Neurobiological Mechanisms of Autism Spectrum Disorder and Epilepsy, Insights from Animal Models

Neuroscience
Teresa Sierra-ArreguiOlga Peñagarikano

Abstract

Autism Spectrum Disorder (ASD) and epilepsy are two neurodevelopmental disorders that have a high comorbidity rate, suggesting that a common neurodevelopmental mechanism exists. However, to date there is no conclusive way to predict whether a child will develop either syndrome or both and to what degree associated phenotypes will be affected. Failure to consistently identify predictive patterns of ASD and/or epilepsy diagnosis stems from the fact that they are etiologically heterogeneous conditions and research into their neuropathological mechanisms becomes challenging. Whole genome/exome sequencing has advanced our understanding of the genetic causes of ASD and epilepsy to an extent that currently about half of all ASD as well as epilepsy cases are known to have a genetic basis. In fact, a picture is emerging of both conditions as a collection of distinct genetically defined disorders, although the role of environmental factors has also been established. A plethora of animal models, most of them based on identified human genetic mutations and a few on known environmental causes, have been developed. Animal models provide a major experimental avenue for studying the underlying cellular and molecular mechanisms of human disorde...Continue Reading

Citations

Apr 17, 2021·Journal of Medical Ethics·Nicole Shu Ling Yeo-Teh, Bor Luen Tang

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