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Pathogenesis of COPD

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https://www.readbyqxmd.com/read/28214201/up-regulation-of-pim-3-in-chronic-obstructive-pulmonary-disease-copd-patients-and-its-potential-therapeutic-role-in-copd-rat-modeling
#1
Cheng Yang, Li Li, Junhua Guo, Weiqiang Zhang, Wenbiao Zhu, Xinhui Rao, Wenjie Huang
BACKGROUND: Pim-3 belongs to the PIM kinase family and plays an important role in promoting inflammation, which is essential in the pathogenesis of Chronic Obstructive Pulmonary Disease (COPD). METHODS: Immunohistochemistry (IHC), western blot, and RT-PCR analyses were performed to assess the expression of Pim-3 in both COPD and healthy lung tissue samples. SMA (Smooth Muscle Actin) and Cyclin D1 expression were detected by IHC. We also constructed animal models for the control, COPD, and Pim-3 inhibition groups, in order to analyze the effects of Pim-3 inhibition on COPD, and the role of Pim-3 in the p38 pathway...
January 29, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28212273/oxidative-stress-in-copd-sources-markers-and-potential-mechanisms
#2
REVIEW
Adam John Anthony McGuinness, Elizabeth Sapey
Markers of oxidative stress are increased in chronic obstructive pulmonary disease (COPD) and reactive oxygen species (ROS) are able to alter biological molecules, signaling pathways and antioxidant molecule function, many of which have been implicated in the pathogenesis of COPD. However, the involvement of ROS in the development and progression of COPD is not proven. Here, we discuss the sources of ROS, and the defences that have evolved to protect against their harmful effects. We address the role that ROS may have in the development and progression of COPD, as well as current therapeutic attempts at limiting the damage they cause...
February 15, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28208905/n-acetylcysteine-combined-with-home-based-physical-activity-effect-on-health-related-quality-of-life-in-stable-copd-patients-a-randomised-controlled-trial
#3
Vijay Tukaram Salve, Jitesh S Atram
INTRODUCTION: Quality of life is adversely affected in Chronic Obstructive Pulmonary Disease (COPD), due to irreversible, progressive nature of the disease and limitations of current treatment options available. One of the important aim of treatment of COPD is to improve Quality of Life (QoL). Cigarette smoke contains numerous free radicals and other oxidants. Oxidative stress has been implicated in pathogenesis, progression of disease and exacerbation in COPD. Pulmonary tuberculosis, outdoor and indoor air pollution and many others are aetiologies of COPD in non-smokers...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207279/angiotensin-converting-inhibitors-and-angiotensin-ii-receptor-blockers-and-longitudinal-change-in-percent-emphysema-on-computed-tomography-the-mesa-lung-study
#4
Megha A Parikh, Carrie P Aaron, Eric A Hoffman, Joseph E Schwartz, Jaime Madrigano, John H M Austin, Ravi Kalhan, Gina Lovasi, Karol Watson, Karen Hinckley Stukovsky, R Graham Barr
RATIONALE: Chronic obstructive pulmonary disease (COPD) is the third-leading cause of death in the United States. Emphysema on computed tomography (CT) is associated with increased morbidity and mortality in patients with and without spirometrically defined COPD but no available medications target emphysema.  Transforming growth factor beta (TGF-β) and endothelial dysfunction are implicated in emphysema pathogenesis, and angiotensin II receptor blockers (ARB) inhibit TGF-β, improve endothelial function and restore airspace architecture in murine models...
February 16, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28203404/the-role-of-cyclooxygenase-2-in-the-protection-against-apoptosis-in-vascular-endothelial-cells-induced-by-cigarette-smoking
#5
Zhihui Shi, Yan Chen, Yanfang Pei, Yingjiao Long, Caihong Liu, Jun Cao, Ping Chen
BACKGROUND: Apoptosis has been demonstrated to be an important upstream event in the pathogenesis of chronic obstructive pulmonary disease (COPD). Cyclooxygenase-2 (COX-2) seems to be biologically relevant in COPD. However, the role of COX-2 in the apoptosis in vascular endothelial cells induced by cigarette smoke extract (CSE) remains to be elucidated. Our recent study found that the prostacyclin, one of the COX products in the microvascular endothelium, inhibited apoptosis in the emphysematous lungs of rats induced by CSE...
January 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28197929/epithelial-mesenchymal-transition-emt-and-non-small-cell-lung-cancer-nsclc-a-mutual-association-with-airway-disease
#6
Malik Quasir Mahmood, Chris Ward, Hans Konrad Muller, Sukhwinder Singh Sohal, Eugene Haydn Walters
NSCLC is a leading cause of morbidity and mortality worldwide. It includes adeno- and squamous cell carcinoma. In the background, COPD and smoking play a vital role in development of NSCLC. Local progression and metastasis of NSCLC has been associated with various mechanisms, but in particular by a process called epithelial mesenchymal transition (EMT), which is implicated in COPD pathogenesis. In this study, we have investigated whether expression of EGFR (activation marker) and S100A4, vimentin and N-cadherin (as EMT) is different both in central and leading edge of NSCLC and to what extent related to EMT activity of both small and large airways, stage and differentiation of NSCLC...
March 2017: Medical Oncology
https://www.readbyqxmd.com/read/28188041/chronic-obstructive-pulmonary-disease-and-atrial-fibrillation-an-unknown-relationship
#7
REVIEW
Christos A Goudis
Chronic obstructive pulmonary disease (COPD) is independently associated with atrial fibrillation (AF). Decreased oxygenation, hypercapnia, pulmonary hypertension, diastolic dysfunction, oxidative stress, inflammation, changes in atrial size by altered respiratory physiology, increased arrhythmogenicity from nonpulmonary vein foci commonly located in the right atrium, and respiratory drugs have been implicated in the pathogenesis of AF in COPD. The understanding of the relationship between COPD and AF is of particular importance, as the presence of the arrhythmia has significant impact on mortality, especially in COPD exacerbations...
February 7, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28176939/factors-associated-with-plasma-il-33-levels-in-patients-with-chronic-obstructive-pulmonary-disease
#8
Sei Won Kim, Chin Kook Rhee, Ki Uk Kim, Sang Haak Lee, Hun Gyu Hwang, Yu Il Kim, Deog Kyeom Kim, Sang Do Lee, Yeon-Mok Oh, Hyoung Kyu Yoon
BACKGROUND: Interleukin (IL)-33 promotes T helper (Th)2 immunity and systemic inflammation. The role of IL-33 in asthma has been widely investigated. IL-33 has also been suggested to play an important role in the pathogenesis of chronic obstructive pulmonary disease (COPD). This study investigated the clinical significance and usefulness of plasma IL-33 level in patients with COPD. METHODS: A total of 307 patients with stable COPD from 15 centers, who were in the Korean Obstructive Lung Disease cohort, were enrolled in this study...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28160496/molecular-pathogenesis-in-chronic-obstructive-pulmonary-disease-and-therapeutic-potential-by-targeting-amp-activated-protein-kinase
#9
REVIEW
Zhihui Zhang, Xiaoyu Cheng, Li Yue, Wenhui Cui, Wencheng Zhou, Jian Gao, Hongwei Yao
Chronic obstructive pulmonary disease (COPD) is the third leading cause of death worldwide, which is characterized by a persistent airflow limitation caused by chronic inflammatory responses to noxious particles or gases. Cigarette smoke and environmental pollutions are major etiological factors for causing COPD. It has been shown that cigarette smoking causes abnormal inflammatory responses, cellular senescence, mitochondrial dysfunction and metabolic dysregulation, suggesting their involvement in the development of COPD...
February 4, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28159164/respiratory-viral-infections-in-chronic-lung-diseases
#10
REVIEW
Clemente J Britto, Virginia Brady, Seiwon Lee, Charles S Dela Cruz
Chronic lung diseases, such as chronic obstructive pulmonary disease (COPD), asthma, cystic fibrosis (CF) and interstitial lung diseases (ILD), affect many individuals worldwide. Patients with these chronic lung diseases are susceptible to respiratory lung infections and some of these viral infections can contribute to disease pathogenesis. This review highlights the associations of lung infections and the respective chronic lung diseases and how infection in the different lung diseases affects disease exacerbation and progression...
March 2017: Clinics in Chest Medicine
https://www.readbyqxmd.com/read/28148566/blockade-of-rage-ameliorates-elastase-induced-emphysema-development-and-progression-via-rage-damp-signaling
#11
Hanbyeol Lee, Jeong-Ran Park, Woo Jin Kim, Isaac K Sundar, Irfan Rahman, Sung-Min Park, Se-Ran Yang
The receptor for advanced glycan end products (RAGE) has been identified as a susceptibility gene for chronic obstructive pulmonary disease (COPD) in genome-wide association studies (GWASs). However, less is known about how RAGE is involved in the pathogenesis of COPD. To determine the molecular mechanism by which RAGE influences COPD in experimental COPD models, we investigated the efficacy of the RAGE-specific antagonist FPS-ZM1 administration in in vivo and in vitro COPD models. We injected elastase intratracheally and the RAGE antagonist FPS-ZM1 in mice, and the infiltrated inflammatory cells and cytokines were assessed by ELISA...
February 1, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28145442/elevated-gdf-15-contributes-to-pulmonary-inflammation-upon-cigarette-smoke-exposure
#12
F M Verhamme, L J M Seys, E G De Smet, S Provoost, W Janssens, D Elewaut, G F Joos, G G Brusselle, K R Bracke
The molecular mechanisms underlying the pathogenesis of chronic obstructive pulmonary disease (COPD) are still unclear, however signaling pathways associated with lung development, such as the transforming growth factor (TGF)-β superfamily, could be implicated in COPD. Growth differentiation factor (GDF)-15, a member of the TGF-β superfamily, is involved in inflammation, mucus secretion, and cachexia. We analyzed the pulmonary expression of GDF-15 in smokers and patients with COPD, in cigarette smoke (CS)-exposed cultures of primary human bronchial epithelial cells (pHBECs), and in CS-exposed mice...
February 1, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28138235/interactions-between-single-nucleotide-polymorphism-of-serpina1-gene-and-smoking-in-association-with-copd-a-case-control-study
#13
Xiaowei Deng, Cun-Hua Yuan, De Chang
BACKGROUND: SERPINA1 gene has been implicated in the pathogenesis of chronic obstructive pulmonary disease (COPD), while smoking is a known risk factor for COPD. Little is known on the effect of SERPINA1 gene and its interaction with smoking in the Chinese population. In this study, the effect of SERPINA1 gene polymorphisms on COPD risk and its interaction with smoking status has been investigated. METHOD: A total of 120 COPD patients and 481 healthy controls were recruited at The Armed Police Corps Hospital...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28128006/non-infectious-pulmonary-disorders-in-hiv
#14
Choua Thao, Andrew F Shorr, Christian Woods
Since the advent of antiretroviral therapy (ART), non-infectious pulmonary disorders have become common comorbidities in the human immunodeficiency virus (HIV) positive population. Clinicians caring for those with HIV disease should be aware of the prevalence of non-infectious pulmonary disorders. A comprehensive understanding is required to diagnosis and manage these syndromes appropriately. Areas covered: This review focuses on the epidemiology, risk factors, pathogenesis, clinical feature and diagnosis, and treatment of HIV-related chronic obstructive pulmonary disease (COPD), lung cancer, pulmonary hypertension...
February 3, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28118826/pharmacological-investigation-on-the-anti-oxidant-and-anti-inflammatory-activity-of-n-acetylcysteine-in-an-ex-vivo-model-of-copd-exacerbation
#15
Mario Cazzola, Luigino Calzetta, Francesco Facciolo, Paola Rogliani, Maria Gabriella Matera
BACKGROUND: Oxidative stress is recognized to be one of predisposing factor in the pathogenesis of COPD. The oxidant/antioxidant imbalance is significantly pronounced in patients with COPD exacerbation. N-acetylcysteine (NAC) seems to be able to reduce COPD exacerbations by modulating the oxidative stress in addition to its well-known mucolytic activity, but there are discordant findings on the actual anti-oxidant activity of NAC. METHODS: The anti-oxidant effect of NAC and its impact on the inflammatory response have been pharmacologically characterized on a human ex vivo model of COPD exacerbation induced by lipopolysaccharide (LPS)...
January 24, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28108847/airway-mucus-inflammation-and-remodeling-emerging-links-in-the-pathogenesis-of-chronic-lung-diseases
#16
REVIEW
Zhe Zhou-Suckow, Julia Duerr, Matthias Hagner, Raman Agrawal, Marcus A Mall
Airway mucus obstruction is a hallmark of many chronic lung diseases including rare genetic disorders such as cystic fibrosis (CF) and primary ciliary dyskinesia, as well as common lung diseases such as asthma and chronic obstructive pulmonary disease (COPD), which have emerged as a leading cause of morbidity and mortality worldwide. However, the role of excess airway mucus in the in vivo pathogenesis of these diseases remains poorly understood. The generation of mice with airway-specific overexpression of epithelial Na(+) channels (ENaC), exhibiting airway surface dehydration (mucus hyperconcentration), impaired mucociliary clearance (MCC) and mucus plugging, led to a model of muco-obstructive lung disease that shares key features of CF and COPD...
January 20, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28053515/gender-differences-in-the-t-cell-profiles-of-the-airways-in-copd-patients-associated-with-clinical-phenotypes
#17
Helena Forsslund, Mingxing Yang, Mikael Mikko, Reza Karimi, Sven Nyrén, Benita Engvall, Johan Grunewald, Heta Merikallio, Riitta Kaarteenaho, Jan Wahlström, Åsa M Wheelock, C Magnus Sköld
T lymphocytes are believed to play an important role in the pathogenesis of chronic obstructive pulmonary disease (COPD). How T cells are recruited to the lungs and contribute to the inflammatory process is largely unknown. COPD is a heterogeneous disease, and discriminating disease phenotypes based on distinct molecular and cellular pathways may provide new approaches for individualized diagnosis and therapies. Bronchoalveolar lavage (BAL) and blood samples were obtained from 40 never-smokers, 40 smokers with normal lung function, and 38 COPD patients...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28039405/role-of-baff-in-pulmonary-autoantibody-responses-induced-by-chronic-cigarette-smoke-exposure-in-mice
#18
Mathieu C Morissette, Yang Gao, Pamela Shen, Danya Thayaparan, Jean-Christophe Bérubé, Peter D Paré, Corry-Anke Brandsma, Ke Hao, Yohan Bossé, Rachel Ettinger, Ronald Herbst, Alison A Humbles, Roland Kolbeck, Nanshan Zhong, Rongchang Chen, Martin R Stämpfli
Emerging evidence suggests that autoimmune processes are implicated in the pathogenesis of chronic obstructive pulmonary disease (COPD). In this study, we assessed the expression of B-cell activating factor (BAFF) in smokers, and investigated the functional importance of BAFF in the induction and maintenance of cigarette smoke-induced pulmonary antinuclear antibodies (ANA) and tertiary lymphoid tissues (TLTs) using a preclinical mouse model. We observed that BAFF levels were elevated in smokers and mice exposed to cigarette smoke...
December 2016: Physiological Reports
https://www.readbyqxmd.com/read/28030992/macrolides-a-promising-pharmacologic-therapy-for-chronic-obstructive-pulmonary-disease
#19
Shilin Qiu, Xiaoning Zhong
Chronic inflammation plays a central role in the pathogenesis of chronic obstructive pulmonary disease (COPD). However, there are no effective anti-inflammatory pharmacologic therapies available for COPD so far. Recent evidence suggests that an immunologic mechanism has a role in the pathogenesis of COPD. Macrolides possess anti-inflammatory and immune-modulating effects may be helpful in the treatment of COPD. Several clinical studies have shown that long-term use of macrolides reduces the frequency of COPD exacerbations...
December 1, 2016: Therapeutic Advances in Respiratory Disease
https://www.readbyqxmd.com/read/28024128/-pathogenesis-diagnosis-and-treatment-of-chronic-obstructive-pulmonary-disease-in-the-light-of-new-research
#20
EDITORIAL
Tadeusz Płusa
Accurate number of patients with chronic obtructive pulmonary disease (COPD) is difficult to determine, both in Poland and in the world. Quoted estimates and fragmented with the research indicate that approx. 10% of the world's population may be burdened by this disease. As it turns out, COPD is recognized in 25-45% in non-smokers, suggesting a genetic link. This is confirmed by new data that indicates that further embodiments having genetic polymorphisms associated with the occurrence of the disease. It was further found that the allele GC-1F vitamin D were risk factor for development of COPD...
December 22, 2016: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
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