PMID- 28413981 OWN - NLM STAT- MEDLINE DCOM- 20180604 LR - 20180923 IS - 1875-5828 (Electronic) IS - 1567-2050 (Linking) VI - 14 IP - 11 DP - 2017 TI - Default Mode Network Connectivity and Related White Matter Disruption in Type 2 Diabetes Mellitus Patients Concurrent with Amnestic Mild Cognitive Impairment. PG - 1238-1246 LID - 10.2174/1567205014666170417113441 [doi] AB - BACKGROUND: As a risk factor for Alzheimer's disease (AD), type 2 diabetes mellitus (T2DM) itself causes cognitive impairment and has higher prevalence of mild cognitive impairment (MCI). OBJECTIVE: The aim of this study was to explore the cognition especially the episodic memory difference, the DMN functional connectivity and DMN-related white matter integrity in patients with both T2DM and amnestic MCI (T2DM-MCI) as compared to patients with T2DM only. METHODS: Focusing especially on T2DM population, we investigated the default mode network (DMN) through resting-state functional magnetic resonance imaging among 22 elderly T2DM-MCI patients and 24 elderly T2DM patients. Including primarily the bilateral cingulum, hippocampus and uncinate fasciculus, these DMN white matter fibers were also closely associated with episodic memory and the integrity of them was also investigated using diffusion tensor imaging in 19 elderly T2DM-MCI patients and 23 elderly T2DM patients. RESULTS: Compared with the patients with T2DM, the T2DM-MCI patients performed worse in several areas of cognition besides episodic memory, and showed stronger DMN functional connectivity in the left precuneus and weaker functional connectivity in the left calcarine, as well as decreased integrity of the left cingulate bundle and bilateral uncinate fasciculus. Furthermore, a correlation analysis indicated that higher left calcarine connectivity was associated with better episodic memory performance among the overall group. CONCLUSION: Our results demonstrated that T2DM patients with comorbid amnestic MCI had abnormal functional connectivity patterns and decreased white matter integrity, which could potentially serve as AD or AD risk biomarkers for early detection of those elderly individuals with T2DM. CI - Copyright(c) Bentham Science Publishers; For any queries, please email at epub@benthamscience.org. FAU - Qi, Di AU - Qi D AD - State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875. China. FAU - Wang, Ailin AU - Wang A AD - State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875. China. FAU - Chen, Yaojing AU - Chen Y AD - State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875. China. FAU - Chen, Kewei AU - Chen K AD - Banner Alzheimer's Institute, Phoenix, AZ 85006. United States. FAU - Zhang, Sisi AU - Zhang S AD - State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875. China. FAU - Zhang, Junying AU - Zhang J AD - State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875. China. FAU - Li, Xin AU - Li X AD - State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875. China. FAU - Ai, Lin AU - Ai L AD - Department of Radiology, Beijing Tiantan Hospital, Beijing Neurosurgery Institute, Capital Medical University, Beijing 100050. China. FAU - Zhang, Zhanjun AU - Zhang Z AD - State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875. China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United Arab Emirates TA - Curr Alzheimer Res JT - Current Alzheimer research JID - 101208441 SB - IM MH - Aged MH - Brain/*diagnostic imaging/pathology/*physiopathology MH - Brain Mapping MH - Cognitive Dysfunction/complications/*diagnostic imaging/pathology/*physiopathology MH - Comorbidity MH - Cross-Sectional Studies MH - Diabetes Mellitus, Type 2/complications/*diagnostic imaging/pathology/*physiopathology MH - Diffusion Tensor Imaging MH - Female MH - Humans MH - Magnetic Resonance Imaging MH - Male MH - Memory, Episodic MH - Middle Aged MH - Neural Pathways/diagnostic imaging/pathology/physiopathology MH - Neuropsychological Tests MH - Rest OTO - NOTNLM OT - Type 2 diabetes mellitus OT - default mode network OT - episodic memory OT - functional connectivity OT - mild cognitive impairment OT - white matter integrity EDAT- 2017/04/18 06:00 MHDA- 2018/06/05 06:00 CRDT- 2017/04/18 06:00 PHST- 2017/01/08 00:00 [received] PHST- 2017/04/01 00:00 [revised] PHST- 2017/04/11 00:00 [accepted] PHST- 2017/04/18 06:00 [pubmed] PHST- 2018/06/05 06:00 [medline] PHST- 2017/04/18 06:00 [entrez] AID - CAR-EPUB-82860 [pii] AID - 10.2174/1567205014666170417113441 [doi] PST - ppublish SO - Curr Alzheimer Res. 2017;14(11):1238-1246. doi: 10.2174/1567205014666170417113441.