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Pakistan Journal of Biological Sciences
Year: 2016  |  Volume: 19  |  Issue: 4  |  Page No.: 185 - 190

Measurement of Interleukin-6 in Cerebrospinal Fluid for the Diagnosis of Bacterial Meningitis

Ibrahim Dan Dano, Hassimi Sadou, Bassira Issaka and Odile Ouwe Missi Oukem-Boyer    

Abstract: Objective: It is assessed whether the measurement of interleukin-6 in the cerebrospinal fluid can serve as a biomarker for the diagnosis of bacterial meningitis. Methodology: Cerebrospinal fluid was obtained from 152 patients aged 0-15 years suspected of having meningitis. These patients were classified into the following groups: Bacterial meningitis (n = 85), aseptic meningitis (n = 35) and non-meningitis/control (n = 32) based on leukocyte count and bacterial identification by culture and molecular biology. Interleukin-6 concentrations in cerebrospinal fluid were measured by enzyme-linked immunosorbent assay. Results: This study found a significant difference of the mean cerebrospinal fluid interleukin-6 level (p≤0.01) between patients with bacterial meningitis (3,538.69±2,560.78 pg mL–1) and patients with aseptic meningitis (332.51±470.69 pg mL–1) or those of the control group (205.83±79.39 pg mL–1). There was also a significant difference of the mean cerebrospinal fluid interleukin-6 level between patients with aseptic meningitis and those of the control group. Interleukin-6 had the highest area under the ROC curve: 0.94 (95% confidence interval: 0.901-0.979) compared to that of cerebrospinal fluid glucose and total protein. At a cut-off value of 1,065.96 pg mL–1, interleukin-6 had a sensitivity of 76.2% and specificity of 100%. Conclusion: Interleukin-6 is a potential biomarker for the differential diagnosis of meningitis.

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