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a substance, such as histamine or serotonin, that contains amino groups and is pharmacologically characterized by its action on the blood vessels (altering vascular caliber or permeability).
va·so·ac·tive a·mine(vā'sō-ak'tiv ă-mēn')
A substance, such as histamine or serotonin, which contains amino groups and is pharmacologically characterized by its action on the blood vessels (altering vascular caliber or permeability).
an organic compound containing nitrogen.
amine neurotransmitters, e.g. norepinephrine, serotonin and dopamine.
direct-acting sympathomimetic a's
activate adrenergic effector cells, e.g. catecholamine, directly and do not need adrenergic nerves to exert their effects.
enteroendocrine cells, distributed widely in the gastric, intestinal and pancreatic tissue, synthesize peptide and amine hormones that control the secretion of digestive juices. See also apud cells.
amine precursor uptake and decarboxylation cells
see apud cells.
occur in plants, e.g. cyclopamine, tyramine.
amine that causes vasodilatation and increases small vessel permeability, e.g. histamine and serotonin.