Abstract:
OBJECTIVES:COPD is an abnormal inflammatory response characterized by decreased expression of TLR2 in patients, which is suggested to induce invasive pulmonary aspergillosis (IPA). MicroRNAs (miRNAs) have been shown to play important roles in the pathogenesis of human respiratory system disorders. Therefore, the aim of this study was to identify the miRNAs involved in the regulation of TLR2 signaling in COPD. MATERIALS AND METHODS:miRNA microarray analysis was performed to screen for the dysregulated miRNAs in alveolar macrophages (AMs) isolated from COPD rats. The interaction between these miRNAs and TLR2 gene was predicted using miRBase and validated using dual luciferase assay. Based on the analysis, a novel miR-344b-1-3p was identified as a novel modulator of TLR2 gene. Then, the mechanism through which miR-344b-1-3p regulated TLR2 expression was explored using cigarette smoke extract (CSE)-pretreated NR8383 cells. Moreover, by subjecting CSE-pretreated NR8383 cells to Pam3CSK4, the effect of miR-344b-1-3p on NF-κB activity and other important mediators of COPD, including IRAK-1, ERK, TNF-α, IL-1β, and MIP-2, was also assessed. RESULTS:COPD rat model was successfully induced by smoke inhalation. Among the 11 upregulated miRNAs in AMs from COPD rats, miR-344b-1-3p was predicted to be a novel miRNA targeting TLR2 gene. In the CSE pretreated NR8383 cells exposed to Pam3CSK4, miR-344b-1-3p inhibition increased the expression levels of TLR2, TNF-α, and IL-1β and decreased the expression levels of MIP-2. In addition, the phosphorylation of IRAK-1, IκBα, and IRK was augmented by miR-344b-1-3p inhibition. CONCLUSION:Findings outlined in this study suggest that miR-344b-1-3p was an effective modulator of TLR2 gene, which can be employed as a promising therapeutic and preventive target of IPA in COPD patients.
journal_name
Int J Chron Obstruct Pulmon Disauthors
Xu H,Wu Y,Li L,Yuan W,Zhang D,Yan Q,Guo Z,Huang Wdoi
10.2147/COPD.S120415subject
Has Abstractpub_date
2017-02-14 00:00:00pages
627-638eissn
1176-9106issn
1178-2005pii
copd-12-627journal_volume
12pub_type
杂志文章abstract::Health status questionnaires provide standardized measures of patients' perceptions of the impact of disease on their daily life and well-being. Factors associated with health status were examined in a sample of 58 outpatients with chronic obstructive pulmonary disease (COPD) and co-morbid anxiety and/or depression. A...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章,随机对照试验
doi:
更新日期:2007-01-01 00:00:00
abstract:Purpose:Chest physiotherapy is an important tool in the treatment of COPD. Intrapulmonary percussive ventilation (IPV) and high-frequency chest wall oscillation (HFCWO) are techniques designed to create a global percussion of the lung which removes secretions and probably clears the peripheral bronchial tree. We tested...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章,随机对照试验
doi:10.2147/COPD.S145440
更新日期:2018-02-16 00:00:00
abstract::Visual and auditory analysis of respiratory sound signals promises improved detection of certain types of lung diseases. LabVIEW software was used to design a system that monitors the respiratory activity of the patient. The program developed calculates the respiratory rate, displays the time expanded waveform of the ...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S20067
更新日期:2011-01-01 00:00:00
abstract:BACKGROUND:It has been scientifically proven that pulmonary rehabilitation improves exercise tolerance and facilitates the carrying out of daily physical activities. To optimize the physical and physiological benefits, it is necessary to individualize the training intensity for each patient. The aim of this study is to...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S129889
更新日期:2017-05-16 00:00:00
abstract:Background:Microparticles (MPs) are shedding membrane vesicles released from activated blood and endothelial cells under inflammatory conditions. The role of endothelial MPs (EMPs) in pathophysiology of COPD is relatively well known. However, the release and function of MPs of other cellular origins, eg, platelets, red...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S175607
更新日期:2018-11-15 00:00:00
abstract:BACKGROUND:Although chronic obstructive pulmonary disease (COPD) is closely associated with gastroesophageal reflux disease (GERD), the clinical significance of laryngopharyngeal reflux (LPR) is not fully understood in COPD. METHODS:Prospective cohorts were established among 118 patients with COPD from March 2013 to J...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S84337
更新日期:2015-07-15 00:00:00
abstract:PURPOSE:This study was conducted to determine COPD severity at the time of diagnosis as confirmed by spirometry in patients treated in a US managed care setting. PATIENTS AND METHODS:All patients with one or more inpatient stays, one or more emergency department visits, or two or more outpatient visits with diagnosis ...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S16975
更新日期:2011-01-01 00:00:00
abstract:Background:Since most internal medicine nurses work with chronic obstructive pulmonary disease (COPD) patients daily, their ability to meet the needs of COPD patients is an important issue. Our study aimed to assess COPD-related knowledge in internal medicine nurses. Methods:A descriptive cross-sectional study includi...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S232055
更新日期:2019-12-17 00:00:00
abstract:Background:COPD may lead to cognitive impairment or even dementia. However, the current conclusions are inconsistent with little evidence from prospective, large-sample studies. This study was designed to explore the association of COPD with mild cognitive impairment (MCI) and dementia risk based on a cohort study. Pa...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S194277
更新日期:2019-02-13 00:00:00
abstract:Background:Chronic obstructive pulmonary disease (COPD) is prevalent and poses a heavy burden worldwide. However, patients know little about COPD, and primary health care providers have poor therapy capability in China. Enjoying Breathing Program aims to establish a new comprehensive COPD patient management system, inc...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S258479
更新日期:2020-09-15 00:00:00
abstract::The landmark study of Fletcher and Peto on the natural history of tobacco smoke-related chronic airflow obstruction suggested that decline in the forced expiratory volume in the first second (FEV(1)) in chronic obstructive pulmonary disease (COPD) is slow at the beginning, becoming faster with more advanced disease. T...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章,评审
doi:10.2147/COPD.S27480
更新日期:2012-01-01 00:00:00
abstract::COPD exerts a substantial burden on health and health care systems globally and will continue to do so for the foreseeable future. Treatment however can be costly and health care providers are interested in both whether treatments can offer improvements in disease burden and whether they represent value for money. Eco...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章,评审
doi:
更新日期:2008-01-01 00:00:00
abstract:BACKGROUND:Despite the availability of national and international guidelines, evidence suggests that chronic obstructive pulmonary disease (COPD) treatment is not always prescribed according to recommendations. This study evaluated the current management of patients with COPD using a large UK primary-care database. ME...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S62750
更新日期:2014-08-27 00:00:00
abstract:BACKGROUND:Acute exacerbations are the leading causes of hospitalization and mortality in patients with COPD. Prognostic tools for patients with chronic COPD exist, but there are scarce data regarding acute exacerbations. We aimed to identify the prognostic factors of death and readmission after exacerbation of COPD. ...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S122382
更新日期:2017-01-31 00:00:00
abstract::A number of excellent intervention studies related to clinical and psychosocial aspects of chronic obstructive pulmonary disease (COPD) have been undertaken in the recent past. A range of outcomes have been examined including pulmonary function, health care use, quality of life, anxiety and depression, ambulation, exe...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章,评审
doi:
更新日期:2009-01-01 00:00:00
abstract:OBJECTIVE:β-Blockers are safe and improve survival in patients with both congestive heart failure (CHF) and COPD. However, the superiority of different types of β-blockers is still unclear among patients with CHF and COPD. The association between β-blockers and CHF exacerbation as well as COPD exacerbation remains uncl...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S141694
更新日期:2017-08-26 00:00:00
abstract:Background:Static hyperinflation is known to be increased during moderate acute exacerbations of chronic obstructive pulmonary disease (COPD) (AECOPD), but few data exist in patients with severe exacerbations of COPD. The role of dynamic hyperinflation during exacerbations is unclear. Methods:In a prospective, observa...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S154878
更新日期:2018-04-18 00:00:00
abstract::Cigarette smoking results in the accumulation of iron both systemically and locally, in the lung thereby causing imbalance in iron homeostasis. This disruption in iron homeostasis can be associated with oxidative stress and consequent tissue injury. Therefore, in this study, we tested the association between iron home...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S138457
更新日期:2017-07-18 00:00:00
abstract::Impaired physical performance is common in chronic obstructive pulmonary disease (COPD), but its assessment can be difficult in routine clinical practice. We compared the timed up and go (TUG) test and other easily applied assessments of physical performance with the 6-minute walk distance (6MWD). In a longitudinal st...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S106151
更新日期:2016-08-02 00:00:00
abstract::Chronic obstructive pulmonary disease (COPD) is the most common chronic lung disease in the world, and its associated health burdens and costs are mounting. Until recently, it was generally accepted that targeting the diagnosis of COPD early in its course was a relatively fruitless effort, since treatments other than ...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章,评审
doi:10.2147/COPD.S46198
更新日期:2014-02-27 00:00:00
abstract::Exacerbations of COPD represent an important medical and health care problem. Certain susceptible patients suffer recurrent exacerbations and as a consequence have a poorer prognosis. The effects of bronchial infection, either acute or chronic, and of the inflammation characteristic of the disease itself raise the que...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章,评审
doi:10.2147/COPD.S98333
更新日期:2016-03-11 00:00:00
abstract:BACKGROUND AND OBJECTIVE:It is known that biomarkers of systemic inflammation are raised in COPD caused by tobacco (T-COPD) compared with healthy controls, but there is less information on the inflammatory status of subjects with COPD caused by biomass smoke (B-COPD). In addition, the possible (if any) differences in i...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S141068
更新日期:2017-09-01 00:00:00
abstract::In this review we consider the therapeutic potential of targeting Akt for the treatment of COPD. Akt is a serine/threonine protein kinase that functions as a signaling intermediate linked to multiple signaling programs involved in survival, inflammation, and growth. Akt is closely associated with key membrane-bound re...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章,评审
doi:10.2147/copd.2006.1.1.31
更新日期:2006-01-01 00:00:00
abstract:BACKGROUND:Chronic obstructive pulmonary disease (COPD) is associated with an increased cardiovascular risk. However, the mechanisms for this association are yet unclear. The aim of this study was to investigate the relationship between brachial intima-media thickness (B-IMT), an independent predictor of cardiovascular...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S118596
更新日期:2017-01-04 00:00:00
abstract:STUDY OBJECTIVES:Patients with chronic obstructive pulmonary disease (COPD) have low exercise capacity and low content of high energetic phosphates in their skeletal muscles. The aim of the present study was to investigate whether creatine supplementation together with exercise training may increase physical performanc...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章,随机对照试验
doi:10.2147/copd.2006.1.4.445
更新日期:2006-01-01 00:00:00
abstract:Background:Although studies have examined the relationship between metabolic syndrome (MetS) and COPD, the incidence of MetS in individuals with COPD has not specifically been investigated. This study aimed to evaluate the incidence of MetS in subjects with airway obstruction using data from a community-based cohort. ...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S157453
更新日期:2018-06-28 00:00:00
abstract:BACKGROUND:Exercise intolerance is a major issue affecting many people with COPD. Six-minute walking distance (6MWD) is a widely used indicator of exercise capacity in patients with COPD. The process is strenuous and time-consuming, especially for patients who have muscle wasting. Anthropometric indicators that reflect...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S87714
更新日期:2015-09-08 00:00:00
abstract:Background:Despite chronic obstructive pulmonary disease (COPD) being the commonest non-communicable disease in Nepal, there is limited research evidence estimating the spirometry-based burden of COPD. This study aims to estimate the prevalence of COPD and its correlates through a community-based survey in Pokhara Metr...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S268110
更新日期:2020-09-29 00:00:00
abstract:Background and objectives:Cognitive impairment is a common extrapulmonary comorbidity in COPD patients. The default mode network (DMN) plays a critical role in maintaining the normal activities of humans, and its function can be evaluated by resting state functional magnetic resonance imaging. The aim of this study was...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S146870
更新日期:2018-02-07 00:00:00
abstract:Rationale:Acute exacerbations of chronic obstructive pulmonary disease (AECOPD) are caused by a variety of different etiologic agents. Our aim was to phenotype COPD exacerbations using imaging (chest X-ray [CXR] and computed tomography [CT]) and to determine the possible role of the blood tests (C-reactive protein [CRP...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S152484
更新日期:2018-01-08 00:00:00