Abstract

Cardiovascular calcification (CVC) contributes to morbidity and mortality in patients undergoing dialysis. We examined the pharmacodynamic effects of SNF472, a calcification inhibitor, on plasma calcium phosphate crystallization using spectrometric measurements, and its correlations with effects on CVC in rats or humans. Rats (N = 38) injected with vitamin D (days 1–3) to induce CVC were infused with saline or SNF472 (days 1–12). Inhibition of CVC was 50–65% with SNF472 3 mg/kg and ~ 80% with SNF472 10 or 30 mg/kg. SNF472 dose-dependently inhibited calcium phosphate crystallization, which correlated with inhibition of CVC (r = 0.628, P = 0.005). In patients with calciphylaxis (N = 14), infusion of SNF472 (~ 7 mg/kg) during hemodialysis for 12 weeks inhibited calcium phosphate crystallization by nearly 70%. In patients with CVC (N = 274), infusion of SNF472 during hemodialysis for 52 weeks inhibited calcium phosphate crystallization (placebo: 15%; 300 mg: 61%; 600 mg: 75%), which correlated with inhibition of CVC (r = 0.401, P = 0.003). These findings show a direct correlation between inhibition of calcium phosphate crystallization in plasma and inhibition of CVC both in a rat model and in humans, supporting the use of the pharmacodynamic assay in clinical trials as a potentially predictive tool to evaluate the activity of calcification inhibitors.

Details

Title
A novel assay to measure calcification propensity: from laboratory to humans
Author
Mar, Perez M 1 ; Ferrer, Miguel D 2 ; Lazo-Rodriguez, Marta 3 ; Canals, Ana Zeralda 4 ; Banon-Maneus Elisenda 3 ; Campistol, Josep M 3 ; Miller, Stephan 5 ; Garg Rekha 6 ; Gold, Alex 7 ; Salcedo, Carolina 8 ; Perelló, Joan 9 

 Sanifit Therapeutics, Palma de Mallorca, Spain 
 Sanifit Therapeutics, Palma de Mallorca, Spain; University of the Balearic Islands, Department of Fundamental Biology and Health Sciences, Palma, Spain (GRID:grid.9563.9) (ISNI:0000 0001 1940 4767) 
 Fundació Clínic per a la Recerca Biomèdica, Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Barcelona, Spain (GRID:grid.428756.a) (ISNI:0000 0004 0412 0974); Spanish Kidney Research Network, ISCIII-RETIC REDinREN RD016/0 009, Madrid, Spain (GRID:grid.413448.e) (ISNI:0000 0000 9314 1427) 
 Sanifit Therapeutics, Palma de Mallorca, Spain (GRID:grid.413448.e) 
 Sanifit Therapeutics, San Diego, USA (GRID:grid.413448.e) 
 Sanifit Therapeutics, San Diego, USA (GRID:grid.413448.e); PharmaDRS Consulting, LLC, San Diego, USA (GRID:grid.413448.e) 
 Sanifit Therapeutics, San Diego, USA (GRID:grid.413448.e); Stanford University, Department of Medicine, Palo Alto, USA (GRID:grid.168010.e) (ISNI:0000000419368956) 
 Sanifit Therapeutics, Palma de Mallorca, Spain (GRID:grid.168010.e) 
 Sanifit Therapeutics, Palma de Mallorca, Spain (GRID:grid.168010.e); University of the Balearic Islands, Laboratory of Renal Lithiasis Research, Palma, Spain (GRID:grid.9563.9) (ISNI:0000 0001 1940 4767) 
Publication year
2020
Publication date
2020
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2489906727
Copyright
© The Author(s) 2020. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.