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Antimicrobial Agents and Chemotherapy logoLink to Antimicrobial Agents and Chemotherapy
. 1974 Oct;6(4):437–441. doi: 10.1128/aac.6.4.437

Effect of Probenecid on Cerebrospinal Fluid Concentrations of Penicillin and Cephalosporin Derivatives

Ralph G Dacey 1, Merle A Sande 1
PMCID: PMC444667  PMID: 4157341

Abstract

Probenecid may elevate the cerebrospinal fluid (CSF) concentration of penicillin G by inhibiting the excretion of organic acids from CSF. We have studied this phenomenon with various penicillin and cephalosporin derivatives. Penicillin concentrations were determined in rabbits under steady-state conditions before and after intravenous probenecid administration. With both low-dose and high-dose probenecid, CSF penicillin levels increased two to three times as did CSF concentration as a percentage of serum level. The same probenecid effect was consistently demonstrated in animals with experimental pneumococcal meningitis. Probenecid likewise increased the CSF concentration of ampicillin, carbenicillin, nafcillin, cephacatrile, and cefazolin. Probenecid may prove useful in certain bacterial infections where high CSF antibiotic levels are necessary.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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Articles from Antimicrobial Agents and Chemotherapy are provided here courtesy of American Society for Microbiology (ASM)

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