Abstract
Objective: We investigated the mediation effects of subcortical volume change in the relationship of amyloid beta (Aβ) and lacune with cognitive function in patients with mild cognitive impairment (MCI). Methods: We prospectively recruited 101 patients with MCI who were followed up with neuropsychological tests, MRI, or Pittsburgh compound B (PiB) PET for 3 years. The mediation effect of subcortical structure on the association of PiB or lacunes with cognitive function was analyzed using mixed effects models. Results: Volume changes in the amygdala and hippocampus partially mediated the effect of PiB changes on memory function (direct effect = −0.168/−0.175, indirect effect = −0.081/−0.077 for amygdala/hippocampus) and completely mediated the effect of PiB changes on clinical dementia rating scale sum of the box (CDR-SOB) (indirect effect = 0.082/0.116 for amygdala/hippocampus). Volume changes in the thalamus completely mediated the effect of lacune on memory, frontal executive functions, and CDR-SOB (indirect effect = −0.037, −0.056, and 0.047, respectively). Conclusions: Our findings provide a better understanding of the distinct role of subcortical structures in the mediation of the relationships of amyloid or vascular changes with a decline in specific cognitive domains.
Original language | English |
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Article number | 762251 |
Journal | Frontiers in Neurology |
Volume | 12 |
DOIs | |
Publication status | Published - 2021 Dec 7 |
Bibliographical note
Funding Information:grant funded by the Korea government (MSIT) (No.2021-0-02068, Artificial Intelligence Innovation Hub); a 2021 research grant from Pusan National University Yangsan Hospital; Brain Research Program through the National Research Foundation of
Funding Information:
This research was supported by a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health and Welfare and Ministry of Science and ICT, Republic of Korea (Grant Number: HU20C0111); a fund (2021-ER1006-00) by Research of Korea Disease Control and Prevention Agency; the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (NRF-2019R1A5A2027340); Institute of Information & communications Technology Planning & Evaluation (IITP)
Publisher Copyright:
Copyright © 2021 Jung, Shin, Kim, Jang, Moon, Kim, Kim, Cho, Kim, Kim, Jung, Kim, Kim, Na, Vogel, Lee, Seong and Seo.
Keywords
- amyloid
- cognition
- lacune
- mediation
- subcortical structure
ASJC Scopus subject areas
- Neurology
- Clinical Neurology