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White matter characteristics between amygdala and prefrontal cortex underlie depressive tendency in end stage renal disease patients before the dialysis initiation

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Abstract

Depression is one of the common incidental symptoms in end-stage renal disease (ESRD) patients, empirically overlooked. Reproducible results observed that altered interregional white matter (WM) connections between depression-related brain regions (thalamus, amygdala, and prefrontal cortex (PFC)) in the human brain were closely associated with depression. Whether the depressive tendency of ESRD patients is also association with the WM connections is remains unknown. To address this problem, 56 ESRD patients before dialysis initiation and 56 healthy controls (HCs) were scanned with diffusion tensor imaging. According to the diagnostic and statistical manual of mental disorders, ESRD patients were separated into with and without depressive tendency groups. Twenty-five essential metabolites were tested in ESRD. The tractography atlas-based analysis and multiple regression analysis were implemented to gain features which could map the depressive tendency variability across ESRD. For metabolites, the levels of thrombocytes and calcium have significant differences between with and without depressive tendency groups. For WM microstructure, depressive tendency ESRD patients had abnormal WM diffusion properties along the fiber tracts of the amygdala-PFC. Compared with the features which were extracted from the group-difference of WM or metabolites, only WM features combinations (1000 bootstrap samples; 5000 permutation tests) along the fiber tract of the amygdala-PFC was a significant predictor of either with or without depressive tendency. Our findings suggested that the advanced neuroprotection may be planned before dialysis initiation, and the WM characteristics of amygdala-PFC may be a potential neuromarkers for the early diagnosis of depressive tendency in ESRD patients before dialysis initiation.

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Funding

This study was supported by the National Natural Science Foundation of China under Grant Nos. 81901821, 81871330, 81871331, 81571640; Fundamental Research Funds for the Xi’an Children’s Hospital under Grant Nos. 2018A03; National Natural Science Foundation of Shaanxi Province under Grant Nos. 2016JZ031; Shaanxi Science Research and Development Program Project under Grant Nos. 2015SF133; Shaanxi Natural Science Basic Research Project under Grant Nos. 2017ZDJC-13; The Science and Technology Plan of Shaanxi Province of China under Grant Nos.2019SF-209; Funds for the Second Affiliated Hospital of Xi’an Jiaotong University under Grant Nos. YJ(QN)201801.

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Correspondence to Ming Zhang or Jixin Liu.

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None of the authors have a conflict of interest to declare.

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Mu, J., Ma, L., Ding, D. et al. White matter characteristics between amygdala and prefrontal cortex underlie depressive tendency in end stage renal disease patients before the dialysis initiation. Brain Imaging and Behavior 15, 1815–1827 (2021). https://doi.org/10.1007/s11682-020-00376-6

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  • DOI: https://doi.org/10.1007/s11682-020-00376-6

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