Human liver-expressed antimicrobial peptide 2 elevation in the cerebrospinal fluid in bacterial meningitis

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  • Human liver‐expressed antimicrobial peptide 2 elevation in the cerebrospinal fluid in bacterial meningitis

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Objective: To study the presence of liver-expressed antimicrobial peptide 2 (LEAP2) in human cerebrospinal fluid (CSF) and to measure its concentrations in neurologicaldisorders. Materials & Methods: We identified the presence of LEAP2 in human CSF by chro-matographic analysis and a LEAP2-specific enzyme immunoassay. We measured LEAP2 concentrations in the CSF of 35 patients with neurological disorders. Results: CSF LEAP2 concentrations in the bacterial meningitis group (mean ±SD, 9. 32± 3.76 ng/ml) were significantly higher (p< .05) than those in the other four groups (psychosomatic disorder, 0.56± 0.15 ng/ml; peripheral autoimmune dis-ease, 1.00 ± 0.60 ng/ml; multiple sclerosis, 0.62± 0.30 ng/ml; aseptic meningitis, 1.59± 0.69 ng/ml). Conclusions: This is the first study to identify the presence of human LEAP2 in the CSF. Levels of LEAP2 were increased in the CSF of patients with bacterial meningitis. LEAP2 may have potential as a biomarker for bacterial meningitis.

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