Related Experiment Video
Updated: Aug 13, 2025
14:19
Fetal Echocardiography and Pulsed-wave Doppler Ultrasound in a Rabbit Model of Intrauterine Growth Restriction
Published on: June 29, 2013
28.3K
Fetal Growth Restriction Impairs Lung Function and Neurodevelopment in an Early Preterm Rabbit Model
Ignacio Valenzuela1, Katerina Zapletalova1,2, Marnel Greyling1
1Cluster Woman and Child, Department of Development and Regeneration, Group Biomedical Sciences, KU Leuven Herestraat 49, 3000 Leuven, Belgium.
Biomedicines
|January 21, 2023
Summary
Fetal growth restriction (FGR) in preterm rabbits worsens lung and brain development. Placental underperfusion increases mortality and impairs neurobehavioral and pulmonary function in these vulnerable neonates.
Area of Science:
- Reproductive Biology
- Developmental Neuroscience
- Pulmonary Medicine
Background:
- Fetal growth restriction (FGR) from placental underperfusion causes multi-system issues in near-term rabbits.
- The impact of FGR on preterm neonates requires further investigation.
Purpose of the Study:
- To investigate the pulmonary and neurodevelopmental consequences of FGR in preterm-born rabbits.
- To determine if FGR exacerbates the effects of prematurity on lung and brain development.
Main Methods:
- FGR was induced via placental underperfusion at gestational day 25 in rabbits.
- Preterm rabbits (gestational day 29) underwent neurobehavioral and pulmonary function assessments.
- Brain and lung tissues were analyzed for cell density, apoptosis, morphometry, and histology.
Main Results:
- FGR rabbits exhibited higher perinatal mortality, reduced birth/placental weight, and impaired placental development.
- Pulmonary function was compromised in FGR rabbits, showing increased resistance and elastance.
- Neurobehavioral deficits, reduced brain cell density, and increased apoptosis were observed in FGR neonates.
Conclusions:
- In preterm rabbits, placental underperfusion induces FGR, increasing mortality and impairing early lung and brain development.
- These findings highlight the compounded detrimental effects of FGR and prematurity on neonatal development.
