scholarly journals Role of Collagen in Airway Mechanics

2021 ◽  
Vol 8 (1) ◽  
pp. 13
Author(s):  
Lumei Liu ◽  
Brooke Stephens ◽  
Maxwell Bergman ◽  
Anne May ◽  
Tendy Chiang
Keyword(s):  
Airway Disease ◽  
Tissue Mechanics ◽  
Chronic Obstructive ◽  
Collagen Deposition ◽  
Obstructive Pulmonary Disease ◽  
Area Of Interest ◽  
Airway Pathology ◽  
Airway Mechanics ◽  
The Impact

Collagen is the most abundant airway extracellular matrix component and is the primary determinant of mechanical airway properties. Abnormal airway collagen deposition is associated with the pathogenesis and progression of airway disease. Thus, understanding how collagen affects healthy airway tissue mechanics is essential. The impact of abnormal collagen deposition and tissue stiffness has been an area of interest in pulmonary diseases such as cystic fibrosis, asthma, and chronic obstructive pulmonary disease. In this review, we discuss (1) the role of collagen in airway mechanics, (2) macro- and micro-scale approaches to quantify airway mechanics, and (3) pathologic changes associated with collagen deposition in airway diseases. These studies provide important insights into the role of collagen in airway mechanics. We summarize their achievements and seek to provide biomechanical clues for targeted therapies and regenerative medicine to treat airway pathology and address airway defects.

scholarly journals THE ROLE OF MICROBIAL COMMUNITIES OF AIRWAYS IN PATHOGENESIS OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE

2014 ◽  
Vol 13 (1) ◽  
pp. 153-160 ◽  
Author(s):  
S. V. Fedosenko ◽  
L. M. Ogorodova ◽  
M. A. Karnaushkina ◽  
Ye. S. Kulikov ◽  
I. A. Deyev ◽  
...  
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Microbial Communities ◽  
Pulmonary Disease ◽  
Molecular Genetic ◽  
Genetic Identification ◽  
Current Therapy ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
The Impact

This review summarizes the results of studies on the composition of microbial communities in the airways of healthy subjects and in patients with chronic obstructive pulmonary disease. Modern technologies of molecular-genetic identification methods of microorganisms allow to perform a deep analysis  of  the  respiratory  microbiom.  It  is  of  considerable  interest  to  determine  the  role  of  the microbiome in the development of human diseases of the bronchopulmonary system, and to understand the impact of the microbes communities as a course of disease and the important factor for the efficacy of current therapy.

scholarly journals Inhalation glucocorticosteroids in the treatment of chronic obstructive pulmonary disease

2020 ◽  
Vol 30 (3) ◽  
pp. 330-343
Author(s):  
S. N. Avdeev ◽  
Z. R. Aisanov ◽  
V. V. Arkhipov ◽  
A. S. Belevskiy ◽  
I. V. Leshchenko ◽  
...  
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Pulmonary Disease ◽  
Chronic Obstructive Lung Disease ◽  
Clinical Excellence ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
Copd Exacerbations ◽  
Patient Reported ◽  
The Impact

The main objectives of chronic obstructive pulmonary disease (COPD) therapy are to reduce the severity of symptoms and the risk of exacerbations. The article discusses the role of local and systemic inflammation in the pathogenesis of COPD as well as various mechanisms of pharmacological influence on it. Approaches to prescribing basic therapy for patients with COPD, recommended by various national and global guidelines (clinical recommendations of the Russian respiratory society, criteria of the Global Initiative for Chronic Obstructive Lung Disease (GOLD), guidelines of the National Institute for Health and Clinical Excellence (NICE)), as well as recommendations on the therapy frequency review are considered. Currently, so-called triple combinations – fixed combinations of double bronchodilators with inhaled glucocorticosteroids – are being developed and registered in the world, and their place and significance in the treatment of COPD raise many discussions. The paper discusses the role of fixed triple combinations in reducing the incidence of COPD exacerbations, the impact on functional and patient-reported outcomes, and provides recommendations for the use of triple combinations in patients with COPD, taking into account the benefit/risk ratio.

scholarly journals Role of Sphingolipids in the Pathobiology of Lung Inflammation

2015 ◽  
Vol 2015 ◽  
pp. 1-19 ◽  
Author(s):  
Riccardo Ghidoni ◽  
Anna Caretti ◽  
Paola Signorelli
Keyword(s):  
Lung Surfactant ◽  
Immune Surveillance ◽  
Short Review ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
Inhaled Particles ◽  
Lung Structure ◽  
Surfactant Production ◽  
The Impact

Sphingolipid bioactivities in the respiratory airways and the roles of the proteins that handle them have been extensively investigated. Gas or inhaled particles or microorganisms come into contact with mucus components, epithelial cells, blood barrier, and immune surveillance within the airways. Lung structure and functionality rely on a complex interplay of polar and hydrophobic structures forming the surfactant layer and governing external-internal exchanges, such as glycerol-phospholipids sphingolipids and proteins. Sphingolipids act as important signaling mediators involved in the control of cell survival and stress response, as well as secreted molecules endowed with inflammation-regulatory activities. Most successful respiratory infection and injuries evolve in the alveolar compartment, the critical lung functional unit involved in gas exchange. Sphingolipid altered metabolism in this compartment is closely related to inflammatory reaction and ceramide increase, in particular, favors the switch to pathological hyperinflammation. This short review explores a few mechanisms underlying sphingolipid involvement in the healthy lung (surfactant production and endothelial barrier maintenance) and in a selection of lung pathologies in which the impact of sphingolipid synthesis and metabolism is most apparent, such as acute lung injury, or chronic pathologies such as cystic fibrosis and chronic obstructive pulmonary disease.

scholarly journals Understanding the role of neutrophils in chronic inflammatory airway disease

F1000Research ◽  
2019 ◽  
Vol 8 ◽  
pp. 557 ◽  
Author(s):  
Alice E Jasper ◽  
William J McIver ◽  
Elizabeth Sapey ◽  
Georgia M Walton
Keyword(s):  
Cystic Fibrosis ◽  
Immune Cell ◽  
Pulmonary Inflammation ◽  
Neutrophil Migration ◽  
Airway Disease ◽  
Chronic Obstructive ◽  
Pathological Features ◽  
Obstructive Pulmonary Disease ◽  
Species Production

Airway neutrophilia is a common feature of many chronic inflammatory lung diseases and is associated with disease progression, often regardless of the initiating cause. Neutrophils and their products are thought to be key mediators of the inflammatory changes in the airways of patients with chronic obstructive pulmonary disease (COPD) and have been shown to cause many of the pathological features associated with disease, including emphysema and mucus hypersecretion. Patients with COPD also have high rates of bacterial colonisation and recurrent infective exacerbations, suggesting that neutrophil host defence mechanisms are impaired, a concept supported by studies showing alterations to neutrophil migration, degranulation and reactive oxygen species production in cells isolated from patients with COPD. Although the role of neutrophils is best described in COPD, many of the pathological features of this disease are not unique to COPD and also feature in other chronic inflammatory airway diseases, including asthma, cystic fibrosis, alpha-1 anti-trypsin deficiency, and bronchiectasis. There is increasing evidence for immune cell dysfunction contributing to inflammation in many of these diseases, focusing interest on the neutrophil as a key driver of pulmonary inflammation and a potential therapeutic target than spans diseases. This review discusses the evidence for neutrophilic involvement in COPD and also considers their roles in alpha-1 anti-trypsin deficiency, bronchiectasis, asthma, and cystic fibrosis. We provide an in-depth assessment of the role of the neutrophil in each of these conditions, exploring recent advances in understanding, and finally discussing the possibility of common mechanisms across diseases.

scholarly journals The role of counterinsular hormones in the regulation of glucose homeostasis and the pathogenesis of type 2 diabetes mellitus in COPD

2021 ◽  
Vol 67 (2) ◽  
pp. 93-101
Author(s):  
V. I. Kobylyansky
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Significant Role ◽  
Glucose Homeostasis ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
The Impact

The frequent combination of type 2 diabetes mellitus (T2DM) and chronic obstructive pulmonary disease (COPD) is an important socially significant and far from being studied problem. However, only a few works are devoted to it. To solve this problem, we analyzed the possible pathogenetic mechanisms from the standpoint of the impact on glucose homeostasis of the main hormones — insular and contrainsular.The analysis was carried out using various literature databases, including Index Medicus, Scopus, Pub Med, Embase, Cochrane and others for the period, with rare exceptions, for 2000–2020, of which the works devoted directly to the aspect considered in this work were published in the last 5 years.The analysis revealed a mutual aggravating effect of COPD and T2DM, in which COPD plays an initiating role. It also revealed a significant role of counterinsular hormones, which largely determines the nature of the pathogenesis of T2DM in COPD.In addition, the article draws attention to the possible role of genetic factors that can be common for COPD and T2DM and have a significant role in the comorbidity of COPD and T2DM. The data obtained can be used for both diagnostic and therapeutic purposes in the correction of disorders of carbohydrate metabolism in COPD, which is the lot of further research.

scholarly journals Eosinophilic inflammation in chronic obstructive pulmonary disease

2019 ◽  
Vol 91 (10) ◽  
pp. 144-152
Author(s):  
S N Avdeev ◽  
N V Trushenko ◽  
Z M Merzhoeva ◽  
M S Ivanova ◽  
E V Kusraeva
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Targeted Therapy ◽  
Pulmonary Disease ◽  
Clinical Manifestations ◽  
Chronic Obstructive ◽  
Eosinophilic Inflammation ◽  
Obstructive Pulmonary Disease ◽  
Pathophysiological Mechanisms ◽  
The Impact

Chronic obstructive pulmonary disease (COPD) is a heterogeneous disease that combines various clinical manifestations and pathophysiological mechanisms. It underlies the separation of patients with COPD by phenotypes, endotypes and a personalized therapy of this disease. The implementation of this approach is possible only with the use of appropriate biomarkers. One of the most important biomarkers of COPD is eosinophilia of blood and/or sputum, which is considered as a predictor of frequent exacerbations and the effectiveness of inhaled glucocorticosteroids in patients with COPD. The literature discusses the impact of eosinophilic inflammation on the prognosis, clinical and functional parameters in COPD, and the role of the targeted therapy in the treatment of eosinophilic COPD.

scholarly journals The Role of the Pharmacist in Optimizing Outcomes With Roflumilast, a PDE4 Inhibitor for the Treatment of COPD

2020 ◽  
pp. 089719002096928
Author(s):  
Dennis Williams
Keyword(s):  
Patient Education ◽  
Airflow Limitation ◽  
Pde4 Inhibitor ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
Acute Exacerbations ◽  
Related Quality ◽  
Health Related ◽  
The Impact

Purpose The pharmacology of roflumilast, recent dosing revisions, and the integral roles of pharmacists in effective chronic obstructive pulmonary disease (COPD) management are reviewed here. Summary COPD is characterized by progressive airflow limitation and intermittent acute exacerbations of symptoms, which contribute to disease progression, worsening of comorbidities, and reduced health-related quality of life. Patients with COPD may use a variety of pharmacotherapies (in combination with nonpharmacological modalities) to prevent exacerbations, reduce the impact of symptoms, and reduce or prevent COPD progression. Given the complex and multifaceted nature of disease management, pharmacists are uniquely positioned to collaborate with other clinicians to improve treatment adherence and efficacy via a number of diverse avenues in patients with COPD. Central to this endeavor is patient education and counseling regarding their treatment regimen. Conclusion Recent findings from a phase 3 clinical trial demonstrate improved tolerability and reduced treatment discontinuation resulting from the use of an uptitration regimen in patients with severe COPD who initiate therapy with roflumilast. Pharmacists have a central role in effective COPD management, especially with respect to patient education about treatments.

scholarly journals Redox Dysregulation in Aging and COPD: Role of NOX Enzymes and Implications for Antioxidant Strategies

Antioxidants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1799
Author(s):  
Caspar Schiffers ◽  
Niki L. Reynaert ◽  
Emiel F. M. Wouters ◽  
Albert van der Vliet
Keyword(s):  
Lung Disease ◽  
Lung Diseases ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
Antioxidant Responses ◽  
Related Disease ◽  
Age Related ◽  
The Impact ◽  
Important Enzyme

With a rapidly growing elderly human population, the incidence of age-related lung diseases such as chronic obstructive pulmonary disease (COPD) continues to rise. It is widely believed that reactive oxygen species (ROS) play an important role in ageing and in age-related disease, and approaches of antioxidant supplementation have been touted as useful strategies to mitigate age-related disease progression, although success of such strategies has been very limited to date. Involvement of ROS in ageing is largely attributed to mitochondrial dysfunction and impaired adaptive antioxidant responses. NADPH oxidase (NOX) enzymes represent an important enzyme family that generates ROS in a regulated fashion for purposes of oxidative host defense and redox-based signalling, however, the associations of NOX enzymes with lung ageing or age-related lung disease have to date only been minimally addressed. The present review will focus on our current understanding of the impact of ageing on NOX biology and its consequences for age-related lung disease, particularly COPD, and will also discuss the implications of altered NOX biology for current and future antioxidant-based strategies aimed at treating these diseases.

scholarly journals Role of Depression in Chronic Obstructive Pulmonary Disease Patients

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Aishwarya Gowda MB ◽  
Sayoojya R Nair ◽  
Shefali Deo ◽  
Norah H Vanlalhriatmawii ◽  
Mohammed Numanuddin ◽  
...  
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Pulmonary Disease ◽  
Cardiovascular Complications ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
Bode Index ◽  
Appropriate Treatment ◽  
Chronic Smoking ◽  
The Impact

AbstractChronic obstructive pulmonary disease is a progressive lung disease characterized by chronic obstruction of the lung airflow that interferes with normal bleeding and is not fully reversible. Chronic smoking is the most common risk factor for COPD causing severe cough, wheezing, labored breathing and reduced functionality. COPD not only exerts pulmonary symptoms but also has a spill over the extra pulmonary effects. Owing to the impact of the disease, it may lead to conditions like osteoporosis, cardiovascular complications as well as to psychological effects such as depression and anxiety. Such comorbidities are hidden and are not effectively treated. Depression, one of the most common hidden comorbidities is known to be present but never diagnosed. Various scales like HAM-D and Bode Index can be used to diagnose the extent of depression. Our review mainly focuses on the various studies conducted worldwide and comparing the results of the same. Based on the worldwide analysis, depression is known to affect a COPD patient at later stages and requires immediate diagnosis and appropriate treatment.

Role of exhaled nitric oxide in predicting steroid response in chronic obstructive pulmonary disease

2010 ◽  
Vol 151 (51) ◽  
pp. 2083-2088 ◽  
Author(s):  
Balázs Antus
Keyword(s):  
Nitric Oxide ◽  
Chronic Obstructive Pulmonary Disease ◽  
Pulmonary Disease ◽  
Exhaled Nitric Oxide ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
Steroid Response

A kilégzett levegőben mérhető nitrogén-monoxid a legszélesebb körben vizsgált légúti biomarker. A stabil állapotú krónikus obstruktív tüdőbetegségben a kilégzett nitrogén-monoxid-szint hasonló vagy csak kismértékben emelkedett az egészségesekhez képest. Mivel a nitrogén-monoxid-szint szoros összefüggést mutat a légúti eosinophilia mértékével, és mivel az eosinophil típusú légúti gyulladás szteroidokra érzékenyebb, az emelkedett nitrogén-monoxid-szinttel rendelkező betegek jobb válaszkészséget mutatnak az inhalációs vagy szisztémás kortikoszteroidkezelésre. A krónikus obstruktív tüdőbetegség akut exacerbatiója során a kilégzett nitrogén-monoxid szintje megemelkedik, majd ennek kezelése után csökken. Mivel a nitrogén-monoxid-szint és a kezelés során elért légzésfunkciós javulás szoros korrelációt mutat egymással, a nitrogén-monoxid-méréssel a terápiás válasz megjósolható. Összefoglalva: a nitrogén-monoxid-méréssel a krónikus obstruktív tüdőbetegségben szenvedő betegek olyan alcsoportját lehet elkülöníteni, amelynek szteroidérzékenysége nagyobb. Orv. Hetil., 2010, 151, 2083–2088.

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