Cited by 604Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsAmyotrophic Lateral Sclerosis Research

Apolipoprotein E Type 4 Allele and Cerebral Glucose Metabolism in Relatives at Risk for Familial Alzheimer Disease

Small, Gary W.·1995·JAMA: The Journal of the American Medical Association

Abstract

OBJECTIVE: Cerebral parietal hypometabolism and left-right asymmetry occur early in the course of Alzheimer disease (AD), and the apolipoprotein E type 4 allele (APOE epsilon 4) is a risk factor for familial AD. To determine if APOE epsilon 4 is associated with lowered brain function in nondemented relatives at risk for familial AD, we studied 12 relatives with APOE epsilon 4 and 19 relatives without APOE epsilon 4. We also compared them with seven patients with probable AD. DESIGN: After grouping subjects according to diagnosis and genotype, brain function measures were compared among groups. SETTING: University medical center. PATIENTS: At risk subjects had mild memory complaints, normal cognitive performance, and at least two relatives with AD. Subjects with APOE epsilon 4 did not differ from those without APOE epsilon 4 in mean age at examination (56.4 vs 55.5 years) or in neuropsychological performance (mean Mini-Mental State Examination score, 28.8 vs 29.3). MAIN OUTCOME MEASURES: Cerebral glucose metabolism was measured using positron emission tomography and fludeoxyglucose F 18. RESULTS: Parietal metabolism was significantly lower and left-right parietal asymmetry was significantly higher in at-risk subjects with APOE epsilon 4 compared with those without APOE epsilon 4. Patients with dementia had significantly lower parietal metabolism than did at-risk subjects with APOE epsilon 4. CONCLUSIONS: These results suggest that the inheritance of APOE epsilon 4 is associated with reduced cerebral parietal metabolism and increased asymmetry in non-demented relatives at risk for probable AD. Longitudinal study will determine if glucose metabolic measures provide a means to monitor experimental treatment responses during the early phases of the disorder.

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Crossref · 10.1001/jama.1995.03520360056039

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Authors
Small, G. W.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Small, Gary W.
Venue
JAMA: The Journal of the American Medical Association
Published
1995-03-22
Volume
273
Issue
12
Pages
942
ISSN
  • 0002-9955 (ISSN-L)
  • 0098-7484
OpenAlex
W2159538597
Cited by
604
References
52
Citations by year
2026: 2 · 2025: 6 · 2024: 5 · 2023: 12 · 2022: 7 · 2021: 16 · 2020: 15 · 2019: 9 · 2018: 12 · 2017: 15 · 2016: 16 · 2015: 7 · 2014: 14 · 2013: 15 · 2012: 18
FWCI
27.38
Type
journal article
Language
en
Open access
closed
Locations
  • JAMA (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r29mh046424-05)
  • National Institute on Aging (AG05 128, AG 10123, P50AG005128, P30AG010123, U24AG021886)
  • National Institute of Mental Health (1R29 MH46424)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
Keywords
APOE ε4, familial Alzheimer's disease, brain glucose metabolism, left-right asymmetry, at-risk relatives, early Alzheimer's disease, neuroimaging biomarkers, genetic risk
MeSH terms
Adult, Aged, Aged, 80 and over, Alleles, Alzheimer Disease, Analysis of Variance, Apolipoproteins E, Brain, Deoxyglucose, Family, Female, Fluorine Radioisotopes, Genotype, Glucose, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Models, Theoretical, Neuropsychological Tests, Risk Factors, Tomography, Emission-Computed, Fluorodeoxyglucose F18, Apolipoprotein E4

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