Definition of "endothelin" [endothelin]

• A vasoconstricting oligopeptide that plays a key role in vascular homeostasis. (noun)

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• "The three drugs block a chemical called endothelin that causes blood vessels to constrict."
• "It is already proven that Walnuts have the ability to control the levels of endothelin, which is the primary cause for the inflammation of blood vessels."
• "Investigators also found elevated levels of a protein called endothelin-1."