Eosinophils in chronic obstructive pulmonary disease

Chronic Obstructive Pulmonary Disease (COPD) is a heterogeneous lung condition characterised by chronic respiratory symptoms, fixed airway obstruction and persistent inflammation that leads to a progressive airflow limitation. Although COPD has traditionally been linked to neutrophilic inflammation,...

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Veröffentlicht in:Therapeutic advances in respiratory disease Jg. 19; S. 17534666251335800
Hauptverfasser: Vanetti, Marco, Visca, Dina, Ardesi, Francesco, Zappa, Martina, Pignatti, Patrizia, Spanevello, Antonio
Format: Journal Article
Sprache:Englisch
Veröffentlicht: England SAGE Publications 01.01.2025
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ISSN:1753-4666, 1753-4658, 1753-4666
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Abstract Chronic Obstructive Pulmonary Disease (COPD) is a heterogeneous lung condition characterised by chronic respiratory symptoms, fixed airway obstruction and persistent inflammation that leads to a progressive airflow limitation. Although COPD has traditionally been linked to neutrophilic inflammation, recent studies have identified a subset of patients – approximately 20%–40% – with elevated eosinophil levels in blood and sputum. Emerging evidence suggests that eosinophilic inflammation has a pivotal role in a subset of COPD patients and may influence disease progression, exacerbation frequency and therapeutic responses. This narrative review provides a comprehensive analysis of the role of eosinophils in COPD with particular attention to their role as biomarkers in blood and sputum. We evaluate the prevalence of eosinophilic inflammation in COPD exanimating different thresholds used in blood and in sputum to define it. In addition, we focus on eosinophilic COPD phenotype as a treatable trait, emphasising recent evidence that supports the effectiveness of biological target therapy.
AbstractList Chronic Obstructive Pulmonary Disease (COPD) is a heterogeneous lung condition characterised by chronic respiratory symptoms, fixed airway obstruction and persistent inflammation that leads to a progressive airflow limitation. Although COPD has traditionally been linked to neutrophilic inflammation, recent studies have identified a subset of patients – approximately 20%–40% – with elevated eosinophil levels in blood and sputum. Emerging evidence suggests that eosinophilic inflammation has a pivotal role in a subset of COPD patients and may influence disease progression, exacerbation frequency and therapeutic responses. This narrative review provides a comprehensive analysis of the role of eosinophils in COPD with particular attention to their role as biomarkers in blood and sputum. We evaluate the prevalence of eosinophilic inflammation in COPD exanimating different thresholds used in blood and in sputum to define it. In addition, we focus on eosinophilic COPD phenotype as a treatable trait, emphasising recent evidence that supports the effectiveness of biological target therapy.
Chronic Obstructive Pulmonary Disease (COPD) is a heterogeneous lung condition characterised by chronic respiratory symptoms, fixed airway obstruction and persistent inflammation that leads to a progressive airflow limitation. Although COPD has traditionally been linked to neutrophilic inflammation, recent studies have identified a subset of patients - approximately 20%-40% - with elevated eosinophil levels in blood and sputum. Emerging evidence suggests that eosinophilic inflammation has a pivotal role in a subset of COPD patients and may influence disease progression, exacerbation frequency and therapeutic responses. This narrative review provides a comprehensive analysis of the role of eosinophils in COPD with particular attention to their role as biomarkers in blood and sputum. We evaluate the prevalence of eosinophilic inflammation in COPD exanimating different thresholds used in blood and in sputum to define it. In addition, we focus on eosinophilic COPD phenotype as a treatable trait, emphasising recent evidence that supports the effectiveness of biological target therapy.Chronic Obstructive Pulmonary Disease (COPD) is a heterogeneous lung condition characterised by chronic respiratory symptoms, fixed airway obstruction and persistent inflammation that leads to a progressive airflow limitation. Although COPD has traditionally been linked to neutrophilic inflammation, recent studies have identified a subset of patients - approximately 20%-40% - with elevated eosinophil levels in blood and sputum. Emerging evidence suggests that eosinophilic inflammation has a pivotal role in a subset of COPD patients and may influence disease progression, exacerbation frequency and therapeutic responses. This narrative review provides a comprehensive analysis of the role of eosinophils in COPD with particular attention to their role as biomarkers in blood and sputum. We evaluate the prevalence of eosinophilic inflammation in COPD exanimating different thresholds used in blood and in sputum to define it. In addition, we focus on eosinophilic COPD phenotype as a treatable trait, emphasising recent evidence that supports the effectiveness of biological target therapy.
Author Visca, Dina
Ardesi, Francesco
Spanevello, Antonio
Vanetti, Marco
Zappa, Martina
Pignatti, Patrizia
Author_xml – sequence: 1
  givenname: Marco
  orcidid: 0009-0007-3782-5021
  surname: Vanetti
  fullname: Vanetti, Marco
  organization: Department of Pulmonary Rehabilitation, Istituti Clinici Scientifici Maugeri IRCCS, Via Crotto Roncaccio 16, Tradate 12049, Italy, Department of Medicine and Surgery, University of Insubria, via Ravasi 2, Varese 21100, Italy
– sequence: 2
  givenname: Dina
  orcidid: 0000-0003-2298-1623
  surname: Visca
  fullname: Visca, Dina
  organization: Department of Pulmonary Rehabilitation, Istituti Clinici Scientifici Maugeri IRCCS, Tradate, Italy, Department of Medicine and Surgery, University of Insubria, Varese, Italy
– sequence: 3
  givenname: Francesco
  orcidid: 0000-0003-3420-4012
  surname: Ardesi
  fullname: Ardesi, Francesco
  organization: Department of Medicine and Surgery, University of Insubria, Varese, Italy
– sequence: 4
  givenname: Martina
  orcidid: 0000-0001-8443-5316
  surname: Zappa
  fullname: Zappa, Martina
  organization: Department of Pulmonary Rehabilitation, Istituti Clinici Scientifici Maugeri IRCCS, Tradate, Italy
– sequence: 5
  givenname: Patrizia
  surname: Pignatti
  fullname: Pignatti, Patrizia
  organization: Allergy and Immunology Unit, Istituti Clinici Scientifici Maugeri IRCCS, Pavia, Italy
– sequence: 6
  givenname: Antonio
  surname: Spanevello
  fullname: Spanevello, Antonio
  organization: Department of Pulmonary Rehabilitation, Istituti Clinici Scientifici Maugeri IRCCS, Tradate, Italy, Department of Medicine and Surgery, University of Insubria, Varese, Italy
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Keywords type-2 inflammation
biologics
eosinophil
biomarkers
COPD
Language English
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Snippet Chronic Obstructive Pulmonary Disease (COPD) is a heterogeneous lung condition characterised by chronic respiratory symptoms, fixed airway obstruction and...
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SubjectTerms Biomarkers - metabolism
Disease Progression
Eosinophils - immunology
Eosinophils - metabolism
Humans
Inflammation - physiopathology
Lung - immunology
Lung - physiopathology
Phenotype
Pulmonary Disease, Chronic Obstructive - drug therapy
Pulmonary Disease, Chronic Obstructive - immunology
Pulmonary Disease, Chronic Obstructive - physiopathology
Review
Sputum - cytology
Sputum - immunology
Title Eosinophils in chronic obstructive pulmonary disease
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