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Establishment of a Rat Model for Intrauterine Adhesions via Dual Injury: Curettage and Infection
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[Intrauterine infection affects early growth and neurobehavioral development in neonatal rats]

Ying Shen1, Yi Sun1, Weizhong Gu2

  • 1Departments of Neonatology, the Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China.

Zhejiang Da Xue Xue Bao. Yi Xue Ban = Journal of Zhejiang University. Medical Sciences
|May 19, 2019
PubMed

Insights

Intrauterine infection in pregnant rats caused by Escherichia coli (E. coli) led to cerebral white matter damage and impaired early growth and neurobehavioral development in neonatal rats.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Infectious Diseases

Background:

  • Intrauterine infection is a significant concern during pregnancy.
  • Understanding its impact on neonatal development is crucial for early intervention.

Purpose of the Study:

  • To investigate the effects of intrauterine infection on neonatal rat growth and neurobehavioral development.
  • To assess cerebral white matter integrity following intrauterine infection.

Main Methods:

  • Established an intrauterine infection model in pregnant rats using Escherichia coli (E. coli).
  • Assessed cerebral white matter damage using Hematoxylin-Eosin staining.
  • Evaluated protein expression (GFAP, CNPase, NF) via immunohistochemistry and Western blot.
  • Monitored birth weight, growth indices, and performed neurobehavioral tests.

Main Results:

  • Intrauterine E. coli infection increased white blood cell counts in the uterus and placenta.
  • Cerebral white matter damage and increased GFAP expression were observed in infected neonates.
  • Decreased levels of CNPase and NF were noted in the brains of infected pups.
  • Infected neonates exhibited lower birth weight, slower weight gain, and delayed developmental milestones.

Conclusions:

  • Intrauterine infection induces cerebral white matter damage in neonatal rats.
  • Early growth and neurobehavioral development are significantly retarded following intrauterine infection.
  • This study highlights the detrimental effects of intrauterine infection on offspring development.

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