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Related Experiment Videos

Gastrointestinal permeability changes in the preterm neonate

R C Beach, I S Menzies, G S Clayden

    Archives of Disease in Childhood
    |February 1, 1982
    PubMed
    Summary

    Neonatal bowel permeability to sugars changes after birth. Healthy preterm infants show increased permeability early in life, which matures over time, unlike infants experiencing trauma.

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    Area of Science:

    • Neonatal physiology
    • Gastrointestinal research
    • Pediatric medicine

    Background:

    • The neonatal gut barrier's permeability is crucial for infant health.
    • Understanding changes in gut permeability is vital for preterm infant care.

    Purpose of the Study:

    • To assess neonatal bowel permeability to large and small molecules.
    • To investigate the impact of gestational age and health status on gut permeability.

    Main Methods:

    • Utilized the lactulose/L-rhamnose urinary excretion ratio as an index of intestinal permeability.
    • Administered milk containing both sugars via continuous infusion to infants.
    • Monitored sugar excretion ratios at different time points post-birth.

    Main Results:

    • Healthy infants (31-36 weeks gestational age) exhibited heightened permeability in the first week, with ratios decreasing by days 9-16.
    • Infants experiencing asphyxia or sepsis showed less pronounced permeability changes.
    • Preterm infants (26-29 weeks gestational age) had mature permeability at birth, followed by a transient increase around 3-4 weeks.

    Conclusions:

    • Enhanced permeability to larger molecules appears to be a temporary, specific condition in the neonatal gut.
    • Further research is needed to establish the immunological implications of this phenomenon in human infants.

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