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Condition: Chronic Obstructive Pulmonary

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Total 173 results found since Jan 2013.

Suppression of cytokine production by glucocorticoids is mediated by MKP-1 in human lung epithelial cells
In conclusion, these data suggest that dexamethasone increases MKP-1 expression and th is results in the suppression of p38 MAPK signaling leading to the inhibition of cytokine production in human bronchial epithelial cells. These results point to the role of MKP-1 as an important factor in the therapeutic effects of glucocorticoids in the treatment of inflammatory lung diseases.
Source: Inflammation Research - March 14, 2017 Category: Research Source Type: research

Klotho Regulates Cigarette Smoke-Induced Autophagy: Implication in Pathogenesis of COPD
ConclusionsThese data suggest that Klotho plays a critical role in the regulation of CS-induced autophagy and have important implications in understanding the mechanisms of CS-induced cell death and senescence.
Source: Lung - March 28, 2017 Category: Respiratory Medicine Source Type: research

Genetic variance is associated with susceptibility for cigarette smoke-induced DAMP release in mice.
Abstract Chronic obstructive pulmonary disease (COPD) is characterized by unresolved neutrophilic airway inflammation, and is caused by chronic exposure to toxic gases, such as cigarette smoke (CS), in genetically susceptible individuals. Recent data indicate a role for Damage Associated Molecular Patterns (DAMPs) in COPD. Here, we investigated the genetics of CS-induced DAMP release in 28 inbred mouse strains. Subsequently, in lung tissue from a subset of strains the expression of the identified candidate genes was analyzed. We tested whether siRNA-dependent knockdown of candidate genes altered the susceptibility...
Source: Am J Physiol Lung Ce... - June 8, 2017 Category: Respiratory Medicine Authors: Pouwels SD, Faiz A, den Boef LE, Gras R, van den Berge M, Boezen HM, Korstanje R, Ten Hacken NHT, van Oosterhout AJM, Heijink IH, Nawijn MC Tags: Am J Physiol Lung Cell Mol Physiol Source Type: research

IL-1 β upregulates Muc5ac expression via NF-κB-induced HIF-1α in asthma.
IL-1β upregulates Muc5ac expression via NF-κB-induced HIF-1α in asthma. Immunol Lett. 2017 Oct 12;192:20-26 Authors: Wu S, Li H, Yu L, Wang N, Li X, Chen W Abstract The manifest and important feature in respiratory diseases, including asthma and COPD (chronic obstructive pulmonary disease), is the increased numbers and hypersecretion of goblet cells and overexpression of mucins, especially Muc5ac. Many proinflammatory cytokines play important roles in goblet cell metaplasia and overproduction of Muc5ac. However, the effect of IL-1β on Muc5ac expression in asthma remains unknown. Here, we detected ...
Source: Immunology Letters - October 12, 2017 Category: Allergy & Immunology Authors: Wu S, Li H, Yu L, Wang N, Li X, Chen W Tags: Immunol Lett Source Type: research

Effects of TRPC1 on epithelial mesenchymal transition in human airway in chronic obstructive pulmonary disease
Conclusion: Overexpression of TRPC1 in COPD promoted EMT process and TRPC1 may be a new and interesting focus for COPD new treatment in the future.
Source: Medicine - October 1, 2017 Category: Internal Medicine Tags: Research Article: Clinical Trial/Experimental Study Source Type: research

Interleukin-22 attenuates double-stranded RNA-induced upregulation of PD-L1 in airway epithelial cells via a STAT3-dependent mechanism.
Abstract Double-stranded RNA derived from viruses induces host immune responses. PD-L1, also known as B7-H1, is an immune-checkpoint molecule associated with the escape of viruses from host immune systems, which plays a role in the persistence of viral infection, resulting in exacerbations of underlying diseases such as asthma and chronic obstructive pulmonary disease. Interleukin (IL)-22 is produced from various immune cells and has protective properties on mucosal tissue. The binding of IL-22 to IL-22 receptor induces STAT3 activation. We investigated the effect of IL-22 on the expression in airway epithelial ce...
Source: Biochemical and Biophysical Research communications - November 30, 2017 Category: Biochemistry Authors: Seki N, Kan-O K, Matsumoto K, Fukuyama S, Hamano S, Tonai K, Ota K, Inoue H, Nakanishi Y Tags: Biochem Biophys Res Commun Source Type: research

RNA-binding protein HuR inhibits the expression of sirtuin-1 in patients with COPD
Conclusions: Our results indicate that HuR expression is inhibited by oxidative stress, suggesting a potential mechanism by which SIRT1 is reduced in COPD patients, leading to the accelerated ageing phenotype.
Source: European Respiratory Journal - December 6, 2017 Category: Respiratory Medicine Authors: Baker, J. R., Vuppusetty, C., Ito, K., Barnes, P., Yasuo, K. Tags: Airway Cell Biology and Immunopathology Source Type: research

LSC - 2017 - The role of the epigenetic regulator HMGN5 in COPD resulting from chronic lung injury
COPD, characterized by chronic bronchitis, small airway remodeling and emphysema, is one of the leading causes of chronic morbidity and mortality worldwide. Chronic lung injury, commonly caused by cigarette smoking (CS), is a major factor in its development. A role for epigenetics in this underlying pathology is emerging. We previously detected spontaneous emphysema in HMGN5-/-mice. HMGN5 binds to the nucleosomal core particle of chromatin, competing with histone H1, altering chromatin structure and affecting cellular transcription, differentiation and repair. Indeed, increased expression of HMGN5 has been observed in lung...
Source: European Respiratory Journal - December 6, 2017 Category: Respiratory Medicine Authors: Gunes, G., Conlon, T., Sarker, R., Burgstaller, G., Gailus-Durner, V., Fuchs, H., Hrabe de Angelis, M., Furusawa, T., Bustin, M., Eickelberg, O., Önder Yildirim, A., Dorer, J. Tags: Molecular Pathology and Functional Genomics Source Type: research

DJ-1 and its anti-oxidative stress response regulates the expression of sirtuin-1 in COPD epithelial cells
Conclusions: DJ-1 binds and regulates the expression of SIRT1 in epithelial cells. As both DJ-1 and SIRT1 were down-regulated in COPD, the association of these molecules may be a mechanism of impaired anti-ageing and defence against oxidative stress in COPD.
Source: European Respiratory Journal - December 6, 2017 Category: Respiratory Medicine Authors: Koga, T., Vuppusetty, C., Ito, K., Barnes, P. J., Baker, J. R. Tags: Airway Cell Biology and Immunopathology Source Type: research

Der f1 induces pyroptosis in human bronchial epithelia via the NLRP3 inflammasome.
Abstract Damage to the bronchial epithelium leads to persistent inflammation and airway remodelling in various respiratory diseases, such as asthma and chronic obstructive pulmonary disease. To date, the mechanisms underlying bronchial epithelial cell damage and death by common allergens remain largely unknown. The aim of the present study was to investigate Der f1, an allergen of Dermatophagoides farinae, which may result in the death of human bronchial epithelial cells (HBECs). Der f1 induces BECs to undergo the inflammatory cell death referred to as pyroptosis, induced by increasing lactate dehydrogenase rele...
Source: International Journal of Molecular Medicine - December 5, 2017 Category: Molecular Biology Authors: Tsai YM, Chiang KH, Hung JY, Chang WA, Lin HP, Shieh JM, Chong IW, Hsu YL Tags: Int J Mol Med Source Type: research

Cigarette smoke-induced inflammation: NLRP10-mediated mechanisms.
Abstract Chronic obstructive pulmonary disease (COPD) is a progressive, life-threatening disease that causes irreversible lung damage. Cigarette smoking is the chief etiologic factor for the commencement of this condition. Despite constant efforts to develop therapeutic interventions and to ascertain the molecular mechanism leading to the pathophysiology of this disease, much remains unknown. However, pattern recognition receptor (PRRs), i.e., Toll-like-receptors (TLRs) and NOD-like receptors (NLRs) are believed to play important roles in this disease and could serve as effective therapeutic targets. Although the ...
Source: Toxicology - February 28, 2018 Category: Toxicology Authors: Kaur G, Bagam P, Pinkston R, Singh DP, Batra S Tags: Toxicology Source Type: research

Apoptosis signal-regulating kinase 1 (ASK1) inhibition attenuates human airway smooth muscle growth and migration in chronic obstructive pulmonary disease (COPD).
Increased airway smooth muscle (ASM) mass is observed in COPD which is correlated with disease severity and negatively impact lung function. Thus, there is clear unmet clinical need for finding new therapies which can target airway remodeling and disease progression in COPD. Apoptosis signal-regulating kinase 1 (ASK1) is a ubiquitously expressed mitogen-activated protein kinase kinase kinase  activated by various stress stimuli, including reactive oxygen species, tumor necrosis factor-α, and lipopolysaccharide and is known to regulate cell proliferation. ASM cells from COPD patients are hyper-proliferative to mi...
Source: Clinical Science - July 13, 2018 Category: Biomedical Science Authors: Eapen, M. S., Kota, A., Vindin, H., McAlinden, K. D., Xenaki, D., Oliver, B. G., Deshpande, D. A., Sohal, S. S., Sharma, P. Tags: PublishAheadOfPrint Source Type: research

Engineering of budesonide-loaded lipid-polymer hybrid nanoparticles using a quality-by-design approach
This study shows the importance of systematic formulation design for understanding the effect of formulation parameters on the characteristics of LPNs, eventually resulting in the identification of an OOS.Graphical abstract
Source: International Journal of Pharmaceutics - July 25, 2018 Category: Drugs & Pharmacology Source Type: research

Overexpression of Forkhead box C1 attenuates oxidative stress, inflammation and apoptosis in chronic obstructive pulmonary disease
Publication date: Available online 11 November 2018Source: Life SciencesAuthor(s): Shuyue Xia, Jian Qu, Hui Jia, Wei He, Jing Li, Long Zhao, Mingqing Mao, Yan ZhaoAbstractAimChronic obstructive pulmonary disease (COPD) is a disease caused by cigarette smoke, which has been emerging as a serious health problem worldwide. The aim of this study is to explore the mRNA expression profile of lung tissues from the COPD rats and to characterize the role of Forkhead box C1 (Foxc1) in COPD.Main methodsWistar rats were exposed to cigarette smoke during 16 weeks for COPD model establishment. The microarray was used to identify the d...
Source: Life Sciences - November 12, 2018 Category: Biology Source Type: research

Cigarette smoke exposure decreases CFLAR expression in bronchial epithelium, augmenting susceptibility for cell death and DAMP release
In conclusion, CS exposure decreases CFLAR expression, which might increase susceptibility to immunogenic cell death. Our study suggests that susceptibility for CS-induced airway inflammation is driven by dysregulated cell death machinery, which may be used at target for future COPD treatments.
Source: European Respiratory Journal - November 19, 2018 Category: Respiratory Medicine Authors: Pouwels, S. D., Faiz, A., Heijink, I. H., Vermeulen, C. J., Guryev, V., Van Den Berge, M., Nawijn, M. C. Tags: Mechanisms of Lung Injury and Repair Source Type: research