Serum sirtuin 1 is independently associated with intact pth among patients with chronic kidney disease

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Abstract

Background: Sirtuin 1 is involved in the pathogenesis of age-related diseases. Purpose: The aim of the study was to assess the clinical and diagnostic value of serum sirtuin 1 concentration in patients with CKD. Patients and Methods: The serum sirtuin 1 level was evaluated using ELISA kit in 100 CKD patients stratified for five stages and in a control group of 24 healthy volunteers. Results: Serum sirtuin 1 concentration was higher in the CKD group compared with the control group (p<0.05). Sirtuin 1 correlated with conventional CKD biomarkers and eGFR equations, intact parathyroid hormone (iPTH) and age (all p<0.05). Statins, AT1 receptor antagonists and β-blockers use were associated with decreased sirtuin concentration (p<0.05). Sirtuin 1 was able to distinguish CKD from control group with high sensitivity and specificity (93% and 87%, respectively; AUC=0.954). Surprisingly, after adjustment only iPTH concentration was an independent predictor of sirtuin 1 level. Conclusion: The association between sirtuin 1, eGFR equations and iPTH indicates its possible usefulness as a kidney function marker. In terms of iPTH being the only independent predictor of circulating sirtuin 1 it can be considered as an indirect cardiovascular risk biomarker regardless of renal function and provide additional information for patient man-agement. Alternatively, sirtuin 1 is recognized as protective against vascular disease, and we demonstrated a positive correlation with iPTH, which may be related to accumulation of (7-84)-PTH having opposite biological effects to full-length PTH. Further studies are needed to explore the interplay between sirtuin 1, PTH and CKD-related vascular calcification as well as to assess its prognostic value in observational studies.

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Bielach-Bazyluk, A., Zbroch, E., Czajkowska, K., Koc-Zorawska, E., Kakareko, K., Rosolowska, A. R., & Hryszko, T. (2021). Serum sirtuin 1 is independently associated with intact pth among patients with chronic kidney disease. Clinical Interventions in Aging, 16, 525–536. https://doi.org/10.2147/CIA.S293665

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