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Quantitative Polymerase Chain Reaction-based Analyses of Murine Intestinal Microbiota After Oral Antibiotic Treatment
Published on: November 17, 2018
Faecal microbiota in breast-fed infants after antibiotic therapy
1Department of Paediatrics, Ospedale Infantile Regina Margherita, Turin, Italy. francesco.savino@unito.it
Insights
Antibiotic therapy significantly altered infant gut microbiota, reducing total bacteria, Enterobacteriaceae, and enterococci. Exclusively breast-fed infants showed gut microbiota recovery post-therapy.
Area of Science:
- Microbiology
- Pediatrics
- Gastroenterology
Background:
- Antibiotic use in infants can disrupt the developing gut microbiota.
- The gut microbiome plays a crucial role in infant health and immunity.
- Understanding microbiota recovery post-antibiotics is vital for infant health.
Purpose of the Study:
- To assess changes in gut microbiota composition in exclusively breast-fed infants following antibiotic treatment for pneumonia.
- To evaluate the recovery of gut microbiota after ceftriaxone therapy.
Main Methods:
- Stool samples from 26 exclusively breast-fed infants (<5 months) treated with ceftriaxone were analyzed.
- Microbiota analysis included total bacteria, Enterobacteriaceae, enterococci, and lactobacilli counts.
- Samples were collected before, during (day 5), and after (day 15) antibiotic therapy.
Main Results:
- A significant reduction in total bacteria, Enterobacteriaceae, and enterococci was observed after 5 days of ceftriaxone.
- Lactobacilli were undetectable after 5 days of antibiotic treatment.
- Gut microbiota counts returned to baseline levels 15 days after therapy cessation.
Conclusions:
- Five days of ceftriaxone therapy significantly alters infant gut microbiota composition.
- Exclusive breastfeeding appears to support the re-establishment of gut microbiota in early infancy.
Aim:
To evaluate modifications of gut microbiota after antibiotic therapy in breast-fed infants.
Study Design:
Twenty-six exclusively breast-fed infants younger than 5 months hospitalized for pneumonia treated with ceftriaxone (50 mg per kilo per day administered intramuscularly) were recruited. Intestinal microbiota at day 0 - before starting antibiotic administration - at the end of the therapy (5 days after) and after 15 days after the stop was analysed. Stool samples were collected and immediately diluted and cultured on selective media to detect total bacteria, Enterobacteriaceae, enterococci and lactobacilli. Statistical analysis was performed by using Wilcoxon test.
Results:
After 5 days of antibiotic therapy, we observed a significant reduction in total faecal bacterial count (p = 0.003) in Enterobacteriaceae (p = 0.001) and enterococci (p < 0.001), in comparison with day 0. After 5 days of therapy, lactobacilli are no longer detected. Conversely, bacterial count values for all bacteria detected after 15 days from the end of therapy are significantly increased and similar to day 0.
Conclusion:
Our findings showed that gut microbiota was significantly modified after 5 days of antibiotic therapy; exclusively, breast-feeding may be relevant in promoting the re-establishment of gut microbiota composition in early infancy.
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