Toll-like receptor 2 expression is decreased on alveolar macrophages in cigarette smokers and COPD patients.

Abstract:

BACKGROUND:Cigarette smoke exposure including biologically active lipopolysaccharide (LPS) in the particulate phase of cigarette smoke induces activation of alveolar macrophages (AM) and alveolar epithelial cells leading to production of inflammatory mediators. This represents a crucial mechanism in the pathogenesis of chronic obstructive pulmonary disease (COPD). Respiratory pathogens are a major cause of exacerbations leading to recurrent cycles of injury and repair. The interaction between pathogen-associated molecular patterns and the host is mediated by pattern recognition receptors (PRR's). In the present study we characterized the expression of Toll-like receptor (TLR)- 2, TLR4 and CD14 on human AM compared to autologous monocytes obtained from patients with COPD, healthy smokers and non-smokers. METHODS:The study population consisted of 14 COPD patients without evidence for acute exacerbation, 10 healthy smokers and 17 healthy non-smokers stratified according to age. The expression of TLR2, TLR4 and CD14 surface molecules on human AM compared to autologous monocytes was assessed ex vivo using FACS analysis. In situ hybridization was performed on bronchoalveolar lavage (BAL) cells by application of the new developed HOPE-fixative. RESULTS:The expression of TLR2, TLR4 and CD14 on AM from COPD patients, smokers and non-smokers was reduced as compared to autologous monocytes. Comparing AM we detected a reduced expression of TLR2 in COPD patients and smokers. In addition TLR2 mRNA and protein expression was increased after LPS stimulation on non-smokers AM in contrast to smokers and COPD patients. CONCLUSION:Our data suggest a smoke related change in the phenotype of AM's and the cellular response to microbial stimulation which may be associated with impairment of host defenses in the lower respiratory tract.

journal_name

Respir Res

journal_title

Respiratory research

authors

Droemann D,Goldmann T,Tiedje T,Zabel P,Dalhoff K,Schaaf B

doi

10.1186/1465-9921-6-68

keywords:

subject

Has Abstract

pub_date

2005-07-08 00:00:00

pages

68

eissn

1465-9921

issn

1465-993X

pii

1465-9921-6-68

journal_volume

6

pub_type

杂志文章
  • Sequential broncho-alveolar lavages reflect distinct pulmonary compartments: clinical and research implications in lung transplantation.

    abstract:BACKGROUND:Bronchoalveolar lavage (BAL) has proven to be very useful to monitor the lung allograft after transplantation. In addition to allowing detection of infections, multiple BAL analytes have been proposed as potential biomarkers of lung allograft rejection or dysfunction. However, BAL collection is not well stan...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-018-0786-z

    authors: Levy L,Juvet SC,Boonstra K,Singer LG,Azad S,Joe B,Cypel M,Keshavjee S,Martinu T

    更新日期:2018-05-25 00:00:00

  • Role and regulation of MKP-1 in airway inflammation.

    abstract::Mitogen-activated protein kinase (MAPK) phosphatase 1 (MKP-1) is a protein with anti-inflammatory properties and the archetypal member of the dual-specificity phosphatases (DUSPs) family that have emerged over the past decade as playing an instrumental role in the regulation of airway inflammation. Not only does MKP-1...

    journal_title:Respiratory research

    pub_type: 杂志文章,评审

    doi:10.1186/s12931-017-0637-3

    authors: Moosavi SM,Prabhala P,Ammit AJ

    更新日期:2017-08-10 00:00:00

  • Role of epidermal growth factor receptor activation in regulating mucin synthesis.

    abstract::Healthy individuals have few goblet cells in their airways, but in patients with hypersecretory diseases goblet-cell upregulation results in mucus hypersecretion, airway plugging, and death. Multiple stimuli produce hypersecretion via epidermal growth factor receptor (EGFR) expression and activation, causing goblet-ce...

    journal_title:Respiratory research

    pub_type: 杂志文章,评审

    doi:10.1186/rr43

    authors: Nadel JA

    更新日期:2001-01-01 00:00:00

  • Disturbance of the OPG/RANK/RANKL pathway and systemic inflammation in COPD patients with emphysema and osteoporosis.

    abstract:BACKGROUND:Osteoporosis is one of the systemic features of COPD. A correlation between the emphysema phenotype of COPD and reduced bone mineral density (BMD) is suggested by some studies, however, the mechanisms underlying this relationship are unclear. Experimental studies indicate that IL-1β, IL-6 and TNF-α may play ...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-12-157

    authors: Bai P,Sun Y,Jin J,Hou J,Li R,Zhang Q,Wang Y

    更新日期:2011-12-16 00:00:00

  • The unique alterations of hippocampus and cognitive impairment in chronic obstructive pulmonary disease.

    abstract:BACKGROUND:Cognitive impairment has been found in chronic obstructive pulmonary disease (COPD) patients. However, the structural alteration of the brain and underlying mechanisms are poorly understood. METHODS:Thirty-seven mild-to-moderate COPD patients, forty-eight severe COPD patients, and thirty-one control subject...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-14-140

    authors: Li J,Fei GH

    更新日期:2013-12-21 00:00:00

  • Hospitalisation and mortality in patients with comorbid COPD and heart failure: a systematic review and meta-analysis.

    abstract:BACKGROUND:Discrepancy exists amongst studies investigating the effect of comorbid heart failure (HF) on the morbidity and mortality of chronic obstructive pulmonary disease (COPD) patients. METHODS:MEDLINE and Embase were searched using a pre-specified search strategy for studies comparing hospitalisation, rehospital...

    journal_title:Respiratory research

    pub_type: 杂志文章,meta分析

    doi:10.1186/s12931-020-1312-7

    authors: Axson EL,Ragutheeswaran K,Sundaram V,Bloom CI,Bottle A,Cowie MR,Quint JK

    更新日期:2020-02-14 00:00:00

  • Real world evaluation of a novel lateral flow assay (AlphaKit® QuickScreen) for the detection of alpha-1-antitrypsin deficiency.

    abstract:BACKGROUND:Alpha-1-Antitrypsin (AAT) deficiency (AATD) is a hereditary disorder that manifests primarily as pulmonary emphysema and liver cirrhosis. The clinically most relevant mutation causing AATD is a single nucleotide polymorphism Glu342Lys (Z-mutation). Despite the recommendation to test every COPD patient, the c...

    journal_title:Respiratory research

    pub_type: 杂志文章,多中心研究

    doi:10.1186/s12931-018-0826-8

    authors: Greulich T,Rodríguez-Frias F,Belmonte I,Klemmer A,Vogelmeier CF,Miravitlles M

    更新日期:2018-08-13 00:00:00

  • IL-33, diet-induced obesity, and pulmonary responses to ozone.

    abstract:BACKGROUND:Obesity augments pulmonary responses to ozone. We have reported that IL-33 contributes to these effects of obesity in db/db mice. The purpose of this study was to determine whether IL-33 also contributes to obesity-related changes in the response to ozone in mice with diet-induced obesity. METHODS:Male wild...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-020-01361-9

    authors: Kasahara DI,Shore SA

    更新日期:2020-04-23 00:00:00

  • Collaborative interactions between neutrophil elastase and metalloproteinases in extracellular matrix degradation in three-dimensional collagen gels.

    abstract:BACKGROUND:Extended culture of monocytes and fibroblasts in three-dimensional collagen gels leads to degradation of the gels (see linked study in this issue, "Fibroblasts and monocytes contract and degrade three-dimensional collagen gels in extended co-culture"). The current study, therefore, was designed to evaluate p...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/rr73

    authors: Zhu Y,Liu X,Sköld CM,Wang H,Kohyama T,Wen FQ,Ertl RF,Rennard SI

    更新日期:2001-01-01 00:00:00

  • Macrophage CD74 contributes to MIF-induced pulmonary inflammation.

    abstract:BACKGROUND:MIF is a critical mediator of the host defense, and is involved in both acute and chronic responses in the lung. Neutralization of MIF reduces neutrophil accumulation into the lung in animal models. We hypothesized that MIF, in the alveolar space, promotes neutrophil accumulation via activation of the CD74 r...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-10-33

    authors: Takahashi K,Koga K,Linge HM,Zhang Y,Lin X,Metz CN,Al-Abed Y,Ojamaa K,Miller EJ

    更新日期:2009-05-04 00:00:00

  • Idiopathic pulmonary fibrosis patients with severe physiologic impairment: characteristics and outcomes.

    abstract:RESEARCH QUESTION:There is no widely accepted grading system for IPF disease severity, although physiologic impairment based on pulmonary function testing is frequently employed. We sought to describe clinical and functional characteristics as well as outcomes of patients with severe physiologic impairment. PATIENTS A...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-020-01600-z

    authors: Pastre J,Barnett S,Ksovreli I,Taylor J,Brown AW,Shlobin OA,Ahmad K,Khangoora V,Aryal S,King CS,Nathan SD

    更新日期:2021-01-06 00:00:00

  • Chitinase-like protein YKL-40 correlates with inflammatory phenotypes, anti-asthma responsiveness and future exacerbations.

    abstract:BACKGROUND:Asthma is a heterogeneous chronic airway disease, which may be classified into different phenotypes. YKL-40 is a chitin-binding glycoprotein with unclear functions, but its expression is associated with inflammation and tissue remodeling. However, few studies have explored whether YKL-40 is associated with i...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-019-1051-9

    authors: Liu L,Zhang X,Liu Y,Zhang L,Zheng J,Wang J,Hansbro PM,Wang L,Wang G,Hsu AC

    更新日期:2019-05-22 00:00:00

  • The TNFalpha gene relates to clinical phenotype in alpha-1-antitrypsin deficiency.

    abstract:BACKGROUND:Genetic variation may underlie phenotypic variation in chronic obstructive pulmonary disease (COPD) in subjects with and without alpha 1 antitrypsin deficiency (AATD). Genotype specific sub-phenotypes are likely and may underlie the poor replication of previous genetic studies. This study investigated subjec...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-9-52

    authors: Wood AM,Simmonds MJ,Bayley DL,Newby PR,Gough SC,Stockley RA

    更新日期:2008-07-11 00:00:00

  • Outcome measures for airway clearance techniques in children with chronic obstructive lung diseases: a systematic review.

    abstract:BACKGROUND:Airway clearance techniques (ACTs) are an important aspect of the treatment of children with chronic obstructive lung diseases. Unfortunately, a sound evidence base is lacking and airway clearance strategies are largely based on clinical expertise. One of the reasons for the limited evidence is the lack of a...

    journal_title:Respiratory research

    pub_type: 杂志文章,评审

    doi:10.1186/s12931-020-01484-z

    authors: Lauwers E,Ides K,Van Hoorenbeeck K,Verhulst S

    更新日期:2020-08-17 00:00:00

  • Five microRNAs in plasma as novel biomarkers for screening of early-stage non-small cell lung cancer.

    abstract:BACKGROUND:In order to find novel noninvasive biomarkers with high accuracy for the screening of early-stage non-small cell lung cancer (NSCLC), we investigate the predictive power of 5 microRNAs (miR-20a, miR-145, miR-21, miR223 and miR-221) as potential biomarkers in early-stage NSCLC. METHODS:In training set, 25 ea...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-014-0149-3

    authors: Geng Q,Fan T,Zhang B,Wang W,Xu Y,Hu H

    更新日期:2014-11-25 00:00:00

  • Fractal ventilation enhances respiratory sinus arrhythmia.

    abstract:BACKGROUND:Programming a mechanical ventilator with a biologically variable or fractal breathing pattern (an example of 1/f noise) improves gas exchange and respiratory mechanics. Here we show that fractal ventilation increases respiratory sinus arrhythmia (RSA) -- a mechanism known to improve ventilation/perfusion mat...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-6-41

    authors: Mutch WA,Graham MR,Girling LG,Brewster JF

    更新日期:2005-05-09 00:00:00

  • Body composition and functional limitation in COPD.

    abstract:BACKGROUND:Low body mass index has been associated with increased mortality in severe COPD. The impact of body composition earlier in the disease remains unclear. We studied the impact of body composition on the risk of functional limitation in COPD. METHODS:We used bioelectrical impedance to estimate body composition...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-8-7

    authors: Eisner MD,Blanc PD,Sidney S,Yelin EH,Lathon PV,Katz PP,Tolstykh I,Ackerson L,Iribarren C

    更新日期:2007-01-29 00:00:00

  • Population specificity of the DNAI1 gene mutation spectrum in primary ciliary dyskinesia (PCD).

    abstract:BACKGROUND:Mutations in the DNAI1 gene, encoding a component of outer dynein arms of the ciliary apparatus, are the second most important genetic cause of primary ciliary dyskinesia (PCD), the genetically heterogeneous recessive disorder with the prevalence of ~1/20,000. The estimates of the DNAI1 involvement in PCD pa...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-11-174

    authors: Ziętkiewicz E,Nitka B,Voelkel K,Skrzypczak U,Bukowy Z,Rutkiewicz E,Humińska K,Przystałowska H,Pogorzelski A,Witt M

    更新日期:2010-12-08 00:00:00

  • A predictive scoring instrument for tuberculosis lost to follow-up outcome.

    abstract:BACKGROUND:Adherence to tuberculosis (TB) treatment is troublesome, due to long therapy duration, quick therapeutic response which allows the patient to disregard about the rest of their treatment and the lack of motivation on behalf of the patient for improved. The objective of this study was to develop and validate a...

    journal_title:Respiratory research

    pub_type: 杂志文章,多中心研究

    doi:10.1186/1465-9921-13-75

    authors: Rodrigo T,Caylà JA,Casals M,García-García JM,Caminero JA,Ruiz-Manzano J,Blanquer R,Vidal R,Altet N,Calpe JL,Penas A,Working Group on Completion of Tuberculosis Treatment in Spain.

    更新日期:2012-09-02 00:00:00

  • Cleaved cytokeratin-18 is a mechanistically informative biomarker in idiopathic pulmonary fibrosis.

    abstract:BACKGROUND:Stress of the endoplasmic reticulum (ER) leading to activation of the unfolded protein response (UPR) and alveolar epithelial cell (AEC) apoptosis may play a role in the pathogenesis of idiopathic pulmonary fibrosis (IPF). Our objectives were to determine whether circulating caspase-cleaved cytokeratin-18 (c...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-13-105

    authors: Cha SI,Ryerson CJ,Lee JS,Kukreja J,Barry SS,Jones KD,Elicker BM,Kim DS,Papa FR,Collard HR,Wolters PJ

    更新日期:2012-11-20 00:00:00

  • IL-22 contributes to TGF-β1-mediated epithelial-mesenchymal transition in asthmatic bronchial epithelial cells.

    abstract:BACKGROUND:Allergic asthma is characterized by airway inflammation in response to antigen exposure, leading to airway remodeling and lung dysfunction. Epithelial-mesenchymal transition (EMT) may play a role in airway remodeling through the acquisition of a mesenchymal phenotype in airway epithelial cells. TGF-β1 is kno...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-14-118

    authors: Johnson JR,Nishioka M,Chakir J,Risse PA,Almaghlouth I,Bazarbashi AN,Plante S,Martin JG,Eidelman D,Hamid Q

    更新日期:2013-11-01 00:00:00

  • Inhaled tolafentrine reverses pulmonary vascular remodeling via inhibition of smooth muscle cell migration.

    abstract:BACKGROUND:The aim of the study was to assess the chronic effects of combined phosphodiesterase 3/4 inhibitor tolafentrine, administered by inhalation, during monocrotaline-induced pulmonary arterial hypertension (PAH) in rats. METHODS:CD rats were given a single subcutaneous injection of monocrotaline to induce PAH. ...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-6-128

    authors: Pullamsetti S,Krick S,Yilmaz H,Ghofrani HA,Schudt C,Weissmann N,Fuchs B,Seeger W,Grimminger F,Schermuly RT

    更新日期:2005-11-01 00:00:00

  • The dendritic cell niche in chronic obstructive pulmonary disease.

    abstract::The pulmonary innate immune system is heavily implicated in the perpetual airway inflammation and impaired host defense characterizing Chronic Obstructive Pulmonary Disease (COPD). The airways of patients suffering from COPD are infiltrated by various immune and inflammatory cells including macrophages, neutrophils, T...

    journal_title:Respiratory research

    pub_type: 评论,杂志文章

    doi:10.1186/1465-9921-13-80

    authors: Haczku A

    更新日期:2012-09-19 00:00:00

  • Reduced HDAC2 in skeletal muscle of COPD patients.

    abstract:BACKGROUND:Skeletal muscle weakness in chronic obstructive pulmonary disease (COPD) is an important predictor of poor prognosis, but the molecular mechanisms of muscle weakness in COPD have not been fully elucidated. The aim of this study was to investigate the role of histone deacetylases(HDAC) in skeletal muscle weak...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-017-0588-8

    authors: To M,Swallow EB,Akashi K,Haruki K,Natanek SA,Polkey MI,Ito K,Barnes PJ

    更新日期:2017-05-19 00:00:00

  • Exposure to common respiratory bacteria alters the airway epithelial response to subsequent viral infection.

    abstract:BACKGROUND:Colonization of the airways with potential pathogenic bacteria is observed in a number of chronic respiratory diseases, such as COPD or cystic fibrosis. Infections with respiratory viruses are known triggers of exacerbations of these diseases. We here investigated if pre-exposure to bacteria alters the respo...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-016-0382-z

    authors: Bellinghausen C,Gulraiz F,Heinzmann AC,Dentener MA,Savelkoul PH,Wouters EF,Rohde GG,Stassen FR

    更新日期:2016-06-03 00:00:00

  • 25-Hydroxycholesterol enhances cytokine release and Toll-like receptor 3 response in airway epithelial cells.

    abstract:BACKGROUND:25-hydroxycholesterol (25-HC) is one of the oxysterols, which are oxidized derivatives of cholesterol, and has been reported to be involved in the pathogenesis of atherosclerosis and Alzheimer's disease. In lung, the possible involvement of 25-HC in airway diseases has been revealed. In the present study, we...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-13-63

    authors: Koarai A,Yanagisawa S,Sugiura H,Ichikawa T,Kikuchi T,Furukawa K,Akamatsu K,Hirano T,Nakanishi M,Matsunaga K,Minakata Y,Ichinose M

    更新日期:2012-07-31 00:00:00

  • Surfactant proteins, SP-A and SP-D, in respiratory fungal infections: their role in the inflammatory response.

    abstract::Pulmonary surfactant is a complex fluid that comprises phospholipids and four proteins (SP-A, SP-B, SP-C, and SP-D) with different biological functions. SP-B, SP-C, and SP-D are essential for the lungs' surface tension function and for the organization, stability and metabolism of lung parenchyma. SP-A and SP-D, which...

    journal_title:Respiratory research

    pub_type: 杂志文章,评审

    doi:10.1186/s12931-016-0385-9

    authors: Carreto-Binaghi LE,Aliouat el M,Taylor ML

    更新日期:2016-06-01 00:00:00

  • Isolation of human beta-defensin-4 in lung tissue and its increase in lower respiratory tract infection.

    abstract:BACKGROUND:Human beta-defensin-4 (hBD-4), a new member of the beta-defensin family, was discovered by an analysis of the genomic sequence. The objective of this study was to clarify hBD-4 expression in human lung tissue, along with the inducible expression in response to infectious stimuli, localization, and antimicrob...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-6-130

    authors: Yanagi S,Ashitani J,Ishimoto H,Date Y,Mukae H,Chino N,Nakazato M

    更新日期:2005-11-04 00:00:00

  • Epigenetics dysfunction in morbid obesity with or without obstructive sleep apnoea: the EPIMOOSA study.

    abstract:BACKGROUND:Obstructive sleep apnoea (OSA) and morbid obesity (MO), defined by a body mass index ≥35 kg/m2, are two closely related conditions. Recent studies suggest that circulating microRNA (miRNA) plays a potential role in the physiopathology of both conditions. To date, circulating miRNA expression has been studied...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-020-1302-9

    authors: Lázaro J,Clavería P,Cabrejas C,Fernando J,Daga B,Ordoñez B,Segura S,Sanz-Rubio D,Marín JM

    更新日期:2020-02-04 00:00:00

  • Increase in markers of airway inflammation after ozone exposure can be observed also in stable treated asthmatics with minimal functional response to ozone.

    abstract:BACKGROUND:The discrepancy between functional and inflammatory airway response to ozone has been reported in normal subjects, but few data are available for stable asthmatics regularly treated with inhaled corticosteroids. METHODS:Twenty-three well controlled, regularly treated, mild-to-moderate asthmatic patients und...

    journal_title:Respiratory research

    pub_type: 杂志文章,随机对照试验

    doi:10.1186/1465-9921-11-5

    authors: Vagaggini B,Bartoli ML,Cianchetti S,Costa F,Bacci E,Dente FL,Di Franco A,Malagrinò L,Paggiaro P

    更新日期:2010-01-19 00:00:00