Related Experiment Video
Updated: Nov 30, 2025

Quantitative Polymerase Chain Reaction-based Analyses of Murine Intestinal Microbiota After Oral Antibiotic Treatment
Published on: November 17, 2018
Early life antibiotic exposure and host health: Role of the microbiota-immune interaction
Timothy Wang1, Natsumon Udomkittivorakul1, Madeline Bonfield2
1Division of Neonatology and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45219, USA.
Insights
Neonatal infections risk is high due to developing immune systems. Antibiotic disruption of the gut microbiota may increase neonatal complications and long-term inflammatory diseases.
Area of Science:
- Immunology
- Microbiology
- Neonatal Health
Background:
- Neonates possess unique, developing immune systems, making them susceptible to infections.
- Environmental factors, especially the gut microbiota, significantly influence immune system development.
- Antibiotic use can disrupt the neonatal microbiota, impacting immediate and long-term health.
Purpose of the Study:
- To review mechanistic interactions between the microbiota and the immune system in early life.
- To explore how antibiotic-induced microbiome alterations contribute to neonatal disease.
Main Methods:
- Literature review of existing studies on neonatal microbiota and immunity.
- Analysis of cellular and molecular mechanisms linking microbiota to neonatal outcomes.
- Examination of antibiotic effects on the microbiome and subsequent health implications.
Main Results:
- The gut microbiota plays a critical, modifiable role in neonatal immune development.
- Antibiotic exposure is associated with increased neonatal infection risk and long-term inflammatory conditions.
- Specific mechanisms underlying these associations require further investigation.
Conclusions:
- Understanding microbiota-immune interactions is crucial for neonatal health.
- Targeting the microbiome may offer novel strategies for preventing neonatal infections and diseases.
- Further research into antibiotic-mediated microbiome disruption is warranted.
Abstract:
The neonatal population is at high risk for infections secondary to a unique, developing immune system. While a multitude of factors direct the development of the immune system, the role of environmental exposures on the microbiota may play a critical and potentially modifiable role. Recent evidence suggests that the disruption of the microbiota through the use of antibiotics not only leads to an immediately increased risk for neonatal complications but also long-term health issues related to autoimmune and inflammatory diseases. The exact cellular and molecular mechanisms behind these associations between the microbiota and neonatal outcomes are still under investigation. This review will examine the mechanistic interactions between the microbiota and the immune system, particularly in early life, along with how antibiotic mediated aberrations of the microbiome potentially lead to disease.
Related Concept Videos
Anatomy of the Intestines
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
Microorganisms in Medicine and Therapeutics
Factors Affecting the Risk of Infection
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
Defense Against Bacterial Pathogens
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Defense Mechanism Against Infection
In addition, many body organ systems have unique defenses against infection. The skin is an intact, multilayered surface preventing invasion by microorganisms unless impaired. Mucous membranes lining the mouth, nose, and eyelids are barriers...
Development of Immunocompetence
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...

