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Related Experiment Video

Updated: Jul 3, 2026

Isolation and Flow Cytometric Characterization of Murine Small Intestinal Lymphocytes

Isolation and Flow Cytometric Characterization of Murine Small Intestinal Lymphocytes

Published on: May 8, 2016

Intestinal immune health.

Michelle E Conroy¹, W Allan Walker

¹Mucosal Immunology and Developmental Gastroenterology Laboratories, Massachusetts General Hospital for Children, Department of Pediatrics, Harvard Medical School, Boston, MA, USA.

Nestle Nutrition Workshop Series. Paediatric Programme

|July 16, 2008

Summary

The newborn gut immune system actively achieves balance despite bacterial challenges at birth. Breast milk and innate mechanisms are crucial for establishing a healthy gut microbiota and immune tolerance in infants.

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Area of Science:

Immunology
Gastroenterology
Neonatal Health

Background:

The fetal intestinal immune system is structurally developed early in gestation.
At birth, neonates face significant bacterial colonization, necessitating active gut homeostasis.
Neonatal inflammatory responses can be exaggerated, requiring robust protective mechanisms.

Purpose of the Study:

To explore the mechanisms of intestinal immune system development and homeostasis in neonates.
To understand the role of breast milk in neonatal gut health.
To investigate molecular strategies for establishing immune tolerance in the infant gut.

Main Methods:

Review of current research on neonatal intestinal immunity.
Analysis of signaling pathways orchestrated by the intestinal epithelium.
Examination of the immunomodulatory components of breast milk.

Main Results:

The intestinal epithelium plays a key role in orchestrating immune responses.
Breast milk possesses significant immunomodulatory properties vital for gut health.
Developmental expression of enzymes, pattern recognition, and cell signaling contribute to homeostasis.

Conclusions:

Neonates possess intrinsic mechanisms to establish a healthy gut microbiota.
Immune tolerance is critical for neonatal health and is influenced by multiple factors.
Understanding these mechanisms is pertinent for addressing infant allergies and inflammatory bowel disease.