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A compound released in the blood in some circumstances that causes contraction of smooth muscle and dilation of blood vessels. It is a peptide comprising nine amino-acid residues.
- ‘Another component of the renin-angiotensin-aldosterone system is bradykinin, a vasoactive peptide metabolized by the same enzyme that converts angiotensin I to angiotensin II.’
- ‘This class of receptors includes the angiotensin, bradykinin and vasopressin receptors.’
- ‘The peptide subfamily of GPCR contains receptors that bind a disparate array of peptides, such as angiotensin, bradykinin, opioid, somatostatin, and chemokines.’
- ‘Vasodilators, such as acetylcholine and bradykinin, do not exert their effects upon the vascular smooth muscle cell in the absence of the overlying endothelium.’
- ‘The profile parallels that observed for bradykinin stimulated smooth muscle cells.’
1940s: from Greek bradus slow + kinēsis motion + -in.
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