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Diagnostic value of elastase-alpha 1-proteinase inhibitor in cerebrospinal fluid
C P Speer1, C Rocchetti, M Rethwilm
1Department of Pediatrics, University of Göttingen, West Germany.
Abstract:
In this report we introduce CSF Elastase-alpha 1-Proteinase inhibitor as a valuable indicator for differentiating bacterial meningitis from aseptic meningitis and other neurological disorders. All patients (n = 26) with bacterial meningitis had increased CSF concentrations of E-alpha 1-PI above the range of normal (range of reference values: 0.0-2.3 micrograms/l, n = 79; bacterial meningitis: 30-3490 micrograms/l, n = 26). Concentrations of E-alpha 1-PI in bacterial meningitis were significantly elevated when compared with those in aseptic meningitis (0.0-194 micrograms/l, n = 37), polyneuropathy (0-23 micrograms/l, n = 24) and cerebrovascular attack (0-23.2 micrograms/l, n = 17).
Insights
Cerebrospinal fluid Elastase-alpha 1-Proteinase inhibitor (E-alpha 1-PI) levels can differentiate bacterial meningitis from other neurological conditions. Elevated E-alpha 1-PI concentrations are a key indicator of bacterial meningitis.
Area of Science:
- Neurology
- Clinical Chemistry
- Infectious Diseases
Background:
- Bacterial meningitis requires rapid and accurate diagnosis to prevent severe neurological sequelae.
- Differentiating bacterial meningitis from aseptic meningitis and other neurological disorders can be challenging.
- Cerebrospinal fluid (CSF) biomarkers may aid in differential diagnosis.
Purpose of the Study:
- To evaluate the diagnostic utility of CSF Elastase-alpha 1-Proteinase inhibitor (E-alpha 1-PI) in distinguishing bacterial meningitis from other neurological conditions.
- To establish reference ranges for E-alpha 1-PI in healthy individuals and patients with various neurological disorders.
Main Methods:
- Measurement of CSF E-alpha 1-PI concentrations using established laboratory techniques.
- Comparison of E-alpha 1-PI levels in patients with confirmed bacterial meningitis against those with aseptic meningitis, polyneuropathy, and cerebrovascular attack.
- Statistical analysis to determine the significance of observed differences.
Main Results:
- All patients (n=26) with bacterial meningitis exhibited elevated CSF E-alpha 1-PI levels, significantly exceeding the normal reference range (0.0-2.3 µg/l).
- Bacterial meningitis cases showed markedly higher E-alpha 1-PI concentrations (30-3490 µg/l) compared to aseptic meningitis (0.0-194 µg/l), polyneuropathy (0-23 µg/l), and cerebrovascular attack (0-23.2 µg/l).
Conclusions:
- CSF E-alpha 1-PI is a sensitive and specific biomarker for the diagnosis of bacterial meningitis.
- Elevated E-alpha 1-PI levels in CSF effectively differentiate bacterial meningitis from aseptic meningitis and other neurological disorders.
- This biomarker holds potential for improving diagnostic accuracy and guiding treatment decisions in suspected meningitis cases.