Preferred Label : Fc Epsilon Receptor I Signaling Pathway KEGG;
NCIt related terms : Fc epsilon RI signaling pathway;
Alternative definition : KEGG: Fc epsilon RI-mediated signaling pathways in mast cells are initiated by the
interaction of antigen (Ag) with IgE bound to the extracellular domain of the alpha
chain of Fc epsilon RI. The activation pathways are regulated both positively and
negatively by the interactions of numerous signaling molecules. Mast cells that are
thus activated release preformed granules which contain biogenic amines (especially
histamines) and proteoglycans (especially heparin). The activation of phospholipase
A2 causes the release of membrane lipids followed by development of lipid mediators
such as leukotrienes (LTC4, LTD4 and LTE4) and prostaglandins (especially PDG2). There
is also secretion of cytokines, the most important of which are TNF-alpha, IL-4 and
IL-5. These mediators and cytokines contribute to inflammatory responses.;
KEGG ID : hsa04664;
Origin ID : C91476;
UMLS CUI : C2984288;
Semantic type(s)
has_gene_product_element
pathway_has_gene_element