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The Sound of Evolution
Bumetanide
Mechanism of action:
Bumetanide is a loop diuretic and a sulfonamide derivative. In the thick ascending limb of Henle's loop in the kidney, the Na⁺-K⁺-2Cl⁻ cotransporter is responsible for transporting these three ions from the tubular lumen into tubular epithelial cells. Bumetanide binds to this transporter protein and inhibits the reabsorption of Na⁺, K⁺, and Cl⁻, thereby increasing sodium and water excretion and affecting body fluid volume and blood pressure regulation.
Reference(s):
Zhao et al. (2022). Structural basis for inhibition of the Cation‑chloride cotransporter NKCC1 by bumetanide. Nature Communications.
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