Association of descending thoracic aortic plaque with brain atrophy and white matter hyperintensities: The Framingham Heart Study.

Abstract:

BACKGROUND AND AIMS:Aortic atherosclerosis is an aggregate marker of vascular risk factor exposure and has been associated with intracranial atherosclerosis and stroke. We hypothesized that atherosclerosis of the descending aorta (DAo) could be a risk marker for brain aging and injury. METHODS:We evaluated 1527 participants (mean age 59.9 years, 53.5% women) in the Framingham Offspring cohort who underwent both aortic and brain MRI. Participants were free of clinical stroke, dementia, or other neurological illness at the time of axial MRI of the thoracic and abdominal DAo and subsequent brain MRI. We related the prevalence and burden of aortic plaque to total cerebral brain volume (TCBV) and white matter hyperintensity volume (WMHV). An additional analysis compared incidence of stroke or TIA in participants with and without DAo plaques. RESULTS:Presence of thoracic DAo plaque (8%) was associated with decreased TCBV in sex-pooled analysis (-0.77, SE 0.25, p = 0.002, equivalent to 4.5 years of aging) and with increased WMHV only in men (0.26, SE 0.12, p = 0.032, equivalent to 6.5 years aging). We observed similar associations of DAo plaque burden with TCBV and WMHV. There were 43 strokes and 11 TIAs in prospective follow-up (median 7 years). Presence of DAo plaque was not associated with subsequent stroke or TIA. CONCLUSIONS:In this cross-sectional community-based study, we found DAo plaque is associated with accelerated brain aging. These data underscore the potential implications of incidentally identified subclinical aortic atherosclerosis and question whether targeted intervention in these high risk individuals can modulate cognitive decline.

journal_name

Atherosclerosis

journal_title

Atherosclerosis

authors

Aparicio HJ,Petrea RE,Massaro JM,Manning WJ,Oyama-Manabe N,Beiser AS,Kase CS,D'Agostino RB,Wolf PA,Vasan RS,DeCarli C,O'Donnell CJ,Seshadri S

doi

10.1016/j.atherosclerosis.2017.06.919

subject

Has Abstract

pub_date

2017-10-01 00:00:00

pages

305-311

eissn

0021-9150

issn

1879-1484

pii

S0021-9150(17)31168-1

journal_volume

265

pub_type

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