Abstract:
:Both alveolar macrophages (AMs) and alveolar epithelial cells (AECs) are main targets of Mycobacterium tuberculosis (M. tuberculosis (Mtb)). Intercellular communications between mucosal AECs and AMs have important implications in cellular responses to exogenous insults. However, molecular mechanisms underpinning interactions responding to Mtb remain largely unknown. In this study, impacts of AECs on Toll-like receptor- (TLR-) mediated inflammatory responses of AMs to Mtb virulent strain H37Rv were interrogated using an air-liquid interface (ALI) coculture model of epithelial A549 cells and U937 monocyte-derived macrophage-like cells. Results showed that Mtb-activated TLR-mediated inflammatory responses in U937 cells were significantly alleviated when A549 cells were coinfected with H37Rv, in comparison with the infection of U937 cells alone. Mechanistically, PI3K/Akt/mTOR signaling was involved in the epithelial cell-modulated Mtb-activated TLR signaling. The epithelial cell-attenuated TLR signaling in U937s could be reversed by PI3K inhibitor LY294002 and mTOR inhibitor rapamycin, but not glycogen synthase kinase 3β inhibitor LiCl, suggesting that the epithelially modulated-TLR signaling in macrophages was in part caused by inhibiting the TLR-triggered PI3K/Akt/mTOR signaling pathway. Together, this study demonstrates that mucosal AEC-derived signals play an important role in modulating inflammatory responses of AMs to Mtb, which thus also offers an insight into cellular communications between AECs and AMs to Mtb infections.
journal_name
Mediators Inflammjournal_title
Mediators of inflammationauthors
Yang Y,Sun Y,Xu J,Bao K,Luo M,Liu X,Wang Ydoi
10.1155/2018/3685948subject
Has Abstractpub_date
2018-09-26 00:00:00pages
3685948eissn
0962-9351issn
1466-1861journal_volume
2018pub_type
杂志文章abstract::Delayed rectifier K(+)-channels (Kv1.3) are predominantly expressed in T lymphocytes. Based on patch-clamp studies, the channels play crucial roles in facilitating the calcium influx necessary to trigger lymphocyte activation and proliferation. Using selective channel inhibitors in experimental animal models, in vivo ...
journal_title:Mediators of inflammation
pub_type: 杂志文章,评审
doi:10.1155/2015/436572
更新日期:2015-01-01 00:00:00
abstract::The therapeutic strategies used in the treatment of hepatitis C are essentially based on the combination of direct-acting antiviral agents (DAAs). This therapy has been shown to be very effective in relation to patient adherence to treatment and has shown high rates of sustained virological response (SVR). However, th...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2019/4738237
更新日期:2019-11-04 00:00:00
abstract::TThe molecular mechanisms responsible for the development of hepatic fibrosis are not fully understood. The Nlrc4 inflammasome detects cytosolic presence of bacterial components, activating inflammatory cytokines to facilitate clearance of pathogens and infected cells. We hypothesized that low-grade constitutive activ...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2015/909827
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abstract::Endoglin is a coreceptor of the TGF-β superfamily predominantly expressed on the vascular endothelium and selective subsets of immune cells. We previously demonstrated that Endoglin heterozygous (Eng (+/-)) mice subjected to dextran sulfate sodium (DSS) developed persistent gut inflammation and pathological angiogenes...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2014/767185
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abstract:AIM:To determine induced sputum cell counts and interleukin-8 (IL-8), tumor necrosis factor alpha (TNF-alpha) and leukotriene B4 (LTB4) levels as markers of neutrophilic inflammation in moderate persistent asthma, and to evaluate the response to inhaled steroid therapy. METHODS:Forty-five moderate asthmatic patients a...
journal_title:Mediators of inflammation
pub_type: 临床试验,杂志文章
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abstract::To test the statistical association of the CRP and SAA1 locus variants with their corresponding circulating levels and metabolic and inflammatory biomarker levels by using mediation analysis, a sample population of 599 Taiwanese subjects was enrolled and five CRP and four SAA1 variants were genotyped. Correlation anal...
journal_title:Mediators of inflammation
pub_type: 杂志文章
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journal_title:Mediators of inflammation
pub_type: 杂志文章,评审
doi:10.1155/2019/4128682
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journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2017/6012795
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journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2013/461536
更新日期:2013-01-01 00:00:00
abstract::Endothelial dysfunction is regarded as an important factor in the pathogenesis of vascular disease in obesity-related type 2 diabetes. The imbalance in repair and injury (hyperglycemia, hypertension, dyslipidemia) results in microvascular changes, including apoptosis of microvascular cells, ultimately leading to diabe...
journal_title:Mediators of inflammation
pub_type: 杂志文章,评审
doi:10.1155/2010/792393
更新日期:2010-01-01 00:00:00
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journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2014/134974
更新日期:2014-01-01 00:00:00
abstract::To determine the role of mutant SOD1 gene (SOD1(G93A)) on muscle cell differentiation, we derived C2C12 muscle cell lines carrying a stably transfected SOD1(G93A) gene under the control of a myosin light chain (MLC) promoter-enhancer cassette. Expression of MLC/SOD1(G93A) in C2C12 cells resulted in dramatic inhibition...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2015/537853
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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::Psoriasis is a common chronic inflammatory multisystemic disease with a complex pathogenesis consisting of genetic, immunological, and environmental components. It is associated with a number of comorbidities, including diabetes, metabolic syndrome, obesity, and myocardial infarction. In addition, the severity of psor...
journal_title:Mediators of inflammation
pub_type: 杂志文章,评审
doi:10.1155/2019/7353420
更新日期:2019-05-28 00:00:00
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journal_title:Mediators of inflammation
pub_type: 杂志文章,评审
doi:10.1155/2014/141747
更新日期:2014-01-01 00:00:00
abstract::To elucidate the role of (1-->3)-beta-D-glucan in pulmonary aspergilloma, serum concentrations of (1-->3)-beta-D-glucan were measured repeatedly for as long as 10 months in eight patients. In four patients with inactive disease, concentrations of (1-->3)-beta-D-glucan were in the normal range.The concentrations of (1-...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1080/09629359791631
更新日期:1997-01-01 00:00:00
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journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2012/819636
更新日期:2012-01-01 00:00:00
abstract::Statins exert pleiotropic effects on endothelial cells in addition to lowering cholesterol. 15-Lipoxygenase-1 (ALOX15) has been implicated in vascular inflammation and disease. The relationship between atorvastatin and ALOX15 was investigated using a rat carotid artery balloon-injury model. Hematoxylin and eosin (HE) ...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2016/6769032
更新日期:2016-01-01 00:00:00
abstract:BACKGROUND:Platelet-activating factor (PAF) seems to be implicated in systemic lupus erythematosus (SLE) patients with associated renal diseases. AIMS:In this study, we ensured the role of PAF in SLE patients without renal complications. METHODS:Blood PAF and acetylhydrolase activity, plasma soluble phospholipase A(2...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1080/0962935031000097718
更新日期:2003-04-01 00:00:00
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journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2007/89649
更新日期:2007-01-01 00:00:00
abstract::In addition to the spectrum of biological action already known to be exhibited by acetylsalicylic acid (ASA) as an analgesic, anti-inflammatory and platelet aggregation inhibitor, there is growing evidence of a stimulatory effect on the immune system. ASA has been found to increase the production ofcytokines and to in...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/S0962935194000591
更新日期:1994-01-01 00:00:00
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journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2012/528568
更新日期:2012-01-01 00:00:00
abstract::In our previous study, lipopolysaccharide (LPS) significantly reduced the cell viability of primary bovine mammary epithelial cells (bMEC) leading to cell apoptosis, which were prevented by caffeic acid (CA) through inhibiting NF-κB activation and reducing proinflammatory cytokine expression. While the underlying mech...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2019/1897820
更新日期:2019-04-30 00:00:00
abstract::Surgery induces release of neuroendocrine hormones (cortisol), cytokines (interleukin-6: IL-6, tumour necrosis factor-alpha: TNF-alpha), acute phase proteins (C-reactive protein: CRP, leptin). We studied the effects of general and spinal anaesthesia on stress response to haemorrhoidectomy. Patients were assigned to ge...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/MI/2006/97257
更新日期:2006-01-01 00:00:00
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journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/S0962935193000754
更新日期:1993-01-01 00:00:00
abstract::[This retracts the article DOI: 10.1155/2018/4514329.]. ...
journal_title:Mediators of inflammation
pub_type: 撤回出版物
doi:10.1155/2020/7859157
更新日期:2020-09-29 00:00:00
abstract::This study was designated to evaluate the influence of behavioral depression on the airway leukocyte recruitment in allergic animals. To achieve this, total and differential cell counts in bronchoalveolar (BAL) fluid of ovalbumin (OVA)-sensitized and depressed rats was evaluated. Inescapable electric footshock, applie...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1080/09629350124118
更新日期:2001-08-01 00:00:00
abstract::Plasma GDF15 concentrations were measured in 612 Taiwanese individuals without overt systemic disease. Clinical parameters, GDF15 genetic variants, and 22 biomarker levels were analyzed. We further enrolled 86 patients with PAD and 481 patients with CAD, who received endovascular intervention and coronary angiography,...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2017/9398401
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abstract::Little is known about Yu-Ping-Feng (YPF), a typical Chinese herbal decoction, for its antitumor efficacy in non-small-cell lung cancer (NSCLC). Here, we found that YPF significantly inhibited the growth of Lewis lung cancer, prolonged the survival of tumor-bearing mice, promoted NK cell tumor infiltration, increased t...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/2016/3541283
更新日期:2016-01-01 00:00:00
abstract::Despite early recanalization of an occluded infarct artery, tissue reperfusion remains impaired in more than one-third of the acute myocardial infarction (AMI) patients owing to a process of reperfusion injury. The role of systemic inflammation in triggering this phenomenon is unknown. Proinflammatory factors (hs-CRP,...
journal_title:Mediators of inflammation
pub_type: 杂志文章
doi:10.1155/MI.2005.385
更新日期:2005-12-14 00:00:00