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- W2798188082 abstract "Background The high cardiovascular morbidity and mortality of patients with CKD may result in large part from medial vascular calcification, a process promoted by hyperphosphatemia and involving osteo-/chondrogenic transdifferentiation of vascular smooth muscle cells (VSMCs). Reduced serum zinc levels have frequently been observed in patients with CKD, but the functional relevance of this remains unclear. Methods We performed experiments in primary human aortic VSMCs; klotho-hypomorphic ( kl/kl ), subtotal nephrectomy, and cholecalciferol-overload mouse calcification models; and serum samples from patients with CKD. Results In cultured VSMCs, treatment with zinc sulfate (ZnSO 4 ) blunted phosphate-induced calcification, osteo-/chondrogenic signaling, and NF- κ B activation. ZnSO 4 increased the abundance of zinc-finger protein TNF- α –induced protein 3 (TNFAIP3, also known as A20), a suppressor of the NF- κ B pathway, by zinc-sensing receptor ZnR/GPR39-dependent upregulation of TNFAIP3 gene expression. Silencing of TNFAIP3 in VSMCs blunted the anticalcific effects of ZnSO 4 under high phosphate conditions. kl/kl mice showed reduced plasma zinc levels, and ZnSO 4 supplementation strongly blunted vascular calcification and aortic osteoinduction and upregulated aortic Tnfaip3 expression. ZnSO 4 ameliorated vascular calcification in mice with chronic renal failure and mice with cholecalciferol overload. In patients with CKD, serum zinc concentrations inversely correlated with serum calcification propensity. Finally, ZnSO 4 ameliorated the osteoinductive effects of uremic serum in VSMCs. Conclusions Zinc supplementation ameliorates phosphate-induced osteo-/chondrogenic transdifferentiation of VSMCs and vascular calcification through an active cellular mechanism resulting from GPR39-dependent induction of TNFAIP3 and subsequent suppression of the NF- κ B pathway. Zinc supplementation may be a simple treatment to reduce the burden of vascular calcification in CKD." @default.
- W2798188082 created "2018-04-24" @default.
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- W2798188082 date "2018-04-13" @default.
- W2798188082 modified "2023-10-10" @default.
- W2798188082 title "Zinc Inhibits Phosphate-Induced Vascular Calcification through TNFAIP3-Mediated Suppression of NF-κB" @default.
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- W2798188082 doi "https://doi.org/10.1681/asn.2017050492" @default.
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