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Nataša Loga-Andrijić, N. Petrović, Snežana Filipović-Danić, Snežana Marjanović, V. Mitrović, S. Loga-Zec
0 2021.

Analysis of Serum Inflammatory Markers in Cognitive Impairment among Acute Ischaemic Stroke Patients.

BACKGROUND Previous studies have indicated that changes in the expression of certain inflammatory biomarkers are associated with cognitive impairment (CI), but only a limited number of studies were conducted in patients with acute ischemic stroke (AIS). The present study aimed to evaluate the potential association between serum levels of several inflammatory markers and cognitive impairment in AIS patients. These markers included interleukin 6 (IL-6), C-reactive protein (CRP), plasma fibrinogen, erythrocyte sedimentation rate (ESR), and white blood cell (WBC) count. SUBJECTS AND METHODS All participants were prospectively recruited from the Department of Neurology, Clinical Center University of Sarajevo. A total of 100 patients with first-ever AIS were included in stroke group and 30 in the non-stroke control group. Each patient underwent a comprehensive cognitive assessment and laboratory tests (IL-6, CRP, fibrinogen, ESR and WBC) within the first three days of admission. Cognitive status was assessed using cognitive instruments: the Mini-Mental State Examination, the Montreal Cognitive Assessment, the Frontal Assessment Battery, and the Addenbrooke's Cognitive Examination-Revised. RESULTS Female stroke patients with CI had higher levels of IL-6 compared to those without CI and controls (p<0.017). AIS patients with CI had significantly higher plasma fibrinogen (p<0.001) and CRP levels (p<0.001) than controls, whereas there was no significant difference in comparison with cognitively intact patients. There were no statistical differences in ESR or WBC count between groups. CONCLUSIONS Of the inflammatory markers, only IL-6 levels were associated with CI in AIS patients. Measuring circulating IL-6 could be used as a screening test to identify all such patients.


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