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Neeland MR, Gubbels L, Wong ATC, Walker H, Ranganathan SC, Shanthikumar S. Pulmonary immune profiling reveals common inflammatory endotypes of childhood wheeze and suppurative lung disease. Mucosal Immunol 2024; 17:359-370. [PMID: 38492745 DOI: 10.1016/j.mucimm.2024.03.001] [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: 11/16/2023] [Revised: 03/01/2024] [Accepted: 03/05/2024] [Indexed: 03/18/2024]
Abstract
Suppurative lung disease and wheezing are common respiratory diseases of childhood, however, due to poor understanding of underlying pathobiology, there are limited treatment options and disease recurrence is common. We aimed to profile the pulmonary and systemic immune response in children with wheeze and chronic suppurative lung disease for identification of endotypes that can inform improved clinical management. We used clinical microbiology data, highly multiplexed flow cytometry and immunoassays to compare pulmonary [bronchoalveolar lavage (BAL)] and systemic immunity in children with lung disease and controls. Unsupervised analytical approaches were applied to BAL immune data to explore biological endotypes. We identified two endotypes that were analogous in both frequency and immune signature across both respiratory diseases. The hyper-inflammatory endotype had a 12-fold increase in neutrophil infiltration and upregulation of 14 soluble signatures associated with type 2 inflammation and cell recruitment to tissue. The non-inflammatory endotype was not significantly different from controls. We showed these endotypes are measurable in a clinical setting and can be defined by measuring only three immune factors in BAL. We identified hyper-inflammatory and non-inflammatory endotypes common across pediatric wheeze and chronic suppurative lung disease that, if validated in future studies, have the potential to inform clinical management.
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Affiliation(s)
- Melanie R Neeland
- Infection, Immunity and Global Health Theme, Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Australia; Department of Paediatrics, University of Melbourne, Parkville, Australia.
| | - Liam Gubbels
- Infection, Immunity and Global Health Theme, Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Australia
| | - Anson Tsz Chun Wong
- Infection, Immunity and Global Health Theme, Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Australia; Department of Paediatrics, University of Melbourne, Parkville, Australia
| | - Hannah Walker
- Infection, Immunity and Global Health Theme, Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Australia; Department of Paediatrics, University of Melbourne, Parkville, Australia; Children's Cancer Centre, Royal Children's Hospital, Parkville, Australia
| | - Sarath C Ranganathan
- Infection, Immunity and Global Health Theme, Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Australia; Department of Paediatrics, University of Melbourne, Parkville, Australia; Respiratory and Sleep Medicine, Royal Children's Hospital, Parkville, Australia
| | - Shivanthan Shanthikumar
- Infection, Immunity and Global Health Theme, Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Australia; Department of Paediatrics, University of Melbourne, Parkville, Australia; Respiratory and Sleep Medicine, Royal Children's Hospital, Parkville, Australia
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Au-Doung PLW, Chan JCH, Kui OYH, Ho MKY, Cheung YT, Lam JKW, Chan HK, Brannan J, Chan KCC, Li AM, Leung SSY. Objective monitoring tools for improved management of childhood asthma. Respir Res 2024; 25:194. [PMID: 38702779 PMCID: PMC11069259 DOI: 10.1186/s12931-024-02817-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: 03/11/2024] [Accepted: 04/18/2024] [Indexed: 05/06/2024] Open
Abstract
Asthma is a common chronic disease amongst children. Epidemiological studies showed that the mortality rate of asthma in children is still high worldwide. Asthma control is therefore essential to minimize asthma exacerbations, which can be fatal if the condition is poorly controlled. Frequent monitoring could help to detect asthma progression and ensure treatment effectiveness. Although subjective asthma monitoring tools are available, the results vary as they rely on patients' self-perception. Emerging evidence suggests several objective tools could have the potential for monitoring purposes. However, there is no consensus to standardise the use of objective monitoring tools. In this review, we start with the prevalence and severity of childhood asthma worldwide. Then, we detail the latest available objective monitoring tools, focusing on their effectiveness in paediatric asthma management. Publications of spirometry, fractional exhaled nitric oxide (FeNO), hyperresponsiveness tests and electronic monitoring devices (EMDs) between 2016 and 2023 were included. The potential advantages and limitations of each tool were also discussed. Overall, this review provides a summary for researchers dedicated to further improving objective paediatric asthma monitoring and provides insights for clinicians to incorporate different objective monitoring tools in clinical practices.
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Affiliation(s)
- Phillip L W Au-Doung
- School of Pharmacy, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong SAR, China
| | - Jason C H Chan
- School of Pharmacy, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong SAR, China
| | - Oliver Y H Kui
- School of Pharmacy, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong SAR, China
| | - Marco K Y Ho
- School of Pharmacy, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong SAR, China
| | - Yin Ting Cheung
- School of Pharmacy, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong SAR, China
| | - Jenny K W Lam
- Department of Pharmaceutics, UCL School of Pharmacy, University College London, London, WC1N 1AX, UK
| | - Hak-Kim Chan
- Sydney Pharmacy School, University of Sydney, Sydney, NSW, Australia
| | - John Brannan
- Department of Respiratory and Sleep Medicine, John Hunter Hospital, Newcastle, NSW, Australia
| | - Kate C C Chan
- Department of Paediatrics, Prince of Wales Hospital, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong SAR, China
| | - Albert M Li
- Department of Paediatrics, Prince of Wales Hospital, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong SAR, China
| | - Sharon S Y Leung
- School of Pharmacy, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong SAR, China.
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Papadopoulos NG, Apostolidou E, Miligkos M, Xepapadaki P. Bacteria and viruses and their role in the preschool wheeze to asthma transition. Pediatr Allergy Immunol 2024; 35:e14098. [PMID: 38445451 DOI: 10.1111/pai.14098] [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: 11/13/2023] [Revised: 02/08/2024] [Accepted: 02/09/2024] [Indexed: 03/07/2024]
Abstract
Wheezing is the cardinal symptom of asthma; its presence early in life, mostly caused by viral infections, is a major risk factor for the establishment of persistent or recurrent disease. Early-life wheezing and asthma exacerbations are triggered by common respiratory viruses, mainly rhinoviruses (RV), and to a lesser extent, respiratory syncytial virus, parainfluenza, human metapneumovirus, coronaviruses, adenoviruses, influenza, and bocavirus. The excess presence of bacteria, several of which are part of the microbiome, has also been identified in association with wheezing and acute asthma exacerbations, including haemophilus influenza, streptococcus pneumoniae, moraxella catarrhalis, mycoplasma pneumoniae, and chlamydophila pneumonia. While it is not clear when asthma starts, its characteristics develop over time. Airway remodeling already appears between the ages of 1 and 3 years of age even prior to the presence of atopic inflammation or an asthma diagnosis. The role of genetic defect or variations hampering the airway epithelium in response to environmental stimuli and severe disease morbidity are now considered as major determinants for early structural changes. Repeated viral infections can induce and perpetuate airway hyperresponsiveness. Allergic sensitization, that often precedes infection-induced wheezing, shifts inflammation toward type-2, while common respiratory infections themselves promote type-2 inflammation. Nevertheless, most children who wheeze with viral infections during infancy and during preschool years do not develop persistent asthma. Multiple factors, including illness severity, viral etiology, allergic sensitization, and the exposome, are associated with disease persistence. Here, we summarize current knowledge and developments in infection epidemiology of asthma in children, describing the known impact of each individual agent and mechanisms of transition from recurrent wheeze to asthma.
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Affiliation(s)
- Nikolaos G Papadopoulos
- Allergy Department, 2nd Pediatric Clinic, National and Kapodistrian University of Athens, Athens, Greece
- Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, UK
| | | | - Michael Miligkos
- Allergy Department, 2nd Pediatric Clinic, National and Kapodistrian University of Athens, Athens, Greece
| | - Paraskevi Xepapadaki
- Allergy Department, 2nd Pediatric Clinic, National and Kapodistrian University of Athens, Athens, Greece
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Kappen J, Diamant Z, Agache I, Bonini M, Bousquet J, Canonica GW, Durham SR, Guibas GV, Hamelmann E, Jutel M, Papadopoulos NG, Roberts G, Shamji MH, Zieglmayer P, Gerth van Wijk R, Pfaar O. Standardization of clinical outcomes used in allergen immunotherapy in allergic asthma: An EAACI position paper. Allergy 2023; 78:2835-2850. [PMID: 37449468 DOI: 10.1111/all.15817] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/17/2023] [Accepted: 06/20/2023] [Indexed: 07/18/2023]
Abstract
INTRODUCTION In allergic asthma patients, one of the more common phenotypes might benefit from allergen immunotherapy (AIT) as add-on intervention to pharmacological treatment. AIT is a treatment with disease-modifying modalities, the evidence for efficacy is based on controlled clinical trials following standardized endpoint measures. However, so far there is a lack of a consensus for asthma endpoints in AIT trials. The aim of a task force (TF) of the European Academy of Allergy and Clinical Immunology (EAACI) is evaluating several outcome measures for AIT in allergic asthma. METHODS The following domains of outcome measures in asthmatic patients have been evaluated for this position paper (PP): (i) exacerbation rate, (ii) lung function, (iii) ICS withdrawal, (iv) symptoms and rescue medication use, (v) questionnaires (PROMS), (vi) bronchial/nasal provocation, (vii) allergen exposure chambers (AEC) and (viii) biomarkers. RESULTS Exacerbation rate can be used as a reliable objective primary outcome; however, there is limited evidence due to different definitions of exacerbation. The time after ICS withdrawal to first exacerbation is considered a primary outcome measure. Besides, the advantages and disadvantages and clinical implications of further domains of asthma endpoints in AIT trials are elaborated in this PP. CONCLUSION This EAACI-PP aims to highlight important aspects of current asthma measures by critically evaluating their applicability for controlled trials of AIT.
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Affiliation(s)
- Jasper Kappen
- Department of Pulmonology, STZ Centre of Excellence for Asthma, COPD and Respiratory Allergy, Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands
- Department of National Heart and Lung Institute, Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Imperial College London, London, UK
| | - Zuzana Diamant
- Departmentt of Microbiology Immunology & Transplantation, KU Leuven, Catholic University of Leuven, Leuven, Belgium
- Department of Respiratory Medicine & Allergology, Institute for Clinical Science, Skane University Hospital, Lund University, Lund, Sweden
- Department of Clinical Pharmacy & Pharmacology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Department of Respiratory Medicine, First Faculty of Medicine, Charles University and Thomayer Hospital, Prague, Czech Republic
| | | | - Matteo Bonini
- Department of National Heart and Lung Institute, Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Imperial College London, London, UK
- Department of Cardiovascular and Thoracic Sciences, Università Cattolica del Sacro Cuore, Rome, Italy
- Department of Clinical and Surgical Sciences, Fondazione Policlinico Universitario A. Gemelli - IRCCS, Rome, Italy
| | - Jean Bousquet
- Charite Universitatsmedizin Berlin Campus Berlin Buch, MASK-air, Montpellier, France
| | - G Walter Canonica
- Personalized Medicine Asthma & Allergy Clinic Humanitas University & Research Hospital-IRCCS, Milan, Italy
| | - Stephen R Durham
- Department of National Heart and Lung Institute, Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Imperial College London, London, UK
- MRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, UK
| | - George V Guibas
- Department of Allergy and Clinical Immunology, Royal Preston Hospital, Lancashire Teaching Hospitals NHS Foundation Trust, Preston, UK
- School of Biological Sciences, Medicine and Health, University of Manchester, Manchester, UK
| | - Eckard Hamelmann
- Children's Center Bethel, University Hospital Bielefeld, University Bielefeld, Bielefeld, Germany
| | - Marek Jutel
- Department of Clinical Immunology, Wroclaw Medical University, Wroclaw, Poland
- ALL-MED Medical Research Institute, Wroclaw, Poland
| | | | - Graham Roberts
- The David Hide Asthma and Allergy Research Centre, St Mary's Hospital, Newport, UK
- NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, UK
- Paediatric Allergy and Respiratory Medicine (MP803), Clinical & Experimental Sciences & Human Development in Health Academic Units University of Southampton Faculty of Medicine & University Hospital Southampton, Southampton, UK
| | - Mohamed H Shamji
- Department of National Heart and Lung Institute, Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Imperial College London, London, UK
- MRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, UK
| | - Petra Zieglmayer
- Karl Landsteiner University, Competence Center for Allergology and Immunology, Krems, Austria
| | - Roy Gerth van Wijk
- Section of Allergology, Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Oliver Pfaar
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Rhinology and Allergy, University Hospital Marburg, Philipps-Universität Marburg, Marburg, Germany
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Allergic Asthma in the Era of Personalized Medicine. J Pers Med 2022; 12:jpm12071162. [PMID: 35887659 PMCID: PMC9321181 DOI: 10.3390/jpm12071162] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/08/2022] [Accepted: 07/13/2022] [Indexed: 01/17/2023] Open
Abstract
Allergic asthma is the most common asthma phenotype and is characterized by IgE sensitization to airborne allergens and subsequent typical asthmatic symptoms after exposure. A form of type 2 (T2) airway inflammation underlies allergic asthma. It usually arises in childhood and is accompanied by multimorbidity presenting with the occurrence of other atopic diseases, such as atopic dermatitis and allergic rhinitis. Diagnosis of the allergic endotype is based on in vivo (skin prick tests) and/or in vitro (allergen-specific IgE levels, component-resolved diagnosis (CRD)) documentation of allergic sensitization. Biomarkers identifying patients with allergic asthma include total immunoglobulin E (IgE) levels, fractional exhaled nitric oxide (FeNO) and serum eosinophil counts. The treatment of allergic asthma is a complex procedure and requires a patient-tailored approach. Besides environmental control involving allergen avoidance measurements and cornerstone pharmacological interventions based on inhaled drugs, allergen-specific immunotherapy (AIT) and biologics are now at the forefront when it comes to personalized management of asthma. The current review aims to shed light on the distinct phenotype of allergic asthma, ranging over its current definition, clinical characteristics, pathophysiology and biomarkers, as well as its treatment options in the era of precision medicine.
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Maurer DJ, Liu C, Xepapadaki P, Stanic B, Bachert C, Finotto S, Gao Y, Graser A, Jartti T, Kistler W, Kowalski M, Lukkarinen H, Pasioti M, Tan G, Villiger M, Zhang L, Zhang N, Akdis M, Papadopoulos NG, Akdis CA. Physical activity in asthma control and its immune modulatory effect in asthmatic preschoolers. Allergy 2022; 77:1216-1230. [PMID: 34547110 PMCID: PMC9291774 DOI: 10.1111/all.15105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/06/2021] [Accepted: 09/13/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND The impact of physical activity on immune response is a hot topic in exercise immunology, but studies involving asthmatic children are scarce. Our aims were to examine whether there were any differences in the level of physical activity and daily TV attendance, to assess its role on asthma control and immune responses to various immune stimulants. METHODS Weekly physical activity and daily television attendance were obtained from questionnaires at inclusion of the PreDicta study. PBMC cultures were stimulated with phytohemagglutinin (PHA), R848, poly I:C, and zymosan. A panel of cytokines was measured and quantified in cell culture supernatants using luminometric multiplex immunofluorescence beads-based assay. RESULTS Asthmatic preschoolers showed significantly more TV attendance than their healthy peers (58.6% vs. 41.5% 1-3 h daily and only 25.7% vs. 47.2% ≤1 h daily) and poor asthma control was associated with less frequent physical activity (PA) (75% no or occasional activity in uncontrolled vs. 20% in controlled asthma; 25% ≥3 times weekly vs. 62%). Asthmatics with increased PA exhibited elevated cytokine levels in response to polyclonal stimulants, suggesting a readiness of circulating immune cells for type 1, 2, and 17 cytokine release compared to subjects with low PA and high TV attendance. This may also represent a proinflammatory state in high PA asthmatic children. Low physical activity and high TV attendance were associated with a decrease in proinflammatory cytokines. Proinflammatory cytokines were correlating with each other in in vitro immune responses of asthmatic children, but not healthy controls, this correlation was more pronounced in children with sedentary behavior. CONCLUSION Asthmatic children show more sedentary behavior than healthy subjects, while poor asthma control is associated with a substantial decrease in physical activity. Our results suggest that asthmatic children may profit from regular exercise, as elevated cytokine levels in stimulated conditions indicate an immune system prepared for responding strongly in case of different types of infections. However, it has to be considered that a hyperinflammatory state in high PA may not be beneficial in asthmatic children.
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Affiliation(s)
- Debbie J. Maurer
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
- Swiss Research Institute for Sports Medicine (SRISM) Davos Switzerland
- Department of Sports Medicine Davos Hospital Davos Switzerland
| | - Chengyao Liu
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital Capital Medical University Beijing China
| | - Paraskevi Xepapadaki
- Allergy Department, 2nd Pediatric Clinic National and Kapodistrian University of Athens Athens Greece
| | - Barbara Stanic
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
| | - Claus Bachert
- Upper Airway Research Laboratory Ghent University Hospital Ghent Belgium
| | - Susetta Finotto
- Department of Molecular Pneumology Friedrich‐Alexander‐Universität (FAU) Erlangen‐Nürnberg, Universitätsklinikum Erlangen Erlangen Germany
| | - Ya‐Dong Gao
- Department of Allergology Zhongnan Hospital of Wuhan University Wuhan China
| | - Anna Graser
- Department of Molecular Pneumology Friedrich‐Alexander‐Universität (FAU) Erlangen‐Nürnberg, Universitätsklinikum Erlangen Erlangen Germany
| | - Tuomas Jartti
- Department of Pediatrics and Adolescent Medicine University of Turku and Turku University Hospital Turku Finland
- PEDEGO Research Unit, Medical Research Center University of Oulu Oulu Finland
- Department of Pediatrics and Adolescent Medicine Oulu University Hospital Oulu Finland
| | - Walter Kistler
- Swiss Research Institute for Sports Medicine (SRISM) Davos Switzerland
- Department of Sports Medicine Davos Hospital Davos Switzerland
| | - Marek Kowalski
- Department of Immunology, Rheumatology and Allergy Central University Hospital Lodz Poland
| | - Heikki Lukkarinen
- Department of Pediatrics and Adolescent Medicine University of Turku and Turku University Hospital Turku Finland
| | - Maria Pasioti
- Allergy Department, 2nd Pediatric Clinic National and Kapodistrian University of Athens Athens Greece
| | - Ge Tan
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
| | - Michael Villiger
- Swiss Research Institute for Sports Medicine (SRISM) Davos Switzerland
- Department of Sports Medicine Davos Hospital Davos Switzerland
| | - Luo Zhang
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital Capital Medical University Beijing China
- Department of Allergy, Beijing TongRen Hospital Capital Medical University Beijing China
| | - Nan Zhang
- Upper Airway Research Laboratory Ghent University Hospital Ghent Belgium
| | - Mübeccel Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
| | - Nikolaos G. Papadopoulos
- Allergy Department, 2nd Pediatric Clinic National and Kapodistrian University of Athens Athens Greece
- Division of Infection, Immunity & Respiratory Medicine University of Manchester Manchester UK
| | - Cezmi A. Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
- Swiss Research Institute for Sports Medicine (SRISM) Davos Switzerland
- Christine Kühne‐Center for Allergy Research and Education Davos Switzerland
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Shanthikumar S, Ranganathan SC, Saffery R, Neeland MR. Mapping Pulmonary and Systemic Inflammation in Preschool Aged Children With Cystic Fibrosis. Front Immunol 2021; 12:733217. [PMID: 34721395 PMCID: PMC8554310 DOI: 10.3389/fimmu.2021.733217] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 09/29/2021] [Indexed: 12/16/2022] Open
Abstract
The immune landscape of the paediatric respiratory system remains largely uncharacterised and as a result, the mechanisms of globally important childhood respiratory diseases remain poorly understood. In this work, we used high parameter flow cytometry and inflammatory cytokine profiling to map the local [bronchoalveolar lavage (BAL)] and systemic (whole blood) immune response in preschool aged children with cystic fibrosis (CF) and aged-matched healthy controls. We demonstrate that children with CF show pulmonary infiltration of CD66b+ granulocytes and increased levels of MIP-1α, MIG, MCP-1, IL-8, and IL-6 in BAL relative to healthy control children. Proportions of systemic neutrophils positively correlated with age in children with CF, whilst systemic CD4 T cells and B cells were inversely associated with age. Inflammatory cells in the BAL from both CF and healthy children expressed higher levels of activation and migration markers relative to their systemic counterparts. This work highlights the utility of multiplex immune profiling and advanced analytical pipelines to understand mechanisms of lung disease in childhood.
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Affiliation(s)
- Shivanthan Shanthikumar
- Infection and Immunity Theme, Murdoch Children's Research Institute, Parkville, VIC, Australia.,Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia.,Respiratory and Sleep Medicine, Royal Children's Hospital, Parkville, VIC, Australia
| | - Sarath C Ranganathan
- Infection and Immunity Theme, Murdoch Children's Research Institute, Parkville, VIC, Australia.,Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia.,Respiratory and Sleep Medicine, Royal Children's Hospital, Parkville, VIC, Australia
| | - Richard Saffery
- Infection and Immunity Theme, Murdoch Children's Research Institute, Parkville, VIC, Australia.,Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia
| | - Melanie R Neeland
- Infection and Immunity Theme, Murdoch Children's Research Institute, Parkville, VIC, Australia.,Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia
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Xie Z, Chai M, Gu W, Yuan H. Changes in fractional exhaled nitric oxide, exhaled carbon monoxide and pulmonary function during the acute attack, treatment and remission phases of pediatric asthma. Transl Pediatr 2020; 9:784-794. [PMID: 33457300 PMCID: PMC7804484 DOI: 10.21037/tp-20-351] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 12/08/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The current study aimed to explore the value of fractional exhaled nitric oxide (FeNO), exhaled carbon monoxide (eCO), and pulmonary function in the management of asthmatic children. METHODS One hundred children diagnosed with asthma were selected as research subjects. Patients were divided into a 3-5-year-old group and a group with children 6 years and older. They were also grouped depending on whether they had asthma alone (A0 group) or whether their asthma was complicated with allergic rhinitis (A+AR group). The FeNO, eCO levels, and pulmonary function in the acute attack period were analyzed 1 month after treatment and clinical remission period. RESULTS Asthmatic children demonstrated greater pulmonary dysfunction and significantly higher FeNO and eCO during the acute attack phase compared to both one month after treatment and clinical remission. The remission phase was characterized by decreased levels of FeNO and eCO and improvement of pulmonary function. The eCO levels in children aged 3-5 years old, and both FeNO and eCO levels in children 6 years and older were statistically lower during remission regardless of whether the patients had asthma alone or asthma complicated with rhinitis. However, 10% of the 100 children in the clinical remission period still demonstrated mid to high levels of FeNO. The critical value of FeNO levels during the acute period in children 6 years and older with asthma and rhinitis was 34.5 ppb (AUROC 0.814, 95% CI: 0.684-0.944) with a sensitivity of 69.2% and specificity of 93.7%. CONCLUSIONS Dynamic monitoring of FeNO and eCO is an effective indicator of airway inflammation and thus represents an important clinical tool in assessing the severity of asthma in children.
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Affiliation(s)
- Zhichao Xie
- Department of Pediatrics, Affiliated Dongguan People's Hospital, Southern Medical University (Dongguan People's Hospital), Dongguan, China
| | - Mingrong Chai
- Department of Pediatrics, Affiliated Dongguan People's Hospital, Southern Medical University (Dongguan People's Hospital), Dongguan, China
| | - Weiqiang Gu
- Department of Pediatrics, Affiliated Dongguan People's Hospital, Southern Medical University (Dongguan People's Hospital), Dongguan, China
| | - Huizhen Yuan
- Department of Pediatrics, Affiliated Dongguan People's Hospital, Southern Medical University (Dongguan People's Hospital), Dongguan, China
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