Plasma lipids are associated with white matter microstructural changes and axonal degeneration.

Abstract:

:Dislipidemia is a risk factor for cognitive impairment. We studied the association between interindividual variability of plasma lipids and white matter (WM) microstructure, using diffusion tensor imaging (DTI) in 273 healthy adults. Special focus was placed on 7 regions of interest (ROI) which are structural components of cognitive neurocircuitry. We also investigated the effect of plasma lipids on cerebrospinal fluid (CSF) neurofilament light chain (NfL), an axonal degeneration marker. Low density lipoprotein (LDL) and triglyceride (TG) levels showed a negative association with axial diffusivity (AxD) in multiple regions. High density lipoproteins (HDL) showed a positive correlation. The association was independent of Apolipoprotein E (APOE) genotype, blood pressure or use of statins. LDL moderated the relation between NfL and AxD in the body of the corpus callosum (p = 0.041), right cingulum gyrus (p = 0.041), right fornix/stria terminalis (p = 0.025) and right superior longitudinal fasciculus (p = 0.020) and TG in the right inferior longitudinal fasciculus (p = 0.004) and left fornix/stria terminalis (p = 0.001). We conclude that plasma lipids are associated to WM microstructural changes and axonal degeneration and might represent a risk factor in the transition from healthy aging to disease.

journal_name

Brain Imaging Behav

authors

Iriondo A,García-Sebastian M,Arrospide A,Arriba M,Aurtenetxe S,Barandiaran M,Clerigue M,Ecay-Torres M,Estanga A,Gabilondo A,Izagirre A,Saldias J,Tainta M,Villanua J,Mar J,Goñi FM,Martínez-Lage P

doi

10.1007/s11682-020-00311-9

subject

Has Abstract

pub_date

2020-08-03 00:00:00

eissn

1931-7557

issn

1931-7565

pii

10.1007/s11682-020-00311-9

pub_type

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