kinin

(kī'nĭn)
n.
Any of various structurally related polypeptides, such as bradykinin, that act locally to induce vasodilation and contraction of smooth muscle.

[Short for BRADYKININ.]

n

One of a number of widely differing substances having pronounced and dramatic physiologic Q 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.

(kī'nĭn)
n.

Any of various polypeptides, such as bradykinin, that act locally to induce vasodilation and contraction of smooth muscle.

Any of a group of endogenous peptides that increase vascular permeability, elevate blood pressure, and induce smooth muscle contraction.

• venom k. — a peptide found in the venom of insects.