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Huțanu D, Sárközi HK, Vultur MA, Sabău AH, Cocuz IG, Mărginean C, Chelemen AM, Budin CE. Analyzing Clinical Parameters and Bacterial Profiles to Uncover the COPD Exacerbations: A Focus on Intensive Care Unit Challenges. MEDICINA (KAUNAS, LITHUANIA) 2025; 61:669. [PMID: 40282960 PMCID: PMC12029107 DOI: 10.3390/medicina61040669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2025] [Revised: 03/27/2025] [Accepted: 04/03/2025] [Indexed: 04/29/2025]
Abstract
Background and Objectives: Chronic obstructive pulmonary disease (COPD) poses a significant healthcare challenge worldwide, frequently leading to exacerbations necessitating intensive care unit admissions for potentially life-threatening complications. We aimed to investigate correlations between laboratory parameters, bacteriological agents, ventilation mode, and survival rates among COPD patients admitted to the ICU. Materials and Methods: Data were collected from the Pulmonology Department of Mures Clinical County Hospital, Romania, from 1 January 2022 to 30 October 2023. Eighty-four COPD patients required ICU transfer, except for concurrent SARS-CoV-2 infections. Results: Ventilation modes exhibited a significant correlation with specific bacteriological agents, orotracheal intubation being more prevalent in infections with Acinetobacter baumanii, Staphylococcus aureus, and Streptococcus pneumoniae (p < 0.001). Negative cultures were predominantly found in patients managed with non-invasive ventilation. Laboratory parameters revealed an association between elevated white blood cell counts and bacteriological superinfection, particularly with Escherichia coli (p < 0.001). Different bacteriological agents had different survival rates. Patients infected with Acinetobacter baumanii exhibited the highest mortality rate, while those with Staphylococcus aureus had the lowest (p < 0.01). Conclusions: The importance of prompt evaluation of laboratory parameters and bacteriological findings is underscored by these findings, particularly in ICU settings where ventilation and bacteriological profiles influence patient outcomes. The identification of elevated WBC counts is a marker of bacterial superinfection. The association between specific bacterial agents and ventilation modes highlights the importance of tailored treatment based on microbial profiles. These insights can be applied to refine treatment protocols and enhance survival rates in severe COPD exacerbations that require ICU management.
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Affiliation(s)
- Dragoș Huțanu
- Pulmonology Department, “George Emil Palade” University of Medicine Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania; (D.H.); (M.A.V.)
| | - Hédi-Katalin Sárközi
- Pulmonology Department, “George Emil Palade” University of Medicine Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania; (D.H.); (M.A.V.)
| | - Mara Andreea Vultur
- Pulmonology Department, “George Emil Palade” University of Medicine Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania; (D.H.); (M.A.V.)
| | - Adrian-Horațiu Sabău
- Pathophysiology Department, “George Emil Palade” University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania; (A.-H.S.); (I.G.C.); (C.E.B.)
| | - Iuliu Gabriel Cocuz
- Pathophysiology Department, “George Emil Palade” University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania; (A.-H.S.); (I.G.C.); (C.E.B.)
| | - Corina Mărginean
- Oncology and Palliative Care Department, “George Emil Palade” University of Medicine Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania;
| | - Andra-Maria Chelemen
- Faculty of Medicine, “George Emil Palade” University of Medicine Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania;
| | - Corina Eugenia Budin
- Pathophysiology Department, “George Emil Palade” University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania; (A.-H.S.); (I.G.C.); (C.E.B.)
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Ji HW, Yu S, Sim YS, Seo H, Park JW, Min KH, Kim DK, Lee HW, Rhee CK, Park YB, Shin KC, Yoo KH, Jung JY. Clinical Significance of Various Pathogens Identified in Patients Experiencing Acute Exacerbations of COPD: A Multi-center Study in South Korea. Tuberc Respir Dis (Seoul) 2025; 88:292-302. [PMID: 39736471 PMCID: PMC12010712 DOI: 10.4046/trd.2024.0089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Revised: 10/22/2024] [Accepted: 12/16/2024] [Indexed: 01/01/2025] Open
Abstract
BACKGROUND Respiratory infections play a major role in acute exacerbation of chronic obstructive pulmonary disease (AECOPD). This study assessed the prevalence of bacterial and viral pathogens and their clinical impact on patients with AECOPD. METHODS This retrospective study included 1,186 patients diagnosed with AECOPD at 28 hospitals in South Korea between 2015 and 2018. We evaluated the identification rates of pathogens, basic patient characteristics, clinical features, and the factors associated with infections by potentially drug-resistant (PDR) pathogens using various microbiological tests. RESULTS Bacteria, viruses, and both were detected in 262 (22.1%), 265 (22.5%), and 129 (10.9%) of patients, respectively. The most common pathogens included Pseudomonas aeruginosa (17.8%), Mycoplasma pneumoniae (11.2%), Streptococcus pneumoniae (9.0%), influenza A virus (19.0%), rhinovirus (15.8%), and respiratory syncytial virus (6.4%). Notably, a history of pulmonary tuberculosis (odds ratio [OR], 1.66; p=0.046), bronchiectasis (OR, 1.99; p=0.032), and the use of a triple inhaler regimen within the past 6 months (OR, 2.04; p=0.005) were identified as significant factors associated with infection by PDR pathogens. Moreover, patients infected with PDR pathogens exhibited extended hospital stays (15.9 days vs. 12.4 days, p=0.018) and higher intensive care unit admission rates (15.9% vs. 9.5%, p=0.030). CONCLUSION This study demonstrates that a variety of pathogens are involved in episodes of AECOPD. Nevertheless, additional research is required to confirm their role in the onset and progression of AECOPD.
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Affiliation(s)
- Hyun Woo Ji
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Soojoung Yu
- International Healthcare Center, Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea
| | - Yun Su Sim
- Division of Pulmonary, Allergy and Critical Care Medicine, Hallym University Kangnam Sacred Heart Hospital, College of Medicine, Hallym University, Seoul, Republic of Korea
| | - Hyewon Seo
- Department of Internal Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Jeong-Woong Park
- Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - Kyung Hoon Min
- Division of Pulmonology, Allergy and Critical Care Medicine, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Deog Kyeom Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hyun Woo Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Chin Kook Rhee
- Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yong Bum Park
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, Republic of Korea
| | - Kyeong-Cheol Shin
- Division of Pulmonology and Allergy, Department of Internal Medicine, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Republic of Korea
| | - Kwang Ha Yoo
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Ji Ye Jung
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
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3
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Wu L, Zhang E, Tu Y, Chen Y, Wang C, Ren Y, Fang B. Inherent immunity and adaptive immunity: Mechanism and role in AECOPD. Innate Immun 2025; 31:17534259251322612. [PMID: 40017227 PMCID: PMC11869301 DOI: 10.1177/17534259251322612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 12/20/2024] [Accepted: 02/04/2025] [Indexed: 03/01/2025] Open
Abstract
Acute exacerbation of chronic obstructive pulmonary disease (AECOPD) is the leading cause of hospitalization and mortality in COPD patients. The occurrence of antibiotic resistance and the progression of non-infectious diseases contribute to poor patient outcomes. Thus, a comprehensive understanding of the mechanisms underlying AECOPD is essential for effective prevention. It is widely acknowledged that the immune system plays a fundamental role in pathogen clearance and the development of inflammation. Immune dysregulation, either due to deficiency or hyperactivity, has been implicated in AECOPD pathogenesis. Therefore, the purpose of this review is to investigate the possible mechanisms underlying dysregulated immune function and disease progression in COPD patients, specifically focusing on the innate and adaptive immune responses. The ultimate aim is to provide new insights for clinical prevention and treatment strategies targeting AECOPD.
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Affiliation(s)
- Linguangjin Wu
- Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Emergency Department, Shanghai, China
| | - Erxin Zhang
- Department of Gastroenterology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yadan Tu
- Chongqing Hospital of Traditional Chinese Medicine, Classic Department of Traditional Chinese Medicine, Chongqing, China
| | - Yong Chen
- Chongqing Hospital of Traditional Chinese Medicine, Classic Department of Traditional Chinese Medicine, Chongqing, China
| | - Chenghu Wang
- Chongqing Hospital of Traditional Chinese Medicine, Classic Department of Traditional Chinese Medicine, Chongqing, China
| | - Yi Ren
- Chongqing Hospital of Traditional Chinese Medicine, Classic Department of Traditional Chinese Medicine, Chongqing, China
| | - Bangjiang Fang
- Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Emergency Department, Shanghai, China
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Cui Y, Du X, Li Y, Wang D, Lv Z, Yuan H, Chen Y, Liu J, Sun Y, Wang W. Imbalanced and Unchecked: The Role of Metal Dyshomeostasis in Driving COPD Progression. COPD 2024; 21:2322605. [PMID: 38591165 DOI: 10.1080/15412555.2024.2322605] [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: 10/25/2023] [Accepted: 02/19/2024] [Indexed: 04/10/2024]
Abstract
Chronic obstructive pulmonary disease (COPD) is a chronic respiratory condition characterized by persistent inflammation and oxidative stress, which ultimately leads to progressive restriction of airflow. Extensive research findings have cogently suggested that the dysregulation of essential transition metal ions, notably iron, copper, and zinc, stands as a critical nexus in the perpetuation of inflammatory processes and oxidative damage within the lungs of COPD patients. Unraveling the intricate interplay between metal homeostasis, oxidative stress, and inflammatory signaling is of paramount importance in unraveling the intricacies of COPD pathogenesis. This comprehensive review aims to examine the current literature on the sources, regulation, and mechanisms by which metal dyshomeostasis contributes to COPD progression. We specifically focus on iron, copper, and zinc, given their well-characterized roles in orchestrating cytokine production, immune cell function, antioxidant depletion, and matrix remodeling. Despite the limited number of clinical trials investigating metal modulation in COPD, the advent of emerging methodologies tailored to monitor metal fluxes and gauge responses to chelation and supplementation hold great promise in unlocking the potential of metal-based interventions. We conclude that targeted restoration of metal homeostasis represents a promising frontier for ameliorating pathological processes driving COPD progression.
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Affiliation(s)
- Ye Cui
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, People's Republic of China
| | - Xinqian Du
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, People's Republic of China
| | - Yunqi Li
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, People's Republic of China
| | - Dan Wang
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, People's Republic of China
| | - Zhe Lv
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, People's Republic of China
| | - Huihui Yuan
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, People's Republic of China
| | - Yan Chen
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, People's Republic of China
| | - Jie Liu
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, People's Republic of China
| | - Ying Sun
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, People's Republic of China
| | - Wei Wang
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, People's Republic of China
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Brockhausen I, Falconer D, Sara S. Relationships between bacteria and the mucus layer. Carbohydr Res 2024; 546:109309. [PMID: 39549591 DOI: 10.1016/j.carres.2024.109309] [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: 08/20/2024] [Revised: 11/05/2024] [Accepted: 11/07/2024] [Indexed: 11/18/2024]
Abstract
The mucus layer on epithelial cells is an essential barrier, as well as a nutrient-rich niche for bacteria, forming a dynamic, functional and symbiotic ecosystem and first line of defense against invading pathogens. Particularly bacteria in biofilms are very difficult to eradicate. The extensively O-glycosylated mucins are the main glycoproteins in mucus that interact with microbes. For example, mucins act as adhesion receptors and nutritional substrates for gut bacteria. Mucins also play important roles in immune responses, and they control the composition of the microbiome, primarily due to the abundance of complex O-glycans. In inflammation or infection, the structures of mucin O-glycans can change and thus affect mucin function, impact biofilm formation and the induction of virulence pathways in bacteria. In turn, bacteria can support host cell growth, mucin production and can stimulate changes in the host immune system and responses leading to healthy tissue function. The external polysaccharides of bacteria are critical for controlling adhesion and biofilm formation. It is therefore important to understand the relationships between the mucus layer and microbes, the mechanisms and regulation of the biosynthesis of mucins, of bacterial surface polysaccharides, and adhesins. This knowledge can provide biomarkers, vaccines and help to develop new approaches for improved therapies, including antibiotic treatments.
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Affiliation(s)
- Inka Brockhausen
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada.
| | - Dylan Falconer
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Sara Sara
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
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Hu Y, Feng Z, An G, Lv Z, Wang J, Cui Y, Corrigan CJ, Wang W, Li Q, Ying S. Edwardsiella tarda induces airways inflammation and production of autoantibodies against lung tissues through regulation of the IL-33-ST2 axis. Immunology 2024; 173:575-589. [PMID: 39126327 DOI: 10.1111/imm.13848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 07/28/2024] [Indexed: 08/12/2024] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a highly prevalent chronic respiratory disease characterised by irreversible airways obstruction associated with chronic airways inflammation and remodelling, while the pathogenesis and the mechanistic differences between patients remain to be fully elucidated. We previously reported that alarmin cytokine IL-33 may contribute to the production of autoantibodies against respiratory epithelial cells. Here we expand the hypothesis that pulmonary autoimmune responses induced by airway microbiota also contribute to the progression of COPD. We focused on Edwardsiella tarda which we detected uniquely in the induced sputum of patients with acute exacerbations of COPD. Pernasal challenge of the airways of WT mice with supernatants of cultured E. tarda induced marked, elevated expression of IL-33 in the lung tissues. Immunisation of animals with supernatants of cultured E. tarda resulted in significantly elevated airways inflammation, the formation of tertiary lymphatic structures and significantly elevated proportions of T follicular helper T cells in the lung tissue and mediastinal lymph nodes. Interestingly, such challenge also induced production of IgG autoantibodies directed against lung tissue lysate, alveolar epithelial cell proteins and elastin fragment, while putrescine, one of metabolites generated by the bacterium, might play an important role in the autoantibody production. Furthermore, all of these effects were partly but significantly abrogated in mice with deletion of the IL-33 receptor ST2. Collectively, these data support the hypothesis that COPD is progressed at least partly by airways microbiota such as E. tarda initiating autoimmune attack of the airways epithelium mediated at least partly through the IL-33-ST2 axis.
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Affiliation(s)
- Yue Hu
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Zhihong Feng
- Department of Respiratory Medicine, Beijing Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Gao An
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Institute of Systems Biomedicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Zhe Lv
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Jingjing Wang
- Department of Laboratory Animal Sciences, Capital Medical University, Beijing, China
| | - Ye Cui
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Chris J Corrigan
- Faculty of Life Sciences & Medicine, School of Immunology & Microbial Sciences, Department of Inflammation Biology, King's College London, London, UK
| | - Wei Wang
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Qin Li
- Department of Laboratory, Yanjing Medical College, Capital Medical University, Beijing, China
| | - Sun Ying
- Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
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7
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Shi Y, Yang J, Tian T, Li S, Xie Y. Exploring the potential role of microbiota and metabolites in acute exacerbation of chronic obstructive pulmonary disease. Front Microbiol 2024; 15:1487393. [PMID: 39483760 PMCID: PMC11526122 DOI: 10.3389/fmicb.2024.1487393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2024] [Accepted: 10/02/2024] [Indexed: 11/03/2024] Open
Abstract
The acute exacerbation of chronic obstructive pulmonary disease seriously affects the respiratory system function and quality of life of patients. This study employed 16S rRNA sequencing and metabolomics techniques to analyze the respiratory microbiota and serum metabolites of COPD and AECOPD patients. The results showed that the microbial diversity in the respiratory tract of AECOPD patients was significantly lower than that of COPD patients, and the relative abundance of Bacteroidetes, Prevotella and Neisseria in the respiratory tract of AECOPD patients was significantly lower than that of COPD patients. However, the relative abundance of Haemophilus_D, Veillonella_A and Pseudomonas_E, in AECOPD patients was significantly higher than that of COPD patients, and the ability of respiratory microbiota in AECOPD patients to participate in alanine metabolism was significantly lower than that of COPD patients. Metabolome results further revealed that the serum alanine levels in AECOPD patients were significantly lower than those in COPD patients, and these differential metabolites were mainly involved in linoleic acid metabolism, protein digestion and absorption and regulation of lipolysis in adipocytes. In summary, the structural characteristics of respiratory microbiota in COPD and AECOPD patients are different from those in healthy populations, and their microbiota diversity decreases and microbial community structure and function will also undergo changes when acute exacerbations occur. In addition, the predicted microbial community function and metabolomics results indicate that the onset of AECOPD is mainly related to energy and amino acid metabolism disorders, especially alanine metabolism.
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Affiliation(s)
- Yanmin Shi
- National Regional Traditional Chinese Medicine (Lung Disease) Diagnosis and Treatment Center, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
- Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-Construction by Henan Province and Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
- Henan International Joint Laboratory of Evidence-based Evaluation for Respiratory Diseases, Henan Province Clinical Research Center for Respiratory Diseases, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
| | - Jianya Yang
- National Regional Traditional Chinese Medicine (Lung Disease) Diagnosis and Treatment Center, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
- Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-Construction by Henan Province and Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
- Henan International Joint Laboratory of Evidence-based Evaluation for Respiratory Diseases, Henan Province Clinical Research Center for Respiratory Diseases, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
| | - Tao Tian
- National Regional Traditional Chinese Medicine (Lung Disease) Diagnosis and Treatment Center, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
| | - Suyun Li
- National Regional Traditional Chinese Medicine (Lung Disease) Diagnosis and Treatment Center, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
- Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-Construction by Henan Province and Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
- Henan International Joint Laboratory of Evidence-based Evaluation for Respiratory Diseases, Henan Province Clinical Research Center for Respiratory Diseases, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
| | - Yang Xie
- National Regional Traditional Chinese Medicine (Lung Disease) Diagnosis and Treatment Center, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
- Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-Construction by Henan Province and Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
- Henan International Joint Laboratory of Evidence-based Evaluation for Respiratory Diseases, Henan Province Clinical Research Center for Respiratory Diseases, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
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Jones TL, Roberts C, Elliott S, Glaysher S, Green B, Shute JK, Chauhan AJ. Respiratory Pathogens at Exacerbation in Chronic Bronchitis With Airway Bacterial Colonisation: A Cohort Study. THE CLINICAL RESPIRATORY JOURNAL 2024; 18:e13811. [PMID: 39162176 PMCID: PMC11333943 DOI: 10.1111/crj.13811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/07/2024] [Accepted: 06/29/2024] [Indexed: 08/21/2024]
Abstract
BACKGROUND AND OBJECTIVE COPD and bronchiectasis are common causes of morbidity, particularly around exacerbation. Colonisation with respiratory pathogens can increase the frequency and severity of exacerbations. However, bacterial and viral presence at exacerbation in people with airway colonisation has not been well studied. METHODS A 6-month cohort study of participants (n = 30) with chronic bronchitis due to bronchiectasis (n = 26) and/or COPD (n = 13) and colonisation with Pseudomonas aeruginosa or Haemophilus influenzae was proven on two sputum cultures at exacerbation in the previous 12 months. Participants were provided self-management education and collected sputum samples daily. Sputum samples at baseline (at least 14 days before or after an exacerbation) and at each exacerbation were examined for a panel of 34 respiratory pathogens using commercially available RT-PCR kits and compared to results obtained using culture methods for the detection of bacteria. RESULTS Participants provided 29 baseline samples and 71 samples at exacerbation. In 17/29 baseline samples, RT-PCR analysis confirmed the organism demonstrated by culture, while 12 samples showed a discrepancy from culture results. Most exacerbations (57.7%) were not associated with acquiring new bacteria or viruses, while 19.8% showed new bacteria, 15.7% new viruses and 7% both new viruses and bacteria. CONCLUSION Over half of exacerbations were not associated with new organisms in this cohort of participants with chronic bronchitis and colonisation. However, 26.8% demonstrated a new bacterial species in sputum, which is relevant for antibiotic therapy. Baseline RT-PCR and culture results were discordant in one-third of participants.
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Affiliation(s)
- Thomas L Jones
- Department of Respiratory Medicine, Portsmouth Hospitals University NHS Trust, Portsmouth, UK
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, UK
| | - Claire Roberts
- Department of Respiratory Medicine, Portsmouth Hospitals University NHS Trust, Portsmouth, UK
| | - Scott Elliott
- Translational Research Laboratory, Portsmouth Hospitals University NHS Trust, Portsmouth, UK
| | - Sharon Glaysher
- Translational Research Laboratory, Portsmouth Hospitals University NHS Trust, Portsmouth, UK
| | - Ben Green
- Department of Respiratory Medicine, Portsmouth Hospitals University NHS Trust, Portsmouth, UK
| | - Janis K Shute
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, UK
| | - Anoop J Chauhan
- Department of Respiratory Medicine, Portsmouth Hospitals University NHS Trust, Portsmouth, UK
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9
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Yang F, Yang F, Huang J, Yu H, Qiao S. Microcin C7 as a Potential Antibacterial-Immunomodulatory Agent in the Postantibiotic Era: Overview of Its Bioactivity Aspects and Applications. Int J Mol Sci 2024; 25:7213. [PMID: 39000321 PMCID: PMC11241378 DOI: 10.3390/ijms25137213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 07/16/2024] Open
Abstract
In the postantibiotic era, the pathogenicity and resistance of pathogens have increased, leading to an increase in intestinal inflammatory disease. Bacterial infections remain the leading cause of animal mortality. With increasing resistance to antibiotics, there has been a significant decrease in resistance to both inflammation and disease in animals, thus decreasing production efficiency and increasing production costs. These side effects have serious consequences and have detracted from the development of China's pig industry. Microcin C7 (McC7) demonstrates potent antibacterial activity against a broad spectrum of pathogens, stable physicochemical properties, and low toxicity, reducing the likelihood of resistance development. Thus, McC7 has received increasing attention as a potential clinical antibacterial and immunomodulatory agent. McC7 has the potential to serve as a new generation of antibiotic substitutes; however, its commercial applications in the livestock and poultry industry have been limited. In this review, we summarize and discuss the biosynthesis, biochemical properties, structural characteristics, mechanism of action, and immune strategies of McC7. We also describe the ability of McC7 to improve intestinal health. Our aim in this study was to provide a theoretical basis for the application of McC7 as a new feed additive or new veterinary drug in the livestock and poultry breeding industry, thus providing a new strategy for alleviating resistance through feed and mitigating drug resistance. Furthermore, this review provides insight into the new functions and anti-infection mechanisms of bacteriocin peptides and proposes crucial ideas for the research, product development, and application of bacteriocin peptides in different fields, such as the food and medical industries.
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Affiliation(s)
- Fengjuan Yang
- State Key Laboratory of Animal Nutrition and Feeding, Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing 100193, China
- Beijing Biofeed Additives Key Laboratory, Beijing 100193, China
| | - Feiyun Yang
- Chongqing Academy of Animal Science, Rongchang, Chongqing 402460, China
- National Center of Technology Innovation for Pigs, Rongchang, Chongqing 402460, China
| | - Jinxiu Huang
- Chongqing Academy of Animal Science, Rongchang, Chongqing 402460, China
- National Center of Technology Innovation for Pigs, Rongchang, Chongqing 402460, China
| | - Haitao Yu
- State Key Laboratory of Animal Nutrition and Feeding, Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing 100193, China
- Beijing Biofeed Additives Key Laboratory, Beijing 100193, China
| | - Shiyan Qiao
- State Key Laboratory of Animal Nutrition and Feeding, Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing 100193, China
- Beijing Biofeed Additives Key Laboratory, Beijing 100193, China
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10
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Liu H, Li J, Guan C, Gao W, Li Y, Wang J, Yang Y, Du Y. Endometriosis is a disease of immune dysfunction, which could be linked to microbiota. Front Genet 2024; 15:1386411. [PMID: 38974388 PMCID: PMC11227297 DOI: 10.3389/fgene.2024.1386411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 05/29/2024] [Indexed: 07/09/2024] Open
Abstract
Background: Endometriosis, characterized by extrauterine endometrial tissue, leads to irregular bleeding and pelvic pain. Menstrual retrograde theory suggests fragments traverse fallopian tubes, causing inflammation and scar tissue. Prevalent among infertile women, risk factors include fewer pregnancies, delayed childbirth, irregular cycles, and familial predisposition. Treatments, medication, and surgery entail side effects. Studies link gut microbiota alterations to endometriosis, necessitating research to establish causation. We used Mendelian randomization to investigate the potential link between endometriosis and gut microbiota through genetic variants. Methods: Two-sample Mendelian randomization analyzed gut microbiota's potential causal effects on endometriosis. Instrumental variables, robustly associated with exposures, leveraged GWAS data from MiBioGen for gut microbiota and FinnGen R8 release for endometriosis. SNPs strongly associated with exposures were instrumental variables. Rigorous assessments ensured SNP impact scrutiny on endometriosis. Results: At the genus level, Anaerotruncus, Desulfovibrio, Haemophilus, and Holdemania showed causal association with endometriosis. Specific gut microbiota exhibited causal effects on different endometriosis stages. Holdemania and Ruminococcaceae UCG002 exerted reversible, stage-specific impacts. Conclusion: Mendelian randomization provides evidence for the causal link between specific gut microbiotas and endometriosis, emphasizing the pivotal role of gut microbiota dysbiosis. Modulating gut microbiota emerges as a promising strategy for preventing and treating endometriosis.
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Affiliation(s)
- Hongyan Liu
- Department of Family Planning, The Second Hospital of Tianjin Medical University, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Inflammatory Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Junxia Li
- Department of Family Planning, The Second Hospital of Tianjin Medical University, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Inflammatory Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Chenchen Guan
- Department of Family Planning, The Second Hospital of Tianjin Medical University, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Inflammatory Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
- Department of Bioinformatics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Wenjie Gao
- Department of Family Planning, The Second Hospital of Tianjin Medical University, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Inflammatory Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Yan Li
- Department of Family Planning, The Second Hospital of Tianjin Medical University, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Inflammatory Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Jianmei Wang
- Department of Family Planning, The Second Hospital of Tianjin Medical University, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Inflammatory Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Yang Yang
- Department of Family Planning, The Second Hospital of Tianjin Medical University, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Inflammatory Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
- Department of Bioinformatics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Yongrui Du
- Department of Family Planning, The Second Hospital of Tianjin Medical University, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Inflammatory Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
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Kim SH, Park JE, Yang B, Kim SY, Kim YY, Park JH. National trend in the prevalence and mortality of COPD in South Korea from 2008 to 2017. BMJ Open Respir Res 2024; 11:e002391. [PMID: 38897613 PMCID: PMC11191794 DOI: 10.1136/bmjresp-2024-002391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 05/31/2024] [Indexed: 06/21/2024] Open
Abstract
BACKGROUND Existing studies on chronic obstructive pulmonary disease (COPD) in Korea lack full population coverage, relying on small sample sizes. Therefore, this study aims to investigate the prevalence and mortality of COPD in the entire Korean population. METHODS This serial cross-sectional study used national databases, linking the National Health Information Database (2008-2017) with Causes of Death Statistics. Identification of individuals with COPD used diagnostic codes (International Classification of Diseases-10: J41-J44) or a history of COPD-related hospitalisation, focusing on adults aged 40 and above. Prevalence and mortality rates, calculated for 2008-2017, encompassed both crude and age-standardised and sex-standardised measures. A multivariate Poisson regression model estimated the association between COPD and all-cause and cause-specific mortality, presenting incidence rate ratios (IRRs) and 95% CIs, using data from the year 2017. RESULTS Age-adjusted COPD prevalence exhibited a notable increase from 2008 (7.9%) to 2017 (16.7%) in both sexes. The prevalences of diabetes mellitus, hypertension, dyslipidaemia, ischaemic heart disease, cancer, osteoporosis and tuberculosis were higher in the COPD group than in the group without COPD (p for all <0.001). The incidence of stroke and myocardial infarction (p for all <0.001) and overall mortality were higher in the COPD group (adjusted IRR 1.23, 95% CI 1.22 to 1.24, p<0.001). In particular, incidence rate and risk of mortality due to lung cancer were higher than that of those without COPD compared with other cancer types (adjusted IRR 2.51, 95% CI 2.42 to 2.60, p<0.001). It was significantly higher the incidence rate and risk of mortality among group with COPD than those without COPD in lower respiratory disease (adjusted IRR 16.62, 95% CI 15.07 to 18.33, p<0.001), asthma (adjusted IRR 6.41, 95% CI 5.47 to 7.51, p<0.001) and bronchiectasis (adjusted IRR 11.77, 95% CI 7.59 to 18.26, p<0.001), respectively. DISCUSSION Our study showed that the prevalence of COPD is gradually increasing from 9.2% in 2009 to 16.7% in 2018. Furthermore, in overall (all-cause) mortality, it was significantly higher in group with COPD than in group without COPD. The mortality rate of group with COPD was much higher than the overall mortality rate but is gradually decreasing.
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Affiliation(s)
- Sun-Hyung Kim
- Division of Pulmonary and Critical Care Medicine, Chungbuk National University Hospital, Cheongju, Korea
- Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Jong Eun Park
- Institutes of Health & Science Convergence, Chungbuk National University, Cheongju, Korea
| | - Bumhee Yang
- Division of Pulmonary and Critical Care Medicine, Chungbuk National University Hospital, Cheongju, Korea
- Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Korea
| | - So Young Kim
- Institutes of Health & Science Convergence, Chungbuk National University, Cheongju, Korea
- Department of Public Health and Preventive Medicine, Chungbuk National University Hospital, Cheongju, Korea
| | - Yeon Yong Kim
- Big Data Steering Department, National Health Insurance Service, Wonju, Korea
- Drug Evaluation Department, National Institute of Food and Drug Safety Evaluation, Cheongju, Korea
| | - Jong Hyock Park
- Institutes of Health & Science Convergence, Chungbuk National University, Cheongju, Korea
- Department of Public Health and Preventive Medicine, Chungbuk National University Hospital, Cheongju, Korea
- College of Medicine, Chungbuk National University, Cheongju, Korea
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12
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Mou K, Chan SMH, Vlahos R. Musculoskeletal crosstalk in chronic obstructive pulmonary disease and comorbidities: Emerging roles and therapeutic potentials. Pharmacol Ther 2024; 257:108635. [PMID: 38508342 DOI: 10.1016/j.pharmthera.2024.108635] [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: 11/06/2023] [Revised: 02/13/2024] [Accepted: 03/11/2024] [Indexed: 03/22/2024]
Abstract
Chronic Obstructive Pulmonary Disease (COPD) is a multifaceted respiratory disorder characterized by progressive airflow limitation and systemic implications. It has become increasingly apparent that COPD exerts its influence far beyond the respiratory system, extending its impact to various organ systems. Among these, the musculoskeletal system emerges as a central player in both the pathogenesis and management of COPD and its associated comorbidities. Muscle dysfunction and osteoporosis are prevalent musculoskeletal disorders in COPD patients, leading to a substantial decline in exercise capacity and overall health. These manifestations are influenced by systemic inflammation, oxidative stress, and hormonal imbalances, all hallmarks of COPD. Recent research has uncovered an intricate interplay between COPD and musculoskeletal comorbidities, suggesting that muscle and bone tissues may cross-communicate through the release of signalling molecules, known as "myokines" and "osteokines". We explored this dynamic relationship, with a particular focus on the role of the immune system in mediating the cross-communication between muscle and bone in COPD. Moreover, we delved into existing and emerging therapeutic strategies for managing musculoskeletal disorders in COPD. It underscores the development of personalized treatment approaches that target both the respiratory and musculoskeletal aspects of COPD, offering the promise of improved well-being and quality of life for individuals grappling with this complex condition. This comprehensive review underscores the significance of recognizing the profound impact of COPD on the musculoskeletal system and its comorbidities. By unravelling the intricate connections between these systems and exploring innovative treatment avenues, we can aspire to enhance the overall care and outcomes for COPD patients, ultimately offering hope for improved health and well-being.
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Affiliation(s)
- Kevin Mou
- Centre for Respiratory Science and Health, School of Health & Biomedical Sciences, RMIT University, Melbourne, VIC, Australia
| | - Stanley M H Chan
- Centre for Respiratory Science and Health, School of Health & Biomedical Sciences, RMIT University, Melbourne, VIC, Australia
| | - Ross Vlahos
- Centre for Respiratory Science and Health, School of Health & Biomedical Sciences, RMIT University, Melbourne, VIC, Australia.
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13
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Pragman AA, Hodgson SW, Wu T, Zank A, Kelly RF, Reilly CS, Wendt CH. Tobacco use, self-reported professional dental cleaning habits, and lung adenocarcinoma diagnosis are associated with bronchial and lung microbiome alpha diversity. Respir Res 2024; 25:130. [PMID: 38500160 PMCID: PMC10949571 DOI: 10.1186/s12931-024-02750-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 02/25/2024] [Indexed: 03/20/2024] Open
Abstract
RATIONALE The lung microbiome is an inflammatory stimulus whose role in the development of lung malignancies is incompletely understood. We hypothesized that the lung microbiome associates with multiple clinical factors, including the presence of a lung malignancy. OBJECTIVES To assess associations between the upper and lower airway microbiome and multiple clinical factors including lung malignancy. METHODS We conducted a prospective cohort study of upper and lower airway microbiome samples from 44 subjects undergoing lung lobectomy for suspected or confirmed lung cancer. Subjects provided oral (2), induced sputum, nasopharyngeal, bronchial, and lung tissue (3) samples. Pathologic diagnosis, age, tobacco use, dental care history, lung function, and inhaled corticosteroid use were associated with upper and lower airway microbiome findings. MEASUREMENTS AND MAIN RESULTS Older age was associated with greater Simpson diversity in the oral and nasopharyngeal sites (p = 0.022 and p = 0.019, respectively). Current tobacco use was associated with greater lung and bronchus Simpson diversity (p < 0.0001). Self-reported last profession dental cleaning more than 6 months prior (vs. 6 or fewer months prior) was associated with lower lung and bronchus Simpson diversity (p < 0.0001). Diagnosis of a lung adenocarcinoma (vs. other pathologic findings) was associated with lower bronchus and lung Simpson diversity (p = 0.024). Last professional dental cleaning, dichotomized as ≤ 6 months vs. >6 months prior, was associated with clustering among lung samples (p = 0.027, R2 = 0.016). Current tobacco use was associated with greater abundance of pulmonary pathogens Mycoplasmoides and Haemophilus in lower airway samples. Self-reported professional dental cleaning ≤ 6 months prior (vs. >6 months prior) was associated with greater bronchial Actinomyces and lung Streptococcus abundance. Lung adenocarcinoma (vs. no lung adenocarcinoma) was associated with lower Lawsonella abundance in lung samples. Inhaled corticosteroid use was associated with greater abundance of Haemophilus among oral samples and greater Staphylococcus among lung samples. CONCLUSIONS Current tobacco use, recent dental cleaning, and a diagnosis of adenocarcinoma are associated with lung and bronchial microbiome α-diversity, composition (β-diversity), and the abundance of several respiratory pathogens. These findings suggest that modifiable habits (tobacco use and dental care) may influence the lower airway microbiome. Larger controlled studies to investigate these potential associations are warranted.
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Affiliation(s)
- Alexa A Pragman
- Department of Medicine, Minneapolis VA Health Care System and University of Minnesota, 111F, 1 Veterans Dr, Minneapolis, MN, 55417, USA.
| | - Shane W Hodgson
- Research Service, Minneapolis VA Health Care System, Minneapolis, MN, USA
| | - Tianhua Wu
- Division of Biostatistics, University of Minnesota, Minneapolis, MN, USA
| | - Allison Zank
- Research Service, Minneapolis VA Health Care System, Minneapolis, MN, USA
| | - Rosemary F Kelly
- Department of Surgery, Minneapolis VA Health Care System and University of Minnesota, Minneapolis, MN, USA
| | - Cavan S Reilly
- Division of Biostatistics, University of Minnesota, Minneapolis, MN, USA
| | - Chris H Wendt
- Department of Medicine, Minneapolis VA Health Care System and University of Minnesota, 111F, 1 Veterans Dr, Minneapolis, MN, 55417, USA
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Pragman AA, Hodgson SW, Wu T, Zank A, Reilly CS, Wendt CH. Sputum microbiome α-diversity is a key feature of the COPD frequent exacerbator phenotype. ERJ Open Res 2024; 10:00595-2023. [PMID: 38333651 PMCID: PMC10851948 DOI: 10.1183/23120541.00595-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 11/07/2023] [Indexed: 02/10/2024] Open
Abstract
Background The lung microbiome is an inflammatory stimulus whose role in COPD pathogenesis is incompletely understood. We hypothesised that the frequent exacerbator phenotype is associated with decreased α-diversity and increased lung inflammation. Our objective was to assess correlations between the frequent exacerbator phenotype, the microbiome and inflammation longitudinally during exacerbation-free periods. Methods We conducted a case-control longitudinal observational study of the frequent exacerbator phenotype and characteristics of the airway microbiome. 81 subjects (41 frequent and 40 infrequent exacerbators) provided nasal, oral and sputum microbiome samples at two visits over 2-4 months. Exacerbation phenotype, relevant clinical factors and sputum cytokine values were associated with microbiome findings. Results The frequent exacerbator phenotype was associated with lower sputum microbiome α-diversity (p=0.0031). This decrease in α-diversity among frequent exacerbators was enhanced when the sputum bacterial culture was positive (p<0.001). Older age was associated with decreased sputum microbiome α-diversity (p=0.0030). Between-visit β-diversity was increased among frequent exacerbators and those who experienced a COPD exacerbation between visits (p=0.025 and p=0.014, respectively). Sputum cytokine values did not differ based on exacerbation phenotype or other clinical characteristics. Interleukin (IL)-17A was negatively associated with α-diversity, while IL-6 and IL-8 were positively associated with α-diversity (p=0.012, p=0.012 and p=0.0496, respectively). IL-22, IL-17A and IL-5 levels were positively associated with Moraxella abundance (p=0.027, p=0.0014 and p=0.0020, respectively). Conclusions Even during exacerbation-free intervals, the COPD frequent exacerbator phenotype is associated with decreased sputum microbiome α-diversity and increased β-diversity. Decreased sputum microbiome α-diversity and Moraxella abundance are associated with lung inflammation.
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Affiliation(s)
- Alexa A. Pragman
- Department of Medicine, Minneapolis VA Health Care System and Department of Medicine, University of Minnesota, Minneapolis, MN, USA
| | - Shane W. Hodgson
- Research Service, Minneapolis VA Health Care System, Minneapolis, MN, USA
| | - Tianhua Wu
- Division of Biostatistics, University of Minnesota, Minneapolis, MN, USA
| | - Allison Zank
- Research Service, Minneapolis VA Health Care System, Minneapolis, MN, USA
| | - Cavan S. Reilly
- Division of Biostatistics, University of Minnesota, Minneapolis, MN, USA
| | - Chris H. Wendt
- Department of Medicine, Minneapolis VA Health Care System and Department of Medicine, University of Minnesota, Minneapolis, MN, USA
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15
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Ran B, Ran L, Wang Z, Liao J, Li D, Chen K, Cai W, Hou J, Peng X. Photocatalytic Antimicrobials: Principles, Design Strategies, and Applications. Chem Rev 2023; 123:12371-12430. [PMID: 37615679 DOI: 10.1021/acs.chemrev.3c00326] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
Nowadays, the increasing emergence of antibiotic-resistant pathogenic microorganisms requires the search for alternative methods that do not cause drug resistance. Phototherapy strategies (PTs) based on the photoresponsive materials have become a new trend in the inactivation of pathogenic microorganisms due to their spatiotemporal controllability and negligible side effects. Among those phototherapy strategies, photocatalytic antimicrobial therapy (PCAT) has emerged as an effective and promising antimicrobial strategy in recent years. In the process of photocatalytic treatment, photocatalytic materials are excited by different wavelengths of lights to produce reactive oxygen species (ROS) or other toxic species for the killing of various pathogenic microbes, such as bacteria, viruses, fungi, parasites, and algae. Therefore, this review timely summarizes the latest progress in the PCAT field, with emphasis on the development of various photocatalytic antimicrobials (PCAMs), the underlying antimicrobial mechanisms, the design strategies, and the multiple practical antimicrobial applications in local infections therapy, personal protective equipment, water purification, antimicrobial coatings, wound dressings, food safety, antibacterial textiles, and air purification. Meanwhile, we also present the challenges and perspectives of widespread practical implementation of PCAT as antimicrobial therapeutics. We hope that as a result of this review, PCAT will flourish and become an effective weapon against pathogenic microorganisms and antibiotic resistance.
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Affiliation(s)
- Bei Ran
- Institute of Regulatory Science for Medical Devices, Sichuan University, Chengdu 610064, P. R. China
| | - Lei Ran
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
- Ability R&D Energy Centre, School of Energy and Environment, City University of Hong Kong, Hong Kong 999077, P. R. China
| | - Zuokai Wang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
| | - Jinfeng Liao
- West China Hospital of Stomatology Sichuan University, Chengdu 610064, P. R. China
| | - Dandan Li
- West China Hospital of Stomatology Sichuan University, Chengdu 610064, P. R. China
| | - Keda Chen
- Ability R&D Energy Centre, School of Energy and Environment, City University of Hong Kong, Hong Kong 999077, P. R. China
| | - Wenlin Cai
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
| | - Jungang Hou
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
- State Key Laboratory of Fine Chemicals, College of Material Science and Engineering, Shenzhen University, Shenzhen 518071, P. R. China
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Jiang M, Li Z, Zhang F, Li Z, Xu D, Jing J, Li F, Wang J, Ding J. Butyrate inhibits iILC2-mediated lung inflammation via lung-gut axis in chronic obstructive pulmonary disease (COPD). BMC Pulm Med 2023; 23:163. [PMID: 37173731 PMCID: PMC10182695 DOI: 10.1186/s12890-023-02438-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 04/17/2023] [Indexed: 05/15/2023] Open
Abstract
BACKGROUND The study investigated the effects and underlying mechanisms of intestinal flora metabolite butyrate on inflammatory ILC2 cells (iILC2s)-mediated lung inflammation in chronic obstructive pulmonary disease (COPD). METHODS Mouse models of COPD and acute exacerbation of COPD (AECOPD) were established. Flow cytometry was used to detect natural ILC2 cells (nILC2s) and iILC2s in lung and colon tissues. The 16s rRNA and GC-MS were used to detect microbial flora and short chain fatty acids (SCFAs) in feces. ELISA was used to detect IL-13 and IL-4. Western blot and qRT-PCR were used to detect the relative protein and mRNA levels, respectively. In vitro experiments were performed with sorted ILC2s from colon tissues of control mice. Mice with AECOPD were treated with butyrate. RESULTS The nILC2s and iILC2s in lung and colon tissues of AECOPD mice were significantly higher than control groups. The abundance of the flora Clostridiaceae was significantly reduced, and the content of SCFAs, including acetate and butyrate, was significantly reduced. The in vitro experiments showed that butyrate inhibited iILC2 cell phenotype and cytokine secretion. Butyrate treatment reduced the proportion of iILC2 cells in the colon and lung tissues of mice with AECOPD. CONCLUSIONS The nILC2s and iILC2s in the colon tissues are involved in the course of COPD. Decreased Clostridiaceae and butyrate in AECOPD mice caused the accumulation of iILC2 cells in the intestines and lungs. Supplementation of butyrate can reduce iILC2 in the intestine and lung tissues. Our data may provide new ideas for prevention and treatment of COPD.
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Affiliation(s)
- Min Jiang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University, Urumqi, 830011, Xinjiang, China
- Xinjiang Key Laboratory of Respiratory Disease Research, Traditional Chinese Medical Hospital of Xinjiang Uygur Autonomous Region, No. 116, Huanghe Road, Urumqi, 830011, Xinjiang, China
| | - Zhiwei Li
- Clinical Laboratory Center, People's Hospital of Xinjiang Uygur Autonomous, Urumqi, 830001, Xinjiang, China
| | - Fengbo Zhang
- Department of Clinical Laboratory, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054, Xinjiang, China
| | - Zheng Li
- Xinjiang Key Laboratory of Respiratory Disease Research, Traditional Chinese Medical Hospital of Xinjiang Uygur Autonomous Region, No. 116, Huanghe Road, Urumqi, 830011, Xinjiang, China
| | - Dan Xu
- Xinjiang Key Laboratory of Respiratory Disease Research, Traditional Chinese Medical Hospital of Xinjiang Uygur Autonomous Region, No. 116, Huanghe Road, Urumqi, 830011, Xinjiang, China
| | - Jing Jing
- Xinjiang Key Laboratory of Respiratory Disease Research, Traditional Chinese Medical Hospital of Xinjiang Uygur Autonomous Region, No. 116, Huanghe Road, Urumqi, 830011, Xinjiang, China
| | - Fengsen Li
- Xinjiang Key Laboratory of Respiratory Disease Research, Traditional Chinese Medical Hospital of Xinjiang Uygur Autonomous Region, No. 116, Huanghe Road, Urumqi, 830011, Xinjiang, China
| | - Jing Wang
- Xinjiang Key Laboratory of Respiratory Disease Research, Traditional Chinese Medical Hospital of Xinjiang Uygur Autonomous Region, No. 116, Huanghe Road, Urumqi, 830011, Xinjiang, China.
| | - Jianbing Ding
- Department of Immunology, College of Basic Medicine, Xinjiang Medical University, No. 4, Xinyi Road, Urumqi, 830011, Xinjiang, China.
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Chakraborty A, Diwan A, Tatake J. Prospect of nanomaterials as antimicrobial and antiviral regimen. AIMS Microbiol 2023; 9:444-466. [PMID: 37649798 PMCID: PMC10462459 DOI: 10.3934/microbiol.2023024] [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: 01/05/2023] [Revised: 03/09/2023] [Accepted: 04/17/2023] [Indexed: 09/01/2023] Open
Abstract
In recent years studies of nanomaterials have been explored in the field of microbiology due to the increasing evidence of antibiotic resistance. Nanomaterials could be inorganic or organic, and they may be synthesized from natural products from plant or animal origin. The therapeutic applications of nano-materials are wide, from diagnosis of disease to targeted delivery of drugs. Broad-spectrum antiviral and antimicrobial activities of nanoparticles are also well evident. The ratio of nanoparticles surface area to their volume is high and that allows them to be an advantageous vehicle of drugs in many respects. Effective uses of various materials for the synthesis of nanoparticles impart much specificity in them to meet the requirements of specific therapeutic strategies. The potential therapeutic use of nanoparticles and their mechanisms of action against infections from bacteria, fungi and viruses were the focus of this review. Further, their potential advantages, drawbacks, limitations and side effects are also included here. Researchers are characterizing the exposure pathways of nano-medicines that may cause serious toxicity to the subjects or the environment. Indeed, societal ethical issues in using nano-medicines pose a serious question to scientists beyond anything.
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Chen D, Zeng Q, Liu L, Zhou Z, Qi W, Yu S, Zhao L. Global Research Trends on the Link Between the Microbiome and COPD: A Bibliometric Analysis. Int J Chron Obstruct Pulmon Dis 2023; 18:765-783. [PMID: 37180751 PMCID: PMC10167978 DOI: 10.2147/copd.s405310] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 04/30/2023] [Indexed: 05/16/2023] Open
Abstract
Background The pathogenesis of chronic obstructive pulmonary disease (COPD) has been studied in relation to the microbiome, providing space for more targeted interventions and new treatments. Numerous papers on the COPD microbiome have been reported in the last 10 years, yet few publications have used bibliometric methods to evaluate this area. Methods We searched the Web of Science Core Collection for all original research articles in the field of COPD microbiome from January 2011 to August 2022 and used CiteSpace for visual analysis. Results A total of 505 relevant publications were obtained, and the number of global publications in this field is steadily increasing every year, with China and the USA occupying the first two spots in international publications. Imperial College London and the University of Leicester produced the most publications. Brightling C from the UK was the most prolific writer, while Huang Y and Sze M from the USA were first and second among the authors cited. The American Journal of Respiratory and Critical Care Medicine had the highest frequency of citations. The top 10 institutions, cited authors and journals are mostly from the UK and the US. In the ranking of citations, the first article was a paper published by Sze M on changes in the lung tissue's microbiota in COPD patients. The keywords "exacerbation", "gut microbiota", "lung microbiome", "airway microbiome", "bacterial colonization", and "inflammation" were identified as cutting-edge research projects for 2011-2022. Conclusion Based on the visualization results, in the future, we can use the gut-lung axis as the starting point to explore the immunoinflammatory mechanism of COPD, and study how to predict the effects of different treatments of COPD by identifying the microbiota, and how to achieve the optimal enrichment of beneficial bacteria and the optimal consumption of harmful bacteria to improve COPD.
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Affiliation(s)
- Daohong Chen
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, People’s Republic of China
| | - Qian Zeng
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, People’s Republic of China
| | - Lu Liu
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, People’s Republic of China
| | - Ziyang Zhou
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, People’s Republic of China
| | - Wenchuan Qi
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, People’s Republic of China
| | - Shuguang Yu
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, People’s Republic of China
| | - Ling Zhao
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, People’s Republic of China
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Marzaman ANF, Roska TP, Sartini S, Utami RN, Sulistiawati S, Enggi CK, Manggau MA, Rahman L, Shastri VP, Permana AD. Recent Advances in Pharmaceutical Approaches of Antimicrobial Agents for Selective Delivery in Various Administration Routes. Antibiotics (Basel) 2023; 12:822. [PMID: 37237725 PMCID: PMC10215767 DOI: 10.3390/antibiotics12050822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/15/2023] [Accepted: 04/24/2023] [Indexed: 05/28/2023] Open
Abstract
Globally, the increase of pathogenic bacteria with antibiotic-resistant characteristics has become a critical challenge in medical treatment. The misuse of conventional antibiotics to treat an infectious disease often results in increased resistance and a scarcity of effective antimicrobials to be used in the future against the organisms. Here, we discuss the rise of antimicrobial resistance (AMR) and the need to combat it through the discovery of new synthetic or naturally occurring antibacterial compounds, as well as insights into the application of various drug delivery approaches delivered via various routes compared to conventional delivery systems. AMR-related infectious diseases are also discussed, as is the efficiency of various delivery systems. Future considerations in developing highly effective antimicrobial delivery devices to address antibiotic resistance are also presented here, especially on the smart delivery system of antibiotics.
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Affiliation(s)
- Ardiyah Nurul Fitri Marzaman
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia; (A.N.F.M.); (T.P.R.); (S.S.); (R.N.U.); (S.S.); (C.K.E.); (M.A.M.); (L.R.)
| | - Tri Puspita Roska
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia; (A.N.F.M.); (T.P.R.); (S.S.); (R.N.U.); (S.S.); (C.K.E.); (M.A.M.); (L.R.)
| | - Sartini Sartini
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia; (A.N.F.M.); (T.P.R.); (S.S.); (R.N.U.); (S.S.); (C.K.E.); (M.A.M.); (L.R.)
| | - Rifka Nurul Utami
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia; (A.N.F.M.); (T.P.R.); (S.S.); (R.N.U.); (S.S.); (C.K.E.); (M.A.M.); (L.R.)
| | - Sulistiawati Sulistiawati
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia; (A.N.F.M.); (T.P.R.); (S.S.); (R.N.U.); (S.S.); (C.K.E.); (M.A.M.); (L.R.)
| | - Cindy Kristina Enggi
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia; (A.N.F.M.); (T.P.R.); (S.S.); (R.N.U.); (S.S.); (C.K.E.); (M.A.M.); (L.R.)
| | - Marianti A. Manggau
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia; (A.N.F.M.); (T.P.R.); (S.S.); (R.N.U.); (S.S.); (C.K.E.); (M.A.M.); (L.R.)
| | - Latifah Rahman
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia; (A.N.F.M.); (T.P.R.); (S.S.); (R.N.U.); (S.S.); (C.K.E.); (M.A.M.); (L.R.)
| | - Venkatram Prasad Shastri
- Institute for Macromolecular Chemistry, Albert Ludwigs Universitat Freiburg, 79085 Freiburg, Germany;
| | - Andi Dian Permana
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia; (A.N.F.M.); (T.P.R.); (S.S.); (R.N.U.); (S.S.); (C.K.E.); (M.A.M.); (L.R.)
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20
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Xue Q, Xie Y, He Y, Yu Y, Fang G, Yu W, Wu J, Li J, Zhao L, Deng X, Li R, Wang F, Zheng Y, Gao Z. Lung microbiome and cytokine profiles in different disease states of COPD: a cohort study. Sci Rep 2023; 13:5715. [PMID: 37029178 PMCID: PMC10080507 DOI: 10.1038/s41598-023-32901-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 04/04/2023] [Indexed: 04/09/2023] Open
Abstract
Increasing evidence indicates that respiratory tract microecological disorders may play a role in the pathogenesis of chronic obstructive pulmonary disease (COPD). Understanding the composition of the respiratory microbiome in COPD and its relevance to respiratory immunity will help develop microbiome-based diagnostic and therapeutic approaches. One hundred longitudinal sputum samples from 35 subjects with acute exacerbation of COPD (AECOPD) were analysed for respiratory bacterial microbiome using 16S ribosomal RNA amplicon sequencing technology, and the sputum supernatant was analysed for 12 cytokines using a Luminex liquid suspension chip. Unsupervised hierarchical clustering was employed to evaluate the existence of distinct microbial clusters. In AECOPD, the respiratory microbial diversity decreased, and the community composition changed significantly. The abundances of Haemophilus, Moraxella, Klebsiella, and Pseudomonas increased significantly. Significant positive correlations between the abundance of Pseudomonas and TNF-α, abundance of Klebsiella and the percentage of eosinophils were observed. Furthermore, COPD can be divided into four clusters based on the respiratory microbiome. AECOPD-related cluster was characterized by the enrichment of Pseudomonas and Haemophilus and a high level of TNF-α. Lactobacillus and Veillonella are enriched in therapy-related phenotypes and may play potential probiotic roles. There are two inflammatory endotypes in the stable state: Gemella is associated with the Th2 inflammatory endotypes, whereas Prevotella is associated with the Th17 inflammatory endotypes. Nevertheless, no differences in clinical manifestations were found between these two endotypes. The sputum microbiome is associated with the disease status of COPD, allowing us to distinguish different inflammatory endotypes. Targeted anti-inflammatory and anti-infective therapies may improve the long-term prognosis of COPD.
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Affiliation(s)
- Qing Xue
- The Third Clinical Medical College, Fujian Medical University, Ningde Municipal Hospital, Ningde, Fujian, China
| | - Yu Xie
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing, 100044, China
- Department of Respiratory Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yukun He
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing, 100044, China
| | - Yan Yu
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing, 100044, China
| | - Guiju Fang
- The Third Clinical Medical College, Fujian Medical University, Ningde Municipal Hospital, Ningde, Fujian, China
| | - Wenyi Yu
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing, 100044, China
| | - Jianhui Wu
- The Third Clinical Medical College, Fujian Medical University, Ningde Municipal Hospital, Ningde, Fujian, China
| | - Jiwei Li
- Department of Respiratory, Critical Care, and Sleep Medicine, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361101, China
| | - Lili Zhao
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing, 100044, China
| | - Xinyu Deng
- The Third Clinical Medical College, Fujian Medical University, Ningde Municipal Hospital, Ningde, Fujian, China
| | - Ran Li
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing, 100044, China
| | - Fang Wang
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing, 100044, China
| | - Yali Zheng
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing, 100044, China.
- Department of Respiratory, Critical Care, and Sleep Medicine, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361101, China.
| | - Zhancheng Gao
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing, 100044, China.
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21
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Ho DS, Dinh HC, Le TD, Ho DT, Ngo HT, Nguyen CD. Sputum culture and antibiotic resistance in elderly inpatients with exacerbation of chronic obstructive pulmonary disease at a tertiary geriatric hospital in southern Vietnam. Aging Clin Exp Res 2023; 35:1347-1356. [PMID: 37017876 DOI: 10.1007/s40520-023-02401-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 03/23/2023] [Indexed: 04/06/2023]
Abstract
OBJECTIVE To determine the rate of positive culture sputum and related factors as well as the microorganism features and antibiotic susceptibility of pathogens in elderly inpatients with exacerbation of chronic obstructive pulmonary disease (COPD) in Thong Nhat Hospital, Vietnam. METHODS This cross-sectional study included elderly patients admitted to the hospital because of exacerbation of COPD. Data of their medical history, symptoms and signs were collected, and the patients were instructed to collect sputum sample. A positive culture was identified with the growth of ≥ 105 colony-forming units per milliliter. Antibiotic susceptibility testing was performed according to the European Committee on Antimicrobial Susceptibility Testing. RESULTS There were 167 participants (mean age: 77.5 ± 8.8 years, 87.4% male). The culture-positive rate was 25.1%. A higher proportion of positive culture was among participants with purulent sputum (p = 0.029) and with severe and very severe airflow obstruction (p = 0.005). Three most common agents were Acinetobacter baumannii (24.4%), Klebsiella pneumoniae (22.2%), and Pseudomonas aeruginosa (15.6%). Despite high resistance to almost other antibiotics (> 50% resistance), Acinetobacter baumannii and Pseudomonas aeruginosa were sensitive to colistin, tobramycin, and gentamicin (> 80% susceptibility). Klebsiella pneumoniae was highly sensitive to almost common antibiotics (> 80% susceptibility). Among Gram-positive pathogens, methicillin-resistant Staphylococcus aureus (MRSA) was completely sensitive to vancomycin, teicoplanin, and linezolid. CONCLUSION The sputum culture-positive rate in this study was not high. Most prevalent isolated pathogens were Acinetobacter baumannii, Klebsiella pneumoniae, and Pseudomonas aeruginosa. Acinetobacter baumannii and Pseudomonas aeruginosa were sensitive to tobramycin, gentamicin, and colistin. Commonly used antibiotics remained effective against Klebsiella pneumoniae. MRSA was sensitive to vancomycin, teicoplanin, and linezolid.
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Affiliation(s)
- Dung Si Ho
- Pham Ngoc Thach University of Medicine, 02 Duong Quang Trung Street, District 10, Ho Chi Minh City, Vietnam
- Thong Nhat Hospital, 01 Ly Thuong Kiet Street, Tan Binh District, Ho Chi Minh City, Vietnam
| | - Hung Cao Dinh
- Pham Ngoc Thach University of Medicine, 02 Duong Quang Trung Street, District 10, Ho Chi Minh City, Vietnam
| | - Thanh Dinh Le
- Pham Ngoc Thach University of Medicine, 02 Duong Quang Trung Street, District 10, Ho Chi Minh City, Vietnam
- Thong Nhat Hospital, 01 Ly Thuong Kiet Street, Tan Binh District, Ho Chi Minh City, Vietnam
| | - Dung Thuong Ho
- Pham Ngoc Thach University of Medicine, 02 Duong Quang Trung Street, District 10, Ho Chi Minh City, Vietnam
- Thong Nhat Hospital, 01 Ly Thuong Kiet Street, Tan Binh District, Ho Chi Minh City, Vietnam
| | - Hoang The Ngo
- Thong Nhat Hospital, 01 Ly Thuong Kiet Street, Tan Binh District, Ho Chi Minh City, Vietnam
| | - Cong Duc Nguyen
- Pham Ngoc Thach University of Medicine, 02 Duong Quang Trung Street, District 10, Ho Chi Minh City, Vietnam.
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22
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Sivakumaran S, Alsallakh MA, Lyons RA, Quint JK, Davies GA. Estimating the contribution of respiratory pathogens to acute exacerbations of COPD using routine data. J Infect 2023; 86:233-238. [PMID: 36706962 DOI: 10.1016/j.jinf.2023.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/28/2022] [Accepted: 01/11/2023] [Indexed: 01/26/2023]
Abstract
OBJECTIVES To characterise microbiology testing and results associated with emergency admissions for acute exacerbation of COPD (AECOPD), and determine the accuracy of ICD-10 codes in retrospectively identifying laboratory-confirmed respiratory pathogens in this setting. METHODS Using person-level data from the Secure Anonymised Information Linkage Databank in Wales, we extracted emergency admissions for COPD from 1/12/2016 to 30/11/2018 and undertook linkage of admissions data to microbiology data to identify laboratory-confirmed infection. We further used these data to assess the accuracy of pathogen-specific ICD-10 codes. RESULTS We analysed data from 15,950 people who had 25,715 emergency admissions for COPD over the two-year period. 99.5% of admissions could be linked to a laboratory test within 7 days of admission date. Sputum was collected in 5,013 (19.5%) of admissions, and respiratory virus testing in 1,219 (4.7%). Where respiratory virus testing was undertaken, 46.7% returned any positive result. Influenza was the virus most frequently detected, in 21.5% of admissions where testing was conducted. ICD-10 codes exhibited low sensitivity in detecting laboratory-confirmed respiratory pathogens. CONCLUSIONS In people admitted to hospital with AECOPD, increased testing for respiratory viruses could enable more effective antibiotic stewardship and isolation of cases. Linkage with microbiology data achieves more accurate and reliable case definitions.
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Affiliation(s)
- Shanya Sivakumaran
- Population Data Science, Swansea University Medical School, Swansea, UK.
| | | | - Ronan A Lyons
- Population Data Science, Swansea University Medical School, Swansea, UK
| | - Jennifer K Quint
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Gwyneth A Davies
- Population Data Science, Swansea University Medical School, Swansea, UK
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23
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Triantafyllidou C, Effraimidis P, Vougas K, Agholme J, Schimanke M, Cederquist K. The Role of Early Warning Scoring Systems NEWS and MEWS in the Acute Exacerbation of COPD. Clin Med Insights Circ Respir Pulm Med 2023; 17:11795484231152305. [PMID: 36726647 PMCID: PMC9884954 DOI: 10.1177/11795484231152305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 01/04/2023] [Indexed: 01/26/2023] Open
Abstract
Acute exacerbations of chronic obstructive pulmonary disease (AECOPD) are the most devastating events in the course of the disease. Our aim was to investigate the value of early warning scoring systems: National Early Warning Score (NEWS) and Modified Early Warning Score (MEWS) in AECOPD. This is a prospective observational study of patients with AECOPD who were admitted at hospital. The NEWS and MEWS scores were registered at admission (NEWS-d1, MEWS-d1) and on the second day (NEWS-d2, MEWS-d2). A nasopharyngeal and sputum sample was taken for culture. Follow-up was done at 3 and 6 months after hospitalization. Any possible correlations between NEWS and MEWS and other parameters of COPD were explored. A cohort of 64 patients were included. In-hospital mortality was 4.7% while total mortality at 6 months was 26%. We did not find any significant correlation between in-hospital mortality and any of the scores but we could show a higher mortality and more frequent AECOPD at 6 months of follow-up for those with higher NEWS-d2. NEWS-d2 was associated with higher pCO2 at presentation and a more frequent use of NIV. Higher NEWS-d1 and NEWS-d2 were predictive of a longer hospital stay. The presence of pathogens in the nasopharyngeal sample was related with a higher reduction of both scores on the second day. We therefore support the superiority of NEWS in the evaluation of hospitalized patients with AECOPD. A remaining high NEWS at the second day of hospital stay signals a high risk of hypercapnia and need of NIV but also higher mortality and more frequent exacerbations at 6 months after AECOPD.
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Affiliation(s)
- Christina Triantafyllidou
- Department of Internal Medicine, Section of Pulmonary Medicine,
Vrinnevi Hospital, Norrköping, Sweden,Christina Triantafyllidou, Department of
Internal Medicine, Section of Pulmonary Medicine, Vrinnevi Hospital, Gamla
Övägen 25, Norrköping, Sweden.
| | - Petros Effraimidis
- Department of Internal Medicine, Section of Pulmonary Medicine,
Vrinnevi Hospital, Norrköping, Sweden
| | - Konstantinos Vougas
- Biomedical Research Foundation of the
Academy of Athens, Athens, Greece,Molecular Carcinogenesis Group, Department of Histology and
Embryology, School of Medicine, National and Kapodistrian University of Athens,
Athens, Greece
| | - Jonas Agholme
- Department of Internal Medicine, Section of Pulmonary Medicine,
Vrinnevi Hospital, Norrköping, Sweden
| | - Mirjam Schimanke
- Department of Internal Medicine, Section of Pulmonary Medicine,
Vrinnevi Hospital, Norrköping, Sweden
| | - Karin Cederquist
- Department of Internal Medicine, Section of Pulmonary Medicine,
Vrinnevi Hospital, Norrköping, Sweden
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24
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The establishment of COPD organoids to study host-pathogen interaction reveals enhanced viral fitness of SARS-CoV-2 in bronchi. Nat Commun 2022; 13:7635. [PMID: 36496442 PMCID: PMC9735280 DOI: 10.1038/s41467-022-35253-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 11/22/2022] [Indexed: 12/13/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is characterised by airflow limitation and infective exacerbations, however, in-vitro model systems for the study of host-pathogen interaction at the individual level are lacking. Here, we describe the establishment of nasopharyngeal and bronchial organoids from healthy individuals and COPD that recapitulate disease at the individual level. In contrast to healthy organoids, goblet cell hyperplasia and reduced ciliary beat frequency were observed in COPD organoids, hallmark features of the disease. Single-cell transcriptomics uncovered evidence for altered cellular differentiation trajectories in COPD organoids. SARS-CoV-2 infection of COPD organoids revealed more productive replication in bronchi, the key site of infection in severe COVID-19. Viral and bacterial exposure of organoids induced greater pro-inflammatory responses in COPD organoids. In summary, we present an organoid model that recapitulates the in vivo physiological lung microenvironment at the individual level and is amenable to the study of host-pathogen interaction and emerging infectious disease.
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25
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Rosenwasser Y, Berger I, Loewy ZG. Therapeutic Approaches for Chronic Obstructive Pulmonary Disease (COPD) Exacerbations. Pathogens 2022; 11:1513. [PMID: 36558847 PMCID: PMC9784349 DOI: 10.3390/pathogens11121513] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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
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26
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Lee I, Moon J, Lee H, Koh S, Kim GM, Gauthé L, Stellacci F, Huh YS, Kim P, Lee DC. Photodynamic treatment of multidrug-resistant bacterial infection using indium phosphide quantum dots. Biomater Sci 2022; 10:7149-7161. [PMID: 36367125 DOI: 10.1039/d2bm01393b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Infections caused by multidrug-resistant (MDR) bacteria pose an impending threat to humanity, as the evolution of MDR bacteria outpaces the development of effective antibiotics. In this work, we use indium phosphide (InP) quantum dots (QDs) to treat infections caused by MDR bacteria via photodynamic therapy (PDT), which shows superior bactericidal efficiency over common antibiotics. PDT in the presence of InP QDs results in high-efficiency bactericidal activity towards various bacterial species, including Staphylococcus aureus, Bacillus cereus, Escherichia coli and Pseudomonas aeruginosa. Upon light absorption, InP QDs generate superoxide (O2˙-), which leads to efficient and selective killing of MDR bacteria while mammalian cells remain intact. The cytotoxicity evaluation reveals that InP QDs are bio- and blood-compatible in a wide therapeutic window. For the in vivo study, we drop a solution of InP QDs at a concentration within the therapeutic window onto MDR S. aureus-infected skin wounds of mice and perform PDT for 15 min. InP QDs show excellent therapeutic and prophylactic efficacy in treating MDR bacterial infection. These findings show that InP QDs have great potential to serve as antibacterial agents for MDR bacterial infection treatment, as an effective and complementary alternative to conventional antibiotics.
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Affiliation(s)
- Ilsong Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea. .,KAIST Institute for the Nanocentury (KINC), KAIST, Daejeon 34141, Korea.,Energy & Environmental Research Center (EERC), KAIST, Daejeon 34141, Korea
| | - Jieun Moon
- Graduate School of Nanoscience and Technology, KAIST, Daejeon 34141, Korea. .,KI for Health Science and Technology (KIHST), KAIST, Daejeon 34141, Korea
| | - Hoomin Lee
- NanoBio High-Tech Materials Research Center, Department of Biological Engineering, Inha University, Incheon 22212, Korea.
| | - Sungjun Koh
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea. .,KAIST Institute for the Nanocentury (KINC), KAIST, Daejeon 34141, Korea.,Energy & Environmental Research Center (EERC), KAIST, Daejeon 34141, Korea
| | - Gui-Min Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea. .,KAIST Institute for the Nanocentury (KINC), KAIST, Daejeon 34141, Korea.,Energy & Environmental Research Center (EERC), KAIST, Daejeon 34141, Korea
| | - Laure Gauthé
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea. .,KAIST Institute for the Nanocentury (KINC), KAIST, Daejeon 34141, Korea.,Energy & Environmental Research Center (EERC), KAIST, Daejeon 34141, Korea
| | - Francesco Stellacci
- Institute of Materials Science & Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Yun Suk Huh
- NanoBio High-Tech Materials Research Center, Department of Biological Engineering, Inha University, Incheon 22212, Korea.
| | - Pilhan Kim
- Graduate School of Nanoscience and Technology, KAIST, Daejeon 34141, Korea. .,KI for Health Science and Technology (KIHST), KAIST, Daejeon 34141, Korea.,Graduate School of Medical Science and Engineering, KAIST, Daejeon 34141, Korea
| | - Doh C Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea. .,KAIST Institute for the Nanocentury (KINC), KAIST, Daejeon 34141, Korea.,Energy & Environmental Research Center (EERC), KAIST, Daejeon 34141, Korea
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27
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Kaleem Ullah M, Malamardi S, Siddaiah JB, A T, Prashant A, Vishwanath P, Riley LW, Madhivanan P, Mahesh PA. Trends in the Bacterial Prevalence and Antibiotic Resistance Patterns in the Acute Exacerbation of Chronic Obstructive Pulmonary Disease in Hospitalized Patients in South India. Antibiotics (Basel) 2022; 11:1577. [PMID: 36358232 PMCID: PMC9686600 DOI: 10.3390/antibiotics11111577] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/02/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022] Open
Abstract
Exacerbation due to antimicrobial-drug-resistant bacteria among chronic obstructive pulmonary disease (AECOPD) patients contributes to mortality and morbidity. We examined the prevalence of the bacterial organisms and trends in drug resistance in AECOPD. In this retrospective study, between January 2016 to December 2020, among 3027 AECOPD patients, 432 (14.3%) had bacteria isolated. The regression and generalized estimating equations (GEE) were used for trends in the resistance patterns over five years, adjusting for age, gender, and comorbidities. Klebsiella pneumoniae (32.4%), Pseudomonas aeruginosa (17.8%), Acinetobacter baumannii (14.4%), Escherichia coli (10.4%), and Staphylococcus aureus (2.5%) were common. We observed high levels of drug resistance in AECOPD patients admitted to ICU (87.8%) and non-ICU (86.5%). A Cox proportional hazard analysis, observed infection with Acinetobacter baumannii and female sex as independent predictors of mortality. Acinetobacter baumannii had 2.64 (95% confidence interval (CI): 1.08−6.43) higher odds of death, compared to Klebsiella pneumoniae. Females had 2.89 (95% CI: 1.47−5.70) higher odds of death, compared to males. A high proportion of bacterial AECOPD was due to drug-resistant bacteria. An increasing trend in drug resistance was observed among females.
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Affiliation(s)
- Mohammed Kaleem Ullah
- Centre for Excellence in Molecular Biology and Regenerative Medicine, Department of Biochemistry, JSS Medical College, JSS Academy of Higher Education & Research, Mysore 570015, Karnataka, India
- Division of Infectious Disease and Vaccinology, School of Public Health, University of California, Berkeley, CA 94720, USA
| | - Sowmya Malamardi
- Department of Respiratory Medicine, JSS Medical College, JSS Academy of Higher Education & Research, Mysuru 570015, Karnataka, India
- School of Psychology & Public Health, College of Science Health and Engineering, La Trobe University, Melbourne 3086, Australia
| | - Jayaraj Biligere Siddaiah
- Department of Respiratory Medicine, JSS Medical College, JSS Academy of Higher Education & Research, Mysuru 570015, Karnataka, India
| | - Tejashree A
- Department of Microbiology, JSS Medical College, JSS Academy of Higher Education & Research, Mysuru 570015, Karnataka, India
| | - Akila Prashant
- Centre for Excellence in Molecular Biology and Regenerative Medicine, Department of Biochemistry, JSS Medical College, JSS Academy of Higher Education & Research, Mysore 570015, Karnataka, India
| | - Prashant Vishwanath
- Centre for Excellence in Molecular Biology and Regenerative Medicine, Department of Biochemistry, JSS Medical College, JSS Academy of Higher Education & Research, Mysore 570015, Karnataka, India
| | - Lee W. Riley
- Division of Infectious Disease and Vaccinology, School of Public Health, University of California, Berkeley, CA 94720, USA
| | - Purnima Madhivanan
- Department of Health Promotion Sciences, Mel & Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ 85724, USA
- Division of Infectious Diseases, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
- Public Health Research Institute of India, Mysuru 570020, Karnataka, India
| | - Padukudru Anand Mahesh
- Department of Respiratory Medicine, JSS Medical College, JSS Academy of Higher Education & Research, Mysuru 570015, Karnataka, India
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28
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Yu HT, Zhang JQ, Sun MC, Chen H, Shi XM, You FP, Qiao SY. Polymeric Nanohybrids Engineered by Chitosan Nanoparticles and Antimicrobial Peptides as Novel Antimicrobials in Food Biopreservatives: Risk Assessment and Anti-Foodborne Pathogen Escherichia coli O157:H7 Infection by Immune Regulation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:12535-12549. [PMID: 36153996 DOI: 10.1021/acs.jafc.2c05308] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Polymeric nanomaterials (APs) are gaining attention as promising clinical antimicrobials with rapidly increasing antibiotic resistance. Infections by zoonotic enterohemorrhagic Escherichia coli are a severe global threat to public health. Chitosan nanoparticles-microcin J25 (CNM), a class of APs engineered by bioactive peptides and chitosan nanoparticles, can be used as a novel antimicrobial agent against bacterial infections. However, the risk assessment of CNM on animal health or its potential immune modulation to treat serotype E. coli O157:H7 infection impacts in vivo are not well understood. Herein, our findings in mouse models uncovered that oral administration of low levels of CNM significantly increased the body weight and made beneficial effects on the lifespan or clinical signs, accompanied by a significant improvement in gut health, including enhancing the intestinal barrier, immune modulation, and changes in gut microbiota compositions or metabolites. However, high concentrations of CNM induced serious adverse effects, negatively improving intestinal health targets. Anti-infective results proved that oral 0.1% CNM enhances host defense against E. coli O157:H7 infection by improving immune functions and modulating the Th1/Th2 balance. In summary, these findings uncover an instrumental link between the dosage and toxicity risk, suggesting that APs need to be comprehensively assessed for risk before application as safe and reliable food preservatives or therapeutic agents. In addition, CNM as a promising AP may markedly enhance host immunity and therapeutic effects by oral administration.
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Affiliation(s)
- Hai-Tao Yu
- Institute of Systems Biomedicine, Department of Immunology, School of Basic Medical Sciences, Beijing Key Laboratory of Tumor Systems Biology, Peking University Health Science Center, Beijing 100191, P. R. China
| | - Jia-Qi Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Ming-Chao Sun
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Han Chen
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Xiu-Mei Shi
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Fu-Ping You
- Institute of Systems Biomedicine, Department of Immunology, School of Basic Medical Sciences, Beijing Key Laboratory of Tumor Systems Biology, Peking University Health Science Center, Beijing 100191, P. R. China
| | - Shi-Yan Qiao
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry Center, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P. R. China
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Morasert T, Kriengwattanakul O, Kulalert P. Effect of Macrolide Antibiotics on In-Hospital Mortality Among Acute Exacerbation of COPD Patients: A Propensity Score-Matched Analysis. Int J Chron Obstruct Pulmon Dis 2022; 17:2229-2239. [PMID: 36124296 PMCID: PMC9482436 DOI: 10.2147/copd.s373595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 08/28/2022] [Indexed: 11/23/2022] Open
Abstract
Objective This study aimed to assess whether the short-term use of macrolide antibiotics during hospitalization can reduce in-hospital all-cause mortality compared to non-macrolide treatment in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Methods A propensity score (PS) matching analysis was performed using retrospective data from the admission records of AECOPD patients in the medical general ward and medical intensive care unit of a tertiary care center between October 2015 and September 2018. The multivariable Cox proportional hazard model was performed to eliminate residual confounding after the PS analysis. Results The mortality rate was 11.1% of 1528 admissions in the PS matching cohort. Approximately 70% of patients had respiratory failure requiring intubation on initial admission, and 34% had pneumonia. Macrolide treatment significantly reduced in-hospital mortality among AECOPD patients (adjusted hazard ratio, 0.55; 95% confidence interval 0.32–0.96; P=0.034). Clarithromycin was the most commonly prescribed macrolide (80%). Conclusion Macrolide antibiotics reduced in-hospital mortality in hospitalized AECOPD patients. The combination of antimicrobial and immunomodulatory effects of macrolide treatment could play an essential role.
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Affiliation(s)
- Thotsaporn Morasert
- Pulmonary and Critical Care Medicine, Department of Internal Medicine, Suratthani Hospital, Surat Thani, 84000, Thailand
| | | | - Prapasri Kulalert
- Department of Clinical Epidemiology, Faculty of Medicine, Thammasat University, Pathum Thani, Thailand
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30
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Pulmonary Delivery of Emerging Antibacterials for Bacterial Lung Infections Treatment. Pharm Res 2022; 40:1057-1072. [PMID: 36123511 PMCID: PMC9484715 DOI: 10.1007/s11095-022-03379-8] [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: 07/05/2022] [Accepted: 08/20/2022] [Indexed: 11/08/2022]
Abstract
Bacterial infections in the respiratory tract are considered as one of the major challenges to the public health worldwide. Pulmonary delivery is an attractive approach in the management of bacterial respiratory infections with a few inhaled antibiotics approved. However, with the rapid emergence of antibiotic-resistant bacteria, it is necessary to develop new/alternative inhaled antibacterial agents in the post-antibiotic era. A pipeline of novel biological antibacterial agents, including antimicrobial peptides, RNAi therapeutics, and bacteriophages, has emerged to combat bacterial infections with excellent performance. In this review, the causal effects of bacterial infections on the related pulmonary infectious diseases will be firstly introduced. This is followed by an overview on the development of emerging antibacterial therapeutics for managing lung bacterial infections through nebulization/inhalation of dried powders. The obstacles and underlying proposals regarding their clinical transformation are also discussed to seek insights for further development. Research on inhaled therapy of these emerging antibacterials are still in the infancy, but the promising progress warrants further attention.
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31
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Baumgartner MA, Li C, Kuntz TM, Nurhussien L, Synn AJ, Sun WY, Kang JE, Lai PS, Wilkinson JE, Rice MB. Differences of the Nasal Microbiome and Mycobiome by Clinical Characteristics of COPD Patients. CHRONIC OBSTRUCTIVE PULMONARY DISEASES (MIAMI, FLA.) 2022; 9:309-324. [PMID: 35487694 PMCID: PMC9448003 DOI: 10.15326/jcopdf.2021.0267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/21/2022] [Indexed: 06/14/2023]
Abstract
RATIONALE While studies suggest that the lung microbiome may influence risk of chronic obstructive pulmonary disease (COPD) exacerbations, little is known about the relationship between the nasal biome and clinical characteristics of COPD patients. METHODS We sampled the nasal lining fluid by nasosorption of both nares of 20 people with moderate-to-severe COPD. All 40 samples, plus 4 negative controls, underwent DNA extraction, and 16SV4 ribosomal RNA (rRNA) (bacterial) and ribosomal internal transcribed spacer 2 (ITS2) (fungal) sequencing. We measured the proportion of variance (R2) in beta diversity explained by clinical factors, including age, sex, body mass index (BMI), COPD treatment, disease severity (forced expiratory volume in 1 second [FEV1], symptom/exacerbation frequency), peripheral eosinophil level (≥150 versus <150 cells/µL) and season of sampling, with the PERMANOVA test on the Bray-Curtis dissimilarities, accounting for within-person correlation of samples. We assessed the relative abundance of microbial features in the nasal community and their associations with clinical characteristics using the Microbiome Multivariable Association with Linear Models (MaAsLin2) package. RESULTS The most abundant nasal fluid bacterial taxa were Corynebacterium, Staphylococcus, Streptococcus, Moraxella, and Dolosigranulum, and fungal taxa were Malassezia, Candida, Malasseziales, Cladosporium and Aspergillus. Bacterial microbiome composition was associated with short-acting muscarinic antagonist use (R2 11.8%, p=0.002), sex (R2 8.3%, p=0.044), nasal steroid use (R2 7.7%, p=0.064), and higher eosinophil level (R2 7.6%, p=0.084). Mycobiome composition was associated with higher eosinophil level (R2 14.4%, p=0.004) and low FEV1 (R2 7.5%, p=0.071). No specific bacterium or fungus differed significantly in relative abundance by clinical characteristics in the multivariate per-feature analysis. CONCLUSION The taxonomical composition of the nasal biome is heterogeneous in COPD patients and may be explained in part by clinical characteristics.
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Affiliation(s)
| | - Chengchen Li
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, United States
| | - Thomas M. Kuntz
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, United States
| | - Lina Nurhussien
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States
| | - Andrew J. Synn
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States
| | - Wendy Y. Sun
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States
| | - Jennifer E. Kang
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States
| | - Peggy S. Lai
- Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States
| | - Jeremy E. Wilkinson
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, United States
| | - Mary B. Rice
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States
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Nakahashi-Ouchida R, Mori H, Yuki Y, Umemoto S, Hirano T, Uchida Y, Machita T, Yamanoue T, Sawada SI, Suzuki M, Fujihashi K, Akiyoshi K, Kurono Y, Kiyono H. Induction of Mucosal IgA-Mediated Protective Immunity Against Nontypeable Haemophilus influenzae Infection by a Cationic Nanogel-Based P6 Nasal Vaccine. Front Immunol 2022; 13:819859. [PMID: 35874779 PMCID: PMC9299436 DOI: 10.3389/fimmu.2022.819859] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 05/31/2022] [Indexed: 11/20/2022] Open
Abstract
Nontypeable Haemophilus influenzae (NTHi) strains form a major group of pathogenic bacteria that colonizes the nasopharynx and causes otitis media in young children. At present, there is no licensed vaccine for NTHi. Because NTHi colonizes the upper respiratory tract and forms biofilms that cause subsequent infectious events, a nasal vaccine that induces NTHi-specific secretory IgA capable of preventing biofilm formation in the respiratory tract is desirable. Here, we developed a cationic cholesteryl pullulan-based (cCHP nanogel) nasal vaccine containing the NTHi surface antigen P6 (cCHP-P6) as a universal vaccine antigen, because P6 expression is conserved among 90% of NTHi strains. Nasal immunization of mice with cCHP-P6 effectively induced P6-specific IgA in mucosal fluids, including nasal and middle ear washes. The vaccine-induced P6-specific IgA showed direct binding to the NTHi via the surface P6 proteins, resulting in the inhibition of NTHi biofilm formation. cCHP-P6 nasal vaccine thus protected mice from intranasal NTHi challenge by reducing NTHi colonization of nasal tissues and eventually eliminated the bacteria. In addition, the vaccine-induced IgA bound to different NTHi clinical isolates from patients with otitis media and inhibited NTHi attachment in a three-dimensional in vitro model of the human nasal epithelial surface. Therefore, the cCHP-P6 nanogel nasal vaccine induced effective protection in the airway mucosa, making it a strong vaccine candidate for preventing NTHi-induced infectious diseases, such as otitis media, sinusitis, and pneumonia.
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Affiliation(s)
- Rika Nakahashi-Ouchida
- Division of Mucosal Vaccines, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Division of Mucosal Immunology, IMSUT Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Department of Human Mucosal Vaccinology, Chiba University Hospital, Chiba, Japan
| | - Hiromi Mori
- Division of Mucosal Vaccines, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Department of Human Mucosal Vaccinology, Chiba University Hospital, Chiba, Japan
| | - Yoshikazu Yuki
- Division of Mucosal Vaccines, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Department of Human Mucosal Vaccinology, Chiba University Hospital, Chiba, Japan
- HanaVax Inc., Tokyo, Japan
| | - Shingo Umemoto
- Faculty of Medicine, Department of Otorhinolaryngology, Head and Neck Surgery, Oita University, Oita, Japan
- CU-UCSD Center for Mucosal Immunology, Allergy and Vaccines (cMAV), Division of Gastroenterology, Department of Medicine, University of California, San Diego, San Diego, CA, United States
| | - Takashi Hirano
- Faculty of Medicine, Department of Otorhinolaryngology, Head and Neck Surgery, Oita University, Oita, Japan
| | - Yohei Uchida
- Division of Mucosal Vaccines, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Department of Human Mucosal Vaccinology, Chiba University Hospital, Chiba, Japan
| | - Tomonori Machita
- Division of Mucosal Vaccines, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Department of Human Mucosal Vaccinology, Chiba University Hospital, Chiba, Japan
| | - Tomoyuki Yamanoue
- Division of Mucosal Vaccines, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Department of Human Mucosal Vaccinology, Chiba University Hospital, Chiba, Japan
| | - Shin-Ichi Sawada
- Department of Polymer Chemistry, Faculty of Engineering, Kyoto University, Kyoto, Japan
| | - Masashi Suzuki
- Faculty of Medicine, Department of Otorhinolaryngology, Head and Neck Surgery, Oita University, Oita, Japan
| | - Kohtaro Fujihashi
- Department of Human Mucosal Vaccinology, Chiba University Hospital, Chiba, Japan
- Division of Clinical Vaccinology, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Department of Pediatric Dentistry, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Kazunari Akiyoshi
- Department of Polymer Chemistry, Faculty of Engineering, Kyoto University, Kyoto, Japan
| | - Yuichi Kurono
- Department of Otolaryngology, Faculty of Medicine, Kagoshima University, Kagoshima, Japan
| | - Hiroshi Kiyono
- Division of Mucosal Immunology, IMSUT Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Department of Human Mucosal Vaccinology, Chiba University Hospital, Chiba, Japan
- HanaVax Inc., Tokyo, Japan
- CU-UCSD Center for Mucosal Immunology, Allergy and Vaccines (cMAV), Division of Gastroenterology, Department of Medicine, University of California, San Diego, San Diego, CA, United States
- Future Medicine Education and Research Organization, Mucosal Immunology and Allergy Therapeutics, Institute for Global Prominent Research, Chiba University, Chiba, Japan
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Kaza N, Lin VY, Stanford D, Hussain SS, Falk Libby E, Kim H, Borgonovi M, Conrath K, Mutyam V, Byzek SA, Tang LP, Trombley JE, Rasmussen L, Schoeb T, Leung HM, Tearney GJ, Raju SV, Rowe SM. Evaluation of a novel CFTR potentiator in COPD ferrets with acquired CFTR dysfunction. Eur Respir J 2022; 60:13993003.01581-2021. [PMID: 34916262 PMCID: PMC10079430 DOI: 10.1183/13993003.01581-2021] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 11/21/2021] [Indexed: 11/05/2022]
Abstract
RATIONALE The majority of chronic obstructive pulmonary disease (COPD) patients have chronic bronchitis, for which specific therapies are unavailable. Acquired cystic fibrosis transmembrane conductance regulator (CFTR) dysfunction is observed in chronic bronchitis, but has not been proven in a controlled animal model with airway disease. Furthermore, the potential of CFTR as a therapeutic target has not been tested in vivo, given limitations to rodent models of COPD. Ferrets exhibit cystic fibrosis-related lung pathology when CFTR is absent and COPD with bronchitis following cigarette smoke exposure. OBJECTIVES To evaluate CFTR dysfunction induced by smoking and test its pharmacological reversal by a novel CFTR potentiator, GLPG2196, in a ferret model of COPD with chronic bronchitis. METHODS Ferrets were exposed for 6 months to cigarette smoke to induce COPD and chronic bronchitis and then treated with enteral GLPG2196 once daily for 1 month. Electrophysiological measurements of ion transport and CFTR function, assessment of mucociliary function by one-micron optical coherence tomography imaging and particle-tracking microrheology, microcomputed tomography imaging, histopathological analysis and quantification of CFTR protein and mRNA expression were used to evaluate mechanistic and pathophysiological changes. MEASUREMENTS AND MAIN RESULTS Following cigarette smoke exposure, ferrets exhibited CFTR dysfunction, increased mucus viscosity, delayed mucociliary clearance, airway wall thickening and airway epithelial hypertrophy. In COPD ferrets, GLPG2196 treatment reversed CFTR dysfunction, increased mucus transport by decreasing mucus viscosity, and reduced bronchial wall thickening and airway epithelial hypertrophy. CONCLUSIONS The pharmacologic reversal of acquired CFTR dysfunction is beneficial against pathological features of chronic bronchitis in a COPD ferret model.
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Affiliation(s)
- Niroop Kaza
- Dept of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA.,Equal contributions
| | - Vivian Y Lin
- Dept of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA.,Equal contributions
| | - Denise Stanford
- Dept of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA.,Equal contributions
| | - Shah S Hussain
- Dept of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Emily Falk Libby
- The Gregory Fleming James Cystic Fibrosis Research Center, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Harrison Kim
- Dept of Radiology, The University of Alabama at Birmingham, Birmingham, AL, USA
| | | | | | - Venkateshwar Mutyam
- Dept of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Stephen A Byzek
- Dept of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Li Ping Tang
- Dept of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - John E Trombley
- Dept of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Lawrence Rasmussen
- Dept of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Trenton Schoeb
- Dept of Genetics, The University of Alabama at Birmingham, Birmingham, AL, USA.,Animal Resources Program, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Hui Min Leung
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Guillermo J Tearney
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA.,Dept of Pathology, Massachusetts General Hospital, Boston, MA, USA
| | - S Vamsee Raju
- Dept of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA.,The Gregory Fleming James Cystic Fibrosis Research Center, The University of Alabama at Birmingham, Birmingham, AL, USA.,Dept of Cell, Developmental, and Integrative Biology, The University of Alabama at Birmingham, Birmingham, AL, USA.,Co-senior authors
| | - Steven M Rowe
- Dept of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA .,The Gregory Fleming James Cystic Fibrosis Research Center, The University of Alabama at Birmingham, Birmingham, AL, USA.,Dept of Cell, Developmental, and Integrative Biology, The University of Alabama at Birmingham, Birmingham, AL, USA.,Co-senior authors
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Use of Inhaled Corticosteroids and Risk of Acquiring Haemophilus influenzae in Patients with Chronic Obstructive Pulmonary Disease. J Clin Med 2022; 11:jcm11123539. [PMID: 35743610 PMCID: PMC9225538 DOI: 10.3390/jcm11123539] [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: 05/27/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 12/04/2022] Open
Abstract
Background: Inhaled corticosteroids (ICS) are widely used in chronic obstructive pulmonary disease (COPD), despite the known risk of severe adverse effects including pulmonary infections. Research Question: Our study investigates the risk of acquiring a positive Haemophilus influenzae airway culture with use of ICS in outpatients with COPD. Study Design and Methods: We conducted an epidemiological cohort study using data from 1 January 2010 to 19 February 2018, including 21,218 outpatients with COPD in Denmark. ICS use 365 days prior to cohort entry was categorised into low, moderate, and high, based on cumulated ICS dose extracted from a national registry on reimbursed prescriptions. A Cox proportional hazards regression model was used to assess the future risk of acquiring H. Influenzae within 365 days from cohort entry, and sensitivity analyses were performed using propensity score matched models. Results: In total, 801 (3.8%) patients acquired H. Influenzae during follow-up. Use of ICS was associated with a dose-dependent increased risk of acquiring H. Influenzae with hazard ratio (HR) 1.2 (95% confidence interval (CI) 0.9−1.5, p value = 0.1) for low-dose ICS; HR 1.7 (95% CI 1.3−2.1, p value < 0.0001) for moderate dose; and HR 1.9 (95% CI 1.5−2.4, p value < 0.0001) for high-dose ICS compared to no ICS use. Results were confirmed in the propensity-matched model using the same categories. Conclusions: ICS use in outpatients with COPD was associated with a dose-dependent increase in risk of isolating H. Influenzae. This observation supports that high dose ICS should be used with caution.
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Ran B, Ran L, Hou J, Peng X. Incorporating Boron into Niobic Acid Nanosheets Enables Generation of Multiple Reactive Oxygen Species for Superior Antibacterial Action. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107333. [PMID: 35324069 DOI: 10.1002/smll.202107333] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 02/25/2022] [Indexed: 06/14/2023]
Abstract
Photocatalytic therapy is an alternative antibacterial pathway but most photocatalysts are limited by light absorption, charge transfer and insufficient production of reactive oxygen species (ROS). Herein, the authors utilize boron doped niobic acid nanosheets (B-HNbO3 NSs) as a superior photocatalytic antibacterial platform. The experimental results and density functional theory (DFT) confirm that superior photocatalytic therapy activity is mainly due to boron doping, which not only promotes the generation and separation of electrons and holes, but also enhances the adsorption of water and oxygen molecules on B-HNbO3 NSs. Consequently, multiple ROS including hydroxyl radicals (•OH), superoxide radicals (•O2- ), and singlet oxygen (1 O2 ) are generated under light irradiation, resulting in outstanding bacterial killing ability of B-HNbO3 NSs. Besides, oxygen is produced during the therapy process, thus alleviating the inflammatory response caused by hypoxia. Furthermore, molecular dynamics (MD) simulations verify that the nanosheet structure makes it possess strong electrostatic attraction for bacterial cell membranes, leading to physical insertion and damage to bacterial cells. Therefore, bactericidal rates for four types of bacteria are all more than 99%, proving its excellent and broad-spectrum antibacterial capacity. Moreover, B-HNbO3 NSs could be applied to treat biofilm-coated medical devices in vivo, suggesting its possibility in practical application.
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Affiliation(s)
- Bei Ran
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China
| | - Lei Ran
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China
| | - Jungang Hou
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China
- State Key Laboratory of Fine Chemicals, Shenzhen Reasearch Institute, Dalian University of Technology, Shenzhen, 518057, P. R. China
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Yu H, Shang L, Yang G, Dai Z, Zeng X, Qiao S. Biosynthetic Microcin J25 Exerts Strong Antibacterial, Anti-Inflammatory Activities, Low Cytotoxicity Without Increasing Drug-Resistance to Bacteria Target. Front Immunol 2022; 13:811378. [PMID: 35250983 PMCID: PMC8894198 DOI: 10.3389/fimmu.2022.811378] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 01/27/2022] [Indexed: 12/15/2022] Open
Abstract
Multidrug resistant (MDR) bacterial infection has emerged, raising concerns about untreatable infections, and posing the highest health risks. Antimicrobial peptides (AMPs) are thought to be the best remedy for this problem. Here, we showed biosynthetic microcin J25 (MccJ25) exhibited excellent bactericidal activity against standard and clinically relevant veterinary MDR strains with high stability, no cytotoxicity, and no increase in drug resistance. Analysis of antimicrobial mechanism possessed by sensitive enterotoxigenic Escherichia coli (ETEC) based on electron microscopy and Sytox Green methods was carried out. Results showed excellent activity against ETEC was due to permeabilizing bacterial membranes and strong affinity. MccJ25 exhibited high endotoxin-neutralizing activity in both in vivo and in vitro environments, and mice exposed to lipopolysaccharide (LPS) showed decreased plasma LPS levels and improved survival after administration of MccJ25. In an LPS-treated mouse septicemia model, MccJ25 treatment significantly alleviated inflammatory responses by inhibiting proinflammatory factor secretion and expression. In a mouse E. coli infection model, administration of MccJ25 effectively improved host defense against clinically source cocktail of multidrug-resistant E. coli strains induced intestinal inflammation and bacteria dissemination. Results of studies on anti-inflammatory mechanisms showed that MccJ25 downregulated nuclear factor kappa B kinase and mitogen-activated protein kinase, thereby reducing the production of toll-like receptor 4, myeloid differentiation factor 88 and decreasing the key proinflammatory cytokines. These findings clarify MccJ25 may be an ideal antibacterial/antiendotoxic drug candidate that has the potential to further guide the development of anti-inflammatory and/or antimicrobial agents in the war against MDR bacterial infection.
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Affiliation(s)
- Haitao Yu
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry Center, China Agricultural University, Beijing, China
- Department of Immunology, Beijing Key Laboratory of Tumor Systems Biology, Institute of Systems Biomedicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Lijun Shang
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry Center, China Agricultural University, Beijing, China
- Beijing Key Laboratory of Biofeed Additives, China Agricultural University, Beijing, China
| | - Guangxin Yang
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry Center, China Agricultural University, Beijing, China
- Beijing Key Laboratory of Biofeed Additives, China Agricultural University, Beijing, China
| | - Ziqi Dai
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry Center, China Agricultural University, Beijing, China
- Beijing Key Laboratory of Biofeed Additives, China Agricultural University, Beijing, China
| | - Xiangfang Zeng
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry Center, China Agricultural University, Beijing, China
- Beijing Key Laboratory of Biofeed Additives, China Agricultural University, Beijing, China
| | - Shiyan Qiao
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry Center, China Agricultural University, Beijing, China
- Beijing Key Laboratory of Biofeed Additives, China Agricultural University, Beijing, China
- *Correspondence: Shiyan Qiao,
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Current opinion on the role of vitamin D supplementation in respiratory infections and asthma/COPD exacerbations: A need to establish publication guidelines for overcoming the unpublished data. Clin Nutr 2022; 41:755-777. [DOI: 10.1016/j.clnu.2022.01.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/29/2021] [Accepted: 01/29/2022] [Indexed: 11/19/2022]
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Smith D, Gill A, Hall L, Turner AM. Prevalence, Pattern, Risks Factors and Consequences of Antibiotic Resistance in COPD: A Systematic Review. COPD 2022; 18:672-682. [PMID: 35016569 DOI: 10.1080/15412555.2021.2000957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
A concern of antibiotic use in chronic obstructive pulmonary disease (COPD) is the emergence and propagation of antimicrobial resistance (AMR). A systematic review was conducted to determine prevalence, pattern, risk factors and consequences of AMR in COPD. Bibliographic databases were searched from inception to November 2020, with no language restrictions, including studies of any design that included patients with COPD and reported prevalence and pattern of AMR. 2748 unique titles and abstracts were identified, of which 63 articles, comprising 26,387 patients, met inclusion criteria. Forty-four (69.8%) studies were performed during acute exacerbation. The median prevalence of AMR ranged from 0-100% for Pseudomonas aeruginosa, Moraxella catarrhalis, Klebsiella pneumoniae and Acinetobacter baumannii. Median resistance rates of H influenzae and S pneumoniae were lower by comparison, with maximum rates ≤40% and ≤46%, respectively, and higher for Staphylococcus aureus. There was a trend towards higher rates of AMR in patients with poorer lung function and greater incidence of previous antibiotic exposure and hospitalisation. The impact of AMR on mortality was unclear. Data regarding antimicrobial susceptibility testing techniques and the impact of other risk factors or consequences of AMR were variable or not reported. This is the first review to systematically unify data regarding AMR in COPD. AMR is relatively common and strategies to optimise antibiotic use could be valuable to prevent the currently under-investigated potential adverse consequences of AMR.Supplemental data for this article is available online at https://doi.org/10.1080/15412555.2021.2000957 .
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Affiliation(s)
- Daniel Smith
- Medical School, University of Birmingham, United Kingdom
| | - Arran Gill
- Medical School, University of Southampton, United Kingdom
| | - Lewis Hall
- Medical School, University of Birmingham, United Kingdom
| | - Alice M Turner
- Heartlands Hospital, University Hospitals Birmingham, Birmingham, United Kingdom.,Institute of Applied Health Research, University of Birmingham, United Kingdom
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Kuang M, Yu H, Qiao S, Huang T, Zhang J, Sun M, Shi X, Chen H. A Novel Nano-Antimicrobial Polymer Engineered with Chitosan Nanoparticles and Bioactive Peptides as Promising Food Biopreservative Effective against Foodborne Pathogen E. coli O157-Caused Epithelial Barrier Dysfunction and Inflammatory Responses. Int J Mol Sci 2021; 22:ijms222413580. [PMID: 34948377 PMCID: PMC8706205 DOI: 10.3390/ijms222413580] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/15/2021] [Accepted: 12/15/2021] [Indexed: 12/19/2022] Open
Abstract
For food quality and safety issues, the emergence of foodborne pathogenic bacteria has further accelerated the spread of antibiotic residues and drug resistance genes. To alleviate the harm caused by bacterial infections, it is necessary to seek novel antimicrobial agents as biopreservatives to prevent microbial spoilage. Nanoantimicrobials have been widely used in the direct treatment of bacterial infections. CNMs, formed by chitosan nanoparticles and peptides, are promising antibiotic alternatives for use as excellent new antibacterial drugs against pathogenic bacteria. Herein, the current study evaluated the function of CNMs in the protection of foodborne pathogen Escherichia coli (E. coli) O157 infection using an intestinal epithelial cell model. Antibacterial activity assays indicated that CNMs exerted excellent bactericidal activity against E. coli O157. Assessment of the cytotoxicity risks toward cells demonstrated that 0.0125–0.02% of CNMs did not cause toxicity, but 0.4% of CNMs caused cytotoxicity. Additionally, CNMs did not induced genotoxicity either. CNMs protected against E. coli O157-induced barrier dysfunction by increasing transepithelial electrical resistance, decreasing lactate dehydrogenase and promoting the protein expression of occludin. CNMs were further found to ameliorate inflammation via modulation of tumor factor α, toll-like receptor 4 and nuclear factor κB (NF-κB) expression via inhibition of mitogen-activated protein kinase and NF-κB activation and improved antioxidant activity. Taken together, CNMs could protect the host against E. coli O157-induced intestinal barrier damage and inflammation, showing that CNMs have great advantages and potential application as novel antimicrobial polymers in the food industry as food biopreservatives, bringing new hope for the treatment of bacterial infections.
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Affiliation(s)
- Ming Kuang
- Institute of Systems Biomedicine, Department of Immunology, School of Basic Medical Sciences, Beijing Key Laboratory of Tumor Systems Biology, Peking University Health Science Center, Beijing 100191, China;
| | - Haitao Yu
- Institute of Systems Biomedicine, Department of Immunology, School of Basic Medical Sciences, Beijing Key Laboratory of Tumor Systems Biology, Peking University Health Science Center, Beijing 100191, China;
- Correspondence:
| | - Shiyan Qiao
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry Center, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
| | - Tao Huang
- Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, China;
| | - Jiaqi Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.Z.); (M.S.); (X.S.); (H.C.)
| | - Mingchao Sun
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.Z.); (M.S.); (X.S.); (H.C.)
| | - Xiumei Shi
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.Z.); (M.S.); (X.S.); (H.C.)
| | - Han Chen
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.Z.); (M.S.); (X.S.); (H.C.)
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Pragman AA, Fieberg AM, Reilly CS, Wendt C. Chlorhexidine oral rinses for symptomatic COPD: a randomised, blind, placebo-controlled preliminary study. BMJ Open 2021; 11:e050271. [PMID: 34903538 PMCID: PMC8672026 DOI: 10.1136/bmjopen-2021-050271] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 10/29/2021] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVES Determine the effect of twice-daily chlorhexidine oral rinses on oral and lung microbiota biomass and respiratory symptoms. SETTING Single centre. PARTICIPANTS Participants were aged 40-85 with chronic obstructive pulmonary disease (COPD) and chronic productive cough or COPD exacerbation within the last year. Exclusions included antibiotics in the previous 2 months and/or those with less than four teeth. Forty-four participants were recruited and 40 completed the study. INTERVENTION Participants were randomised 1:1 to twice-daily 0.12% chlorhexidine oral rinses versus placebo for 2 months along with daily diaries. St. George's Respiratory Questionnaire (SGRQ), blood tests, oral rinse and induced sputum were collected at randomisation and the final visit. PRIMARY AND SECONDARY OUTCOMES Primary outcome was a change in oral and sputum microbiota biomass. Secondary outcomes included: sputum and oral microbiota Shannon and Simpson diversity and taxonomy; inflammatory markers; Breathlessness, Cough and Sputum Scale and SGRQ scores. RESULTS Neither the oral microbiota nor the sputum microbiota biomass decreased significantly in those using chlorhexidine compared with placebo (oral microbiota mean log10 difference (SE)=-0.103 (0.23), 95% CI -0.59 to 0.38, p=0.665; sputum microbiota 0.80 (0.46), 95% CI -0.15 to 1.75, p=0.096). Chlorhexidine decreased both oral and sputum microbiota alpha (Shannon) diversity (linear regression estimate (SE) oral: -0.349 (0.091), p=0.001; sputum -0.622 (0.169), p=0.001). Chlorhexidine use did not decrease systemic inflammatory markers compared with placebo (C reactive protein (chlorhexidine 1.8±7.5 vs placebo 0.4±6.8, p=0.467), fibrinogen (22.5±77.8 vs 10.0±77.0, p=0.406) or leucocytes (0.2±1.8 vs 0.5±1.8, p=0.560)). Chlorhexidine use decreased SGRQ scores compared with placebo (chlorhexidine -4.7±8.0 vs placebo 1.7±8.9, p=0.032). CONCLUSIONS We did not detect a significant difference in microbiota biomass due to chlorhexidine use. Chlorhexidine decreased oral and sputum microbiota alpha diversity and improved respiratory health-related quality of life compared with placebo. TRIAL REGISTRATION NCT02252588.
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Affiliation(s)
- Alexa A Pragman
- Department of Medicine, Minneapolis VA Health Care System, Minneapolis, Minnesota, USA
- Department of Medicine, University of Minnesota Medical School, Minneapolis, Minnesota, USA
| | - Ann M Fieberg
- Coordinating Center for Biometric Research, University of Minnesota, Minneapolis, Minnesota, USA
| | - Cavan S Reilly
- Division of Biostatistics, University of Minnesota, Minneapolis, Minnesota, USA
| | - Christine Wendt
- Department of Medicine, Minneapolis VA Health Care System, Minneapolis, Minnesota, USA
- Department of Medicine, University of Minnesota Medical School, Minneapolis, Minnesota, USA
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Birru RL, Bein K, Bondarchuk N, Wells H, Lin Q, Di YP, Leikauf GD. Antimicrobial and Anti-Inflammatory Activity of Apple Polyphenol Phloretin on Respiratory Pathogens Associated With Chronic Obstructive Pulmonary Disease. Front Cell Infect Microbiol 2021; 11:652944. [PMID: 34881190 PMCID: PMC8645934 DOI: 10.3389/fcimb.2021.652944] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 10/11/2021] [Indexed: 11/13/2022] Open
Abstract
Bacterial infections contribute to accelerated progression and severity of chronic obstructive pulmonary disease (COPD). Apples have been associated with reduced symptoms of COPD and disease development due to their polyphenolic content. We examined if phloretin, an apple polyphenol, could inhibit bacterial growth and inflammation induced by the main pathogens associated with COPD. Phloretin displayed bacteriostatic and anti-biofilm activity against nontypeable Haemophilus influenzae (NTHi), Moraxella catarrhalis, Streptococcus pneumoniae, and to a lesser extent, Pseudomonas aeruginosa. In vitro, phloretin inhibited NTHi adherence to NCI-H292 cells, a respiratory epithelial cell line. Phloretin also exhibited anti-inflammatory activity in COPD pathogen-induced RAW 264.7 macrophages and human bronchial epithelial cells derived from normal and COPD diseased lungs. In mice, NTHi bacterial load and chemokine (C-X-C motif) ligand 1 (CXCL1), a neutrophil chemoattractant, was attenuated by a diet supplemented with phloretin. Our data suggests that phloretin is a promising antimicrobial and anti-inflammatory nutraceutical for reducing bacterial-induced injury in COPD.
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Affiliation(s)
- Rahel L Birru
- Department of Environmental and Occupational Health, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States
| | - Kiflai Bein
- Department of Environmental and Occupational Health, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States
| | - Natalya Bondarchuk
- Department of Environmental and Occupational Health, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States
| | - Heather Wells
- Department of Environmental and Occupational Health, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States
| | - Qiao Lin
- Department of Environmental and Occupational Health, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States
| | - Y Peter Di
- Department of Environmental and Occupational Health, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States
| | - George D Leikauf
- Department of Environmental and Occupational Health, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States
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42
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Meng Y, Wang J, Wen K, Da W, Yang K, Zhou S, Tao Z, Liu H, Tao L. Clinical Features and Laboratory Examination to Identify Severe Patients with COVID-19: A Systematic Review and Meta-Analysis. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6671291. [PMID: 34796234 PMCID: PMC8593588 DOI: 10.1155/2021/6671291] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 10/13/2021] [Indexed: 01/08/2023]
Abstract
BACKGROUND With the COVID-19 epidemic breakout in China, up to 25% of diagnosed cases are considered to be severe. To effectively predict the progression of COVID-19 via patients' clinical features at an early stage, the prevalence of these clinical factors and their relationships with severe illness were assessed. METHODS In this study, electronic databases (PubMed, Embase, Web of Science, and Chinese database) were searched to obtain relevant studies, including information on severe patients. Publication bias analysis, sensitivity analysis, prevalence, sensitivity, specificity, likelihood ratio, diagnosis odds ratio calculation, and visualization graphics were achieved through software Review Manager 5.3, Stata 15, Meta-DiSc 1.4, and R. RESULTS Data of 3.547 patients from 24 studies were included in this study. The results revealed that patients with chronic respiratory system diseases (pooled positive likelihood 6.07, 95% CI: 3.12-11.82), chronic renal disease (4.79, 2.04-11.25), cardiovascular disease (3.45, 2.19-5.44), and symptoms of the onset of chest tightness (3.8, 1.44-10.05), shortness of breath (3.18, 2.24-4.51), and diarrhea (2.04, 1.38-3.04) exhibited increased probability of progressing to severe illness. C-reactive protein, ratio of neutrophils to lymphocytes, and erythrocyte sedimentation rate increased a lot in severe patients compared to nonsevere. Yet, it was found that clinical features including fever, cough, and headache, as well as some comorbidities, have little warning value. CONCLUSIONS The clinical features and laboratory examination could be used to estimate the process of infection in COVID-19 patients. The findings contribute to the more efficient prediction of serious illness for patients with COVID-19 to reduce mortality.
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Affiliation(s)
- Yan Meng
- The First Hospital of China Medical University, Shenyang, 110001 Liaoning, China
| | - Jinpeng Wang
- The First Hospital of China Medical University, Shenyang, 110001 Liaoning, China
| | - Kaicheng Wen
- The First Hospital of China Medical University, Shenyang, 110001 Liaoning, China
| | - Wacili Da
- The First Hospital of China Medical University, Shenyang, 110001 Liaoning, China
| | - Keda Yang
- The First Hospital of China Medical University, Shenyang, 110001 Liaoning, China
| | - Siming Zhou
- The First Hospital of China Medical University, Shenyang, 110001 Liaoning, China
| | - Zhengbo Tao
- The First Hospital of China Medical University, Shenyang, 110001 Liaoning, China
| | - Hang Liu
- Ragon Institute of MGH, MIT and Harvard, USA
| | - Lin Tao
- The First Hospital of China Medical University, Shenyang, 110001 Liaoning, China
- Institute of Health Sciences of China Medical University, Shenyang, 110001 Liaoning, China
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43
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Ran B, Wang Z, Cai W, Ran L, Xia W, Liu W, Peng X. Organic Photo-antimicrobials: Principles, Molecule Design, and Applications. J Am Chem Soc 2021; 143:17891-17909. [PMID: 34677069 DOI: 10.1021/jacs.1c08679] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The emergence of multi-drug-resistant pathogens threatens the healthcare systems world-wide. Recent advances in phototherapy (PT) approaches mediated by photo-antimicrobials (PAMs) provide new opportunities for the current serious antibiotic resistance. During the PT treatment, reactive oxygen species or heat produced by PAMs would react with the cell membrane, consequently leaking cytoplasm components and effectively eradicating different pathogens like bacteria, fungi, viruses, and even parasites. This Perspective will concentrate on the development of different organic photo-antimicrobials (OPAMs) and their application as practical therapeutic agents into therapy for local infections, wound dressings, and removal of biofilms from medical devices. We also discuss how to design highly efficient OPAMs by modifying the chemical structure or conjugating with a targeting component. Moreover, this Perspective provides a discussion of the general challenges and direction for OPAMs and what further needs to be done. It is hoped that through this overview, OPAMs can prosper and will be more widely used for microbial infections in the future, especially at a time when the global COVID-19 epidemic is getting more serious.
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Affiliation(s)
- Bei Ran
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Zuokai Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Wenlin Cai
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Lei Ran
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Wenxi Xia
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Weijian Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.,State Key Laboratory of Fine Chemicals, Shenzhen Research Institute, Dalian University of Technology, Shenzhen 518057, PR China
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44
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Liang J, Li W, Chen J, Huang X, Liu Y, Zhang X, Shu W, Lei B, Zhang H. Antibacterial Activity and Synergetic Mechanism of Carbon Dots against Gram-Positive and -Negative Bacteria. ACS APPLIED BIO MATERIALS 2021; 4:6937-6945. [PMID: 35006993 DOI: 10.1021/acsabm.1c00618] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Carbon dots (CDs) with exciting photoluminescence characteristics, mild toxicity, and good biocompatibility are the research hotspots in biomedical application. Here, a compact antibacterial activity of CDs from levofloxacin hydrochloride is reported. The obtained CDs with an average size of 1.27 nm have fascinating antibacterial properties against both gram-positive and negative bacteria, with minimum inhibitory concentrations (MICs) of 64, 128, 64, and 128 μg/mL for Escherichia coli (E. coli), Pseudomonas aeruginosa (P. aeruginosa), Staphylococcus aureus (S. aureus), and Bacillus subtilis (B. subtilis). The antibacterial processes of CDs from extracellular to intracellular were demonstrated, including physical/chemical binding to membrane, wrapping on the surface, destruction of the cell membrane, and promoting reactive oxygen species (ROS) production into the cell without additional light or oxidant. Surprisingly, CDs exert moderate cytotoxicity on mammalian cells at the equivalent bactericidal concentration, in which the cell viability is more than 80% at 100 μg/mL of CDs. The investigation of antibacterial CDs may provide a useful avenue for further exploiting CD-based nano-bactericides in biomedical applications.
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Affiliation(s)
- Jiarong Liang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P.R. China
| | - Wei Li
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P.R. China.,Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong, Maoming 525100, P.R. China
| | - Jianying Chen
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P.R. China
| | - Xiaoman Huang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P.R. China
| | - Yingliang Liu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P.R. China.,Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong, Maoming 525100, P.R. China
| | - Xuejie Zhang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P.R. China.,Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong, Maoming 525100, P.R. China
| | - Wei Shu
- Instrumental Analysis & Research Centre, South China Agricultural University, Guangzhou 510642, P.R. China
| | - Bingfu Lei
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P.R. China.,Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong, Maoming 525100, P.R. China
| | - Haoran Zhang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P.R. China
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Kelly N, Winning L, Irwin C, Lundy FT, Linden D, McGarvey L, Linden GJ, El Karim IA. Periodontal status and chronic obstructive pulmonary disease (COPD) exacerbations: a systematic review. BMC Oral Health 2021; 21:425. [PMID: 34479518 PMCID: PMC8418022 DOI: 10.1186/s12903-021-01757-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 08/04/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND A growing body of evidence suggests a role for oral bacteria in lung infections. This systematic review aimed to analyse the association between poor periodontal status and the frequency of chronic obstructive pulmonary disease (COPD) exacerbations. METHODS PubMed, Embase, Web of Science, CINAHL and Medline were searched for studies published until May 2020, with no language restriction. Studies reporting periodontal condition, or periodontal treatment outcomes, with data on the frequency of exacerbations of COPD, were identified. The primary outcome was the frequency of exacerbations and secondary outcomes included quality of life (QoL) and hospitalisation. Quality and risk of bias assessment were carried out using the Newcastle Ottawa Scale for observational studies, Robins-1 tool for non-randomised intervention studies and Cochrane risk of bias assessment (RoB-2) tool for randomised clinical trials. Studies were assessed for eligibility and quality by two assessors independently. RESULTS Searches identified 532 records and 8 met the inclusion criteria. Included studies were three clinical trials, one prospective cohort study, one case-control, and three cross-sectional studies. A narrative synthesis was performed. The data from intervention studies showed reduction in the frequency of exacerbations following periodontal treatment. Data from observational studies suggest association of worse plaque scores and fewer teeth with exacerbation, but not pocket depth or clinical attachment loss. Better periodontal health was also associated with reduced frequency of COPD exacerbations, hospitalisations and improved quality of life in COPD patients. Due to the high heterogeneity no meta-analysis was performed. The quality of some of the included studies was low and there was evidence of a high risk of bias. CONCLUSION The data supports possible association between poor periodontal health, the frequency of exacerbations, hospitalisation and quality of life in COPD patients. The evidence is of moderate to low certainty and is limited by high risk of bias suggesting the need for well-designed and adequately powered randomised controlled trials, to inform future research and clinical practice. The PROSPERO registration number CRD42020180328.
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Affiliation(s)
- Niamh Kelly
- Centre for Dentistry, School of Medicine Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
| | - Lewis Winning
- Division of Restorative Dentistry and Periodontology, Dublin Dental University Hospital, Trinity College Dublin, University of Dublin, Lincoln Place, Dublin, Ireland
| | - Christopher Irwin
- Centre for Dentistry, School of Medicine Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
| | - Fionnuala T Lundy
- The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Dermot Linden
- The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Lorcan McGarvey
- The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Gerard J Linden
- Institute of Clinical Sciences Block B, Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
| | - Ikhlas A El Karim
- The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK.
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46
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Spies R, Potter M, Hollamby R, van der Walt S, Hohlfeld A, Ochodo E, van Zyl-Smit RN. Sputum colour as a marker for bacteria in acute exacerbations of COPD: protocol for a systematic review and meta-analysis. Syst Rev 2021; 10:211. [PMID: 34315541 PMCID: PMC8317370 DOI: 10.1186/s13643-021-01767-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 07/20/2021] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is a major cause of years of life lost globally. Acute exacerbations of COPD (AECOPD) drive disease progression, reduce quality of life and are a source of mortality in COPD. Approximately 50% of AECOPD are due to bacterial infections. Diagnosing bacterial infection as the aetiology of AECOPD however remains challenging as investigations are limited by practicality, accuracy and expense. Clinicians have traditionally used sputum colour as a marker of bacterial infection in AECOPD, despite the lack of high-quality evidence for this practice. The aim of this systematic review and meta-analysis is to determine the diagnostic accuracy of sputum colour in the diagnosis of bacterial causes of AECOPD. METHODS Articles will be searched for in electronic databases (MEDLINE, Google Scholar Scopus, Web of Science, Africa-Wide, CINAHL and Health Source Nursing Academy) and we will conduct a review of citation indexes and the grey literature. Two reviewers will independently conduct study selection, against pre-defined eligibility criteria, data extraction and quality assessment of included articles using the QUADAS-2 tool. We will perform a meta-analysis using a bivariate logistic regression model with random effects. We will explore heterogeneity through the visual examination of the forest plots of sensitivities and specificities and through the inclusion of possible sources of heterogeneity as covariates in a meta-regression model if sufficient studies are included in the analysis. We also perform a sensitivity analysis to explore the effect of study quality on our findings. The results of this review will be reported according to the Preferred Reporting Items for Systematic Reviews and Meta-analysis statement and will be submitted for peer-review and publication. DISCUSSION The findings of this review will assist clinicians in diagnosing the aetiology of AECOPD and may have important implications for decision making in resource-limited settings, as well as for antimicrobial stewardship. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42019141498.
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Affiliation(s)
- Ruan Spies
- Port Elizabeth Hospital Complex, Port Elizabeth, South Africa. .,Livingstone Tertiary Hospital, Stanford Road, Port Elizabeth, South Africa.
| | - Matthew Potter
- Port Elizabeth Hospital Complex, Port Elizabeth, South Africa
| | | | | | - Ameer Hohlfeld
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
| | - Eleanor Ochodo
- Centre for Evidence-Based Healthcare, Division of Epidemiology and Biostatistics, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa.,Centre for Global Health Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Richard N van Zyl-Smit
- Division of Pulmonology, Department of Medicine, University of Cape Town, Cape Town, South Africa.,University of Cape Town Lung Institute, Cape Town, South Africa
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47
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Kotlyarov S, Kotlyarova A. Molecular Mechanisms of Lipid Metabolism Disorders in Infectious Exacerbations of Chronic Obstructive Pulmonary Disease. Int J Mol Sci 2021; 22:7634. [PMID: 34299266 PMCID: PMC8308003 DOI: 10.3390/ijms22147634] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/13/2021] [Accepted: 07/15/2021] [Indexed: 02/06/2023] Open
Abstract
Exacerbations largely determine the character of the progression and prognosis of chronic obstructive pulmonary disease (COPD). Exacerbations are connected with changes in the microbiological landscape in the bronchi due to a violation of their immune homeostasis. Many metabolic and immune processes involved in COPD progression are associated with bacterial colonization of the bronchi. The objective of this review is the analysis of the molecular mechanisms of lipid metabolism and immune response disorders in the lungs in COPD exacerbations. The complex role of lipid metabolism disorders in the pathogenesis of some infections is only beginning to be understood, however, there are already fewer and fewer doubts even now about its significance both in the pathogenesis of infectious exacerbations of COPD and in general in the progression of the disease. It is shown that the lipid rafts of the plasma membranes of cells are involved in many processes related to the detection of pathogens, signal transduction, the penetration of pathogens into the cell. Smoking disrupts the normally proceeded processes of lipid metabolism in the lungs, which is a part of the COPD pathogenesis.
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Affiliation(s)
- Stanislav Kotlyarov
- Department of Nursing, Ryazan State Medical University, 390026 Ryazan, Russia
| | - Anna Kotlyarova
- Department of Pharmacology and Pharmacy, Ryazan State Medical University, 390026 Ryazan, Russia;
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Lee RA, Centor RM, Humphrey LL, Jokela JA, Andrews R, Qaseem A, Akl EA, Bledsoe TA, Forciea MA, Haeme R, Kansagara DL, Marcucci M, Miller MC, Obley AJ. Appropriate Use of Short-Course Antibiotics in Common Infections: Best Practice Advice From the American College of Physicians. Ann Intern Med 2021; 174:822-827. [PMID: 33819054 DOI: 10.7326/m20-7355] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
DESCRIPTION Antimicrobial overuse is a major health care issue that contributes to antibiotic resistance. Such overuse includes unnecessarily long durations of antibiotic therapy in patients with common bacterial infections, such as acute bronchitis with chronic obstructive pulmonary disease (COPD) exacerbation, community-acquired pneumonia (CAP), urinary tract infections (UTIs), and cellulitis. This article describes best practices for prescribing appropriate and short-duration antibiotic therapy for patients presenting with these infections. METHODS The authors conducted a narrative literature review of published clinical guidelines, systematic reviews, and individual studies that addressed bronchitis with COPD exacerbations, CAP, UTIs, and cellulitis. This article is based on the best available evidence but was not a formal systematic review. Guidance was prioritized to the highest available level of synthesized evidence. BEST PRACTICE ADVICE 1 Clinicians should limit antibiotic treatment duration to 5 days when managing patients with COPD exacerbations and acute uncomplicated bronchitis who have clinical signs of a bacterial infection (presence of increased sputum purulence in addition to increased dyspnea, and/or increased sputum volume). BEST PRACTICE ADVICE 2 Clinicians should prescribe antibiotics for community-acquired pneumonia for a minimum of 5 days. Extension of therapy after 5 days of antibiotics should be guided by validated measures of clinical stability, which include resolution of vital sign abnormalities, ability to eat, and normal mentation. BEST PRACTICE ADVICE 3 In women with uncomplicated bacterial cystitis, clinicians should prescribe short-course antibiotics with either nitrofurantoin for 5 days, trimethoprim-sulfamethoxazole (TMP-SMZ) for 3 days, or fosfomycin as a single dose. In men and women with uncomplicated pyelonephritis, clinicians should prescribe short-course therapy either with fluoroquinolones (5 to 7 days) or TMP-SMZ (14 days) based on antibiotic susceptibility. BEST PRACTICE ADVICE 4 In patients with nonpurulent cellulitis, clinicians should use a 5- to 6-day course of antibiotics active against streptococci, particularly for patients able to self-monitor and who have close follow-up with primary care.
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Affiliation(s)
- Rachael A Lee
- University of Alabama at Birmingham, Birmingham, Alabama (R.A.L.)
| | - Robert M Centor
- Birmingham Veterans Affairs Medical Center and University of Alabama at Birmingham, Birmingham, Alabama (R.M.C.)
| | - Linda L Humphrey
- Portland Veterans Affairs Medical Center and Oregon Health & Science University, Portland, Oregon (L.L.H.)
| | - Janet A Jokela
- University of Illinois College of Medicine at Urbana-Champaign, Urbana, Illinois (J.A.J.)
| | - Rebecca Andrews
- University of Connecticut Health Center, Farmington, Connecticut (R.A.)
| | - Amir Qaseem
- American College of Physicians, Philadelphia, Pennsylvania (A.Q.)
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Sharmin S, Rahaman MM, Sarkar C, Atolani O, Islam MT, Adeyemi OS. Nanoparticles as antimicrobial and antiviral agents: A literature-based perspective study. Heliyon 2021; 7:e06456. [PMID: 33763612 PMCID: PMC7973307 DOI: 10.1016/j.heliyon.2021.e06456] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/04/2020] [Accepted: 03/04/2021] [Indexed: 12/22/2022] Open
Abstract
The scientific explorations of nanoparticles for their inherent therapeutic potencies as antimicrobial and antiviral agents due to increasing incidences of antibiotic resistance have gained more attention in recent time. This factor amongst others necessitates the search for newer and more effective antimicrobial agents. Several investigations have demonstrated the prospects of nanoparticles in the treatment of various microbial infections. The therapeutic applications of nanoparticles as either delivery agent or broad spectrum inhibition agents in viral and microbial investigations can no longer be overlooked. Their large surface area to volume ratio made them an indispensable substance as delivery agents in many respect. Various materials have been used for the synthesis of nanoparticles with unique properties channelised to meet specific therapeutic requirement. This review focuses on the antibacterial, antifungal, and antiviral potential of nanoparticles with their probable mechanism of action.
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Affiliation(s)
- Shabnam Sharmin
- Department of Pharmacy, Life Science Faculty, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | - Md Mizanur Rahaman
- Department of Pharmacy, Life Science Faculty, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | - Chandan Sarkar
- Department of Pharmacy, Life Science Faculty, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | - Olubunmi Atolani
- Department of Chemistry, University of Ilorin, P.M.B. 1515, Ilorin, Nigeria
| | - Mohammad Torequl Islam
- Department of Pharmacy, Life Science Faculty, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | - Oluyomi Stephen Adeyemi
- Department of Biochemistry, Medicinal Biochemistry, Infectious Diseases, Nanomedicine & Toxicology Laboratory, Landmark University, P.M.B. 1001, Omu-Aran 251101, Kwara State, Nigeria
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Comparative analysis of the alveolar microbiome in COPD, ECOPD, Sarcoidosis, and ILD patients to identify respiratory illnesses specific microbial signatures. Sci Rep 2021; 11:3963. [PMID: 33597669 PMCID: PMC7889618 DOI: 10.1038/s41598-021-83524-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 02/01/2021] [Indexed: 12/18/2022] Open
Abstract
Studying respiratory illness-specific microbial signatures and their interaction with other micro-residents could provide a better understanding of lung microbial ecology. Each respiratory illness has a specific disease etiology, however, so far no study has revealed disease—specific microbial markers. The present study was designed to determine disease-specific microbial features and their interactions with other residents in chronic obstructive pulmonary diseases (stable and exacerbated), sarcoidosis, and interstitial lung diseases. Broncho-alveolar lavage samples (n = 43) were analyzed by SSU rRNA gene sequencing to study the alveolar microbiome in these diseases. A predominance of Proteobacteria followed by Firmicutes, Bacteroidetes, Actinobacteria, and Fusobacteria was observed in all the disease subsets. Shannon diversity was significantly higher in stable COPD when compared to exacerbated chronic obstructive pulmonary disease (ECOPD) (p = 0.0061), and ILD patient samples (p = 0.037). The lung microbiome of the patients with stable COPD was more diverse in comparison to ECOPD and ILD patients (p < 0.001). Lefse analysis identified 40 disease—differentiating microbial features (LDA score (log10) > 4). Species network analysis indicated a significant correlation (p < 0.05) of diseases specific microbial signature with other lung microbiome members. The current study strengthens the proposed hypothesis that each respiratory illness has unique microbial signatures. These microbial signatures could be used as diagnostic markers to differentiate among various respiratory illnesses.
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