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https://www.readbyqxmd.com/read/29050289/acrolein-induces-mtdna-damages-mitochondrial-fission-and-mitophagy-in-human-lung-cells
#1
Hsiang-Tsui Wang, Jing-Heng Lin, Chun-Hsiang Yang, Chun-Hao Haung, Ching-Wen Weng, Anya Maan-Yuh Lin, Yu-Li Lo, Wei-Shen Chen, Moon-Shong Tang
Acrolein (Acr), a highly reactive unsaturated aldehyde, can cause various lung diseases including asthma, chronic obstructive pulmonary disease (COPD), and lung cancer. We have found that Acr can damage not only genomic DNA but also DNA repair proteins causing repair dysfunction and enhancing cells' mutational susceptibility. While these effects may account for Acr lung carcinogenicity, the mechanisms by which Acr induces lung diseases other than cancer are unclear. In this study, we found that Acr induces damages in mitochondrial DNA (mtDNA), inhibits mitochondrial bioenergetics, and alters mtDNA copy number in human lung epithelial cells and fibroblasts...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29047085/redox-dependent-calpain-signaling-in-airway-and-pulmonary-vascular-remodeling-in-copd
#2
Laszlo Kovacs, Yunchao Su
The calcium-dependent cytosolic, neutral, thiol endopeptidases, calpains, perform limited cleavage of their substrates thereby irreversibly changing their functions. Calpains have been shown to be involved in several physiological processes such as cell motility, proliferation, cell cycle, signal transduction, and apoptosis. Overactivation of calpain or mutations in the calpain genes contribute to a number of pathological conditions including neurodegenerative disorders, rheumatoid arthritis, cancer, and lung diseases...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29046956/unpredictable-episodic-breathlessness-in-patients-with-advanced-chronic-obstructive-pulmonary-disease-and-lung-cancer-a-qualitative-study
#3
P Linde, G Hanke, R Voltz, S T Simon
PURPOSE: The internationally consented definition and categorization describe two categories of episodic breathlessness: predictable (with known triggers) and unpredictable. The link of known triggers only to predictable episodes can be read that unpredictable episodes have none known trigger. Our aim was to illuminate patients' experiences with episodes of unpredictable breathlessness, to collect descriptions of the episodes' impact on the patients' lives, and, in turn, the patients' individual coping strategies in this connection...
October 18, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/29046030/-immunopathology-of-chronic-obstructive-pulmonary-disease
#4
Nora Ernestina Martínez-Aguilar, María Eugenia Vargas-Camaño, Rogelio Ramsés Hernández-Pliego, Genny Margarita Chaia-Semerena, María Rosario Pérez-Chavira
Chronic obstructive pulmonary disease (COPD) is a common, preventable and treatable condition that has a complex pathophysiology and an even more complex immunopathological process. The purpose of this review was to analyze COPD immunopathological aspects, which was addressed by undertaking a literature search for the most relevant documents indexed in the PubMed database over the last 10 years. Different conclusions could be drawn: in COPD immunopathology there are immune and non-immune inflammatory changes with oxidative stress imbalance, there are alterations in the protease/anti-protease ratio caused by direct and indirect genetic and epigenetic-environmental defects; COPD produces irreversible tissue damage and chronic inflammation with tissue repair alteration, which induces chronic obstruction of the airway, bronchitis and systemic damage...
July 2017: Revista Alergia Mexico: Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C
https://www.readbyqxmd.com/read/29043847/smoking-related-interstitial-fibrosis-evidence-of-radiologic-regression-with-advancing-age-and-smoking-cessation
#5
Aurélie Fabre, Ann Treacy, Lisa P Lavelle, Maciek Narski, Nazia Faheem, David Healy, Jonathan D Dodd, Michael P Keane, James J Egan, Gilles Jebrak, Hervé Mal, Marcus W Butler
More data are needed regarding the radiology, co-morbidities and natural history of smoking-related interstitial fibrosis (SRIF), a common pathological finding, mainly described heretofore in association with lung cancer, where respiratory bronchiolitis (RB) usually co-exists. We prospectively acquired high resolution CT scan data (edge-enhancing lung reconstructions) to detect any radiologic interstitial lung abnormality (ILA) in individuals who ultimately underwent surgical lobectomy for lung cancer (n = 20), for radiologic/pathologic correlation...
October 18, 2017: COPD
https://www.readbyqxmd.com/read/29042765/risk-of-cancer-after-lung-transplantation-for-copd
#6
Magnus Ekström, Gerdt C Riise, Hanan A Tanash
BACKGROUND: The risk of cancer is increased and affects survival after lung transplantation (LTx), but has not been well characterized in COPD. We aimed to evaluate the incidence and prognosis of cancer following LTx for COPD. METHODS: A prospective, population-based study of patients undergoing LTx for end-stage COPD at the two transplantation centers in Sweden between 1990-2013, with follow-up for incident cancer and death, using national registers. The excess risk of cancer was calculated as standardized incidence ratios compared with the general population matched for age, sex, and calendar year...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29038933/volume-doubling-time-of-lung-cancer-detected-in-idiopathic-interstitial-pneumonia-comparison-with-that-in-chronic-obstructive-pulmonary-disease
#7
Cherry Kim, Sang Min Lee, Jooae Choe, Eun Jin Chae, Kyung-Hyun Do, Joon Beom Seo
OBJECTIVES: To assess the volume doubling time (VDT) of lung cancers in IIP compared with COPD. METHODS: A total of 61 patients (32 with IIP and 29 with COPD) were identified. A radiologist performed three-dimensional manual segmentation for lung cancers. VDTs were calculated and compared between two groups. Logistic regression was performed to identify factors associated with rapid tumour growth (VDT < 90 days). RESULTS: The median VDT of lung cancers in IIP (78...
October 16, 2017: European Radiology
https://www.readbyqxmd.com/read/28983782/electronic-cigarettes-their-constituents-and-potential-links-to-asthma
#8
REVIEW
Phillip W Clapp, Ilona Jaspers
PURPOSE OF REVIEW: Vaping is gaining popularity in the USA, particularly among teens and young adults. While e-cigs are commonly represented as safer alternatives to tobacco cigarettes, little is known regarding the health effects of their short- or long-term use, especially in individuals with pre-existing respiratory diseases such as asthma. Flavored e-cig liquids (e-liquids) and e-cig aerosols contain airway irritants and toxicants that have been implicated in the pathogenesis and worsening of lung diseases...
October 5, 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/28976075/survival-significance-of-coexisting-chronic-obstructive-pulmonary-disease-in-patients-with-early-lung-cancer-after-curative-surgery
#9
Hisashi Saji, Tomoyuki Miyazawa, Hiroki Sakai, Yusuke Kimura, Masataka Tsuda, Yoichi Wakiyama, Hideki Marushima, Koji Kojima, Haruhiko Nakamura
BACKGROUND: The impact of chronic obstructive pulmonary disease (COPD) severity on survival after curative resection of early-stage lung cancer (NSCLC) has not been sufficiently elucidated. METHODS: We retrospectively reviewed 250 consecutive patients who underwent lobectomy with lymph nodal dissection for pathological stage I-II NSCLC. RESULTS: Among the COPD patients, 28 were classified as Global Initiative for Chronic Obstructive Lung Disease (GOLD) 1, 21 as GOLD 2, and one as GOLD 3...
October 4, 2017: Thoracic Cancer
https://www.readbyqxmd.com/read/28969651/exclusion-of-emphysematous-lung-from-dose-volume-estimates-of-risk-improves-prediction-of-radiation-pneumonitis
#10
Yasuki Uchida, Takuya Tsugawa, Sachiko Tanaka-Mizuno, Kazuo Noma, Ken Aoki, Wataru Shigemori, Hiroaki Nakagawa, Daisuke Kinose, Masafumi Yamaguchi, Makoto Osawa, Emiko Ogawa, Yasutaka Nakano
BACKGROUND: The risk factors for radiation pneumonitis (RP) in patients with chronic obstructive pulmonary disease (COPD) are unclear. Mean lung dose (MLD) and percentage of irradiated lung volume are common predictors of RP, but the most accurate dosimetric parameter has not been established. We hypothesized that the total lung volume irradiated without emphysema would influence the onset of RP. METHODS: We retrospectively evaluated 100 patients who received radiotherapy for lung cancer...
October 2, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28963281/irradiation-enhanced-risks-of-hospitalised-pneumonopathy-in-lung-cancer-patients-a-population-based-surgical-cohort-study
#11
Shih-Kai Hung, Yi-Chun Chen, Wen-Yen Chiou, Chun-Liang Lai, Moon-Sing Lee, Yuan-Chen Lo, Liang-Cheng Chen, Li-Wen Huang, Nai-Chuan Chien, Szu-Chi Li, Dai-Wei Liu, Feng-Chun Hsu, Shiang-Jiun Tsai, Michael Wy Chan, Hon-Yi Lin
OBJECTIVE: Pulmonary radiotherapy has been reported to increase a risk of pneumonopathy, including pneumonitis and secondary pneumonia, however evidence from population-based studies is lacking. The present study intended to explore whether postoperative irradiation increases occurrence of severe pneumonopathy in lung cancer patients. DESIGN, SETTING AND PARTICIPANTS: The nationwide population-based study analysed the Taiwan National Health Insurance Research Database (covered >99% of Taiwanese) in a real-world setting...
September 27, 2017: BMJ Open
https://www.readbyqxmd.com/read/28934595/copd-alters-immune-cell-composition-and-immune-checkpoint-inhibitor-efficacy-in-nsclc
#12
Nicholas M Mark, Julia Kargl, Stephanie E Busch, Grace H Y Yang, Heather E Metz, Huajia Zhang, Jesse J Hubbard, Sudhakar N J Pipavath, David K Madtes, A McGarry Houghton
RATIONALE: Chronic obstructive pulmonary disease (COPD) and non-small cell lung cancer (NSCLC) are interrelated diseases with substantial mortality; the pathogenesis of both involves aberrant immune functioning. OBJECTIVE: To profile the immune cell composition and function in patients with NSCLC and describe the effect of COPD on lung and tumor microenvironments. METHODS: We profiled resected lung and tumor tissue using flow cytometry and T-cell receptor sequencing in patients with and without COPD from a prospective cohort of patients undergoing resection of NSCLC...
September 21, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28924113/the-evaluation-of-interstitial-abnormalities-in-group-b-of-the-2011-global-initiative-for-chronic-obstructive-lung-disease-gold-classification-of-chronic-obstructive-pulmonary-disease-copd
#13
Masahiro Ohgiya, Hirotoshi Matsui, Atsuhisa Tamura, Takafumi Kato, Shinobu Akagawa, Ken Ohta
Objective In 2011, the Global Initiative for Chronic Obstructive Lung Disease (GOLD) classification categorized chronic obstructive pulmonary disease (COPD) patients into 4 groups. A report demonstrated that the mortality in Group B was higher than that in Group C. Ischemic heart disease and cancer were suggested to be the cause. The aim of the present study was to test the hypothesis that interstitial lung abnormalities (ILAs) are more prevalent in Group B than Group C and that they may be responsible for the higher mortality in Group B...
September 15, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28919735/essential-need-for-rethink-of-copd-airway-pathology-implications-for-new-drug-approaches-for-prevention-of-lung-cancer-as-well-as-small-airway-fibrosis
#14
COMMENT
Sukhwinder Singh Sohal, Eugene Haydn Walters
No abstract text is available yet for this article.
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28883718/contributions-of-copd-asthma-and-ten-comorbid-conditions-to-health-care-utilization-and-patient-centered-outcomes-among-us-adults-with-obstructive-airway-disease
#15
Terrence E Murphy, Gail J McAvay, Heather G Allore, Jason A Stamm, Paul F Simonelli
BACKGROUND: Among persons with obstructive airway disease, the relative contributions of chronic obstructive pulmonary disease (COPD), asthma, and common comorbid conditions to health care utilization and patient-centered outcomes (PCOs) have not been previously reported. METHODS: We followed a total of 3,486 persons aged ≥40 years with COPD, asthma, or both at baseline, from the Medical Expenditure Panel Survey (MEPS) cohorts enrolled annually from 2008 through 2012 for 1 year...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28883453/%C3%AE-catenin-twist-and-snail-transcriptional-regulation-of-emt-in-smokers-and-copd-and-relation-to-airflow-obstruction
#16
Malik Quasir Mahmood, Eugene Haydn Walters, Shakti D Shukla, Steve Weston, Hans Konrad Muller, Chris Ward, Sukhwinder Singh Sohal
COPD is characterised by poorly reversible airflow obstruction usually due to cigarette smoking. The transcription factor clusters of β-catenin/Snail1/Twist has been implicated in the process of epithelial mesenchymal transition (EMT), an intermediate between smoking and airway fibrosis, and indeed lung cancer. We have investigated expression of these transcription factors and their "cellular localization" in bronchoscopic airway biopsies from patients with COPD, and in smoking and non-smoking controls. An immune-histochemical study compared cellular protein expression of β-catenin, Snail1 and Twist, in these subject groups in 3 large airways compartment: epithelium (basal region), reticular basement membrane (Rbm) and underlying lamina propria (LP)...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28866396/estimating-premature-mortality-attributable-to-pm2-5-exposure-and-benefit-of-air-pollution-control-policies-in-china-for-2020
#17
Kamal Jyoti Maji, Anil Kumar Dikshit, Mohit Arora, Ashok Deshpande
In past decade of rapid industrial development and urbanization, China has witnessed increasingly persistent severe haze and smog episodes, posing serious health hazards to the Chinese population, especially in densely populated cities. Quantification of health impacts attributable to PM2.5 (particulates with aerodynamic diameter≤2.5μm) has important policy implications to tackle air pollution. The Chinese national monitoring network has recently included direct measurements of ground level PM2.5, providing a potentially more reliable source for exposure assessment...
August 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28860884/chronic-obstructive-pulmonary-disease-in-patients-with-lung-cancer-prevalence-impact-and-management-challenges
#18
REVIEW
Dionisios Spyratos, Eleni Papadaki, Sofia Lampaki, Theodoros Kontakiotis
Chronic obstructive pulmonary disease (COPD) and lung cancer share a common etiological factor (cigarette smoking) and usually coexist in everyday clinical practice. The prevalence of COPD among newly diagnosed patients with lung cancer sometimes exceeds 50%. COPD is an independent risk factor (2-4 times higher than non-COPD subjects) for lung cancer development. The presence of emphysema in addition to other factors (e.g., smoking history, age) could be incorporated into risk scores in order to define the most appropriate target group for lung cancer screening using low-dose computed tomography...
2017: Lung Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28847044/-death-and-impact-of-life-expectancy-attributable-to-smoking-in-china-2013
#19
Y N Liu, J M Liu, S W Liu, X Y Zeng, P Yin, J L Qi, J L You, Z P Zhao, M Zhang, L M Wang, M G Zhou, L J Wang
Objective: To analyze the death attributable to smoking and impact of life expectancy in China in 2013. Methods: According to the characteristics of different diseases, we calculated the population attributable fractions of different diseases, death and impact of life expectancy which caused by smoking, using direct method (current smoking rate as exposure levels) and indirect method (smoking impact ratio as exposure levels), based on data from both programs of death surveillance and Chinese chronic disease risk factor surveillance of 2013...
August 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28841364/quality-improvement-initiatives-to-optimize-the-management-of-chronic-obstructive-pulmonary-disease-in-patients-with-lung-cancer
#20
Geneviève C Digby, Andrew Robinson
PURPOSE: Patients with lung cancer (LC) frequently have chronic obstructive pulmonary disease (COPD), the optimization of which improves outcomes. A 2014 Queen's University Hospitals audit demonstrated that COPD was underdiagnosed and undertreated in outpatients with LC. We sought to improve the diagnosis and management of COPD in this population. METHODS: We implemented change using a Define/Measure/Analyze/Improve/Control (DMAIC) improvement cycle. Data were obtained by chart review from the Cancer Care Ontario database and e-Patient System for patients with newly diagnosed LC, including patient characteristics, pulmonary function test (PFT) data, and bronchodilator therapies...
August 25, 2017: Journal of Oncology Practice
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