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https://www.readbyqxmd.com/read/29338314/inflammatory-cytokines-in-the-papillary-tips-and-urine-of-nephrolithiasis-patients
#1
Andrew Yang Sun, Bryan Hinck, Benjamin R Cohen, Karen Keslar, Robert L Fairchild, Manoj Monga
INTRODUCTION: Intrarenal inflammation has been implicated in the pathogenesis of nephrolithiasis, with prior work showing increased urine levels of IL-6, IL-8, and CCL-2 in stone patients. However, no studies have assessed for inflammation in the renal papillae. We sought to characterize novel papillary tip and urinary biomarkers in stone patients. METHODS: 92 patients with nephrolithiasis undergoing percutaneous nephrolithotomy were enrolled. Papillary tip biopsies, kidney urine, and bladder urine were collected, as well as voided urine from 8 healthy volunteers...
January 16, 2018: Journal of Endourology
https://www.readbyqxmd.com/read/29337566/cationic-polymeric-nanoparticle-delivering-ccr2-sirna-to-inflammatory-monocytes-for-tumor-microenvironment-modification-and-cancer-therapy
#2
Song Shen, Yue Zhang, Kai-Ge Chen, Ying-Li Luo, Jun Wang
Accumulating evidence has confirmed that malignant tumors have a complex microenvironment, which consists of a heterogeneous collection of tumor cells and other cell subsets (including the full gamut of immune cells). Tumor-associated macrophages (TAMs), derived from circulating Ly6Chi monocytes, constitute the most substantial fraction of tumor-infiltrating immune cells in nearly all cancer types and contribute to tumor progression, vascularization, metastasis, immunosuppression and therapeutic resistance...
January 16, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29332538/role-of-infiltrating-monocytes-in-the-development-of-radiation-induced-pulmonary-fibrosis
#3
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/29319128/the-preliminary-study-on-expression-and-clinical-value-of-platelet-derived-growth-factor-bb-hypoxia-inducible-factor-1%C3%AE-and-c-c-motif-chemokine-receptor-2-in-the-peripheral-blood-during-the-pathogenesis-of-graves-disease
#4
Ying Liu, Jinglan Tang, Qiaohong Hu, Kefeng Lu, Chunjie Hou
Backgroud: Platelet-derived growth factor BB (PDGF-BB) plays an important role in the development of GD(Graves' disease). However, it is still unknown whether PDGF-BB is expressed in peripheral blood and whether the expression of PDGF-BB contributes to GD. We aim to study the expression of PDGF-BB, Hypoxia inducible factor(HIF)-1α and C-C motif chemokine receptor(CCR)-2 in peripheral blood of patients with GD and explore its effect and potential mechanism in pathogenesis. METHODS: 41 patients with GD (GD group) and 45 healthy people(control group) were chosen...
January 10, 2018: Endokrynologia Polska
https://www.readbyqxmd.com/read/29317510/the-f-box-protein-fbp1-shapes-the-immunogenic-potential-of-cryptococcus-neoformans
#5
Jorge Masso-Silva, Vanessa Espinosa, Tong-Bao Liu, Yina Wang, Chaoyang Xue, Amariliz Rivera
Cryptococcus neoformans is the main etiologic agent of cryptococcal meningitis and causes a significant number of deadly infections per year. Although it is well appreciated that host immune responses are crucial for defense against cryptococcosis, our understanding of factors that control the development of effective immunity to this fungus remains incomplete. In previous studies, we identified the F-box protein Fbp1 as a novel determinant of C. neoformans virulence. In this study, we found that the hypovirulence of the fbp1Δ mutant is linked to the development of a robust host immune response...
January 9, 2018: MBio
https://www.readbyqxmd.com/read/29306244/tnf-alpha-863c-a-promoter-and-tnfrii-196t-g-exonic-variationsmay-be-risk-factors-for-juvenile-idiopathic-arthritis
#6
Bahadır Batar, Sezen Özman, Kenan Barut, Özgür Kasapçopur, Mehmet Güven
Background/aim: Juvenile idiopathic arthritis (JIA) is a chronic complex autoimmune disease. Genetic and environmental factors increase the risk of JIA. It is accepted that alterations in immune system pathways play an important role in the pathogenesis of JIA. The aim of the study was to investigate the possible association between immune system regulatory gene polymorphisms and JIA in Turkish patients. Materials and methods: We analyzed eight polymorphisms, TNF-alpha-863 C > A, TNFRII 196 T > G, IL2-631 G > A, IL13-1112 C > T, CCR2 190 G > A, CCR5delta32, CTLA4-1661 A > G, and PTPN22 1858 C > T, in 76 patients with JIA and in 80 healthy controls, who were of a similar age and same sex...
December 19, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29304539/expression-and-cellular-localization-of-cxcr4-and-cxcl12-in-human-carotid-atherosclerotic-plaques
#7
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/29302619/protein-mimetic-and-anticancer-properties-of-monocyte-targeting-peptide-amphiphile-micelles
#8
Christopher Poon, Sampreeti Chowdhuri, Cheng-Hsiang Kuo, Yun Fang, Francis J Alenghat, Danielle Hyatt, Kian Kani, Mitchell E Gross, Eun Ji Chung
Monocyte chemoattractant protein-1 (MCP-1) stimulates the migration of monocytes to inflammatory sites, leading to the progression of many diseases. Recently, we described a monocyte-targeting peptide amphiphile micelle (MCP-1 PAM) incorporated with the chemokine receptor CCR2 binding motif of MCP-1, which has a high affinity for monocytes in atherosclerotic plaques. We further report here the biomimetic components of MCP-1 PAMs and the influence of the nanoparticle upon binding to monocytes. We report that MCP-1 PAMs have enhanced secondary structure compared to the MCP-1 peptide...
December 11, 2017: ACS Biomaterials Science & Engineering
https://www.readbyqxmd.com/read/29301830/activation-of-4-1bb-on-liver-myeloid-cells-triggers-hepatitis-via-an-interleukin-27-dependent-pathway
#9
Todd Bartkowiak, Ashvin R Jaiswal, Casey R Ager, Renee Chin, Chao-Hsien Chen, Pratha Budhani, Midan Ai, Matthew J Reilley, Manu M Sebastian, David S Hong, Michael A Curran
PURPOSE: Agonist antibodies targeting the T cell co-stimulatory receptor 4-1BB (CD137) are among the most effective immunotherapeutic agents across pre-clinical cancer models. In the clinic, however, development of these agents has been hampered by dose-limiting liver toxicity. Lack of knowledge of the mechanisms underlying this toxicity has limited the potential to separate 4-1BB agonist driven tumor immunity from hepatotoxicity. EXPERIMENTAL DESIGN: The capacity of 4-1BB agonist antibodies to induce liver toxicity was investigated in immunocompetent mice, with or without co-administration of checkpoint blockade, via 1) measurement of serum transaminase levels, 2) imaging of liver immune infiltrates, and 3) qualitative and quantitative assessment of liver myeloid and T cells via flow cytometry...
January 4, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29288710/hbp-induces-the-expression-of-monocyte-chemoattractant-protein-1-via-the-fak-pi3k-akt-and-p38-mapk-nf-%C3%AE%C2%BAb-pathways-in-vascular-endothelial-cells
#10
Mengling Chang, Feng Guo, Zengding Zhou, Xiaoqin Huang, Lei Yi, Yi Dou, Jingning Huan
Inflammation is characterized by early influx of polymorphonuclear neutrophils (PMNs), followed by a second wave of monocyte recruitment. PMNs mediate monocyte recruitment via their release of heparin binding protein (HBP), which activates CCR2 (CC-chemokine receptor 2) on monocytes. However, the pathways for such signal transmission remain unknown. Accumulating evidences have highlighted the importance of leukocyte-endothelial cell interactions in the initiation of inflammation. In this study, an interesting finding is that HBP enhances the secretion of monocyte chemotactic protein 1(MCP-1), ligand of CCR2, from a third party, the endothelial cells (ECs)...
December 27, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/29288352/sublethal-concentration-of-h2o2-enhances-the-protective-effect-of-mesenchymal-stem-cells-in-rat-model-of-spinal-cord-injury
#11
Asrin Rahimi, Iraj Amiri, Amaneh Mohammadi Roushandeh, Zoleikha Golipour Choshali, Zohreh Alizadeh, Tayebeh Artimani, Saeid Afshar, Sara Soleimani Asl
OBJECTIVE: To investigate the effect of H2O2 on the migration and antioxidant defense of mesenchymal stem cells (MSCs) and the neurotrophic effects of H2O2-treated MSCs on spinal cord injury (SCI). RESULTS: Sublethal concentrations of H2O2 decreased cell migration and expression of CXCR4 and CCR2 as well as Nrf2 expression in MSCs. In the second phase, transplantation of treated and untreated MSCs to SCI caused minor changes in locomotor dysfunction. There was a significantly difference between cell-treated and spinal cord injury groups in expression of BDNF (brain-derived neurotrophic factor)...
December 29, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/29284516/lack-of-socs3-increases-lps-induced-murine-acute-lung-injury-through-modulation-of-ly6c-macrophages
#12
Zhilong Jiang, Zhihong Chen, Liyang Li, Wenjun Zhou, Lei Zhu
BACKGROUND: SOCS3 (suppressor of cytokine signaling 3) is a negative regulator of JAK/STAT3 signaling pathway and participates in the regulation of lung inflammation in a mouse model with acute lung injury (ALI). However, it is not well understood how SOCS3 regulates lung inflammation in the ALI mouse model. METHOD: In the present study, we investigated the effects of SOCS3 on modulation of Ly6C(+) monocyte phenotypes in a mouse model with lipopolysaccharide (LPS)-induced ALI...
December 29, 2017: Respiratory Research
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
#13
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/29281833/nlrp3-controls-the-development-of-gastrointestinal-cd11b-dendritic-cells-in-the-steady-state-and-during-chronic-bacterial-infection
#14
Isabelle C Arnold, Xiaozhou Zhang, Sabine Urban, Mariela Artola-Borán, Markus G Manz, Karen M Ottemann, Anne Müller
The gastric lamina propria is largely uncharted immunological territory. Here we describe the evolution and composition of the gastric, small intestinal, and colonic lamina propria mononuclear phagocyte system during the steady state and infection with the gastric pathogen Helicobacter pylori. We show that monocytes, CX3CR1hi macrophages, and CD11b+ dendritic cells are recruited to the infected stomach in a CCR2-dependent manner. All three populations, but not BATF3-dependent CD103+ DCs, sample red fluorescent protein (RFP)+Helicobacter pylori (H...
December 26, 2017: Cell Reports
https://www.readbyqxmd.com/read/29281816/tumor-associated-macrophages-derived-from-circulating-inflammatory-monocytes-degrade-collagen-through-cellular-uptake
#15
Daniel Hargbøl Madsen, Henrik Jessen Jürgensen, Majken Storm Siersbæk, Dorota Ewa Kuczek, Loretta Grey Cloud, Shihui Liu, Niels Behrendt, Lars Grøntved, Roberto Weigert, Thomas Henrik Bugge
Physiologic turnover of interstitial collagen is mediated by a sequential pathway in which collagen is fragmented by pericellular collagenases, endocytosed by collagen receptors, and routed to lysosomes for degradation by cathepsins. Here, we use intravital microscopy to investigate if malignant tumors, which are characterized by high rates of extracellular matrix turnover, utilize a similar collagen degradation pathway. Tumors of epithelial, mesenchymal, or neural crest origin all display vigorous endocytic collagen degradation...
December 26, 2017: Cell Reports
https://www.readbyqxmd.com/read/29280303/dual-ccr2-5-antagonist-attenuates-obesity-induced-insulin-resistance-by-regulating-macrophage-recruitment-and-m1-m2-status
#16
Ji Hye Huh, Hong Min Kim, Eun Soo Lee, Mi Hye Kwon, Bo Ra Lee, Hyun-Jeong Ko, Choon Hee Chung
OBJECTIVE: Adipose tissue inflammation induced by macrophage infiltration through the C-C motif chemokine receptor (CCR) 2 or CCR5 pathway has a pivotal role in obesity-related disease and insulin resistance. Here, the effect of PF4178903, a dual CCR2/CCR5 antagonist, on obesity and insulin resistance was evaluated. METHODS: Forty male C57BL/6J mice were divided into four groups as follows: (1) regular diet (RD), (2) RD with PF4178903, (3) high-fat diet (HFD), and (4) HFD with PF4178903...
December 27, 2017: Obesity
https://www.readbyqxmd.com/read/29277337/a-brief-look-at-the-role-of-monocyte-chemoattractant-protein-1-ccl2-in-the-pathophysiology-of-psoriasis
#17
REVIEW
Shadi Behfar, Gholamhossein Hassanshahi, Alireza Nazari, Hossein Khorramdelazad
Psoriasis (PsO) is a chronic skin disorder resulting from the imbalanced interactionbetween infiltrating immune cells and keratinocytes. These immune cells, including monocytes, are able to mediate the immune responses in inflamed skin lesions. Chemokines are responsible for the recruitment of leukocytes to sites of inflammation. In patients with PsO, the keratinocytes are the main source of monocyte chemotactic protein 1 (MCP-1/CCL2), which is a CC chemokine. After CCL2 binds to the chemokine receptor CCR2, which mainly is expressed on the surface of monocytes, the monocytes differentiate into macrophages and migrate from the blood stream to sites of inflammation...
December 22, 2017: Cytokine
https://www.readbyqxmd.com/read/29258824/hypoxia-increased-rage-expression-regulates-chemotaxis-and-pro-inflammatory-cytokines-release-through-nuclear-translocation-of-nf-%C3%AE%C2%BA-b-and-hif1%C3%AE-in-thp-1%C3%A2-cells
#18
Wei Bai, Jing Zhou, Na Zhou, Qin Liu, Jian Cui, Wei Zou, Wei Zhang
The potential role of hypoxia in mediating the receptor for advanced glycation end products (RAGE) expression deserves to be confirmed. And the role of RAGE in hypoxia-induced chemotaxis and inflammation is still unclear. In present study, THP-1 cells were pretreated with siRNA to block HIF1α, NF-κ B, or RAGE, followed by exposed to hypoxia (combined with H2O2 or SNP), and then RAGE expression, nuclear translocation of HIF1α and NF-κ B, release of TNF-α and IL-1β, as well as expression of MCP-1 and CCR2 were measured...
December 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29251559/structural-refinement-and-prediction-of-potential-ccr2-antagonists-through-validated-multi-qsar-modeling-studies
#19
Sk Abdul Amin, Nilanjan Adhikari, Sandip Kumar Baidya, Shovanlal Gayen, Tarun Jha
Chemokines trigger numerous inflammatory responses and modulate the immune system. The interaction between monocyte chemoattractant protein-1 (MCP-1) and chemokine receptor 2 (CCR2) may be the cause of atherosclerosis, obesity and insulin resistance. However, CCR2 is also implicated in other inflammatory diseases such as rheumatoid arthritis, multiple sclerosis, asthma and neuropathic pain. Therefore, there is a paramount importance of designing potent and selective CCR2 antagonists despite a number of drug candidates failed in clinical trials...
December 18, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/29251315/hepatic-recruitment-of-cd11b-ly6c-inflammatory-monocytes-promotes-hepatic-ischemia-reperfusion-injury
#20
Peng Song, Junbin Zhang, Yunwei Zhang, Zhiping Shu, Peng Xu, Long He, Chao Yang, Jinxiang Zhang, Hui Wang, Yiqing Li, Qin Li
Monocytes infiltrate damaged liver tissue during noninfectious liver injury and often have dual roles, perpetuating inflammation and promoting resolution of inflammation and fibrosis. However, how monocyte subsets distribute and are differentially recruited in the liver remain unclear. In the current study, the subpopulations of infiltrating monocytes were examined following liver ischemia/reperfusion (I/R) injury in mice using flow cytometry. CD11b+Ly6C high (Ly6Chi) cells (inflammatory monocytes) and CD11b+Ly6C low cells (reparative monocytes) were recruited into the liver following I/R injury...
February 2018: International Journal of Molecular Medicine
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