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Metabolomic analysis of blood spots in a Chinese cohort with autism spectrum disorders: a pilot study
Hui Wang1, Li Ding1, Zheng-Huan Mao1
1Department of Rehabilitation, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China.
Insights
This study analyzed blood metabolites in children with autism spectrum disorder (ASD) and typically developing children. Key differences in amino acid metabolism were observed, suggesting potential biomarkers for ASD.
Area of Science:
- Biochemistry
- Neuroscience
- Genetics
Background:
- Autism spectrum disorder (ASD) is a prevalent neurodevelopmental disorder with a significant genetic influence.
- Early diagnosis and understanding molecular mechanisms are crucial for ASD intervention.
- Plasma molecular biomarkers offer potential insights into ASD pathogenesis and early detection.
Purpose of the Study:
- To characterize and compare the metabolomic profiles of children with ASD and typically developing (TD) controls.
- To identify potential plasma metabolites associated with ASD.
- To explore metabolic pathway imbalances in children with ASD.
Main Methods:
- Metabolomic profiling of blood spot samples from 43 children with ASD and 43 TD children.
- Statistical analysis to identify differences in metabolite concentrations between groups.
- Metabolic pathway analysis to investigate functional alterations in metabolic networks.
Main Results:
- Significant differences in metabolomic profiles were observed between children with ASD and TD controls.
- Associations were identified between ASD and specific metabolites including carnosine, histidine, glutamic acid, and glutamine.
- Imbalances in amino acid metabolism pathways, particularly involving Glu/Gln and Car/His, were suggested in ASD children.
Conclusions:
- Metabolomic profiling reveals distinct biochemical signatures in children with ASD.
- Identified metabolites and pathway alterations may contribute to understanding ASD molecular mechanisms.
- These findings hold potential for the development of novel biomarkers for ASD diagnosis.
Abstract:
Autism spectrum disorder (ASD) is a neurodevelopmental disorder with a strong genetic component that is becoming increasingly prevalent. The identification of plasma molecular biomarkers may provide potential insights into ASD and aid in early diagnosis. In this study, we characterized the metabolomic profiles of ASD children using blood spot samples collected at the Children's Hospital of Zhejiang University School of Medicine from children with ASD (n = 43) and typically developing (TD) children (n = 43). Our results highlight differences between children with ASD and TD controls. We identified possibly associations between ASD and a variety of metabolites, including carnosine (Car), glutaric acid, histidine (His), succinic acid, tryptophan, glutamine (Gln), asparagine, guanidinoacetic acid, sarcosine, kynurenine, glutamic acid (Glu) and cysteine (Cys). Metabolic pathway analysis demonstrated a possible imbalance in the amino acid metabolism of Glu/Gln, Car/His in ASD children. These findings may provide new insights into the molecular mechanisms that influence ASD risk and have possibility for the discovery of biomarkers.
