au·ta·coid or au·to·coid (ô t -koid )n. An organic substance, such as a hormone, produced in one part of an organism and transported by the blood or lymph to another part of the organism where it exerts a physiologic effect on that part. |
autacoid
[ô′təkoid]
any one of the substances produced locally by one group of cells that exerts effects on other types of cells in the same region.
autacoid
a term once proposed to replace the term hormone and recently suggested as a general term for various physiologically active, endogenous substances (histamine, serotonin, angiotensin, prostaglandins, etc.) that do not yet fit into existing functional classifications.
autacoid
Endocrinology A locally acting hormone-like substance–eg, histamine, serotonin, angiotensin, eicosanoids
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