Metabolic Regulation of Pre- and Postnatal Growth

Area of Science:

• Metabolomics
• Nutritional Science
• Developmental Biology

Background:

• Infant growth is crucial for long-term health and disease risk.
• Nutrition significantly influences infant growth alongside genetic factors.
• Understanding these mechanisms can inform early life health strategies.

Purpose of the Study:

• To explore the mechanisms linking nutrition and infant growth using metabolomic profiling.
• To investigate the association between cord blood metabolites and infant growth parameters.
• To examine the impact of infant amino acid profiles on growth factors and insulin response.

Main Methods:

• Targeted metabolomic profiling of small molecules in plasma using LC-MS/MS.
• Analysis of data from the German LISA birth cohort and the European CHOP Study.
• Path model analysis to assess relationships between plasma amino acids, growth factors, and infant growth.

Main Results:

• Cord blood lysophosphatidylcholines and fatty acids correlated with birth weight in the LISA study.
• High protein intake in infants increased indispensable amino acids (AA), particularly branched-chain AA (BCAA), exceeding breakdown capacity.
• Amino acids showed a stronger insulin response than IGF-I, with varied effects among individual AAs.

Conclusions:

• Targeted metabolomic profiling provides insights into nutrient-driven infant growth mechanisms.
• Nutrient supply during pregnancy and infancy can be optimized to promote healthy child growth.
• Early nutritional interventions hold potential for improving long-term health outcomes.