PMID- 26064945 OWN - NLM STAT- MEDLINE DCOM- 20160310 LR - 20220409 IS - 2314-6141 (Electronic) IS - 2314-6133 (Print) VI - 2015 DP - 2015 TI - Insulin Resistance-Associated Interhemispheric Functional Connectivity Alterations in T2DM: A Resting-State fMRI Study. PG - 719076 LID - 10.1155/2015/719076 [doi] LID - 719076 AB - We aim to investigate whether decreased interhemispheric functional connectivity exists in patients with type 2 diabetes mellitus (T2DM) by using resting-state functional magnetic resonance imaging (rs-fMRI). In addition, we sought to determine whether interhemispheric functional connectivity deficits associated with cognition and insulin resistance (IR) among T2DM patients. We compared the interhemispheric resting state functional connectivity of 32 T2DM patients and 30 healthy controls using rs-fMRI. Partial correlation coefficients were used to detect the relationship between rs-fMRI information and cognitive or clinical data. Compared with healthy controls, T2DM patients showed bidirectional alteration of functional connectivity in several brain regions. Functional connectivity values in the middle temporal gyrus (MTG) and in the superior frontal gyrus were inversely correlated with Trail Making Test-B score of patients. Notably, insulin resistance (log homeostasis model assessment-IR) negatively correlated with functional connectivity in the MTG of patients. In conclusion, T2DM patients exhibit abnormal interhemispheric functional connectivity in several default mode network regions, particularly in the MTG, and such alteration is associated with IR. Alterations in interhemispheric functional connectivity might contribute to cognitive dysfunction in T2DM patients. FAU - Xia, Wenqing AU - Xia W AD - Medical School of Southeast University, No. 87 Dingjiaqiao Road, Nanjing 210009, China ; Center for Functional Neuroimaging, University of Pennsylvania, 3710 Hamilton Walk, Philadelphia, PA 19104, USA. FAU - Wang, Shaohua AU - Wang S AD - Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, No. 87 Dingjiaqiao Road, Nanjing 210009, China. FAU - Spaeth, Andrea M AU - Spaeth AM AD - Center for Sleep and Circadian Neurobiology, Perelman School of Medicine, University of Pennsylvania, 3710 Hamilton Walk, Philadelphia, PA 19104, USA. FAU - Rao, Hengyi AU - Rao H AD - Center for Functional Neuroimaging, University of Pennsylvania, 3710 Hamilton Walk, Philadelphia, PA 19104, USA. FAU - Wang, Pin AU - Wang P AD - Medical School of Southeast University, No. 87 Dingjiaqiao Road, Nanjing 210009, China. FAU - Yang, Yue AU - Yang Y AD - Medical School of Southeast University, No. 87 Dingjiaqiao Road, Nanjing 210009, China. FAU - Huang, Rong AU - Huang R AD - Medical School of Southeast University, No. 87 Dingjiaqiao Road, Nanjing 210009, China. FAU - Cai, Rongrong AU - Cai R AD - Medical School of Southeast University, No. 87 Dingjiaqiao Road, Nanjing 210009, China. FAU - Sun, Haixia AU - Sun H AD - Medical School of Southeast University, No. 87 Dingjiaqiao Road, Nanjing 210009, China. LA - eng GR - T32 HL007713/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150430 PL - United States TA - Biomed Res Int JT - BioMed research international JID - 101600173 SB - IM MH - Adult MH - Aged MH - Brain Mapping MH - Cognition Disorders/*diagnostic imaging/etiology/physiopathology MH - Diabetes Mellitus, Type 2/complications/*diagnostic imaging/physiopathology MH - Female MH - Frontal Lobe/diagnostic imaging/physiopathology MH - Humans MH - Insulin Resistance/*physiology MH - *Magnetic Resonance Imaging MH - Male MH - Middle Aged MH - Radiography MH - Temporal Lobe/diagnostic imaging/physiopathology PMC - PMC4430652 EDAT- 2015/06/13 06:00 MHDA- 2016/03/11 06:00 PMCR- 2015/04/30 CRDT- 2015/06/12 06:00 PHST- 2015/02/16 00:00 [received] PHST- 2015/04/16 00:00 [accepted] PHST- 2015/06/12 06:00 [entrez] PHST- 2015/06/13 06:00 [pubmed] PHST- 2016/03/11 06:00 [medline] PHST- 2015/04/30 00:00 [pmc-release] AID - 10.1155/2015/719076 [doi] PST - ppublish SO - Biomed Res Int. 2015;2015:719076. doi: 10.1155/2015/719076. Epub 2015 Apr 30.