Hippocampal volume is related to cognitive decline and fornicial diffusion measures in multiple sclerosis |
| |
Authors: | Katherine A Koenig Ken E Sakaie Mark J Lowe Jian Lin Lael Stone Robert A Bermel Erik B Beall Stephen M Rao Bruce D Trapp Micheal D Phillips |
| |
Institution: | 1. Imaging Institute, Cleveland Clinic, Cleveland, OH, USA;2. Neurological Institute, Cleveland Clinic, Cleveland, OH, USA;3. Schey Center for Cognitive Neuroimaging, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA;4. Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA |
| |
Abstract: | PurposeTo assess for associations between hippocampal atrophy and measures of cognitive function, hippocampal magnetization transfer ratio (MTR), and diffusion measures of the fornix, the largest efferent white matter tract from the hippocampus, in patients with multiple sclerosis (MS) and controls.Materials and MethodsA total of 53 patients with MS and 20 age- and sex-matched healthy controls participated in cognitive testing and scanning including high spatial-resolution diffusion imaging and a T1-MPRAGE scan. Hippocampal volume and fornicial thickness measures were calculated and compared to mean values of fornicial transverse diffusivity, mean diffusivity, longitudinal diffusivity, fractional anisotropy, mean hippocampal MTR, and scores on measures of episodic memory, processing speed, and working memory tasks.ResultsIn patients with MS, hippocampal volume was significantly related to fornicial diffusion measures (P < 7 × 10− 4) and to measures of verbal (P = 0.030) and visual spatial (P = 0.004) episodic memory and a measure of information processing speed (P < 0.037).DiscussionThese results highlight the role of the hippocampus in cognitive dysfunction in patients with MS and suggest that measures of hippocampal atrophy could be used to capture aspects of disease progression. |
| |
Keywords: | Multiple Sclerosis Hippocampus Episodic memory DTI Atrophy Fornix |
本文献已被 ScienceDirect 等数据库收录! |
|