Diagnostic and prognostic value of serum hepcidin concentration in patients with acute spontaneous supratentorial intracerebral hemorrhage
Keywords:cerebral hemorrhage, hepcidin, prognosis
The aim of the study was to evaluate the diagnostic and prognostic value of serum hepcidin concentration in patients with acute spontaneous supratentorial intracerebral hemorrhage (SSICH).
Materials and methods. Prospective cohort study of 88 patients with acute SSICH receiving the conservative therapy was conducted. Level of neurological deficit was evaluated using the Full Outline of UnResponsiveness Scale, the Glasgow Coma Scale and the National Institute of Health Stroke Scale. Computed tomography was performed to detect an intracerebral hemorrhage volume (ICHV), secondary intraventricular hemorrhage volume (SIVHV) and total volume of intracranial hemorrhage (TVICH). Laboratory blood samples were taken within 24 hours of hospitalization. Hepcidin levels, serum iron concentrations and total iron-binding capacity were determined, followed by calculations of transferrin saturation coefficient. Early neurological deterioration (END) and unfavorable variants of the acute period of SSICH (lethal outcome, modified Rankin score 4-5 on the 21st day of the disease) were considered as endpoints. Statistical processing of the obtained results included a correlation analysis, logistic regression analysis and ROC-analysis.
Results. It was identified, that serum hepcidin level in the patients with SSICH was correlated with ICHV (R = 0.44, P ˂ 0.01), SIVHV (R = 0.45, P ˂ 0.01) and TVICH (R = 0.57, P ˂ 0.01). Hepcidin serum concentrations in the patients with ICHV >30 ml exceeded the value of those in cases of ICHV ≤30 ml by 69.0 % (P ˂ 0.0001). Serum levels of hepcidin were significantly higher in the patients with an unfavorable course and outcome of the disease in the acute period on the 1st day of admission (P ˂ 0.0001). Informative multipredictor models were developed via multiple logistic regression analysis, which include hepcidin values coupled with clinical and neurovisualization findings and are predictive of lethal and unfavorable acute period functional outcomes (AUC = 0,93, P ˂ 0.0001).
Conclusions. The level of serum hepcidin in patients with acute SSICH is associated with the severity of cerebral lesions. The integration of serum hepcidin concentration with clinical and neuroimaging findings in the structure of multipredictor logistic regression models allows to determine the vital and functional prognosis of the acute period of SSICH with an accuracy of >85 %
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