1
|
Whittaker H, Rothnie KJ, Quint JK. Cause-specific mortality in COPD subpopulations: a cohort study of 339 647 people in England. Thorax 2024; 79:202-208. [PMID: 37328279 DOI: 10.1136/thorax-2022-219320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 05/03/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Identifying correlates of cause-specific mortality in patients with chronic obstructive pulmonary disease (COPD) may aid the targeting of therapies to reduce mortality. We determined factors associated with causes of death in a primary care COPD population. METHODS Clinical Practice Research Datalink Aurum was linked to Hospital Episode Statistics and death certificate data. People with COPD alive between 1 January 2010 and 1 January 2020 were included. Patient characteristics were defined before the start of follow-up: (a) frequency and severity of exacerbations; (b) emphysema or chronic bronchitis; (c) Global Obstructive Lung Disease (GOLD) groups A-D; and (d) airflow limitation. We used Cox Proportional Hazards regression and competing risks to investigate the association between patient characteristics and risk of all-cause, COPD and cardiovascular (CV) mortality. RESULTS 339 647 people with COPD were included of which 97 882 died during follow-up (25.7% COPD related and 23.3% CV related). Airflow limitation, GOLD group, exacerbation frequency and severity, and COPD phenotype were associated with all-cause mortality. Exacerbations, both increased frequency and severity, were associated with COPD-related mortality (≥2 exacerbations vs none adjusted HR: 1.64, 1.57-1.71; 1 severe vs none adjusted HR: 2.17, 2.04-2.31, respectively). Patients in GOLD groups B-D had a higher risk of COPD and CV mortality compared with GOLD group A (GOLD group D vs group A, adjusted HR for COPD mortality: 4.57, 4.23-4.93 and adjusted HR for CV mortality: 1.53, 1.41-1.65). Increasing airflow limitation was also associated with both COPD and CV mortality (GOLD 4 vs 1, adjusted HR: 12.63, 11.82-13.51 and adjusted HR: 1.75, 1.60-1.91, respectively). CONCLUSION Poorer airflow limitation, worse functional status and exacerbations had substantial associations with risk of all-cause mortality. Differing results for CV and COPD-related mortality suggests interventions to prevent mortality may need to target particular characteristics or time points in the disease course.
Collapse
Affiliation(s)
- Hannah Whittaker
- School of Public Health and National Heart and Lung Institute, Imperial College London, London, UK
| | - Kieran J Rothnie
- Department of Epidemiology, Value Evidence and Outcomes, Global Medical R&D, GlaxoSmithKline Plc, Brentford, UK
| | - Jennifer K Quint
- School of Public Health and National Heart and Lung Institute, Imperial College London, London, UK
| |
Collapse
|
2
|
Cui Y, Ma Y, Dai Z, Long Y, Chen Y. Does the 2017 global initiative for chronic obstructive lung disease revision really improve the assessment of Chinese chronic obstructive pulmonary disease patients? A multicenter prospective study for more than 5 years. Chin Med J (Engl) 2023; 136:2587-2595. [PMID: 37367695 PMCID: PMC10617920 DOI: 10.1097/cm9.0000000000002487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Indexed: 06/28/2023] Open
Abstract
BACKGROUND The Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2017 proposed a new classification that reclassified many chronic obstructive pulmonary disease (COPD) patients from group D to B. However, there is a paucity of data related to the comparison between reclassified and non-reclassified COPD patients in terms of long-term prognosis. This study aimed to investigate long-term outcomes of them and determine whether the GOLD 2017 revision improved the assessment of COPD patients. METHODS This observational, multicenter, prospective study recruited outpatients at 12 tertiary hospitals in China from November 2016 to February 2018 and followed them up until February 2022. All enrolled patients were classified into groups A to D based on GOLD 2017, and the subjects in group B included patients reclassified from group D to B (group DB) and those remaining in group B (group BB). Incidence rates and hazard ratios (HRs) were calculated for the exacerbation of COPD and hospitalization in each group. RESULTS We included and followed up 845 patients. During the first year of follow-up, the GOLD 2017 classification had a better discrimination ability for different risks of COPD exacerbation and hospitalization than GOLD 2013. Group DB was associated with a higher risk of moderate-to-severe exacerbation (HR = 1.88, 95% confidence interval [CI] = 1.37-2.59, P <0.001) and hospitalization for COPD exacerbation (HR = 2.23, 95% CI = 1.29-3.85, P = 0.004) than group BB. However, during the last year of follow-up, the differences in the risks of frequent exacerbations and hospitalizations between group DB and BB were not statistically significant (frequent exacerbations: HR = 1.02, 95% CI = 0.51-2.03, P = 0.955; frequent hospitalizations: HR = 1.66, 95% CI = 0.58-4.78, P = 0.348). The mortality rates of the two groups were both approximately 9.0% during the entire follow-up period. CONCLUSIONS The long-term prognosis of patients reclassified into group B and of those remaining in group B was similar, although patients reclassified from group D to group B had worse short-term outcomes. The GOLD 2017 revision could improve the assessment of Chinese COPD patients in terms of long-term prognosis.
Collapse
Affiliation(s)
- Yanan Cui
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Yiming Ma
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Zhongshang Dai
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Yingjiao Long
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China
| | - Yan Chen
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| |
Collapse
|
3
|
Vanfleteren LEGW, Lindberg A, Zhou C, Nyberg F, Stridsman C. Exacerbation Risk and Mortality in Global Initiative for Chronic Obstructive Lung Disease Group A and B Patients with and without Exacerbation History. Am J Respir Crit Care Med 2023; 208:163-175. [PMID: 37040482 DOI: 10.1164/rccm.202209-1774oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 04/10/2023] [Indexed: 04/13/2023] Open
Abstract
Rationale: Risk stratification of patients according to chronic obstructive pulmonary disease severity is clinically important and forms the basis of therapeutic recommendations. No studies have examined the association for Global Initiative for Chronic Obstructive Lung Disease (GOLD) group A and group B patients with (A1 and B1, respectively) and without (A0 and B0, respectively) an exacerbation in the past year with future exacerbations, hospitalizations, and mortality in perspective with the new GOLD ABE classification. Objectives: The aim was to examine the association between GOLD A0, A1, B0, B1, and E patients and future exacerbations, respiratory and cardiovascular hospitalizations, and mortality. Methods: In this nationwide cohort study, we identified patients with a diagnosis of chronic obstructive pulmonary disease, aged ⩾30 years, and registered in the Swedish National Airway Register between January 2017 and August 2020. Patients were stratified in GOLD groups A0, A1, B0, B1, and E and were followed until January 2021 for exacerbations, hospitalizations, and mortality in national registries. Measurements and Main Results: The 45,350 eligible patients included 25% A0, 4% A1, 44% B0, 10% B1, and 17% E. Moderate exacerbations, all-cause and respiratory hospitalizations, and all-cause and respiratory mortality increased by GOLD group A0-A1-B0-B1-E, except for moderate exacerbations, which were higher in A1 than in B0. Group B1 had a substantially higher hazard ratio for future exacerbation (2.56; 95% confidence interval [95% CI] 2.40-2.74), all-cause hospitalization (1.28; 1.21-1.35), and respiratory hospitalization (1.44; 1.27-1.62), but not all-cause (1.04; 0.91-1.18) or respiratory (1.13; 0.79-1.64) mortality than group B0. The exacerbation rate for group B1 was 0.6 events per patient-year versus 0.2 for group B0 (rate ratio, 2.55; 95% CI, 2.36-2.76). Results were similar for group A1 versus group A0. Conclusions: Stratification of GOLD A and B patients with one or no exacerbation in the past year provides valuable information on future risk, which should influence treatment recommendations for preventive strategies.
Collapse
Affiliation(s)
- Lowie E G W Vanfleteren
- COPD Center, Department of Respiratory Medicine and Allergology, Sahlgrenska University Hospital, Gothenburg, Sweden
- Department of Internal Medicine and Clinical Nutrition and
| | - Anne Lindberg
- Division of Medicine/The OLIN Unit, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden; and
| | - Caddie Zhou
- Center of Registers Västra Götaland, Gothenburg, Sweden
| | - Fredrik Nyberg
- School of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Caroline Stridsman
- Division of Medicine/The OLIN Unit, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden; and
| |
Collapse
|
4
|
Czira A, Purushotham S, Iheanacho I, Rothnie KJ, Compton C, Ismaila AS. Burden of Disease in Patients with Mild or Mild-to-Moderate Chronic Obstructive Pulmonary Disease (Global Initiative for Chronic Obstructive Lung Disease Group A or B): A Systematic Literature Review. Int J Chron Obstruct Pulmon Dis 2023; 18:719-731. [PMID: 37151760 PMCID: PMC10155715 DOI: 10.2147/copd.s394325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 04/06/2023] [Indexed: 05/09/2023] Open
Abstract
Background Patients with mild or mild-to-moderate chronic obstructive pulmonary disease (COPD), defined as Global Initiative for Chronic Obstructive Lung Disease (GOLD) group A/B, are regarded as having a lower risk of experiencing multiple or severe exacerbations compared with patients classified as GOLD group C/D. Current guidelines suggest that patients in GOLD A/B should commence treatment with a bronchodilator; however, some patients within this population who have a higher disease burden may benefit from earlier introduction of dual bronchodilator or inhaled corticosteroid-containing therapies. This study aimed to provide research-based insights into the burden of disease experienced by patients classified as GOLD A/B, and to identify characteristics associated with poorer outcomes. Methods A systematic literature review (SLR) was conducted to identify evidence (burden of disease and prevalence data) relating to the population of interest (patients with COPD classified as GOLD A/B). Results A total of 79 full-text publications and four conference abstracts were included. In general, the rates of moderate and severe exacerbations were higher among patients in GOLD group B than among those in group A. Among patients classified as GOLD A/B, the risk of exacerbation was higher in those with more symptoms (modified Medical Research Council or COPD Assessment Test scales) and more severe airflow limitation (forced expiratory volume in 1 second % predicted). Conclusion Data from this SLR provide clear evidence of a heavier burden of disease for patients in GOLD B, compared with those in GOLD A, and highlight factors associated with worse outcomes for patients in GOLD A/B.
Collapse
Affiliation(s)
- Alexandrosz Czira
- Value Evidence and Outcomes, R&D Global Medical, GSK, Brentford, UK
- Correspondence: Alexandrosz Czira, Value Evidence and Outcomes, R&D Global Medical, GSK, 980 Great West Road, Brentford, Middlesex, TW8 9GS, UK, Tel +44 7788 351610, Email
| | | | | | - Kieran J Rothnie
- Value Evidence and Outcomes, R&D Global Medical, GSK, Brentford, UK
| | | | - Afisi S Ismaila
- Value Evidence and Outcomes, GSK, Collegeville, PA, USA
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| |
Collapse
|
5
|
Chen Q, Lin J, Deng Z, Qian W. Exosomes derived from human umbilical cord mesenchymal stem cells protect against papain-induced emphysema by preventing apoptosis through activating VEGF-VEGFR2-mediated AKT and MEK/ERK pathways in rats. Regen Ther 2022; 21:216-224. [PMID: 36092502 PMCID: PMC9420880 DOI: 10.1016/j.reth.2022.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 06/25/2022] [Accepted: 07/07/2022] [Indexed: 12/04/2022] Open
Abstract
Introduction Chronic obstructive pulmonary disease (COPD) is a leading cause of high mortality and heavy burden in the world. Unfortunately, emphysema, as an important component of COPD, has no curative treatments currently. Recently, human umbilical cord mesenchymal stem cells-derived exosomes (hUCMSC-Ex) constitute a promising alternative approach for tissue regeneration and repair. However, the roles of hUCMSC-Ex in emphysema and its mechanism are largely unknown. Here, we investigated the effect and the action mechanism of hUCMSC-Ex in repairing emphysema induced by papain in rats. Methods SD rats were used to establish a papain-induced emphysema model and estimate the effect and mechanism of hUCMSC-Ex treatment. H&E staining and mean linear intercept (MLI) were used to evaluate the hUCMSC-Ex effect on emphysema. Western blotting, TUNEL and miRNA-seq were used to investigate the molecular mechanisms of hUCMSC-Ex treatment in models of papain-induced emphysema. Results Papain treatment led to typical emphysema, while hUCMSC-Ex reversed emphysematous changes effectively. Apoptosis of endothelial cells and other types of cells were observed in models, while hUCMSC-Ex effectively prevented their apoptosis. hUCMSC-Ex repressed active caspase-3, activated VEGF-VEGFR2-mediated AKT pathway and MEK/ERK pathway in emphysematous lungs. Notably, several miRNAs, such as hsa-miR-10a-5p and hsa-miR-146a-5p, were target related to the roles of hUCMSC-Ex in papain-induced emphysema through VEGF-VEGFR2-mediated AKT and MEK/ERK pathways. Conclusions hUCMSC-Ex effectively rescued the papain-induced emphysema injury through VEGF-VEGFR2-mediated AKT pathway and MEK/ERK pathway. Exosomes from human umbilical cord mesenchymal stem cells (hUCMSC-Ex) pro protect against papain-injured emphysema in rats. hUCMSC-Ex prevent lung cells apoptosis by activating VEGF-VEGFR2-mediated AKT and MEK/ERK pathways. Several miRNAs, such as hsa-miR-10a-5p, were target related to the roles of hUCMSC-Ex.
Collapse
Affiliation(s)
- Qin Chen
- Laboratory Center, Affiliated People's Hospital of Jiangsu University, Zhenjiang, China
| | - Jiang Lin
- Laboratory Center, Affiliated People's Hospital of Jiangsu University, Zhenjiang, China
| | - Zhaoqun Deng
- Laboratory Center, Affiliated People's Hospital of Jiangsu University, Zhenjiang, China
| | - Wei Qian
- Department of Otolaryngology-Head and Neck Surgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, China
- Corresponding author. Department of Otolaryngology-Head and Neck Surgery, Affiliated People's Hospital of Jiangsu University, Dianli RD. 8, Zhenjiang, Jiangsu Province, 212002, China.
| |
Collapse
|
6
|
Kotlyarov S. High-Density Lipoproteins: A Role in Inflammation in COPD. Int J Mol Sci 2022; 23:ijms23158128. [PMID: 35897703 PMCID: PMC9331387 DOI: 10.3390/ijms23158128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 07/19/2022] [Accepted: 07/21/2022] [Indexed: 02/04/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a widespread disease associated with high rates of disability and mortality. COPD is characterized by chronic inflammation in the bronchi as well as systemic inflammation, which contributes significantly to the clinically heterogeneous course of the disease. Lipid metabolism disorders are common in COPD, being a part of its pathogenesis. High-density lipoproteins (HDLs) are not only involved in lipid metabolism, but are also part of the organism’s immune and antioxidant defense. In addition, HDL is a versatile transport system for endogenous regulatory agents and is also involved in the removal of exogenous substances such as lipopolysaccharide. These functions, as well as information about lipoprotein metabolism disorders in COPD, allow a broader assessment of their role in the pathogenesis of heterogeneous and comorbid course of the disease.
Collapse
Affiliation(s)
- Stanislav Kotlyarov
- Department of Nursing, Ryazan State Medical University, 390026 Ryazan, Russia
| |
Collapse
|
7
|
Solidoro P, Albera C, Ribolla F, Bellocchia M, Brussino L, Patrucco F. Triple Therapy in COPD: Can We Welcome the Reduction in Cardiovascular Risk and Mortality? Front Med (Lausanne) 2022; 9:816843. [PMID: 35402466 PMCID: PMC8985817 DOI: 10.3389/fmed.2022.816843] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 01/27/2022] [Indexed: 11/13/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a complex disease which consists in the reduction of the airflow and leads to the disruption of the pulmonary tissue due to a chronic inflammation. The progression of the disease is characterized by an exacerbation of the symptoms and the presence of life-threatening systemic complications, such as stroke and ischemic heart disease, with a progressive decline in lung function which can deeply impact the quality of life. Mortality represents the most important COPD outcome, with an increased risk in patients with cardiovascular comorbidities. The efficacy and safety of triple inhaled therapy were demonstrated by numerous controlled trials. Above all, many robust data are now available on the effectiveness of the triple therapy to reduce mortality in COPD patients.
Collapse
Affiliation(s)
- Paolo Solidoro
- Division of University Respiratory Medicine, Cardiovascular and Thoracic Department, AOU Città della Salute e della Scienza di Torino, Turin, Italy
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Carlo Albera
- Division of University Respiratory Medicine, Cardiovascular and Thoracic Department, AOU Città della Salute e della Scienza di Torino, Turin, Italy
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Fulvia Ribolla
- Division of University Respiratory Medicine, Cardiovascular and Thoracic Department, AOU Città della Salute e della Scienza di Torino, Turin, Italy
| | - Michela Bellocchia
- Division of University Respiratory Medicine, Cardiovascular and Thoracic Department, AOU Città della Salute e della Scienza di Torino, Turin, Italy
| | - Luisa Brussino
- Department of Medical Sciences, University of Turin, Turin, Italy
- Allergy and Clinical Immunology Unit, AO Ordine Mauriziano Hospital, Turin, Italy
| | - Filippo Patrucco
- Division of Respiratory Diseases, Medical and Specialistic Department, AOU Maggiore della Carità, Novara, Italy
- Translational Medicine Department, University of Piemonte Orientale, Novara, Italy
- *Correspondence: Filippo Patrucco
| |
Collapse
|
8
|
Golpe R, Figueira-GonÇalves JM, Amado CA, Martín-Audera P, Esteban C, García-Talavera I, Dacal-Rivas D. A new, three-dimensional approach to the GOLD COPD assessment tool. Respir Med Res 2021; 81:100879. [PMID: 34954488 DOI: 10.1016/j.resmer.2021.100879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/24/2021] [Accepted: 11/26/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND The 2-dimensional, 4-quadrant 2017 Global Initiative for Chronic Obstructive Lung Disease (GOLD) COPD A-D assessment tool (GOLD2017) does not include lung function variables to classify patients into different risk groups. The previous 2011 tool (GOLD2011) classified cases in the upper-quadrants (higher risk groups) regardless of whether they had a history of exacerbations or worse lung function. We hypothesized that a modified, three-dimensional classification (GOLD3D) that separately includes assessment of lung function and exacerbations history would improve the ability to predict adverse events. METHODS A total of 1303 COPD patients were included in a historical cohort study. The ability of GOLD3D to predict outcomes (all-cause death and hospitalizations due to severe exacerbation) was compared with GOLD2017 and GOLD2011. RESULTS Mean follow-up was 45.0 ± 28.0 months. Two hundred and twenty-eight patients (17.5%) died and 337 (25.9%) subjects suffered at least a severe exacerbation that required hospital admission. The area under the receiver-operating characteristics curve for mortality prediction was slightly but significantly higher for GOLD3D than for GOLD2011. The area under the curve for prediction of severe exacerbations was significantly higher for GOLD3D than for GOLD2011 and GOLD2017. A worse ventilatory obstruction was associated in most cases with a higher mortality risk and a higher exacerbation risk for the GOLD2017 A-D groups. CONCLUSIONS The proposed GOLD3D classification system upgrades the previous ones, and is advantageous in predicting future adverse events.
Collapse
Affiliation(s)
- Rafael Golpe
- Servicio de Neumología, Hospital Universitario Lucus Augusti, Lugo, Spain; Grupo C039 Biodiscovery HULA-USC, Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS), Santiago de Compostela, Spain.
| | - Juan Marco Figueira-GonÇalves
- Servicio de Neumología y Cirugía Torácica, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain. University Institute of Tropical Diseases and Public Health of the Canary Islands, University of La Laguna, Santa Cruz de Tenerife, Spain
| | - Carlos A Amado
- Servicio de Neumología, Hospital Universitario Marqués de Valdecilla. Santander, Spain; Universidad de Cantabria, Instituto de investigación sanitaria de Cantabria IDIVAL, Spain
| | - Paula Martín-Audera
- Servicio de Análisis Clinicos, Hospital Universitario Marqués de Valdecilla. Santander, Spain
| | - Cristóbal Esteban
- Servicio de Neumología, Hospital Galdakao-Usansolo, Bizkaia, Spain; Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Hospital Galdakao-Usansolo, Bizkaia, Spain
| | - Ignacio García-Talavera
- Servicio de Neumología y Cirugía Torácica, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain. University Institute of Tropical Diseases and Public Health of the Canary Islands, University of La Laguna, Santa Cruz de Tenerife, Spain
| | - David Dacal-Rivas
- Servicio de Neumología, Hospital Universitario Lucus Augusti, Lugo, Spain
| |
Collapse
|
9
|
Chen XY, Chen YY, Lin W, Chen CH, Wen YC, Hsiao TC, Chou HC, Chung KF, Chuang HC. Therapeutic Potential of Human Umbilical Cord-Derived Mesenchymal Stem Cells in Recovering From Murine Pulmonary Emphysema Under Cigarette Smoke Exposure. Front Med (Lausanne) 2021; 8:713824. [PMID: 34646841 PMCID: PMC8502916 DOI: 10.3389/fmed.2021.713824] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 08/31/2021] [Indexed: 01/08/2023] Open
Abstract
Human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) were shown to have potential for immunoregulation and tissue repair. The objective of this study was to investigate the effects of hUC-MSCs on emphysema in chronic obstructive pulmonary disease (COPD). The C57BL/6JNarl mice were exposed to cigarette smoke (CS) for 4 months followed by administration of hUC-MSCs at 3 × 106 (low dose), 1 × 107 (medium dose), and 3 × 107 cells/kg body weight (high dose). The hUC-MSCs caused significant decreases in emphysema severity by measuring the mean linear intercept (MLI) and destructive index (DI). A decrease in neutrophils (%) and an increase in lymphocytes (%) in bronchoalveolar lavage fluid (BALF) were observed in emphysematous mice after hUC-MSC treatment. Lung levels of interleukin (IL)-1β, C-X-C motif chemokine ligand 1 (CXCL1)/keratinocyte chemoattractant (KC), and matrix metalloproteinase (MMP)-12 significantly decreased after hUC-MSC administration. Significant reductions in tumor necrosis factor (TNF)-α, IL-1β, and IL-17A in serum occurred after hUC-MSC administration. Notably, the cell viability of lung fibroblasts improved with hUC-MSCs after being treated with CS extract (CSE). Furthermore, the hUC-MSCs-conditioned medium (hUC-MSCs-CM) restored the contractile force, and increased messenger RNA expressions of elastin and fibronectin by lung fibroblasts. In conclusion, hUC-MSCs reduced inflammatory responses and emphysema severity in CS-induced emphysematous mice.
Collapse
Affiliation(s)
- Xiao-Yue Chen
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan.,School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yi-Ying Chen
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Willie Lin
- Meridigen Biotech Co., Ltd., Taipei, Taiwan
| | | | | | - Ta-Chih Hsiao
- Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, Taiwan
| | - Hsiu-Chu Chou
- Department of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Kian Fan Chung
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Hsiao-Chi Chuang
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| |
Collapse
|