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Related Experiment Videos

Development of gut colonisation in pre-term neonates.

J L Blakey, L Lubitz, G L Barnes

    Journal of Medical Microbiology
    |November 1, 1982
    PubMed
    Summary

    Pre-term infant gut microflora differs significantly from full-term infants, with delayed colonization and altered bacterial composition. This unique microbial development pattern in premature neonates requires careful consideration during clinical assessments.

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    Area of Science:

    • Neonatal microbiology
    • Gastrointestinal microbiome research
    • Infant health and development

    Background:

    • The gut microbiome plays a crucial role in infant health.
    • Premature infants have unique physiological characteristics that may influence microbial colonization.
    • Understanding the early-life microbiome is essential for neonatal care.

    Purpose of the Study:

    • To investigate the development of microflora in the throat, stomach, and faeces of low birth weight, pre-term infants during their first three weeks of life.
    • To compare the gut microbial colonization patterns in pre-term infants with those of healthy full-term infants.
    • To assess the impact of parenteral feeding and antibiotics on the developing microflora.

    Main Methods:

    • Monitoring of microflora in throat, stomach, and faeces of 28 pre-term, low birth weight infants.

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  • Analysis of bacterial colonization patterns during the first 3 weeks of life.
  • Comparison of flora with healthy breast-fed and artificially fed full-term infants.

    • Main Results:

    • Delayed colonization of throat (87%) and stomach (60%) beyond 4 days in pre-term infants.
    • Stomach flora was sparse and resembled faecal flora; faecal flora established faster.
    • Initial dominance of Bacteroides spp. shifted towards Escherichia coli and gram-negative bacilli; gram-positive bacteria colonization was slow.
    • Parenteral feeding and antibiotics were associated with delayed and restricted microbial colonization.
    • No systemic spread of bacteria via the bloodstream was detected.

    Conclusions:

    • The enteric tract colonization pattern in pre-term infants differs significantly from healthy full-term infants.
    • Delayed and altered microbial development in pre-term neonates necessitates careful interpretation of bacteriological test results.
    • The findings highlight the vulnerability of the pre-term infant microbiome and its potential impact on health outcomes.