Sunday, October 19, 2025

Calcimimetic R-568 and Its Enantiomer S-568 Increase Nitric Oxide Release in Human Endothelial Cells

Authors: Mario Bonomini, Annalisa Giardinelli, Caterina Morabito, Sara Di Silvestre, Moreno Di Cesare, Natalia Di Pietro, Vittorio Sirolli, Gloria Formoso, Luigi Amoroso, Maria Addolorata Mariggiò, Assunta Pandolfi

DOI: 10.1371/journal.pone.0030682

Abstract Summary

Calcimimetics like R-568, used to treat hyperparathyroidism, may benefit blood vessels through mechanisms independent of their primary calcium-sensing receptor (CaSR) target. Research on human endothelial cells revealed that while CaSR protein is present, functional receptors are largely absent. Both R-568 and its mirror form increased intracellular calcium and nitric oxide release equally—suggesting CaSR-independent vascular effects.

Why Brain? 🧠

Calcimimetics used to treat hyperparathyroidism increase nitric oxide release in human endothelial cells through a mechanism independent of their known calcium-sensing receptor target, suggesting additional vascular benefits.


The image is AI-generated for illustrative purposes only. Courtesy of Midjourney.

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