Brain Derived Neurotrophic Factor and Serotonin Levels in Autistic Children: Do They Differ in Obesity?

Ehab R. Abdelraouf; Hend Rashad; Ayman Kilany; Hala M. Zeidan; Mohamed Elhadidy; Adel  Hashish; Neveen Hassan Nashaat; Fateheya M. Metwally

doi:10.3889/oamjms.2021.7223

Authors

Ehab R. Abdelraouf Department of Research on Children with Special Needs, Medical Research Division, National Research Centre, Cairo, Egypt; National Research Centre, Medical Research Centre of Excellence, Cairo, Egypt https://orcid.org/0000-0002-0899-8261
Hend Rashad National Research Centre https://orcid.org/0000-0002-9177-2465
Ayman Kilany Department of Research on Children with Special Needs, Medical Research Division, National Research Centre, Cairo, Egypt; National Research Centre, Medical Research Centre of Excellence, Cairo, Egypt
Hala M. Zeidan Department of Research on Children with Special Needs, Medical Research Division, National Research Centre, Cairo, Egypt
Mohamed Elhadidy Department of Research on Children with Special Needs, Medical Research Division, National Research Centre, Cairo, Egypt https://orcid.org/0000-0001-7830-9145
Adel Hashish Department of Research on Children with Special Needs, Medical Research Division, National Research Centre, Cairo, Egypt https://orcid.org/0000-0001-9549-2973
Neveen Hassan Nashaat Department of Research on Children with Special Needs, Medical Research Division, National Research Centre, Cairo, Egypt; National Research Centre, Medical Research Centre of Excellence, Cairo, Egypt https://orcid.org/0000-0003-1553-9327
Fateheya M. Metwally National Research Centre, Medical Research Centre of Excellence, Cairo, Egypt; Department of Environmental and Occupational Medicine, Environmental Research Division, National Research Centre, Cairo, Egypt

DOI:

https://doi.org/10.3889/oamjms.2021.7223

Keywords:

Autism, Obesity, BDNF, Serotonin, Severity, Cognition

Abstract

BACKGROUND: The risk of obesity among autism spectrum disorder (ASD) children is high which could be related to a disorder in their metabolism. Brain derived neurotrophic factor (BDNF) is involved in metabolic control, language behavior, and intellectual development. Serotonin has a role in satiety and energy expenditure.

AIM: Therefore, the aim of this study was to measure the serum levels of BDNF and serotonin in obese compared to non-obese ASD children. The influence of obesity on ASD severity, intellectual, and language development was also investigated.

METHODS: The study included 60 autistic children (Group I: 30 ASD children with obesity and Group II: 30 ASD children without obesity). The serum BDNF and serotonin levels were estimated by ELISA and by high-performance liquid chromatography.

RESULTS: All participants manifested delayed language development. Almost all of them had intellectual disability. The difference between groups regarding ASD severity, language, and intellectual development was non-significant. However, BDNF level in obese group was less than that in the other group while serotonin was higher in the obese group with significant statistical difference.

CONCLUSION: The difference between the groups regarding the levels of BDNF and serotonin, which are involved in the brain development, could be related to obesity. The influence of obesity on ASD severity, intellectual, and language development of ASD children was not distinctive in the participants. The influence of such markers on ASD severity and cognitive performance needs further investigations.

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