kinin /ki·nin/ (ki´nin) any of a group of vasoactive straight-chain polypeptides formed by kallikrein-catalyzed cleavage of kininogens; causing vasodilation and also altering vascular permeability.
kinin
kinin
ki·nin (k  n n)n. Any of various polypeptides, such as bradykinin, that act locally to induce vasodilation and contraction of smooth muscle. |
kinin
[kī′nin]
any of a group of polypeptides with varying physiologic activity, such as contraction of visceral smooth muscle, vascular permeability, and vasodilation. Two principal kinins, bradykinin and lysylbradykinin, are formed in the blood from precursor kininogens by the action of kallikrein and kinases.
kinin
(kī´nin),
n a number of widely differing substances having pronounced and dramatic physiologic effects. Some are formed in blood by proteolysis secondary to some pathologic process. Kinins stimulate visceral smooth muscle but relax vascular smooth muscle, thus producing vasodilation. May be involved in periodontal disease.
n a number of widely differing substances having pronounced and dramatic physiologic effects. Some are formed in blood by proteolysis secondary to some pathologic process. Kinins stimulate visceral smooth muscle but relax vascular smooth muscle, thus producing vasodilation. May be involved in periodontal disease.
kinin
any of a group of endogenous peptides that increase vascular permeability, elevate blood pressure, and induce smooth muscle contraction.
venom kinin
a peptide found in the venom of insects.
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