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Updated: Aug 18, 2026

Cefoperazone-treated Mouse Model of Clinically-relevant Clostridium difficile Strain R20291
Published on: December 10, 2016
[Effects of cefotaxime on the intestinal bacterial ecosystem in children (author's transl)]
Insights
This study assessed cefotaxime
Area of Science:
- Microbiology
- Pediatric Pharmacology
- Antibiotic Resistance
Background:
- Intestinal microbiota plays a crucial role in maintaining gut health.
- Antibiotics can significantly disrupt the delicate balance of gut flora.
- Understanding the impact of new antibiotics like cefotaxime on pediatric gut microbiota is essential.
Purpose of the Study:
- To evaluate the effects of cefotaxime on the intestinal bacterial flora in pediatric patients.
- To compare the impact of cefotaxime with a control group not receiving antibiotics.
- To assess the potential for cefotaxime to cause dysbiosis or select for resistant organisms.
Main Methods:
- A differential quantitative method was used to analyze aerobic and anaerobic fecal flora.
- The study involved 10 pediatric patients receiving cefotaxime (alone or with gentamicin) and 41 controls.
- Fecal samples were analyzed before and during antibiotic treatment.
Main Results:
- Cefotaxime significantly impacted Escherichia coli (E. coli), causing disappearance or considerable reduction in most cases.
- A slight increase in Streptococcus D was observed, but without excessive overall flora multiplication.
- No significant alterations were noted in other aerobic or anaerobic bacilli, and no resistant organisms were selected.
Conclusions:
- Cefotaxime appears to have a limited impact on the overall intestinal bacterial flora in children.
- The antibiotic did not lead to the selection of resistant pathogens, suggesting preservation of the gut barrier effect.
- Cefotaxime demonstrates a favorable safety profile regarding gut microbiota disruption in pediatric use.
Abstract:
Cefotaxime activity was studied in pediatric practice on the intestinal bacteria flora of 10 children, by means of a differential quantitative method for aerobic and anaerobic faecal flora and was compared to that of 41 controls not receiving any antibiotics. Cefotaxime was given alone in 7 children, and in combination with gentamicin in 3. An effect on the intestinal bacterial flora was noted on E. coli, which disappeared in 4 cases and diminished considerably in 5. A slight increase in Streptococcus D was observed without excessive multiplication of the flora. The study showed no significant alteration for the other aerobic or anaerobic bacilli. There was no selection of resistant organisms. Cefotaxime is a new cephalosporin which does not seem to produce an increase in many resistant pathogens due to a break-down of the barrier effect observed on the bacterial flora of the gut in children.
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