%C2%BAb-and-erk1-2-mediated-proinflammatory-cytokines
#17
Xuerong Sun, Tangbin Zou, Changqing Zuo, Mingmeng Zhang, Benyan Shi, Zhiwen Jiang, Hongjing Cui, Xiaoxin Liao, Xiaoyi Li, Yuelian Tang, Yusheng Liu, Xinguang Liu
Dysfunctional adipogenesis such as subcutaneous lipoatrophy is closely related to insulin resistance and metabolic disorders. Although the expression or release of the cytokine interleukin-1α(L-1α) is known to increase in adipose tissue in response to cell death, cell senescence, aging, or solar radiation, the regulatory role of IL-1α in adipogenesis has not been sufficiently investigated. To investigate the problem, we explored the effect of IL-1α on the proliferation and adipogenic differentiation of human adipose-derived mesenchymal stem cells (ADSCs) using cell counting, alamarBlue assay, oil O staining, Western blot, among others...
December 30, 2017: Cell Biology International
https://www.readbyqxmd.com/read/29285925/yeast-%C3%AE-glucan-suppresses-the-chronic-inflammation-and-improves-the-microenvironment-in-adipose-tissues-of-ob-ob-mice
#18
Yan Cao, Ying Sun, Siwei Zou, Bingchao Duan, Mengying Sun, Xiaojuan Xu
Inflammation in visceral adipose tissues (VATs) contributes to the pathology of diabetes. This study focused on the inflammatory regulation in VATs by a yeast β-1,3-glucan (BYG) orally administered to ob/ob mice. BYG decreased pro-inflammatory modulators of TNF-α, IL-6, IL-1β, CCL2, and SAA3, and increased anti-inflammatory factors of Azgp1 (2.53±0.02 fold change) at protein and/or mRNA levels (p<0.05). Remarkably, BYG decreased the degree of adipose tissue macrophages (ATMs) infiltration to 82.5±8...
December 29, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29282807/blocking-of-cytokines-signalling-attenuates-evoked-and-spontaneous-neuropathic-pain-behaviours-in-the-paclitaxel-rat-model-of-chemotherapy-induced-neuropathy
#19
S Al-Mazidi, M Alotaibi, T Nedjadi, A Chaudhary, M Alzoghaibi, L Djouhri
BACKGROUND: Chemotherapy-induced peripheral neuropathic pain (CIPNP) is a serious dose-limiting neurotoxic effect of cancer drug treatment. The underlying mechanism(s) of this debilitating condition, which lacks effective drug treatment, is incompletely understood. However, neural-immune interactions, involving increased expression and release of cytokines, are believed to be involved. Here, we examined, in the paclitaxel rat model of CIPNP, whether plasma levels of 24 cytokines/chemokines change after paclitaxel treatment, and whether blocking of signalling of some of those cytokines would reverse/attenuate behavioural signs of CIPNP...
December 27, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/29278679/cell-specific-expression-and-signal-transduction-of-c-c-motif-chemokine-ligand-2-and-atypical-chemokine-receptors-in-the-porcine-endometrium-during-early-pregnancy
#20
Whasun Lim, Hyocheol Bae, Fuller W Bazer, Gwonhwa Song
Chemokines and atypical chemokine receptors (ACKRs; also known as chemokine decoy receptors) play an important role in reproductive immunology by recruiting leukocytes during early pregnancy. The aim of this study was to determine the expression of C-C motif chemokine ligand 2 (CCL2) and ACKRs in the endometrium during estrous cycle and early pregnancy, and to investigate the functional effects of CCL2 on porcine uterine luminal epithelial (pLE) cells. Our results indicated that CCL2, ACKR1, ACKR3, and ACKR4 were strongly detected in the glandular and luminal epithelium of the endometrium during early pregnancy compared to that in non-pregnant pigs...
December 23, 2017: Developmental and Comparative Immunology
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