PMID- 28255464 OWN - NLM STAT- MEDLINE DCOM- 20170829 LR - 20181113 IS - 1687-5443 (Electronic) IS - 2090-5904 (Print) IS - 1687-5443 (Linking) VI - 2017 DP - 2017 TI - Impairments in Brain Perfusion, Metabolites, Functional Connectivity, and Cognition in Severe Asymptomatic Carotid Stenosis Patients: An Integrated MRI Study. PG - 8738714 LID - 10.1155/2017/8738714 [doi] LID - 8738714 AB - Carotid artery stenosis without transient ischemic attack (TIA) or stroke is considered as "asymptomatic." However, recent studies have demonstrated that these asymptomatic carotid artery stenosis (aCAS) patients had cognitive impairment in tests of executive function, psychomotor speed, and memory, indicating that "asymptomatic" carotid stenosis may not be truly asymptomatic. In this study, when 19 aCAS patients compared with 24 healthy controls, aCAS patients showed significantly poorer performance on global cognition, memory, and executive function. By utilizing an integrated MRI including pulsed arterial spin labeling (pASL) MRI, Proton MR Spectroscopy (MRS), and resting-state functional MRI (R-fMRI), we also found that aCAS patients suffered decreased cerebral blood flow (CBF) mainly in the Left Frontal Gyrus and had decreased NAA/Cr ratio in the left hippocampus and decreased connectivity to the posterior cingulate cortex (PCC) in the anterior part of default mode network (DMN). FAU - Wang, Tao AU - Wang T AD - Department of Neurology, Zhongnan Hospital of Wuhan University, Wuhan, China. FAU - Xiao, Feng AU - Xiao F AUID- ORCID: 0000-0003-2929-1844 AD - Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan, China. FAU - Wu, Guangyao AU - Wu G AUID- ORCID: 0000-0002-0456-3682 AD - Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan, China. FAU - Fang, Jian AU - Fang J AUID- ORCID: 0000-0003-1225-1432 AD - Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan, China. FAU - Sun, Zhenmeng AU - Sun Z AUID- ORCID: 0000-0002-8876-494X AD - Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan, China. FAU - Feng, Hongliang AU - Feng H AUID- ORCID: 0000-0003-3291-7780 AD - Department of Neurology, Zhongnan Hospital of Wuhan University, Wuhan, China. FAU - Zhang, Junjian AU - Zhang J AUID- ORCID: 0000-0002-4557-5137 AD - Department of Neurology, Zhongnan Hospital of Wuhan University, Wuhan, China. FAU - Xu, Haibo AU - Xu H AUID- ORCID: 0000-0002-8451-8979 AD - Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170201 PL - United States TA - Neural Plast JT - Neural plasticity JID - 100883417 SB - IM MH - Aged MH - Brain/blood supply/*metabolism/*physiopathology MH - Brain Mapping MH - Carotid Stenosis/complications/*metabolism/*physiopathology MH - Cognitive Dysfunction/complications/*metabolism/*physiopathology MH - Female MH - Gyrus Cinguli/physiopathology MH - Humans MH - Magnetic Resonance Imaging MH - Magnetic Resonance Spectroscopy MH - Male MH - Middle Aged MH - Neural Pathways/physiopathology MH - Neuropsychological Tests PMC - PMC5309400 COIS- There is no conflict of interests. EDAT- 2017/03/04 06:00 MHDA- 2017/08/30 06:00 PMCR- 2017/02/01 CRDT- 2017/03/04 06:00 PHST- 2016/09/23 00:00 [received] PHST- 2016/11/15 00:00 [revised] PHST- 2016/12/07 00:00 [accepted] PHST- 2017/03/04 06:00 [entrez] PHST- 2017/03/04 06:00 [pubmed] PHST- 2017/08/30 06:00 [medline] PHST- 2017/02/01 00:00 [pmc-release] AID - 10.1155/2017/8738714 [doi] PST - ppublish SO - Neural Plast. 2017;2017:8738714. doi: 10.1155/2017/8738714. Epub 2017 Feb 1.