bradykinin
noun
bra·dy·ki·nin
ˌbrā-di-ˈkī-nən 
: a kinin that is formed locally in injured tissue, acts in vasodilation of small arterioles, is considered to play a part in inflammatory processes, and is composed of a chain of nine amino acid residues
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In people with hereditary angioedema, stress, illness, or trauma can trigger high blood levels of bradykinin, producing severe swelling of limbs, the abdomen, or even the throat, which can suffocate a person.
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Byjocelyn Kaiser, science.org, 16 Sep. 2022
Dysregulation of the bradykinin system can cause blood vessels to essentially leak—which could explain why doctors were seeing patients with so much fluid in their lungs.
—Doug Strickland, Popular Mechanics, 6 Sep. 2021
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Byjocelyn Kaiser, science.org, 16 Sep. 2022
Dysregulation of the bradykinin system can cause blood vessels to essentially leak—which could explain why doctors were seeing patients with so much fluid in their lungs.
—Doug Strickland, Popular Mechanics, 6 Sep. 2021
Cite this Entry
“Bradykinin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bradykinin. Accessed 19 Sep. 2025.
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