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Cerebrospinal fluid and serum lysozyme activity in bacterial and viral meningitis
Abstract:
Cerebrospinal fluid (CSF) and serum lysozyme concentrations were determined in infants and children with and without acute infectious disease of the central nervous system. Serum lysozyme values from patients with bacterial and viral meningitis were found within the normal range. Lysozyme activity was absent or very low (below 0.5 microgram/ml) in normal CSF. High levels (4-12 microgram/ml) in patients with viral meningitis. A decrease of the lysozyme activity coincided with the clinical improvement of the bacterial meningitis. The lysozyme activity in CSF should be of significant value in detecting an inflammatory disease of the central nervous system.
Insights
Cerebrospinal fluid (CSF) lysozyme levels can help diagnose central nervous system infections in children. Elevated CSF lysozyme indicates viral meningitis, while decreasing levels suggest recovery from bacterial meningitis.
Area of Science:
- Biochemistry
- Pediatric Infectious Diseases
- Neurology
Background:
- Lysozyme is an enzyme with antimicrobial properties.
- Its role in central nervous system (CNS) infections, particularly in pediatric populations, requires further elucidation.
- Understanding lysozyme concentrations in cerebrospinal fluid (CSF) and serum may offer diagnostic insights.
Purpose of the Study:
- To investigate the diagnostic utility of cerebrospinal fluid (CSF) and serum lysozyme concentrations.
- To differentiate between bacterial and viral meningitis in infants and children.
- To correlate lysozyme activity with clinical outcomes in CNS infections.
Main Methods:
- Measurement of lysozyme concentrations in CSF and serum samples.
- Analysis of samples from pediatric patients with and without acute infectious CNS diseases.
- Comparison of lysozyme levels between patient groups and healthy controls.
Main Results:
- Serum lysozyme levels were within the normal range for patients with bacterial and viral meningitis.
- Normal CSF lysozyme activity was absent or very low (<0.5 µg/ml).
- Elevated CSF lysozyme levels (4-12 µg/ml) were observed in viral meningitis, and decreasing activity correlated with clinical improvement in bacterial meningitis.
Conclusions:
- CSF lysozyme activity is a valuable indicator for detecting inflammatory CNS diseases in children.
- Lysozyme levels in CSF can aid in differentiating viral from bacterial meningitis.
- Monitoring CSF lysozyme may assist in assessing treatment response and clinical recovery.