The Relationship between Oxidative Stress and Coronary Artery Calcification in Patients Undergoing Peritoneal Dialysis or Hemodialysis

Son dönem böbrek yetersizliği (SDBY) gelişen hastalarda vasküler kalsifikasyon (VK) ve oksidatif stres yaygın olarak gözlenmektedir. SDBY’li hastalarda oksidatif stres belirteci olan nitrotirozin düzeyinin yüksek olduğu tespit edilmiştir. Çalışmamızın amacı periton diyaliz (PD) ve hemodiyaliz (HD) hastalarında koroner arter kalsifikasyonu ile oksidatif stres arasındaki ilişkiyi incelemektir. Çalışmamıza 46 PD ve 34 HD hastası alınmıştır. Hastalara multi slice bilgisayarlı tomografi ile koroner arter kalsiyum skorlaması (KAKS) yapıldı. KAKS değerlerine göre hastalar Grup 1 (KAKS 0), Grup 2 , Grup 3 ve Grup 4 (KAKS: ≥400) olmak üzere 4 gruba ayrıldı. Serumda nitrotirozin düzeyleri ölçüldü. PD hastalarıyla kıyaslandığında, HD hastalarının nitrotirozin düzeyi anlamlı olarak yüksekti. PD ve HD hastaları KAKS göre gruplara ayrıldığında PD hastalarında KAKS arttığında nitrotirozin düzeyi de anlamlı olarak artmaktaydı, halbuki bu ilişki HD hastalarında tespit edilemedi.PD hastalarında KAKS ile oksidatif stres arasında anlamlı bir ilişki mevcuttur

Anahtar Kelimeler:

Hemodiyaliz, periton diyalizi, oksidatif stres, vasküler kalsifikasyonu

The Relationship between Oxidative Stress and Coronary Artery Calcification in Patients Undergoing Peritoneal Dialysis or Hemodialysis

Vascular calcification and increased oxidative stress are commonly seen in patients with end-stage renal disease (ESRD). Nitrotyrosine is one of the end products of nitric oxide metabolism and is accepted as an indicator of oxidative stress. Nitrotyrosine levels have been found to be high in ESRD patients. The aim of our study is to investigate the relation between coronary artery calcification and oxidative stress in peritoneal dialysis (PD) and hemodialysis (HD) patients. 46 PD and 34 HD patients are included in the study. Coronary artery calcification scoring (CACS) is made by multi slice computed tomography. Patients are divided into 4 groups according to their CACS values as Group 1 (CACS: 0), Group 2 (CACS:1-99), Group 3 (CACS:100-399) and Group 4 (CACS: ≥400). Serum nitrotyrosine levels were measured. Nitrotyrosine levels were significantly increased in HD patients compared to PD patients. Nitrotyrosine levels were found to be elevated in accordance with increased CACS in PD patients. However, we could not find this relationship in HD patients. There might be an important relationship between CACS and oxidative stress in PD patients.

Keywords:

Hemodialysis, peritoneal dialysis, oxidative stress, vascular calcification,

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