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Asthma: Pathogenesis and Management01:20

Asthma: Pathogenesis and Management

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Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
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Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
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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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Author Spotlight: Advancing Allergic Rhinitis Research with Multicolor Immunofluorescence
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Pathogenesis and Key Cells in Allergic Rhinitis.

Yuzhu He1, Yuxiang Chen2, Shuang Xu2

  • 1Department of Otolaryngology, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China, 2669239400@qq.com.

International Archives of Allergy and Immunology
|November 19, 2024
PubMed
Summary
This summary is machine-generated.

Allergic rhinitis (AR) impacts millions globally, affecting quality of life. While immunotherapy shows promise, current treatments for AR fail to provide a complete cure due to a narrow focus on specific immune cells.

Keywords:
Allergic rhinitisAllergy and immunologyB cellGroup 2 innate lymphoid cellsImmunoglobulin EMacrophageT cell

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Area of Science:

  • Immunology
  • Allergy Research

Background:

  • Allergic rhinitis (AR) is a prevalent chronic condition affecting up to 50% of individuals in high-income nations.
  • AR symptoms like nasal congestion and sneezing significantly impair learning, sleep, and overall quality of life, imposing a substantial burden.

Purpose of the Study:

  • To investigate the role of various immune cells beyond Th1 and Th2 in the pathogenesis of allergic rhinitis.
  • To highlight the limitations of current AR therapies that focus predominantly on T-helper 1 and T-helper 2 cells.

Main Methods:

  • Analysis of immune cell involvement in AR.
  • Review of current therapeutic strategies and their underlying mechanisms.

Main Results:

  • Group 2 innate lymphoid cells, B cells, T cells, and macrophages are implicated in AR pathogenesis through cytokine production and inflammatory mediation.
  • M2 macrophages exacerbate type 2 inflammation by promoting Th2 cells and eosinophils, worsening AR.

Conclusions:

  • Immunotherapy offers clinical benefits for AR by engaging immune cells, but does not provide a complete cure.
  • A comprehensive understanding of AR requires investigating the roles of diverse immune cells, including Group 2 innate lymphoid cells and M2 macrophages, not just Th1/Th2 cells.