Journal
JOURNAL OF AFFECTIVE DISORDERS
Volume 235, Issue -, Pages 229-235Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jad.2018.04.061
Keywords
Cognitive vulnerability to depression; Major depressive disorder; Resting-state; Regional homogeneity; Functional connectivity
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Funding
- Beijing Key Laboratory of Learning and Cognition
- MOE (Ministry of Education in China) Project of Humanities and Social Sciences [16YJA190008]
- National Natural Science Foundation of China [31771223, 31571143, 31500867]
- Beijing Municipal Commission of Education [TJSH20161002801]
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Background: Cognitive vulnerability to depression (CVD) is a high risk for depressive disorder. Recent studies focus on individuals with CVD to determine the neural basis of major depressive disorder (MDD) neuropathology. However, whether CVD showed specific or similar brain functional activity and connectivity patterns, compared to MDD, remain largely unknown. Methods: Here, using resting-state functional magnetic resonance imaging in subjects with CVD, healthy controls (HC) and MDD, regional homogeneity (ReHo) and resting-state functional connectivity (R-FC) analyses were conducted to assess local synchronization and changes in functional connectivity patterns. Results: Significant ReHo differences were found in right posterior lobe of cerebellum (PLC), left lingual gyrus (LG) and precuneus. Compared to HC, CVD subjects showed increased ReHo in the PLC, which was similar to the difference found between MDD and HC. Compared to MDD patients, CVD subjects showed decreased ReHo in PLC, LG, and precuneus. R-FC analyses found increased functional connections between LG and left inferior parietal lobule, posterior cingulate cortex, and dorsolateral prefrontal cortex in CVD compared to both HC and MDD. Moreover, Regional mean ReHo values were positively correlated with Center for Epidemiologic Studies Depression Scale scores. Conclusion: These analyses revealed that PLC and functional connections between LG and left inferior parietal lobule, posterior cingulate cortex, and dorsolateral prefrontal cortex may be a potential marker for CVD.
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