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White and Gray Matter Abnormalities in Young Adult Females with Dependent Personality Disorder: A Diffusion-Tensor Imaging and Voxel-Based Morphometry Study

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Abstract

We applied diffusion-tensor imaging (DTI) including measurements of fractional anisotropy (FA), a parameter of neuronal fiber integrity, mean diffusivity (MD), a parameter of brain tissue integrity, as well as voxel-based morphometry (VBM), a measure of gray and white matter volume, to provide a basis to improve our understanding of the neurobiological basis of dependent personality disorder (DPD). DTI was performed on young girls with DPD (N = 17) and young female healthy controls (N = 17). Tract-based spatial statistics (TBSS) were used to examine microstructural characteristics. Gray matter volume differences between the two groups were investigated using voxel-based morphometry (VBM). The Pearson correlation analysis was utilized to examine the relationship between distinct brain areas of white matter and gray matter and the Dy score on the MMPI. The DPD had significantly higher fractional anisotropy (FA) values than the HC group in the right retrolenticular part of the internal capsule, right external capsule, the corpus callosum, right posterior thalamic radiation (include optic radiation), right cerebral peduncle (p < 0.05), which was strongly positively correlated with the Dy score of MMPI. The volume of gray matter in the right postcentral gyrus and left cuneus in DPD was significantly increased (p < 0.05), which was strongly positively correlated with the Dy score of MMPI (r1,2= 0.467,0.353; p1,2 = 0.005,0.04). Our results provide new insights into the changes in the brain structure in DPD, which suggests that alterations in the brain structure might implicate the pathophysiology of DPD. Possible visual and somatosensory association with motor nerve circuits in DPD.

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Data Availability

The datasets generated and/or analyzed during the current study are not publicly available but are available from the corresponding author at reasonable request.

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Acknowledgements

We thank Professor Sun for revising the previous manuscript.

Funding

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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Contributions

YS contributed to the study’s conception and design. Material preparation was performed by LM. QZ was responsible for data collection. JL and YL went through the data analysis. The first draft of the manuscript was written by ZC and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Yueji Sun.

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Conflict of Interest

The authors have no relevant financial or non-financial interests to disclose. The authors declare no competing interests.

Ethics Approval

Ethics approval was received for this study from the institutional ethical committee of Dalian Medical University. The study`s methods were carried out in compliance with the Declaration of the Helsinki-World Health Organization`s standard ethical guidelines.

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Informed consent was obtained from all individual participants included in the study.

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Handling Editor: Armida Mucci.

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Cui, Z., Meng, L., Zhang, Q. et al. White and Gray Matter Abnormalities in Young Adult Females with Dependent Personality Disorder: A Diffusion-Tensor Imaging and Voxel-Based Morphometry Study. Brain Topogr 37, 102–115 (2024). https://doi.org/10.1007/s10548-023-01013-3

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  • DOI: https://doi.org/10.1007/s10548-023-01013-3

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