Rostral-middle locus coeruleus integrity and subjective cognitive decline in early old age

Abnormal tau, a hallmark Alzheimer's disease (AD) pathology, may appear in the locus coeruleus (LC) decades before AD symptom onset. Reports of subjective cognitive decline are also often present prior to formal diagnosis. Yet, the relationship between LC structural integrity and subjective cog...

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Veröffentlicht in:Journal of the International Neuropsychological Society 2023-10, Vol.29 (8), p.763-774
Hauptverfasser: Bell, Tyler Reed, Elman, Jeremy A., Beck, Asad, Fennema-Notestine, Christine, Gustavson, Daniel E., Hagler, Donald J., Jack, Amy J., Lyons, Michael J., Puckett, Olivia K., Toomey, Rosemary, Franz, Carol E., Kremen, William S.
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container_issue 8
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container_title Journal of the International Neuropsychological Society
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creator Bell, Tyler Reed
Elman, Jeremy A.
Beck, Asad
Fennema-Notestine, Christine
Gustavson, Daniel E.
Hagler, Donald J.
Jack, Amy J.
Lyons, Michael J.
Puckett, Olivia K.
Toomey, Rosemary
Franz, Carol E.
Kremen, William S.
description Abnormal tau, a hallmark Alzheimer's disease (AD) pathology, may appear in the locus coeruleus (LC) decades before AD symptom onset. Reports of subjective cognitive decline are also often present prior to formal diagnosis. Yet, the relationship between LC structural integrity and subjective cognitive decline has remained unexplored. Here, we aimed to explore these potential associations. We examined 381 community-dwelling men (mean age = 67.58; = 2.62) in the Vietnam Era Twin Study of Aging who underwent LC-sensitive magnetic resonance imaging and completed the Everyday Cognition scale to measure subjective cognitive decline along with their selected informants. Mixed models examined the associations between rostral-middle and caudal LC integrity and subjective cognitive decline after adjusting for depressive symptoms, physical morbidities, and family. Models also adjusted for current objective cognitive performance and objective cognitive decline to explore attenuation. For participant ratings, lower rostral-middle LC contrast to noise ratio (LC ) was associated with significantly greater subjective decline in memory, executive function, and visuospatial abilities. For informant ratings, lower rostral-middle LC was associated with significantly greater subjective decline in memory only. Associations remained after adjusting for current objective cognition and objective cognitive decline in respective domains. Lower rostral-middle LC integrity is associated with greater subjective cognitive decline. Although not explained by objective cognitive performance, such a relationship may explain increased AD risk in people with subjective cognitive decline as the LC is an important neural substrate important for higher order cognitive processing, attention, and arousal and one of the first sites of AD pathology.
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For participant ratings, lower rostral-middle LC contrast to noise ratio (LC ) was associated with significantly greater subjective decline in memory, executive function, and visuospatial abilities. For informant ratings, lower rostral-middle LC was associated with significantly greater subjective decline in memory only. Associations remained after adjusting for current objective cognition and objective cognitive decline in respective domains. Lower rostral-middle LC integrity is associated with greater subjective cognitive decline. 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For participant ratings, lower rostral-middle LC contrast to noise ratio (LC ) was associated with significantly greater subjective decline in memory, executive function, and visuospatial abilities. For informant ratings, lower rostral-middle LC was associated with significantly greater subjective decline in memory only. Associations remained after adjusting for current objective cognition and objective cognitive decline in respective domains. Lower rostral-middle LC integrity is associated with greater subjective cognitive decline. 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subjects Aged
Aging
Alzheimer Disease - diagnosis
Alzheimer's disease
Arousal
Biomarkers
Cognition
Cognitive ability
Cognitive Dysfunction
Dementia
Executive function
Humans
Information processing
Investigations
Locus coeruleus
Locus Coeruleus - diagnostic imaging
Locus Coeruleus - pathology
Magnetic resonance imaging
Male
Medical imaging
Memory
Neurodegenerative diseases
Neuroimaging
Older people
Pathology
Spatial memory
Tau protein
Twins
Visual perception
title Rostral-middle locus coeruleus integrity and subjective cognitive decline in early old age
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