Apolipoprotein E ε4 allele impairs cortical activity in healthy aging and Alzheimer's disease.

Autor: Pedroso RV; Department of Gerontology, Federal University of São Carlos (UFSCar), Rod. Washington Luis, Km 235, Monjolinho, São Carlos, SP 13565-905, Brazil. Electronic address: re.pedroso@hotmail.com., Fraga FJ; Engineering, Modelling and Applied Social Sciences Center (CECS), Federal University of ABC (UFABC), Santo André, SP, Brazil., Nascimento CMC; Department of Gerontology, Federal University of São Carlos (UFSCar), Rod. Washington Luis, Km 235, Monjolinho, São Carlos, SP 13565-905, Brazil., Pott-Junior H; Deparment of Medicine, Federal University of São Carlos (UFSCar), Rod. Washington Luis, Km 235, Monjolinho, São Carlos, SP 13565-905, Brazil., Cominetti MR; Department of Gerontology, Federal University of São Carlos (UFSCar), Rod. Washington Luis, Km 235, Monjolinho, São Carlos, SP 13565-905, Brazil.
Jazyk: angličtina
Zdroj: Behavioural brain research [Behav Brain Res] 2022 Feb 26; Vol. 420, pp. 113700. Date of Electronic Publication: 2021 Dec 03.
DOI: 10.1016/j.bbr.2021.113700
Abstrakt: Aim: To investigate the influence of apolipoprotein E (APOE) genotype on cortical activity, using the event-related potential P300 in healthy older adults and individuals with Alzheimer's disease (AD).
Methods: A cohort of 37 healthy older adults and 48 with AD participated in this study and completed an auditory oddball task using electroencephalographic equipment with 21 channels (10-20 system). APOE genotyping was obtained by real-time PCR.
Results: AD presented increased P300 latency and lower P300 amplitude, compared to healthy older adults. AD APOE ε4 carriers presented increased P300 latency in F3 (420.7 ± 65.8 ms), F4 (412.0 ± 49.0 ms), C4 (413.0 ± 41.1 ms) and P3 (420.4 ± 55.7 ms) compared to non-carriers (F3 = 382.5 ± 56.8 ms, p < 0.01; F4 = 372.2 ± 56.7 ms, p < 0.01; C4 = 374.2 ± 51.7 ms, p < 0.01; P3 = 384.4 ± 44.4 ms, p < 0.01). Healthy older adults APOE ε4 carriers presented lower Fz amplitude (2.6 ± 1.5 μV) compared to non-carriers (4.9 ± 2.9 μV; p = 0.02). Linear regression analysis showed that being a carrier of APOE ε4 allele remained significantly associated with P300 latency even after adjusting for sex, age, and cognitive grouping. APOE ε4 allele increases P300 latency (95% CI 0.11-0.98; p = 0.02).
Conclusion: APOE ε4 allele negatively impacts cortical activity in both healthy older adults and AD individuals.
(Copyright © 2021 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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