Elevated levels of renalase, the β-nad(P)h isomerase, can be used as risk factors of major adverse cardiovascular events and all-cause death in patients with chronic kidney disease

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Abstract

Background: Renalase is an enzyme and a cytokine involved in cell survival. Since its discovery, associations between it and both cardiovascular and kidney disease have been noted. Recognizing this, we conducted a study in which we followed patients with chronic kidney disease. Material and methods: The study involved 90 CKD patients with varying stages of the disease and 30 healthy controls. Renalase was measured with an ELISA kit, and patients were followed-up after a median of 18 months. During the follow-up, we asked about the occurrence of MACE, all-cause mortality and the need for dialysis initiation. Results: In CKD subgroups, RNSL correlated with all-cause death only in the HD group (Rs = 0.49, p < 0.01). In the whole CKD population, we found a positive correlation of RNSL concentration and both MACE occurrence (Rs = 0.38, p < 0.001) and all-cause death (Rs = 0.34, p < 0.005). There was a significant increase in MACE occurrence probability in patients with elevated renalase levels (>25 μg/mL). Conclusions: Elevated renalase levels can be used as a risk factor of MACE in patients with CKD, but its long-term utility needs further research. High renalase levels are a risk factor of death among CKD patients. In HD patients, all deaths were observed among patients with >30 μg/mL; this level could be used as a “red flag” marker in future studies.

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Knop, W., Serwin, N. M., Cecerska-Heryć, E., Grygorcewicz, B., Dołęgowska, B., Gomółka, A., … Ciechanowski, K. (2021). Elevated levels of renalase, the β-nad(P)h isomerase, can be used as risk factors of major adverse cardiovascular events and all-cause death in patients with chronic kidney disease. Biomolecules, 11(10). https://doi.org/10.3390/biom11101514

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