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Kleniewska P, Pawliczak R. Can probiotics be used in the prevention and treatment of bronchial asthma? Pharmacol Rep 2024; 76:740-753. [PMID: 38951480 PMCID: PMC11294272 DOI: 10.1007/s43440-024-00618-0] [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: 03/15/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 07/03/2024]
Abstract
Asthma is a lifelong condition with varying degrees of severity and susceptibility to symptom control. Recent studies have examined the effects of individual genus, species, and strains of probiotic microorganisms on the course of asthma. The present review aims to provide an overview of current knowledge on the use of probiotic microorganisms, mainly bacteria of the genus Lactobacillus and Bifidobacterium, in asthma prevention and treatment. Recent data from clinical trials and mouse models of allergic asthma indicate that probiotics have therapeutic potential in this condition. Animal studies indicate that probiotic microorganisms demonstrate anti-inflammatory activity, attenuate airway hyperresponsiveness (AHR), and reduce airway mucus secretion. A randomized, double-blind, placebo-controlled human trials found that combining multi-strain probiotics with prebiotics yielded promising outcomes in the treatment of clinical manifestations of asthma. It appears that probiotic supplementation is safe and significantly reduces the frequency of asthma exacerbations, as well as improved forced expiratory volume and peak expiratory flow parameters, and greater attenuation of inflammation. Due to the small number of available clinical trials, and the use of a wide range of probiotic microorganisms and assessment methods, it is not possible to draw clear conclusions regarding the use of probiotics as asthma treatments.
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Affiliation(s)
- Paulina Kleniewska
- Department of Immunopathology, Faculty of Medicine, Medical University of Lodz, Żeligowskiego 7/9, Łódź, 90-752, Poland.
| | - Rafał Pawliczak
- Department of Immunopathology, Faculty of Medicine, Medical University of Lodz, Żeligowskiego 7/9, Łódź, 90-752, Poland
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2
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Rupar MJ, Hanson H, Rogers S, Botlick B, Trimmer S, Hickman JJ. Modelling the innate immune system in microphysiological systems. LAB ON A CHIP 2024; 24:3604-3625. [PMID: 38957150 PMCID: PMC11264333 DOI: 10.1039/d3lc00812f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 05/09/2024] [Indexed: 07/04/2024]
Abstract
This critical review aims to highlight how modeling of the immune response has adapted over time to utilize microphysiological systems. Topics covered here will discuss the integral components of the immune system in various human body systems, and how these interactions are modeled using these systems. Through the use of microphysiological systems, we have not only expanded on foundations of basic immune cell information, but have also gleaned insight on how immune cells work both independently and collaboratively within an entire human body system.
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Affiliation(s)
- Michael J Rupar
- Hesperos, Inc., 12501 Research Parkway, Suite 100, Orlando, FL 32826, USA.
| | - Hannah Hanson
- Hesperos, Inc., 12501 Research Parkway, Suite 100, Orlando, FL 32826, USA.
| | - Stephanie Rogers
- Hesperos, Inc., 12501 Research Parkway, Suite 100, Orlando, FL 32826, USA.
| | - Brianna Botlick
- Hesperos, Inc., 12501 Research Parkway, Suite 100, Orlando, FL 32826, USA.
| | - Steven Trimmer
- Hesperos, Inc., 12501 Research Parkway, Suite 100, Orlando, FL 32826, USA.
| | - James J Hickman
- Hesperos, Inc., 12501 Research Parkway, Suite 100, Orlando, FL 32826, USA.
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3
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Madanhire T, McHugh G, Simms V, Ngwira L, Gonzalez-Martinez C, Semphere R, Moyo B, Calderwood C, Nicol M, Bandason T, Odland JO, Rehman AM, Ferrand RA. Longitudinal lung function trajectories in response to azithromycin therapy for chronic lung disease in children with HIV infection: a secondary analysis of the BREATHE trial. BMC Pulm Med 2024; 24:339. [PMID: 38997676 PMCID: PMC11245797 DOI: 10.1186/s12890-024-03155-x] [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: 05/03/2024] [Accepted: 07/08/2024] [Indexed: 07/14/2024] Open
Abstract
BACKGROUND Chronic lung disease (CLD) is common among children with HIV (CWH) including in those taking antiretroviral therapy (ART). Azithromycin has both antimicrobial and anti-inflammatory effects and has been effective in improving lung function in a variety of lung diseases. We investigated lung function trajectories among CWH with CLD on ART enrolled in a randomized controlled trial of adjuvant azithromycin. We also investigated factors that modified the effect of azithromycin on lung function. METHODS The study used data from a double-blinded placebo-controlled trial conducted in Malawi and Zimbabwe of 48 weeks on azithromycin (BREATHE: ClinicalTrials.gov NCT02426112) among CWH aged 6 to 19 years taking ART for at least six months who had a forced expiratory volume in one second (FEV1) z-score <-1.0. Participants had a further follow-up period of 24 weeks after intervention cessation. FEV1, forced vital capacity (FVC) and FEV1/FVC were measured at baseline, 24, 48 and 72-weeks and z-scores values calculated. Generalized estimating equations (GEE) models were used to determine the mean effect of azithromycin on lung-function z-scores at each follow-up time point. RESULTS Overall, 347 adolescents (51% male, median age 15 years) were randomized to azithromycin or placebo. The median duration on ART was 6.2 (interquartile range: 3.8-8.6) years and 56.2% had an HIV viral load < 1000copies/ml at baseline. At baseline, the mean FEV1 z-score was - 2.0 (0.7) with 44.7% (n = 155) having an FEV1 z-score <-2, and 10.1% had microbiological evidence of azithromycin resistance. In both trial arms, FEV1 and FVC z-scores improved by 24 weeks but appeared to decline thereafter. The adjusted overall mean difference in FEV1 z-score between the azithromycin and placebo arms was 0.004 [-0.08, 0.09] suggesting no azithromycin effect and this was similar for other lung function parameters. There was no evidence of interaction between azithromycin effect and baseline age, lung function, azithromycin resistance or HIV viral load. CONCLUSION There was no observed azithromycin effect on lung function z-scores at any time point suggesting no therapeutic effect on lung function. TRIAL REGISTRATION ClinicalTrials.gov NCT02426112. First registered on 24/04/2015.
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Affiliation(s)
- Tafadzwa Madanhire
- The Health Research Unit Zimbabwe, Biomedical Research & Training Institute, 10 Seagrave Road, Harare, Zimbabwe.
- MRC International Statistics and Epidemiology Group, London School of Hygiene & Tropical Medicine, London, UK.
| | - Grace McHugh
- The Health Research Unit Zimbabwe, Biomedical Research & Training Institute, 10 Seagrave Road, Harare, Zimbabwe
| | - Victoria Simms
- The Health Research Unit Zimbabwe, Biomedical Research & Training Institute, 10 Seagrave Road, Harare, Zimbabwe
- MRC International Statistics and Epidemiology Group, London School of Hygiene & Tropical Medicine, London, UK
| | - Lucky Ngwira
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi
| | - Carmen Gonzalez-Martinez
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi
- Department of Paediatrics and Child Health, University of Malawi College of Medicine, Blantyre, Malawi
| | - Robina Semphere
- Department of Paediatrics and Child Health, University of Malawi College of Medicine, Blantyre, Malawi
| | - Brewster Moyo
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi
| | - Claire Calderwood
- The Health Research Unit Zimbabwe, Biomedical Research & Training Institute, 10 Seagrave Road, Harare, Zimbabwe
- Clinical Research Department, London School of Hygiene and Tropical Medicine, London, UK
| | - Mark Nicol
- Division of Medical Microbiology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
- Division of Infection and Immunity, School of Biomedical Sciences, University of Western Australia, Perth, Australia
| | - Tsitsi Bandason
- The Health Research Unit Zimbabwe, Biomedical Research & Training Institute, 10 Seagrave Road, Harare, Zimbabwe
| | - Jon O Odland
- Faculty of Health Sciences, UiT, The Arctic University of Norway, Tromsø, Norway
- School of Health Systems and Public Health, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Andrea M Rehman
- MRC International Statistics and Epidemiology Group, London School of Hygiene & Tropical Medicine, London, UK
| | - Rashida A Ferrand
- The Health Research Unit Zimbabwe, Biomedical Research & Training Institute, 10 Seagrave Road, Harare, Zimbabwe
- Clinical Research Department, London School of Hygiene and Tropical Medicine, London, UK
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4
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Tejeda-Garibay S, Zhao L, Hum NR, Pimentel M, Diep AL, Amiri B, Sindi SS, Weilhammer DR, Loots GG, Hoyer KK. Host tracheal and intestinal microbiomes inhibit Coccidioides growth in vitro. Microbiol Spectr 2024; 12:e0297823. [PMID: 38832766 PMCID: PMC11218535 DOI: 10.1128/spectrum.02978-23] [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: 07/31/2023] [Accepted: 03/19/2024] [Indexed: 06/05/2024] Open
Abstract
Coccidioidomycosis, also known as Valley fever, is a disease caused by the fungal pathogen Coccidioides. Unfortunately, patients are often misdiagnosed with bacterial pneumonia, leading to inappropriate antibiotic treatment. The soil Bacillus subtilis-like species exhibits antagonistic properties against Coccidioides in vitro; however, the antagonistic capabilities of host microbiota against Coccidioides are unexplored. We sought to examine the potential of the tracheal and intestinal microbiomes to inhibit the growth of Coccidioides in vitro. We hypothesized that an uninterrupted lawn of microbiota obtained from antibiotic-free mice would inhibit the growth of Coccidioides, while partial in vitro depletion through antibiotic disk diffusion assays would allow a niche for fungal growth. We observed that the microbiota grown on 2×GYE (GYE) and Columbia colistin and nalidixic acid with 5% sheep's blood agar inhibited the growth of Coccidioides, but microbiota grown on chocolate agar did not. Partial depletion of the microbiota through antibiotic disk diffusion revealed diminished inhibition and comparable growth of Coccidioides to controls. To characterize the bacteria grown and identify potential candidates contributing to the inhibition of Coccidioides, 16S rRNA sequencing was performed on tracheal and intestinal agar cultures and murine lung extracts. We found that the host bacteria likely responsible for this inhibition primarily included Lactobacillus and Staphylococcus. The results of this study demonstrate the potential of the host microbiota to inhibit the growth of Coccidioides in vitro and suggest that an altered microbiome through antibiotic treatment could negatively impact effective fungal clearance and allow a niche for fungal growth in vivo. IMPORTANCE Coccidioidomycosis is caused by a fungal pathogen that invades the host lungs, causing respiratory distress. In 2019, 20,003 cases of Valley fever were reported to the CDC. However, this number likely vastly underrepresents the true number of Valley fever cases, as many go undetected due to poor testing strategies and a lack of diagnostic models. Valley fever is also often misdiagnosed as bacterial pneumonia, resulting in 60%-80% of patients being treated with antibiotics prior to an accurate diagnosis. Misdiagnosis contributes to a growing problem of antibiotic resistance and antibiotic-induced microbiome dysbiosis; the implications for disease outcomes are currently unknown. About 5%-10% of symptomatic Valley fever patients develop chronic pulmonary disease. Valley fever causes a significant financial burden and a reduced quality of life. Little is known regarding what factors contribute to the development of chronic infections and treatments for the disease are limited.
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Affiliation(s)
- Susana Tejeda-Garibay
- Quantitative and Systems Biology, Graduate Program, University of California, Merced, Merced, California, USA
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore, California, USA
| | - Lihong Zhao
- Department of Applied Mathematics, University of California, Merced, Merced, California, USA
- Health Sciences Research Institute, University of California, Merced, Merced, California, USA
| | - Nicholas R. Hum
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore, California, USA
| | - Maria Pimentel
- Department of Molecular and Cell Biology, School of Natural Sciences, University of California, Merced, Merced, California, USA
| | - Anh L. Diep
- Quantitative and Systems Biology, Graduate Program, University of California, Merced, Merced, California, USA
| | - Beheshta Amiri
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore, California, USA
| | - Suzanne S. Sindi
- Department of Applied Mathematics, University of California, Merced, Merced, California, USA
- Health Sciences Research Institute, University of California, Merced, Merced, California, USA
| | - Dina R. Weilhammer
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore, California, USA
| | - Gabriela G. Loots
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore, California, USA
- />Department of Orthopaedic Surgery, Lawrence J. Ellison Musculoskeletal Research Center, University of California Davis Health, Sacramento, California, USA
| | - Katrina K. Hoyer
- Quantitative and Systems Biology, Graduate Program, University of California, Merced, Merced, California, USA
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratories, Livermore, California, USA
- Health Sciences Research Institute, University of California, Merced, Merced, California, USA
- Department of Molecular and Cell Biology, School of Natural Sciences, University of California, Merced, Merced, California, USA
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5
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Cabrera-Rubio R, Calvo C, Alcolea S, Bergia M, Atucha J, Pozo F, Casas I, Arroyas M, Collado MC, García-García ML. Gut and respiratory tract microbiota in children younger than 12 months hospitalized for bronchiolitis compared with healthy children: can we predict the severity and medium-term respiratory outcome? Microbiol Spectr 2024; 12:e0255623. [PMID: 38785596 PMCID: PMC11218511 DOI: 10.1128/spectrum.02556-23] [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: 06/18/2023] [Accepted: 04/25/2024] [Indexed: 05/25/2024] Open
Abstract
Growing evidence indicates that gut and respiratory microbiota have a potential key effect on bronchiolitis, mainly caused by respiratory syncytial virus (RSV). This was a prospective study of 96 infants comparing infants with bronchiolitis (n = 57, both RSV and non-RSV associated) to a control group (n = 39). Gut (feces) and respiratory [nasopharyngeal aspirate (NPA)] microbial profiles were analyzed by 16S rRNA amplicon sequencing, and respiratory viruses were identified by PCR. Clinical data of the acute episode and follow-up during the first year after infection were recorded. Pairwise comparisons showed significant differences in the gut (R2 = 0.0639, P = 0.006) and NPA (R2 = 0.0803, P = 0.006) microbiota between cases and controls. A significantly lower gut microbial richness and an increase in the NPA microbial diversity (mainly due to an increase in Haemophilus, Streptococcus, and Neisseria) were observed in the infants with bronchiolitis, in those with the most severe symptoms, and in those who subsequently developed recurrent wheezing episodes after discharge. In NPA, the higher microbial richness differed significantly between the control group and the non-RSV bronchiolitis group (P = 0.01) and between the control group and the RSV bronchiolitis group (P = 0.001). In the gut, the richness differed significantly between the control group and the non-RSV group (P = 0.01) and between the control group and the RSV bronchiolitis group (P = 0.001), with higher diversity in the RSV group. A distinct respiratory and intestinal microbial pattern was observed in infants with bronchiolitis compared with controls. The presence of RSV was a main factor for dysbiosis. Lower gut microbial richness and increased respiratory microbial diversity were associated with respiratory morbidity during follow-up. IMPORTANCE Both the intestinal and respiratory microbiota of children with bronchiolitis, especially those with respiratory syncytial virus infection, are altered and differ from that of healthy children. The microbiota pattern in the acute episode could identify those children who will later have other respiratory episodes in the first year of life. Preventive measures could be adopted for this group of infants.
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Affiliation(s)
- Raul Cabrera-Rubio
- Department of Biotechnology, Institute of Agrochemistry and Food Technology-National Research Council (IATA-CSIC), Paterna, Valencia, Spain
| | - Cristina Calvo
- Paediatric Infectious Diseases Department, La Paz University Hospital, Madrid, Spain
- La Paz University Hospital Institute for Health Research (IdiPAZ), Madrid, Spain
- Translational Research Network in Paediatric Infectious Diseases (RITIP), Madrid, Spain
- CIBER of Infectious Diseases (CIBERINFEC ISCIII), Madrid, Spain
| | - Sonia Alcolea
- Paediatric Infectious Diseases Department, La Paz University Hospital, Madrid, Spain
- La Paz University Hospital Institute for Health Research (IdiPAZ), Madrid, Spain
| | - María Bergia
- Paediatric Infectious Diseases Department, La Paz University Hospital, Madrid, Spain
- La Paz University Hospital Institute for Health Research (IdiPAZ), Madrid, Spain
| | - Jorge Atucha
- Paediatric Infectious Diseases Department, La Paz University Hospital, Madrid, Spain
- La Paz University Hospital Institute for Health Research (IdiPAZ), Madrid, Spain
| | - Francisco Pozo
- Respiratory Viruses and Influenza Unit at the National Centre for Microbiology ISCIII (CIBERESP ISCIII), Madrid, Spain
| | - Inmaculada Casas
- Respiratory Viruses and Influenza Unit at the National Centre for Microbiology ISCIII (CIBERESP ISCIII), Madrid, Spain
| | - María Arroyas
- Paediatric Department, Severo Ochoa University Hospital, Leganés, Madrid, Spain
| | - Maria Carmen Collado
- Department of Biotechnology, Institute of Agrochemistry and Food Technology-National Research Council (IATA-CSIC), Paterna, Valencia, Spain
| | - Maria Luz García-García
- Translational Research Network in Paediatric Infectious Diseases (RITIP), Madrid, Spain
- CIBER of Infectious Diseases (CIBERINFEC ISCIII), Madrid, Spain
- Paediatric Department, Severo Ochoa University Hospital, Leganés, Madrid, Spain
- Instituto de Investigación Sanitaria Puerta de Hierro Segovia de Arana (IDIPHISA), Madrid, Spain
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6
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Pu K, Zhang Z, Li L. Associations between gut microbiota and chronic sinusitis: A bidirectional Mendelian randomization study. Immun Inflamm Dis 2024; 12:e1328. [PMID: 39031512 PMCID: PMC11259002 DOI: 10.1002/iid3.1328] [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: 10/19/2023] [Revised: 06/09/2024] [Accepted: 06/10/2024] [Indexed: 07/22/2024] Open
Abstract
BACKGROUND Studies have indicated a close association between dysbiosis of the gut microbiota and chronic sinusitis. However, the causal relationship between the gut microbiota and the risk of chronic sinusitis remains unclear. METHODS Using genome-wide association study (GWAS) data for the gut microbiota and chronic sinusitis, we conducted a two-sample Mendelian randomization (MR) study to determine the potential causal relationship between the microbiota and chronic sinusitis. We employed the inverse variance-weighted (IVW) method as the primary analytical approach to estimate the effect. Additionally, sensitivity, heterogeneity, and pleiotropy analyses were conducted to evaluate the robustness of the results. Reverse MR analysis was also applied to investigate potential reverse causality. RESULTS Through MR analysis, we identified 17 gut microbiota classifications that are closely associated with chronic sinusitis. However, after Bonferroni multiple correction, only class Bacilli (odds ratio: 0.785, 95% confidence interval: 0.677-0.911, p = .001, false discovery rate = 0.023) maintained a significant causal negative relationship with chronic sinusitis. Sensitivity analysis did not reveal any evidence of heterogeneity or horizontal pleiotropy. Reverse MR analysis found five gut microbiota classifications that are significantly associated with chronic sinusitis, but they were no longer significant after Bonferroni multiple correction. There was no evidence to suggest a reverse causal relationship between chronic sinusitis and class Bacilli. CONCLUSION Specific gut microbiota predicted by genetics exhibit a potential causal relationship with chronic sinusitis, and class Bacilli may have a protective effect on chronic sinusitis.
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Affiliation(s)
- Kunlin Pu
- Department of OtorhinolaryngologyPengzhou Hospital of Traditional Chinese MedicinePengzhouChina
| | - Zhipeng Zhang
- Department of OtorhinolaryngologyPengzhou Hospital of Traditional Chinese MedicinePengzhouChina
| | - Li Li
- Department of OtorhinolaryngologyPengzhou Hospital of Traditional Chinese MedicinePengzhouChina
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7
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Di Vincenzo S, Di Sano C, D'Anna C, Ferraro M, Malizia V, Bruno A, Cristaldi M, Cipollina C, Lazzara V, Pinto P, La Grutta S, Pace E. Tyndallized bacteria prime bronchial epithelial cells to mount an effective innate immune response against infections. Hum Cell 2024; 37:1080-1090. [PMID: 38814518 PMCID: PMC11194193 DOI: 10.1007/s13577-024-01080-z] [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: 02/07/2024] [Accepted: 05/13/2024] [Indexed: 05/31/2024]
Abstract
Airway epithelium represents a physical barrier against toxic substances and pathogens but also presents pattern recognition receptors on the epithelial cells that detect pathogens leading to molecule release and sending signals that activate both the innate and adaptive immune responses. Thus, impaired airway epithelial function and poor integrity may increase the recurrence of infections. Probiotic use in respiratory diseases as adjuvant of traditional therapy is increasingly widespread. There is growing interest in the use of non-viable heat-killed bacteria, such as tyndallized bacteria (TB), due to safety concerns and to their immunomodulatory properties. This study explores in vitro the effects of a TB blend on the immune activation of airway epithelium. 16HBE bronchial epithelial cells were exposed to different concentrations of TB. Cell viability, TB internalization, TLR2 expression, IL-6, IL-8 and TGF-βl expression/release, E-cadherin expression and wound healing were assessed. We found that TB were tolerated, internalized, increased TLR2, E-cadherin expression, IL-6 release and wound healing but decreased both IL-8 and TGF-βl release. In conclusion, TB activate TLR2 pathway without inducing a relevant pro-inflammatory response and improve barrier function, leading to the concept that TB preserve epithelial homeostasis and could be used as strategy to prevent and to manage respiratory infection, exacerbations included.
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Affiliation(s)
- Serena Di Vincenzo
- Institute of Translational Pharmacology (IFT), National Research Council (CNR), Via Ugo La Malfa, 90100, Palermo, Italy
| | - Caterina Di Sano
- Institute of Translational Pharmacology (IFT), National Research Council (CNR), Via Ugo La Malfa, 90100, Palermo, Italy
| | - Claudia D'Anna
- Institute of Translational Pharmacology (IFT), National Research Council (CNR), Via Ugo La Malfa, 90100, Palermo, Italy
| | - Maria Ferraro
- Institute of Translational Pharmacology (IFT), National Research Council (CNR), Via Ugo La Malfa, 90100, Palermo, Italy
| | - Velia Malizia
- Institute of Translational Pharmacology (IFT), National Research Council (CNR), Via Ugo La Malfa, 90100, Palermo, Italy
| | - Andreina Bruno
- Institute of Translational Pharmacology (IFT), National Research Council (CNR), Via Ugo La Malfa, 90100, Palermo, Italy.
| | | | - Chiara Cipollina
- Institute of Translational Pharmacology (IFT), National Research Council (CNR), Via Ugo La Malfa, 90100, Palermo, Italy
- Rimed Foundation, 90100, Palermo, Italy
- NBFC, National Biodiversity Future Center, 90100, Palermo, Italy
| | - Valentina Lazzara
- Dipartimento di Scienze Economiche, Aziendali E Statistiche-Università Degli Studi Di Palermo, 90100, Palermo, Italy
| | - Paola Pinto
- Dipartimento di Sanità Pubblica, Medicina Sperimentale e Forense-Università di Pavia, 27100, Pavia, Italy
| | - Stefania La Grutta
- Institute of Translational Pharmacology (IFT), National Research Council (CNR), Via Ugo La Malfa, 90100, Palermo, Italy
| | - Elisabetta Pace
- Institute of Translational Pharmacology (IFT), National Research Council (CNR), Via Ugo La Malfa, 90100, Palermo, Italy
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8
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Musiol S, Harris CP, Gschwendtner S, Burrell A, Amar Y, Schnautz B, Renisch D, Braun SC, Haak S, Schloter M, Schmidt-Weber CB, Zielinski CE, Alessandrini F. The impact of high-salt diet on asthma in humans and mice: Effect on specific T-cell signatures and microbiome. Allergy 2024; 79:1844-1857. [PMID: 38798015 DOI: 10.1111/all.16148] [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: 12/06/2023] [Revised: 03/25/2024] [Accepted: 04/14/2024] [Indexed: 05/29/2024]
Abstract
BACKGROUND The rise in asthma has been linked to different environmental and lifestyle factors including dietary habits. Whether dietary salt contributes to asthma incidence, remains controversial. We aimed to investigate the impact of higher salt intake on asthma incidence in humans and to evaluate underlying mechanisms using mouse models. METHODS Epidemiological research was conducted using the UK Biobank Resource. Data were obtained from 42,976 participants with a history of allergies. 24-h sodium excretion was estimated from spot urine, and its association with asthma incidence was assessed by Cox regression, adjusting for relevant covariates. For mechanistic studies, a mouse model of mite-induced allergic airway inflammation (AAI) fed with high-salt diet (HSD) or normal-salt chow was used to characterize disease development. The microbiome of lung and feces (as proxy for gut) was analyzed via 16S rRNA gene based metabarcoding approach. RESULTS In humans, urinary sodium excretion was directly associated with asthma incidence among females but not among males. HSD-fed female mice displayed an aggravated AAI characterized by increased levels of total IgE, a TH2-TH17-biased inflammatory cell infiltration accompanied by upregulation of osmosensitive stress genes. HSD induced distinct changes in serum short chain fatty acids and in both gut and lung microbiome, with a lower Bacteroidetes to Firmicutes ratio and decreased Lactobacillus relative abundance in the gut, and enriched members of Gammaproteobacteria in the lung. CONCLUSIONS High dietary salt consumption correlates with asthma incidence in female adults with a history of allergies. Female mice revealed HSD-induced T-cell lung profiles accompanied by alterations of gut and lung microbiome.
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Affiliation(s)
- Stephanie Musiol
- Center of Allergy & Environment (ZAUM), Technical University of Munich (TUM) and Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- Member of the German Center of Lung Research (DZL), Munich, Germany
| | - Carla P Harris
- Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- Dr. von Hauner Children's Hospital, University Hospital, LMU of Munich, Munich, Germany
| | - Silvia Gschwendtner
- Research Unit for Comparative Microbiome Analysis, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Amy Burrell
- Department of Infection Immunology, Leibniz Institute for Natural Product Research & Infection Biology, Hans-Knöll-Institute, Jena, Germany
- Institute of Microbiology, Faculty of Biological Sciences, Friedrich Schiller University, Jena, Germany
| | - Yacine Amar
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Benjamin Schnautz
- Center of Allergy & Environment (ZAUM), Technical University of Munich (TUM) and Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- Member of the German Center of Lung Research (DZL), Munich, Germany
| | - Dennis Renisch
- Department of Chemistry - TRIGA site, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Sonja C Braun
- Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- Chair of Epidemiology, Faculty of Medicine, LMU of Munich, Munich, Germany
| | - Stefan Haak
- Center of Allergy & Environment (ZAUM), Technical University of Munich (TUM) and Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Michael Schloter
- Research Unit for Comparative Microbiome Analysis, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Carsten B Schmidt-Weber
- Center of Allergy & Environment (ZAUM), Technical University of Munich (TUM) and Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- Member of the German Center of Lung Research (DZL), Munich, Germany
| | - Christina E Zielinski
- Department of Infection Immunology, Leibniz Institute for Natural Product Research & Infection Biology, Hans-Knöll-Institute, Jena, Germany
- Institute of Microbiology, Faculty of Biological Sciences, Friedrich Schiller University, Jena, Germany
- Center for Translational Cancer Research & Institute of Virology, Technical University of Munich, Munich, Germany
| | - Francesca Alessandrini
- Center of Allergy & Environment (ZAUM), Technical University of Munich (TUM) and Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- Member of the German Center of Lung Research (DZL), Munich, Germany
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Mushunje PK, Dube FS, Olwagen C, Madhi S, Odland JØ, Ferrand RA, Nicol MP, Abotsi RE. Characterization of bacterial and viral pathogens in the respiratory tract of children with HIV-associated chronic lung disease: a case-control study. BMC Infect Dis 2024; 24:637. [PMID: 38926682 PMCID: PMC11201860 DOI: 10.1186/s12879-024-09540-5] [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: 09/02/2023] [Accepted: 06/19/2024] [Indexed: 06/28/2024] Open
Abstract
INTRODUCTION Chronic lung disease is a major cause of morbidity in African children with HIV infection; however, the microbial determinants of HIV-associated chronic lung disease (HCLD) remain poorly understood. We conducted a case-control study to investigate the prevalence and densities of respiratory microbes among pneumococcal conjugate vaccine (PCV)-naive children with (HCLD +) and without HCLD (HCLD-) established on antiretroviral treatment (ART). METHODS Nasopharyngeal swabs collected from HCLD + (defined as forced-expiratory-volume/second < -1.0 without reversibility postbronchodilation) and age-, site-, and duration-of-ART-matched HCLD- participants aged between 6-19 years enrolled in Zimbabwe and Malawi (BREATHE trial-NCT02426112) were tested for 94 pneumococcal serotypes together with twelve bacteria, including Streptococcus pneumoniae (SP), Staphylococcus aureus (SA), Haemophilus influenzae (HI), Moraxella catarrhalis (MC), and eight viruses, including human rhinovirus (HRV), respiratory syncytial virus A or B, and human metapneumovirus, using nanofluidic qPCR (Standard BioTools formerly known as Fluidigm). Fisher's exact test and logistic regression analysis were used for between-group comparisons and risk factors associated with common respiratory microbes, respectively. RESULTS A total of 345 participants (287 HCLD + , 58 HCLD-; median age, 15.5 years [IQR = 12.8-18], females, 52%) were included in the final analysis. The prevalence of SP (40%[116/287] vs. 21%[12/58], p = 0.005) and HRV (7%[21/287] vs. 0%[0/58], p = 0.032) were higher in HCLD + participants compared to HCLD- participants. Of the participants positive for SP (116 HCLD + & 12 HCLD-), 66% [85/128] had non-PCV-13 serotypes detected. Overall, PCV-13 serotypes (4, 19A, 19F: 16% [7/43] each) and NVT 13 and 21 (9% [8/85] each) predominated. The densities of HI (2 × 104 genomic equivalents [GE/ml] vs. 3 × 102 GE/ml, p = 0.006) and MC (1 × 104 GE/ml vs. 1 × 103 GE/ml, p = 0.031) were higher in HCLD + compared to HCLD-. Bacterial codetection (≥ any 2 bacteria) was higher in the HCLD + group (36% [114/287] vs. (19% [11/58]), (p = 0.014), with SP and HI codetection (HCLD + : 30% [86/287] vs. HCLD-: 12% [7/58], p = 0.005) predominating. Viruses (predominantly HRV) were detected only in HCLD + participants. Lastly, participants with a history of previous tuberculosis treatment were more likely to carry SP (adjusted odds ratio (aOR): 1.9 [1.1 -3.2], p = 0.021) or HI (aOR: 2.0 [1.2 - 3.3], p = 0.011), while those who used ART for ≥ 2 years were less likely to carry HI (aOR: 0.3 [0.1 - 0.8], p = 0.005) and MC (aOR: 0.4 [0.1 - 0.9], p = 0.039). CONCLUSION Children with HCLD + were more likely to be colonized by SP and HRV and had higher HI and MC bacterial loads in their nasopharynx. The role of SP, HI, and HRV in the pathogenesis of CLD, including how they influence the risk of acute exacerbations, should be studied further. TRIAL REGISTRATION The BREATHE trial (ClinicalTrials.gov Identifier: NCT02426112 , registered date: 24 April 2015).
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Affiliation(s)
- Prince K Mushunje
- Department of Molecular and Cell Biology & Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town, South Africa.
| | - Felix S Dube
- Department of Molecular and Cell Biology & Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- School of Medicine, University of Lusaka, Lusaka, Zambia
| | - Courtney Olwagen
- South Africa Medical Research Council Vaccines and Infectious Diseases Analytics Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Shabir Madhi
- South Africa Medical Research Council Vaccines and Infectious Diseases Analytics Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Jon Ø Odland
- Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway
- International Research Laboratory for Reproductive Ecotoxicology (IL RET), The National Research University Higher School of Economics, Moscow, Russia
- School of Health Systems and Public Health, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Rashida A Ferrand
- Biomedical Research and Training Institute, Harare, Zimbabwe
- Clinical Research Department, London School of Hygiene and Tropical Medicine, London, UK
| | - Mark P Nicol
- Marshall Centre, Division of Infection and Immunity, School of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Australia
| | - Regina E Abotsi
- Department of Molecular and Cell Biology & Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Department of Pharmaceutical Microbiology, School of Pharmacy, University of Health and Allied Sciences, Ho, Ghana
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10
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Zhang J, Zheng X, Luo W, Sun B. Cross-domain microbiomes: the interaction of gut, lung and environmental microbiota in asthma pathogenesis. Front Nutr 2024; 11:1346923. [PMID: 38978703 PMCID: PMC11229079 DOI: 10.3389/fnut.2024.1346923] [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: 12/01/2023] [Accepted: 06/03/2024] [Indexed: 07/10/2024] Open
Abstract
Recent experimental and epidemiological studies underscore the vital interaction between the intestinal microbiota and the lungs, an interplay known as the "gut-lung axis". The significance of this axis has been further illuminated following the identification of intestinal microbial metabolites, such as short-chain fatty acids (SCFA), as key mediators in setting the tone of the immune system. Through the gut-lung axis, the gut microbiota and its metabolites, or allergens, are directly or indirectly involved in the immunomodulation of pulmonary diseases, thereby increasing susceptibility to allergic airway diseases such as asthma. Asthma is a complex outcome of the interplay between environmental factors and genetic predispositions. The concept of the gut-lung axis may offer new targets for the prevention and treatment of asthma. This review outlines the relationships between asthma and the respiratory microbiome, gut microbiome, and environmental microbiome. It also discusses the current advancements and applications of microbiomics, offering novel perspectives and strategies for the clinical management of chronic respiratory diseases like asthma.
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Affiliation(s)
- Jiale Zhang
- Department of Clinical Laboratory, National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Disease, State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangzhou Laboratory, Guangzhou, China
| | - Xianhui Zheng
- Department of Clinical Laboratory, National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Disease, State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangzhou Laboratory, Guangzhou, China
| | - Wenting Luo
- Department of Clinical Laboratory, National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Disease, State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangzhou Laboratory, Guangzhou, China
| | - Baoqing Sun
- Department of Clinical Laboratory, National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Disease, State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangzhou Laboratory, Guangzhou, China
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11
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Ioachimescu OC. State of the art: Alternative overlap syndrome-asthma and obstructive sleep apnea. J Investig Med 2024:10815589241249993. [PMID: 38715213 DOI: 10.1177/10815589241249993] [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: 06/16/2024]
Abstract
In the general population, Bronchial Asthma (BA) and Obstructive Sleep Apnea (OSA) are among the most prevalent chronic respiratory disorders. Significant epidemiologic connections and complex pathogenetic pathways link these disorders via complex interactions at genetic, epigenetic, and environmental levels. The coexistence of BA and OSA in an individual likely represents a distinct syndrome, that is, a collection of clinical manifestations attributable to several mechanisms and pathobiological signatures. To avoid terminological confusion, this association has been named alternative overlap syndrome (vs overlap syndrome represented by the chronic obstructive pulmonary disease-OSA association). This comprehensive review summarizes the complex, often bidirectional links between the constituents of the alternative overlap syndrome. Cross-sectional, population, or clinic-based studies are unlikely to elucidate causality or directionality in these relationships. Even longitudinal epidemiological evaluations in BA cohorts developing over time OSA, or OSA cohorts developing BA during follow-up cannot exclude time factors or causal influence of other known or unknown mediators. As such, a lot of pathophysiological interactions described here have suggestive evidence, biological plausibility, potential or actual directionality. By showcasing existing evidence and current knowledge gaps, the hope is that deliberate, focused, and collaborative efforts in the near-future will be geared toward opportunities to shine light on the unknowns and accelerate discovery in this field of health, clinical care, education, research, and scholarly endeavors.
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12
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Ashford JR. Impaired oral health: a required companion of bacterial aspiration pneumonia. FRONTIERS IN REHABILITATION SCIENCES 2024; 5:1337920. [PMID: 38894716 PMCID: PMC11183832 DOI: 10.3389/fresc.2024.1337920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 05/20/2024] [Indexed: 06/21/2024]
Abstract
Laryngotracheal aspiration has a widely-held reputation as a primary cause of lower respiratory infections, such as pneumonia, and is a major concern of care providers of the seriously ill orelderly frail patient. Laryngeal mechanical inefficiency resulting in aspiration into the lower respiratory tract, by itself, is not the cause of pneumonia. It is but one of several factors that must be present simultaneously for pneumonia to develop. Aspiration of oral and gastric contentsoccurs often in healthy people of all ages and without significant pulmonary consequences. Inthe seriously ill or elderly frail patient, higher concentrations of pathogens in the contents of theaspirate are the primary catalyst for pulmonary infection development if in an immunocompromised lower respiratory system. The oral cavity is a complex and ever changing eco-environment striving to maintain homogeneity among the numerous microbial communities inhabiting its surfaces. Poor maintenance of these surfaces to prevent infection can result inpathogenic changes to these microbial communities and, with subsequent proliferation, can altermicrobial communities in the tracheal and bronchial passages. Higher bacterial pathogen concentrations mixing with oral secretions, or with foods, when aspirated into an immunecompromised lower respiratory complex, may result in bacterial aspiration pneumonia development, or other respiratory or systemic diseases. A large volume of clinical evidence makes it clear that oral cleaning regimens, when used in caring for ill or frail patients in hospitals and long-term care facilities, drastically reduce the incidence of respiratory infection and death. The purpose of this narrative review is to examine oral health as a required causative companionin bacterial aspiration pneumonia development, and the effectiveness of oral infection control inthe prevention of this disease.
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13
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Bongers KS, Massett A, O'Dwyer DN. The Oral-Lung Microbiome Axis in Connective Tissue Disease-Related Interstitial Lung Disease. Semin Respir Crit Care Med 2024; 45:449-458. [PMID: 38626906 DOI: 10.1055/s-0044-1785673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
Connective tissue disease-related interstitial lung disease (CTD-ILD) is a frequent and serious complication of CTD, leading to high morbidity and mortality. Unfortunately, its pathogenesis remains poorly understood; however, one intriguing contributing factor may be the microbiome of the mouth and lungs. The oral microbiome, which is a major source of the lung microbiome through recurrent microaspiration, is altered in ILD patients. Moreover, in recent years, several lines of evidence suggest that changes in the oral and lung microbiota modulate the pulmonary immune response and thus may play a role in the pathogenesis of ILDs, including CTD-ILD. Here, we review the existing data demonstrating oral and lung microbiota dysbiosis and possible contributions to the development of CTD-ILD in rheumatoid arthritis, Sjögren's syndrome, systemic sclerosis, and systemic lupus erythematosus. We identify several areas of opportunity for future investigations into the role of the oral and lung microbiota in CTD-ILD.
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Affiliation(s)
- Kale S Bongers
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Angeline Massett
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - David N O'Dwyer
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
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14
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Luo P, Gao D, Zhang Q. Genetic causal relationship between gut microbiota and basal cell carcinoma: A two-sample mendelian randomization study. Skin Res Technol 2024; 30:e13804. [PMID: 38895789 PMCID: PMC11187847 DOI: 10.1111/srt.13804] [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: 05/14/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024]
Abstract
OBJECTIVE Research has previously established connections between the intestinal microbiome and the progression of some cancers. However, there is a noticeable gap in the literature in regard to using Mendelian randomisation (MR) to delve into potential causal relationships between the gut microbiota (GM) and basal cell carcinoma (BCC). Therefore, the purpose of our study was to use MR to explore the causal relationship between four kinds of GM (Bacteroides, Streptococcus, Proteobacteria and Lachnospiraceae) and BCC. METHODS We used genome-wide association study (GWAS) data and MR to explore the causal relationship between four kinds of GM and BCC. This study primarily employed the random effect inverse variance weighted (IVW) model for analysis, as complemented by additional methods including the simple mode, weighted median, weighted mode and MR‒Egger methods. We used heterogeneity and horizontal multiplicity to judge the reliability of each analysis. MR-PRESSO was mainly used to detect and correct outliers. RESULTS The random-effects IVW results showed that Bacteroides (OR = 0.936, 95% CI = 0.787-1.113, p = 0.455), Streptococcus (OR = 0.974, 95% CI = 0.875-1.083, p = 0.629), Proteobacteria (OR = 1.113, 95% CI = 0.977-1.267, p = 0.106) and Lachnospiraceae (OR = 1.027, 95% CI = 0.899-1.173, p = 0.688) had no genetic causal relationship with BCC. All analyses revealed no horizontal pleiotropy, heterogeneity or outliers. CONCLUSION We found that Bacteroides, Streptococcus, Proteobacteria and Lachnospiraceae do not increase the incidence of BCC at the genetic level, which provides new insight for the study of GM and BCC.
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Affiliation(s)
- Pan Luo
- Department of Comprehensive Plastic SurgeryPlastic Surgery HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Dejin Gao
- Department of Comprehensive Plastic SurgeryPlastic Surgery HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Qingguo Zhang
- Department of Comprehensive Plastic SurgeryPlastic Surgery HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
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15
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Paciência I, Sharma N, Hugg TT, Rantala AK, Heibati B, Al-Delaimy WK, Jaakkola MS, Jaakkola JJ. The Role of Biodiversity in the Development of Asthma and Allergic Sensitization: A State-of-the-Science Review. ENVIRONMENTAL HEALTH PERSPECTIVES 2024; 132:66001. [PMID: 38935403 PMCID: PMC11218706 DOI: 10.1289/ehp13948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 05/06/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024]
Abstract
BACKGROUND Changes in land use and climate change have been reported to reduce biodiversity of both the environment and human microbiota. These reductions in biodiversity may lead to inadequate and unbalanced stimulation of immunoregulatory circuits and, ultimately, to clinical diseases, such as asthma and allergies. OBJECTIVE We summarized available empirical evidence on the role of inner (gut, skin, and airways) and outer (air, soil, natural waters, plants, and animals) layers of biodiversity in the development of asthma, wheezing, and allergic sensitization. METHODS We conducted a systematic search in SciVerse Scopus, PubMed MEDLINE, and Web of Science up to 5 March 2024 to identify relevant human studies assessing the relationships between inner and outer layers of biodiversity and the risk of asthma, wheezing, or allergic sensitization. The protocol was registered in PROSPERO (CRD42022381725). RESULTS A total of 2,419 studies were screened and, after exclusions and a full-text review of 447 studies, 82 studies were included in the comprehensive, final review. Twenty-nine studies reported a protective effect of outer layer biodiversity in the development of asthma, wheezing, or allergic sensitization. There were also 16 studies suggesting an effect of outer layer biodiversity on increasing asthma, wheezing, or allergic sensitization. However, there was no clear evidence on the role of inner layer biodiversity in the development of asthma, wheezing, and allergic sensitization (13 studies reported a protective effect and 15 reported evidence of an increased risk). CONCLUSIONS Based on the reviewed literature, a future systematic review could focus more specifically on outer layer biodiversity and asthma. It is unlikely that association with inner layer biodiversity would have enough evidence for systematic review. Based on this comprehensive review, there is a need for population-based longitudinal studies to identify critical periods of exposure in the life course into adulthood and to better understand mechanisms linking environmental exposures and changes in microbiome composition, diversity, and/or function to development of asthma and allergic sensitization. https://doi.org/10.1289/EHP13948.
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Affiliation(s)
- Inês Paciência
- Center for Environmental and Respiratory Health Research, Population Health, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Needhi Sharma
- University of California, San Diego, San Diego, California, USA
| | - Timo T. Hugg
- Center for Environmental and Respiratory Health Research, Population Health, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Aino K. Rantala
- Center for Environmental and Respiratory Health Research, Population Health, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Behzad Heibati
- Center for Environmental and Respiratory Health Research, Population Health, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | | | - Maritta S. Jaakkola
- Center for Environmental and Respiratory Health Research, Population Health, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Jouni J.K. Jaakkola
- Center for Environmental and Respiratory Health Research, Population Health, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
- Finnish Meteorological Institute, Helsinki, Finland
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16
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van Beveren GJ, de Steenhuijsen Piters WAA, Boeschoten SA, Louman S, Chu ML, Arp K, Fraaij PL, de Hoog M, Buysse C, van Houten MA, Sanders EAM, Merkus PJFM, Boehmer AL, Bogaert D. Nasopharyngeal microbiota in children is associated with severe asthma exacerbations. J Allergy Clin Immunol 2024; 153:1574-1585.e14. [PMID: 38467291 DOI: 10.1016/j.jaci.2024.02.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 02/08/2024] [Accepted: 02/16/2024] [Indexed: 03/13/2024]
Abstract
BACKGROUND The respiratory microbiome has been associated with the etiology and disease course of asthma. OBJECTIVE We sought to assess the nasopharyngeal microbiota in children with a severe asthma exacerbation and their associations with medication, air quality, and viral infection. METHODS A cross-sectional study was performed among children aged 2 to 18 years admitted to the medium care unit (MCU; n = 84) or intensive care unit (ICU; n = 78) with an asthma exacerbation. For case-control analyses, we matched all cases aged 2 to 6 years (n = 87) to controls in a 1:2 ratio. Controls were participants of either a prospective case-control study or a longitudinal birth cohort (n = 182). The nasopharyngeal microbiota was characterized by 16S-rRNA-gene sequencing. RESULTS Cases showed higher Shannon diversity index (ICU and MCU combined; P = .002) and a distinct microbial community composition when compared with controls (permutational multivariate ANOVA R2 = 1.9%; P < .001). We observed significantly higher abundance of Staphylococcus and "oral" taxa, including Neisseria, Veillonella, and Streptococcus spp. and a lower abundance of Dolosigranulum pigrum, Corynebacterium, and Moraxella spp. (MaAsLin2; q < 0.25) in cases versus controls. Furthermore, Neisseria abundance was associated with more severe disease (ICU vs MCU MaAslin2, P = .03; q = 0.30). Neisseria spp. abundance was also related with fine particulate matter exposure, whereas Haemophilus and Streptococcus abundances were related with recent inhaled corticosteroid use. We observed no correlations with viral infection. CONCLUSIONS Our results demonstrate that children admitted with asthma exacerbations harbor a microbiome characterized by overgrowth of Staphylococcus and "oral" microbes and an underrepresentation of beneficial niche-appropriate commensals. Several of these associations may be explained by (environmental or medical) exposures, although cause-consequence relationships remain unclear and require further investigations.
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Affiliation(s)
- Gina J van Beveren
- Department of Paediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital/University Medical Center Utrecht, Utrecht, The Netherlands; Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, The Netherlands; Department of Paediatrics, Spaarne Hospital, Haarlem, The Netherlands
| | - Wouter A A de Steenhuijsen Piters
- Department of Paediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital/University Medical Center Utrecht, Utrecht, The Netherlands; Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Shelley A Boeschoten
- Department of Neonatal and Paediatric Intensive Care, Erasmus University Medical Center-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Sam Louman
- Department of Paediatrics, Spaarne Hospital, Haarlem, The Netherlands
| | - Mei Ling Chu
- Department of Paediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital/University Medical Center Utrecht, Utrecht, The Netherlands; Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Kayleigh Arp
- Department of Paediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital/University Medical Center Utrecht, Utrecht, The Netherlands; Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Pieter L Fraaij
- Pediatric Infectious Diseases & Immunology, Erasmus University Medical Center-Sophia Children's Hospital, Rotterdam, The Netherlands; Department of Viroscience, Erasmus University Medical Center-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Matthijs de Hoog
- Department of Neonatal and Paediatric Intensive Care, Erasmus University Medical Center-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Corinne Buysse
- Department of Neonatal and Paediatric Intensive Care, Erasmus University Medical Center-Sophia Children's Hospital, Rotterdam, The Netherlands
| | | | - Elisabeth A M Sanders
- Department of Paediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital/University Medical Center Utrecht, Utrecht, The Netherlands; Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Peter J F M Merkus
- Division of Respiratory Medicine, Department of Paediatrics, Radboudumc Amalia Children's Hospital, Nijmegen, The Netherlands
| | - Annemie L Boehmer
- Department of Paediatrics, Spaarne Hospital, Haarlem, The Netherlands; Department of Paediatrics, Maasstad Hospital, Rotterdam, The Netherlands
| | - Debby Bogaert
- Department of Paediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital/University Medical Center Utrecht, Utrecht, The Netherlands; Centre for Inflammation Research, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, United Kingdom.
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Lahmamsi H, Ananou S, Lahlali R, Tahiri A. Lactic acid bacteria as an eco-friendly approach in plant production: Current state and prospects. Folia Microbiol (Praha) 2024; 69:465-489. [PMID: 38393576 DOI: 10.1007/s12223-024-01146-3] [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: 07/25/2023] [Accepted: 01/31/2024] [Indexed: 02/25/2024]
Abstract
Since the late nineteenth century, the agricultural sector has experienced a tremendous increase in chemical use in response to the growing population. Consequently, the intensive and indiscriminate use of these substances caused serious damage on several levels, including threatening human health, disrupting soil microbiota, affecting wildlife ecosystems, and causing groundwater pollution. As a solution, the application of microbial-based products presents an interesting and ecological restoration tool. The use of Plant Growth-Promoting Microbes (PGPM) affected positive production, by increasing its efficiency, reducing production costs, environmental pollution, and chemical use. Among these microbial communities, lactic acid bacteria (LAB) are considered an interesting candidate to be formulated and applied as effective microbes. Indeed, these bacteria are approved by the European Food Safety Authority (EFSA) and Food and Drug Administration (FDA) as Qualified Presumption of Safety statute and Generally Recognized as Safe for various applications. To do so, this review comes as a road map for future research, which addresses the different steps included in LAB formulation as biocontrol, bioremediation, or plant growth promoting agents from the isolation process to their field application passing by the different identification methods and their various uses. The plant application methods as well as challenges limiting their use in agriculture are also discussed.
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Affiliation(s)
- Haitam Lahmamsi
- Laboratoire de Biotechnologie Microbienne et Molécules Bioactives, Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdellah, Route Immouzer BP 2202, Fez, Morocco
- Unité de Phytopathologie, Département de Protection des Plantes, Ecole Nationale d'Agriculture, Km10, Rt Haj Kaddour, BP S/40, 50001, Meknes, Morocco
| | - Samir Ananou
- Laboratoire de Biotechnologie Microbienne et Molécules Bioactives, Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdellah, Route Immouzer BP 2202, Fez, Morocco
| | - Rachid Lahlali
- Unité de Phytopathologie, Département de Protection des Plantes, Ecole Nationale d'Agriculture, Km10, Rt Haj Kaddour, BP S/40, 50001, Meknes, Morocco.
| | - Abdessalem Tahiri
- Unité de Phytopathologie, Département de Protection des Plantes, Ecole Nationale d'Agriculture, Km10, Rt Haj Kaddour, BP S/40, 50001, Meknes, Morocco.
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Xepapadaki P, Megremis S, Rovina N, Wardzyńska A, Pasioti M, Kritikou M, Papadopoulos NG. Exploring the Impact of Airway Microbiome on Asthma Morbidity: A Focus on the "Constructing a 'Eubiosis Reinstatement Therapy' for Asthma-CURE" Project. Pulm Ther 2024; 10:171-182. [PMID: 38814533 PMCID: PMC11282048 DOI: 10.1007/s41030-024-00261-3] [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: 02/26/2024] [Accepted: 05/02/2024] [Indexed: 05/31/2024] Open
Abstract
The asthma pandemic imposes a huge burden on patients and health systems in both developed and developing countries. Despite available treatments, symptom control is generally suboptimal, and hospitalizations and deaths remain at unacceptably high levels. A pivotal aspect of asthma that warrants further exploration is the influence of the respiratory microbiome and virome in modulating disease activity. A plethora of studies report that the respiratory microbiome is characteristically dysbiotic in asthma. In addition, our data suggest that dysbiosis is also observed on the respiratory virome, partly characterized by the reduced abundance of bacteriophages (phages). Even though phages can naturally infect and control their bacterial prey, phage therapy has been grossly neglected in the Western world, although more recently it is more widely used as a novel tool against bacterial infections. However, it has never been used for tackling microbiome dysbiosis in human non-communicable diseases. This review provides an up-to-date understanding of the microbiome and virome's role within the airways in relation to asthma morbidity. It also advances the rationale and hypothesis for the CURE project. Specifically, the CURE project suggests that managing the respiratory microbiome through phage therapy is viable and may result in restoring eubiosis within the asthmatic airway. This entails controlling immune dysregulation and the clinical manifestation of the disease. To accomplish this goal, it is crucial to predict the effects of introducing specific phage mixtures into the intricate ecology of the airways and devise suitable interventions.
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Affiliation(s)
- Paraskevi Xepapadaki
- Allergy Department, 2nd Paediatric Clinic, National and Kapodistrian University of Athens, 41, Fidippidou, 11527, Athens, Greece.
| | - Spyridon Megremis
- Department of Genetics and Genome Biology, Centre for Phage Research, University of Leicester, Leicester, UK
| | - Nikoletta Rovina
- 1st Department of Respiratory Medicine, Sotiria Hospital, School of Medicine, National and Kapodistrian University of Athens, 11527, Athens, Greece
| | | | - Maria Pasioti
- Allergy Department, 2nd Paediatric Clinic, National and Kapodistrian University of Athens, 41, Fidippidou, 11527, Athens, Greece
| | - Maria Kritikou
- Allergy Department, 2nd Paediatric Clinic, National and Kapodistrian University of Athens, 41, Fidippidou, 11527, Athens, Greece
| | - Nikolaos G Papadopoulos
- Allergy Department, 2nd Paediatric Clinic, National and Kapodistrian University of Athens, 41, Fidippidou, 11527, Athens, Greece
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19
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Ziaka M, Exadaktylos A. Exploring the lung-gut direction of the gut-lung axis in patients with ARDS. Crit Care 2024; 28:179. [PMID: 38802959 PMCID: PMC11131229 DOI: 10.1186/s13054-024-04966-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 05/22/2024] [Indexed: 05/29/2024] Open
Abstract
Acute respiratory distress syndrome (ARDS) represents a life-threatening inflammatory reaction marked by refractory hypoxaemia and pulmonary oedema. Despite advancements in treatment perspectives, ARDS still carries a high mortality rate, often due to systemic inflammatory responses leading to multiple organ dysfunction syndrome (MODS). Indeed, the deterioration and associated mortality in patients with acute lung injury (LI)/ARDS is believed to originate alongside respiratory failure mainly from the involvement of extrapulmonary organs, a consequence of the complex interaction between initial inflammatory cascades related to the primary event and ongoing mechanical ventilation-induced injury resulting in multiple organ failure (MOF) and potentially death. Even though recent research has increasingly highlighted the role of the gastrointestinal tract in this process, the pathophysiology of gut dysfunction in patients with ARDS remains mainly underexplored. This review aims to elucidate the complex interplay between lung and gut in patients with LI/ARDS. We will examine various factors, including systemic inflammation, epithelial barrier dysfunction, the effects of mechanical ventilation (MV), hypercapnia, and gut dysbiosis. Understanding these factors and their interaction may provide valuable insights into the pathophysiology of ARDS and potential therapeutic strategies to improve patient outcomes.
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Affiliation(s)
- Mairi Ziaka
- Clinic of Geriatric Medicine, Center of Geriatric Medicine and Rehabilitation, Kantonsspital Baselland, Bruderholz, Switzerland.
- Department of Emergency Medicine, Inselspital, University Hospital, University of Bern, Bern, Switzerland.
| | - Aristomenis Exadaktylos
- Department of Emergency Medicine, Inselspital, University Hospital, University of Bern, Bern, Switzerland
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20
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Bényei ÉB, Nazeer RR, Askenasy I, Mancini L, Ho PM, Sivarajan GAC, Swain JEV, Welch M. The past, present and future of polymicrobial infection research: Modelling, eavesdropping, terraforming and other stories. Adv Microb Physiol 2024; 85:259-323. [PMID: 39059822 DOI: 10.1016/bs.ampbs.2024.04.002] [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] [Indexed: 07/28/2024]
Abstract
Over the last two centuries, great advances have been made in microbiology as a discipline. Much of this progress has come about as a consequence of studying the growth and physiology of individual microbial species in well-defined laboratory media; so-called "axenic growth". However, in the real world, microbes rarely live in such "splendid isolation" (to paraphrase Foster) and more often-than-not, share the niche with a plethora of co-habitants. The resulting interactions between species (and even between kingdoms) are only very poorly understood, both on a theoretical and experimental level. Nevertheless, the last few years have seen significant progress, and in this review, we assess the importance of polymicrobial infections, and show how improved experimental traction is advancing our understanding of these. A particular focus is on developments that are allowing us to capture the key features of polymicrobial infection scenarios, especially as those associated with the human airways (both healthy and diseased).
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Affiliation(s)
| | | | - Isabel Askenasy
- Department of Biochemistry, Tennis Court Road, Cambridge, United Kingdom
| | - Leonardo Mancini
- Department of Biochemistry, Tennis Court Road, Cambridge, United Kingdom
| | - Pok-Man Ho
- Department of Biochemistry, Tennis Court Road, Cambridge, United Kingdom
| | | | - Jemima E V Swain
- Department of Biochemistry, Tennis Court Road, Cambridge, United Kingdom
| | - Martin Welch
- Department of Biochemistry, Tennis Court Road, Cambridge, United Kingdom.
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21
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Motta H, Reuwsaat JCV, Lopes FC, Viezzer G, Volpato FCZ, Barth AL, de Tarso Roth Dalcin P, Staats CC, Vainstein MH, Kmetzsch L. Comparative microbiome analysis in cystic fibrosis and non-cystic fibrosis bronchiectasis. Respir Res 2024; 25:211. [PMID: 38762736 PMCID: PMC11102160 DOI: 10.1186/s12931-024-02835-w] [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: 01/04/2024] [Accepted: 05/04/2024] [Indexed: 05/20/2024] Open
Abstract
BACKGROUND Bronchiectasis is a condition characterized by abnormal and irreversible bronchial dilation resulting from lung tissue damage and can be categorized into two main groups: cystic fibrosis (CF) and non-CF bronchiectasis (NCFB). Both diseases are marked by recurrent infections, inflammatory exacerbations, and lung damage. Given that infections are the primary drivers of disease progression, characterization of the respiratory microbiome can shed light on compositional alterations and susceptibility to antimicrobial drugs in these cases compared to healthy individuals. METHODS To assess the microbiota in the two studied diseases, 35 subjects were recruited, comprising 10 NCFB and 13 CF patients and 12 healthy individuals. Nasopharyngeal swabs and induced sputum were collected, and total DNA was extracted. The DNA was then sequenced by the shotgun method and evaluated using the SqueezeMeta pipeline and R. RESULTS We observed reduced species diversity in both disease cohorts, along with distinct microbial compositions and profiles of antimicrobial resistance genes, compared to healthy individuals. The nasopharynx exhibited a consistent microbiota composition across all cohorts. Enrichment of members of the Burkholderiaceae family and an increased Firmicutes/Bacteroidetes ratio in the CF cohort emerged as key distinguishing factors compared to NCFB group. Staphylococcus aureus and Prevotella shahii also presented differential abundance in the CF and NCFB cohorts, respectively, in the lower respiratory tract. Considering antimicrobial resistance, a high number of genes related to antibiotic efflux were detected in both disease groups, which correlated with the patient's clinical data. CONCLUSIONS Bronchiectasis is associated with reduced microbial diversity and a shift in microbial and resistome composition compared to healthy subjects. Despite some similarities, CF and NCFB present significant differences in microbiome composition and antimicrobial resistance profiles, suggesting the need for customized management strategies for each disease.
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Affiliation(s)
- Heryk Motta
- Laboratório de Biologia Molecular de Patógenos, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Júlia Catarina Vieira Reuwsaat
- Laboratório de Biologia Molecular de Patógenos, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Fernanda Cortez Lopes
- Departamento de Biofísica, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Graciele Viezzer
- Serviço de Pneumologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Fabiana Caroline Zempulski Volpato
- Laboratório de Pesquisa em Resistência Bacteriana, Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Afonso Luís Barth
- Laboratório de Pesquisa em Resistência Bacteriana, Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Paulo de Tarso Roth Dalcin
- Serviço de Pneumologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Departamento de Medicina Interna, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Charley Christian Staats
- Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Marilene Henning Vainstein
- Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Laboratório de Microrganismos de Importância Médica e Biotecnológica, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Lívia Kmetzsch
- Laboratório de Biologia Molecular de Patógenos, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
- Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
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22
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Marcos AT, Rus MJ, Areal-Quecuty V, Simon-Soro A, Navarro-Pando JM. Distinct Gastrointestinal and Reproductive Microbial Patterns in Female Holobiont of Infertility. Microorganisms 2024; 12:989. [PMID: 38792817 PMCID: PMC11124254 DOI: 10.3390/microorganisms12050989] [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: 04/11/2024] [Revised: 05/07/2024] [Accepted: 05/09/2024] [Indexed: 05/26/2024] Open
Abstract
The microbiota is in symbiosis with the human body as a holobiont. Infertility conditions affect the female reproductive tract (FRT) and its resident microbiota. However, a disturbance in homeostasis could influence the FRT and other distal body sites, such as the gastrointestinal tract (GIT). We included 21 patients with endometriosis and other infertility-associated diseases with clinical profiles and biological samples from the FRT (endometrium, endometrial fluid, and vagina), and GIT samples (oral and feces). We performed a 16S rRNA analysis of site-specific microbial communities and estimated diversity metrics. The study found body site-specific microbial patterns in the FRT-GIT. In both study groups, Lactobacillus was the most shared Amplicon Sequence Variant (ASV), a precise identifier of microbial sequences, between endometrial and vagina samples. However, shared Gardnerella and Enterobacteriaceae ASVs were linked to other conditions but not endometriosis. Remarkably, Haemophilus was a specific GIT-shared taxon in endometriosis cases. In conclusion, infertility influences distinctly the FRT and GIT microbiomes, with endometriosis showing unique microbial characteristics. We proposed the concept of 'female holobiont' as a community that comprises the host and microbes that must maintain overall homeostasis across all body sites to ensure a woman's health. Insights into these microbial patterns not only advance our understanding of the pathophysiology of infertility but also open new avenues for developing microbe-based therapeutic interventions aimed at restoring microbial balance, thereby enhancing fertility prospects.
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Affiliation(s)
- Ana T. Marcos
- Unidad de Genética, INEBIR (Instituto para el Estudio de la Biología de la Reproducción Humana), 41001 Sevilla, Spain (J.M.N.-P.)
- Cátedra de Reproducción y Genética Humana, INEBIR/Universidad Europea del Atlántico (UNEATLANTICO), 39011 Santander, Spain
- FUNIBER (Fundación Universitaria Iberoamericana), 08005 Barcelona, Spain
- Hospital San Juan de Dios, 41005 Sevilla, Spain
| | - Maria J. Rus
- Departamento de Estomatología, Facultad de Odontología, Universidad de Sevilla, 41009 Sevilla, Spain
| | - Victoria Areal-Quecuty
- Departamento de Estomatología, Facultad de Odontología, Universidad de Sevilla, 41009 Sevilla, Spain
| | - Aurea Simon-Soro
- Departamento de Estomatología, Facultad de Odontología, Universidad de Sevilla, 41009 Sevilla, Spain
| | - José Manuel Navarro-Pando
- Unidad de Genética, INEBIR (Instituto para el Estudio de la Biología de la Reproducción Humana), 41001 Sevilla, Spain (J.M.N.-P.)
- Cátedra de Reproducción y Genética Humana, INEBIR/Universidad Europea del Atlántico (UNEATLANTICO), 39011 Santander, Spain
- FUNIBER (Fundación Universitaria Iberoamericana), 08005 Barcelona, Spain
- Hospital San Juan de Dios, 41005 Sevilla, Spain
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23
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Sampaio Dotto Fiuza B, Machado de Andrade C, Meirelles PM, Santos da Silva J, de Jesus Silva M, Vila Nova Santana C, Pimentel Pinheiro G, Mpairwe H, Cooper P, Brooks C, Pembrey L, Taylor S, Douwes J, Cruz ÁA, Barreto ML, Pearce N, Figueiredo CA. Gut microbiome signature and nasal lavage inflammatory markers in young people with asthma. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. GLOBAL 2024; 3:100242. [PMID: 38585449 PMCID: PMC10998106 DOI: 10.1016/j.jacig.2024.100242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 10/04/2023] [Accepted: 12/24/2023] [Indexed: 04/09/2024]
Abstract
Background Asthma is a complex disease and a severe global public health problem resulting from interactions between genetic background and environmental exposures. It has been suggested that gut microbiota may be related to asthma development; however, such relationships needs further investigation. Objective This study aimed to characterize the gut microbiota as well as the nasal lavage cytokine profile of asthmatic and nonasthmatic individuals. Methods Stool and nasal lavage samples were collected from 29 children and adolescents with type 2 asthma and 28 children without asthma in Brazil. Amplicon sequencing of the stool bacterial V4 region of the 16S rRNA gene was performed using Illumina MiSeq. Microbiota analysis was performed by QIIME 2 and PICRUSt2. Type 2 asthma phenotype was characterized by high sputum eosinophil counts and positive skin prick tests for house dust mite, cockroach, and/or cat or dog dander. The nasal immune marker profile was assessed using a customized multiplex panel. Results Stool microbiota differed significantly between asthmatic and nonasthmatic participants (P = .001). Bacteroides was more abundant in participants with asthma (P < .05), while Prevotella was more abundant in nonasthmatic individuals (P < .05). In people with asthma, the relative abundance of Bacteroides correlated with IL-4 concentration in nasal lavage samples. Inference of microbiota functional capacity identified differential fatty acid biosynthesis in asthmatic compared to nonasthmatic subjects. Conclusion The stool microbiota differed between asthmatic and nonasthmatic young people in Brazil. Asthma was associated with higher Bacteroides levels, which correlated with nasal IL-4 concentration.
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Affiliation(s)
| | | | - Pedro Milet Meirelles
- Instituto de Biologia, Universidade Federal da Bahia, Salvador, Brazil
- Instituto Nacional de Ciência e Tecnologia em Estudos Interdisciplinares e Transdisciplinares em Ecologia e Evolução (IN-TREE), Salvador, Brazil
| | | | | | | | | | | | - Philip Cooper
- Fundacion Ecuatoriana Para Investigacion en Salud, Quito, Ecuador
- Universidad Internacional del Ecuador, Quito, Ecuador
- St George’s University of London, London, United Kingdom
| | - Collin Brooks
- Centre for Public Health Research, Massey University, Wellington, New Zealand
| | - Lucy Pembrey
- London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Steven Taylor
- College of Medicine and Public Health, Flinders University, Adelaide, Australia
| | - Jeroen Douwes
- Centre for Public Health Research, Massey University, Wellington, New Zealand
| | - Álvaro A. Cruz
- Fundação ProAR Salvador, Salvador, Brazil
- Faculdade de Medicina, Universidade Federal da Bahia, Salvador, Brazil
| | - Mauricio L. Barreto
- Centro de Integração de Dados e Conhecimentos para Saúde, Fiocruz, Salvador, Brazil
| | - Neil Pearce
- Centre for Public Health Research, Massey University, Wellington, New Zealand
- London School of Hygiene and Tropical Medicine, London, United Kingdom
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Chuandong Z, Hu J, Li J, Wu Y, Wu C, Lai G, Shen H, Wu F, Tao C, Liu S, Zhang W, Shao H. Distribution and roles of Ligilactobacillus murinus in hosts. Microbiol Res 2024; 282:127648. [PMID: 38367479 DOI: 10.1016/j.micres.2024.127648] [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: 08/30/2023] [Revised: 10/26/2023] [Accepted: 02/10/2024] [Indexed: 02/19/2024]
Abstract
Ligilactobacillus murinus, a member of the Ligilactobacillus genus, holds significant potential as a probiotic. While research on Ligilactobacillus murinus has been relatively limited compared to well-studied probiotic lactic acid bacteria such as Limosilactobacillus reuteri and Lactobacillus gasseri, a mounting body of evidence highlights its extensive involvement in host intestinal metabolism and immune activities. Moreover, its abundance exhibits a close correlation with intestinal health. Notably, beyond the intestinal context, Ligilactobacillus murinus is gaining recognition for its contributions to metabolism and regulation in the oral cavity, lungs, and vagina. As such, Ligilactobacillus murinus emerges as a potential probiotic candidate with a pivotal role in supporting host well-being. This review delves into studies elucidating the multifaceted roles of Ligilactobacillus murinus. It also examines its medicinal potential and associated challenges, underscoring the imperative to delve deeper into unraveling the mechanisms of its actions and exploring its health applications.
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Affiliation(s)
- Zhou Chuandong
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Jicong Hu
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Jiawen Li
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Yuting Wu
- School of Clinical Medicine, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Chan Wu
- School of Clinical Medicine, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Guanxi Lai
- School of Clinical Pharmacy, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Han Shen
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Fenglin Wu
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Changli Tao
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Song Liu
- School of Clinical Pharmacy, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China
| | - Wenfeng Zhang
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China.
| | - Hongwei Shao
- School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, Guangdong, PR China.
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25
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Siegel NA, Jimenez MT, Rocha CS, Rolston M, Dandekar S, Solnick JV, Miller LA. Helicobacter pylori infection in infant rhesus macaque monkeys is associated with an altered lung and oral microbiome. Sci Rep 2024; 14:9998. [PMID: 38693196 PMCID: PMC11063185 DOI: 10.1038/s41598-024-59514-5] [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: 08/24/2023] [Accepted: 04/11/2024] [Indexed: 05/03/2024] Open
Abstract
It is estimated that more than half of the world population has been infected with Helicobacter pylori. Most newly acquired H. pylori infections occur in children before 10 years of age. We hypothesized that early life H. pylori infection could influence the composition of the microbiome at mucosal sites distant to the stomach. To test this hypothesis, we utilized the infant rhesus macaque monkey as an animal model of natural H. pylori colonization to determine the impact of infection on the lung and oral microbiome during a window of postnatal development. From a cohort of 4-7 month-old monkeys, gastric biopsy cultures identified 44% of animals infected by H. pylori. 16S ribosomal RNA gene sequencing of lung washes and buccal swabs from animals showed distinct profiles for the lung and oral microbiome, independent of H. pylori infection. In order of relative abundance, the lung microbiome was dominated by the phyla Proteobacteria, Firmicutes, Bacteroidota, Fusobacteriota, Campilobacterota and Actinobacteriota while the oral microbiome was dominated by Proteobacteria, Firmicutes, Bacteroidota, and Fusobacteriota. In comparison to the oral cavity, the lung was composed of more genera and species that significantly differed by H. pylori status, with a total of 6 genera and species that were increased in H. pylori negative infant monkey lungs. Lung, but not plasma IL-8 concentration was also associated with gastric H. pylori load and lung microbial composition. We found the infant rhesus macaque monkey lung harbors a microbiome signature that is distinct from that of the oral cavity during postnatal development. Gastric H. pylori colonization and IL-8 protein were linked to the composition of microbial communities in the lung and oral cavity. Collectively, these findings provide insight into how H. pylori infection might contribute to the gut-lung axis during early childhood and modulate future respiratory health.
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Affiliation(s)
- Noah A Siegel
- California National Primate Research Center, University of California Davis, Davis, CA, USA
| | - Monica T Jimenez
- California National Primate Research Center, University of California Davis, Davis, CA, USA
| | - Clarissa Santos Rocha
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA, USA
| | - Matthew Rolston
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA, USA
| | - Satya Dandekar
- California National Primate Research Center, University of California Davis, Davis, CA, USA
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA, USA
| | - Jay V Solnick
- California National Primate Research Center, University of California Davis, Davis, CA, USA
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA, USA
| | - Lisa A Miller
- California National Primate Research Center, University of California Davis, Davis, CA, USA.
- Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California Davis, Davis, CA, USA.
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Pei G, Guo L, Liang S, Chen F, Ma N, Bai J, Deng J, Li M, Qin C, Feng T, He Z. Long-Term Erythromycin Treatment Alters the Airway and Gut Microbiota: Data from Chronic Obstructive Pulmonary Disease Patients and Mice with Emphysema. Respiration 2024:1-19. [PMID: 38663359 DOI: 10.1159/000538911] [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: 06/23/2023] [Accepted: 04/10/2024] [Indexed: 06/20/2024] Open
Abstract
INTRODUCTION Although long-term macrolide antibiotics could reduce the recurrent exacerbation of chronic obstructive pulmonary disease (COPD), the side effect of bacterial resistance and the impact on the microbiota remain concerning. We investigated the influence of long-term erythromycin treatment on the airway and gut microbiota in mice with emphysema and patients with COPD. METHODS We conducted 16S rRNA gene sequencing to explore the effect of erythromycin treatment on the lung and gut microbiota in mice with emphysema. Liquid chromatography-mass spectrometry was used for lung metabolomics. A randomized controlled trial was performed to investigate the effect of 48-week erythromycin treatment on the airway and gut microbiota in COPD patients. RESULTS The mouse lung and gut microbiota were disrupted after cigarette smoke exposure. Erythromycin treatment depleted harmful bacteria and altered lung metabolism. Erythromycin treatment did not alter airway or gut microbial diversity in COPD patients. It reduced the abundance of pathogens, such as Burkholderia, in the airway of COPD patients and increased levels of symbiotic bacteria, such as Prevotella and Veillonella. The proportions of Blautia, Ruminococcus, and Lachnospiraceae in the gut were increased in COPD patients after erythromycin treatment. The time to the first exacerbation following treatment was significantly longer in the erythromycin treatment group than in the COPD group. CONCLUSION Long-term erythromycin treatment reduces airway and gut microbe abundance in COPD patients but does not affect microbial diversity and restores microbiota balance in COPD patients by reducing the abundance of pathogenic bacteria.
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Affiliation(s)
- Guangsheng Pei
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, China
| | - Liyan Guo
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Siqiao Liang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Fugang Chen
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Nan Ma
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jing Bai
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jingmin Deng
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Meihua Li
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Chunhai Qin
- Department of Pulmonary and Critical Care Medicine, Guiping People's Hospital, Guiping, China
| | - Tao Feng
- Department of Pulmonary and Critical Care Medicine, Wuming Hospital of Guangxi Medical University, Nanning, China
| | - Zhiyi He
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
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27
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Lipinksi JH, Ranjan P, Dickson RP, O’Dwyer DN. The Lung Microbiome. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:1269-1275. [PMID: 38560811 PMCID: PMC11073614 DOI: 10.4049/jimmunol.2300716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/01/2024] [Indexed: 04/04/2024]
Abstract
Although the lungs were once considered a sterile environment, advances in sequencing technology have revealed dynamic, low-biomass communities in the respiratory tract, even in health. Key features of these communities-composition, diversity, and burden-are consistently altered in lung disease, associate with host physiology and immunity, and can predict clinical outcomes. Although initial studies of the lung microbiome were descriptive, recent studies have leveraged advances in technology to identify metabolically active microbes and potential associations with their immunomodulatory by-products and lung disease. In this brief review, we discuss novel insights in airway disease and parenchymal lung disease, exploring host-microbiome interactions in disease pathogenesis. We also discuss complex interactions between gut and oropharyngeal microbiota and lung immunobiology. Our advancing knowledge of the lung microbiome will provide disease targets in acute and chronic lung disease and may facilitate the development of new therapeutic strategies.
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Affiliation(s)
- Jay H. Lipinksi
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Piyush Ranjan
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
- Dept. of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
| | - Robert P. Dickson
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
- Dept. of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
- Weil Institute for Critical Care Research and Innovation, Ann Arbor, MI, USA
| | - David N. O’Dwyer
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
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28
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Friaza V, Rojas P, de la Horra C, García E, Morilla R, Pavón A, de Armas Y, Vallejo-Vaz AJ, Salsoso R, Medrano FJ, Calderón EJ. Fungal microbiota in newborn infants with and without respiratory distress syndrome. PLoS One 2024; 19:e0302027. [PMID: 38598489 PMCID: PMC11006121 DOI: 10.1371/journal.pone.0302027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 03/26/2024] [Indexed: 04/12/2024] Open
Abstract
BACKGROUND Pneumocytis jirovecii infection in preterm newborns has recently been associated with neonatal respiratory distress syndrome and bronchopulmonary dysplasia. Changes in the bacterial microbiota of the airways have also been described in infants with bronchopulmonary dysplasia. However, until now there has been no information on the airway mycobiota in newborns. The purpose of this study was to describe the airway mycobiota in term and preterm newborns and its possible association with respiratory distress syndrome. METHODS Twenty-six matched preterm newborns with and without respiratory distress syndrome were studied, as well as 13 term babies. The identification of the fungal microbiota was carried out using molecular procedures in aspirated nasal samples at birth. RESULTS The ascomycota phylum was identified in 89.7% of newborns, while the basidiomycota phylum was found in 33.3%. Cladosporium was the predominant genus in both term and preterm infants 38.4% vs. 73% without statistical differences. Candida sake and Pneumocystis jirovecii were only found in preterm infants, suggesting a potential relationship with the risk of prematurity. CONCLUSIONS This is the first report to describe the fungal microbiota of the airways in term and preterm infants with and without respiratory distress syndrome. Although no differences have been observed, the number of cases analyzed could be small to obtain conclusive results, and more studies are needed to understand the role of the fungal microbiota of the airways in neonatal respiratory pathology.
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Affiliation(s)
- Vicente Friaza
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública, Madrid, Spain
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/Consejo Superior de Investigaciones Científicas/Universidad de Sevilla, Seville, Spain
| | - Pilar Rojas
- Neonatology Unit, Virgen del Rocío University Children’s Hospital, Seville, Spain
| | - Carmen de la Horra
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/Consejo Superior de Investigaciones Científicas/Universidad de Sevilla, Seville, Spain
| | - Elisa García
- Neonatology Unit, Virgen del Rocío University Children’s Hospital, Seville, Spain
| | - Rubén Morilla
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/Consejo Superior de Investigaciones Científicas/Universidad de Sevilla, Seville, Spain
- Departamento de Enfermería, Universidad de Sevilla, Seville, Spain
| | - Antonio Pavón
- Neonatology Unit, Virgen del Rocío University Children’s Hospital, Seville, Spain
| | - Yaxsier de Armas
- Department of Clinical Microbiology Diagnostic, Hospital Center of Institute of Tropical Medicine “Pedro Kourí”, Havana, Cuba
- Pathology Department, Hospital Center of Institute of Tropical Medicine ʺPedro Kouríʺ, Havana, Cuba
| | - Antonio J. Vallejo-Vaz
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública, Madrid, Spain
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/Consejo Superior de Investigaciones Científicas/Universidad de Sevilla, Seville, Spain
- Departamento de Medicina, Hospital Universitario Virgen del Rocío, Facultad de Medicina, Universidad de Sevilla, Seville, Spain
| | - Rocío Salsoso
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/Consejo Superior de Investigaciones Científicas/Universidad de Sevilla, Seville, Spain
| | - Francisco J. Medrano
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública, Madrid, Spain
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/Consejo Superior de Investigaciones Científicas/Universidad de Sevilla, Seville, Spain
- Departamento de Medicina, Hospital Universitario Virgen del Rocío, Facultad de Medicina, Universidad de Sevilla, Seville, Spain
| | - Enrique J. Calderón
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública, Madrid, Spain
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/Consejo Superior de Investigaciones Científicas/Universidad de Sevilla, Seville, Spain
- Departamento de Medicina, Hospital Universitario Virgen del Rocío, Facultad de Medicina, Universidad de Sevilla, Seville, Spain
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Marrella V, Nicchiotti F, Cassani B. Microbiota and Immunity during Respiratory Infections: Lung and Gut Affair. Int J Mol Sci 2024; 25:4051. [PMID: 38612860 PMCID: PMC11012346 DOI: 10.3390/ijms25074051] [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: 02/02/2024] [Revised: 03/29/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024] Open
Abstract
Bacterial and viral respiratory tract infections are the most common infectious diseases, leading to worldwide morbidity and mortality. In the past 10 years, the importance of lung microbiota emerged in the context of pulmonary diseases, although the mechanisms by which it impacts the intestinal environment have not yet been fully identified. On the contrary, gut microbial dysbiosis is associated with disease etiology or/and development in the lung. In this review, we present an overview of the lung microbiome modifications occurring during respiratory infections, namely, reduced community diversity and increased microbial burden, and of the downstream consequences on host-pathogen interaction, inflammatory signals, and cytokines production, in turn affecting the disease progression and outcome. Particularly, we focus on the role of the gut-lung bidirectional communication in shaping inflammation and immunity in this context, resuming both animal and human studies. Moreover, we discuss the challenges and possibilities related to novel microbial-based (probiotics and dietary supplementation) and microbial-targeted therapies (antibacterial monoclonal antibodies and bacteriophages), aimed to remodel the composition of resident microbial communities and restore health. Finally, we propose an outlook of some relevant questions in the field to be answered with future research, which may have translational relevance for the prevention and control of respiratory infections.
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Affiliation(s)
- Veronica Marrella
- UOS Milan Unit, Istituto di Ricerca Genetica e Biomedica (IRGB), CNR, 20138 Milan, Italy;
- IRCCS Humanitas Research Hospital, 20089 Milan, Italy
| | - Federico Nicchiotti
- Department of Medical Biotechnologies and Translational Medicine, Università degli Studi di Milano, 20089 Milan, Italy;
| | - Barbara Cassani
- IRCCS Humanitas Research Hospital, 20089 Milan, Italy
- Department of Medical Biotechnologies and Translational Medicine, Università degli Studi di Milano, 20089 Milan, Italy;
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30
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Zhang L, Liu X, Fan B, Chen J, Chen J, Li Q, Wu X. Microbiome features in bronchoalveolar lavage fluid of patients with idiopathic inflammatory myopathy-related interstitial lung disease. Front Med (Lausanne) 2024; 11:1338947. [PMID: 38633306 PMCID: PMC11021725 DOI: 10.3389/fmed.2024.1338947] [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: 11/15/2023] [Accepted: 03/08/2024] [Indexed: 04/19/2024] Open
Abstract
Background Interstitial lung disease (ILD) is a common complication of idiopathic inflammatory myopathy (IIM), which is one of the connective tissue diseases (CTD). It can lead to poor prognosis and increased mortality. However, the distribution and role of the lower respiratory tract (LRT) microbiome in patients with IIM-ILD remains unclear. This study aimed to investigate the microbial diversity and community differences in bronchoalveolar lavage fluid (BALF) in patients with IIM-ILD. Methods From 28 June 2021 to 26 December 2023, 51 individual BALF samples were enrolled, consisting of 20 patients with IIM-ILD, 16 patients with other CTD-ILD (including 8 patients with SLE and 8 with RA) and 15 patients with CAP. The structure and function of microbiota in BALF were identified by metagenomic next-generation sequencing (mNGS). Results The community evenness of LRT microbiota within the IIM-ILD group was marginally lower compared to the other CTD-ILD and CAP groups. Nonetheless, there were no noticeable differences. The species community structure was similar among the three groups, based on the Bray-Curtis distance between the samples. At the level of genus, the IIM-ILD group displayed a considerably higher abundance of Pseudomonas and Corynebacterium in comparison to the CAP group (p < 0.01, p < 0.05). At the species level, we found that the relative abundance of Pseudomonas aeruginosa increased significantly in the IIM-ILD group compared to the CAP group (p < 0.05). Additionally, the relative abundance of Prevotella pallens was significantly higher in other CTD-ILD groups compared to that in the IIM-ILD group (p < 0.05). Of all the clinical indicators examined in the correlation analysis, ferritin level demonstrated the strongest association with LRT flora, followed by Serum interleukin-6 level (p < 0.05). Conclusion Our research has identified particular LRT microorganisms that were found to be altered in the IIM-ILD group and were significantly associated with immune function and inflammatory markers in patients. The lower respiratory tract microbiota has potential in the diagnosis and treatment of IIM-ILD.
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Affiliation(s)
- Liyan Zhang
- Department of Respiratory and Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xueqing Liu
- Department of Respiratory and Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bijun Fan
- Department of Respiratory and Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiajun Chen
- Department of Respiratory and Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jie Chen
- Department of Rheumatology Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiuhong Li
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xueling Wu
- Department of Respiratory and Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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31
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Perdijk O, Azzoni R, Marsland BJ. The microbiome: an integral player in immune homeostasis and inflammation in the respiratory tract. Physiol Rev 2024; 104:835-879. [PMID: 38059886 DOI: 10.1152/physrev.00020.2023] [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: 05/02/2023] [Revised: 11/07/2023] [Accepted: 11/30/2023] [Indexed: 12/08/2023] Open
Abstract
The last decade of microbiome research has highlighted its fundamental role in systemic immune and metabolic homeostasis. The microbiome plays a prominent role during gestation and into early life, when maternal lifestyle factors shape immune development of the newborn. Breast milk further shapes gut colonization, supporting the development of tolerance to commensal bacteria and harmless antigens while preventing outgrowth of pathogens. Environmental microbial and lifestyle factors that disrupt this process can dysregulate immune homeostasis, predisposing infants to atopic disease and childhood asthma. In health, the low-biomass lung microbiome, together with inhaled environmental microbial constituents, establishes the immunological set point that is necessary to maintain pulmonary immune defense. However, in disease perturbations to immunological and physiological processes allow the upper respiratory tract to act as a reservoir of pathogenic bacteria, which can colonize the diseased lung and cause severe inflammation. Studying these host-microbe interactions in respiratory diseases holds great promise to stratify patients for suitable treatment regimens and biomarker discovery to predict disease progression. Preclinical studies show that commensal gut microbes are in a constant flux of cell division and death, releasing microbial constituents, metabolic by-products, and vesicles that shape the immune system and can protect against respiratory diseases. The next major advances may come from testing and utilizing these microbial factors for clinical benefit and exploiting the predictive power of the microbiome by employing multiomics analysis approaches.
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Affiliation(s)
- Olaf Perdijk
- Department of Immunology, School of Translational Science, Monash University, Melbourne, Victoria, Australia
| | - Rossana Azzoni
- Department of Immunology, School of Translational Science, Monash University, Melbourne, Victoria, Australia
| | - Benjamin J Marsland
- Department of Immunology, School of Translational Science, Monash University, Melbourne, Victoria, Australia
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32
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Luo L, Tang J, Du X, Li N. Chronic obstructive pulmonary disease and the airway microbiome: A review for clinicians. Respir Med 2024; 225:107586. [PMID: 38460708 DOI: 10.1016/j.rmed.2024.107586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 12/30/2023] [Accepted: 03/04/2024] [Indexed: 03/11/2024]
Abstract
Chronic obstructive pulmonary disease (COPD) is a complex heterogeneous disease characterized by progressive airflow limitation and chronic inflammation. The progressive development and long-term repeated acute exacerbation of COPD make many patients still unable to control the deterioration of the disease after active treatment, and even eventually lead to death. An increasing number of studies have shown that the occurrence and development of COPD are closely related to the composition and changes of airway microbiome. This article reviews the interaction between COPD and airway microbiome, the potential mechanisms of interaction, and the treatment methods related to microbiome. We elaborated the internal correlation between airway microbiome and different stages of COPD, inflammatory endotypes, glucocorticoid and antibiotic treatment, analyze the pathophysiological mechanisms such as the "vicious cycle" hypothesis, abnormal inflammation-immune response of the host and the "natural selection" of COPD to airway microbiome, introduce the treatment of COPD related to microbiome and emphasize the predictive value of airway microbiome for the progression, exacerbation and prognosis of COPD, as well as the guiding role for clinical management of patients, in order to provide a new perspective for exploring the pathogenesis of COPD, and also provide clues and guidance for finding new treatment targets.
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Affiliation(s)
- Lingxin Luo
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
| | - Junli Tang
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
| | - Xianzhi Du
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
| | - Na Li
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China.
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33
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Ziaka M, Exadaktylos A. Pathophysiology of acute lung injury in patients with acute brain injury: the triple-hit hypothesis. Crit Care 2024; 28:71. [PMID: 38454447 PMCID: PMC10918982 DOI: 10.1186/s13054-024-04855-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Accepted: 03/01/2024] [Indexed: 03/09/2024] Open
Abstract
It has been convincingly demonstrated in recent years that isolated acute brain injury (ABI) may cause severe dysfunction of peripheral extracranial organs and systems. Of all potential target organs and systems, the lung appears to be the most vulnerable to damage after ABI. The pathophysiology of the bidirectional brain-lung interactions is multifactorial and involves inflammatory cascades, immune suppression, and dysfunction of the autonomic system. Indeed, the systemic effects of inflammatory mediators in patients with ABI create a systemic inflammatory environment ("first hit") that makes extracranial organs vulnerable to secondary procedures that enhance inflammation, such as mechanical ventilation (MV), surgery, and infections ("second hit"). Moreover, accumulating evidence supports the knowledge that gut microbiota constitutes a critical superorganism and an organ on its own, potentially modifying various physiological functions of the host. Furthermore, experimental and clinical data suggest the existence of a communication network among the brain, gastrointestinal tract, and its microbiome, which appears to regulate immune responses, gastrointestinal function, brain function, behavior, and stress responses, also named the "gut-microbiome-brain axis." Additionally, recent research evidence has highlighted a crucial interplay between the intestinal microbiota and the lungs, referred to as the "gut-lung axis," in which alterations during critical illness could result in bacterial translocation, sustained inflammation, lung injury, and pulmonary fibrosis. In the present work, we aimed to further elucidate the pathophysiology of acute lung injury (ALI) in patients with ABI by attempting to develop the "double-hit" theory, proposing the "triple-hit" hypothesis, focused on the influence of the gut-lung axis on the lung. Particularly, we propose, in addition to sympathetic hyperactivity, blast theory, and double-hit theory, that dysbiosis and intestinal dysfunction in the context of ABI alter the gut-lung axis, resulting in the development or further aggravation of existing ALI, which constitutes the "third hit."
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Affiliation(s)
- Mairi Ziaka
- Clinic for Geriatric Medicine, Center for Geriatric Medicine and Rehabilitation, Kantonsspital Baselland, Bruderholz, Switzerland.
- Department of Emergency Medicine, Inselspital, University Hospital, University of Bern, Bern, Switzerland.
| | - Aristomenis Exadaktylos
- Department of Emergency Medicine, Inselspital, University Hospital, University of Bern, Bern, Switzerland
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34
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Oda H, Tanaka S, Chen-Yoshikawa TF, Morimura Y, Yamada Y, Yutaka Y, Nakajima D, Hamaji M, Ohsumi A, Menju T, Nagao M, Date H. Impact of perioperative airway pathogens on living-donor lobar lung transplantation outcomes. Surg Today 2024; 54:266-274. [PMID: 37540232 DOI: 10.1007/s00595-023-02730-9] [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: 04/14/2023] [Accepted: 06/27/2023] [Indexed: 08/05/2023]
Abstract
PURPOSE To elucidate the clinical impact of pathogenic organism (PO) positivity early after transplantation, we evaluated the impact of perioperative airway POs on outcomes after living-donor lobar lung transplantation (LDLLT), where the graft airway is supposed to be sterile from a healthy donor. METHOD A retrospective review of 67 adult LDLLT procedures involving 132 living donors was performed. Presence of POs in the recipients' airways was evaluated preoperatively and postoperatively in intensive-care units. RESULTS POs were detected preoperatively in 13 (19.4%) recipients. No POs were isolated from the donor airways at transplantation. POs were detected in 39 (58.2%) recipients postoperatively; most were different from the POs isolated preoperatively. Postoperative PO isolation was not associated with short-term outcomes other than prolonged postoperative ventilation. The 5-year overall survival was significantly better in the PO-negative group than in the PO-positive group (89.1% vs. 63.7%, P = 0.014). In the multivariate analysis, advanced age (hazard ratio [HR]: 1.041 per 1-year increase, P = 0.033) and posttransplant PO positivity in the airway (HR: 3.684, P = 0.019) significantly affected the survival. CONCLUSIONS The airways of the living-donor grafts were microbiologically sterile. PO positivity in the airway early after transplantation negatively impacted long-term outcomes.
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Affiliation(s)
- Hiromi Oda
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto City, Kyoto, 606-8507, Japan
- Department of Thoracic Surgery, Tazuke Kofukai, Medical Research Institute, Kitano Hospital, 2-4-20 Ohgimachi, Kita-Ku, Osaka City, Osaka, 530-8480, Japan
| | - Satona Tanaka
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto City, Kyoto, 606-8507, Japan.
| | - Toyofumi F Chen-Yoshikawa
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto City, Kyoto, 606-8507, Japan
- Department of Thoracic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya City, Aichi, 466-8560, Japan
| | - Yuki Morimura
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto City, Kyoto, 606-8507, Japan
| | - Yoshito Yamada
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto City, Kyoto, 606-8507, Japan
| | - Yojiro Yutaka
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto City, Kyoto, 606-8507, Japan
| | - Daisuke Nakajima
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto City, Kyoto, 606-8507, Japan
| | - Masatsugu Hamaji
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto City, Kyoto, 606-8507, Japan
| | - Akihiro Ohsumi
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto City, Kyoto, 606-8507, Japan
| | - Toshi Menju
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto City, Kyoto, 606-8507, Japan
| | - Miki Nagao
- Department of Infection Control and Prevention, Kyoto University Hospital, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto City, Kyoto, 606-8507, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto City, Kyoto, 606-8507, Japan
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35
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Smulders T, Van Der Schee MP, Maitland-Van Der Zee AH, Dikkers FG, Van Drunen CM. Influence of the gut and airway microbiome on asthma development and disease. Pediatr Allergy Immunol 2024; 35:e14095. [PMID: 38451070 DOI: 10.1111/pai.14095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 02/07/2024] [Indexed: 03/08/2024]
Abstract
There are ample data to suggest that early-life dysbiosis of both the gut and/or airway microbiome can predispose a child to develop along a trajectory toward asthma. Although individual studies show clear associations between dysbiosis and asthma development, it is less clear what (collection of) bacterial species is mechanistically responsible for the observed effects. This is partly due to issues related to the asthma diagnosis and the broad spectrum of anatomical sites, sample techniques, and analysis protocols that are used in different studies. Moreover, there is limited attention for potential differences in the genetics of individuals that would affect the outcome of the interaction between the environment and that individual. Despite these challenges, the first bacterial components were identified that are able to affect the transcriptional state of human cells, ergo the immune system. Such molecules could in the future be the basis for intervention studies that are now (necessarily) restricted to a limited number of bacterial species. For this transition, it might be prudent to develop an ex vivo human model of a local mucosal immune system to better and safer explore the impact of such molecules. With this approach, we might move beyond association toward understanding of causality.
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Affiliation(s)
- Tamar Smulders
- Department of Otorhinolaryngology/Head and Neck Surgery, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Department of Paediatric Pulmonary Medicine, Amsterdam UMC location University of Amsterdam, Amsterdam, Netherlands
| | - Marc P Van Der Schee
- Department of Paediatric Pulmonary Medicine, Amsterdam UMC location University of Amsterdam, Amsterdam, Netherlands
| | - Anke H Maitland-Van Der Zee
- Department of Paediatric Pulmonary Medicine, Amsterdam UMC location University of Amsterdam, Amsterdam, Netherlands
- Department of Pulmonary Medicine, Amsterdam UMC location University of Amsterdam, Amsterdam, Netherlands
| | - Frederik G Dikkers
- Department of Otorhinolaryngology/Head and Neck Surgery, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Cornelis M Van Drunen
- Department of Otorhinolaryngology/Head and Neck Surgery, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
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Xuan L, Ren L, Zhang W, Du P, Li B, An Z. Formaldehyde aggravates airway inflammation through induction of glycolysis in an experimental model of asthma exacerbated by lipopolysaccharide. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168947. [PMID: 38043820 DOI: 10.1016/j.scitotenv.2023.168947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 11/25/2023] [Accepted: 11/25/2023] [Indexed: 12/05/2023]
Abstract
Formaldehyde (FA) exposure has been reported to induce or aggravate allergic asthma. Infection is also a potential risk factor for the onset and aggravation of asthma. However, no study has addressed the effects of FA exposure on asthmatic patients with respiratory infection. FA is ubiquitous in environment and respiratory infections are common in clinics. Therefore, it is necessary to explore whether FA exposure leads to the further worsening of symptoms in asthma patients with existing respiratory infection. In the present study, ovalbumin (OVA) was used to establish the murine asthma model. Lipopolysaccharide (LPS) was intratracheal administrated to mimic asthma with respiratory infection. The mice were exposed to 0.5 mg/m3 FA. FA exposure did not induce a significant aggravation on OVA induced allergic asthma. However, the lung function of specific airway resistance (sRaw), histological changes and cytokines production were greatly aggravated by FA exposure in OVA/LPS induced murine asthma model. Monocyte-derived macrophages (MDMs) were isolated from asthmatic patients. Exposure of MDMs to FA and LPS resulted in increased TNF-α, IL-6, IL-1β, and nitric oxide (NO) production. Lactate produciton and lactate dehydrogenase A (LDHA) expression were found to be upregulated by FA in OVA/LPS induced asthmatic mice and LPS stimulated MDMs. Furthermore, glycolysis inhibitor 2-Deoxy-d-glucose attenuated FA and LPS induced TNF-α, IL-6, IL-1β, and NO production. We conclude that FA exposure can lead to the aggravation of allergic asthma with infection through induction of glycolysis. This study could offer some new insight into how FA promotes asthma development.
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Affiliation(s)
- Lingling Xuan
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, No.8 Gongti South Road, Chaoyang District, Beijing 100020, China
| | - Lulu Ren
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, No.8 Gongti South Road, Chaoyang District, Beijing 100020, China
| | - Wen Zhang
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, No.8 Gongti South Road, Chaoyang District, Beijing 100020, China
| | - Ping Du
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, No.8 Gongti South Road, Chaoyang District, Beijing 100020, China
| | - Boyu Li
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, No.8 Gongti South Road, Chaoyang District, Beijing 100020, China
| | - Zhuoling An
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, No.8 Gongti South Road, Chaoyang District, Beijing 100020, China.
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Puiu R, Motoc NS, Lucaciu S, Ruta MV, Rajnoveanu RM, Todea DA, Man MA. The Role of Lung Microbiome in Fibrotic Interstitial Lung Disease-A Systematic Review. Biomolecules 2024; 14:247. [PMID: 38540667 PMCID: PMC10968628 DOI: 10.3390/biom14030247] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 02/11/2024] [Accepted: 02/13/2024] [Indexed: 07/23/2024] Open
Abstract
Interstitial Lung Disease (ILD) involves lung disorders marked by chronic inflammation and fibrosis. ILDs include pathologies like idiopathic pulmonary fibrosis (IPF), connective tissue disease-associated ILD (CTD-ILD), hypersensitivity pneumonitis (HP) or sarcoidosis. Existing data covers pathogenesis, diagnosis (especially using high-resolution computed tomography), and treatments like antifibrotic agents. Despite progress, ILD diagnosis and management remains challenging with significant morbidity and mortality. Recent focus is on Progressive Fibrosing ILD (PF-ILD), characterized by worsening symptoms and fibrosis on HRCT. Prevalence is around 30%, excluding IPF, with a poor prognosis. Early diagnosis is crucial for optimizing outcomes in PF-ILD individuals. The lung microbiome comprises all the microorganisms that are in the respiratory tract. Relatively recent research try to evaluate its role in respiratory disease. Healthy lungs have a diverse microbial community. An imbalance in bacterial composition, changes in bacterial metabolic activities, or changes in bacterial distribution within the lung termed dysbiosis is linked to conditions like COPD, asthma and ILDs. We conducted a systematic review of three important scientific data base using a focused search strategy to see how the lung microbiome is involved in the progression of ILDs. Results showed that some differences in the composition and quality of the lung microbiome exist in ILDs that show progressive fibrosing phenotype. The results seem to suggest that the lung microbiota could be involved in ILD progression, but more studies showing its exact pathophysiological mechanisms are needed.
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Affiliation(s)
- Ruxandra Puiu
- Department of Medical Sciences, Pulmonology, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania or (R.P.); (S.L.); (D.A.T.); (M.A.M.)
| | - Nicoleta Stefania Motoc
- Department of Medical Sciences, Pulmonology, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania or (R.P.); (S.L.); (D.A.T.); (M.A.M.)
| | - Sergiu Lucaciu
- Department of Medical Sciences, Pulmonology, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania or (R.P.); (S.L.); (D.A.T.); (M.A.M.)
| | - Maria Victoria Ruta
- I Department of Pulmonology, “Leon Daniello” Clinical Hospital of Pulmonology, 400371 Cluj-Napoca, Romania;
| | - Ruxandra-Mioara Rajnoveanu
- Department of Palliative Medicine, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania;
| | - Doina Adina Todea
- Department of Medical Sciences, Pulmonology, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania or (R.P.); (S.L.); (D.A.T.); (M.A.M.)
| | - Milena Adina Man
- Department of Medical Sciences, Pulmonology, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania or (R.P.); (S.L.); (D.A.T.); (M.A.M.)
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Cuthbertson L, Löber U, Ish-Horowicz JS, McBrien CN, Churchward C, Parker JC, Olanipekun MT, Burke C, McGowan A, Davies GA, Lewis KE, Hopkin JM, Chung KF, O'Carroll O, Faul J, Creaser-Thomas J, Andrews M, Ghosal R, Piatek S, Willis-Owen SAG, Bartolomaeus TUP, Birkner T, Dwyer S, Kumar N, Turek EM, William Musk A, Hui J, Hunter M, James A, Dumas ME, Filippi S, Cox MJ, Lawley TD, Forslund SK, Moffatt MF, Cookson WOC. Genomic attributes of airway commensal bacteria and mucosa. Commun Biol 2024; 7:171. [PMID: 38347162 PMCID: PMC10861553 DOI: 10.1038/s42003-024-05840-3] [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: 01/30/2023] [Accepted: 01/22/2024] [Indexed: 02/15/2024] Open
Abstract
Microbial communities at the airway mucosal barrier are conserved and highly ordered, in likelihood reflecting co-evolution with human host factors. Freed of selection to digest nutrients, the airway microbiome underpins cognate management of mucosal immunity and pathogen resistance. We show here the initial results of systematic culture and whole-genome sequencing of the thoracic airway bacteria, identifying 52 novel species amongst 126 organisms that constitute 75% of commensals typically present in heathy individuals. Clinically relevant genes encode antimicrobial synthesis, adhesion and biofilm formation, immune modulation, iron utilisation, nitrous oxide (NO) metabolism and sphingolipid signalling. Using whole-genome content we identify dysbiotic features that may influence asthma and chronic obstructive pulmonary disease. We match isolate gene content to transcripts and metabolites expressed late in airway epithelial differentiation, identifying pathways to sustain host interactions with microbiota. Our results provide a systematic basis for decrypting interactions between commensals, pathogens, and mucosa in lung diseases of global significance.
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Affiliation(s)
- Leah Cuthbertson
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Ulrike Löber
- Max Delbrück Center for Molecular Medicine (MDC), 13125, Berlin, Germany
- Experimental and Clinical Research Center, A Cooperation of Charité-Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site, 10785, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
| | - Jonathan S Ish-Horowicz
- National Heart and Lung Institute, Imperial College London, London, UK
- Department of Mathematics, Imperial College London, London, UK
| | - Claire N McBrien
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Colin Churchward
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Jeremy C Parker
- National Heart and Lung Institute, Imperial College London, London, UK
| | | | - Conor Burke
- Department of Respiratory Medicine, Connolly Hospital, Dublin, Ireland
| | - Aisling McGowan
- Department of Respiratory Medicine, Connolly Hospital, Dublin, Ireland
| | - Gwyneth A Davies
- Population Data Science and Health Data Research UK BREATHE Hub, Swansea University Medical School, Swansea University, Swansea, UK
- College of Medicine, Institute of Life Science, Swansea University, Swansea, UK
| | - Keir E Lewis
- College of Medicine, Institute of Life Science, Swansea University, Swansea, UK
- Respiratory Medicine, Hywel Dda University Health Board, Llanelli, UK
| | - Julian M Hopkin
- College of Medicine, Institute of Life Science, Swansea University, Swansea, UK
| | - Kian Fan Chung
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Orla O'Carroll
- Department of Respiratory Medicine, Connolly Hospital, Dublin, Ireland
| | - John Faul
- Department of Respiratory Medicine, Connolly Hospital, Dublin, Ireland
| | - Joy Creaser-Thomas
- College of Medicine, Institute of Life Science, Swansea University, Swansea, UK
| | - Mark Andrews
- Respiratory Medicine, Hywel Dda University Health Board, Llanelli, UK
| | - Robin Ghosal
- Respiratory Medicine, Hywel Dda University Health Board, Llanelli, UK
| | - Stefan Piatek
- National Heart and Lung Institute, Imperial College London, London, UK
| | | | - Theda U P Bartolomaeus
- Max Delbrück Center for Molecular Medicine (MDC), 13125, Berlin, Germany
- Experimental and Clinical Research Center, A Cooperation of Charité-Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site, 10785, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
| | - Till Birkner
- Max Delbrück Center for Molecular Medicine (MDC), 13125, Berlin, Germany
- Experimental and Clinical Research Center, A Cooperation of Charité-Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125, Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
| | - Sarah Dwyer
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Nitin Kumar
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | - Elena M Turek
- National Heart and Lung Institute, Imperial College London, London, UK
| | - A William Musk
- School of Population and Global Health, The University of Western Australia, Perth, WA, Australia
- Busselton Population Medical Research Institute, Sir Charles Gairdner Hospital, Perth, WA, Australia
- Department of Respiratory Medicine Sir Charles Gairdner Hospital, Perth, WA, Australia
| | - Jennie Hui
- School of Population and Global Health, The University of Western Australia, Perth, WA, Australia
- Busselton Population Medical Research Institute, Sir Charles Gairdner Hospital, Perth, WA, Australia
| | - Michael Hunter
- School of Population and Global Health, The University of Western Australia, Perth, WA, Australia
- Busselton Population Medical Research Institute, Sir Charles Gairdner Hospital, Perth, WA, Australia
| | - Alan James
- School of Population and Global Health, The University of Western Australia, Perth, WA, Australia
- Department of Respiratory Medicine Sir Charles Gairdner Hospital, Perth, WA, Australia
- Department of Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Perth, WA, Australia
| | - Marc-Emmanuel Dumas
- National Heart and Lung Institute, Imperial College London, London, UK
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
- U1283 INSERM / UMR8199 CNRS, Institut Pasteur de Lille, Lille University Hospital, European Genomic Institute for Diabetes, University of Lille, Lille, France
- McGill Genome Centre, McGill University, Montréal, QC, Canada
| | - Sarah Filippi
- Department of Mathematics, Imperial College London, London, UK
| | - Michael J Cox
- University of Birmingham College of Medical and Dental Sciences, 150183, Institute of Microbiology and Infection, Birmingham, UK
| | - Trevor D Lawley
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | - Sofia K Forslund
- Max Delbrück Center for Molecular Medicine (MDC), 13125, Berlin, Germany.
- Experimental and Clinical Research Center, A Cooperation of Charité-Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125, Berlin, Germany.
- DZHK (German Centre for Cardiovascular Research), Partner Site, 10785, Berlin, Germany.
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany.
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Structural and Computational Biology Unit, 69117, Heidelberg, Germany.
| | - Miriam F Moffatt
- National Heart and Lung Institute, Imperial College London, London, UK.
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Yadav B, Bhattacharya SS, Rosen L, Nagpal R, Yadav H, Yadav JS. Oro-Respiratory Dysbiosis and Its Modulatory Effect on Lung Mucosal Toxicity during Exposure or Co-Exposure to Carbon Nanotubes and Cigarette Smoke. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:314. [PMID: 38334585 PMCID: PMC10856953 DOI: 10.3390/nano14030314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/27/2024] [Accepted: 01/30/2024] [Indexed: 02/10/2024]
Abstract
The oro-respiratory microbiome is impacted by inhalable exposures such as smoking and has been associated with respiratory health conditions. However, the effect of emerging toxicants, particularly engineered nanoparticles, alone or in co-exposure with smoking, is poorly understood. Here, we investigated the impact of sub-chronic exposure to carbon nanotube (CNT) particles, cigarette smoke extract (CSE), and their combination. The oral, nasal, and lung microbiomes were characterized using 16S rRNA-based metagenomics. The exposures caused the following shifts in lung microbiota: CNT led to a change from Proteobacteria and Bacteroidetes to Firmicutes and Tenericutes; CSE caused a shift from Proteobacteria to Bacteroidetes; and co-exposure (CNT+CSE) had a mixed effect, maintaining higher numbers of Bacteroidetes (due to the CNT effect) and Tenericutes (due to the CSE effect) compared to the control group. Oral microbiome analysis revealed an abundance of the following genera: Acinetobacter (CNT), Staphylococcus, Aggregatibacter, Allobaculum, and Streptococcus (CSE), and Alkalibacterium (CNT+CSE). These proinflammatory microbial shifts correlated with changes in the relative expression of lung mucosal homeostasis/defense proteins, viz., aquaporin 1 (AQP-1), surfactant protein A (SP-A), mucin 5b (MUC5B), and IgA. Microbiota depletion reversed these perturbations, albeit to a varying extent, confirming the modulatory role of oro-respiratory dysbiosis in lung mucosal toxicity. This is the first demonstration of specific oro-respiratory microbiome constituents as potential modifiers of toxicant effects in exposed lungs.
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Affiliation(s)
- Brijesh Yadav
- Pulmonary Pathogenesis and Immunotoxicology Laboratory, Department of Environmental and Public Health Sciences, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0056, USA; (B.Y.)
| | - Sukanta S. Bhattacharya
- Pulmonary Pathogenesis and Immunotoxicology Laboratory, Department of Environmental and Public Health Sciences, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0056, USA; (B.Y.)
| | - Lauren Rosen
- Department of Pathology and Laboratory Medicine, University of Cincinnati, UC Health University Hospital Laboratory Medicine Building, Suite 110234 Goodman Street, Cincinnati, OH 45219-0533, USA
| | - Ravinder Nagpal
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL 32306, USA
| | - Hariom Yadav
- USF Center for Microbiome Research, Department of Neurosurgery and Brain Repair, Internal Medicine-Digestive Diseases and Nutrition, University of South Florida, Tampa, FL 33613, USA
| | - Jagjit S. Yadav
- Pulmonary Pathogenesis and Immunotoxicology Laboratory, Department of Environmental and Public Health Sciences, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0056, USA; (B.Y.)
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Cheng J, Zhou L, Wang H. Symbiotic microbial communities in various locations of the lung cancer respiratory tract along with potential host immunological processes affected. Front Cell Infect Microbiol 2024; 14:1296295. [PMID: 38371298 PMCID: PMC10873922 DOI: 10.3389/fcimb.2024.1296295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 01/18/2024] [Indexed: 02/20/2024] Open
Abstract
Lung cancer has the highest mortality rate among all cancers worldwide. The 5-year overall survival rate for non-small cell lung cancer (NSCLC) is estimated at around 26%, whereas for small cell lung cancer (SCLC), the survival rate is only approximately 7%. This disease places a significant financial and psychological burden on individuals worldwide. The symbiotic microbiota in the human body has been significantly associated with the occurrence, progression, and prognosis of various diseases, such as asthma, chronic obstructive pulmonary disease (COPD), and cystic fibrosis. Studies have demonstrated that respiratory symbiotic microorganisms and their metabolites play a crucial role in modulating immune function and contributing to the pathophysiology of lung cancer through their interactions with the host. In this review, we provide a comprehensive overview of the microbial characteristics associated with lung cancer, with a focus on the respiratory tract microbiota from different locations, including saliva, sputum, bronchoalveolar lavage fluid (BALF), bronchial brush samples, and tissue. We describe the respiratory tract microbiota's biodiversity characteristics by anatomical region, elucidating distinct pathological features, staging, metastasis, host chromosomal mutations, immune therapies, and the differentiated symbiotic microbiota under the influence of environmental factors. Our exploration investigates the intrinsic mechanisms linking the microbiota and its host. Furthermore, we have also provided a comprehensive review of the immune mechanisms by which microbiota are implicated in the development of lung cancer. Dysbiosis of the respiratory microbiota can promote or inhibit tumor progression through various mechanisms, including DNA damage and genomic instability, activation and regulation of the innate and adaptive immune systems, and stimulation of epithelial cells leading to the upregulation of carcinogenesis-related pathways.
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Affiliation(s)
- Jiuling Cheng
- Respiratory Department, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Lujia Zhou
- Henan Key Laboratory of Precision Diagnosis of Respiratory Infectious Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Zhengzhou Key Laboratory of Precision Diagnosis of Respiratory Infectious Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Huaqi Wang
- Respiratory Department, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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McKay JA, Crown M, Bashton M, Pearce D, Entwistle JA, Sangal V. Environmental microbiome in the home and daycare settings during the COVID-19 pandemic, and potential risk of non-communicable disease in children. ENVIRONMENTAL MICROBIOLOGY REPORTS 2024; 16:e13233. [PMID: 38217304 PMCID: PMC10866607 DOI: 10.1111/1758-2229.13233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 12/27/2023] [Indexed: 01/15/2024]
Abstract
An exposure to diverse microbial population early in life is important for the development of immunity against various non-communicable diseases including asthma, childhood leukaemia and other cancers. Social mixing in daycare settings helps with exposure to a variety of microbes. However, social isolation and a high emphasis on workplace hygiene during the COVID pandemic may have affected children's exposure to diverse microbiota. The structure of microbial communities and their role in developing immunity to various diseases are not well understood. In this study, we investigated the structure of microbial communities in daycare and home settings during the pandemic. Interestingly, microbial diversity was relatively higher in dust samples collected from homes, with human-associated taxa being more prevalent compared to those from daycare settings. Environmental microbes were more abundant in dust samples from daycare providers. These results potentially suggest that cleaning practices during the pandemic may have influenced the diversity and microbial abundance of the daycare samples. Several bacterial taxa detected in both the environments are known to induce anti-inflammatory and immunomodulatory responses, conferring protection from various diseases. Therefore, exposure to diverse microbial population in early childhood may play an important role in developing immunity against various non-communicable and infectious diseases.
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Affiliation(s)
- Jill A. McKay
- Faculty of Health and Life SciencesNorthumbria UniversityNewcastle upon TyneUK
| | - Matthew Crown
- Faculty of Health and Life SciencesNorthumbria UniversityNewcastle upon TyneUK
| | - Matthew Bashton
- Faculty of Health and Life SciencesNorthumbria UniversityNewcastle upon TyneUK
| | - David Pearce
- Faculty of Health and Life SciencesNorthumbria UniversityNewcastle upon TyneUK
| | - Jane A. Entwistle
- Faculty of Environment and EngineeringNorthumbria UniversityNewcastle upon TyneUK
| | - Vartul Sangal
- Faculty of Health and Life SciencesNorthumbria UniversityNewcastle upon TyneUK
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Drigot ZG, Clark SE. Insights into the role of the respiratory tract microbiome in defense against bacterial pneumonia. Curr Opin Microbiol 2024; 77:102428. [PMID: 38277901 PMCID: PMC10922932 DOI: 10.1016/j.mib.2024.102428] [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: 09/26/2023] [Revised: 01/03/2024] [Accepted: 01/05/2024] [Indexed: 01/28/2024]
Abstract
The respiratory tract microbiome (RTM) is a microbial ecosystem inhabiting different niches throughout the airway. A critical role for the RTM in dictating lung infection outcomes is underlined by recent efforts to identify community members benefiting respiratory tract health. Obligate anaerobes common in the oropharynx and lung such as Prevotella and Veillonella are associated with improved pneumonia outcomes and activate several immune defense pathways in the lower airway. Colonizers of the nasal cavity, including Corynebacterium and Dolosigranulum, directly impact the growth and virulence of lung pathogens, aligning with robust clinical correlations between their upper airway abundance and reduced respiratory tract infection risk. Here, we highlight recent work identifying respiratory tract bacteria that promote airway health and resilience against disease, with a focus on lung infections and the underlying mechanisms driving RTM-protective benefits.
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Affiliation(s)
- Zoe G Drigot
- University of Colorado School of Medicine, Department of Otolaryngology, Aurora, CO 80045, USA
| | - Sarah E Clark
- University of Colorado School of Medicine, Department of Otolaryngology, Aurora, CO 80045, USA.
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Guo Z, Huang L, Lai S. Global knowledge mapping and emerging research trends in the microbiome and asthma: A bibliometric and visualized analysis using VOSviewer and CiteSpace. Heliyon 2024; 10:e24528. [PMID: 38304829 PMCID: PMC10831755 DOI: 10.1016/j.heliyon.2024.e24528] [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: 10/10/2023] [Revised: 01/10/2024] [Accepted: 01/10/2024] [Indexed: 02/03/2024] Open
Abstract
Background Numerous prior studies have extensively highlighted the significance of the microbiome in association with asthma. While several studies have concentrated on the asthma microbiome in previous research, there is currently a lack of publications that employ bibliometric methods to assess this area. Methods In this study, the Web of Science Core Collection database was utilized as the data source, and the SCI-EXPANDED index was employed to ensure that the retrieved data were comprehensive and accurate. All original research articles and review articles related to the correlation between asthma and the microbiome were systematically searched from the inception of the database until June 20, 2023. These articles were subsequently visualized and analyzed using VOSviewer and CiteSpace software. Results A total of 1366 relevant publications were acquired, indicating a consistent annual increase in global publications in the field. The United States and China emerged as the top two contributors to international publications. Among prolific authors, Susan V. Lynch achieved the highest publication record, with Hans Bisgaard and Jakob Stokholm sharing the second position. The majority of publications concentrated on allergy-related and microbiome areas, with a few comprehensive journals standing out. Journals with 40 or more publications included the Journal of Allergy and Clinical Immunology, Allergy, Frontiers in Immunology, and PLOS One. The top 5 cited journals were the Journal of Allergy and Clinical Immunology, PLOS One, American Journal of Respiratory and Critical Care Medicine, Clinical and Experimental Allergy, and Nature. Upon analyzing keywords, high-frequency terms, such as asthma, gut microbiota, microbiome, children, childhood asthma, allergy, risk, exposure, inflammation, diversity, and chain fatty acids emerged as representative terms in the field. Conclusion This study systematically presented a comprehensive overview of the literature regarding the association between asthma and the microbiome over the last two decades. Through a bibliometric perspective, the findings may assist researchers with a better understanding of the essential information in the field.
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Affiliation(s)
- ZhiFeng Guo
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian Province, China
| | - LingHong Huang
- Department of Endocrinology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian Province, China
| | - SuMei Lai
- Stem Cell Laboratory, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian Province, China
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Kim G, Park C, Yoon YK, Park D, Lee JE, Lee D, Sun P, Park S, Yun C, Kang DH, Chung C. Prediction of lung cancer using novel biomarkers based on microbiome profiling of bronchoalveolar lavage fluid. Sci Rep 2024; 14:1691. [PMID: 38242941 PMCID: PMC10799071 DOI: 10.1038/s41598-024-52296-w] [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: 05/11/2023] [Accepted: 01/16/2024] [Indexed: 01/21/2024] Open
Abstract
There is an unmet need for biomarkers for the diagnosis of lung cancer and decision criteria for lung biopsy. We comparatively investigated the lung microbiomes of patients with lung cancer and benign lung diseases. Patients who underwent bronchoscopy at Chungnam National University Hospital between June 2021 and June 2022 were enrolled. Bronchoalveolar lavage fluid (BALF) was collected from 24 patients each with lung cancer and benign lung diseases. The samples were analyzed using 16S rRNA-based metagenomic sequencing. We found that alpha diversity and the beta diversity distribution (P = 0.001) differed significantly between patients with benign lung diseases and those with lung cancer. Firmicutes was the most abundant phylum in patients with lung cancer (33.39% ± 17.439), whereas Bacteroidota was the most abundant phylum in patients with benign lung disease (31.132% ± 22.505), respectively. In differential abundance analysis, the most differentially abundant microbiota taxon was unclassified_SAR202_clade, belonging to the phylum Chloroflexi. The established prediction model distinguished patients with benign lung disease from those with lung cancer with a high accuracy (micro area under the curve [AUC] = 0.98 and macro AUC = 0.99). The BALF microbiome may be a novel biomarker for the detection of lung cancer.
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Affiliation(s)
- Gihyeon Kim
- Genome and Company, Pangyo-ro 255, Bundang-gu, Seongnam, Korea
| | - Changho Park
- Genome and Company, Pangyo-ro 255, Bundang-gu, Seongnam, Korea
| | | | - Dongil Park
- Department of Internal Medicine, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Jeong Eun Lee
- Department of Internal Medicine, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Dahye Lee
- Institute for Medical Sciences, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Pureum Sun
- Institute for Medical Sciences, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Shinyoung Park
- Genome and Company, Pangyo-ro 255, Bundang-gu, Seongnam, Korea
| | - Changhee Yun
- Genome and Company, Pangyo-ro 255, Bundang-gu, Seongnam, Korea
| | - Da Hyun Kang
- Department of Internal Medicine, College of Medicine, Chungnam National University, Daejeon, Korea.
| | - Chaeuk Chung
- Department of Internal Medicine, College of Medicine, Chungnam National University, Daejeon, Korea.
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Li R, Li J, Zhou X. Lung microbiome: new insights into the pathogenesis of respiratory diseases. Signal Transduct Target Ther 2024; 9:19. [PMID: 38228603 DOI: 10.1038/s41392-023-01722-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 10/25/2023] [Accepted: 11/22/2023] [Indexed: 01/18/2024] Open
Abstract
The lungs were long thought to be sterile until technical advances uncovered the presence of the lung microbial community. The microbiome of healthy lungs is mainly derived from the upper respiratory tract (URT) microbiome but also has its own characteristic flora. The selection mechanisms in the lung, including clearance by coughing, pulmonary macrophages, the oscillation of respiratory cilia, and bacterial inhibition by alveolar surfactant, keep the microbiome transient and mobile, which is different from the microbiome in other organs. The pulmonary bacteriome has been intensively studied recently, but relatively little research has focused on the mycobiome and virome. This up-to-date review retrospectively summarizes the lung microbiome's history, composition, and function. We focus on the interaction of the lung microbiome with the oropharynx and gut microbiome and emphasize the role it plays in the innate and adaptive immune responses. More importantly, we focus on multiple respiratory diseases, including asthma, chronic obstructive pulmonary disease (COPD), fibrosis, bronchiectasis, and pneumonia. The impact of the lung microbiome on coronavirus disease 2019 (COVID-19) and lung cancer has also been comprehensively studied. Furthermore, by summarizing the therapeutic potential of the lung microbiome in lung diseases and examining the shortcomings of the field, we propose an outlook of the direction of lung microbiome research.
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Affiliation(s)
- Ruomeng Li
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Jing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China.
| | - Xikun Zhou
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China.
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Leduc L, Costa M, Leclère M. The Microbiota and Equine Asthma: An Integrative View of the Gut-Lung Axis. Animals (Basel) 2024; 14:253. [PMID: 38254421 PMCID: PMC10812655 DOI: 10.3390/ani14020253] [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: 12/22/2023] [Revised: 01/11/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
Both microbe-microbe and host-microbe interactions can have effects beyond the local environment and influence immunological responses in remote organs such as the lungs. The crosstalk between the gut and the lungs, which is supported by complex connections and intricate pathways, is defined as the gut-lung axis. This review aimed to report on the potential role of the gut-lung gut-lung axis in the development and persistence of equine asthma. We summarized significant determinants in the development of asthma in horses and humans. The article discusses the gut-lung axis and proposes an integrative view of the relationship between gut microbiota and asthma. It also explores therapies for modulating the gut microbiota in horses with asthma. Improving our understanding of the horse gut-lung axis could lead to the development of techniques such as fecal microbiota transplants, probiotics, or prebiotics to manipulate the gut microbiota specifically for improving the management of asthma in horses.
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Affiliation(s)
- Laurence Leduc
- Clinical Sciences Department, Université de Montréal, Saint-Hyacinthe, QC J2S 2M2, Canada;
| | - Marcio Costa
- Veterinary Department of Biomedical Sciences, Université de Montréal, Saint-Hyacinthe, QC J2S 2M2, Canada;
| | - Mathilde Leclère
- Clinical Sciences Department, Université de Montréal, Saint-Hyacinthe, QC J2S 2M2, Canada;
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Reuter S, Raspe J, Taube C. Microbes little helpers and suppliers for therapeutic asthma approaches. Respir Res 2024; 25:29. [PMID: 38218816 PMCID: PMC10787474 DOI: 10.1186/s12931-023-02660-7] [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: 10/20/2023] [Accepted: 12/28/2023] [Indexed: 01/15/2024] Open
Abstract
Bronchial asthma is a prevalent and increasingly chronic inflammatory lung disease affecting over 300 million people globally. Initially considered an allergic disorder driven by mast cells and eosinophils, asthma is now recognized as a complex syndrome with various clinical phenotypes and immunological endotypes. These encompass type 2 inflammatory endotypes characterized by interleukin (IL)-4, IL-5, and IL-13 dominance, alongside others featuring mixed or non-eosinophilic inflammation. Therapeutic success varies significantly based on asthma phenotypes, with inhaled corticosteroids and beta-2 agonists effective for milder forms, but limited in severe cases. Novel antibody-based therapies have shown promise, primarily for severe allergic and type 2-high asthma. To address this gap, novel treatment strategies are essential for better control of asthma pathology, prevention, and exacerbation reduction. One promising approach involves stimulating endogenous anti-inflammatory responses through regulatory T cells (Tregs). Tregs play a vital role in maintaining immune homeostasis, preventing autoimmunity, and mitigating excessive inflammation after pathogenic encounters. Tregs have demonstrated their ability to control both type 2-high and type 2-low inflammation in murine models and dampen human cell-dependent allergic airway inflammation. Furthermore, microbes, typically associated with disease development, have shown immune-dampening properties that could be harnessed for therapeutic benefits. Both commensal microbiota and pathogenic microbes have demonstrated potential in bacterial-host interactions for therapeutic purposes. This review explores microbe-associated approaches as potential treatments for inflammatory diseases, shedding light on current and future therapeutics.
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Affiliation(s)
- Sebastian Reuter
- Department of Pulmonary Medicine, University Hospital Essen-Ruhrlandklinik, Tüschener Weg 40, 45239, Essen, Germany.
| | - Jonas Raspe
- Department of Pulmonary Medicine, University Hospital Essen-Ruhrlandklinik, Tüschener Weg 40, 45239, Essen, Germany
| | - Christian Taube
- Department of Pulmonary Medicine, University Hospital Essen-Ruhrlandklinik, Tüschener Weg 40, 45239, Essen, Germany
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LI B, HUANG Z, WANG Y, XUE J, XIA Y, XU Y, YANG H, LIANG N, LI S. [Relationship between Bacteria in the Lower Respiratory Tract/Lung Cancer
and the Development of Lung Cancer as well as Its Clinical Application]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2024; 26:950-956. [PMID: 38163981 PMCID: PMC10767651 DOI: 10.3779/j.issn.1009-3419.2023.101.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Indexed: 01/03/2024]
Abstract
Due to the advancement of 16S rRNA sequencing technology, the lower respiratory tract microbiota, which was considered non-existent, has been revealed. The correlation between these microorganisms and diseases such as tumor has been a hot topic in recent years. As the bacteria in the surrounding can infiltrate the tumors, researchers have also begun to pay attention to the biological behavior of tumor bacteria and their interaction with tumors. In this review, we present the characteristic of the lower respiratory tract bacteria and summarize recent research findings on the relationship between these microbiota and lung cancer. On top of that, we also summarize the basic feature of bacteria in tumors and focus on the characteristic of the bacteria in lung cancer. The relationship between bacteria in lung cancer and tumor development is also been discussed. Finally, we review the potential clinical applications of bacterial communities in the lower respiratory tract and lung cancer, and summarize key points of sample collection, sequencing, and contamination control, hoping to provide new ideas for the screening and treatment of tumors.
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Sunde RB, Thorsen J, Kim M, Schoos AMM, Stokholm J, Bønnelykke K, Bisgaard H, Chawes B. Bacterial colonisation of the airway in neonates and risk of asthma and allergy until age 18 years. Eur Respir J 2024; 63:2300471. [PMID: 38097209 DOI: 10.1183/13993003.00471-2023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 11/10/2023] [Indexed: 12/19/2023]
Abstract
BACKGROUND We previously showed an association between neonatal bacterial airway colonisation and increased risk of persistent wheeze/asthma until age 5 years. Here, we study the association with persistent wheeze/asthma and allergy-related traits until age 18 years. METHODS We investigated the association between airway colonisation with Streptococcus pneumoniae, Moraxella catarrhalis and/or Haemophilus influenzae in 1-month-old neonates from the COPSAC2000 mother-child cohort and the development of persistent wheeze/asthma and allergy-related traits longitudinally until age 18 years using generalised estimating equations. Replication was sought in the similarly designed COPSAC2010 cohort of 700 children. RESULTS Neonatal airway colonisation was present in 66 (21%) out of 319 children and was associated with a 4-fold increased risk of persistent wheeze/asthma (adjusted OR 4.01 (95% CI 1.76-9.12); p<0.001) until age 7 years, but not from age 7 to 18 years. Replication in the COPSAC2010 cohort showed similar results using 16S data. Colonisation was associated with an increased number of exacerbations (adjusted incidence rate ratio 3.20 (95% CI 1.38-7.44); p<0.01) until age 7 years, but not from age 7 to 18 years. Colonisation was associated with increased levels of blood eosinophils (adjusted geometric mean ratio 1.24 (95% CI 1.06-1.44); p<0.01) and tumour necrosis factor (TNF)-α (adjusted geometric mean ratio 1.09 (95% CI 1.02-1.16); p=0.01) until age 12 years. There were no associations with lung function, bronchial reactivity, fractional exhaled nitric oxide, allergic sensitisation, total IgE or atopic dermatitis up to age 18 years. CONCLUSIONS Neonatal airway colonisation was associated with early-onset persistent wheeze/asthma, exacerbations, elevated blood eosinophils and elevated TNF-α in blood, most prominent in early childhood, thereafter diminishing and no longer evident by age 18 years.
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Affiliation(s)
- Rikke Bjersand Sunde
- COPSAC (Copenhagen Prospective Studies on Asthma in Childhood), Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
- Department of Pediatrics, Slagelse Hospital, Slagelse, Denmark
| | - Jonathan Thorsen
- COPSAC (Copenhagen Prospective Studies on Asthma in Childhood), Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Min Kim
- COPSAC (Copenhagen Prospective Studies on Asthma in Childhood), Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Ann-Marie Malby Schoos
- COPSAC (Copenhagen Prospective Studies on Asthma in Childhood), Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
- Department of Pediatrics, Slagelse Hospital, Slagelse, Denmark
| | - Jakob Stokholm
- COPSAC (Copenhagen Prospective Studies on Asthma in Childhood), Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
- Department of Pediatrics, Slagelse Hospital, Slagelse, Denmark
- Section of Microbiology and Fermentation, Department of Food Science, University of Copenhagen, Frederiksberg, Denmark
| | - Klaus Bønnelykke
- COPSAC (Copenhagen Prospective Studies on Asthma in Childhood), Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Hans Bisgaard
- COPSAC (Copenhagen Prospective Studies on Asthma in Childhood), Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
- Passed away 8 September 2022
| | - Bo Chawes
- COPSAC (Copenhagen Prospective Studies on Asthma in Childhood), Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
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Naughten S, Ecklu-Mensah G, Constantino G, Quaranta A, Schulkers Escalante K, Bai-Tong S, Gilbert J, Leibel S, Wheelock CE, Leibel S. The re-emerging role of linoleic acid in paediatric asthma. Eur Respir Rev 2023; 32:230063. [PMID: 37914192 PMCID: PMC10618909 DOI: 10.1183/16000617.0063-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 09/04/2023] [Indexed: 11/03/2023] Open
Abstract
Asthma is the most common chronic disease within the paediatric population. Although it is multifactorial, its onset may be linked to early-life exposures with subsequent impact on immune system development. Microbial and dietary metabolic products have been implicated in the development and exacerbation of paediatric asthma. Linoleic acid is the most common omega-6 polyunsaturated fatty acid in the Western diet. In this review, we summarise the literature regarding the involvement of linoleic acid in the development of and its impact on existing paediatric asthma. First, we summarise the existing knowledge surrounding the relationship between human microbial metabolism and allergic diseases in children. Next, we examine cellular or animal model-based mechanistic studies that investigated the impact of dietary- and microbial-derived linoleic acid metabolites on asthma. Finally, we review the literature investigating the impact of linoleic acid metabolites on the development and exacerbation of childhood asthma. While there is conflicting evidence, there is growing support for a role of linoleic acid in the onset and pathophysiology of asthma. We recommend that additional cellular, animal, and longitudinal studies are performed that target linoleic acid and its metabolites.
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Affiliation(s)
- Sarah Naughten
- Department of Pediatrics, University of California San Diego, La Jolla, CA, USA
| | - Gertrude Ecklu-Mensah
- Department of Pediatrics, University of California San Diego, La Jolla, CA, USA
- Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | | | - Alessandro Quaranta
- Unit of Integrative Metabolomics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | | | - Shiyu Bai-Tong
- Department of Pediatrics, University of California San Diego, La Jolla, CA, USA
| | - Jack Gilbert
- Department of Pediatrics, University of California San Diego, La Jolla, CA, USA
- Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Sandra Leibel
- Department of Pediatrics, University of California San Diego, La Jolla, CA, USA
| | - Craig E Wheelock
- Unit of Integrative Metabolomics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Respiratory Medicine and Allergy, Karolinska University Hospital, Stockholm, Sweden
| | - Sydney Leibel
- Department of Pediatrics, University of California San Diego, La Jolla, CA, USA
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