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组织胺是速发型变态反应游离的一种介质,分子量大约为184.04。血流中的嗜硷性细胞或组织中的肥大细胞由于抗原和细胞表面的IgE反应,而放出血管活性胺,使小血管的通透性亢进,引起皮肤粘膜发红、肿胀等
Histamine is a mediator of immediate-onset allergic reactions with a molecular weight of approximately 184.04. Mast cells in the basophilic cells or tissues in the bloodstream release vasoactive amines due to the IgE reaction between the antigen and the cell surface, thereby increasing the permeability of small blood vessels and causing redness and swelling of skin and mucous membranes