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https://www.readbyqxmd.com/read/28088611/lactobacillus-paracasei-modulates-lps-induced-inflammatory-cytokine-release-by-monocyte-macrophages-via-the-up-regulation-of-negative-regulators-of-nf-kappab-signaling-in-a-tlr2-dependent-manner
#1
Ke-Yi Sun, Dong-Hua Xu, Chao Xie, Susan Plummer, James Tang, Xiao Fan Yang, Xiao Hui Ji
The application of the probiotic lactobacillus is suggested in the treatment of some inflammatory diseases of intestines due to its potential ability to attenuate inflammation. However, the mechanism is not completely understood. In PBMCs, Lactobacillus paracasei (L. Paracasei) down-regulated the LPS-induced production of TNF-α and IL-6. Using a macrophage-like differentiated THP-1 cell line induced by PMA, we investigated the effect of L. paracasei on the production of pro-inflammatory cytokines by monocyte-macrophages...
January 12, 2017: Cytokine
https://www.readbyqxmd.com/read/28087669/the-role-of-the-p38-mnk-eif4e-signaling-axis-in-tnf-production-downstream-of-the-nod1-receptor
#2
Mikhail V Pashenkov, Lyudmila S Balyasova, Yulia A Dagil, Boris V Pinegin
Activation of nucleotide-binding oligomerization domain (NOD) 1 and NOD2 by muropeptides triggers a complex transcriptional program in innate immune cells. However, little is known about posttranscriptional regulation of NOD1- and NOD2-dependent responses. When stimulated with a prototypic NOD1 agonist, N-acetylglucosaminyl-N-acetylmuramyl-l-alanyl-d-isoglutamyl-meso-diaminopimelic acid (GM-triDAP), human monocyte-derived macrophages (MDM) produced an order of magnitude more TNF, IL-6, and pro-IL-1β than did monocyte-derived dendritic cells (MDDC), despite similar NOD1 expression, similar cytokine mRNA kinetics, and comparable responses to LPS...
January 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28087651/frontline-science-multiple-cathepsins-promote-inflammasome-independent-particle-induced-cell-death-during-nlrp3-dependent-il-1%C3%AE-activation
#3
Gregory M Orlowski, Shruti Sharma, Jeff D Colbert, Matthew Bogyo, Stephanie A Robertson, Hiroshi Kataoka, Francis K Chan, Kenneth L Rock
Sterile particles cause several chronic, inflammatory diseases, characterized by repeating cycles of particle phagocytosis and inflammatory cell death. Recent studies have proposed that these processes are driven by the NLRP3 inflammasome, a platform activated by phagocytosed particles, which controls both caspase-1-dependent cell death (pyroptosis) and mature IL-1β secretion. After phagocytosis, particles can disrupt lysosomes, and inhibitor studies have suggested that the resulting release of a lysosomal protease-cathepsin B-into the cytosol somehow activates NLRP3...
January 13, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28079503/novel-evidences-of-atypical-manifestations-in-cryopyrin-associated-periodic-syndromes
#4
Segundo Bujan-Rivas, Maria Basagaña, Francisca Sena, Maria Méndez, Maria Teresa Dordal, Eva Gonzalez-Roca, Estibaliz Ruiz-Ortiz, Anna Mensa-Vilaró, Susana Plaza, Consuelo Modesto, Josep Ordi-Ros, Jordi Yagüe, Ferrán Martínez-Valle, Juan Ignacio Aróstegui
OBJECTIVES: Cryopyrin-associated periodic syndromes (CAPS) usually start during infancy as an urticarial-like rash and a marked acute phase response, with additional manifestations appearing during its evolution. The aim of this study was to expand the clinical diversity of CAPS by the description of novel atypical features. METHODS: Clinical data were collected from patients' medical charts. Sanger sequencing analyzed NLRP3. Response to anti-IL-1 blockade was evaluated by clinical assessments and by measurements of laboratory parameters...
January 9, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28078840/mast-cell-and-cancer-with-special-emphasis-on-il-37-an-anti-inflammatory-and-inhibitor-of-innate-immunity-new-frontiers
#5
F Carinci, G Lessiani, E Spinas, S K Kritas, G Ronconi, Al Caraffa, P Conti
Mast cells (MCs) are mediators of allergy and inflammation and participate in the growth of cancer cells. MCs can promote both neoangiogenesis and tumor growth. They increase in the stroma of certain tumors where they can be recruited by tumor-derived chemoattractants, such as monocyte chemotactic protein-1 (MCP-1), RANTES and stem cell factor (SCF) to selectively secrete inflammatory molecules including chemical mediators and cytokines (TNF, IL-6 and IL-1). However, MC differentiation pathways and heterogeneity in cancer are still poorly understood...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28078079/looking-forward-to-new-targeted-treatments-for-chronic-spontaneous-urticaria
#6
REVIEW
Emek Kocatürk, Marcus Maurer, Martin Metz, Clive Grattan
The introduction of omalizumab to the management of chronic spontaneous urticaria (CSU) has markedly improved the therapeutic possibilities for both, patients and physicians dealing with this disabling disease. But there is still a hard core of patients who do not tolerate or benefit from existing therapies and who require effective treatment. Novel approaches include the use of currently available drugs off-licence, investigational drugs currently undergoing clinical trials and exploring the potential for therapies directed at pathophysiological targets in CSU...
2017: Clinical and Translational Allergy
https://www.readbyqxmd.com/read/28076390/il-37-confers-protection-against-mycobacterial-infection-involving-suppressing-inflammation-and-modulating-t-cell-activation
#7
Haipeng Liu, Ruijuan Zheng, Peng Wang, Hua Yang, Xin He, Qun Ji, Wenjuan Bai, Hao Chen, Jianxia Chen, Wenxia Peng, Siyu Liu, Zhonghua Liu, Baoxue Ge
Interleukin-37 (IL-37), a novel member of the IL-1 family, plays fundamental immunosuppressive roles by broadly reducing both innate inflammation and acquired immunity, but whether it is involved in the pathogenesis of tuberculosis (TB) has not been clearly elucidated. In this study, single nucleotide polymorphism (SNP) analysis demonstrated an association of the genetic variant rs3811047 of IL-37 with TB susceptibility. In line with previous report, a significant elevated IL-37 abundance in the sera and increased expression of IL-37 protein in the peripheral blood mononuclear cells (PBMC) were observed in TB patients in comparison to healthy controls...
2017: PloS One
https://www.readbyqxmd.com/read/28072632/asc-methylation-and-interleukin-1%C3%AE-are-associated-with-aerobic-capacity-in-heart-failure
#8
Brittany Butts, Javed Butler, Sandra B Dunbar, Elizabeth Corwin, Rebecca A Gary
BACKGROUND: Aerobic capacity, as measured by peak oxygen uptake (V[Combining Dot Above]O2), is one of the most powerful predictors of prognosis in heart failure (HF). Inflammation is a key factor contributing to alterations in aerobic capacity, and interleukin (IL)-1 cytokines are implicated in this process. The adaptor protein ASC is necessary for inflammasome activation of IL-1β and IL-18. ASC expression is controlled through epigenetic modification; lower ASC methylation is associated with worse outcomes in HF...
January 9, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28072466/chronic-pain-and-impaired-glial-glutamate-transporter-function-in-lupus-prone-mice-are-ameliorated-by-blocking-csf-1-receptors
#9
Xisheng Yan, Dylan W Maixner, Fen Li, Han-Rong Weng
Systemic lupus erythematosus (SLE) is a multi-organ disease of unknown etiology in which the normal immune responses are directed against the body's own healthy tissues. Patients with SLE often suffer from chronic pain. Currently, no animal studies have been reported about the mechanisms underlying pain in SLE. In this study, the development of chronic pain in MRL lupus-prone (MRL/lpr) mice, a well-established lupus mouse model, was characterized for the first time. We found that female MRL/lpr mice developed thermal hyperalgesia at the age of 13 weeks, and mechanical allodynia at the age of 16 weeks...
January 10, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28071984/particulate-matter-mediated-release-of-long-pentraxin-3-ptx3-and-vascular-endothelial-growth-factor-vegf-in-vitro-limited-importance-of-endotoxin-and-organic-content
#10
J I Herseth, V Volden, A K Bolling
Exposure to particulate matter (PM) is associated with adverse health effects, but it is still relatively unknown which role PM sources and physicochemical properties play in the observed effects. It was postulated that PM in vitro induces release of long pentraxin 3 (PTX3) and vascular endothelial growth factor (VEGF) and that endotoxin and organic compounds present in the PM regulate this release. A contact coculture of THP-1 human leukemia monocytes and A549 human adenocarcinoma alveolar pneumocytes was exposed to PM from Traffic, Wood, Diesel, and Quartz (10-40 µg/cm(2)) for 12-64 h to determine release of PTX3 and VEGF...
January 10, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28069520/conditioned-medium-from-persistently-rsv-infected-macrophages-alters-transcriptional-profile-and-inflammatory-response-of-non-infected-macrophages
#11
Evelyn Rivera-Toledo, Iván Salido-Guadarrama, Mauricio Rodríguez-Dorantes, Laura Torres-González, Carlos Santiago-Olivares, Beatriz Gómez
Cells susceptible to persistent viral infections undergo important changes in their biological functions as a consequence of the expression of viral gene products that are capable of altering the gene expression profile of the host cell. Previously, we reported that persistence of the RSV genome in a mouse macrophage cell line induces important alterations in cell homeostasis, including constitutive expression of IFN-β and other pro-inflammatory cytokines. Here, we postulated that changes in the homeostasis of non-infected macrophages could be induced by soluble factors secreted by persistently RSV- infected macrophages...
January 6, 2017: Virus Research
https://www.readbyqxmd.com/read/28068541/double-regulation-of-bismuth-and-halogen-source-for-the-preparation-of-bismuth-oxybromide-nanosquares-with-enhanced-photocatalytic-activity
#12
Yiling Liu, Jun Di, Mengxia Ji, Kaizhi Gu, Sheng Yin, Weibin Li, Jiexiang Xia, Huaming Li
In this paper, bismuth oxybromide (BiOBr) nanosquares photocatalysts were synthesized via a facile hydrothermal method with the double regulation of the ionic liquid (IL) 1-hexadecyl-3-methylimidazolium bromide and ammonium bismuth citrate (BCA). To the best of our knowledge, this report is the first to describe the BiOBr material with simultaneous bismuth and halogen bidirectional source regulation. The structures, components, morphologies, optical properties and photocatalytic properties of the as-prepared samples were specifically explored...
December 18, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28067223/the-microbiota-maintain-homeostasis-of-liver-resident-%C3%AE-%C3%AE-t-17-cells-in-a-lipid-antigen-cd1d-dependent-manner
#13
Fenglei Li, Xiaolei Hao, Yongyan Chen, Li Bai, Xiang Gao, Zhexiong Lian, Haiming Wei, Rui Sun, Zhigang Tian
The microbiota control regional immunity using mechanisms such as inducing IL-17A-producing γδ T (γδT-17) cells in various tissues. However, little is known regarding hepatic γδT cells that are constantly stimulated by gut commensal microbes. Here we show hepatic γδT cells are liver-resident cells and predominant producers of IL-17A. The microbiota sustain hepatic γδT-17 cell homeostasis, including activation, survival and proliferation. The global commensal quantity affects the number of liver-resident γδT-17 cells; indeed, E...
January 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28067111/extremely-low-level-microwaves-attenuate-immune-imbalance-induced-by-inhalation-exposure-to-low-level-toluene-in-mice
#14
Elena G Novoselova, Olga V Glushkova, Maxim O Khrenov, Tatyana V Novoselova, Sergey M Lunin, Eugeny E Fesenko
PURPOSE: To clarify whether extremely low-level microwaves (MW) alone or in combination with p38 inhibitor affect immune cell responses to inhalation exposure of mice to low-level toluene. MATERIALS AND METHODS: The cytokine profile, heat shock proteins expression, and the activity of several signal cascades, namely, NF-κB, SAPK/JNK, IRF-3, p38 MAPK, and TLR4 were measured in spleen lymphocytes of mice treated to air-delivered toluene (0.6 mg/m(3)) or extremely low-level microwaves (8...
January 9, 2017: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/28064547/a-systematic-approach-to-autoinflammatory-syndromes-a-spelling-booklet-for-the-beginner
#15
Donato Rigante
Hallmark of autoinflammatory syndromes (AIS) is the periodic recurrence of "sterile" inflammatory attacks characterized by fever and organ- or tissue-specific inflammation. Basic research projects over the last two decades have boosted our understanding of pathological pathways, mainly involving interleukin (IL)-1 biosynthesis, and also revealed that their dysregulation results from genetically-heterogeneous inborn errors of innate immunity and leads to multiple inflammatory phenotypes. Starting from the evidence of poor response to IL-1 inhibitors of some patients with multi-organ inflammation, further research studies have disclosed a crucial role for nuclear factor (NF)-κB and type I interferon (IFN) in specific AIS...
January 9, 2017: Expert Review of Clinical Immunology
https://www.readbyqxmd.com/read/28063227/lipus-suppressed-lps-induced-il-1%C3%AE-through-the-inhibition-of-nf-%C3%AE%C2%BAb-nuclear-translocation-via-at1-plc%C3%AE-pathway-in-mc3t3-e1
#16
Mayu Nagao, Natsuko Tanabe, Soichiro Manaka, Masako Naito, Kumiko Nakai, Tadahiro Takayama, Takayuki Kawato, Go Torigoe, Jumpei Sekino, Naoya Tsukune, Masao Maeno, Naoto Suzuki, Shuichi Sato
Inflammatory cytokines, interleukin (IL)-1, IL-6, and TNF-a, are involved in inflammatory bone diseases such as rheumatoid osteoarthritis and periodontal disease. Particularly, periodontal disease, which destroys alveolar bone, is stimulated by lipopolysaccharide (LPS). Low-intensity pulsed ultrasound (LIPUS) is used for bone healing in orthopedics and dental treatments. However,the mechanism underlying effects of LIPUS on LPS-induced inflammatory cytokine are not well understood. We therefore aimed to investigate the role of LIPUS on LPS-induced IL-1a production...
January 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28061755/high-serum-resistin-associates-with-intrahepatic-inflammation-and-necrosis-an-index-of-disease-severity-for-patients-with-chronic-hbv-infection
#17
Zhongji Meng, Yonghong Zhang, Zhiqiang Wei, Ping Liu, Jian Kang, Yinhua Zhang, Deqiang Ma, Changzheng Ke, Yue Chen, Jie Luo, Zuojiong Gong
BACKGROUND: Studies have revealed that resistin plays a role as an intrahepatic cytokine with proinflammatory activities. This study investigated the association between serum resistin and fibrosis severity and the possible marker role of resistin in the inflammatory process of chronic hepatitis B. METHODS: In this study, 234 subjects with HBV infection were retrospectively selected, including 85 patients with chronic hepatitis B (CHB), 70 patients with HBV-related liver cirrhosis (LC-B), and 79 patients with HBV-related liver failure (LF-B)...
January 7, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28060943/farnesoid-x-receptor-activation-attenuates-intestinal-ischemia-reperfusion-injury-in-rats
#18
Laurens J Ceulemans, Len Verbeke, Jean-Paul Decuypere, Ricard Farré, Gert De Hertogh, Kaatje Lenaerts, Ina Jochmans, Diethard Monbaliu, Frederik Nevens, Jan Tack, Wim Laleman, Jacques Pirenne
INTRODUCTION: The farnesoid X receptor (FXR) is abundantly expressed in the ileum, where it exerts an enteroprotective role as a key regulator of intestinal innate immunity and homeostasis, as shown in pre-clinical models of inflammatory bowel disease. Since intestinal ischemia reperfusion injury (IRI) is characterized by hyperpermeability, bacterial translocation and inflammation, we aimed to investigate, for the first time, if the FXR-agonist obeticholic acid (OCA) could attenuate intestinal ischemia reperfusion injury...
2017: PloS One
https://www.readbyqxmd.com/read/28060792/expression-of-x-linked-toll-like-receptor-4-signalling-genes-in-female-versus-male-neonates
#19
David N O'Driscoll, Chiara DeSanti, Paul J McKiernan, Victoria McEneaney, Eleanor J Molloy, Catherine M Greene
BACKGROUND: Male neonates display poorer disease prognosis and outcomes compared to females. Immune genes which exhibit higher expression in umbilical cord blood (UCB) of females may contribute to the female immune advantage during infection and inflammation. The aim of this study was to quantify expression of Toll-like receptor (TLR) 4 signalling genes encoded on the X-chromosome in UCB from term female versus male neonates. METHODS: UCB samples were collected from term neonates (n=26) born by elective Caesarean section and whole blood was collected from adults (n=20)...
January 6, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28059859/pro-inflammatory-cytokines-mediate-gpcr-dysfunction
#20
Maradumane L Mohan, Neelakantan T Vasudevan, Sathyamangla V Naga Prasad
Pro-inflammatory reaction by the body occurs acutely in response to injury that is considered primarily beneficial. However, sustained pro-inflammatory cytokines observed with chronic pathologies such as metabolic syndrome, cancer, and arthritis are detrimental and in many cases is a major cardio-vascular risk factor. Pro-inflammatory cytokines such as interleulin-1 (IL-1), IL-6, and tumor necrosis factor α (TNFα) have long been implicated in cardiovascular risk and considered to be a major underlying cause for heart failure...
December 24, 2016: Journal of Cardiovascular Pharmacology
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