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Huang HL, Lin CH, Lee MR, Huang WC, Sheu CC, Cheng MH, Lu PL, Huang CH, Yeh YT, Yang JM, Chong IW, Liao YC, Wang JY. Sputum bacterial microbiota signature as a surrogate for predicting disease progression of nontuberculous mycobacterial lung disease. Int J Infect Dis 2024:107085. [PMID: 38740280 DOI: 10.1016/j.ijid.2024.107085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 04/29/2024] [Accepted: 05/01/2024] [Indexed: 05/16/2024] Open
Abstract
OBJECTIVES Predicting progression of nontuberculous mycobacterial lung disease (NTM-LD) remains challenging. This study evaluated whether sputum bacterial microbiome diversity can be the biomarker and provide novel insights into related phenotypes and treatment timing. METHODS We analyzed 126 sputum microbiomes of 126 patients with newly diagnosed NTM-LD due to Mycobacterium avium complex, M. abscessus complex, and M. kansasii between May 2020 and December 2021. Patients were followed for 2 years to determine their disease progression status. We identified consistently representative genera that differentiated the progressor and nonprogressor by using six methodologies. These genera were used to construct a prediction model using random forest with 5-fold cross validation. RESULTS Disease progression occurred in 49 (38.6%) patients. Compared with nonprogressors, α-diversity was lower in the progressors. Significant compositional differences existed in the β-diversity between groups (p=0.001). The prediction model for NTM-LD progression constructed using seven genera (Burkholderia, Pseudomonas, Sphingomonas, Candidatus Saccharibacteria, Phocaeicola, Pelomonas, and Phascolarctobacterium) with significantly differential abundance achieved an area under curve of 0.871. CONCLUSIONS Identification of the composition of sputum bacterial microbiome facilitates prediction of the course of NTM-LD, and maybe used to develop precision treatment involving modulating the respiratory microbiome composition to ameliorate NTM-LD.
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Affiliation(s)
- Hung-Ling Huang
- Division of Pulmonary and Critical Care Medicine, Kaohsiung, Taiwan; Department of Internal Medicine, Kaohsiung, Taiwan; Department of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan; Graduate Institute of Medicine, College of Medicine, Kaohsiung, Taiwan; Center for Liquid Biopsy and Cohort, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chieh-Hua Lin
- Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Miaoli, Taiwan; Big Data Center, China Medical University Hospital, Taichung 404, Taiwan
| | - Meng-Rui Lee
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Wei-Chang Huang
- Division of Chest Medicine, Department of Internal Medicine, Taichung, 407, Taiwan; Mycobacterial Center, Taichung Veterans General Hospital, Taichung, 407, Taiwan; Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung, 402, Taiwan; School of Medicine, Chung Shan Medical University, Taichung, 402, Taiwan
| | - Chau-Chyun Sheu
- Division of Pulmonary and Critical Care Medicine, Kaohsiung, Taiwan; Department of Internal Medicine, Kaohsiung, Taiwan
| | - Meng-Hsuan Cheng
- Division of Pulmonary and Critical Care Medicine, Kaohsiung, Taiwan; Department of Internal Medicine, Kaohsiung, Taiwan; Graduate Institute of Medicine, College of Medicine, Kaohsiung, Taiwan; Department of Respiratory Therapy, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Po-Liang Lu
- Department of Internal Medicine, Kaohsiung, Taiwan; Graduate Institute of Medicine, College of Medicine, Kaohsiung, Taiwan; Center for Liquid Biopsy and Cohort, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Cheng-Hsieh Huang
- Aging and Disease Prevention Research Center, Kaohsiung, Taiwan; Department of Medical Laboratory Science and Biotechnology, Fooyin University, Kaohsiung, Taiwan
| | - Yao-Tsung Yeh
- Aging and Disease Prevention Research Center, Kaohsiung, Taiwan; Department of Medical Laboratory Science and Biotechnology, Fooyin University, Kaohsiung, Taiwan
| | - Jinn-Moon Yang
- Institute of Bioinformatics and Systems Biology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan; Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Inn-Wen Chong
- Division of Pulmonary and Critical Care Medicine, Kaohsiung, Taiwan; Department of Internal Medicine, Kaohsiung, Taiwan; Graduate Institute of Medicine, College of Medicine, Kaohsiung, Taiwan; Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Yu-Chieh Liao
- Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Miaoli, Taiwan
| | - Jann-Yuan Wang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
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Chalmers JD, Elborn S, Greene CM. Basic, translational and clinical aspects of bronchiectasis in adults. Eur Respir Rev 2023; 32:230015. [PMID: 37286220 PMCID: PMC10245133 DOI: 10.1183/16000617.0015-2023] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 04/03/2023] [Indexed: 06/09/2023] Open
Abstract
Bronchiectasis is a common progressive respiratory disease with recognisable radiological abnormalities and a clinical syndrome of cough, sputum production and recurrent respiratory infections. Inflammatory cell infiltration into the lung, in particular neutrophils, is central to the pathophysiology of bronchiectasis. Herein we explore the roles and relationships between infection, inflammation and mucociliary clearance dysfunction in the establishment and progression of bronchiectasis. Microbial and host-mediated damage are important processes underpinning bronchiectasis and the relative contribution of proteases, cytokines and inflammatory mediators to the propagation of inflammation is presented. We also discuss the emerging concept of inflammatory endotypes, defined by the presence of neutrophilic and eosinophilic inflammation, and explore the role of inflammation as a treatable trait. Current treatment for bronchiectasis focuses on treatment of underlying causes, enhancing mucociliary clearance, controlling infection and preventing and treating complications. Data on airway clearance approaches via exercise and mucoactive drugs, pharmacotherapy with macrolides to decrease exacerbations and the usefulness of inhaled antibiotics and bronchodilators are discussed, finishing with a look to the future where new therapies targeting host-mediated immune dysfunction hold promise.
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Affiliation(s)
| | - Stuart Elborn
- School of Medicine, Dentistry and Biomedical Sciences, Belfast, UK
| | - Catherine M Greene
- Lung Biology Group, Department of Clinical Microbiology, RCSI University of Medicine and Heath Sciences, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
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Suarez-Cuartin G, Hernandez-Argudo M, Perea L, Sibila O. Long-Term Antibiotics in Bronchiectasis. Semin Respir Crit Care Med 2021; 42:606-615. [PMID: 34261184 DOI: 10.1055/s-0041-1730945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
A significant proportion of bronchiectasis patients are chronically infected by potentially pathogenic microorganisms which may lead to frequent exacerbations and worse clinical outcomes. Current bronchiectasis guidelines recommend long-term inhaled antibiotics and/or oral macrolides as a part of patient management. In recent years, an increasing amount of evidence assessing the impact of these treatments on patient outcomes has been collected. Inhaled antibiotics have demonstrated significant improvements in sputum bacterial load, but their impact on patient quality of life, lung function, and exacerbation rate has not been consistent across trials. In this regard, recent post hoc analyses of inhaled antibiotics trials in bronchiectasis patients have shown that sputum bacterial load may be a key biomarker to predict treatment response in these patients. Oral macrolides, on the other hand, have proven to reduce exacerbation frequency and improve quality of life, but potential drug-related adverse effects and the increase in bacterial resistance are relevant. This review aims to summarize current important evidence for long-term antibiotic treatment in bronchiectasis patients.
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Affiliation(s)
- Guillermo Suarez-Cuartin
- Department of Respiratory Medicine, Hospital Universitari de Bellvitge, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Marta Hernandez-Argudo
- Department of Respiratory Medicine, Hospital Universitari de Bellvitge, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Lidia Perea
- Department of Respiratory Medicine, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), CIBERES, Barcelona, Spain
| | - Oriol Sibila
- Department of Respiratory Medicine, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), CIBERES, Barcelona, Spain
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