Summary
Cefodizime is a bactericidal cephem with the typical broad spectrum activity of an aminothiazolyl cephalosporin, including both gram-positive and gram-negative bacteria: its MIC90 is 0.125 mg/l forStreptococcus pneumoniae, Streptococcus pyogenes and other streptococci; and 0.05 mg/l forHaemophilus spp.,Neisseria meningitidis, Neisseria gonorrhoeae andMoraxella catarrhalis; while β-lactamase positive strains ofM. catarrhalis require 1 mg/l. Less than 1 mg/l is needed forEscherichia coli, Klebsiella spp.,Proteus spp. andShigella spp. The MIC90 is 4 mg/l for methicillin-sensitiveStaphylococcus aureus, Morganella morganii, Providencia spp. and most strains ofSerratia marcescens, Citrobacter spp. andEnterobacter spp.Staphylococcus epidermidis, Enterococcus faecalis and most strains ofPseudomonas spp. andAcinetobacter spp. are considered cefodizime-resistant. Cefodizime is unaffected by plasmid-mediated β-lactamases, but it is hydrolyzed by some chromosomally mediated enzymes, thus resembling other third-generation cephalosporins. Cefodizime has high affinity for PBP 3 and PBP IA and IB (Escherichia coli); inS. aureus it shows the highest affinity for PBP 1.
Zusammenfassung
Cefodizim ist ein bakterizides Cephem mit dem typischen breiten Spektrum eines Aminothiazolyl-Cephalosporins, das sowohl grampositive als auch gramnegative Bakterien einschließt: Die MHK90 beträgt 0,125 mg/l gegenüberStreptococcus pneumoniae, Streptococcus pyogenes und anderen Streptokokken. Sie liegt fürHaemophilus spp.,Neisseria meningitidis, Neisseria gonorrhoeae undMoraxella catarrhalis bei 0,05 mg/l. β-Laktamase positive Stämme vonM. catarrhalis benötigen 1 mg/l. Weniger als 1 mg/l wird fürEscherichia coli, Klebsiella spp.,Proteus spp. undShigella spp. benötigt; die MHK90 beträgt 4 mg/l gegenüber Methicillin-empfindlichen Stämmen vonStaphylococcus aureus, sowie gegenMorganella morganii, Providencia spp., die meisten Stämme vonSerratia marcescens, Citrobacter spp. undEnterobacter spp. Als Cefodizim-resistent sindStaphylococcus epidermidis, Enterococcus faecalis sowie die Mehrzahl der Stämme vonPseudomonas spp. undAcinetobacter spp. anzusehen. Cefodizim wird von plasmidgebundenen β-Laktamasen nicht angegriffen, wie andere Cephalosporine der dritten Generation wird es aber von einigen chromosomal gebundenen β-Laktamasen hydrolysiert. Cefodizim besitzt eine hohe Affinität zu PBP 3 sowie PBP IA und IB (Escherichia coli); beiS. aureus entfaltet es seine höchste Affinität zu PBP 1.
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Knothe, H., Shah, P.M. In vitro activity of cefodizime. Infection 20 (Suppl 1), S3–S8 (1992). https://doi.org/10.1007/BF01709942
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DOI: https://doi.org/10.1007/BF01709942