International Journal of Chronic Obstructive Pulmonary Disease最新文献

{"title":"Circular RNA_0025843 Alleviated Cigarette Smoke Extract Induced Bronchoalveolar Epithelial Cells Ferroptosis","authors":"Jia Chen, Xiaoyu Deng, Hansheng Xie, Caiyun Wang, Jiefeng Huang, Ningfang Lian","doi":"10.2147/copd.s444402","DOIUrl":"https://doi.org/10.2147/copd.s444402","url":null,"abstract":"<strong>Purpose:</strong> Circular RNA (circRNA) plays an important role in various biological processes. However, their functions in cigarette smoke extract (CSE) induced human normal lung epithelial cells (BEAS-2B) injury remain vague. The study aimed to explore circRNA expression profiles and reveal their potential roles in CSE-treated BEAS-2B cells.<br/><strong>Methods:</strong> 5% CSE exposure for 24 hours were used to build the BEAS-2B cells ferroptosis model. Differentially expressed circRNAs (DECs) were identified by next-generation RNA sequencing. Six randomly selected DECs were validated via quantitative reverse transcription polymerase chain reaction (qRT-PCR). Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis and Gene Ontology (GO) analysis were conducted to clarify the potential functions of the DECs. Furthermore, the role of hsa_circ_0025843 in CSE-related BEAS-2B cells ferroptosis was confirmed.<br/><strong>Results:</strong> 5% CSE exposure induced BEAS-2B cells ferroptosis. Fifty-one up-regulated cirRNAs and 80 down-regulated circRNAs were revealed in CSE-treated BEAS-2B cells. Hsa_circ_0003461, hsa_circ_0007548, hsa_circ_0025843, hsa_circ_0068896, hsa_circ_0005832, and hsa_circ_0053378 were selected randomly to validate the reliability of next-generation RNA sequencing by qRT-PCR. After KEGG pathway analysis, DECs were found to participate in the process of EGFR tyrosine kinase inhibitor resistance and glycerophospholipid metabolism. The knockdown of hsa_circ_0025843 significantly alleviated CSE-induced BEAS-2B cells ferroptosis.<br/><strong>Conclusion:</strong> The study indicated the circRNA expression profiles in CSE-treated BEAS-2B cells. Hsa_circ_0025843 alleviated CSE induced BEAS-2B cells ferroptosis, which might be a potential therapeutic target of CSE related lung injury.<br/><br/><strong>Keywords:</strong> cigarette smoke extract, Circular RNA, next-generation RNA sequencing, lung injury, ferroptosis<br/>","PeriodicalId":13792,"journal":{"name":"International Journal of Chronic Obstructive Pulmonary Disease","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139664817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Alpha-1 Antitrypsin Gene Variants in Patients without Severe Deficiency Diagnosed with Pulmonary Emphysema on Chest CT","authors":"Eduardo Laviña, Sara Lumbreras, Lara Bravo, Joan B Soriano, José Luis Izquierdo, Jose Miguel Rodríguez","doi":"10.2147/copd.s448593","DOIUrl":"https://doi.org/10.2147/copd.s448593","url":null,"abstract":"<strong>Introduction:</strong> Although pulmonary involvement due to alpha-1 antitrypsin (AAT) deficiency has been widely described, most studies focus on the genotypes causing severe deficiency (&lt; 60 mg/dL).<br/><strong>Objective:</strong> The aim of this study was to analyze the prevalence of the different AAT gene variants that do not cause severe deficiency in patients with pulmonary emphysema diagnosed by thoracic computed tomography (CT). Furthermore, we assessed the risk associated with a non-severe decrease in AAT values in the pathogenesis of emphysema.<br/><strong>Methods:</strong> Case-control study design that included patients who had a CT scan available of the entire thorax. In total, 176 patients with emphysema (cases) and 100 control subjects without emphysema were analyzed.<br/><strong>Results:</strong> The prevalence of variants was higher among cases (25.6%; 45/176) than controls (22%; 22/100), although the difference was not statistically significant (P=0.504) when analyzed globally. In the control group, all the variants detected were MS. Excluding this variant, statistically significant differences were observed in the remaining variants (MZ, SS and SZ). Only 18% of the controls (all MS) presented values below our limit of normality, and all had values very close to the reference value (90 mg/dL). In contrast, 76% of patients with the other variants presented pathological levels. In a logistic regression model, both smoking and a non-severe reduction in AAT (60 to 90 mg/dL) increased the probability of emphysema.<br/><strong>Conclusion:</strong> Our study confirms an association between certain variants in the alpha-1 antitrypsin gene that do not cause severe deficiency and the presence of pulmonary emphysema. This association with variants that are associated with reductions in serum AAT values is statistically significant and independent of smoking habit.<br/><br/><strong>Keywords:</strong> emphysema, alpha-1 antitrypsin, deficiency, variants<br/>","PeriodicalId":13792,"journal":{"name":"International Journal of Chronic Obstructive Pulmonary Disease","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139664847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Association of Chronic Obstructive Pulmonary Disease with Risk of Psychiatric Disorders: A Two-Sample Mendelian Randomization Study","authors":"Qinxia Zhang, Haifu Zhang, Qinxing Xu","doi":"10.2147/copd.s442725","DOIUrl":"https://doi.org/10.2147/copd.s442725","url":null,"abstract":"<strong>Background:</strong> Chronic obstructive pulmonary disease (COPD) is a prevalent respiratory disorder often accompanied by comorbidities. Although the past few years have witnessed significant scientific progress, the potential relationship between COPD and mental illness remains a subject of debate.<br/><strong>Materials and Methods:</strong> We retrieved COPD data from the genome-wide association studies (GWAS) directory and data on mental illnesses, including Alzheimer’s disease, schizophrenia, panic disorder, attention deficit hyperactivity disorder (ADHD), bipolar disorder, major depressive disorder, multiple disabilities, obsessive-compulsive disorder, post-traumatic stress disorder, and schizophrenia, from the Psychiatric Genomics Consortium. A two-sample Mendelian randomization (MR) approach was applied to explore the association between COPD and mental illnesses, with subgroup analyses based on smoking history.<br/><strong>Results:</strong> Our two-sample MR analysis revealed no causal link between overall COPD and the development of common psychiatric disorders. Subgroup analyses based on smoking history showed no causal association between never-smokers with COPD and the occurrence of psychiatric disorders. However, ever-smokers with COPD were associated with a significantly increased risk of ADHD (OR: 2.303, 95% CI: 1.558– 3.403, P = 0.001) and a modestly reduced risk of Alzheimer’s disease (OR: 0.994, 95% CI: 0.988– 0.999, P = 0.034).<br/><strong>Conclusion:</strong> COPD patients with a history of smoking face a higher risk of developing ADHD but may experience a slight reduction in the risk of Alzheimer’s disease. Conversely, there was no observed causal association between COPD and psychiatric disorders among patients who never smoked.<br/><br/>","PeriodicalId":13792,"journal":{"name":"International Journal of Chronic Obstructive Pulmonary Disease","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139658845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Addressing Barriers to Chronic Obstructive Pulmonary Disease (COPD) Care: Three Innovative Evidence-Based Approaches: A Review","authors":"Damian Chi Hong Siu, Liat Gafni-Lachter","doi":"10.2147/copd.s426050","DOIUrl":"https://doi.org/10.2147/copd.s426050","url":null,"abstract":"<strong>Abstract:</strong> Chronic obstructive pulmonary disease (COPD) is a preventable yet widespread and profoundly debilitating respiratory condition, exerting substantial personal and global health ramifications alongside significant economic implications. The first objective of this literature review was to identify reviews the barriers to optimal COPD care, categorizing them into personal patient factors, professional awareness and knowledge, patient-professional relationships, and healthcare service models, including access to care that significantly impacts the quality of COPD management. The second objective was to introduce three approaches for enhancing COPD care outcomes: Self-Management Educational Programs, Health Qigong, and Telehealth service provision, each demonstrating positive effects on COPD patients’ health status. These evidence-based interventions offer promising avenues for enhancing COPD care and patient outcomes. Integrating these approaches into comprehensive COPD management strategies holds potential for improving the well-being and quality of life of individuals living with this chronic condition.<br/><br/><strong>Keywords:</strong> pulmonary disease, chronic obstructive, health qigong, telehealth, self-management education<br/>","PeriodicalId":13792,"journal":{"name":"International Journal of Chronic Obstructive Pulmonary Disease","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139658865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lung Ultrasound Assessment of Lung Hyperinflation in Patients with Stable COPD: An Effective Diagnostic Tool","authors":"Yongjian Chen, Jingyun Li, Zhixing Zhu, Guorong Lyu","doi":"10.2147/copd.s441374","DOIUrl":"https://doi.org/10.2147/copd.s441374","url":null,"abstract":"<strong>Purpose:</strong> To evaluate the degree of lung hyperinflation (LH) in patients with stable chronic obstructive pulmonary disease (COPD) by lung ultrasound score (LUS) and assess its value.<br/><strong>Patients and Methods:</strong> We conducted a study of 149 patients with stable COPD and 100 healthy controls recruited by the Second Affiliated Hospital of Fujian Medical University. The pleural sliding displacement (PSD) was measured, the sliding of the pleura in different areas was observed, and LUS was calculated from both of them. The diaphragm excursion (DE), residual capacity (RV), total lung capacity (TLC), inspiratory capacity (IC) and functional residual capacity (FRC) were measured. We described the correlation between ultrasound indicators and pulmonary function indicators reflecting LH. Multiple linear regression analysis was used. The ROC curves of LUS and DE were drawn to evaluate their diagnostic efficacy, and De Long method was used for comparison.<br/><strong>Results:</strong> (1) The LUS of patients with stable COPD were positively correlated with RV, TLC, RV/TLC and FRC and negatively correlated with IC and IC/TLC (<em>r</em>₁=0.72, <em>r</em>₂=0.41, <em>r</em>₃=0.72, <em>r</em>₄=0.70, <em>r</em>₅=− 0.56, <em>r</em>₆=− 0.65, <em>P</em> &lt; 0.001). The correlation was stronger than that between DE at maximal deep inspiration and the corresponding pulmonary function indices (<em>r</em>₁=− 0.41, <em>r</em>₂=− 0.26, <em>r</em>₃=− 0.40, <em>r</em>₄=− 0.43, <em>r</em>₅=0.30, <em>r</em>₆=0.37, <em>P</em> &lt; 0.001). (2) Multiple linear regression analysis showed that LUS were significantly correlated with IC/TLC and RV/TLC. (3) With IC/TLC&lt; 25% and RV/TLC&gt; 60% as the diagnostic criterion of severe LH, the areas under the ROC curves of LUS and DE at maximal deep inspiration for diagnosing severe LH were 0.914 and 0.385, 0.845 and 0.543, respectively (<em>P</em> &lt; 0.001).<br/><strong>Conclusion:</strong> The lung ultrasound score is an important parameter for evaluating LH. LUS is better than DE at maximal deep inspiration for diagnosing severe LH and is expected to become an effective auxiliary tool for evaluating LH.<br/><br/><strong>Keywords:</strong> chronic obstructive pulmonary disease, lung hyperinflation, ultrasound, pleural sliding displacement, pulmonary function<br/>","PeriodicalId":13792,"journal":{"name":"International Journal of Chronic Obstructive Pulmonary Disease","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139578955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ApoA1, ApoB, ApoA1/B for Pathogenic Prediction of Chronic Obstructive Pulmonary Disease Complicated by Acute Lower Respiratory Tract Infection: A Cross-Sectional Study","authors":"Jiaqi Meng, Weichang Yang, Ziyong Chen, Caixia Pei, Xinmin Peng, Can Li, Fengyuan Li","doi":"10.2147/copd.s441503","DOIUrl":"https://doi.org/10.2147/copd.s441503","url":null,"abstract":"<strong>Purpose:</strong> To investigate the value of apolipoprotein A1 (ApoA1), apolipoprotein B (ApoB), and ApoA1/B ratio in pathogenic diagnosis of chronic obstructive pulmonary disease (COPD) complicated by acute lower respiratory tract infection, assisting comprehensive disease assessment.<br/><strong>Patients and Methods:</strong> The study enrolled 171 COPD patients with acute lower respiratory tract infections, 35 COPD patients without acute lower respiratory tract infections, and 41 healthy controls. Correlation analysis and binary logistic regression were used to assess the roles of various factors in COPD with acute lower respiratory tract infections. Receiver operating characteristic (ROC) curves were plotted and area under curves (AUC) values were calculated to evaluate the predictive performance.<br/><strong>Results:</strong> Infections were the cause of alterations in ApoA1, ApoB and ApoA1/B index. In correlation analysis for pathogenic diagnosis of COPD complicated by acute lower respiratory infections, age, ApoA1, ApoA1/B ratio, lymphocyte count (LYMPH), neutrophil count (NEUT), C-reactive protein (CRP), erythrocyte sedimentation rate (ESR) and endotoxin were significantly correlated. For predicting COPD complicated by acute lower respiratory tract bacterial infection, ApoA1 had the highest area under the ROC curve (AUC: 0.889), with sensitivity and specificity of 82.9% and 83.9%, respectively. The combination of NEUT and ApoA1 improved the prediction efficacy (AUC: 0.909; sensitivity/specificity: 85.1%/85.7%).<br/><strong>Conclusion:</strong> ApoA1, ApoB, and ApoA1/B ratio are good indicators for predicting pathogens in COPD complicated by acute lower respiratory tract infection, especially ApoA1 which has high predictive value.<br/><br/><strong>Keywords:</strong> ApoA1, ApoB, ApoA1/B, COPD, Acute lower respiratory tract infection, pathogens<br/>","PeriodicalId":13792,"journal":{"name":"International Journal of Chronic Obstructive Pulmonary Disease","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring a Potential Causal Link Between Dietary Intake and Chronic Obstructive Pulmonary Disease: A Two-Sample Mendelian Randomization Study","authors":"Chenwei Zhang, Lu Yu, Tao Xiong, Yukai Zhang, Juan Liu, Jingfen Zhang, Peiyun He, Yujia Xi, Yi Jiang","doi":"10.2147/copd.s445706","DOIUrl":"https://doi.org/10.2147/copd.s445706","url":null,"abstract":"<strong>Background:</strong> Chronic Obstructive Pulmonary Disease (COPD), the most prevalent chronic respiratory condition, significantly impairs patients’ quality of life. The pivotal element in disease management lies in prevention, underscoring the paramount importance of employing a scientific approach to investigate early prevention strategies for COPD.<br/><strong>Methods:</strong> This study delved into the causal link between 28 dietary intakes and COPD employing two-sample Mendelian randomization. We primarily utilized the Inverse Variance Weighted (IVW) method as the main outcome, complemented by Weighted Median (WM), MR-Egger method, along with several sensitivity analysis techniques, all accompanied by visual representations.<br/><strong>Results:</strong> We identified higher odds of COPD following exposure to green beans (OR=1.381, 95% CI=1.119– 1.704, P=0.003) and pork intake (OR=2.657, 95% CI=1.203– 5.868, P=0.016). In contrast, the odds of developing COPD were lower following exposure to dried fruit (OR=0.481, 95% CI=0.283– 0.819, P=0.007), cereal (OR=0.560, 95% CI=0.356– 0.880, P=0.012), and whole egg consumption (OR=0.700, 95% CI=0.504– 0.972, P=0.033).<br/><strong>Conclusion:</strong> In light of our study’s findings, we anticipate that strategically modifying dietary choices may offer an avenue for early COPD prevention in the future.<br/><br/>","PeriodicalId":13792,"journal":{"name":"International Journal of Chronic Obstructive Pulmonary Disease","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139552407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Real-World Disease Burden and Healthcare Resource Utilization Among Patients with COPD and Asthma Using Triple Therapy (FF/UMEC/VI) in the United States","authors":"Emmeline Igboekwe, Sumit Verma, Rosirene Paczkowski","doi":"10.2147/copd.s423993","DOIUrl":"https://doi.org/10.2147/copd.s423993","url":null,"abstract":"<strong>Purpose:</strong> Chronic obstructive pulmonary disease (COPD) and asthma are associated with chronic inflammation of the respiratory tract; despite some overlap of symptoms, they are considered separate disorders. Triple therapy is recommended for patients with COPD and asthma whose symptoms remain uncontrolled despite dual therapy. There are limited real-world studies evaluating outcomes among patients with COPD and asthma who are receiving inhaled triple therapy. This United States (US)-based real-world study aimed to evaluate clinical and economic outcomes among patients with COPD and asthma receiving single-inhaler triple therapy (fluticasone furoate/umeclidinium/vilanterol [FF/UMEC/VI]).<br/><strong>Patients and Methods:</strong> Retrospective pre-post study using claims data from the Optum Clinformatics^® database. Patients with COPD and asthma were indexed on the first date of FF/UMEC/VI prescription (1 October 2017– 31 March 2019). Each patient acted as their own control. Patients were required to have continuous health plan enrollment for 12 months prior to (pre-treatment) and following (post-treatment) index. Exacerbations, all-cause and COPD-related healthcare resource utilization, and costs were compared before and after FF/UMEC/VI initiation.<br/><strong>Results:</strong> Overall, 2743 patients were included (mean age: 71 years; 64% female). Cardiovascular disease was the most prevalent comorbidity during both the pre- and post-treatment periods (90% for both periods). There was a lower proportion of patients with ≥ 1 COPD exacerbation or ≥ 1 asthma exacerbation post-treatment versus pre-treatment (51% vs 57%, p&lt; 0.0001, and 22% vs 32%, p&lt; 0.0001, respectively). Fewer patients had ≥ 1 all-cause office visit post-treatment versus pre-treatment (99.3% vs 99.7%, p=0.0329); more patients had ≥ 1 COPD-related office visit post-treatment versus pre-treatment (89.6% vs 87.5%, p=0.0035). Total all-cause healthcare costs were significantly higher post-treatment versus pre-treatment (&amp;dollar72,809 vs &amp;dollar63,734, p&lt; 0.0001). The driver of increased costs appeared to be primarily non-COPD-related (COPD-related costs: post-treatment &amp;dollar27,779 vs pre-treatment &amp;dollar25,081, p=0.0062).<br/><strong>Conclusion:</strong> FF/UMEC/VI reduced exacerbations among patients with COPD and asthma in a real-world setting in the US.<br/><br/><strong>Plain Language Summary:</strong> Chronic obstructive pulmonary disease (COPD) and asthma are different respiratory conditions that have similar symptoms. Patients can be diagnosed with both conditions at the same time. A flare-up of COPD or asthma symptoms can lead to a lung attack, which can result in hospitalization and a considerable decline in patient health as well as being associated with high healthcare resource use and costs.<br/>An inhaler with three different medicines (fluticasone furoate, umeclidinium, and vilanterol; shortened to FF/UMEC/VI) can be pre","PeriodicalId":13792,"journal":{"name":"International Journal of Chronic Obstructive Pulmonary Disease","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139552411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MTOR Suppresses Cigarette Smoke-Induced Airway Inflammation and MMP12 Expression in Macrophage in Chronic Obstructive Pulmonary Disease","authors":"Lingling Dong, Yong Wang, Haipin Chen, Zhouyang Li, Xuchen Xu, Jiesen Zhou, Huahao Shen, Zhihua Chen","doi":"10.2147/copd.s426333","DOIUrl":"https://doi.org/10.2147/copd.s426333","url":null,"abstract":"<strong>Background:</strong> Macrophage-derived matrix metalloproteinase 12 (MMP12) can cause destruction of lung tissue structure and plays a significant role in the development and progression of chronic obstructive pulmonary disease (COPD). MTOR is a serine/threonine kinase that plays a crucial role in cell growth and metabolism. The activity of MTOR in the lung tissues of COPD patients also shows significant changes. However, it is unclear whether MTOR can regulate the development and progression of COPD by controlling MMP12. This study primarily investigates whether MTOR in macrophages can affect the expression of MMP12 and participate in the progression of COPD.<br/><strong>Methods:</strong> We tested the changes in MTOR activity in macrophages exposed to cigarette smoke (CS) both in vivo and in vitro. Additionally, we observed the effect of MTOR on the expression of MMP12 in macrophages and on lung tissue inflammation and structural damage in mice, both in vivo and in vitro, using MTOR inhibitors or gene knockout mice. Finally, we combined inhibitor treatment with gene knockout to demonstrate that MTOR primarily mediates the expression of MMP12 through the NF-κB signaling pathway.<br/><strong>Results:</strong> Exposure to CS can enhance MTOR activity in mouse alveolar macrophages. Inhibiting the activity of MTOR or suppressing its expression leads to increased expression of MMP12. Myeloid-specific knockout of MTOR expression can promote the occurrence of CS-induced pulmonary inflammation and emphysema in mice. Inhibiting the activity of NF-κB can eliminate the effect of MTOR on MMP12.<br/><strong>Conclusion:</strong> Macrophage MTOR can reduce the expression of MMP12 by inhibiting NF-κB, thereby inhibiting the occurrence of COPD inflammation and destruction of lung tissue structure. Activating the activity of macrophage MTOR may be beneficial for the treatment of COPD.<br/><br/>","PeriodicalId":13792,"journal":{"name":"International Journal of Chronic Obstructive Pulmonary Disease","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139552592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of the Current State of COPD Nursing Based on a Bibliometric Approach from the Web of Science","authors":"Zheng Tian, Yachen Jiang, Nan Zhang, Zhijun Zhang, Lan Wang","doi":"10.2147/copd.s440715","DOIUrl":"https://doi.org/10.2147/copd.s440715","url":null,"abstract":"<strong>Background and Aim:</strong> COPD nursing plays a crucial role in alleviating disease symptoms, prolonging patient survival, and is therefore of paramount importance. However, authoritative research findings, research hotspots, and development trends in the field of COPD are still unclear. This study aimed to examine authoritative research findings, research hotspots, and trends in the field of COPD nursing. Descriptive statistics and bibliometric and visual analyses of the literature were conducted.<br/><strong>Methods:</strong> Bibliometric data were obtained from the Web of Science database. Citespace was used to explore publication trends, countries, institutions, journals, authors, keywords, and co-citation characteristics of the included literature in order to summarize the key research in the field of COPD nursing.<br/><strong>Results:</strong> In total, 693 articles on COPD nursing were published. 1998– 2014 showed a rapid growth period in this research field, which stabilized in 2015– 2022. The research content could mostly be summarized into five categories: acute exacerbation, quality of life, risk, evidence-based nursing, and pulmonary rehabilitation. The research hotspots in 1998– 2014 included randomized controlled trials, education, elderly patients, nursing home residents, nursing homes, rehabilitation, and prevalence. Research in 2015– 2022 focused on impact, palliative care, needs, and predictors. In recent years, research mainly concentrated on symptom management models, cost-effectiveness, and cumulative meta-analysis.<br/><strong>Conclusion:</strong> Bibliometric analysis of COPD nursing articles indicates that the focus of COPD nursing research is shifting from tertiary prevention to primary and secondary prevention. Helping patients achieve self-management of symptoms, reducing the financial burden of COPD on healthcare, and summarizing research evidence by meta-analyses will likely remain the focus of future research.<br/><br/><strong>Keywords:</strong> bibliometric analysis, COPD, nursing, Citespace, research hotspots<br/>","PeriodicalId":13792,"journal":{"name":"International Journal of Chronic Obstructive Pulmonary Disease","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139517585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}