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Association between carotid atheroma and cerebral cortex structure at age 73 years

OBJECTIVE: To examine the relationship between carotid atherosclerosis and cerebral cortical thickness and investigate whether cortical thickness mediates the association between carotid atheroma and relative cognitive decline. METHODS: We assessed 554 community‐dwelling subjects (male/female: 296/2...

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Autores principales: Alhusaini, Saud, Karama, Sherif, Nguyen, Tuong‐Vi, Thiel, Alexander, Bernhardt, Boris C., Cox, Simon R., Corley, Janie, Taylor, Adele, Evans, Alan C., Star, John M., Bastin, Mark E., Wardlaw, Joanna M., Deary, Ian J., Ducharme, Simon
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6328248/
https://www.ncbi.nlm.nih.gov/pubmed/30179274
http://dx.doi.org/10.1002/ana.25324
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author Alhusaini, Saud
Karama, Sherif
Nguyen, Tuong‐Vi
Thiel, Alexander
Bernhardt, Boris C.
Cox, Simon R.
Corley, Janie
Taylor, Adele
Evans, Alan C.
Star, John M.
Bastin, Mark E.
Wardlaw, Joanna M.
Deary, Ian J.
Ducharme, Simon
author_facet Alhusaini, Saud
Karama, Sherif
Nguyen, Tuong‐Vi
Thiel, Alexander
Bernhardt, Boris C.
Cox, Simon R.
Corley, Janie
Taylor, Adele
Evans, Alan C.
Star, John M.
Bastin, Mark E.
Wardlaw, Joanna M.
Deary, Ian J.
Ducharme, Simon
author_sort Alhusaini, Saud
collection PubMed
description OBJECTIVE: To examine the relationship between carotid atherosclerosis and cerebral cortical thickness and investigate whether cortical thickness mediates the association between carotid atheroma and relative cognitive decline. METHODS: We assessed 554 community‐dwelling subjects (male/female: 296/258) from the Lothian Birth Cohort 1936 who underwent brain magnetic resonance imaging and carotid Doppler ultrasound studies at age 73 years. The relationship between carotid atherosclerosis markers (internal carotid artery stenosis, intima–media thickness, velocity, pulsatility, and resistivity indexes) and vertex‐wide cerebral cortical thickness was examined cross‐sectionally, controlling for gender, extensive vascular risk factors (VRFs), and intelligence quotient at age 11 (IQ‐11). We also determined the association between carotid stenosis and a composite measure of fluid intelligence at age 73 years. A mediation model was applied to examine whether cortical thickness mediated the relationship between carotid stenosis and cognitive function. RESULTS: A widespread negative association was identified between carotid stenosis (median = 15%) and cerebral cortical thickness at age 73 years, independent of the side of carotid stenosis, other carotid measures, VRFs, and IQ‐11. This association increased in an almost dose–response relationship from mild to severe degrees of carotid stenosis, across the anterior and posterior circulation territories. A negative association was also noted between carotid stenosis and fluid intelligence (standardized beta coefficient = −0.151, p = 0.001), which appeared partly (approximately 22%) mediated by carotid stenosis‐related thinning of the cerebral cortex. INTERPRETATION: The findings suggest that carotid stenosis represents a marker of processes that accelerate aging of the cerebral cortex and cognition that is in part independent of measurable VRFs. Cortical thinning within the anterior and posterior circulation territories partially mediated the relationship between carotid atheroma and fluid intelligence. Ann Neurol 2018;84:576–587
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spelling pubmed-63282482019-01-16 Association between carotid atheroma and cerebral cortex structure at age 73 years Alhusaini, Saud Karama, Sherif Nguyen, Tuong‐Vi Thiel, Alexander Bernhardt, Boris C. Cox, Simon R. Corley, Janie Taylor, Adele Evans, Alan C. Star, John M. Bastin, Mark E. Wardlaw, Joanna M. Deary, Ian J. Ducharme, Simon Ann Neurol Research Articles OBJECTIVE: To examine the relationship between carotid atherosclerosis and cerebral cortical thickness and investigate whether cortical thickness mediates the association between carotid atheroma and relative cognitive decline. METHODS: We assessed 554 community‐dwelling subjects (male/female: 296/258) from the Lothian Birth Cohort 1936 who underwent brain magnetic resonance imaging and carotid Doppler ultrasound studies at age 73 years. The relationship between carotid atherosclerosis markers (internal carotid artery stenosis, intima–media thickness, velocity, pulsatility, and resistivity indexes) and vertex‐wide cerebral cortical thickness was examined cross‐sectionally, controlling for gender, extensive vascular risk factors (VRFs), and intelligence quotient at age 11 (IQ‐11). We also determined the association between carotid stenosis and a composite measure of fluid intelligence at age 73 years. A mediation model was applied to examine whether cortical thickness mediated the relationship between carotid stenosis and cognitive function. RESULTS: A widespread negative association was identified between carotid stenosis (median = 15%) and cerebral cortical thickness at age 73 years, independent of the side of carotid stenosis, other carotid measures, VRFs, and IQ‐11. This association increased in an almost dose–response relationship from mild to severe degrees of carotid stenosis, across the anterior and posterior circulation territories. A negative association was also noted between carotid stenosis and fluid intelligence (standardized beta coefficient = −0.151, p = 0.001), which appeared partly (approximately 22%) mediated by carotid stenosis‐related thinning of the cerebral cortex. INTERPRETATION: The findings suggest that carotid stenosis represents a marker of processes that accelerate aging of the cerebral cortex and cognition that is in part independent of measurable VRFs. Cortical thinning within the anterior and posterior circulation territories partially mediated the relationship between carotid atheroma and fluid intelligence. Ann Neurol 2018;84:576–587 John Wiley and Sons Inc. 2018-10-05 2018-10 /pmc/articles/PMC6328248/ /pubmed/30179274 http://dx.doi.org/10.1002/ana.25324 Text en © 2018 The Authors. Annals of Neurology published by Wiley Periodicals, Inc. on behalf of American Neurological Association. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Alhusaini, Saud
Karama, Sherif
Nguyen, Tuong‐Vi
Thiel, Alexander
Bernhardt, Boris C.
Cox, Simon R.
Corley, Janie
Taylor, Adele
Evans, Alan C.
Star, John M.
Bastin, Mark E.
Wardlaw, Joanna M.
Deary, Ian J.
Ducharme, Simon
Association between carotid atheroma and cerebral cortex structure at age 73 years
title Association between carotid atheroma and cerebral cortex structure at age 73 years
title_full Association between carotid atheroma and cerebral cortex structure at age 73 years
title_fullStr Association between carotid atheroma and cerebral cortex structure at age 73 years
title_full_unstemmed Association between carotid atheroma and cerebral cortex structure at age 73 years
title_short Association between carotid atheroma and cerebral cortex structure at age 73 years
title_sort association between carotid atheroma and cerebral cortex structure at age 73 years
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6328248/
https://www.ncbi.nlm.nih.gov/pubmed/30179274
http://dx.doi.org/10.1002/ana.25324
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