Cited by 657Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration Mechanisms

Clinicopathologic Studies in Cognitively Healthy Aging and Alzheimer Disease: Relation of Histologic Markers to Dementia Severity, Age, Sex, and Apolipoprotein E Genotype

Berg, Leonard, McKeel, Daniel W., Miller, J. Philip, Storandt, Martha, Rubin, Eugene H., Morris, John C., Baty, Jack, Coats, Mary +6 more·1998·Archives of Neurology

Abstract

OBJECTIVE: To study differences between subjects with Alzheimer disease (AD) and cognitively intact control subjects, with respect to brain histologic markers of AD, and the relationship of those markers in the AD group to severity of dementia, age at death, sex, and apolipoprotein E genotype. SETTING: Washington University Alzheimer's Disease Research Center, St Louis, Mo. DESIGN AND SUBJECTS: Consecutive neuropathologic series of 224 prospectively studied volunteer research subjects, 186 with dementia of the Alzheimer type (DAT) or "incipient" DAT and confirmed to have AD by postmortem examination and 13 cognitively intact subjects, confirmed to lack postmortem findings of AD. MAIN OUTCOME MEASURES: Brain densities (number per square millimeter) of senile plaques and neurofibrillary tangles, extent of cerebral amyloid angiopathy, cortical Lewy bodies, and apolipoprotein E genotype. RESULTS: Neocortical neurofibrillary tangle densities were substantially correlated with dementia severity, and to a greater degree than was true for senile plaque densities. When infarcts, hemorrhages, and Parkinson disease changes coexisted with AD, neurofibrillary tangle and senile plaque densities were lower. Plaque-predominant AD was found in a greater proportion of subjects with milder than more severe dementia. Entorhinal cortical Lewy bodies were no more frequent in plaque-predominant AD than in the remaining AD cases. Increasing age at death was negatively correlated with dementia severity and densities of senile plaques and neurofibrillary tangles. The apolipoprotein E epsilon4 allele frequency was greater in AD than in control subjects but decreased with increasing age. After controlling for dementia severity, senile plaque densities were only weakly related to epsilon4 allele frequency, and only in hippocampus. However, the degree of cerebral amyloid angiopathy was clearly related to epsilon4 allele frequency. Among subjects diagnosed during life as having DAT or incipient DAT, only 7% were found to have a neuropathologic disorder other than AD causing their dementia. CONCLUSIONS: (1) The order of the strength of relationships between densities of histologic markers and dementia severity in AD is neurofibrillary tangles greater than cored senile plaques greater than total senile plaques. (2) Advanced age at death is associated with somewhat less severe dementia and fewer senile plaques and neurofibrillary tangles. (3) Plaque-predominant AD may represent a developmental stage in AD. (4) Despite a substantial effect of apolipoprotein E epsilon4 as a risk factor for AD, on decreasing the age at AD onset, and increasing the amount of cerebral amyloid angiopathy, its effect on senile plaque densities is variable and complex, being confounded with age, dementia severity, and methodologic differences. (5) Stringent clinical diagnostic criteria for DAT, even in the very mild stage, and senile plaque-based neuropathologic criteria for AD are highly accurate.

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Crossref · 10.1001/archneur.55.3.326

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  • The conjecture that excess temporal neocortex metabolic reduction in E4 carriers is related to increased β-amyloid deposition is supported by the increased predilection in early AD for β-amyloid to accumulate in the neocortex rather than the hippocampal formation and by reductions in METglu observed in transgenic mouse models overproducing amyloid.

    “This conjecture is supported further by the increased predilection in early AD for β-amyloid to accumulate in the neocortex rather than the hippocampal formation (2, 6) and by reductions in METglu observed in transgenic mouse models overproducing amyloid (44).”

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Authors
Berg, L., McKeel, D. W., Miller, J. P., Storandt, M., Rubin, E. H., Morris, J. C., Baty, J., Coats, M., Norton, J., Goate, A. M., Price, J. L., Gearing, M., Mirra, S. S., & Saunders, A. M.
Affiliations
Washington University in St. Louis (US)
Venue
Archives of Neurology
Published
1998-03-01
Volume
55
Issue
3
Pages
326
ISSN
0003-9942 (ISSN-L)
OpenAlex
W1972340735
Cited by
657
References
93
Citations by year
2026: 9 · 2025: 13 · 2024: 10 · 2023: 6 · 2022: 14 · 2021: 12 · 2020: 10 · 2019: 11 · 2018: 8 · 2017: 18 · 2016: 18 · 2015: 26 · 2014: 36 · 2013: 30 · 2012: 33
FWCI
15.75
Type
journal article
Language
en
Open access
closed
Locations
  • Archives of Neurology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute on Aging (AG03991, AG 05681, AG-00634, P50AG005681, P01AG003991)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease, amyloid plaques, neurofibrillary tangles, cerebral amyloid angiopathy, Lewy bodies, APOE ε4, dementia severity, age at death, hippocampus, entorhinal cortex, Parkinson's disease, neuropathology, cognitive aging, postmortem brain examination, apolipoprotein E
MeSH terms
Aged, Aged, 80 and over, Aging, Alzheimer Disease, Apolipoproteins E, Brain, Cognition, Female, Genotype, Humans, Longitudinal Studies, Male, Organ Size, Prospective Studies, Neurofibrillary Tangles, Apolipoprotein E4, Plaque, Amyloid

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