Biomarkers of cardiovascular remodeling in patients on peritoneal dialysis

Area of Science:

• Nephrology
• Cardiovascular Medicine
• Biochemistry

Background:

• Cardiovascular complications are a major concern for patients undergoing peritoneal dialysis (PD).
• Endothelin-1 (ET-1) and nitric oxide (NO) play crucial roles in regulating vascular tone and cardiovascular remodeling.
• Understanding their dynamics during PD is essential for managing cardiovascular risk.

Purpose of the Study:

• To measure serum ET-1 and NO levels before and after 1 year of PD.
• To assess the association between ET-1, NO, and cardiovascular remodeling parameters (echocardiography, carotid artery ultrasound).
• To evaluate the influence of dialysis adequacy and residual renal function (RRF) on cardiovascular remodeling.

Main Methods:

• A cohort of 40 PD patients was studied.
• Serum ET-1 and NO concentrations were measured at baseline and after 12 months.
• Echocardiography and common carotid artery (CCA) ultrasound were performed to assess cardiovascular parameters.

Main Results:

• PD treatment significantly decreased ET-1 and increased NO levels (p < 0.01).
• Significant reductions in left ventricular mass index (LVMI), CCA intima-media thickness (IMT), and plaque score were observed after 12 months (p < 0.001).
• Dialysis adequacy and RRF were significantly associated with improvements in LVMI and CCA IMT.

Conclusions:

• PD treatment favorably alters ET-1 and NO levels.
• Both ET-1 and NO are independently related to cardiovascular remodeling in PD patients.
• Dialysis adequacy and RRF are important factors influencing cardiovascular adaptation during PD.