AI Summary & Key Takeaways
AI InsightThe cutoff value of the disulfide/total thiol ratio to predict CIN on admission in patientswith STEMI who underwent primary PCI was 7, with a sensitivity of 68.2% and a specificity of 79.8%.CONCLUSION: Our results suggest that thiol/disulfide homeostasis could be a good biochemical risk marker for CIN inSTEMI patients who underwent primary PCI.
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Abstract
OBJECTIVE: Contrast-induced nephropathy (CIN) is a common complication of diagnostic or interventional procedures thatmay arise from administration of intravascular contrast media. Recent studies have reported the thiol-disulfide ratio as anovel oxidative stress marker. Therefore, we investigated the role of thiol levels in predicting CIN in patients with ST-segmentelevation myocardial infarction (STEMI) who had undergone primary percutaneous coronary intervention (PCI).METHODS: A total of 302 patients were enrolled in the study. CIN was defined as an increase in serum creatinine concentration ≥0.5 mg/dL compared with the admission value or a >25% relative rise during the first 48–72 hours after the procedure.To evaluate the relationship between thiol levels and CIN, the patients were divided into a CIN group and a non-CIN group.RESULTS: CIN occurred in 44 (15%) patients. Native thiol (274.8±84.7 μmol/L vs. 220.8±97.1 μmol/L, p=0.001) and total thiol (305.4±89.7 μmol/L vs. 260.1±102.1 μmol/L, p=0.009) levels were higher in patients within the non-CIN group.Disulfide (15.8±6.6 μmol/L vs. 19.6±8.4 μmol/L, p=0.002) levels, and mean disulfide/total thiol ratios (8.4±3.7 vs. 5.9±3.1,p=0.001) were higher in patients with CIN (+) group. In univariate analysis, the initial native thiol, total thiol, disulfide levels, and disulfide/total thiol ratio were found to have prognostic significance in the development of CIN. In the multivariateregression analysis, only the disulfide/total thiol ratio (OR=1.190; 95% CI: 1.090–1.300; p=0.001) was significantly andindependently associated with CIN. The cutoff value of the disulfide/total thiol ratio to predict CIN on admission in patientswith STEMI who underwent primary PCI was 7, with a sensitivity of 68.2% and a specificity of 79.8%.CONCLUSION: Our results suggest that thiol/disulfide homeostasis could be a good biochemical risk marker for CIN inSTEMI patients who underwent primary PCI.