ArticleJournal of bone and mineral metabolism2026
Evocalcet improved the PTH-calcium setpoint and suppressed parathyroid proliferation in mice model of primary hyperparathyroidism.
Article in Journal of bone and mineral metabolism, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundEvocalcet is an allosteric modulator of the calcium-sensing receptor (CaSR) that effectively suppresses parathyroid hormone (PTH) secretion in both primary and secondary hyperparathyroidism. However, its effects on the PTH-calcium setpoint and parathyroid cell proliferation remain unclear.
methodsWe investigated these effects using the PC mouse model of primary hyperparathyroidism, which is characterized by parathyroid-targeted cyclin D1 overexpression . Evocalcet was administered orally at a dose of 0.025 mg/g diet. The PTH-calcium setpoint was evaluated, and the antiproliferative effect of evocalcet on parathyroid cells was assessed using 5-bromo-2'-deoxyuridine (BrdU) incorporation assays. The effects of evocalcet were compared with those of cinacalcet. Expression levels of the vitamin D receptor (VDR) and CaSR in parathyroid glands were also examined.
resultsEvocalcet significantly reduced the PTH-calcium setpoint in PC mice, restoring it to levels comparable to those observed in wild-type controls. Evocalcet treatment markedly decreased the proportion of BrdU-positive parathyroid cells, indicating suppression of parathyroid cell proliferation. This antiproliferative effect was comparable to that observed with cinacalcet. Neither evocalcet nor cinacalcet altered VDR or CaSR expression in the parathyroid glands.
conclusionsEvocalcet, similar to cinacalcet, lowers the PTH-calcium setpoint and inhibits parathyroid cell proliferation in a mouse model of primary hyperparathyroidism. These findings suggest that evocalcet may not only reduce PTH secretion but also attenuate disease progression in hyperparathyroidism.
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