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Pathogenesis and pathophysiology of pneumococcal meningitis
Uwe Koedel1, William Michael Scheld, Hans-Walter Pfister
1UK and H-WP are at the Department of Neurology, Klinikum Grosshadern, Ludwig-Maximilians-University, Munich, Germany
The Lancet. Infectious Diseases
|December 7, 2002
Summary
Acute bacterial meningitis, once fatal, is now treatable but causes severe central nervous system complications. Targeting inflammatory pathways shows promise for new adjunctive therapies.
Area of Science:
- Neurology
- Infectious Diseases
- Immunology
Background:
- Acute bacterial meningitis was a leading cause of death before antibiotics.
- While curable, it can lead to severe central nervous system (CNS) complications.
- Pathophysiological mechanisms of CNS damage in meningitis are increasingly understood.
Purpose of the Study:
- To review the mechanisms of CNS damage in bacterial meningitis.
- To explore novel therapeutic targets for adjunctive treatment.
Main Methods:
- Review of neuropathological and clinical studies.
- Analysis of experimental studies using animal models.
- Examination of the role of inflammatory mediators.
Main Results:
- Fatal outcomes are often linked to CNS complications like brain edema and seizures.
- Cytokines, chemokines, proteolytic enzymes, and oxidants drive the inflammatory cascade.
- Targeting these inflammatory pathways has shown benefit in experimental models.
Conclusions:
- Inflammatory pathways are key contributors to tissue destruction in bacterial meningitis.
- Genetic or pharmacological blockade of these pathways offers potential adjunctive treatments.
- Targeted therapies, beyond dexamethasone, hold promise for improving patient outcomes.