Resumo

OZKAYAR, Nihal et al. Relation between serum cathepsin D levels and endothelial dysfunction in patients with chronic kidney disease. Nefrología (Madr.) [online]. 2015, vol.35, n.1, pp.72-79. ISSN 1989-2284.  https://dx.doi.org/10.3265/Nefrologia.pre2014.Oct.12609.

We aimed to investigate the role of cathepsin D, an inflammatory and atherosclerotic mediator, in endothelial dysfunction in chronic kidney disease. The study included 65 patients with stage 2-4 chronic kidney disease (35 females, 30 males; mean age, 55.8±15.6 years). Serum creatinine and cathepsin D levels and glomerular filtration rates (GFRs) were determined, and brachial flow-mediated dilation (FMD) percentage was measured by two-dimensional gray scale and color flow Doppler and vascular imaging. FMD ≤6% was considered to indicate endothelial dysfunction. Mean GFR, median creatinine levels, and median cathepsin D levels were 40.2±11.2mL/min/1.73m², 1.7mg/dL, and 819.75ng/mL, respectively. Endothelial dysfunction was present in 30 of the 65 patients (46.2%). There was a significant difference between groups with and without endothelial dysfunction in terms of cathepsin D (p=0.001) and creatinine (p=0.03) levels, and negative and significant correlations were found between brachial artery FMD% and cathepsin D (r=-0.359, p=0.003) and creatinine (r=-0.304, p=0.014) levels. Cathepsin D, which is known to be associated with atherosclerosis, may play a role in the process of endothelial dysfunction. Further studies are essential to determine the exact function of cathepsin D in endothelial dysfunction in chronic kidney disease and to determine its value as a tool for early diagnosis and target for treatment of cardiovascular diseases in patients with chronic kidney disease.

Palavras-chave : Brachial flow-mediated dilation; Chronic kidney disease (CKD); Endothelial dysfunction; Cathepsin D.

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