Urinary miR-26b as a potential biomarker for patients with sepsis-associated acute kidney injury: a Chinese population-based study

J. Zhang, C.-J. Wang, X.-M. Tang, Y.-K. Wei

Clinical Laboratory, 3201 Hospital, Hanzhong, Shaanxi, China. 1427677323@qq.com

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• Nephrology

OBJECTIVE: Acute kidney injury (AKI) is common in critically ill patients, and sepsis patients with AKI had a higher mortality rate. The aim of the present study was to determine the potential value of urinary miR-26b in the diagnosis of sepsis-associated AKI.

PATIENTS AND METHODS: Urinary samples were collected from a cohort of 155 sepsis patients (68 AKI patients and 87 non-AKI patients) and 57 patients with non-infectious systemic inflammatory response syndrome (SIRS). The expression levels of urinary miR-26b were measured by RT-qPCR analysis. ROC curve analysis was performed to determine the diagnostic value. Pearson correlation analysis was performed to assess the levels of urinary miR-26b and several clinical parameters. Kaplan-Meier curves were plotted to show the impact of urinary miR-26b on the 28-day survival.

RESULTS: Significantly increased urinary miR-26b levels were found in patients with sepsis-associated AKI. Urinary miR-26b had a sensitivity of 90.8% and specificity of 75.0% for distinguishing between AKI sepsis and non-AKI sepsis. Urinary miR-26b levels were closely correlated with clinical parameters reflecting the severity of the disease. Kaplan-Meier analysis revealed that sepsis patients with high urinary miR-26b levels had an elevated mortality rate.

CONCLUSIONS: Taken together, these findings suggested that urinary miR-26b might be utilized as a potential biomarker for sepsis-associated AKI.

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