Medial temporal lobe white matter pathway variability is associated with individual differences in episodic memory in cognitively normal older adults

被引:10
作者
Alm, Kylie H. [1 ]
Faria, Andreia, V [2 ]
Moghekar, Abhay [3 ]
Pettigrew, Corinne [3 ]
Soldan, Anja [3 ]
Mori, Susumu [2 ]
Albert, Marilyn [3 ]
Bakker, Arnold [1 ]
机构
[1] Johns Hopkins Univ, Sch Med, Dept Psychiat & Behav Sci, Baltimore, MD 21287 USA
[2] Johns Hopkins Univ, Dept Radiol, Sch Med, Baltimore, MD 21287 USA
[3] Johns Hopkins Univ, Dept Neurol, Sch Med, Baltimore, MD 21287 USA
基金
美国国家卫生研究院;
关键词
Cognitive aging; Biomarker; Diffusion tensor imaging; Cerebrospinal fluid; Episodic memory; CEREBROSPINAL-FLUID BIOMARKERS; ALZHEIMERS-DISEASE; DIAGNOSTIC GUIDELINES; NATIONAL INSTITUTE; FRACTIONAL ANISOTROPY; RETROGRADE-AMNESIA; HIPPOCAMPAL VOLUME; SYMPTOM ONSET; IMPAIRMENT; INTEGRITY;
D O I
10.1016/j.neurobiolaging.2019.11.011
中图分类号
R592 [老年病学]; C [社会科学总论];
学科分类号
03 ; 0303 ; 100203 ;
摘要
Significant evidence demonstrates that aging is associated with variability in cognitive performance, even among individuals who are cognitively normal. In this study, we examined measures from magnetic resonance imaging and cerebrospinal fluid (CSF) to investigate which measures, alone or in combination, were associated with individual differences in episodic memory performance. Using hierarchical linear regressions, we compared the ability of diffusion tensor imaging (DTI) metrics, CSF measures of amyloid and tau, and gray matter volumes to explain variability in memory performance in a cohort of cognitively normal older adults. Measures of DTI microstructure were significantly associated with variance in memory performance, even after accounting for the contribution of the CSF and magnetic resonance imaging gray matter volume measures. Significant associations were found between DTI measures of the hippocampal cingulum and fornix with individual differences in memory. No such relationships were found between memory performance and CSF markers or gray matter volumes. These findings suggest that DTI metrics may be useful in identifying changes associated with aging or age-related diseases. (C) 2019 Elsevier Inc. All rights reserved.
引用
收藏
页码:78 / 88
页数:11
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