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- W2935567170 abstract "ABSTRACT Dementia with Lewy bodies (DLB) is the second-leading degenerative dementia after Alzheimer’s disase. Neuropathologically, it is characterized by alpha-synuclein protein deposition with variable degree of concurrent Alzheimer pathology. Neuroinflammation is increasingly recognized as a significant contributor of degeneration. Objective to examine the relationship between microglial activation as measured with [ 11 C]-PK11195 brain PET and MR diffusion tensor imaging (DTI) in DLB. Methods nineteen clinically probable DLB and 20 similarly aged controls underwent structural MRI with T1-weighted and 3T DTI sequences. Eighteen DLB subjects also underwent [ 11 C]-PK11195 PET imaging. Tract-Based Spatial Statistics (TBSS) were performed to compare DTI parameters in DLB relative to controls and identify associations of [ 11 C]-PK11195 binding with white matter integrity. Results TBSS showed widespread changes in all DTI parameters in the DLB group compared to controls (Threshold Free Cluster Enhancement (TFCE) p < 0.05). [ 11 C]-PK11195 binding in parietal cortices also correlated with widespread lower mean and radial diffusivity (TFCE p < 0.05). Conclusion Our study demonstrates that higher PK11195 binding is associated with a relative preservation of white matter, positioning neuroinflammation as a potential early marker in the DLB pathogenic cascade." @default.
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- W2935567170 date "2019-04-09" @default.
- W2935567170 modified "2023-09-23" @default.
- W2935567170 title "Correlation of Microglial Activation with White Matter Changes in Dementia with Lewy Bodies" @default.
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- W2935567170 doi "https://doi.org/10.1101/599241" @default.
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