Cited by 74Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchLipoproteins and Cardiovascular Health

Apolipoprotein E Genotype Affects Size of ApoE Complexes in Cerebrospinal Fluid

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Heinsinger, Nicolette Mary, Gachechiladze, Mariam Alexandra, Rebeck, G. William·2016·Journal of Neuropathology & Experimental Neurology

Abstract

Apolipoprotein E (apoE) is associated with lipoproteins in the cerebrospinal fluid (CSF). APOE4 increases and APOE2 decreases the risk for Alzheimer disease (AD) compared to the risk associated with APOE3 Because apoE4 is less efficient at cholesterol efflux than apoE2 or apoE3 in vitro, we hypothesized that APOE genotype may affect apoE particle size in vivo and that these size differences may be related to AD risk. We used nondenaturing gel electrophoresis to test for differences in the size of apoE complexes in human CSF samples of various APOE genotypes and created profiles of each sample to compare the patterns of apoE distribution. For middle-aged adults with no dementia, APOE 2.3 individuals had significantly larger apoE complexes than APOE 3.3 subjects, who had significantly larger apoE complexes than APOE 3.4 and APOE 4.4 individuals. Similarly, in an independent cohort of older adults, CSF apoE complexes of APOE4-positive individuals were smaller than those of the APOE4-negative individuals. Compared to individuals with no dementia, those with the mildest stages of dementia had similar sized CSF apoE complexes. These results identify a novel phenotypic difference in the size of CSF apoE complexes in middle age that correlate with the risk of AD later in life.

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Crossref · 10.1093/jnen/nlw067

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Authors
Heinsinger, N. M., Gachechiladze, M. A., & Rebeck, G. W.
Affiliations
Georgetown University (US)
Venue
Journal of Neuropathology & Experimental Neurology
Published
2016-08-11
Volume
75
Issue
10
Pages
918-924
ISSN
  • 0022-3069 (ISSN-L)
  • 1554-6578
OpenAlex
W2517337661
Cited by
74
References
48
Citations by year
2026: 7 · 2025: 8 · 2024: 12 · 2023: 7 · 2022: 9 · 2021: 6 · 2020: 12 · 2019: 8 · 2018: 1 · 2017: 3 · 2016: 1
FWCI
3.48
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuropathology & Experimental Neurology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Funders
  • Washington University in St. Louis
  • Georgetown University
  • National Institutes of Health
  • National Institute on Aging (P01AG030128, P50AG005681)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Surgery › Lipoproteins and Cardiovascular Health
Keywords
apolipoprotein E, APOE genotype, cerebrospinal fluid, particle size, Alzheimer's disease risk, APOE ε4, APOE2, APOE3, cholesterol efflux, dementia, lipoproteins

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