Unknown

Dataset Information

0

CSF Apo-E levels associate with cognitive decline and MRI changes.


ABSTRACT: Apolipoprotein E (APOE) ?4 allele is the most important genetic risk factor for Alzheimer's disease (AD) and it is thought to do so by modulating levels of its product, apolipoprotein E (Apo-E), and regulating amyloid-? (A?) clearance. However, information on clinical and biomarker correlates of Apo-E proteins is scarce. We examined the relationship of cerebrospinal fluid (CSF) and plasma Apo-E protein levels, and APOE genotype to cognition and AD biomarker changes in 311 AD neuroimaging initiative subjects with CSF Apo-E measurements and 565 subjects with plasma Apo-E measurements. At baseline, higher CSF Apo-E levels were associated with higher total and phosphorylated CSF tau levels. CSF Apo-E levels were associated with longitudinal cognitive decline, MCI conversion to dementia, and gray matter atrophy rate in total tau/A?1-42 ratio and APOE genotype-adjusted analyses. In analyses stratified by APOE genotype, our results were only significant in the group without the ?4 allele. Baseline CSF Apo-E levels did not predict longitudinal CSF A? or tau changes. Plasma Apo-E levels show a mild correlation with CSF Apo-E levels, but were not associated with longitudinal cognitive and MRI changes. Based on our analyses, we speculate that increased CSF Apo-E2 or -E3 levels might represent a protective response to injury in AD and may have neuroprotective effects by decreasing neuronal damage independent of tau and amyloid deposition in addition to its effects on amyloid clearance.

SUBMITTER: Toledo JB 

PROVIDER: S-EPMC3988233 | biostudies-literature | 2014 May

REPOSITORIES: biostudies-literature

altmetric image

Publications

CSF Apo-E levels associate with cognitive decline and MRI changes.

Toledo Jon B JB   Da Xiao X   Weiner Michael W MW   Wolk David A DA   Xie Sharon X SX   Arnold Steven E SE   Davatzikos Christos C   Shaw Leslie M LM   Trojanowski John Q JQ  

Acta neuropathologica 20140103 5


Apolipoprotein E (APOE) ε4 allele is the most important genetic risk factor for Alzheimer's disease (AD) and it is thought to do so by modulating levels of its product, apolipoprotein E (Apo-E), and regulating amyloid-β (Aβ) clearance. However, information on clinical and biomarker correlates of Apo-E proteins is scarce. We examined the relationship of cerebrospinal fluid (CSF) and plasma Apo-E protein levels, and APOE genotype to cognition and AD biomarker changes in 311 AD neuroimaging initiat  ...[more]

Similar Datasets

| S-EPMC3466670 | biostudies-literature
| S-EPMC10292933 | biostudies-literature
| S-EPMC9306106 | biostudies-literature
| S-EPMC6699421 | biostudies-literature
| S-EPMC9639639 | biostudies-literature
| S-EPMC6444289 | biostudies-literature
| S-EPMC2942062 | biostudies-literature
| S-EPMC4603566 | biostudies-literature
| S-EPMC9270636 | biostudies-literature
| S-EPMC4240204 | biostudies-literature