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Related Concept Videos

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T Cell Types and Functions

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When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
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COPD: Pathogenesis and Clinical Features01:20

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Chronic obstructive pulmonary disease (COPD) is a group of lung conditions that progressively worsen over time, including chronic bronchitis and emphysema. This cluster of diseases collectively leads to a gradual and irreversible decline in lung function over time.
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Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features01:24

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

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Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...
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Chronic obstructive pulmonary disease is a common, preventable, and treatable respiratory disorder characterized by persistent symptoms and progressive airflow limitation. This limitation results from a combination of small-airway disease (obstructive bronchiolitis) and parenchymal destruction (emphysema), both driven by chronic inflammation from exposure to harmful particles or gases.The disease includes two main pathological entities: emphysema, marked by destruction of alveolar walls and...
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Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice
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Regulatory T cells and COPD.

Rachel Dancer1, David M Sansom

  • 1University of Birmingham School of Experimental Medicine, College of Medical and Dental Sciences, , Birmingham, UK.

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|October 24, 2013
PubMed
Summary
This summary is machine-generated.

Regulatory T cells may be dysfunctional in COPD patients, contributing to inflammation and tissue damage even after smoking cessation. Further investigation is crucial for understanding this acquired immune system role.

Keywords:
COPD ExacerbationsCopd ÀÜ MechanismsTobacco and the Lung

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Area of Science:

  • Immunology
  • Pulmonology
  • Autoimmunity

Background:

  • The innate immune system is recognized in COPD pathogenesis.
  • The acquired immune system's role in COPD is less understood.
  • COPD shares features with autoimmune diseases, suggesting a role for regulatory T cells.

Purpose of the Study:

  • To investigate the role of regulatory T cells in COPD.
  • To explore potential dysfunction or resistance to suppression by regulatory T cells in COPD patients.
  • To understand inflammation and tissue damage in COPD patients who have ceased smoking.

Main Methods:

  • Analysis of regulatory T cell numbers and function in COPD patients.
  • Comparison of regulatory T cell activity in smokers and ex-smokers with COPD.
  • Assessment of the impact of regulatory T cells on inflammation and tissue damage markers.

Main Results:

  • Increased numbers of regulatory T cells were observed in COPD patients.
  • Evidence suggests potential dysfunction or resistance to suppression by these cells.
  • Regulatory T cell alterations may correlate with inflammation and tissue damage.

Conclusions:

  • Regulatory T cells represent a potential therapeutic target in COPD.
  • Understanding their role is vital for managing COPD, especially in ex-smokers.
  • Further research into acquired immunity is needed for COPD treatment strategies.