Recent advances in understanding pathophysiology of non-nutritional stunting in very preterm infants

Area of Science:

• Neonatology
• Pediatric Growth and Development
• Developmental Pediatrics

Background:

• Very preterm infants (VPIs) frequently exhibit extrauterine growth failure, differing from classic undernutrition.
• Postnatal length growth restriction at term-corrected age is common in VPIs, associated with altered body composition.
• The significance of length growth failure in VPIs is increasingly recognized, with potential links to neurodevelopmental outcomes.

Purpose of the Study:

• To review advances in understanding the pathophysiology of length growth restriction in VPIs.
• To highlight the impact of nonnutritional factors, especially sustained neonatal inflammation, on postnatal length growth.
• To discuss future research directions for optimizing VPI length growth and understanding long-term health risks.

Main Methods:

• Literature review focusing on pathophysiology of length growth restriction in VPIs.
• Analysis of short- and long-term consequences of poor length growth.
• Examination of nonnutritional factors, with emphasis on neonatal inflammation.
• Discussion of inflammatory-endocrine interactions and clinical strategies.

Main Results:

• Length growth restriction in VPIs is a significant predictor of adverse neurodevelopmental and cognitive outcomes.
• Nonnutritional factors, particularly sustained neonatal inflammation, play a key role in length growth restriction.
• Complex inflammatory-endocrine interactions are implicated in early postnatal growth disturbances.

Conclusions:

• Length growth restriction in VPIs has profound short- and long-term consequences, including neurodevelopmental deficits.
• Sustained neonatal inflammation is a critical nonnutritional factor contributing to stunting in VPIs.
• Further research into inflammatory-endocrine pathways is crucial for developing effective clinical strategies to optimize VPI growth and long-term health.