Study identifies specific RNA biomarkers linked to gastrointestinal issues in kids with autism

As a clinician at the University of Missouri Thompson Center for Autism and Neurodevelopmental Disorders, David Beversdorf helps patients with autism spectrum disorder (ASD), many of whom may also be struggling with gastrointestinal or digestive issues, including constipation and diarrhea. These symptoms are experienced by children with ASD at a higher rate than their neurotypical peers, although some individuals might not respond favorably to traditional treatments, such as laxatives.

In a recent study, Beversdorf collaborated with a researcher at Penn State University to identify specific RNA biomarkers linked with gastrointestinal issues in children with autism. The findings could help one day lead to individualized treatments aimed at easing the pain of these individuals.

Saliva samples were collected from nearly 900 children, some of whom had autism and experienced gastrointestinal disturbances, at several academic medical centers across the country. After analyzing the samples, the researchers identified specific RNA biomarkers linked to children who had autism and experienced gastrointestinal symptoms.

We wanted to understand how a child’s body responds to the various bacteria living in the mouth and determine if these interactions contribute to gastrointestinal symptoms. By identifying these specific microRNAs in the saliva of children with autism, these molecules may serve as future targets for developing novel treatments or tracking medication effectiveness in children with autism-related gastrointestinal conditions.”

Steve Hicks, associate professor of pediatrics, Penn State College of Medicine

Hicks collaborated with Beversdorf on the study.

Beversdorf added that RNA have regulatory properties throughout the human body, and the specific RNA identified in the study may have regulatory effects on biological pathways related to metabolism, digestion, depression and addiction.

“It’s one of those ‘chicken or the egg’ cases where we still don’t know if it is the RNA potentially contributing to the gastrointestinal issues, or if the gastrointestinal issues are causing the RNA to be expressed differently, but we have identified a relationship, which will be useful to further explore going forward,” said Beversdorf, who also has appointments in the MU College of Arts and Science and MU School of Medicine. “This research can potentially help contribute to precision medicine one day, where we can follow children with autism and gastrointestinal symptoms over an extended period of time and assess how they might respond to personalized treatments, with the ultimate goal of reducing their symptoms and improving their quality of life.”

Source:

University of Missouri-Columbia

Journal reference:

Beversdorf, D.Q., et al. (2022) Saliva RNA Biomarkers of Gastrointestinal Dysfunction in Children With Autism and Neurodevelopmental Disorders: Potential Implications for Precision Medicine. Frontiers in Psychiatry. doi.org/10.3389/fpsyt.2021.824933.

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