Parahormones

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Parahormones

 

biologically active substances, diverse in chemical structure, that affect the metabolism and many of the physiological processes of the body.

Parahormones are not, as a rule, formed in the endocrine glands (unlike hormones), but rather in other tissues and organs. The biological effect of parahormones is brief, since they are either destroyed or they combine with tissue proteins. Included among the parahormones are acetylcholine, certain precursors and products of the conversion of adrenalin, histohormones (for example, gastrin, heparin, and secretin), and histamin, serotonin, and certain other biogenic amines.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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