Levels of renalase and advanced oxidation protein products with regard to catecholamines in haemodialysed patients

Marcin Dziedzic 1, Ewelina Orłowska 2, Beata Petkowicz 3, Anna Bednarek-Skublewska 2, Janusz Solski 1, Małgorzata Goździewska 4
1 - Department of Laboratory Diagnostic, Medical University of Lublin, Poland
2 - Department of Nephrology, Medical University of Lublin, Poland
3 - Department of Oral Medicine, Medical University of Lublin, Poland
4 - Institute of Rural Health, Lublin, Poland
Ann Agric Environ Med

ICID: 1233567
Article type: Original article
 
 
Abstract
Introduction
. The main mediators of the sympathetic nervous system in the effectors part are catecholamines (CA). An increased sympathetic nerve activity observed in chronic kidney disease (CKD), is due to a raised level of CA in plasma. Renalase is a protein secreted by the kidneys, composed of 342 amino acids, which is able to metabolize the circulating CA and possibly play an important role in the regulation of sympathetic tone and blood pressure. Also, oxidative stress, defined as a disruption of the equilibrium between the generation of oxidants, is a crucial factor in the development of the inflammatory syndrome associated with CKD. The advanced oxidation protein products (AOPP) represent exquisite markers of phagocyte-derived oxidative stress.
Objective. The aim of the study was to investigate the concentration of renalase and explore the associations between AOPP with regards to CA in haemodialysis (HD) patients.
Materials and Method. The study was conducted among 50 residents of the municipality and neighbouring villages in the province of Lublin, central-eastern Poland.
Results. In the studied patients, it was found that an average concentration of renalase was 44.8 ± 6.5 μg/mL, whereas of AOPP plasma levels – 57.5 ± 21.5 μmol/L. The results demonstrated the correlation between levels of renalase and AOPP in the HD patients. Indeed, elevated levels of renalase and AOPP in HD may be due to the presence of uremic toxins in blood. The concentration of urea affects the plasma concentrations of AOPP and renalase causing a direct relationship between renalase and AOPP. However, there is no clear relationship between renalase and circulating catecholamines in HD patients
DOI: 10.5604/12321966.1233567
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