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Published on: April 18, 2019
Ceftibuten: minimal inhibitory concentrations, postantibiotic effect and beta-lactamase stability--a rationale for
1Division of Infectious Diseases, College of Physicians and Surgeons of Columbia University, New York, NY 10032, USA.
Ceftibuten demonstrates broad-spectrum activity against key respiratory pathogens and Enterobacteriaceae. Its pharmacokinetic profile supports effective dosing regimens for oral administration.
Area of Science:
- Microbiology
- Pharmacology
- Infectious Diseases
Background:
- Ceftibuten is an orally absorbed cephalosporin antibiotic.
- It possesses a unique side chain conferring broad-spectrum antimicrobial activity.
Purpose of the Study:
- To evaluate the in vitro activity of ceftibuten against common respiratory pathogens.
- To assess the pharmacokinetic properties and postantibiotic effect of ceftibuten.
- To correlate in vitro and pharmacokinetic data for establishing dosing recommendations.
Main Methods:
- In vitro susceptibility testing against Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, and Enterobacteriaceae.
- Pharmacokinetic studies involving oral administration of ceftibuten in humans.
- Determination of postantibiotic effect (PAE) in vitro.
Main Results:
- Ceftibuten exhibited broad in vitro activity against Streptococcus pneumoniae, beta-lactamase-negative and -positive Haemophilus influenzae, and Moraxella catarrhalis.
- High activity was observed against Enterobacteriaceae, including strains with TEM-1 and extended-spectrum beta-lactamases.
- Ceftibuten demonstrated a postantibiotic effect comparable to other beta-lactams against key pathogens.
- Achieved blood levels after once-daily dosing supported prolonged therapeutic inhibition.
Conclusions:
- Ceftibuten is a promising oral cephalosporin with significant activity against important respiratory and Gram-negative pathogens.
- The pharmacokinetic data support once-daily dosing, providing sustained therapeutic concentrations.
- Correlation of in vitro and pharmacokinetic data allows for the development of rational dosing strategies for ceftibuten.
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