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Use of a Piglet Model for the Study of Anesthetic-induced Developmental Neurotoxicity AIDN: A Translational Neuroscience Approach
Published on: June 11, 2017
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Delayed growth, motor function and learning in preterm pigs during early postnatal life
Anders D Andersen1, Per T Sangild2, Sara L Munch1
1Comparative Pediatrics and Nutrition, Department of Veterinary Clinical and Animal Science, Frederiksberg C, Denmark;
Summary
Preterm birth in pigs caused lasting neurodevelopmental delays and altered organ growth. While physiological deficits normalized, motor and behavioral impairments persisted, highlighting the pig as a model for preterm infant research.
Area of Science:
- Comparative physiology
- Developmental biology
- Animal models of human disease
Background:
- Preterm birth disrupts fetal growth, leading to postnatal deficits.
- Some preterm-induced physiological issues resolve, while others persist into childhood.
Purpose of the Study:
- To investigate the impact of preterm birth on organ growth, physiological function, and neurodevelopment in a piglet model.
- To assess the persistence of these deficits over the early postnatal period.
Main Methods:
- Cesarean-delivered preterm (90% gestation) and term (100% gestation) piglets were compared.
- Organ weights, blood parameters, and behavioral assessments were conducted on postnatal days 0, 5, and 26.
- Parenteral nutrition was supplemented with enteral milk during the first 5 days.
Main Results:
- Preterm pigs exhibited reduced body weight gain and altered relative organ weights (increased brain/kidney, decreased liver/spleen) up to day 26.
- Neonatal physiological parameters (pH, Po2, glucose, lactate, hematocrit, cortisol) were reduced in preterm pigs, with most normalizing by day 26, except for serotonin and IGF-1.
- Preterm pigs showed persistent delays in arousal, physical activity, coordination, exploration, and learning.
Conclusions:
- The preterm pig model demonstrates that while many physiological deficits resolve by 4 weeks, neurodevelopmental impairments can be long-lasting.
- This model is valuable for studying interventions to support postnatal maturation and neurodevelopment in preterm infants.
