bradykinin

chemical compound

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June 22, 2026

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Bradykinin is a kinin, a type of chemical compound composed of nine amino acid residues. It is formed locally in injured tissues and plays a role in inflammatory processes. Bradykinin acts as a vasodilator, widening small arterioles. It is also involved in the renal system, where it is produced by the enzyme kallikrein and contributes to vasodilation, potentially influencing renal blood flow. Bradykinin is one of the chemical substances that can excite pain receptors.123

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hormone
Endocrine-like glands and secretions
…the blood and perhaps elsewhere; bradykinin, for example, causes contraction of most smooth muscles and has a very potent action in dilating certain blood vessels. Its function, which is not yet established, may be to regulate the rate of blood flow or to participate in the inflammatory response of an…
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…the blood and perhaps elsewhere; bradykinin, for example, causes contraction of most smooth muscles and has a very potent action in dilating certain blood vessels. Its function, which is not yet established, may be to regulate the rate of blood flow or to participate in the inflammatory response of an…
Read More

renal system
The role of hormones in renal function
…the conversion of kininogen to bradykinin, which is also a powerful vasodilator. Bradykinin is inactivated by a kininase, which also converts angiotensin I to angiotensin II, a substance that causes the constriction of blood vessels. Thus the same enzyme that inactivates the vasodilator bradykinin catalyzes the production of the vasoconstrictor…
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…the conversion of kininogen to bradykinin, which is also a powerful vasodilator. Bradykinin is inactivated by a kininase, which also converts angiotensin I to angiotensin II, a substance that causes the constriction of blood vessels. Thus the same enzyme that inactivates the vasodilator bradykinin catalyzes the production of the vasoconstrictor…
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