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Abstract Title:

Crosstalk Between the Microbiome and Gestational Immunity in Autism-Related Disorders.

Abstract Source:

DNA Cell Biol. 2019 Feb 28. Epub 2019 Feb 28. PMID: 30817175

Abstract Author(s):

Matt J Paysour, Ashley C Bolte, John R Lukens

Article Affiliation:

Matt J Paysour

Abstract:

The etiologies of most neurodevelopmental disorders, including autism spectrum disorder (ASD), remain incompletely understood. However, recent epidemiological and experimental data suggest that dysregulated maternal immune activation (MIA) can impede normal brain maturation and promote the development of autism-related phenotypes. Indeed, our studies and work by others demonstrate that offspring born to pregnant animals that were exposed to immune activators develop many of the defining behavioral features of ASD, including abnormalities in social preference, communicative impairments, and repetitive/stereotyped behaviors. Although mounting evidence implicates key roles for hyperactive gestational inflammatory responses in neurodevelopmental disorders, the specific immune pathways that provoke autism-related phenotypes remain poorly described. The microbiome is recognized as a key modulator of immune responses, and emerging studies suggest that microbiota composition is a pivotal regulator of central nervous system function and disease. There has been growing speculation that changes in human microflora diversity contribute at some level to the recent rise in autism incidence. This has largely stemmed from reports of dysbiosis and gastrointestinal inflammation in autistic individuals. Given these clinical findings and the well-described role of the microbiome in calibrating the immune system, our group and others have recently become interested in investigating how changes in microbiota landscape influence neurodevelopmental disorder pathogenesis. In this review, we highlight emerging data describing roles for microbiota in the development of autism-related behavioral abnormalities. These recent findings identify the immune system as a link between gut microbiota and the brain in neurodevelopmental disorders, and suggest that targeting the microbiome and maternal immune responses during gestation may offer strategies to limit autism development in at-risk pregnancies.

Study Type : Review

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Sayer Ji
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