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. 1983 Nov;24(5):682–688. doi: 10.1128/aac.24.5.682

Evaluation of aztreonam in experimental bacterial meningitis and cerebritis.

W M Scheld, J P Brodeur, J C Gratz, P Foresman, G Rodeheaver
PMCID: PMC185925  PMID: 6362552

Abstract

Aztreonam (SQ 26,776), a new monocyclic beta-lactam agent, was compared with ampicillin, ampicillin plus chloramphenicol, and gentamicin in rabbits with experimental meningitis induced by, respectively, ampicillin-susceptible Haemophilus influenzae, ampicillin-resistant H. influenzae, and Escherichia coli. Aztreonam was also compared with gentamicin in experimentally induced E. coli cerebritis in rats. Doses of the various agents were delivered that produced near-peak concentrations in serum comparable to those attained in humans on standard parenteral regimens. The percent penetration [( concentration in cerebrospinal fluid/concentration in serum] X 100) of aztreonam into purulent rabbit cerebrospinal fluid was 23% (versus 12, 27, and 21%, respectively, for ampicillin, chloramphenicol, and gentamicin). In experimental meningitis in vivo, aztreonam was more rapidly bactericidal than was ampicillin in ampicillin-susceptible H. influenzae meningitis, ampicillin or chloramphenicol in ampicillin-resistant H. influenzae meningitis, or gentamicin in E. coli meningitis. In the therapy of experimental cerebritis, the early stage of brain abscess formation, aztreonam reduced the numbers of E. coli in rat brain as rapidly as did gentamicin. Aztreonam deserves further evaluation in acute gram-negative bacterial infections of the central nervous system in both experimental animals and in humans.

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Selected References

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