Cystatin C, but not urinary or serum NGAL, may be associated with contrast induced nephropathy after percutaneous coronary invasive procedures: A single center experience on a limited number of patients

Emanuele Cecchi, Gianfranco Avveduto, Maria Grazia D’Alfonso, Alessandro Terreni, Emma Gelera, Anna Caldini, Cristina Giglioli

Abstract


Objective. This study aimed to test the association of both the baseline values and post-procedural variations of urinary and serum Neutrophil Gelatinase-Associated Lipocalin (NGAL) and Cystatin C (CysC) with contrast induced nephropathy (CIN) occurrence in patients undergoing percutaneous coronary invasive procedures (PCIP), and compare them to serum creatinine and the estimated glomerular filtration rate (eGFR). Methods. In 43 patients admitted to our Cardiac Step-Down Unit and submitted to PCIP, we measured serum creatinine and eGFR as the standard markers for CIN diagnosis, and compared them to both serum and urinary NGAL as well as serum CysC, assessed before and 4 hours after PCIP. Results. Patients who developed CIN (16%) were older, with significantly higher discharge creatinine values, lower eGFR values at creatinine peak, and higher baseline and post-PCIP CysC values. We did not detect any significant association between baseline serum and urinary NGAL values and their 4 hour variations after contrast medium administration and CIN occurrence. Furthermore, we observed that the baseline values of both serum and urinary NGAL were significantly higher in patients with greater neutrophil count. Conclusion. In our population submitted to PCIP, neither baseline serum and urinary NGAL nor their variations after PCIP were related to CIN occurrence, while CysC results were associated with CIN development, earlier than creatinine and eGFR variations.


Keywords


Cystatin C; Neutrophil Gelatinase-Associated Lipocalin; Contrast induced nephropathy; Percutaneous coronary invasive procedures

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