bradykinin[brad′i kī′nin, -kin′in]
a kinin, CHNO, released from blood plasma by some snake venoms and certain other enzymes, which slows intestinal contractions, lowers blood pressure, etc.
Origin of bradykinin; from brady- + Classical Greek kinein, to move: see kinetic
A biologically active polypeptide, consisting of nine amino acids, that forms from a blood plasma globulin and mediates the inflammatory response, increases vasodilation, and causes contraction of smooth muscle.
Origin of bradykininbrady– + Greek kīnein, to move; see kei&schwa;- in Indo-European roots + –in.
(countable and uncountable, plural bradykinins)
- (biochemistry) One of the kinins, a nonapeptide that reduces blood pressure by dilating blood vessels.