Cellular Bioenergetic and Metabolic Changes in Patients with Autism Spectrum Disorder

Title:Cellular Bioenergetic and Metabolic Changes in Patients with Autism Spectrum Disorder

Volume: 21 Issue: 11

Author(s): Maria Gevezova, Danail Minchev, Iliana Pacheva, Yordan Sbirkov, Ralitsa Yordanova, Elena Timova, Vasil Kotetarov, Ivan Ivanov and Victoria Sarafian*

Affiliation:

• Department of Medical Biology, Medical University Plovdiv, Plovdiv,Bulgaria

Keywords: Autism, Mitochondrial dysfunction, Mito stress test, Glucose, Glutamine, Fatty acids.

Abstract:

Background: Although Autism Spectrum Disorder (ASD) is considered a heterogeneous neurological disease in childhood, a growing body of evidence associates it with mitochondrial dysfunction explaining the observed comorbidities.

Introduction: The aim of this study is to identify variations in cellular bioenergetics and metabolism dependent on mitochondrial function in ASD patients and healthy controls using Peripheral Blood Mononuclear Cells (PBMCs). We hypothesized that PBMCs may reveal the cellular pathology and provide evidence of bioenergetic and metabolic changes accompanying the disease.

Methods: PBMC from children with ASD and a control group of the same age and gender were isolated. All patients underwent an in-depth clinical evaluation. A well-characterized cohort of Bulgarian children is selected. Bioenergetic and metabolic studies of isolated PBMCs are performed with a Seahorse XFp analyzer.

Results: Our data show that PBMCs from patients with ASD have increased respiratory reserve capacity (by 27.5%), increased maximal respiration (by 67%) and altered adaptive response to oxidative stress induced by DMNQ. In addition, we demonstrate а strong dependence on fatty acids and impaired ability to reprogram cell metabolism. The listed characteristics are not observed in the control group. These results can contribute to a better understanding of the underlying causes of ASD, which is crucial for selecting a successful treatment.

Conclusion: The current study, for the first time, provides a functional analysis of cell bioenergetics and metabolic changes in a group of Bulgarian patients with ASD. It reveals physiological abnormalities that do not allow mitochondria to adapt and meet the increased energetic requirements of the cell. The link between mitochondria and ASD is not yet fully understood, but this may lead to the discovery of new approaches for nutrition and therapy.

Cite this article as:

Gevezova Maria, Minchev Danail, Pacheva Iliana, Sbirkov Yordan, Yordanova Ralitsa , Timova Elena , Kotetarov Vasil , Ivanov Ivan and Sarafian Victoria *, Cellular Bioenergetic and Metabolic Changes in Patients with Autism Spectrum Disorder, Current Topics in Medicinal Chemistry 2021; 21 (11) . https://dx.doi.org/10.2174/1568026621666210521142131