Target intelligence / Profile preview

Histamine Release (via Immune Response)

Molecular classification
Cellular process, Immune response, Signaling pathway
01

Overview

Histamine release via the immune system is a process where mast cells and basophils, upon activation (typically by IgE cross-linking), release histamine. This release triggers various physiological effects mediated by histamine receptors (H1R-H4R). It is a central event in allergic reactions and other inflammatory conditions, leading to vasodilation, bronchoconstriction, pruritus, and chemotaxis of immune cells. Antihistamines can block the histamine receptors. Severe reactions like anaphylaxis require epinephrine.

02

Mechanism of action

Block histamine receptor activation; Counteract physiological effects of histamine

03

Biological functions

Immune responseInflammationVasodilationBronchoconstrictionChemotaxisRegulation of cytokine production
04

Disease associations

AllergiesAnaphylaxisAsthmaAllergic rhinitisConjunctivitisHivesFood allergiesInflammation
05

Safety considerations

Excessive or inappropriate histamine releaseAnaphylaxis
06

Interacting drugs

Antihistamines

1 more in the full profile.

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