Exploring the Role of Peptides in Enhancing Lactation and Supporting Infant Development: A Comprehensive Review

Abstract

Peptides play a crucial roles in both successful lactation and optimal infant development through various biochemical and physiological mechanisms. Bioactive peptides, derived from maternal milk and dietary sources, enhance milk production by regulating hormonal pathways, particularly prolactin and oxytocin secretion. These peptides also improve mammary gland function ,milk protein synthesis and maternal tissue remodeling. In infant, these compounds modulating key signaling molecules such as epidermal growth factor (EGF) and insulin-like growth factor (IGF). Additionally, casein-derived peptides and whey proteins in breast milk contribute to enhanced milk synthesis and quality. Beyond lactation, peptides significantly influence infant development, particularly in immune system maturation, gut microbiota establishment, and neurodevelopment. Antimicrobial peptides, including lactoferrin-derived peptides, provide protection against pathogens, reducing infection risks in neonates. Immunomodulatory peptides support the development of the infant’s immune system by enhancing cytokine production and regulating inflammatory responses. Furthermore, gut health is promoted through peptides such as glycolmacropeptide (GMP), which fosters beneficial microbiota like Bifidobacterium and Lactobacillus, improving digestion and nutrient absorption. Neurodevelopmental benefits of peptides are evident in their role in cognitive function and brain growth. Peptides such as Brain-Derived Neurotrophic Factor (BDNF) and opioid peptides like β-casomorphins contribute to synaptic plasticity, learning, and memory formation. Additionally, peptides influence metabolic programming, reducing risks of metabolic disorders later in life by regulating glucose and lipid metabolism. Overall, peptides serve as essential bioactive compounds in lactation and infant health, enhancing milk production, immune defense, gut microbiota composition, and neurological development. Understanding these mechanisms offers potential applications in developing peptide-based nutritional supplements and functional foods to support maternal and infant health.

DOI - https://doi.org/10.65525/SVUP.9788198800428.2025.34-40