Lexic.us

Definition of Histamine

1. Noun. Amine formed from histidine that stimulates gastric secretions and dilates blood vessels; released by the human immune system during allergic reactions.

Definition of Histamine

1. Noun. (neurotransmitter) An amine, C₅H₉N₃, formed by decarboxylation of histidine, that causes dilatation of capillaries, contraction of smooth muscle, and stimulation of gastric acid secretion; it is released during allergic reactions. ¹

¹ Source: wiktionary.com

Definition of Histamine

1. [n -S]

Medical Definition of Histamine

1. Formed by decarboxylation of histidine. Potent pharmacological agent acting through receptors in smooth muscle and in secretory systems. Stored in mast cells and released by antigen. (See hypersensitivity). Responsible for the early symptoms of anaphylaxis. Also present in some venoms. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Histamine

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