[The influence of cefprozil on intestinal bacterial flora]

Area of Science:

• Microbiology
• Pediatric Pharmacology
• Antibiotic Research

Background:

• Intestinal bacterial flora plays a crucial role in pediatric health.
• The impact of new antibiotics on gut microbiota requires thorough investigation.
• Cephalosporins are widely used antibiotics, necessitating safety assessments.

Purpose of the Study:

• To evaluate the effect of Cefprozil (CFPZ) on the intestinal bacterial flora in pediatric patients.
• To assess the safety profile of CFPZ regarding gut microbiota disruption.
• To determine the influence of CFPZ on aerobic and anaerobic bacteria, fungi, and specific Gram-negative bacilli.

Main Methods:

• Oral administration of Cefprozil (CFPZ) granules to pediatric patients (9 months to 6 years 3 months old).
• Collection of fecal samples before, during, and after CFPZ administration for bacterial identification and enumeration.
• Assay of Cefprozil concentrations and beta-lactamase activity in fecal samples.
• Analysis of changes in dominant bacterial groups, including aerobes, anaerobes, glucose nonfermentative Gram-negative bacilli, and fungi.

Main Results:

• Fecal bacterial flora exhibited minor variations during CFPZ administration but no significant alterations in main aerobes and anaerobes.
• Glucose nonfermentative Gram-negative bacilli and fungi did not become dominant in any patient.
• Beta-lactamase activity was consistently detected in fecal samples.
• Cefprozil concentrations remained undetectable in fecal samples throughout the study period.

Conclusions:

• Cefprozil (CFPZ) demonstrates a low potential for disrupting the intestinal bacterial flora in children.
• The study suggests that CFPZ is a safe antibiotic option for pediatric infections concerning gut microbiota.
• Further research may explore long-term effects, but initial findings indicate minimal impact on gut microbial balance.