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angiotensin

[ an-jee-oh-ten-sin ]

noun

, Biochemistry.
  1. any of three oligopeptides occurring in plasma, an inactive form angiotensin I and two varieties angiotensin II and angiotensin III that elevate blood pressure and stimulate the adrenal cortex to secrete aldosterone.


angiotensin

/ ˌændʒɪəˈtɛnsɪn /

noun

  1. a peptide of physiological importance that is capable of causing constriction of blood vessels, which raises blood pressure
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

angiotensin

/ ăn′jē-ō-tĕnsĭn /

  1. Any of three polypeptide hormones that function in the body in controlling arterial pressure. The most important is known as angiotensin II, a powerful vasoconstrictor that stimulates steroid production by the adrenal glands, reduces fluid loss from the kidneys, and also functions as a neurotransmitter. Angiotensin II is formed from inactive angiotensin I by the action of angiotensin-converting enzyme (or ACE ).
  2. See also ACE inhibitor
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Word History and Origins

Origin of angiotensin1

1960–65; probably blend of angiotonin + hypertensin , earlier names for the substances
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Word History and Origins

Origin of angiotensin1

from angio- + tense 1+ -in
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Example Sentences

ACE2's normal function in the body is to help regulate blood pressure; it cuts a protein called angiotensin II to make a derivative protein called angiotensin 1-7.

They block the formation of the hormone angiotensin II, which plays a central role in the development of high blood pressure.

However, the protein also negatively regulates the renin-angiotensin system which generates angiotensin II, a hormone that raises blood pressure in a number of ways, including by the constriction of blood vessels.

It may affect the angiotensin system that helps regulate blood pressure and blood flow, leading to more severe symptoms, Tartof said.

The virus can blunt the function of ACE2 receptors, which normally help protect heart cells and degrade angiotensin II, a hormone that increases blood pressure.

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