Mast cells and histamine

Mast cells are long-lived immune cells found throughout body tissues that release histamine and other chemical mediators when triggered by allergens, pathogens, or inflammatory signals, making them central players in allergic reactions, asthma, and anaphylaxis. Researchers study how these cells sense danger signals, communicate with T cells and basophils through cytokines, and calibrate responses that can protect against parasites or spiral into harmful chronic inflammation. A major open question is why mast cell activation sometimes resolves tissue injury and other times drives disease, as in mastocytosis, where mast cells accumulate abnormally and cause systemic symptoms. Ongoing work aims to map the signaling pathways that control mast cell behavior precisely enough to design therapies that suppress harmful responses without impairing the protective ones.

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Keywords

Mast CellsAllergic DiseaseImmune ResponsesHistamineBasophilsT Cell Activation