Which inflammatory cell is found in almost all subtypes of asthma?

Prepare for your CVP and GI Pathology Exam. Study using flashcards and multiple choice questions with hints and explanations to excel in your test.

Multiple Choice

Which inflammatory cell is found in almost all subtypes of asthma?

Explanation:
Eosinophils are the inflammatory cells most consistently found across many asthma subtypes. In allergic or atopic asthma, Th2 cells release IL-5, which drives eosinophil maturation, recruitment, and survival in the airways. Eosinophils release cytotoxic granule proteins and other mediators that promote airway hyperresponsiveness, mucus production, and tissue damage, leading to the characteristic inflammatory pattern seen in most patients. While some asthma forms—especially severe or non-eosinophilic types—can have neutrophil-predominant inflammation, eosinophils remain the common feature that links many subtypes. Lymphocytes and macrophages are involved in the immune milieu, but their presence is not as specifically tied to nearly all forms of asthma as eosinophils.

Eosinophils are the inflammatory cells most consistently found across many asthma subtypes. In allergic or atopic asthma, Th2 cells release IL-5, which drives eosinophil maturation, recruitment, and survival in the airways. Eosinophils release cytotoxic granule proteins and other mediators that promote airway hyperresponsiveness, mucus production, and tissue damage, leading to the characteristic inflammatory pattern seen in most patients. While some asthma forms—especially severe or non-eosinophilic types—can have neutrophil-predominant inflammation, eosinophils remain the common feature that links many subtypes. Lymphocytes and macrophages are involved in the immune milieu, but their presence is not as specifically tied to nearly all forms of asthma as eosinophils.

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