Abstract:
:The purinergic P2X7 receptor (P2X7R) plays an important role during the immune response, participating in several events such as cytokine release, apoptosis, and necrosis. The bacterial endotoxin lipopolysaccharide (LPS) is one of the strongest stimuli of the immune response, and it has been shown that P2X7R activation can modulate LPS-induced responses. Moreover, a C-terminal binding site for LPS has been proposed. In order to evaluate if LPS can directly modulate the activity of the P2X7R, we tested several signaling pathways associated with P2X7R activation in HEK293 cells that do not express the TLR-4 receptor. We found that LPS alone was unable to induce any P2X7R-related activity, suggesting that the P2X7R is not directly activated by the endotoxin. On the other hand, preapplication of LPS inhibited ATP-induced currents, intracellular calcium increase, and ethidium bromide uptake and had no effect on ERK activation in HEK293 cells. In splenocytes-derived T-regulatory cells, in which ATP-induced apoptosis is driven by the P2X7R, LPS inhibited ATP-induced apoptosis. Altogether, these results demonstrate that LPS modulates the activity of the P2X7R and suggest that this effect could be of physiological relevance.
journal_name
Mediators Inflammjournal_title
Mediators of inflammationauthors
Leiva-Salcedo E,Coddou C,Rodríguez FE,Penna A,Lopez X,Neira T,Fernández R,Imarai M,Rios M,Escobar J,Montoya M,Huidobro-Toro JP,Escobar A,Acuña-Castillo Cdoi
10.1155/2011/152625subject
Has Abstractpub_date
2011-01-01 00:00:00pages
152625eissn
0962-9351issn
1466-1861journal_volume
2011pub_type
杂志文章abstract:STUDY OBJECTIVES:To assess serum amyloid alpha (SAA) pleural fluid levels in parapneumonic effusion (PPE) and to investigate SAA diagnostic performance in PPE diagnosis and outcome. METHODS:We studied prospectively 57 consecutive patients with PPE (empyema (EMP), complicated (CPE), and uncomplicated parapneumonic effu...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2011/237638
更新日期:2011-01-01 00:00:00
abstract::Monocyte chemotactic protein (MCP-1) is a specific monocyte chemoattractant and activating factor produced by both immune cells (mononuclear phagocytes and lymphocytes) and non-immune cells (parenchymal and stromal cells). In order to define the conditions under which human monocytes express MCP-1, monocytes were expo...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/S0962935194000050
更新日期:1994-01-01 00:00:00
abstract:BACKGROUND:Rodent models suggest that follistatin-like 3 (fstl3) is associated with diabetes and obesity. In humans, plasma fstl3 is reduced with gestational diabetes. In vitro, TNF-α induces fstl3 secretion, which suggests a link to inflammation. OBJECTIVE:To elucidate the association between plasma fstl3 and obesity...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2014/364209
更新日期:2014-01-01 00:00:00
abstract::Chlamydophila pneumoniae (CPn) is a common respiratory pathogen that causes a chronic and persistent airway infection. The elderly display an increased susceptibility and severity to this infection. However, the underlying mechanisms are not well understood. Dendritic cells (DCs) are the initiators and regulators of i...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2014/436438
更新日期:2014-01-01 00:00:00
abstract::The secretory leukocyte protease inhibitor (SLPI) is a low-molecular-weight inhibitor of proteases, such as elastase and cathepsin G which are released from leukocytes during phagocytosis. The purpose of this study was to determine whether or not SLPI is able to inhibit IgE-mediated histamine release. Nasal mucosa fro...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1080/09629359891162
更新日期:1998-01-01 00:00:00
abstract::To investigate the role of AEG-1 in glycolysis and tumorigenesis, we construct myc-AEG-1 expression vector and demonstrate a novel mechanism that AEG-1 may increase the activity of AMPK by Thr172 phosphorylation. The higher expression levels of AEG-1 in colorectal carcinoma cells were found but showed significant diff...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2014/287381
更新日期:2014-01-01 00:00:00
abstract::Since iron can contribute to detrimental radical generating processes through the Fenton and Haber-Weiss reactions, it seems to be a reasonable approach to modulate iron-related pathways in inflammation. In the human organism a counterregulatory reduction in iron availability is observed during inflammatory diseases. ...
journal_title:Mediators of inflammation
pub_type: 杂志文章,评审
doi:10.1155/2015/516740
更新日期:2015-01-01 00:00:00
abstract::Scorpion venoms consist of a complex of several toxins that exhibit a wide range of biological properties and actions, as well as chemical compositions, toxicity, and pharmacokinetic and pharmacodynamic characteristics. These venoms are associated with high morbility and mortality, especially among children. Victims o...
journal_title:Mediators of inflammation
pub_type: 杂志文章,评审
doi:10.1155/2010/903295
更新日期:2010-01-01 00:00:00
abstract::The close relationship between increased TLR-2 expression in blood monocytes and insulin resistance in RA patients is shown in this study. Traditional risk factors for metabolic disorders, including the waist circumstance, body mass index (BMI), triglyceride (TG), and ratio of TG to high density lipoprotein (HDL) chol...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2012/690525
更新日期:2012-01-01 00:00:00
abstract::Chronic kidney disease (CKD) patients, characterized by traditional and nontraditional risk factors, are prone to develop atheromatosis and thus cardiovascular events and mortality. The angiogenesis of the adventitial vasa vasorum (aVV) surrounding the carotid has been described as the atheromatosis initiator. Therefo...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2017/3795142
更新日期:2017-01-01 00:00:00
abstract:Aims:To assess the maresin 1 (MaR1) contents in type 2 diabetic patients with or without diabetic foot ulcer and to analyze the association of MaR1 concentrations with several metabolism-related parameters. Methods:Plasma MaR1 concentrations were analyzed in 96 subjects with normal glucose tolerant (NC, n = 43), type ...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2020/4539035
更新日期:2020-04-16 00:00:00
abstract::With the development of culture-independent techniques, numerous studies have demonstrated that the lower airway is not sterile in health and harbors diverse microbial communities. Furthermore, new evidence suggests that there is a distinct lower airway microbiome in those with chronic respiratory disease. To understa...
journal_title:Mediators of inflammation
pub_type: 杂志文章,评审
doi:10.1155/2017/3890601
更新日期:2017-01-01 00:00:00
abstract::Dengue is an acute febrile illness with a wide spectrum of signs and symptoms ranging from mild to severe forms characterized by plasma leakage that can be fatal. NK cells are one of the main effectors in early infection and may play an important role in dengue pathogenesis. We investigated NK cell involvement during ...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2017/5649214
更新日期:2017-01-01 00:00:00
abstract::The regulatory functions of glycosaminoglycan hyaluronan (HA) are suggested to be dependent on its molecular weight (MW). Proinflammatory and stimulatory effects are proposed mainly for the low MW HA. However, the complex response of blood phagocytes to HA of different MW is unclear. Herein, the effects of highly puri...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2010/380948
更新日期:2010-01-01 00:00:00
abstract::Th17 cells provide protective immunity to infections by fungi and extracellular bacteria as well as cancer but are also involved in chronic inflammation. The cells were first identified by their ability to produce interleukin 17A (IL-17A) and, subsequently, associated with chronic inflammation and autoimmunity. Th17 c...
journal_title:Mediators of inflammation
pub_type: 杂志文章,评审
doi:10.1155/2015/205156
更新日期:2015-01-01 00:00:00
abstract::Although it is now accepted that killer-cell inhibitory receptors (KIRs), which were molecularly cloned in 1995, deliver negative signals to natural killer (NK) cells regarding the recognition of target cells, it is still unclear how the expression of these receptors on lymphocytes is regulated. Therefore, we investig...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1080/09629359990324
更新日期:1999-01-01 00:00:00
abstract::Cardiovascular disease linked to atherosclerosis is the leading cause of death worldwide. Atherosclerosis is mainly linked to dysfunction in vascular endothelial cells and subendothelial accumulation of oxidized forms of LDL. In the present study, we investigated the role of myeloperoxidase oxidized LDL (Mox-LDL) in e...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2014/134635
更新日期:2014-01-01 00:00:00
abstract::The production of nitric oxide (NO) was measured in cultures of spleen cells stimulated by lipopolysaccharide (LPS), IL-2 or LPS + IL-2. We observed that NO synthesis is increased by IFN-gamma but inhibited by IFN-alpha/beta. This is not the case when IL-2 is present in the cultures, since interferons play a minor rol...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/S0962935196000117
更新日期:1996-01-01 00:00:00
abstract:Objective:Neuropeptide Y (NPY), an orexigenic peptide known to cause hyperphagia, has been involved in the occurrence and development of obesity. However, differences in the distribution of serum NPY levels in obese phenotypes (including metabolically unhealthy obesity (MUO) phenotype and metabolically healthy obesity ...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2020/7903140
更新日期:2020-08-04 00:00:00
abstract::Behçet's disease (BD) is an autoinflammatory disease that can lead to life- and sight-threating complications. Dendritic cells (DCs) are the most potent antigen-presenting cells that can regulate multiple inflammatory pathways. The objective of this study was to investigate the association of the DC stimulatory molecu...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2019/5761392
更新日期:2019-09-09 00:00:00
abstract::Causes of mortality from COVID-19 include respiratory failure, heart failure, and sepsis/multiorgan failure. TLR4 is an innate immune receptor on the cell surface that recognizes pathogen-associated molecular patterns (PAMPs) including viral proteins and triggers the production of type I interferons and proinflammator...
journal_title:Mediators of inflammation
pub_type: 杂志文章,评审
doi:10.1155/2021/8874339
更新日期:2021-01-14 00:00:00
abstract:BACKGROUND:Human and rodent leukocytes express high levels of the glucocorticoid-inducible protein annexin 1 (ANXA1) (previously referred to as lipocortin 1). Neutrophils and monocytes have abundant ANXA1 levels. AIM:We have investigated, for the first time, ANXA1 ultrastructural expression in rat eosinophils and comp...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1080/09629350210000015683
更新日期:2002-10-01 00:00:00
abstract::The CCN family member 2 (CCN2, also known as connective tissue growth factor) may behave as a risk biomarker and a potential therapeutic target for renal disease. CCN2 participates in the regulation of inflammation and fibrosis. TGF-β is considered the main fibrogenic cytokine; however, in some pathological settings T...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2015/506041
更新日期:2015-01-01 00:00:00
abstract:UNLABELLED:The aim of this study was to investigate the relationship between urinary eosinophil protein X (uEPX) and asthma symptoms, lung function, and other markers of eosinophilic airway inflammation in asthmatic school children. METHODS:A cross-sectional study was performed in 180 steroid dependent atopic children...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2007/49240
更新日期:2007-01-01 00:00:00
abstract::Peptide 204-212 of lipocortin (LC) 5 inhibited porcine pancreatic phospholipase A(2) (PLA(2)) induced rat stomach strip contractions and ADP induced rabbit platelet aggregation in a concentration dependent manner (IC(30) of 10 muM and 400 muM, respectively). The first two amino acids are not necessary since the eptape...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/S0962935193000146
更新日期:1993-01-01 00:00:00
abstract::Shinbaro3, a formulation derived from the hydrolysed roots of Harpagophytum procumbens var. sublobatum (Engl.) Stapf, has been clinically used in the pharamacopuncture treatment of arthritis in Korea. In the present study, Shinbaro3 inhibited NO generation in LPS-induced RAW 264.7 cells in a dose-dependent manner. Shi...
journal_title:Mediators of inflammation
pub_type: 杂志文章,收录出版
doi:10.1155/2018/4514329
更新日期:2018-04-05 00:00:00
abstract:BACKGROUND:Studies on peripheral benzodiazepine receptor function have yielded a diverse list of activities of which the anti-inflammatory effects need to be further examined. AIMS:To evaluate the role of steroids, nitric oxide and adenosine-deaminase in the anti-inflammatory effect of PK11195. METHODS:Pleurisy was i...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1080/09629350410001688486
更新日期:2004-04-01 00:00:00
abstract::Edelweiss (Leontopodium alpinum Cass.) is traditionally employed in folk medicine as an anti-inflammatory remedy. In nature, the plant is sparsely available and protected; therefore production of callus cultures was established. A concentrated ethanolic extract of culture homogenate, with leontopodic acid representing...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2012/498373
更新日期:2012-01-01 00:00:00
abstract::It is hypothesized that central nervous system inflammation induced by systematic inflammation due to surgical trauma plays a critical role in postoperative cognitive dysfunction. The potential inhibitory effect of nerve blockage with local anesthetics on peripheral inflammatory response has been reported. We hypothes...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2015/460125
更新日期:2015-01-01 00:00:00
abstract::Heart failure is the most frequent cardiac complication of chronic kidney disease (CKD). Biomarkers help identify high-risk patients. Natriuretic peptides (BNP and NT-proBNP) are largely used for monitoring patients with cardiac failure but are highly dependent on glomerular filtration rate (GFR). Soluble suppression ...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2018/3952526
更新日期:2018-10-08 00:00:00