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- Title
White Matter Microstructural Change Contributes to Worse Cognitive Function in Patients With Type 2 Diabetes.
- Authors
Shudan Gao; Yaojing Chen; Feng Sang; Yiru Yang; Jianan Xia; Xin Li; Junying Zhang; Kewei Chen; Zhanjun Zhang; Gao, Shudan; Chen, Yaojing; Sang, Feng; Yang, Yiru; Xia, Jianan; Li, Xin; Zhang, Junying; Chen, Kewei; Zhang, Zhanjun
- Abstract
Patients with type 2 diabetes mellitus (T2DM) have a considerably high risk of developing dementia, especially for those with mild cognitive impairment (MCI). The investigation of the microstructural change of white matter (WM) between T2DM with amnesic MCI (T2DM-aMCI) and T2DM with normal cognition (T2DM-NC) and their relationships to cognitive performances can help to understand the brain variations in T2DM-related amnesic cognitive impairment. In the current study, 36 T2DM-aMCI patients, 40 T2DM-NC patients, and 40 healthy control (HC) individuals underwent diffusion tensor image and T1-weighted MRI scans and comprehensive cognition assessments. All of these cognitive functions exhibited intergroup ranking differences in patients. The T2DM-NC patients and HC individuals did not reveal any significant differences in WM integrity. The T2DM-aMCI patients showed disrupted integrity in multiple WM tracts compared with HC and T2DM-NC. Specifically, the damaged WM integrity of the right inferior fronto-occipital fasciculus and the right inferior longitudinal fasciculus exhibited significant correlations with episodic memory and attention function impairment in T2DM patients. Furthermore, cognitive impairment-related WM microstructural damage was associated with the degeneration of cortex connected to the affected WM tract. These findings indicate that degeneration exists extensively in WM tracts in T2DM-aMCI, whereas no brain WM damage is evident in T2DM-NC.
- Subjects
TYPE 2 diabetes; COGNITIVE ability; MILD cognitive impairment; DIFFUSION tensor imaging; INTERGROUP communication
- Publication
Diabetes, 2019, Vol 68, Issue 11, p2085
- ISSN
0012-1797
- Publication type
journal article
- DOI
10.2337/db19-0233