Owen A Williams1, Yang An1, Nicole M Armstrong1, Andrea T Shafer1, Jessica Helphrey1, Melissa Kitner-Triolo1, Luigi Ferrucci2, Susan M Resnick3. 1. Laboratory of Behavioral Neuroscience, National Institute on Aging, Baltimore, MD, USA. 2. Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, Baltimore, MD, USA. 3. Laboratory of Behavioral Neuroscience, National Institute on Aging, Baltimore, MD, USA. Electronic address: resnicks@grc.nia.nih.gov.
Abstract
INTRODUCTION: Questions remain about whether apolipoprotein E (APOE)-ε4 effects on cognitive decline are similar in men and women and how APOE-ε4 and age interact to influence decline in different cognitive domains. METHODS: In sex-stratified analyses, baseline age-dependent associations between APOE-ε4 status and longitudinal cognitive trajectories were examined in cognitively normal Caucasian older adults (631 men, 561 women, baseline age range: 50-93, 6733 assessments). RESULTS: In men, older baseline age was associated with greater effects of APOE-ε4 on longitudinal decline in memory and executive function, detectible from baseline age of 64 and 68, respectively. In women, older baseline age was associated with greater APOE-ε4 effects on longitudinal decline in attention, detectible at baseline age of 66. No significant APOE-ε4 effects were found for language, visual-spatial ability, or processing speed. DISCUSSION: Results highlight the importance of considering sex and age when assessing APOE-ε4-associated vulnerability to cognitive decline. Published by Elsevier Inc.
INTRODUCTION: Questions remain about whether apolipoprotein E (APOE)-ε4 effects on cognitive decline are similar in men and women and how APOE-ε4 and age interact to influence decline in different cognitive domains. METHODS: In sex-stratified analyses, baseline age-dependent associations between APOE-ε4 status and longitudinal cognitive trajectories were examined in cognitively normal Caucasian older adults (631 men, 561 women, baseline age range: 50-93, 6733 assessments). RESULTS: In men, older baseline age was associated with greater effects of APOE-ε4 on longitudinal decline in memory and executive function, detectible from baseline age of 64 and 68, respectively. In women, older baseline age was associated with greater APOE-ε4 effects on longitudinal decline in attention, detectible at baseline age of 66. No significant APOE-ε4 effects were found for language, visual-spatial ability, or processing speed. DISCUSSION: Results highlight the importance of considering sex and age when assessing APOE-ε4-associated vulnerability to cognitive decline. Published by Elsevier Inc.
Entities:
Keywords:
Aging; Alzheimer's disease; Apolipoprotein E ε4; Cognitive decline; Sex
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