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https://www.readbyqxmd.com/read/29027380/different-expression-about-induced-sputum-cell-sorting-in-the-two-main-types-of-chronic-obstructive-pulmonary-disease
#1
Huifang Song, Chunmei Yun, Maoye Xu, Dejun Sun
BACKGROUND: The difference in expression of sputum cells types between the two main types of chronic obstructive pulmonary disease (COPD) is largely unknown. This study aims to investigate the difference and then wants to depend on sputum cells sorting to direct the treatment of COPD. METHODS: A total of 218 patients with stable COPD (FEV1 < 80%) were selected. Stable COPD patients (n = 218) were classified as eosinophilic (A phenotype) or noneosinophilic (B phenotype); sometimes, the subjects were separated into cough group (C phenotype) and dyspnea group (D phenotype)...
October 13, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/29027309/the-importance-of-symptoms-in-the-longitudinal-variability-of-clusters-in-copd-patients-a-validation-study
#2
Juan P de Torres, Jose M Marin, Cristina Martinez-Gonzalez, Pilar de Lucas-Ramos, Borja Cosio, Ciro Casanova
BACKGROUND AND OBJECTIVE: Cluster analysis has been utilized to explore phenotypic heterogeneity in chronic obstructive pulmonary disease (COPD). To date, little is known about the longitudinal variability of clusters in COPD patients. We aimed to evaluate the 2-year cluster variability in stable COPD patients. METHODS: We evaluated the following variables in COPD patients at baseline and 2 years later: age, gender, pack-year history, body mass index (BMI), modified Medical Research Council (MMRC) scale, 6-min walking distance (6MWD), spirometry and COPD Assessment Test (CAT)...
October 12, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/29025891/impact-and-associations-of-eosinophilic-inflammation-in-copd-analysis-of-the-aeris-cohort
#3
Viktoriya L Kim, Ngaire A Coombs, Karl J Staples, Kristoffer K Ostridge, Nicholas P Williams, Stephen A Wootton, Jeanne-Marie Devaster, Emmanuel Aris, Stuart C Clarke, Andrew C Tuck, Simon C Bourne, Tom M A Wilkinson
Eosinophilic inflammation in chronic obstructive pulmonary disease (COPD) predicts response to treatment, especially corticosteroids. We studied the nature of eosinophilic inflammation in COPD prospectively to examine the stability of this phenotype and its dynamics across exacerbations, and its associations with clinical phenotype, exacerbations and infection.127 patients aged 40-85 years with moderate to very severe COPD underwent repeated blood and sputum sampling at stable visits and within 72 h of exacerbation for 1 year...
October 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29020176/dpp4-the-mers-coronavirus-receptor-is-upregulated-in-lungs-of-smokers-and-copd-patients
#4
Leen J M Seys, W Widagdo, Fien M Verhamme, Alex Kleinjan, Wim Janssens, Guy F Joos, Ken R Bracke, Bart L Haagmans, Guy G Brusselle
Background: Middle East respiratory syndrome coronavirus (MERS-CoV) causes pneumonia with a relatively high case fatality rate in humans. Smokers and chronic obstructive pulmonary disease (COPD) patients have been reported to be more susceptible to MERS-CoV infection. Here, we determined the expression of MERS-CoV receptor, dipeptidyl peptidase IV (DPP4), in lung tissues of smokers without airflow limitation and COPD patients in comparison to non-smoking individuals (never-smokers). Methods: DPP4 expression was measured in lung tissue of lung resection specimens of never-smokers, smokers without airflow limitation, COPD GOLD stage II patients and in lung explants of end-stage COPD patients...
August 17, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29016655/meta-analysis-of-peripheral-blood-gene-expression-modules-for-copd-phenotypes
#5
Dominik Reinhold, Jarrett D Morrow, Sean Jacobson, Junxiao Hu, Benjamin Ringel, Max A Seibold, Craig P Hersh, Katerina J Kechris, Russell P Bowler
Chronic obstructive pulmonary disease (COPD) occurs typically in current or former smokers, but only a minority of people with smoking history develops the disease. Besides environmental factors, genetics is an important risk factor for COPD. However, the relationship between genetics, environment and phenotypes is not well understood. Sample sizes for genome-wide expression studies based on lung tissue have been small due to the invasive nature of sample collection. Increasing evidence for the systemic nature of the disease makes blood a good alternative source to study the disease, but there have also been few large-scale blood genomic studies in COPD...
2017: PloS One
https://www.readbyqxmd.com/read/28987319/mitochondria-telomeres-and-cell-senescence-implications-for-lung-ageing-and-disease
#6
REVIEW
Jodie Birch, Peter J Barnes, Joao F Passos
Cellular senescence, the irreversible loss of replicative capacity in somatic cells, plays a causal role in the development of age-related pathology and in a number of age-related chronic inflammatory diseases. The ageing lung is marked by an increasing number of senescent cells, and evidence is mounting that senescence may directly contribute to a number of age-related respiratory diseases, including chronic obstructive pulmonary disease (COPD) and idiopathic pulmonary fibrosis (IPF). Telomere dysfunction and alterations in mitochondrial homeostasis frequently occur in cellular senescence and are important to the development of the often detrimental senescence-associated secretory phenotype (SASP)...
October 4, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28979114/impact-of-overweight-and-obesity-on-acute-exacerbations-of-copd-subgroup-analysis-of-the-taiwan-obstructive-lung-disease-cohort
#7
Yu-Feng Wei, Ying-Huang Tsai, Chin-Chou Wang, Ping-Hung Kuo
PURPOSE: A low body mass index (BMI) is a poor prognostic marker of acute exacerbations and mortality in patients with COPD. However, the impact of overweight and obesity on COPD-related outcomes is uncertain. The aim of this study was to examine whether a high BMI is associated with the frequent exacerbator phenotype (≥2/year) in Taiwanese patients with COPD. PATIENTS AND METHODS: Data were obtained from the Taiwan Obstructive Lung Disease study, a retrospective, observational nationwide survey of COPD patients conducted at 12 hospitals in Taiwan...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28979112/sputum-cell-count-biomarkers-in-the-differentiation-of-asthma-copd-and-asthma-copd-overlap
#8
Jie Gao, Wutie Zhou, Bida Chen, Weiming Lin, Sifang Wu, Feng Wu
INTRODUCTION: Cell count in induced sputum is a noninvasive biomarker to assess airway inflammation phenotypes. Accordingly, sputum cell counts are extensively used in the treatment of asthma and COPD. Nevertheless, the clinical application of sputum cell counts in patients with asthma-COPD overlap (ACO) remains elusive. The aim of this study was to investigate sputum cell counts in patients with ACO which are different from those in patients with asthma and COPD and also to examine the relationship between sputum cell counts in bronchial reversibility and bronchial hyperresponsiveness (BHR)...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28978239/endothelial-function-in-patients-with-chronic-obstructive-pulmonary-disease-a-systematic-review-of-studies-using-flow-mediated-dilatation
#9
Anouk W Vaes, Martijn A Spruit, Jan Theunis, Nandu Goswami, Lowie E Vanfleteren, Frits M E Franssen, Emiel F M Wouters, Patrick De Boever
BACKGROUND: Cardiovascular disease is an important cause of morbidity and mortality in chronic obstructive pulmonary disease (COPD). Endothelial function may be involved in the pathogenesis of cardiovascular disease. In contrast to the attention given to pulmonary endothelial dysfunction, little is known about peripheral vascular changes in COPD. Therefore, we reviewed the literature on peripheral endothelial function in COPD. METHODS: Databases were screened for studies using ultrasound-based flow-mediated dilation (FMD), the reference method for assessing peripheral endothelial function, in stable COPD patients...
October 5, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28965921/therapeutic-approaches-of-asthma-and-copd-overlap
#10
REVIEW
Mitsuko Kondo, Jun Tamaoki
Asthma and COPD overlap (ACO) is an important clinical phenotype, due to the low-health-related quality of life (QOL), rapid decline in lung function, frequent exacerbation, and high economic burden. However, no large-scaled therapeutic trials of ACO have been conducted. At present, ACO is treated according to asthma/COPD guidelines. The goals of ACO treatment are to relieve symptoms and improve QOL and lung functions. Treatment must also prevent disease progression, airway remodeling, exacerbation, complications, and comorbidities...
September 28, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28959121/inhaled-steroids-and-active-smoking-drive-chronic-obstructive-pulmonary-disease-symptoms-and-biomarkers-to-a-greater-degree-than-airflow-limitation
#11
Philip E Silkoff, Dave Singh, J Mark FitzGerald, Andreas Eich, Andrea Ludwig-Sengpiel, Geoffrey C Chupp, Vibeke Backer, Celeste Porsbjerg, Pierre-Olivier Girodet, Mark T Dransfield, Frederic Baribaud, Vedrana S Susulic, Matthew J Loza
RATIONALE: Chronic obstructive pulmonary disease (COPD) is a heterogeneous disease, and development of novel therapeutics requires an understanding of pathophysiologic phenotypes. OBJECTIVES: The purpose of the Airways Disease Endotyping for Personalized Therapeutics (ADEPT) study was to correlate clinical features and biomarkers with molecular characteristics in a well-profiled COPD cohort. METHODS: A total of 67 COPD subjects (forced expiratory volume in the first second of expiration [FEV1]: 45%-80% predicted) and 63 healthy smoking and nonsmoking controls underwent multiple assessments including patient questionnaires, lung function, and clinical biomarkers including fractional exhaled nitric oxide (FENO), induced sputum, and blood...
2017: Biomarker Insights
https://www.readbyqxmd.com/read/28929906/the-important-role-of-primary-care-providers-in-the-detection-of-alpha-1-antitrypsin-deficiency
#12
Jorge E Lascano, Michael A Campos
OBJECTIVE: Alpha-1 antitrypsin deficiency (AATD) is an underrecognized genetic disorder that can cause chronic obstructive pulmonary disease (COPD) and liver cirrhosis, two clinical conditions commonly seen by primary care physicians. AATD is estimated to affect 1/4000-1/5000 people in the United States and 1-2% of all COPD cases. METHODS: PubMed was searched for relevant articles using AAT/AATD-related terms. RESULTS: Unfortunately, <10% of symptomatic individuals have been properly diagnosed primarily due to the underdiagnosis of COPD and the lack of awareness of AATD as a possible underlying cause...
October 5, 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28929109/genetic-variants-in-the-hedgehog-interacting-protein-gene-are-associated-with-the-fev1-fvc-ratio-in-southern-han-chinese-subjects-with-chronic-obstructive-pulmonary-disease
#13
Zili Zhang, Jian Wang, Zeguang Zheng, Xindong Chen, Xiansheng Zeng, Yi Zhang, Defu Li, Jiaze Shu, Kai Yang, Ning Lai, Lian Dong, Wenju Lu
BACKGROUND: Convincing evidences have demonstrated the associations between HHIP and FAM13a polymorphisms and COPD in non-Asian populations. Here genetic variants in HHIP and FAM13a were investigated in Southern Han Chinese COPD. METHODS: A case-control study was conducted, including 989 cases and 999 controls. The associations between SNPs genotypes and COPD were performed by a logistic regression model; for SNPs and COPD-related phenotypes such as lung function, COPD severity, pack-year of smoking, and smoking status, a linear regression model was employed...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28919731/sensitization-to-aspergillus-fumigatus-as-a-risk-factor-for-bronchiectasis-in-copd
#14
Stephanie Everaerts, Katrien Lagrou, Adriana Dubbeldam, Natalie Lorent, Kristina Vermeersch, Erna Van Hoeyveld, Xavier Bossuyt, Lieven J Dupont, Bart M Vanaudenaerde, Wim Janssens
BACKGROUND: Bronchiectasis-chronic obstructive pulmonary disease (COPD) overlap presents a possible clinical phenotype of COPD, but it is unclear why it develops in a subset of patients. We hypothesized that sensitization to Aspergillus fumigatus (A fum) is associated with bronchiectasis in COPD and occurs more frequently in vitamin D-deficient patients. METHODS: This observational study investigated sensitization to A fum in an outpatient clinical cohort of 300 COPD patients and 50 (ex-) smoking controls...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28915894/cardiovascular-risk-in-patients-with-alpha-1-antitrypsin-deficiency
#15
Sebastian Fähndrich, Frank Biertz, Annika Karch, Björn Kleibrink, Armin Koch, Helmut Teschler, Tobias Welte, Hans-Ulrich Kauczor, Sabina Janciauskiene, Rudolf A Jörres, Timm Greulich, Claus F Vogelmeier, Robert Bals
BACKGROUND: Alpha-1-antitrypsin deficiency (AATD) is a rare inherited condition caused by mutations of the SERPINA1 gene that is associated with the development of a COPD like lung disease. The comorbidities in patients with AATD-related lung diseases are not well defined. The aim of this study was to analyze the clinical phenotype of AATD patients within the German COPD cohort study COSYCONET ("COPD and SYstemic consequences-COmorbidities NETwork") cohort focusing on the distribution of comorbidities...
September 15, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28910816/mediastinal-and-subcutaneous-chest-fat-are-differentially-associated-with-emphysema-progression-and-clinical-outcomes-in-smokers
#16
Jon Grace, Joseph K Leader, Seyed M Nouraie, Jiantao Pu, Divay Chandra, Yingze Zhang, Frank C Sciurba, Jessica Bon
BACKGROUND: Studies have demonstrated both positive and negative effects of obesity on clinical outcomes in chronic obstructive pulmonary disease (COPD). In other chronic diseases, fat location is differentially associated with disease outcomes; however, this relationship has not been well studied in COPD. OBJECTIVE: To determine if fat location explains the differential association of body mass index (BMI) with clinical outcome measures in smokers. METHODS: Baseline and 6-year chest computed tomography scans from 68 current and former smokers were used to quantify mediastinal and subcutaneous fat...
September 15, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28906034/small-airway-disease-a-different-phenotype-of-early-stage-copd-associated-with-biomass-smoke-exposure
#17
Dongxing Zhao, Yumin Zhou, Changbin Jiang, Zhuxiang Zhao, Fang He, Pixin Ran
BACKGROUND AND OBJECTIVE: Chronic exposure to biomass smoke (BS) can significantly compromise pulmonary function and lead to chronic obstructive pulmonary disease (COPD). To determine whether BS exposure induces a unique phenotype of COPD from an early stage, with different physiopathological features compared with COPD associated with smoking (cigarette-smoke (CS) COPD), we assessed the physiopathology of early COPD associated with BS exposure (BS COPD) by incorporating spirometry, high-resolution computed tomography (HRCT) imaging, bronchoscopy and pathological examinations...
September 14, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28893134/mepolizumab-for-eosinophilic-chronic-obstructive-pulmonary-disease
#18
Ian D Pavord, Pascal Chanez, Gerard J Criner, Huib A M Kerstjens, Stephanie Korn, Njira Lugogo, Jean-Benoit Martinot, Hironori Sagara, Frank C Albers, Eric S Bradford, Stephanie S Harris, Bhabita Mayer, David B Rubin, Steven W Yancey, Frank C Sciurba
Background Patients with chronic obstructive pulmonary disease (COPD) with an eosinophilic phenotype may benefit from treatment with mepolizumab, a monoclonal antibody directed against interleukin-5. Methods We performed two phase 3, randomized, placebo-controlled, double-blind, parallel-group trials comparing mepolizumab (100 mg in METREX, 100 or 300 mg in METREO) with placebo, given as a subcutaneous injection every 4 weeks for 52 weeks in patients with COPD who had a history of moderate or severe exacerbations while taking inhaled glucocorticoid-based triple maintenance therapy...
September 11, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28891938/time-course-of-the-phenotype-of-blood-and-bone-marrow-monocytes-and-macrophages-in-the-lung-after-cigarette-smoke-exposure-in-vivo
#19
Camila Oliveira da Silva, Andréa Monte-Alto-Costa, Mariana Renovato-Martins, Filipe Jorge Viana Nascimento, Samuel Dos Santos Valença, Vincent Lagente, Luís Cristóvão Pôrto, Tatiana Victoni
Alveolar macrophages play a central role in the pathogenesis of chronic obstructive pulmonary disease (COPD). Monocytes are recruited from blood during inflammation and then mature into alveolar macrophages. The aim of this study was to investigate the effect of cigarette smoke (CS) at different times in lung macrophages and monocytes from blood and bone marrow in mice. Male mice (C57BL/6, n = 45) were divided into groups: control, CS 5 days, CS 14 days and CS 30 days. Five days' CS exposure induced a pronounced influx of neutrophils and macrophages in the lung associated with increased levels of keratinocyte chemoattractant (KC), tumor necrosis factor-α (TNF-α), nitric oxide (NO) and matrix metalloproteinase (MMP)-12...
September 9, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28872030/what-does-endotyping-mean-for-treatment-in-chronic-obstructive-pulmonary-disease
#20
REVIEW
Alvar Agustí, Bartolome Celli, Rosa Faner
Chronic obstructive pulmonary disease (COPD) is a complex and heterogeneous disease, both at the clinical and biological level. However, COPD is still diagnosed and treated according to simple clinical measures (level of airflow limitation, symptoms, and frequency of previous exacerbations). To address this clinical and biological complexity and to move towards precision medicine in COPD, we need to integrate (bioinformatics) and interpret (clinical science) the vast amount of high-throughput information that existing technology provides (systems biology and network medicine) so diagnosis, stratification, and treatment of patients with COPD can occur on the basis of their pathobiological mechanism (ie, endotypes)...
September 2, 2017: Lancet
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