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Targeted Literature Review of the Burden of Respiratory Syncytial Infection among High-Risk and Elderly Patients in Asia Pacific Region. Infect Dis Ther 2023; 12:807-828. [PMID: 36869266 PMCID: PMC10017894 DOI: 10.1007/s40121-023-00777-2] [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: 11/30/2022] [Accepted: 02/09/2023] [Indexed: 03/05/2023] Open
Abstract
INTRODUCTION The burden of respiratory syncytial virus (RSV), which causes acute respiratory illness, is well recognized among the pediatric population but also imposes a significant risk to the elderly (age ≥ 60) and those with underlying comorbidities. The study aimed to review the most recent data on epidemiology and burden (clinical and economic) of RSV in the elderly/high-risk populations in China, Japan, South Korea, Taiwan, and Australia. METHODS A targeted review was conducted of English, Japanese, Korean, and Chinese language articles published from 1 January 2010 to 7 October 2020 relevant for the purpose. RESULTS A total of 881 studies were identified, and 41 were included. The median proportion of elderly patients with RSV in all adult patients with acute respiratory infection (ARI) or community acquired pneumonia was 79.78% (71.43-88.12%) in Japan, 48.00% (3.64-80.00%) in China, 41.67% (33.33-50.00%) in Taiwan, 38.61% in Australia, and 28.57% (22.76-33.33%) in South Korea. RSV was associated with a high clinical burden on those patients with comorbidities such as asthma and chronic obstructive pulmonary disease. In China, inpatients with ARI showed a significantly higher rate of RSV-related hospitalization than outpatients (13.22% versus 4.08%, p < 0.01). The median length of hospital stay among elderly patients with RSV was longest in Japan (30 days) and shortest in China (7 days). Mortality data varied by region with some studies reporting rates as high as 12.00% (9/75) in hospitalized elderly patients. Finally, data on the economic burden was only available for South Korea, with the median cost of a medical admission for an elderly patient with RSV being US dollar (USD) 2933. CONCLUSION RSV infection is a major source of disease burden among elderly patients, especially in regions with aging populations. It also complicates the management of those with underlying diseases. Appropriate prevention strategies are required to reduce the burden among the adult, especially the elderly, population. Data gaps regarding economic burden of RSV infection in the Asia Pacific region indicates the need for further research to increase our understanding on the burden of this disease in this region.
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Rosenwasser Y, Berger I, Loewy ZG. Therapeutic Approaches for Chronic Obstructive Pulmonary Disease (COPD) Exacerbations. Pathogens 2022; 11:pathogens11121513. [PMID: 36558847 PMCID: PMC9784349 DOI: 10.3390/pathogens11121513] [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: 11/15/2022] [Revised: 12/08/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
Chronic Obstructive Pulmonary Disease (COPD) is a progressive pulmonary disorder underpinned by poorly reversible airflow resulting from chronic bronchitis or emphysema. The prevalence and mortality of COPD continue to increase. Pharmacotherapy for patients with COPD has included antibiotics, bronchodilators, and anti-inflammatory corticosteroids (but with little success). Oral diseases have long been established as clinical risk factors for developing respiratory diseases. The establishment of a very similar microbiome in the mouth and the lung confirms the oral-lung connection. The aspiration of pathogenic microbes from the oral cavity has been implicated in several respiratory diseases, including pneumonia and chronic obstructive pulmonary disease (COPD). This review focuses on current and future pharmacotherapeutic approaches for COPD exacerbation including antimicrobials, mucoregulators, the use of bronchodilators and anti-inflammatory drugs, modifying epigenetic marks, and modulating dysbiosis of the microbiome.
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Affiliation(s)
- Yehudis Rosenwasser
- College of Pharmacy, Touro University, 230 West 125th Street, New York, NY 10027, USA
| | - Irene Berger
- College of Pharmacy, Touro University, 230 West 125th Street, New York, NY 10027, USA
| | - Zvi G. Loewy
- College of Pharmacy, Touro University, 230 West 125th Street, New York, NY 10027, USA
- School of Medicine, New York Medical College, Valhalla, NY 10595, USA
- Correspondence: ; Tel.: +1-646-981-4718
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3
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Yang J, Zhang Q, Zhang J, Ouyang Y, Sun Z, Liu X, Qaio F, Xu LQ, Niu Y, Li J. Exploring the Change of Host and Microorganism in Chronic Obstructive Pulmonary Disease Patients Based on Metagenomic and Metatranscriptomic Sequencing. Front Microbiol 2022; 13:818281. [PMID: 35369515 PMCID: PMC8966909 DOI: 10.3389/fmicb.2022.818281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 01/27/2022] [Indexed: 11/13/2022] Open
Abstract
Background Chronic obstructive pulmonary disease (COPD) is a universal respiratory disease resulting from the complex interactions between genes and environmental conditions. The process of COPD is deteriorated by repeated episodes of exacerbations, which are the primary reason for COPD-related morbidity and mortality. Bacterial pathogens are commonly identified in patients’ respiratory tracts both in the stable state and during acute exacerbations, with significant changes in the prevalence of airway bacteria occurring during acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Therefore, the changes in microbial composition and host inflammatory responses will be necessary to investigate the mechanistic link between the airway microbiome and chronic pulmonary inflammation in COPD patients. Methods We performed metatranscriptomic and metagenomic sequencing on sputum samples for twelve AECOPD patients before treatment and for four of them stable COPD (stabilization of AECOPD patients after treatment). Sequencing reads were classified by Kraken2, and the host gene expression was analyzed by Hisat2 and HTseq. The correlation between genes was obtained by the Spearman correlation coefficient. Mann–Whitney U-test was applied to identify microbes that exhibit significantly different distribution in two groups. Results At the phyla level, the top 5 dominant phyla were Firmicutes, Actinobacteria, Proteobacteria, Bacteroidetes, and Fusobacteria. The proportion of dominant gates in metagenomic data was similar in metatranscriptomic data. There were significant differences in the abundance of specific microorganisms at the class level between the two methods. No significant difference between AECOPD and stable COPD was found. However, the different expression levels of 5 host genes were significantly increased in stable COPD and were involved in immune response and inflammatory pathways, which were associated with macrophages. Conclusion Our study may provide a clue to investigate the mechanism of COPD and potential biomarkers in clinical diagnosis and treatment.
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Affiliation(s)
- Jing Yang
- The Key Laboratory of Developmental Genes and Human Disease, School of Life Sciences and Technology, Southeast University, Nanjing, China
| | - Qiang Zhang
- Department of Respirology, Zhongda Hospital, Southeast University, Nanjing, China
| | - Jun Zhang
- Department of Respirology, The Fourth Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | | | - Zepeng Sun
- China Mobile (Chengdu) Industrial Research Institute, Chengdu, China
| | - Xinlong Liu
- China Mobile (Chengdu) Industrial Research Institute, Chengdu, China
| | - Feng Qaio
- China Mobile (Chengdu) Industrial Research Institute, Chengdu, China
| | - Li-Qun Xu
- China Mobile (Chengdu) Industrial Research Institute, Chengdu, China
| | | | - Jian Li
- The Key Laboratory of Developmental Genes and Human Disease, School of Life Sciences and Technology, Southeast University, Nanjing, China
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4
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No evidence of harmful effects of steroids in severe exacerbations of COPD associated with influenza. Infection 2022; 50:699-707. [PMID: 35091985 PMCID: PMC8799421 DOI: 10.1007/s15010-021-01743-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 12/10/2021] [Indexed: 11/05/2022]
Abstract
Purpose Methods Results Conclusion Supplementary Information
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5
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Reid LV, Spalluto CM, Watson A, Staples KJ, Wilkinson TMA. The Role of Extracellular Vesicles as a Shared Disease Mechanism Contributing to Multimorbidity in Patients With COPD. Front Immunol 2021; 12:754004. [PMID: 34925327 PMCID: PMC8675939 DOI: 10.3389/fimmu.2021.754004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 11/04/2021] [Indexed: 01/27/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is one of the leading causes of death worldwide. Individuals with COPD typically experience a progressive, debilitating decline in lung function as well as systemic manifestations of the disease. Multimorbidity, is common in COPD patients and increases the risk of hospitalisation and mortality. Central to the genesis of multimorbidity in COPD patients is a self-perpetuating, abnormal immune and inflammatory response driven by factors including ageing, pollutant inhalation (including smoking) and infection. As many patients with COPD have multiple concurrent chronic conditions, which require an integrative management approach, there is a need to greater understand the shared disease mechanisms contributing to multimorbidity. The intercellular transfer of extracellular vesicles (EVs) has recently been proposed as an important method of local and distal cell-to-cell communication mediating both homeostatic and pathological conditions. EVs have been identified in many biological fluids and provide a stable capsule for the transfer of cargo including proteins, lipids and nucleic acids. Of these cargo, microRNAs (miRNAs), which are short 17-24 nucleotide non-coding RNA molecules, have been amongst the most extensively studied. There is evidence to support that miRNA are selectively packaged into EVs and can regulate recipient cell gene expression including major pathways involved in inflammation, apoptosis and fibrosis. Furthermore changes in EV cargo including miRNA have been reported in many chronic diseases and in response to risk factors including respiratory infections, noxious stimuli and ageing. In this review, we discuss the potential of EVs and EV-associated miRNA to modulate shared pathological processes in chronic diseases. Further delineating these may lead to the identification of novel biomarkers and therapeutic targets for patients with COPD and multimorbidities.
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Affiliation(s)
- Laura V Reid
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - C Mirella Spalluto
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom.,National Institute for Health Research Southampton Biomedical Research Centre, Southampton Centre for Biomedical Research, Southampton General Hospital, Southampton, United Kingdom
| | - Alastair Watson
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom.,National Institute for Health Research Southampton Biomedical Research Centre, Southampton Centre for Biomedical Research, Southampton General Hospital, Southampton, United Kingdom.,Birmingham Medical School, University of Birmingham, Birmingham, United Kingdom
| | - Karl J Staples
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom.,National Institute for Health Research Southampton Biomedical Research Centre, Southampton Centre for Biomedical Research, Southampton General Hospital, Southampton, United Kingdom
| | - Tom M A Wilkinson
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom.,National Institute for Health Research Southampton Biomedical Research Centre, Southampton Centre for Biomedical Research, Southampton General Hospital, Southampton, United Kingdom
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Feng Y, Liu E. Detection of respiratory viruses and expression of inflammatory cytokines in patients with acute exacerbation chronic obstructive pulmonary disease in Mongolia China. BRAZ J BIOL 2021; 82:e231134. [PMID: 34076157 DOI: 10.1590/1519-6984.231134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 07/10/2020] [Indexed: 11/22/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) was estimated to be the third cause of global mortality by 2020. Acute exacerbation COPD (AECOPD) is a sudden worsening of COPD symptoms and could be due to virus/bacterial infections and air pollution. Increased expression of inflammatory markers in patients with AECOPD is associated with viral infection. This study aimed to detect different viruses and analyze the expression of various inflammatory markers associated with AECOPD patients. Three hundred and forty-seven patients diagnosed with COPD according to GOLD criteria were included in this study. Swab samples and blood were collected for the detection of viruses by RT-PCR and expression of inflammatory markers, respectively. Of the swab samples, 113 (32.6%) of samples were positive for virus detection. Of these, HRV (39.8%) was the predominant virus detected followed by FluB (27.4%) and FluA (22.1%). The presence of HRV was significantly higher (p=0.044) among the other detected viruses. When compared to healthy controls the expression levels of TNF-α, IL-6 and IL-8 were significantly higher (p<0.05) in virus-positive patients. The IL-6 and IL-8 were the next predominantly expressed in markers among the samples. The higher expression rate of IL-8 was significantly (p<0.05) associated with patients having COPD GOLD III severity level and smoking history. Although HRV was the predominant virus detected the combined prevalence of Influenza A and B surpassing the rate of HRV. The high-level expression of well known inflammatory markers of AECOPD, TNF-α, IL-6 and IL-8 indicates a chronic severe illness. These markers play an important role and could be used as a marker for determining the severity of AECOPD.
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Affiliation(s)
- Y Feng
- People's Hospital of Xing'an League, Department of Clinical Laboratory, Ulanhot, Inner Mongolia, China
| | - E Liu
- Hulunbeier People's Hospital, Hulunbuir Clinical Medical College, Department of Clinical Laboratory, Inner Mongolia University for Nationalities, Hulunbeier, Inner Mongolia 021008, China
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7
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Jang JG, Ahn JH, Jin HJ. Incidence and Prognostic Factors of Respiratory Viral Infections in Severe Acute Exacerbation of Chronic Obstructive Pulmonary Disease. Int J Chron Obstruct Pulmon Dis 2021; 16:1265-1273. [PMID: 33994783 PMCID: PMC8112874 DOI: 10.2147/copd.s306916] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 04/19/2021] [Indexed: 01/08/2023] Open
Abstract
Purpose Severe acute exacerbations of chronic obstructive pulmonary disease (AECOPD) that require hospitalization and emergency department visits are associated with considerable morbidity and mortality. Respiratory viral infection is an important cause of severe AECOPD. We evaluated the incidence and prognostic factors of viral infection in severe AECOPD. Patients and Methods We performed a retrospective study of 262 cases of severe AECOPD in 192 patients who required hospitalization and emergency department visits at a tertiary teaching hospital in Daegu, Korea. A multiplex polymerase chain reaction panel using a nasopharyngeal swab sample was performed to detect viral infection. Results Viral infection was detected in 108 events (41.2%) from 96 patients. The most common virus was rhinovirus/enterovirus (27.5%), followed by influenza virus (22.5%), respiratory syncytial virus (13.3%), parainfluenza virus (12.5%), coronavirus (12.5%), metapneumovirus (7.5%), and adenovirus (4.2%). Virus-positive exacerbations, compared to virus-negative exacerbations, had a higher frequency of symptoms of rhinopharyngitis, higher neutrophil count and C-reactive protein (CRP) level, and lower eosinophil count. Multivariate analysis demonstrated that elevated CRP levels (odds ratio [OR], 2.76; 95% confidence interval [CI], 1.24–6.15), symptoms of rhinopharyngitis (OR, 1.98; 95% CI, 1.03–3.78), low eosinophil count (OR, 1.74; 95% CI, 1.03–2.92), and inhaled corticosteroid (ICS) use (OR, 1.70; 95% CI 1.04–2.80) were associated with viral infection in severe AECOPD. Conclusion The incidence of viral infection in severe AECOPD was 41.2%, and the most commonly detected virus was rhinovirus/enterovirus. Increased CRP level, symptoms of rhinopharyngitis, low eosinophil count, and use of ICS were associated with viral infection in severe AECOPD.
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Affiliation(s)
- Jong Geol Jang
- Division of Pulmonology and Allergy, Department of Internal Medicine, College of Medicine, Yeungnam University and Regional Center for Respiratory Diseases, Yeungnam University Medical Center, Daegu, South Korea
| | - June Hong Ahn
- Division of Pulmonology and Allergy, Department of Internal Medicine, College of Medicine, Yeungnam University and Regional Center for Respiratory Diseases, Yeungnam University Medical Center, Daegu, South Korea
| | - Hyun Jung Jin
- Division of Pulmonology and Allergy, Department of Internal Medicine, College of Medicine, Yeungnam University and Regional Center for Respiratory Diseases, Yeungnam University Medical Center, Daegu, South Korea
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Ritchie AI, Wedzicha JA. Definition, Causes, Pathogenesis, and Consequences of Chronic Obstructive Pulmonary Disease Exacerbations. Clin Chest Med 2020; 41:421-438. [PMID: 32800196 PMCID: PMC7423341 DOI: 10.1016/j.ccm.2020.06.007] [Citation(s) in RCA: 124] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Andrew I Ritchie
- National Heart and Lung Institute, Guy Scadding Building, Imperial College London, Dovehouse Street, London SW3 6JY, United Kingdom
| | - Jadwiga A Wedzicha
- National Heart and Lung Institute, Guy Scadding Building, Imperial College London, Dovehouse Street, London SW3 6JY, United Kingdom.
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9
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Liu J, Ran Z, Wang F, Xin C, Xiong B, Song Z. Role of pulmonary microorganisms in the development of chronic obstructive pulmonary disease. Crit Rev Microbiol 2020; 47:1-12. [PMID: 33040638 DOI: 10.1080/1040841x.2020.1830748] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) is a chronic obstructive respiratory disease characterized by irreversible airway limitation and persistent respiratory symptoms. The main clinical symptoms of COPD are dyspnoea, chronic cough, and sputum. COPD is often accompanied by other respiratory diseases, which can cause worsening of the disease. COPD patients with dyspnoea and aggravation of cough and sputum symptoms represent acute exacerbations of COPD (AECOPD). There is mounting evidence suggesting that dysbiosis of pulmonary microbiota participates in the disease. However, investigations of dysbiosis of pulmonary microbiota and the disease are still in initial phases. To screen, diagnose, and treat this respiratory disease, integrating data from different studies can improve our understanding of the occurrence and development of COPD and AECOPD. In this review, COPD epidemiology and the primary triggering mechanism are explored. Emerging knowledge regarding the association of inflammation, caused by pulmonary microbiome imbalance, and changes in lung microbiome flora species involved in the development of the disease are also highlighted. These data will further our understanding of the pathogenesis of COPD and AECOPD and may yield novel strategies for the use of pulmonary microbiota as a potential therapeutic intervention.
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Affiliation(s)
- Jiexing Liu
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, PR China
| | - Zhuonan Ran
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, PR China
| | - Fen Wang
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, PR China
| | - Caiyan Xin
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, PR China
| | - Bin Xiong
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, PR China
| | - Zhangyong Song
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, PR China.,Molecular Biotechnology Platform, Public Center of Experimental Technology, Southwest Medical University, Luzhou, PR China
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Cafferkey J, Coultas JA, Mallia P. Human rhinovirus infection and COPD: role in exacerbations and potential for therapeutic targets. Expert Rev Respir Med 2020; 14:777-789. [PMID: 32498634 DOI: 10.1080/17476348.2020.1764354] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Respiratory virus infections (predominantly rhinoviruses) are the commonly identified in COPD exacerbations but debate about their role as a trigger of exacerbations continues. Experimental infection studies have provided significant new evidence establishing a causal relationship between virus infection and COPD exacerbations and contributed to a better understanding of the mechanisms of virus-induced exacerbations. However as yet no anti-viral treatments have undergone clinical trials in COPD patients. AREAS COVERED This review discusses the evidence for and against respiratory viruses being the main trigger of COPD exacerbations from both epidemiological studies and experimental infection studies. The host immune response to rhinovirus infection and how abnormalities in host immunity may underlie increased susceptibility to virus infection in COPD are discussed and the role of dual viral-bacterial infection in COPD exacerbations. Finally the current state of anti-viral therapy is discussed and how these may be used in the future treatment of COPD exacerbations. EXPERT OPINION Respiratory virus infections are the trigger of a substantial proportion of COPD exacerbations and rhinoviruses are the most common virus type. Clinical trials of anti-viral agents are needed in COPD patients to determine whether they are effective in virus-induced COPD exacerbations.
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Affiliation(s)
- John Cafferkey
- Department of Respiratory Medicine, Imperial College Healthcare NHS Trust , London, UK
| | | | - Patrick Mallia
- Department of Respiratory Medicine, Imperial College Healthcare NHS Trust , London, UK.,National Heart and Lung Institute, Imperial College London , London, UK
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11
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Ko FWS, Chan PKS, Chan RWY, Chan KP, Ip A, Kwok A, Ngai JCL, Ng SS, On CT, Hui DSC. Molecular detection of respiratory pathogens and typing of human rhinovirus of adults hospitalized for exacerbation of asthma and chronic obstructive pulmonary disease. Respir Res 2019; 20:210. [PMID: 31519188 PMCID: PMC6743175 DOI: 10.1186/s12931-019-1181-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 09/05/2019] [Indexed: 11/10/2022] Open
Abstract
Background Acute exacerbations of chronic obstructive pulmonary disease (AECOPD) and asthma are associated with a variety of precipitating factors including infection. This study assessed the infective viral etiologies by real-time multiplex polymerase chain reaction of patients hospitalized with AECOPD and asthma exacerbations. In addition, infective etiologies were assessed for association with the clinical outcome of the patients. Methods Adults admitted with AECOPD and asthma exacerbations between August 2016 and July 2017 were recruited. Nasopharyngeal aspirate (NPA) samples were obtained from the patients within 1–2 days of admission and subjected to pathogen detection and human rhinovirus (HRV) typing. Results Altogether 402 patients with AECOPD, 80 stable COPD, 100 asthma exacerbation and 21 stable asthma subjects were recruited. Among those admitted for AECOPD and asthma exacerbations, 141(35.1%) and 45(45.0%) respectively had pathogens identified in the NPA specimens. The commonest virus identified was influenza A followed by HRV. HRV typing identified HRV-A and HRV-C as the more common HRV with a wide variety of genotypes. Identification of pathogens in NPA or HRV typing otherwise did not affect clinical outcomes including the hospital length of stay, readmission rates and mortality except that identification of pathogens in asthma exacerbation was associated with a lower rate of readmissions at 30 and 60 days. Conclusions Many respiratory viruses were associated with AECOPD and asthma exacerbation. HRV-A and HRV-C were the more common HRV associated with exacerbations. Identification of pathogens in NPA was associated with less readmissions for asthma patients at 30 and 60 days. Trial registration ClinicalTrials.gov NCT02866357. Supplementary information Supplementary information accompanies this paper at10.1186/s12931-019-1181-0.
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Affiliation(s)
- Fanny Wai-San Ko
- SH Ho Research Center in Respiratory Diseases, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Paul Kay-Sheung Chan
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Renee W Y Chan
- Department of Paediatrics, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Ka-Pang Chan
- SH Ho Research Center in Respiratory Diseases, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - April Ip
- SH Ho Research Center in Respiratory Diseases, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Angela Kwok
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Jenny Chun-Li Ngai
- SH Ho Research Center in Respiratory Diseases, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - So-Shan Ng
- SH Ho Research Center in Respiratory Diseases, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Chan Tat On
- SH Ho Research Center in Respiratory Diseases, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - David Shu-Cheong Hui
- SH Ho Research Center in Respiratory Diseases, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, People's Republic of China.
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Circulating miR-29c, miR-30c, miR-193a-5p and miR-885-5p: Novel potential biomarkers for HTLV-1 infection diagnosis. INFECTION GENETICS AND EVOLUTION 2019; 74:103938. [PMID: 31242452 DOI: 10.1016/j.meegid.2019.103938] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 06/14/2019] [Accepted: 06/21/2019] [Indexed: 12/28/2022]
Abstract
Human T-cell leukemia virus type 1 (HTLV-1) is an oncoretrovirus that infects 5-10 million people worldwide. Currently, different methods are used to test HTLV-1 infection. However, a biomarker that could enable an early and accurate diagnosis of HTLV-1 infection is still lacking. Here, we compared the serum miRNA expression profile in HTLV-1 infected patients versus healthy individuals to identify a potential biomarker for diagnosis of HTLV-1 infection.TaqMan miRNA microarray (TLDA) was carried out to compare the miRNA expression profile in infected versus healthy individuals. Quantitative real-time RT-PCR (qRT-PCR) was applied to validate TLDA results. Receiver-operator characteristic (ROC) curve analysis was performed to determine the diagnostic accuracy of the most highly and significantly identified deregulated miRNA(s) as potential biomarker(s). We identified deregulated expression for ten miRNAs with miR-127, miR-136, miR-142-3p, miR-221, and miR-423-5p being down-regulated whilst let-7b, miR-29c, miR-30c, miR-193a-5p, and miR-885-5p being up-regulated in infected individuals. ROC curve analyses showed an AUC (Areas Under the ROC Curve) of 0.875 (95% CI: 0.7819-0.9581; P = .0021), 0.861 (95% CI: 0.7596-0.9754; P = .003), 0.856 (95% CI: 0.689-0.895; P = .011), and 0.849 (95% CI: 0.678-0.855; P = .017) for miR-29c, miR-30c, miR-193a-5p, and miR-885-5p respectively. Combined ROC analyses using these 4 miRNAs showed a greater AUC of 0.907 (95% CI: 0.809-1; P = .000001) indicating a robust diagnostic value of these 4 miRNAs. Our findings highlight serum miR-29c, miR-30c, miR-193a-5p and miR-885-5p as novel potential biomarkers important for HTLV-1 diagnosis.
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13
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Su YC, Jalalvand F, Thegerström J, Riesbeck K. The Interplay Between Immune Response and Bacterial Infection in COPD: Focus Upon Non-typeable Haemophilus influenzae. Front Immunol 2018; 9:2530. [PMID: 30455693 PMCID: PMC6230626 DOI: 10.3389/fimmu.2018.02530] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 10/15/2018] [Indexed: 12/12/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a debilitating respiratory disease and one of the leading causes of morbidity and mortality worldwide. It is characterized by persistent respiratory symptoms and airflow limitation due to abnormalities in the lower airway following consistent exposure to noxious particles or gases. Acute exacerbations of COPD (AECOPD) are characterized by increased cough, purulent sputum production, and dyspnea. The AECOPD is mostly associated with infection caused by common cold viruses or bacteria, or co-infections. Chronic and persistent infection by non-typeable Haemophilus influenzae (NTHi), a Gram-negative coccobacillus, contributes to almost half of the infective exacerbations caused by bacteria. This is supported by reports that NTHi is commonly isolated in the sputum from COPD patients during exacerbations. Persistent colonization of NTHi in the lower airway requires a plethora of phenotypic adaptation and virulent mechanisms that are developed over time to cope with changing environmental pressures in the airway such as host immuno-inflammatory response. Chronic inhalation of noxious irritants in COPD causes a changed balance in the lung microbiome, abnormal inflammatory response, and an impaired airway immune system. These conditions significantly provide an opportunistic platform for NTHi colonization and infection resulting in a "vicious circle." Episodes of large inflammation as the consequences of multiple interactions between airway immune cells and NTHi, accumulatively contribute to COPD exacerbations and may result in worsening of the clinical status. In this review, we discuss in detail the interplay and crosstalk between airway immune residents and NTHi, and their effect in AECOPD for better understanding of NTHi pathogenesis in COPD patients.
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Affiliation(s)
- Yu-Ching Su
- Clinical Microbiology, Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
| | - Farshid Jalalvand
- Department of Biology, Centre for Bacterial Stress Response and Persistence, University of Copenhagen, Copenhagen, Denmark
| | - John Thegerström
- Clinical Microbiology, Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
| | - Kristian Riesbeck
- Clinical Microbiology, Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
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14
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Jafarinejad H, Moghoofei M, Mostafaei S, Salimian J, Azimzadeh Jamalkandi S, Ahmadi A. Worldwide prevalence of viral infection in AECOPD patients: A meta-analysis. Microb Pathog 2017; 113:190-196. [PMID: 29038056 PMCID: PMC7127529 DOI: 10.1016/j.micpath.2017.10.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 10/11/2017] [Accepted: 10/12/2017] [Indexed: 12/23/2022]
Abstract
Background and objective Chronic obstructive pulmonary disease (COPD) is a chronic progressive lung disease. On the other hand, viral infections of the airway are associated with the acute exacerbations of COPD. A systematic review and meta-analysis were performed to determine the prevalence rate of viral infections in acute exacerbations of COPD patients. Methods PubMed database was systematically searched for population-based prevalence studies (1930–2017). Fixed and random effects models were used for estimation of summary effect-sizes. Between-study heterogeneity and publication bias were also calculated. “Viral infections” and “COPD patients with exacerbations” were the two critical inclusion criteria. Results Twenty-eight studies were selected out of 26078 articles for the present review. The overall estimation of the prevalence of viral infection was 0.374 (95% C.I: 0.359–0.388). Also, the evident heterogeneity of viral infection was observed among the studies (Cochran Q test, p value < 0.001 and I-squared = 97.5%). The highest and lowest prevalence rate was related to rhinovirus and echovirus, respectively. Also, the results of this study showed that the prevalence of viral infection in exacerbated COPD patients has fluctuation during the years with a slight increase and decrease. Conclusions The results of this systematic review demonstrated that respiratory viral infections have an important role in the acute exacerbation of COPD (AECOPD). In addition, determining the exact geographic epidemiology of these viruses is very important to manage the treatment of these infections. Rhinovirus and Echovirus were the most and least common viruses. The prevalence of viral infection had a fluctuation by the year of publication. PCR resulted in the highest rate of viral detection.
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Affiliation(s)
- Habib Jafarinejad
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mohsen Moghoofei
- Department of Microbiology, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Shayan Mostafaei
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Jafar Salimian
- Chemical Injuries Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | | | - Ali Ahmadi
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
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15
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Shin HY, Hwang HJ, Chung JH. Factors Influencing Influenza Vaccination Among Patients With Chronic Obstructive Pulmonary Disease: A Population-Based Cross-sectional Study. Asia Pac J Public Health 2017; 29:560-568. [PMID: 29020801 DOI: 10.1177/1010539517735415] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study aimed to investigate the factors associated with vaccination coverage among chronic obstructive pulmonary disease (COPD) patients in Korea using the fourth to the sixth Korean National Health and Nutrition Examination Surveys (KNHANES IV, V, VI). A total of 16 812 subjects aged 40 years and older who underwent spirometry and had an "influenza vaccination history" were analyzed. The vaccination rate of middle-aged (40-64 years) COPD patients was only 31.9%; whereas, the vaccination rate of elderly (65 years and older) COPD patients was 80.0%. The results of a multiple regression analysis indicated that older age (odds ratio [OR], 1.12; 95% confidence interval [95% CI], 1.09-1.14), poor self-rated health status (OR, 1.45; 95% CI, 1.14-1.95), regular health check-up (OR, 2.61; 95% CI, 1.93-3.51), married marital status (OR, 0.64; 95% CI, 0.42-0.96), and household income below average (OR, 0.72; 95% CI, 0.53-0.98) were associated with influenza vaccination. More attention and targeted interventions are required to improve the influenza vaccination rate of COPD patients.
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Affiliation(s)
- Hyun-Young Shin
- 1 Myongji Hospital, Seonam University, Gyeonggi-do, Republic of Korea.,2 Yonsei University, Seoul, Republic of Korea
| | - Hee-Jin Hwang
- 3 International St Mary's Hospital, Catholic Kwandong University, Incheon, Republic of Korea
| | - Jae Ho Chung
- 3 International St Mary's Hospital, Catholic Kwandong University, Incheon, Republic of Korea
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16
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Yin T, Zhu Z, Mei Z, Feng J, Zhang W, He Y, Shi J, Qian L, Liu Y, Huang Q, Hu Y, Jie Z. Analysis of viral infection and biomarkers in patients with acute exacerbation of chronic obstructive pulmonary disease. CLINICAL RESPIRATORY JOURNAL 2017; 12:1228-1239. [PMID: 28586150 PMCID: PMC7162408 DOI: 10.1111/crj.12656] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 04/12/2017] [Accepted: 05/09/2017] [Indexed: 12/22/2022]
Abstract
OBJECTIVE To investigate viral infection in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD) in Shanghai, and to analyze the clinical characteristics and biomarkers in viral infection. METHODS This study included all consecutive patients who were admitted for a diagnosis of AECOPD during June 2013 to May 2015. Thirty-one stable COPD patients and 31 healthy controls were also recruited. Oropharyngeal samples were assessed, PCR for respiratory viruses were performed. Patients were divided into AECOPD virus-positive (+) group and AECOPD virus-negative (-) group according to viral detection. Luminex was used to detect the concentrations of inflammatory cytokines in the serum. RESULTS A total of 264 patients were included with a mean age of 75 ± 0.5 years. There were 72 patients (27.3%) identified with viral positive, of whom two patients were detected with double viral infections (FluA + FluB and RSVA + HRV, respectively). The rate of viral detection was associated with season, highest in winter. Comparisons of clinical characteristics showed no significant differences between AECOPD virus+ group and AECOPD virus- group. However, serum concentrations of interferon-inducible protein-10 (IP-10) and interferon-gamma (IFN-γ) in virus+ AECOPD patients were significantly higher than those in the virus- AECOPD, stable COPD and healthy control groups (P < .05). CONCLUSION Viral infection was an important pathogen in AECOPD patients; the most common viruses included FluA, HRV and FluB. It was very difficult to diagnose the viral infection according to clinical characteristics. The increased of serum IP-10 and IFN-γ levels might be value to indicate viral infection in AECOPD.
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Affiliation(s)
- Tiping Yin
- Department of Respiratory Medicine, the Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China.,Department of Internal Medicine, Wannan Medical College, Wuhu, China
| | - Zhaoqin Zhu
- Department of Pathogen Diagnosis and Biosafety, Shanghai Public Health Clinical Center, Shanghai, China
| | - Zhoufang Mei
- Department of Respiratory Medicine, the Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China
| | - Jingjing Feng
- Department of Respiratory Medicine, the Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China
| | - Wanju Zhang
- Department of Pathogen Diagnosis and Biosafety, Shanghai Public Health Clinical Center, Shanghai, China
| | - Yanchao He
- Department of Respiratory Medicine, the Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China
| | - Jindong Shi
- Department of Respiratory Medicine, the Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China
| | - Ling Qian
- Department of Respiratory Medicine, the Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China
| | - Yi Liu
- Department of Pathogen Diagnosis and Biosafety, Shanghai Public Health Clinical Center, Shanghai, China
| | - Qihui Huang
- Department of Respiratory Medicine, the Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China
| | - Yunwen Hu
- Department of Pathogen Diagnosis and Biosafety, Shanghai Public Health Clinical Center, Shanghai, China
| | - Zhijun Jie
- Department of Respiratory Medicine, the Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China
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