Ghrelin and feeding behaviour in preterm infants

Area of Science:

• Pediatrics
• Endocrinology
• Nutritional Science

Background:

• Early life nutrition and environment significantly influence long-term metabolic health.
• Preterm infants require specific nutritional support to optimize growth and neurodevelopment while mitigating future metabolic disease risk.
• Appetite regulation involves complex molecular and neural mechanisms, with peptide hormones like ghrelin playing a crucial role.

Purpose of the Study:

• To explore the role of ghrelin in early life nutrition and its potential impact on feeding behavior and metabolic health.
• To investigate ghrelin levels in newborns and its presence in human breast milk.
• To understand the implications of ghrelin for neuroendocrine development related to appetite and energy homeostasis.

Main Methods:

• Review of existing scientific literature on early life events, nutrition, and metabolic diseases.
• Analysis of studies evaluating cord ghrelin levels in term and preterm newborns, including those with growth restrictions.
• Detection and assessment of ghrelin in human breast milk from term and preterm infants.

Main Results:

• Ghrelin levels are highest in early life and vary with gestational age and growth status, with elevated levels noted in small-for-gestational age and intrauterine growth-restricted newborns.
• Ghrelin has been identified in both term and preterm human breast milk.
• These findings suggest ghrelin's potential involvement in the development of appetite-regulating pathways.

Conclusions:

• Ghrelin is present in breast milk and may influence the development of infant feeding behaviors and energy homeostasis.
• Further research is needed to fully elucidate ghrelin's specific functions in breast milk and its long-term effects on feeding behavior and metabolic programming.