Longitudinal deterioration of white-matter integrity: heterogeneity in the ageing population | Zendy

Konstantinos Poulakis | Zendy; Robert I. Reid | Zendy; Scott A. Przybelski | Zendy; David S. Knopman | Zendy; Jonathan GraffRadford | Zendy; Val J. Lowe | Zendy; Michelle M. Mielke | Zendy; Mary M. Machulda | Zendy; Clifford R. Jack | Zendy; Ronald C. Petersen | Zendy; Eric Westman | Zendy; Prashanthi Vemuri | Zendy

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Longitudinal deterioration of white-matter integrity: heterogeneity in the ageing population

Author(s) -

Konstantinos Poulakis,

Robert I. Reid,

Scott A. Przybelski,

David S. Knopman,

Jonathan GraffRadford,

Val J. Lowe,

Michelle M. Mielke,

Mary M. Machulda,

Clifford R. Jack,

Ronald C. Petersen,

Eric Westman,

Prashanthi Vemuri

Publication year - 2021

Publication title -

brain communications

Language(s) - English

Resource type - Journals

ISSN - 2632-1297

DOI - 10.1093/braincomms/fcaa238

Subject(s) - white matter , internal capsule , corpus callosum , corona radiata (embryology) , external capsule , cingulum (brain) , population , cognitive decline , hyperintensity , ageing , cognition , psychology , medicine , neuroscience , pathology , magnetic resonance imaging , fractional anisotropy , disease , dementia , environmental health , radiology , ovarian follicle , hormone , cumulus oophorus

Deterioration in white-matter health plays a role in cognitive ageing. Our goal was to discern heterogeneity of white-matter tract vulnerability in ageing using longitudinal imaging data (two to five imaging and cognitive assessments per participant) from a population-based sample of 553 elderly participants (age ≥60 years). We found that different clusters (healthy white matter, fast white-matter decliners and intermediate white-matter group) were heterogeneous in the spatial distribution of white-matter integrity, systemic health and cognitive trajectories. White-matter health of specific tracts (genu of corpus callosum, posterior corona radiata and anterior internal capsule) informed about cluster assignments. Not surprisingly, brain amyloidosis was not significantly different between clusters. Clusters had differential white-matter tract vulnerability to ageing (commissural fibres > association/brainstem fibres). Identification of vulnerable white-matter tracts is a valuable approach to assessing risk for cognitive decline.

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