Abstract
Altered brain development during embryogenesis and early postnatal life has been hypothesized to be responsible for the abnormal behaviors of people with autism. The specific genetic background that alters vulnerability to some environmental insults has been suggested in the etiology of autism; however, the specific pathomechanisms have not been identified. Recently, we showed that sera from children with autism alter the maturation of human neuronal progenitor cells (NPCs) in culture. Results suggest that pre-programmed neurogenesis, i.e., neuronal proliferation, migration, differentiation, growth, and circuit organization, can be affected differently by factors present in autistic sera. In this report, we tested the effect of autistic sera on the vulnerability of NPCs to oxidative stress—a recognized risk factor of autism. We found that mild oxidative stress reduced proliferation of differentiating NPCs but not immature NPCs. This decrease of proliferation was less prominent in cultures treated with sera from children with autism than from age-matched controls. These results suggest that altered response of NPCs to oxidative stress may play a role in the etiology of autism.
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Acknowledgment
This study was supported by funds provided by the New York State Office of Mental Retardation and Developmental Disabilities (NYS OMRDD).
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Mazur-Kolecka, B., Cohen, I.L., Jenkins, E.C. et al. Sera from Children with Autism Alter Proliferation of Human Neuronal Progenitor Cells Exposed to Oxidation. Neurotox Res 16, 87–95 (2009). https://doi.org/10.1007/s12640-009-9052-y
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DOI: https://doi.org/10.1007/s12640-009-9052-y