Plasma somatostatin concentration in the preterm neonate

Area of Science:

• Neonatal physiology
• Endocrinology
• Gastroenterology

Background:

• Plasma somatostatin concentrations are not well-characterized in preterm neonates.
• Understanding somatostatin regulation is crucial for neonatal development and feeding practices.

Purpose of the Study:

• To measure plasma somatostatin concentrations in preterm neonates.
• To investigate the effect of breast milk feeding on somatostatin levels.
• To correlate neonatal somatostatin levels with adult levels and tissue distribution.

Main Methods:

• Radioimmunoassay was used to measure plasma somatostatin levels.
• A longitudinal study design tracked concentrations over the first 8 days of life.
• Comparison was made between preterm neonates and healthy adult controls.

Main Results:

• Preterm neonates exhibited significantly higher plasma somatostatin concentrations (21-25 pmol/l) compared to adults (11 pmol/l).
• Gavage feeding with breast milk in neonates led to a significant decrease in somatostatin levels within 60 minutes.
• Elevated neonatal levels correlate with high somatostatin density in the neonatal pancreas and digestive tract.

Conclusions:

• Neonates have higher plasma somatostatin levels than adults, likely due to higher tissue concentrations.
• Somatostatin in neonates is responsive to feeding, suggesting a regulatory role of nutrition.
• These findings provide insights into neonatal endocrine and digestive system regulation.