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A Battery of Motor Tests in a Neonatal Mouse Model of Cerebral Palsy
Published on: November 3, 2016
What are the Best Animal Models for Testing Early Intervention in Cerebral Palsy?
Gavin John Clowry1, Reem Basuodan1, Felix Chan1
1Institute of Neuroscience, Newcastle University , Newcastle upon Tyne , UK.
Insights
Evaluating animal models for cerebral palsy (CP) interventions is crucial. This review assesses how well current models replicate CP
Area of Science:
- Neuroscience
- Developmental Pediatrics
- Comparative Medicine
Background:
- Cerebral palsy (CP) requires early intervention for optimal neurodevelopmental outcomes.
- Rigorous safety and efficacy assessments are essential before applying interventions to infants.
- Animal models are vital for preclinical research but their suitability for CP is questioned.
Purpose of the Study:
- To review and evaluate existing animal models for cerebral palsy.
- To assess the extent to which these models capture the multifactorial nature and diverse causal pathways of CP.
- To explore the relevance of animal corticospinal system development and function to human CP.
Main Methods:
- Literature review of animal models used in cerebral palsy research.
- Analysis of how well models replicate specific CP etiologies (e.g., white matter injury, stroke, hypoxia).
- Evaluation of corticospinal system homology between animal models and humans.
- Assessment of studies that tested early interventions in animal models.
Main Results:
- Cerebral palsy is a complex condition with multiple causes, challenging to model comprehensively.
- Existing animal models vary in their ability to replicate specific aspects of CP.
- The corticospinal tract's representation differs significantly across various animal models.
- Few studies have adequately evaluated early interventions within appropriately validated CP models.
Conclusions:
- No single animal model perfectly replicates the complexity of human cerebral palsy.
- Careful selection of models is necessary to accurately reflect specific CP subtypes and causal factors.
- Further development of multifactorial animal models is needed to improve preclinical testing of CP interventions.
Abstract:
Interventions to treat cerebral palsy should be initiated as soon as possible in order to restore the nervous system to the correct developmental trajectory. One drawback to this approach is that interventions have to undergo exceptionally rigorous assessment for both safety and efficacy prior to use in infants. Part of this process should involve research using animals but how good are our animal models? Part of the problem is that cerebral palsy is an umbrella term that covers a number of conditions. There are also many causal pathways to cerebral palsy, such as periventricular white matter injury in premature babies, perinatal infarcts of the middle cerebral artery, or generalized anoxia at the time of birth, indeed multiple causes, including intra-uterine infection or a genetic predisposition to infarction, may need to interact to produce a clinically significant injury. In this review, we consider which animal models best reproduce certain aspects of the condition, and the extent to which the multifactorial nature of cerebral palsy has been modeled. The degree to which the corticospinal system of various animal models human corticospinal system function and development is also explored. Where attempts have already been made to test early intervention in animal models, the outcomes are evaluated in light of the suitability of the model.
