Yoo Hyun Um, Sheng-Min Wang, Dong Woo Kang, Sunghwan Kim, Chang Uk Lee, Donghyeon Kim, Yeong Sim Choe, Regina E Y Kim, Soyoung Lee, Min-Kyung Lee, Hyun Kook Lim
BACKGROUND: Recent interest has surged in the locus coeruleus (LC) for its early involvement in Alzheimer's disease (AD), notably concerning the apolipoprotein ɛ4 allele (APOE4). OBJECTIVE: This study aimed to discern LC functional connectivity (FC) variations in preclinical AD subjects, dissecting the roles of APOE4 carrier status and amyloid-β (Aβ) deposition. METHODS: A cohort of 112 cognitively intact individuals, all Aβ-positive, split into 70 APOE4 noncarriers and 42 carriers, underwent functional MRI scans, neuropsychological assessments, and APOE genotyping...
April 26, 2024: Journal of Alzheimer's Disease: JAD