PMID- 29563869 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 1663-4365 (Print) IS - 1663-4365 (Electronic) IS - 1663-4365 (Linking) VI - 10 DP - 2018 TI - Altered Brain Functional Hubs and Connectivity in Type 2 Diabetes Mellitus Patients: A Resting-State fMRI Study. PG - 55 LID - 10.3389/fnagi.2018.00055 [doi] LID - 55 AB - Type 2 diabetes mellitus (T2DM) affects a vast population and is closely associated with cognitive impairment. However, the mechanisms of cognitive impairment in T2DM patients have not been unraveled. Research on the basic units (nodes or hubs and edges) of the brain functional network on the basis of neuroimaging may advance our understanding of the network change pattern in T2DM patients. This study investigated the change patterns of brain functional hubs using degree centrality (DC) analysis and the connectivity among these hubs using functional connectivity and Granger causality analysis. Compared to healthy controls, the DC values were higher in the left anterior cingulate gyrus (ACG) and lower in the bilateral lateral occipital cortices (LOC) and right precentral gyrus (PreCG) in T2DM patients. The functional connectivity between the left ACG and the right PreCG was stronger in T2DM patients, whereas the functional connectivity among the right PreCG and bilateral LOC was weaker. A negative causal effect from the left ACG to left LOC and a positive effect from the left ACG to right LOC were observed in T2DM patients, while in healthy controls, the opposite occurred. Additionally, the reserve of normal brain function in T2DM patients was negatively associated with the elevated glycemic parameters. This study demonstrates that there are brain functional hubs and connectivity alterations that may reflect the aberrant information communication in the brain of T2DM patients. The findings may advance our understanding of the mechanisms of T2DM-related cognitive impairment. FAU - Liu, Daihong AU - Liu D AD - Department of Radiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China. FAU - Duan, Shanshan AU - Duan S AD - Department of Endocrinology, The Third Affiliation Hospital of Chongqing Medical University, Chongqing, China. FAU - Zhou, Chaoyang AU - Zhou C AD - Department of Radiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China. FAU - Wei, Ping AU - Wei P AD - Department of Endocrinology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China. FAU - Chen, Lihua AU - Chen L AD - Department of Radiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China. FAU - Yin, Xuntao AU - Yin X AD - Department of Radiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China. FAU - Zhang, Jiuquan AU - Zhang J AD - Department of Radiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China. FAU - Wang, Jian AU - Wang J AD - Department of Radiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China. LA - eng PT - Journal Article DEP - 20180306 PL - Switzerland TA - Front Aging Neurosci JT - Frontiers in aging neuroscience JID - 101525824 PMC - PMC5845755 OTO - NOTNLM OT - Granger causality analysis OT - cognitive impairment OT - degree centrality OT - functional connectivity OT - resting-state functional MRI OT - type 2 diabetes mellitus EDAT- 2018/03/23 06:00 MHDA- 2018/03/23 06:01 PMCR- 2018/01/01 CRDT- 2018/03/23 06:00 PHST- 2017/06/19 00:00 [received] PHST- 2018/02/19 00:00 [accepted] PHST- 2018/03/23 06:00 [entrez] PHST- 2018/03/23 06:00 [pubmed] PHST- 2018/03/23 06:01 [medline] PHST- 2018/01/01 00:00 [pmc-release] AID - 10.3389/fnagi.2018.00055 [doi] PST - epublish SO - Front Aging Neurosci. 2018 Mar 6;10:55. doi: 10.3389/fnagi.2018.00055. eCollection 2018.