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vasoactive amine

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
vasoactive amine
n.
A substance containing amino groups, such as histamine or serotonin, that acts on the blood vessels to alter their permeability or to cause vasodilation.

amine
an organic compound containing nitrogen.

biogenic a's
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.
amine hormones
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
toxic a's
occur in plants, e.g. cyclopamine, tyramine.
vasoactive amine
amine that causes vasodilatation and increases small vessel permeability, e.g. histamine and serotonin.


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