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Analysis of Congenital Heart Defects in Mouse Embryos Using Qualitative and Quantitative Histological Methods
08:28

Analysis of Congenital Heart Defects in Mouse Embryos Using Qualitative and Quantitative Histological Methods

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Congenital heart disease affects cerebral size but not brain growth

Cynthia Ortinau1, Terrie Inder, Jennifer Lambeth

  • 1Department of Pediatrics, St. Louis Children's Hospital, Washington University in St. Louis, St. Louis, MO 63110, USA. ortinau_c@kids.wustl.edu

Pediatric Cardiology
|March 28, 2012
PubMed

Insights

Infants with congenital heart disease (CHD) show persistent brain size alterations at 3 months. However, their brain growth rates are similar to healthy infants, with somatic growth being a key factor.

Area of Science:

  • Pediatric Cardiology
  • Neuroscience
  • Developmental Biology

Background:

  • Congenital heart disease (CHD) is associated with delayed brain maturation and altered brain volumes in infants.
  • Brain metrics offer a straightforward method for assessing infant brain development.

Purpose of the Study:

  • To investigate if brain size alterations in infants with CHD persist at 3 months of age.
  • To compare brain growth rates between infants with CHD and healthy controls.

Main Methods:

  • Serial brain magnetic resonance imaging (MRI) was performed on 57 infants with CHD before surgery and at 3 months of age.
  • Brain metrics were used to analyze 19 tissue and fluid spaces to evaluate brain growth.
  • Somatic growth and white matter lesions were also assessed.

Main Results:

  • Infants with CHD exhibited smaller frontal, parietal, and brainstem measures before surgery.
  • These brain size alterations persisted at 3 months, except in the cerebellum.
  • No significant differences in brain growth rates were observed between CHD and control infants; the cerebellum showed a trend towards greater growth in CHD infants.
  • Somatic growth was the primary determinant of brain growth.

Conclusions:

  • Infants with CHD have persistent brain size differences at 3 months, but their overall brain growth rates are comparable to healthy infants.
  • Somatic growth is a critical factor influencing brain development in infants with CHD.
  • Optimal weight gain is crucial for supporting brain growth in this population.

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