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Host defense and antimicrobial therapy in adult gram-negative bacillary meningitis

J J Rahal, M S Simberkoff

    Annals of Internal Medicine
    |April 1, 1982
    PubMed

    Insights

    Newer cephalosporins like moxalactam offer effective treatment for gram-negative bacillary meningitis, overcoming antibiotic resistance and poor drug penetration. Combination therapy is recommended for specific resistant pathogens like Pseudomonas aeruginosa.

    Area of Science:

    • Infectious Diseases
    • Neuroscience
    • Pharmacology

    Background:

    • Aerobic gram-negative bacillary meningitis presents therapeutic challenges due to antibiotic resistance and poor cerebrospinal fluid penetration.
    • Host immune response in meningitis is often impaired by complement deficiency and low opsonic activity, necessitating bactericidal antibiotics.

    Purpose of the Study:

    • To evaluate the efficacy of newer antibiotic agents for treating aerobic gram-negative bacillary meningitis.
    • To identify optimal therapeutic strategies considering antibiotic penetration and bactericidal activity.

    Main Methods:

    • Review of existing literature and clinical trial data on antibiotic efficacy in meningitis.
    • Assessment of antibiotic diffusion into cerebrospinal fluid and in vitro bactericidal activity.
    • Evaluation of therapeutic regimens including cephalosporins, chloramphenicol, and aminoglycosides.

    Main Results:

    • Moxalactam and cefotaxime demonstrate good cerebrospinal fluid diffusion and potent bactericidal activity.
    • Moxalactam shows promise as a primary treatment for enteric gram-negative bacillary meningitis in adults.
    • Combination therapy (intravenous ticarcillin and aminoglycoside plus intrathecal aminoglycoside) is effective for Pseudomonas aeruginosa and Acinetobacter meningitis.

    Conclusions:

    • Newer cephalosporins represent a significant advancement in treating gram-negative bacillary meningitis.
    • Tailored therapeutic approaches are essential, with specific regimens recommended for different pathogens and resistance profiles.

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