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Cytokine release

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https://www.readbyqxmd.com/read/27926586/hypercapnic-conditions-after-experimental-blunt-chest-trauma-increase-efferocytosis-of-alveolar-macrophages-and-reduce-local-inflammation
#1
Annette Palmer, Michael S J Eichner, Anne Rittlinger, Daniel H Seitz, Florian Gebhard, Markus S Huber-Lang, Ulrike Niesler
Blunt chest trauma induces severe local and systemic inflammatory alterations and an accumulation of apoptotic polymorphonuclear granulocytes (aPMN) in the lungs, frequently followed by bacterial infection. Alveolar macrophages (AM) represent one of the main actors for their clearance. However, little is known regarding regulatory and influencing factors of AM efferocytic and phagocytic activities. In this context, we investigated the influence of impaired gas exchange on AM activity.Male rats underwent blunt chest trauma or sham procedure and aPMN or E...
December 6, 2016: Shock
https://www.readbyqxmd.com/read/27925208/extracellular-hsp70-enhances-mesoangioblast-migration-via-an-autocrine-signaling-pathway
#2
Maria M Barreca, Walter Spinello, Vincenzo Cavalieri, Giuseppina Turturici, Gabriella Sconzo, Punit Kaur, Rosaria Tinnirello, Alexzander A A Asea, Fabiana Geraci
Mouse mesoangioblasts are vessel-associated progenitor stem cells endowed with the ability of multipotent mesoderm differentiation. Therefore, they represent a promising tool in the regeneration of injured tissues. Several studies have demonstrated that homing of mesoangioblasts into blood and injured tissues are mainly controlled by cytokines/chemokines and other inflammatory factors. However, little is known about the molecular mechanisms regulating their ability to traverse the extracellular matrix (ECM)...
December 7, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27924359/effects-of-4-methylumbelliferone-and-high-molecular-weight-hyaluronic-acid-on-the-inflammation-of-corneal-stromal-cells-induced-by-lps
#3
Fang Li, Peng Hao, Guangjie Liu, Weiyi Wang, Ruifang Han, Zhixin Jiang, Xuan Li
PURPOSE: To investigate the effects of hyaluronic acid (HA) on the inflammation of corneal fibroblasts induced by lipopolysaccharide (LPS). METHODS: Primary rabbit corneal keratocytes were isolated with collagenase. The keratocytes were cultured in a serum-containing medium to induce corneal fibroblasts, which represented the wound repair phenotype of corneal keratocytes. Corneal fibroblasts were treated with LPS with or without 4-methylumbelliferone (4-MU) / high molecular weight hyaluronic acid (HMWHA)...
December 6, 2016: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/27924137/exercise-induced-stress-behavior-gut-microbiota-brain-axis-and-diet-a-systematic-review-for-athletes
#4
REVIEW
Allison Clark, Núria Mach
Fatigue, mood disturbances, under performance and gastrointestinal distress are common among athletes during training and competition. The psychosocial and physical demands during intense exercise can initiate a stress response activating the sympathetic-adrenomedullary and hypothalamus-pituitary-adrenal (HPA) axes, resulting in the release of stress and catabolic hormones, inflammatory cytokines and microbial molecules. The gut is home to trillions of microorganisms that have fundamental roles in many aspects of human biology, including metabolism, endocrine, neuronal and immune function...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/27924062/chenodeoxycholic-acid-activates-nlrp3-inflammasome-and-contributes-to-cholestatic-liver-fibrosis
#5
Zizhen Gong, Jiefei Zhou, Shengnan Zhao, Chunyan Tian, Panliang Wang, Congfeng Xu, Yingwei Chen, Wei Cai, Jin Wu
Accumulation of hydrophobic bile acids in the liver contributes to cholestatic liver injury. Inflammation induced by excessive bile acids is believed to play a crucial role, however, the mechanisms of bile acids triggered inflammatory response remain unclear. Recent studies have highlighted the effect of NLRP3 inflammasome in mediating liver inflammation and fibrosis. In this study, we for the first time showed that chenodeoxycholic acid (CDCA), the major hydrophobic primary bile acid involved in cholestatic liver injury, could dose-dependently induce NLRP3 inflammasome activation and secretion of pro-inflammatory cytokine-IL-1β in macrophages by promoting ROS production and K+ efflux...
December 4, 2016: Oncotarget
https://www.readbyqxmd.com/read/27923601/understanding-the-molecular-mechanisms-of-nets-and-their-role-in-antiviral-innate-immunity
#6
REVIEW
Juan Manuel Agraz-Cibrian, Diana M Giraldo, Fafutis-Morris Mary, Silvio Urcuqui-Inchima
Polymorphonuclear neutrophils (PMNs) are the most abundant cells in the context of innate immunity; they are one of the first cells to arrive at the site of viral infection constituting the first line of defense in response to invading pathogens. Indeed, neutrophils are provided with several defense mechanisms including release of cytokines, cytotoxic granules and the last recently described neutrophil extracellular traps (NETs). The main components of NETs are DNA, granular antimicrobial peptides, and nuclear and cytoplasmic proteins, that together play an important role in the innate immune response...
December 3, 2016: Virus Research
https://www.readbyqxmd.com/read/27923071/c-type-lectin-mincle-recognizes-glucosyl-diacylglycerol-of-streptococcus-pneumoniae-and-plays-a-protective-role-in-pneumococcal-pneumonia
#7
Friederike Behler-Janbeck, Tomotsugu Takano, Regina Maus, Jennifer Stolper, Danny Jonigk, Meritxell Tort Tarrés, Thomas Fuehner, Antje Prasse, Tobias Welte, Mattie S M Timmer, Bridget L Stocker, Yoichi Nakanishi, Tomofumi Miyamoto, Sho Yamasaki, Ulrich A Maus
Among various innate immune receptor families, the role of C-type lectin receptors (CLRs) in lung protective immunity against Streptococcus pneumoniae (S. pneumoniae) is not fully defined. We here show that Mincle gene expression was induced in alveolar macrophages and neutrophils in bronchoalveolar lavage fluids of mice and patients with pneumococcal pneumonia. Moreover, S. pneumoniae directly triggered Mincle reporter cell activation in vitro via its glycolipid glucosyl-diacylglycerol (Glc-DAG), which was identified as the ligand recognized by Mincle...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27920546/chronotherapy-with-low-dose-modified-release-prednisone-for-the-management-of-rheumatoid-arthritis-a-review
#8
REVIEW
Stefano Paolo Beltrametti, Aurora Ianniello, Clara Ricci
To date, rheumatoid arthritis (RA) remains a debilitating, life-threatening disease. One major concern is morning symptoms (MS), as they considerably impair the patients' quality of life and ability to work. MS change in a circadian fashion, resembling the fluctuations of inflammatory cytokines such as interleukin-6, whose levels are higher in RA patients compared to healthy donors. Conversely, serum levels of the potent anti-inflammatory glucocorticoid cortisol are similar to that of healthy subjects, suggesting an imbalance that sustains a pro-inflammatory state...
2016: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/27920495/card9-as-a-potential-target-in-cardiovascular-disease
#9
REVIEW
Matthew R Peterson, Samantha E Haller, Jun Ren, Sreejayan Nair, Guanglong He
Systemic inflammation and localized macrophage infiltration have been implicated in cardiovascular pathologies, including coronary artery disease, carotid atherosclerosis, heart failure, obesity-associated heart dysfunction, and cardiac fibrosis. Inflammation induces macrophage infiltration and activation and release of cytokines and chemokines, causing tissue dysfunction by instigating a positive feedback loop that further propagates inflammation. Cytosolic adaptor caspase recruitment domain family, member 9 (CARD9) is a protein expressed primarily by dendritic cells, neutrophils, and macrophages, in which it mediates cytokine secretion...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27919737/histone-deacetylases-3-deletion-restrains-pm2-5-induced-mice-lung-injury-by-regulating-nf-%C3%AE%C2%BAb-and-tgf-%C3%AE-smad2-3-signaling-pathways
#10
Li-Zhi Gu, Hong Sun, Jian-Hui Chen
Acute lung injury (ALI) as a serious disease with high mortality has been emphasized as a threat to human health and life. Accumulating studies demonstrated that PM2.5 plays a significant role in metabolic and lung diseases. Histone deacetylases 3 (HDAC3) is an important regulator in control of gene transcription, required in up-regulation of inflammation-related signaling, and has been known as a key hotpot in treating a lot of chronic inflammatory diseases. TGF-β/Smad signaling pathway has been proven to be of significance in fibrosis development...
December 2, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27919735/quercetin-attenuates-high-fructose-feeding-induced-atherosclerosis-by-suppressing-inflammation-and-apoptosis-via-ros-regulated-pi3k-akt-signaling-pathway
#11
Xue-Li Lu, Cui-Hua Zhao, Xin-Liang Yao, Han Zhang
Quercetin is a dietary flavonoid compound extracted from various plants, such as apple and onions. Previous studies have revealed its anti-inflammatory, anti-cancer, antioxidant and anti-apoptotic activities. This study investigated the ability of quercetin to inhibit high fructose feeding- or LPS-induced atherosclerosis through regulating oxidative stress, apoptosis and inflammation response in vivo and in vitro experiments. 50 and 100mg/kg quercetin were used in our study, showing significant inhibitory role in high fructose-induced atherosclerosis via reducing reactive oxygen species (ROS) levels, Caspase-3 activation, inflammatory cytokines releasing, the number of terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL)-positive cells and collagen contents as well as modulating apoptosis- and inflammation-related proteins expression...
December 2, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27919184/role-of-engineered-metal-oxide-nanoparticle-agglomeration-in-reactive-oxygen-species-generation-and-cathepsin-b-release-in-nlrp3-inflammasome-activation-and-pulmonary-toxicity
#12
Tina M Sager, Michael Wolfarth, Stephen S Leonard, Anna M Morris, Dale W Porter, Vincent Castranova, Andrij Holian
Incomplete understanding of the contributions of dispersants and engineered nanoparticles/materials (ENM) agglomeration state to biological outcomes presents an obstacle for toxicological studies. Although reactive oxygen species (ROS) production is often regarded as the primary indicator of ENM bioactivity and toxicity, it remains unclear whether ENM produce ROS or whether ROS is an outcome of ENM-induced cell injury. Phagolysosomal disruption and cathepsin B release also promote bioactivity through inflammasome activation...
December 5, 2016: Inhalation Toxicology
https://www.readbyqxmd.com/read/27918955/defective-production-of-interleukin-1-beta-in-patients-with-type-2-diabetes-mellitus-restoration-by-proper-glycemic-control
#13
Foteini Kousathana, Marianna Georgitsi, Vaia Lambadiari, Evangelos J Giamarellos-Bourboulis, George Dimitriadis, Maria Mouktaroudi
The underlying immune defect of susceptibility in diabetes mellitus type 2 to infections remains unknown. The qualitative changes in cytokine biosynthesis by circulating mononuclear cells (PBMCs) and its modulation by glycemic control were investigated. PBMCs were isolated from 39 patients and 25 controls. They were stimulated with purified ligands and heat-killed bacteria in the absence/presence of glucose and NLPR3 inflammasome ligands. Experiments were repeated after 3 and 6months. Cytokine production was measured in cell supernatants; pro-interleukin(IL)-1 β was measured in cell lysates...
December 2, 2016: Cytokine
https://www.readbyqxmd.com/read/27917624/relationships-between-high-mobility-group-protein-b1-and-triggering-receptor-expressed-on-myeloid-cells-concentrations-in-gingival-crevicular-fluid-and-chronic-periodontitis
#14
Mojgan Paknejad, Mandana Sattari, Zohreh Roozbahani, Morteza Ershadi, Ali Mehrfard
One of the inflammatory mediators which is secreted by inflammatory cells is high-mobility group protein B1 (HMGB1). Interaction of HMGB1 and toll-like receptors (TLRs) leads to increased production of inflammatory cytokines. On the other hand, it was shown that triggering receptor expressed on myeloid cells (TREM-1) also can be activated by TLRs, and its soluble form (sTREM-1) can be formed by cleaving of membrane-bound form of TREM-1 proteinases. Since there is not enough knowledge about the precise role of HMGB1 and sTREM-1 in periodontal diseases, the aim of this study was to evaluate the concentration of HMGB1 and sTREM-1 in gingival crevicular fluid (GCF) samples of patients with chronic periodontitis...
October 2016: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/27917620/normothermic-ex-vivo-lung-perfusion-in-brain-dead-donors-reduces-inflammatory-cytokines-and-toll-like-receptor-expression
#15
Shadi Shafaghi, Esmaeil Mortaz, Azizollah Abbasi Dezfuli, Hoda Godarzi, Kambiz Sheikhy, Zahra Ansari Aval, Behrooz Farzanegan, Habib Emami, Fatemeh Sadat Hosseini-Baharanchi, Katayoun Najafizadeh
Inflammatory responses and innate immunologic reactions play an important role in the respiratory system. Ex vivo lung perfusion (EVLP) is considered a novel method in the evaluation and reconditioning of donor lungs prior to transplantation. However, EVLP's effect on inflammatory and metabolic markers of human lung tissue is unknown.  This study investigated how the performance of EVLP on brain-dead (BD) donor lungs affects the production and release of inflammatory cytokines (IL-6, IL-8, and TNF-a), inflammatory cells and toll-like receptors (TLR) -2, 4...
October 2016: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/27916909/dysregulated-homeostasis-of-acetylcholine-levels-in-immune-cells-of-rr-multiple-sclerosis-patients
#16
Maria Di Bari, Marcella Reale, Marta Di Nicola, Viviana Orlando, Sabrina Galizia, Italo Porfilio, Erica Costantini, Chiara D'Angelo, Serena Ruggieri, Stefano Biagioni, Claudio Gasperini, Ada Maria Tata
Multiple sclerosis (MS) is characterized by pro-inflammatory cytokine production. Acetylcholine (ACh) contributes to the modulation of central and peripheral inflammation. We studied the homeostasis of the cholinergic system in relation to cytokine levels in immune cells and sera of relapsing remitting-MS (RR-MS) patients. We demonstrated that lower ACh levels in serum of RR-MS patients were inversely correlated with the increased activity of the hydrolyzing enzymes acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE)...
November 30, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27916652/exploring-pericyte-and-cardiac-stem-cell-secretome-unveils-new-tactics-for-drug-discovery
#17
REVIEW
Georgina M Ellison-Hughes, Paolo Madeddu
Ischaemic diseases remain a major cause of morbidity and mortality despite continuous advancements in medical and interventional treatments. Moreover, available drugs reduce symptoms associated with tissue ischaemia, without providing a definitive repair. Cardiovascular regenerative medicine is an expanding field of research that aims to improve the treatment of ischaemic disorders through restorative methods, such as gene therapy, stem cell therapy, and tissue engineering. Stem cell transplantation has salutary effects through direct and indirect actions, the latter being attributable to growth factors and cytokines released by stem cells and influencing the endogenous mechanisms of repair...
December 1, 2016: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27916586/selaginella-uncinata-flavonoids-ameliorated-ovalbumin-induced-airway-inflammation-in-a-rat-model-of-asthma
#18
Bing Yu, Wei Cai, Huan-Huan Zhang, Yu-Sen Zhong, Jie Fang, Wen-You Zhang, Li Mo, Lu-Chen Wang, Chen-Huan Yu
ETHNOPHARMACOLOGICAL RELEVANCE: Selaginella uncinata (Desv.) Spring, known as "Cuiyuncao" is a perennial herb widely distributed in the Southeast Asian countries. In the folk medicine, the local minority commonly use it to treat cough and asthma for centuries. AIM OF THE STUDY: This study was carried out to investigate the protective mechanisms of total flavonoids from S. uncinata (SUF) on airway hyperresponsiveness, cytokine release and bitter taste receptors (T2Rs) signaling with emphasis on inflammatory responses in a rat model of ovalbumin (OVA)-induced asthma...
December 1, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27915186/role-of-the-purinergic-signaling-in-epilepsy
#19
REVIEW
Marek Cieślak, Andrzej Wojtczak, Michał Komoszyński
Adenine nucleotides and adenosine are signaling molecules that activate purinergic receptors P1 and P2. Activation of A1 adenosine receptors has an anticonvulsant action, whereas activation of A2A receptors might initiate seizures. Therefore, a significant limitation to the use of A1 receptor agonists as drugs in the CNS might be their peripheral side effects. The anti-epileptic activity of adenosine is related to its increased concentration outside the cell. This increase might result from the inhibition of the equilibrative nucleoside transporters (ENTs)...
September 22, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/27914933/differential-synthesis-and-release-of-il-18-and-il-18-binding-protein-from-human-platelets-and-their-implications-for-hiv-infection
#20
Ossama Allam, Suzanne Samarani, Mohammad-Ali Jenabian, Jean-Pierre Routy, Cecile Tremblay, Devendra Amre, Ali Ahmad
IL-18 is a pro-inflammatory cytokine belonging to the IL-1 family and is produced in the body from macrophages, epithelial and dendritic cells, keratinocytes, adrenal cortex etc. The cytokine is produced as an inactive precursor that is cleaved inside cells into its mature form by activated caspase 1, which exists as an inactive precursor in human cells and requires assembly of an inflammasomes for its activation. We show here for the first time that human platelets contain transcripts for the IL-18 gene. They synthesize the cytokine de novo, process and release it upon activation...
December 1, 2016: Cytokine
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