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Asthma-COPD overlap

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https://www.readbyqxmd.com/read/29648520/transfer-coefficients-kco-better-reflect-emphysematous-changes-than-carbon-monoxide-diffusing-capacity-dlco-in-obstructive-lung-diseases
#1
Kaoruko Shimizu, Satoshi Konno, Hironi Makita, Hirokazu Kimura, Hiroki Kimura, Masaru Suzuki, Masaharu Nishimura
The overlap between asthma and chronic obstructive pulmonary disease (COPD) has attracted the interest of pulmonary physicians; thus, measurement of carbon monoxide diffusion capacity (DLco) and/or transfer coefficients (Kco, DLco/VA) may become valuable in clinical settings. How these parameters behave in chronic obstructive lung diseases is poorly understood. We predicted that Kco might more accurately reflect emphysematous changes in the lungs, than DLco. We examined DLco and Kco in non-smokers and smokers with asthma and investigated their relationships with forced expiratory volume in 1 s (%FEV1 ) by group...
April 12, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29627118/alveolar-and-bronchial-nitric-oxide-in-chronic-obstructive-pulmonary-disease-and-asthma-copd-overlap
#2
Bernardino Alcázar-Navarrete, Francisca Castellano Miñán, Pablo Santiago Díaz, Oliveiro Ruiz Rodríguez, Pedro J Romero Palacios
INTRODUCTION: Exhaled nitric oxide (FENO ) measurements differentiate COPD phenotypes from asthma-COPD overlap (ACO). To date, no study has been conducted to determine whether alveolar and bronchial components differ in this group of patients. METHODS: This was an observational cross-sectional study recruiting ambulatory COPD patients. FENO was measured, differentiating alveolar (CANO ) from bronchial (JawNO ) components using a multiple-flow technique. CANO and JawNO values were compared between eosinophilic COPD patients (defined as ≥ 300 eosinophils/μL in peripheral blood test, or ≥ 2% eosinophils or ≥ 3% eosinophils), and a linear regression analysis was performed to determine clinical and biological variables related to these measurements...
April 4, 2018: Archivos de Bronconeumología
https://www.readbyqxmd.com/read/29617436/correction-clinical-and-inflammatory-characteristics-of-asthma-copd-overlap-in-workers-with-occupational-asthma
#3
Iñigo Ojanguren, Gregory Moullec, Jad Hobeika, Marc Miravitlles, Catherine Lemiere
[This corrects the article DOI: 10.1371/journal.pone.0193144.].
2018: PloS One
https://www.readbyqxmd.com/read/29608582/asthma-and-copd-overlap-aco-is-related-to-a-high-burden-of-sleep-disturbance-and-respiratory-symptoms-results-from-the-rhine-and-swedish-ga2len-surveys
#4
Stephanie Mindus, Andrei Malinovschi, Linda Ekerljung, Bertil Forsberg, Thórarinn Gíslason, Rain Jõgi, Karl A Franklin, Mathias Holm, Ane Johannessen, Roelinde Middelveld, Vivi Schlünssen, Cecilie Svanes, Kjell Torén, Eva Lindberg, Christer Janson
BACKGROUND: The term Asthma and COPD Overlap (ACO) describes a condition where asthma and COPD overlap. We aimed to investigate associations between ACO and insomnia and respiratory symptoms, and to investigate the prevalence of ACO and the characteristics of subjects with ACO in two Northern European population studies. METHODS: The study comprised 25 429 subjects aged ≥ 40 years who participated in one of two Northern European general population surveys. Both surveys included questions on asthma, COPD, respiratory and sleep-related symptoms, including difficulty initiating sleep, difficulty maintaining sleep, early-morning awakening, and excessive daytime sleepiness...
2018: PloS One
https://www.readbyqxmd.com/read/29588581/maintenance-inhaler-preference-attribute-importance-and-satisfaction-in-prescribing-physicians-and-patients-with-asthma-copd-or-asthma-copd-overlap-syndrome-consulting-for-routine-care
#5
Bo Ding, Mark Small, Gina Scheffel, Ulf Holmgren
Background: In respiratory disorders, patient- and physician-perceived satisfaction with the maintenance inhaler device is an important factor driving treatment compliance and outcomes. We examine inhaler preferences in asthma and COPD from patient and physician perspectives, particularly focusing on the relative importance of individual device attributes and patient characteristics guiding inhaler choice. Materials and methods: Real-world data from >7,300 patients with asthma, COPD, or asthma-COPD overlap syndrome (ACOS) consulting for routine care were derived from respiratory Disease Specific Programs conducted in Europe, USA, Japan, and China...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29580282/plasma-ykl-40-and-ngal-are-useful-in-distinguishing-aco-from-asthma-and-copd
#6
Jing Wang, Huajie Lv, Zhuang Luo, Shan Mou, Jing Liu, Chang Liu, Shiying Deng, Youfan Jiang, Jiachen Lin, Chengzhou Wu, Xianhong Liu, Jinzhi He, Depeng Jiang
BACKGROUND: Asthma-chronic obstructive pulmonary disorder (COPD) overlap (ACO) is characterized by the coexistence of features of both asthma and COPD and is associated with rapid progress and a poor prognosis. Thus, the early recognition of ACO is crucial. OBJECTIVES: We sought to explore the plasma levels of biomarkers associated with asthma (periostin, TSLP and YKL-40), COPD (NGAL) and their possible correlation with lung function, the bronchodilator response and radiographic imaging in patients with asthma, COPD and with features of ACO...
March 27, 2018: Respiratory Research
https://www.readbyqxmd.com/read/29559773/use-of-clinical-characteristics-to-predict-spirometric-classification-of-obstructive-lung-disease
#7
Steven J Pascoe, Wei Wu, Kathryn A Collison, Linda M Nelsen, Keele E Wurst, Laurie A Lee
Background: There is no consensus on how to define patients with symptoms of asthma and chronic obstructive pulmonary disease (COPD). A diagnosis of asthma-COPD overlap (ACO) syndrome has been proposed, but its value is debated. This study (GSK Study 201703 [NCT02302417]) investigated the ability of statistical modeling approaches to define distinct disease groups in patients with obstructive lung disease (OLD) using medical history and spirometric data. Methods: Patients aged ≥18 years with diagnoses of asthma and/or COPD were categorized into three groups: 1) asthma (nonobstructive; reversible), 2) ACO (obstructive; reversible), and 3) COPD (obstructive; nonreversible)...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29558236/demographic-and-clinical-characteristics-of-copd-patients-at-different-blood-eosinophil-levels-in-the-uk-clinical-practice-research-datalink
#8
Sarah Landis, Robert Suruki, Joe Maskell, Kerina Bonar, Emma Hilton, Chris Compton
Blood eosinophil count may be a useful biomarker for predicting response to inhaled corticosteroids and exacerbation risk in chronic obstructive pulmonary disease (COPD) patients. The optimal cut point for categorizing blood eosinophil counts in these contexts remains unclear. We aimed to determine the distribution of blood eosinophil count in COPD patients and matched non-COPD controls, and to describe demographic and clinical characteristics at different cut points. We identified COPD patients within the UK Clinical Practice Research Database aged ≥40 years with a FEV1 /FVC <0...
March 20, 2018: COPD
https://www.readbyqxmd.com/read/29551279/epidemiology-of-asthma-chronic-obstructive-pulmonary-disease-overlap-aco
#9
REVIEW
Akifumi Uchida, Kohta Sakaue, Hiromasa Inoue
The term "asthma-COPD overlap" (ACO) has been applied to the condition in which a person has persistent airflow limitation with clinical features of both asthma and COPD. The certain definition and diagnostic criteria for ACO have not yet been established, and ACO prevalence has varied widely in studies: from 0.9% to 11.1% in the general population, from 11.1% to 61.0% in asthma patients, and from 4.2% to 66.0% in COPD patients. Furthermore, the frequency of exacerbations and prognosis in ACO patients have not been clearly demonstrated...
March 15, 2018: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/29550368/asthma-and-copd-overlap-pathophysiology-of-aco
#10
REVIEW
Mari Hikichi, Shu Hashimoto, Yasuhiro Gon
Asthma and COPD appear as a result of different mechanisms triggered by different pathogeneses and although they present different features and symptoms of airway inflammation and airway obstruction, there are also cases that present the features of both asthma and COPD. This type of pathology is known as asthma-COPD overlap syndrome (ACOS). Asthma-COPD overlap is identified in clinical practice by the features that it shares with both asthma and COPD. This is not a definition, but a description for clinical use, as asthma-COPD overlap includes several different clinical phenotypes and there are likely to be several different underlying mechanisms"...
March 14, 2018: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/29527840/increased-risk-of-exacerbation-in-asthma-predominant-asthma-chronic-obstructive-pulmonary-disease-overlap-syndrome
#11
Jisoo Park, Eun Kyung Kim, Mi Ae Kim, Tae Hyung Kim, Jung Hyun Chang, Yon Ju Ryu, Sei Won Lee, Yeon Mok Oh, Suk Joong Yong, Won Il Choi, Kwang Ha Yoo, Ji Hyun Lee
BACKGROUND: Obstructive airway disease patients with increased variability of airflow and incompletely reversible airflow obstruction are often categorized as having asthma-chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS). ACOS is heterogeneous with two sub-phenotypes: asthma-ACOS and COPD-ACOS. The objective of this study was to determine the difference in risk of exacerbation between the two sub-phenotypes of ACOS. METHODS: A total of 223 patients exhibiting incompletely reversible airflow obstruction with increased variability (spirometrically defined ACOS) were enrolled...
March 7, 2018: Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/29524387/considerations-for-the-correct-diagnosis-of-copd-and-its-management-with-bronchodilators
#12
Antonio Anzueto, Marc Miravitlles
COPD is often misdiagnosed and inappropriately treated in many patients. COPD is a distinct disease from adult-onset asthma; however, some patients with COPD may present with several forms of airway disease described as asthma-COPD overlap (ACO). Bronchodilators and inhaled corticosteroids (ICS) both have a place in standard maintenance treatment of COPD and asthma; however, recommendations for use differ widely. In patients with COPD, long-acting bronchodilators are effective initial monotherapy treatment, whereas ICS monotherapy is recommended as initial treatment in patients with asthma...
March 8, 2018: Chest
https://www.readbyqxmd.com/read/29499758/favorable-longitudinal-change-of-lung-function-in-patients-with-asthma-copd-overlap-from-a-copd-cohort
#13
Hye Yun Park, Suh-Young Lee, Danbee Kang, Juhee Cho, Hyun Lee, Seong Yong Lim, Ho Il Yoon, Seung Won Ra, Ki Uk Kim, Yeon-Mok Oh, Don D Sin, Sang-Do Lee, Yong Bum Park
BACKGROUND: The recognition of asthma-chronic obstructive pulmonary disease (COPD) overlap (ACO) as a distinct phenotype of COPD or asthma has increased. Although ACO has worse clinical features than non-ACO COPD, limited information is available on long-term outcomes of lung function decline for ACO and non-ACO COPD. METHODS: COPD patients with at least 3 years of follow-up were selected from the Korean Obstructive Lung Disease cohort. ACO was defined based on 3 major criteria: 1) airflow limitation in individuals 40 years of age and older, 2) ≥10 pack-years of smoking history, and 3) a history of asthma or bronchodilator response of > 400 mL in forced expiratory volume in 1 s (FEV1 ) at baseline; and at least 1 minor criterion: 1) history of atopy or allergic rhinitis, 2) two separated bronchodilator responses of ≥12% and 200 mL in FEV1 , or 3) peripheral blood eosinophils ≥300 cells/μL...
March 2, 2018: Respiratory Research
https://www.readbyqxmd.com/read/29499062/clinical-and-inflammatory-characteristics-of-asthma-copd-overlap-in-workers-with-occupational-asthma
#14
Iñigo Ojanguren, Gregory Moullec, Jad Hobeika, Marc Miravitlles, Catherine Lemiere
INTRODUCTION: Although Asthma-COPD Overlap (ACO) has been described among populations of subjects with COPD or asthma, ACO has never been described among a population of subjects with occupational asthma (OA). OBJECTIVES: The aims of this study were to: 1. identify ACO in a population of subjects with OA; and 2. compare the clinical characteristics between ACO and OA. METHODS: This retrospective study included all subjects diagnosed with OA between 2000 and 2017 in an OA referral center...
2018: PloS One
https://www.readbyqxmd.com/read/29487249/predictors-of-asthma-chronic-obstructive-pulmonary-disease-overlap-syndrome-in-patients-with-chronic-obstructive-pulmonary-disease-from-a-tertiary-care-center-in-india
#15
Irfan Ismail Ayub, Abdul Majeed Arshad, Prathipa Sekar, Natraj Manimaran, Dhanasekar Thangaswamy, Chandrasekar Chockalingam
Background: There is dearth of literature on asthma-chronic obstructive pulmonary disease overlap syndrome (ACOS) in India. The aim was to compare clinical characteristics between patients with ACOS and non-ACOS COPD and to identify clinical predictors of ACOS in patients with COPD. Methods: We conducted a retrospective study by reviewing data collected from patients performing spirometry at our hospital. Those with postbronchodilator FEV1 /FVC <70% were included in the study...
March 2018: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/29483774/mixed-th2-and-non-th2-inflammatory-pattern-in-the-asthma-copd-overlap-a-network-approach
#16
Luis Pérez de Llano, Borja G Cosío, Amanda Iglesias, Natividad de Las Cuevas, Juan Jose Soler-Cataluña, Jose Luis Izquierdo, Jose Luis López-Campos, Carmen Calero, Vicente Plaza, Marc Miravitlles, Alfons Torrego, Eva Martinez-Moragon, Joan B Soriano, Antolin Lopez Viña, Irina Bobolea
Introduction: The asthma-chronic obstructive pulmonary disease (COPD) overlap (ACO) is a clinical condition that combines features of those two diseases, and that is difficult to define due to the lack of understanding of the underlying mechanisms. Determining systemic mediators may help clarify the nature of inflammation in patients with ACO. Objectives: We aimed at investigating the role and interaction of common markers of systemic inflammation (IL-6, IL-8, and tumor necrosis factor-α), Th2-related markers (periostin, IL-5, and IL-13), and IL-17 in asthma, COPD, and ACO...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29463430/the-post-truth-behind-the-asthma-copd-overlap-and-the-orbit-of-mercury-lessons-from-the-chacos-study
#17
Luis Pérez de Llano, Jose Luis López-Campos, Borja G Cosío
No abstract text is available yet for this article.
February 17, 2018: Archivos de Bronconeumología
https://www.readbyqxmd.com/read/29433946/definition-and-diagnosis-of-asthma-copd-overlap-aco
#18
REVIEW
Satoru Yanagisawa, Masakazu Ichinose
It is now widely recognized that asthma and COPD can coexist as asthma-COPD overlap (ACO), but the preliminary attempts at providing universal guidelines for the diagnosis of ACO still need to be improved. We believe that a case can be made for devising guidelines for the diagnosis of this increasingly common disease that are specific to Japan. In this paper, we present our consensus-based description of ACO which we believe is realistic for use in our country. In addition, we cite the scientific evidence for our own "objective" features used to develop the criteria for COPD and asthma diagnosis...
February 9, 2018: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/29432960/use-of-ics-laba-combinations-or-lama-is-associated-with-a-lower-risk-of-acute-exacerbation-in-patients-with-coexistent-copd-and-asthma
#19
Vincent Yi-Fong Su, Kuang-Yao Yang, Yao-Hsu Yang, Ying-Huang Tsai, Diahn-Warng Perng, Wei-Juin Su, Kun-Ta Chou, Kang-Cheng Su, Yung-Feng Yen, Pau-Chung Chen
BACKGROUND: Based on current guidelines, more research is urgently needed to guide appropriate treatment for patients with asthma-chronic obstructive pulmonary disease (COPD) overlap. OBJECTIVE: The objective of this study was to investigate medication effects on acute exacerbation in patients with coexistent COPD and asthma. METHODS: Using Taiwan's National Health Insurance Research Database, we conducted a nationwide population-based study to evaluate medication effects in patients with COPD and asthma...
February 10, 2018: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/29420087/prevalence-and-features-of-asthma-chronic-obstructive-pulmonary-disease-overlap-in-northern-italy-general-population
#20
Massimo Guerriero, Marco Caminati, Giovanni Viegi, Gianenrico Senna, Carlo Pomari
OBJECTIVE: There is controversy about the diagnostic criteria, prevalence, symptoms, and spirometry characteristics of asthma-chronic obstructive pulmonary disease (COPD) overlap (ACO). Recent data indicate that the fixed method for diagnosing airway obstruction (AO) may overestimate ACO prevalence in the elderly, and a variable method may be more accurate. We aimed at estimating ACO prevalence in a general population sample and comparing patient and clinical features in subjects with ACO, COPD, and asthma...
February 8, 2018: Journal of Asthma: Official Journal of the Association for the Care of Asthma
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