Abstract
Background
Behavioral research has shown that children with autism spectrum disorder (ASD) have a higher empathizing–systemizing difference (D score) than normal children. However, there is no research about the neuroanatomical mechanisms of the empathizing–systemizing difference in children with ASD.
Methods
Participants comprised 41 children with ASD and 39 typically developing (TD) children aged 6‒12 years. Empathizing–systemizing difference was estimated using the D score from the Chinese version of Children’s Empathy Quotient and Systemizing Quotient. We quantified brain morphometry, including global and regional brain volumes and surface-based cortical measures (cortical thickness, surface area, and gyrification) via structural magnetic resonance imaging.
Results
We found that the D score was significantly negatively associated with amygdala gray matter volume [β = −0.16; 95% confidence interval (CI): −0.30, −0.02; P value = 0.030] in children with ASD. There was a significantly negative association between D score and gyrification in the left lateral occipital cortex (LOC) in children with ASD (B = −0.10; SE = 0.03; cluster-wise P value = 0.006) and a significantly positive association between D score and gyrification in the right fusiform in TD children (B = 0.10; SE = 0.03; cluster-wise P value = 0.022). Moderation analyses demonstrated significant interactions between D score and diagnosed group in amygdala gray matter volume (β = 0.19; 95% CI 0.04, 0.35; P value = 0.013) and left LOC gyrification (β = 0.11; 95% CI 0.05, 0.17; P value = 0.001) but not in right fusiform gyrification (β = 0.08; 95% CI −0.02, 0.17; P value = 0.105).
Conclusions
Neuroanatomical variation in amygdala volume and gyrification of LOC could be potential biomarkers for the empathizing–systemizing difference in children with ASD but not in TD children. Large-scale neuroimaging studies are necessary to test the replicability of our findings.
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Data availability
The raw data in the manuscript are only available on request from those who wish to collaborate with us by emailing the corresponding authors. All requests for data will be reviewed by the Ethical Review Committee for Biomedical Research at Sun Yat-Sen University and that data sharing will be conducted in compliance with relevant ethical guidelines and regulations.
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Acknowledgements
The authors gratefully thank the parents and children who have been generous with their time for participating in our research.
Funding
This work was supported by the Key-Area Research and Development Program of Guangdong Province (2019B030335001), the National Natural Science Foundation of China (82273649, 81872639, 82103794), Guangdong Basic and Applied Basic Research Foundation (2021A1515011757, 2022B1515130007).
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PN: conceptualization, methodology, formal analysis, software, validation, resources, investigation, data curation, writing–original draft, writing–review and editing. LLZ: methodology, formal analysis, software, validation, funding acquisition, writing–review and editing. WX: investigation, writing–review and editing. XXY, JYY: software, validation, resources, investigation. TS, SXJ: data curation, investigation. SL, JJ: funding acquisition, writing–review and editing. LXH: conceptualization, supervision, project administration, funding acquisition, writing–review and editing. All authors read and approved the final manuscript.
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The study was approved by the Ethical Review Committee for Biomedical Research Sun Yat-Sen University (2015-No.29). Informed consent to participate in the study has been obtained from participants (or their parent or legal guardian in the case of children under 16).
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Pan, N., Lin, LZ., Wang, X. et al. Brain structure underlying the empathizing–systemizing difference in children with autism spectrum disorder. World J Pediatr 19, 782–792 (2023). https://doi.org/10.1007/s12519-023-00732-8
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DOI: https://doi.org/10.1007/s12519-023-00732-8