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https://www.readbyqxmd.com/read/28906034/small-airway-disease-a-different-phenotype-of-early-stage-copd-associated-with-biomass-smoke-exposure
#1
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/28899522/actigraphy-scoring-for-sleep-outcome-measures-in-chronic-obstructive-pulmonary-disease
#2
Mary C Kapella, Sachin Vispute, Bingqian Zhu, James J Herdegen
BACKGROUND: Actigraphy is commonly used to measure sleep outcomes so that sleep can be measured conveniently at home over multiple nights. Actigraphy has been validated in people with sleep disturbances; however, the validity of scoring settings in people with chronic medical illnesses such as chronic obstructive pulmonary disease remains unclear. The purpose of this secondary analysis was to compare actigraphy-customized scoring settings with polysomnography (PSG) for the measurement of sleep outcomes in people with chronic obstructive pulmonary disease who have insomnia...
September 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28886252/total-airway-count-on-computed-tomography-and-the-risk-of-copd-progression-findings-from-a-population-based-study
#3
Miranda Kirby, Naoya Tanabe, Wan C Tan, Guohai Zhou, Ma'en Obeidat, Cameron J Hague, Jonathon Leipsic, Jean Bourbeau, Don D Sin, James C Hogg, Harvey O Coxson
RATIONALE: Studies of excised lungs show that significant airway attrition in the 'quiet' zone occurs early in chronic obstructive pulmonary disease (COPD). OBJECTIVES: To determine if the total number of airways quantified in vivo using computed tomography (CT) reflects early airway-related disease changes and is associated with lung-function decline independent of emphysema in COPD. METHODS: Participants in the multi-centre, population-based, longitudinal CanCOLD study underwent inspiratory/expiratory CT at visit-1; spirometry was performed at four visits over 6-years...
September 8, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28883532/patterns-of-oxygen-pulse-curve-in-response-to-incremental-exercise-in-patients-with-chronic-obstructive-pulmonary-disease-an-observational-study
#4
Ming-Lung Chuang, I-Feng Lin, Shih-Feng Huang, Meng-Jer Hsieh
In COPD, pulmonary hyperinflation causes decreased stroke volume thereby decreased oxygen pulse (O2P). While O2P flattening is related to myocardial ischemia in cardiac patients, O2P patterns have seldom been explored in COPD. The aims of the study were to investigate O2P-curve patterns and associated factors in COPD. Seventy-five patients with stable COPD were enrolled. The demographics, cardiac size, physiological measurements and stress EKG were compared among O2P-curve pattern groups. An algorithm to identify O2P-curve patterns was developed in 28 patients...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28878693/brain-activation-during-perception-and-anticipation-of-dyspnea-in-chronic-obstructive-pulmonary-disease
#5
Roland W Esser, Maria C Stoeckel, Anne Kirsten, Henrik Watz, Karin Taube, Kirsten Lehmann, Helgo Magnussen, Christian Büchel, Andreas von Leupoldt
Background: Dyspnea is the impairing cardinal symptom in COPD, but the underlying brain mechanisms and their relationships to clinical patient characteristics are widely unknown. This study compared neural responses to the perception and anticipation of dyspnea between patients with stable moderate-to-severe COPD and healthy controls. Moreover, associations between COPD-specific brain activation and clinical patient characteristics were examined. Methods: During functional magnetic resonance imaging, dyspnea was induced in patients with stable moderate-to-severe COPD (n = 17) and healthy control subjects (n = 21) by resistive-loaded breathing...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28877027/tiotropium-in-early-stage-chronic-obstructive-pulmonary-disease
#6
Yumin Zhou, Nan-Shan Zhong, Xiaochen Li, Shuyun Chen, Jinping Zheng, Dongxing Zhao, Weimin Yao, Rongchang Zhi, Liping Wei, Bingwen He, Xiangyan Zhang, Changli Yang, Ying Li, Fenglei Li, Juan Du, Jianping Gui, Bin Hu, Chunxue Bai, Ping Huang, Gang Chen, Yongjian Xu, Changzheng Wang, Biao Liang, Yinhuan Li, Guoping Hu, Hui Tan, Xianwei Ye, Xitao Ma, Yan Chen, Xiwei Hu, Jia Tian, Xiaodan Zhu, Zhe Shi, Xiufang Du, Minjing Li, Shengming Liu, Ronghuan Yu, Jianping Zhao, Qianli Ma, Canmao Xie, Xiongbin Li, Tao Chen, Yingxiang Lin, Lizhen Zeng, Changxiu Ye, Weishu Ye, Xiangwen Luo, Lingshan Zeng, Shuqing Yu, Wei-Jie Guan, Pixin Ran
BACKGROUND: Patients with mild or moderate chronic obstructive pulmonary disease (COPD) rarely receive medications, because they have few symptoms. We hypothesized that long-term use of tiotropium would improve lung function and ameliorate the decline in lung function in patients with mild or moderate COPD. METHODS: In a multicenter, randomized, double-blind, placebo-controlled trial that was conducted in China, we randomly assigned 841 patients with COPD of Global Initiative for Chronic Obstructive Lung Disease (GOLD) stage 1 (mild) or 2 (moderate) severity to receive a once-daily inhaled dose (18 μg) of tiotropium (419 patients) or matching placebo (422) for 2 years...
September 7, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28864214/microrna-218-acts-by-repressing-tnfr1-mediated-activation-of-nf-%C3%AE%C2%BAb-which-is-involved-in-muc5ac-hyper-production-and-inflammation-in-smoking-induced-bronchiolitis-of-copd
#7
Hui Xu, Qian Sun, Lu Lu, Fei Luo, Liang Zhou, Jianping Liu, Lei Cao, Qiushi Wang, Junchao Xue, Qianlei Yang, Ping Yang, Jiachun Lu, Quanyong Xiang, Qizhan Liu
Dysregulation of microRNAs (miRNAs) has been implicated in the pathogenesis of chronic obstructive pulmonary disease (COPD), which is largely attributable to cigarette smoke (CS). However, little is known about the effect of miRNAs on CS-induced mucus hypersecretion and the inflammatory response in the airway epithelium, which are pathological characteristics of COPD-related chronic bronchiolitis. As determined in the present investigation, population-based data indicate that smokers with COPD had serious airflow obstruction and inflammation, whereas smokers without COPD had mild airflow obstruction and inflammation...
August 31, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28851860/a-qualitative-study-of-gp-nurse-and-practice-manager-views-on-using-targeted-case-finding-to-identify-patients-with-copd-in-primary-care
#8
Rachael H Summers, Taniya Sharmeen, Kate Lippiett, Kate Gillett, Carla Astles, Linh Vu, Mark Stafford-Watson, Anne Bruton, Mike Thomas, Tom Wilkinson
'Finding the missing millions' with chronic obstructive pulmonary disease became part of the Department of Health strategy for England in 2010. Targeted case-finding within primary care is one potential pro-active strategy, but currently little is known about the views of healthcare professionals on this approach. In this study, 36 healthcare professionals (12 GPs, 14 nurses, and 10 practice managers) from 34 UK practices participated in semi-structured telephone interviews about targeted case-finding. Interviews followed an interview guide, were audio-recorded, transcribed verbatim, coded and analysed using 'Framework Approach'...
August 29, 2017: NPJ Primary Care Respiratory Medicine
https://www.readbyqxmd.com/read/28818709/blood-global-dna-methylation-is-decreased-in-non-severe-chronic-obstructive-pulmonary-disease-copd-patients
#9
Angelo Zinellu, Elisabetta Sotgiu, Alessandro G Fois, Elisabetta Zinellu, Salvatore Sotgia, Sara Ena, Arduino A Mangoni, Ciriaco Carru, Pietro Pirina
BACKGROUND: Alterations in global DNA methylation have been associated with oxidative stress (OS). Since chronic obstructive pulmonary disease (COPD) is characterized by increased oxidative stress we aimed to evaluate the levels of global DNA methylation in this patient group. METHODS: We assessed methylcytosine (mCyt) levels in DNA from blood collected in 43 COPD patients (29 with mild and 14 with moderate disease) and 43 age- and sex-matched healthy controls. RESULTS: DNA methylation was significantly lower in COPD patients vs...
August 14, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28813176/validating-the-concept-of-copd-control-a-real-world-cohort-study-from-the-united-kingdom
#10
Anjan Nibber, Alison Chisholm, Juan José Soler-Cataluña, Bernardino Alcazar, David Price, Marc Miravitlles
The concept of Chronic Obstructive Pulmonary Disease (COPD) control has been developed to inform therapeutic decision-making. We explored the validity of a definition of COPD control in a representative population of patients with COPD in the United Kingdom. Electronic medical records and linked COPD questionnaire data from the Optimum Patient Care Research Database were used to characterize control status. Patients were aged ≥40 years, with spirometry-confirmed COPD, current or ex-smokers, and continuous records throughout the study period...
August 16, 2017: COPD
https://www.readbyqxmd.com/read/28801407/the-boundaries-of-mild-chronic-obstructive-pulmonary-disease-copd-design-of-the-searching-clinical-copd-onset-soon-study
#11
Gonzalo Labarca, Andrea Bustamante, Gonzalo Valdivia, Rodrigo Díaz, Álvaro Huete, Paul Mac Nab, Laura Mendoza, Jaime Leppe, Carmen Lisboa, Fernando Saldías, Orlando Díaz
INTRODUCTION: Clinical onset of chronic obstructive pulmonary disease (COPD) is the point at which the disease is first identifiable by physicians. It is a poorly defined stage which seems to include both mild spirometric and non-spirometric disease, and could be described as early grade COPD, for practical purposes. While dyspnoea; chronic bronchitis and CT imaging evidence of emphysema and airway disease may be present very early, the lone significance of dyspnoea, the most relevant symptom in COPD in identifying these individuals, has been scarcely assessed...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28799856/severity-of-airflow-obstruction-in-chronic-obstructive-pulmonary-disease-copd-proposal-for-a-new-classification
#12
Sonia Coton, William M Vollmer, Eric Bateman, Guy B Marks, Wan Tan, Filip Mejza, Sanjay Juvekar, Christer Janson, Kevin Mortimer, Mahesh P A, A Sonia Buist, Peter G J Burney
Current classifications of Chronic Obstructive Pulmonary Disease (COPD) severity are complex and do not grade levels of obstruction. Obstruction is a simpler construct and independent of ethnicity. We constructed an index of obstruction severity based on the FEV1/FVC ratio, with cut-points dividing the Burden of Obstructive Lung Disease (BOLD) study population into four similarly sized strata to those created by the GOLD criteria that uses FEV1. We measured the agreement between classifications and the validity of the FEV1-based classification in identifying the level of obstruction as defined by the new groupings...
August 11, 2017: COPD
https://www.readbyqxmd.com/read/28791839/a-comparative-study-of-strem-1-il-6-and-il-13-concentration-in-bronchoalveolar-lavage-fluid-in-asthma-and-copd-a-preliminary-study
#13
COMPARATIVE STUDY
Małgorzata Proboszcz, Magdalena Paplińska-Goryca, Patrycja Nejman-Gryz, Katarzyna Górska, Rafał Krenke
BACKGROUND: Soluble triggering receptor expressed on myeloid cells-1 (sTREM-1) is a cell-surface receptor presented on neutrophils, macrophages and monocytes. Elevated sTREM-1 levels are a marker of acute microbial infections, and have also been reported in chronic lung diseases. IL-6 and IL-13 are effective markers in distinguishing these diseases. IL-6 has been shown to play an important role in chronic obstructive pulmonary disease (COPD), while IL-13 is described as one of the key mediators of allergic asthma...
March 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28790814/bacteriological-incidence-in-pneumonia-patients-with-pulmonary-emphysema-a-bacterial-floral-analysis-using-the-16s-ribosomal-rna-gene-in-bronchoalveolar-lavage-fluid
#14
Keisuke Naito, Kei Yamasaki, Kazuhiro Yatera, Kentaro Akata, Shingo Noguchi, Toshinori Kawanami, Kazumasa Fukuda, Takashi Kido, Hiroshi Ishimoto, Hiroshi Mukae
Pulmonary emphysema is an important radiological finding in chronic obstructive pulmonary disease patients, but bacteriological differences in pneumonia patients according to the severity of emphysematous changes have not been reported. Therefore, we evaluated the bacteriological incidence in the bronchoalveolar lavage fluid (BALF) of pneumonia patients using cultivation and a culture-independent molecular method. Japanese patients with community-acquired pneumonia (83) and healthcare-associated pneumonia (94) between April 2010 and February 2014 were evaluated...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28790808/copd-patients-self-reported-adherence-psychosocial-factors-and-mild-cognitive-impairment-in-pulmonary-rehabilitation
#15
Antonia Pierobon, Elisa Sini Bottelli, Laura Ranzini, Claudio Bruschi, Roberto Maestri, Giorgio Bertolotti, Marinella Sommaruga, Valeria Torlaschi, Simona Callegari, Anna Giardini
In addition to clinical comorbidities, psychological and neuropsychological problems are frequent in COPD and may affect pulmonary rehabilitation delivery and outcome. The aims of the study were to describe a COPD population in a rehabilitative setting as regards the patients depressive symptoms, anxiety, mild cognitive impairment (MCI) and self-reported adherence and to analyze their relationships; to compare the COPD sample MCI scores with normative data; and to investigate which factors might predict adherence to prescribed physical exercise...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28762839/new-treatment-options-for-lower-respiratory-tract-infections
#16
Bela Kocsis, Dora Szabo
Community-acquired pneumonia (CAP) and acute exacerbation of chronic obstructive pulmonary disease (AECOPD) are among the most frequent lower respiratory tract infections (LRTIs). They represent an increased morbidity and mortality rate in adults. Areas covered: This review describes recent advances regarding solithromycin, zabofloxacin and delafoxacin antibacterial agents that have been recently developed for treatment of CAP and in AECOPD. All of them have been introduced into phase III clinical trials. We will be summarising chemical structures, pharmacokinetics, antibacterial efficacy and toxicity of these agents...
September 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28762783/one-off-spirometry-is-insufficient-to-rule-in-or-rule-out-mild-to-moderate-chronic-obstructive-pulmonary-disease
#17
Shumonta Quaderi, John R Hurst
No abstract text is available yet for this article.
August 1, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28761899/efficacy-and-safety-of-intravenous-peramivir-compared-with-oseltamivir-in-high-risk-patients-infected-with-influenza-a-and-b-viruses-a-multicenter-randomized-controlled-study
#18
Shigeki Nakamura, Taiga Miyazaki, Koichi Izumikawa, Hiroshi Kakeya, Yutaka Saisho, Katsunori Yanagihara, Yoshitsugu Miyazaki, Hiroshi Mukae, Shigeru Kohno
BACKGROUND: Clinical studies comparing the different neuraminidase inhibitors for treatment of at-risk patients with influenza have not been performed. To optimize such treatments, we assessed the efficacy and safety of intravenous peramivir compared with oral oseltamivir in treating seasonal influenza A or B virus infection. METHODS: A multicenter, randomized, controlled clinical trial was conducted from December 2012 to May 2014 in high-risk patients infected with seasonal influenza...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28747961/determinants-of-nicotine-dependence-in-chronic-obstructive-pulmonary-disease
#19
Yun Su Sim, Jin Hwa Lee, Ki Uk Kim, Seung Won Ra, Hye Yun Park, Chang-Hoon Lee, Deog Kyeom Kim, Kyeong-Cheol Shin, Sang Haak Lee, Hun Gyu Hwang, Joong Hyun Ahn, Yong Bum Park, Yu-Il Kim, Kwang Ha Yoo, Ina Jeong, Yeon-Mok Oh, Sang-Do Lee
BACKGROUND: Smoking cessation is the most powerful intervention to modify progress of chronic obstructive pulmonary disease (COPD), and nicotine dependence is one of the most important determinants of success or failure in smoking cessation. We evaluated nicotine dependence status and investigated factors associated with moderate to high nicotine dependence in patients with COPD. METHODS: We included 53 current smokers with COPD in the Korean Obstructive Lung Disease II cohort enrolled between January 2014 and March 2016...
July 2017: Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28746527/sleep-disordered-breathing-in-patients-with-copd-and-mild-hypoxemia-prevalence-and-predictive-variables
#20
José Laerte Rodrigues Silva, Marcus Barreto Conde, Krislainy de Sousa Corrêa, Helena Rabahi, Arthur Alves Rocha, Marcelo Fouad Rabahi
Objective: To infer the prevalence and variables predictive of isolated nocturnal hypoxemia and obstructive sleep apnea (OSA) in patients with COPD and mild hypoxemia. Methods: This was a cross-sectional study involving clinically stable COPD outpatients with mild hypoxemia (oxygen saturation = 90-94%) at a clinical center specializing in respiratory diseases, located in the city of Goiânia, Brazil. The patients underwent clinical evaluation, spirometry, polysomnography, echocardiography, arterial blood gas analysis, six-minute walk test assessment, and chest X-ray...
May 2017: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
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