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Copd phenotype

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https://www.readbyqxmd.com/read/28546748/bronchiectasis-in-copd-patients-more-than-a-comorbidity
#1
Miguel Angel Martinez-Garcia, Marc Miravitlles
Computed tomography scan images have been used to identify different radiological COPD phenotypes based on the presence and severity of emphysema, bronchial wall thickening, and bronchiectasis. Bronchiectasis is defined as an abnormal dilation of the bronchi, usually as a result of chronic airway inflammation and/or infection. The prevalence of bronchiectasis in patients with COPD is high, especially in advanced stages. The identification of bronchiectasis in COPD has been defined as a different clinical COPD phenotype with greater symptomatic severity, more frequent chronic bronchial infection and exacerbations, and poor prognosis...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28546273/mir-146a-5p-plays-an-essential-role-in-the-aberrant-epithelial-fibroblast-cross-talk-in-copd
#2
Emmanuel T Osei, Laura Florez-Sampedro, Hataitip Tasena, Alen Faiz, Jacobien A Noordhoek, Wim Timens, Dirkje S Postma, Tillie L Hackett, Irene H Heijink, Corry-Anke Brandsma
We previously reported that epithelial-derived interleukin (IL)-1α drives fibroblast-derived inflammation in the lung epithelial-mesenchymal trophic unit. Since miR-146a-5p has been shown to negatively regulate IL-1 signalling, we investigated the role of miR-146a-5p in the regulation of IL-1α-driven inflammation in chronic obstructive pulmonary disease (COPD).Human bronchial epithelial (16HBE14o-) cells were co-cultured with control and COPD-derived primary human lung fibroblasts (PHLFs), and miR-146a-5p expression was assessed with and without IL-1α neutralising antibody...
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28532454/proteomic-profiling-of-peripheral-blood-neutrophils-identifies-two-inflammatory-phenotypes-in-stable-copd-patients
#3
Adèle Lo Tam Loi, Susan Hoonhorst, Corneli van Aalst, Jeroen Langereis, Vera Kamp, Simone Sluis-Eising, Nick Ten Hacken, Jan-Willem Lammers, Leo Koenderman
BACKGROUND: COPD is a heterogeneous chronic inflammatory disease of the airways and it is well accepted that the GOLD classification does not fully represent the complex clinical manifestations of COPD and this classification therefore is not well suited for phenotyping of individual patients with COPD. Besides the chronic inflammation in the lung compartment, there is also a systemic inflammation present in COPD patients. This systemic inflammation is associated with elevated levels of cytokines in the peripheral blood, but the precise composition is unknown...
May 22, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28505167/relationship-of-hyperlipidemia-to-comorbidities-and-lung-function-in-copd-results-of-the-cosyconet-cohort
#4
Kathrin Kahnert, Tanja Lucke, Rudolf M Huber, Jürgen Behr, Frank Biertz, Anja Vogt, Henrik Watz, Peter Alter, Sebastian Fähndrich, Robert Bals, Rolf Holle, Stefan Karrasch, Sandra Söhler, Margarethe Wacker, Joachim H Ficker, Klaus G Parhofer, Claus Vogelmeier, Rudolf A Jörres
Although hyperlipidemia is common in COPD, its relationship to comorbidities, risk factors and lung function in COPD has not been studied in detail. Using the baseline data of the COSYCONET cohort we addressed this question. Data from 1746 COPD patients (GOLD stage 1-4; mean age 64.6 y, mean FEV1%pred 57%) were evaluated, focusing on the comorbidities hyperlipidemia, diabetes and cardiovascular complex (CVC; including arterial hypertension, cardiac failure, ischemic heart disease). Risk factors comprised age, gender, BMI, and packyears of smoking...
2017: PloS One
https://www.readbyqxmd.com/read/28502414/acute-bronchodilator-responses-to-%C3%AE-2-agonist-and-anticholinergic-agent-in-copd-their-different-associations-with-exacerbation
#5
Satoshi Konno, Hironi Makita, Masaru Suzuki, Kaoruko Shimizu, Hirokazu Kimura, Hiroki Kimura, Masaharu Nishimura
BACKGROUND: Acute bronchodilator response (BDR) is a potential phenotypic characteristic of COPD. However, the clinical factors associated with BDR in patients with COPD remain unclear, particularly for BDR to anticholinergic agents. OBJECTIVES: We aimed to clarify the clinical factors associated with BDR to β2-agonist and/or anticholinergic agent, considering time-associated variations of BDR. We also evaluated the association between BDR and clinical course of COPD...
June 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28495687/phenotypes-of-copd-patients-with-a-smoking-history-in-central-and-eastern-europe-the-pope-study
#6
Vladimir Koblizek, Branislava Milenkovic, Adam Barczyk, Ruzena Tkacova, Attila Somfay, Kirill Zykov, Neven Tudoric, Kosta Kostov, Zuzana Zbozinkova, Jan Svancara, Jurij Sorli, Alvils Krams, Marc Miravitlles, Arschang Valipour
Chronic obstructive pulmonary disease (COPD) represents a major health problem in Central and Eastern European (CEE) countries; however, there are no data regarding clinical phenotypes of these patients in this region.Participation in the Phenotypes of COPD in Central and Eastern Europe (POPE) study was offered to stable patients with COPD in a real-life setting. The primary aim of this study was to assess the prevalence of phenotypes according to predefined criteria. Secondary aims included analysis of differences in symptom load, comorbidities and pharmacological treatment...
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28494859/hiv-reprograms-human-airway-basal-stem-progenitor-cells-to-acquire-a-tissue-destructive-phenotype
#7
Nancy P Y Chung, Xuemei Ou, K M Faisal Khan, Jacqueline Salit, Robert J Kaner, Ronald G Crystal
While highly active anti-retroviral therapy has dramatically improved the survival of HIV-infected individuals, there is an increased risk for other co-morbidities, such as COPD, manifesting as emphysema. Given that emphysema originates around the airways and that human airway basal cells (BCs) are adult airway stem/progenitor cells, we hypothesized that HIV reprograms BCs to a distinct phenotype that contributes to the development of emphysema. Our data indicate that HIV binds to but does not replicate in BCs...
May 9, 2017: Cell Reports
https://www.readbyqxmd.com/read/28492127/obstructive-pulmonary-disease-in-patients-with-previous-tuberculosis-pathophysiology-of-a-community-based-cohort
#8
Brian W Allwood, Rencia Gillespie, Maya Galperin-Aizenberg, Mary Bateman, Helena Olckers, Luis Taborda-Barata, Gregory L Calligaro, Qonita Said-Hartley, Richard Van Zyl-Smit, Christopher B Cooper, Eva Van Rikxoort, Jonathan Goldin, Nulda Beyers, Eric D Bateman
BACKGROUND: An association between chronic airflow limitation (CAL) and a history of pulmonary tuberculosis (PTB) has been confirmed in epidemiological studies, but the mechanisms responsible for this association are unclear. It is debated whether CAL in this context should be viewed as chronic obstructive pulmonary disease (COPD) or a separate phenotype. OBJECTIVE: To compare lung physiology and high-resolution computed tomography (HRCT) findings in subjects with CAL and evidence of previous (healed) PTB with those in subjects with smoking-related COPD without evidence of previous PTB...
April 25, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/28490872/correlation-between-fractional-exhaled-nitric-oxide-and-sputum-eosinophilia-in-exacerbations-of-copd
#9
Jie Gao, Min Zhang, Liqin Zhou, Xing Yang, Haigui Wu, Jianfang Zhang, Feng Wu
INTRODUCTION: Measurements of eosinophils in induced sputum and fractional exhaled nitric oxide (FeNO) are noninvasive biomarkers for assessing airway inflammation phenotypes in chronic obstructive pulmonary disease (COPD). Nevertheless, the clinical application of the correlation between FeNO levels and sputum eosinophilia is controversial. The study aimed to investigate the correlation and predictive relationship between FeNO levels and sputum eosinophils in patients with COPD exacerbation...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28476471/elevated-levels-of-circulating-exosome-in-copd-patients-are-associated-with-systemic-inflammation
#10
Dino B A Tan, Jesse Armitage, Teck-Hui Teo, Nathanael E Ong, Heewoong Shin, Yuben P Moodley
Chronic obstructive pulmonary disease (COPD) is characterized by progressive pulmonary and systemic inflammation. Acute exacerbations of COPD (AECOPD) are associated with acute inflammation and infections and increase the rates of morbidity and mortality. Currently, neither the aetiology nor pathogenesis of AECOPD are entirely understood. Exosomes have been reported to regulate immunity and inflammation via specific intercellular communications through an array of macromolecules (e.g. microRNA and proteins) contained within these microvesicles...
April 26, 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28469720/a-study-of-chronic-obstructive-pulmonary-disease-specific-causes-of-osteoporosis-with-emphasis-on-the-emphysema-phenotype
#11
Mona Ali Fouda, Esam Hamad Alhamad, Mohammed Saleh Al-Hajjaj, Shaffi Ahmed Shaik, Ahmad Amer Alboukai, Feisal Abdulla Al-Kassimi
BACKGROUND: Osteoporosis, the most common extra-pulmonary complication of chronic obstructive pulmonary disease (COPD), may be related to general causes or COPD-specific causes such as low forced expiratory volume in 1 s (FEV1) and hypoxia. A few studies reported that emphysema is an independent risk factor for osteoporosis. However, other workers considered the association to be confounded by low FEV1 and low body mass index (BMI) which cluster with emphysema. AIMS: To study the association between osteoporosis and emphysema in a model that includes these potentially confounding factors...
April 2017: Annals of Thoracic Medicine
https://www.readbyqxmd.com/read/28468623/acute-cigarette-smoke-exposure-activates-apoptotic-and-inflammatory-programs-but-a-second-stimulus-is-required-to-induce-epithelial-to-mesenchymal-transition-in-copd-epithelium
#12
Lynne A Murray, Rebecca Dunmore, Ana Camelo, Carla A Da Silva, Malin J Gustavsson, David M Habiel, Tillie L Hackett, Cory M Hogaboam, Matthew A Sleeman, Darryl A Knight
BACKGROUND: Smoking and aberrant epithelial responses are risk factors for lung cancer as well as chronic obstructive pulmonary disease and idiopathic pulmonary fibrosis. In these conditions, disease progression is associated with epithelial damage and fragility, airway remodelling and sub-epithelial fibrosis. The aim of this study was to assess the acute effects of cigarette smoke on epithelial cell phenotype and pro-fibrotic responses in vitro and in vivo. RESULTS: Apoptosis was significantly greater in unstimulated cells from COPD patients compared to control, but proliferation and CXCL8 release were not different...
May 3, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28464818/sulfatase-modifying-factor-1-sumf1-is-associated-with-chronic-obstructive-pulmonary-disease
#13
Julie Weidner, Linnea Jarenbäck, Kim de Jong, Judith M Vonk, Maarten van den Berge, Corry-Anke Brandsma, H Marike Boezen, Don Sin, Yohan Bossé, David Nickle, Jaro Ankerst, Leif Bjermer, Dirkje S Postma, Alen Faiz, Ellen Tufvesson
BACKGROUND: It has been observed that mice lacking the sulfatase modifying factor (Sumf1) developed an emphysema-like phenotype. However, it is unknown if SUMF1 may play a role in Chronic Obstructive Pulmonary Disease (COPD) in humans. The aim was to investigate if the expression and genetic regulation of SUMF1 differs between smokers with and without COPD. METHODS: SUMF1 mRNA was investigated in sputum cells and whole blood from controls and COPD patients (all current or former smokers)...
May 2, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28461294/asthma-and-smoking-induced-airway-disease-without-spirometric-copd
#14
REVIEW
Neil C Thomson
Due to the high prevalence rates of cigarette smoking and asthma, current and ex-smokers frequently develop chronic airway disease without spirometric evidence of chronic obstructive pulmonary disease (COPD), either alone or associated with asthma. This review considers the classification, clinical outcomes, inflammatory and imaging variables, phenotypes, and management of current and ex-smokers with airway disease without COPD, focusing on overlaps in those with and without asthma. These individuals have more respiratory symptoms, worse quality of life, increased exacerbation rates, reduced lung function and more comorbidities than never-smokers with asthma or healthy never-smokers...
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28461292/defining-asthma-copd-overlap-syndrome-a-population-based-study
#15
Tobias N Bonten, Marise J Kasteleyn, Renee de Mutsert, Pieter S Hiemstra, Frits R Rosendaal, Niels H Chavannes, Annelies M Slats, Christian Taube
Asthma-chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS) seems an important clinical phenotype, but multiple definitions have been proposed. This study's objectives were to assess the effect of different ACOS definitions on prevalence, patient characteristics and exacerbations.5675 individuals aged 45-65 years, with 846 asthma/COPD patients, were included in the Netherlands Epidemiology of Obesity study between 2008 and 2012, and followed-up for a median of 1.8 years. ACOS was defined by recent consensus criteria and five other definitions, based on registry, questionnaires and lung function...
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28459623/chronic-obstructive-pulmonary-disease-and-the-risk-of-stroke
#16
Ann D Morgan, Chetna Sharma, Kieran J Rothnie, James Potts, Liam Smeeth, Jennifer K Quint
RATIONALE: Chronic obstructive pulmonary disease (COPD) has been identified as a risk factor for cardiovascular diseases such as myocardial infarction. The role of COPD in cerebrovascular disease is, however, less certain. Although earlier studies have suggested that the risk for stroke is also increased in COPD, more recent investigations have generated mixed results. OBJECTIVES: The primary objective of our review was to quantify the magnitude of the association between COPD and stroke...
May 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28455714/macrophage-dysfunction-in-respiratory-disease
#17
Kylie B R Belchamber, Louise E Donnelly
In the healthy lung, macrophages maintain homeostasis by clearing inhaled particles, bacteria, and removing apoptotic cells from the local pulmonary environment. However, in respiratory diseases including chronic obstructive pulmonary disease (COPD), asthma, and cystic fibrosis, macrophages appear to be dysfunctional and may contribute to disease pathogenesis. In COPD, phagocytosis of bacterial species and apoptotic cells by both alveolar macrophages and monocyte-derived macrophages is significantly reduced, leading to colonization of the lung with pathogenic bacteria...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/28442310/copd-osa-overlap-syndrome-evolving-evidence-regarding-epidemiology-clinical-consequences-and-management
#18
REVIEW
Walter T McNicholas
Chronic obstructive pulmonary disease (COPD) and obstructive sleep apnea syndrome (OSA) are both highly prevalent, which implies that both disorders occurring together (overlap syndrome) is likely to be common based on chance association alone. However, different clinical COPD phenotypes influence the likelihood of co-existing OSA in that the increased lung volumes and low body mass index (BMI) associated with the predominant emphysema phenotype protects against OSA, whereas the higher likelihood of peripheral edema and increased BMI associated with the predominant chronic bronchitis phenotype promotes OSA...
April 22, 2017: Chest
https://www.readbyqxmd.com/read/28441029/variable-susceptibility-to-cigarette-smoke-induced-emphysema-in-34-inbred-strains-of-mice-implicates-abi3bp-in-emphysema-susceptibility
#19
Josiah E Radder, Alyssa D Gregory, Adriana S Leme, Michael H Cho, Yanxia Chu, Neil J Kelly, Per Bakke, Amund Gulsvik, Augusto A Litonjua, David Sparrow, Terri H Beaty, James D Crapo, Edwin K Silverman, Yingze Zhang, Annerose Berndt, Steven D Shapiro
RATIONALE: Chronic obstructive pulmonary disease (COPD) is caused by a complex interaction of environmental exposures, most commonly cigarette smoke, and genetic factors. Chronic cigarette smoke exposure in the mouse is a commonly used animal model of COPD. We aimed to expand our knowledge of the variable susceptibility of inbred strains to this model and test for genetic variants associated with this trait. OBJECTIVE: To measure differential susceptibility to cigarette smoke-induced emphysema in the mouse, identify genetic loci associated with this quantitative trait, and find homologous human genes associated with COPD...
April 25, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28431499/asthma-copd-overlap-syndrome-acos-in-primary-care-of-four-latin-america-countries-the-puma-study
#20
Maria Montes de Oca, Maria Victorina Lopez Varela, Maria E Laucho-Contreras, Alejandro Casas, Eduardo Schiavi, Juan Carlos Mora
BACKGROUND: Asthma-COPD overlap syndrome (ACOS) prevalence varies depending on the studied population and definition criteria. The prevalence and clinical characteristics of ACOS in an at-risk COPD primary care population from Latin America was assessed. METHODS: Patients ≥40 years, current/ex-smokers and/or exposed to biomass, attending routine primary care visits completed a questionnaire and performed spirometry. COPD was defined as post-bronchodilator forced expiratory volume in 1 s/forced vital capacity (FEV1/FVC) < 0...
April 21, 2017: BMC Pulmonary Medicine
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