Cited by 129Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration Mechanisms

Clinical validity of Braak neuropathological staging in the oldest-old

Gold, G., Bouras, C., Kövari, E., Canuto, A., González Glaría, B., Malky, A., Hof, P. R., Michel, J.-P. +1 more·2000·Acta Neuropathologica

Abstract

Several studies have demonstrated a good correlation between clinical severity and Braak's neuropathological staging in Alzheimer's disease (AD). However, nonagenarians and centenarians display a different pattern of cortical vulnerability to the neurodegenerative process compared to younger elderly, and it is not known whether correlations between clinical severity and neuropathological stages remain valid in this age group. To address this issue we compared Clinical Dementia Rating scale (CDR) scores and Braak stages in 116 patients over 90 years of age with either no cognitive impairment or very mild to severe AD. There is a strong positive correlation between CDR scores and Braak staging (Spearman coefficient = 0.66; P < 0.01). However, neuropathological staging does not distinguish cases with normal cognition (CDR 0) from those with mild cognitive changes (CDR 0.5). Unlike younger cohorts, Braak stages I and II are frequently associated with questionable dementia in this age group. Braak stage III overlaps with all CDR levels and correlates poorly with cognitive function. Braak stages IV or greater are consistently associated with at least mild dementia. Consistent with our previous neuropathological analyses of nonagenarians and centenarians, the present data suggest that the substantial involvement of the hippocampus which characterizes Braak stage IV is a key step in the development of overt clinical signs of dementia in the oldest-old. Moreover, they indicate that Braak staging represents a broad concept of the evolution of neurofibrillary tangles rather than a precise hierarchical model associated with a stepwise deterioration of cognitive abilities near the upper limit of life.

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Crossref · 10.1007/s004010051163

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  • Numerous studies have documented a strong link between neocortical NFTs and cognitive loss.

    “On the other hand, numerous studies have documented a strong link between neocortical NFTs and cognitive loss[26, 46, 48, 97, 123, 160, 169].”

    From Alzheimer's disease: experimental models and reality (2017) · cites this paper as [48]

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Authors
Gold, G., Bouras, C., Kövari, E., Canuto, A., González Glaría, B., Malky, A., Hof, P. R., Michel, J.-P., & Giannakopoulos, P.
Affiliations
  • University Hospital of Geneva (CH)
  • Icahn School of Medicine at Mount Sinai (US)
Venue
Acta Neuropathologica
Published
2000-05-30
Volume
99
Issue
5
Pages
579-582
ISSN
  • 0001-6322 (ISSN-L)
  • 1432-0533
OpenAlex
W2047542833
Cited by
128
References
20
Citations by year
2026: 4 · 2025: 1 · 2024: 4 · 2023: 2 · 2022: 10 · 2021: 5 · 2020: 4 · 2019: 6 · 2018: 3 · 2017: 4 · 2016: 3 · 2015: 4 · 2014: 7 · 2013: 4 · 2012: 3
FWCI
3.26
Type
journal article
Language
en
Open access
closed
Locations
  • Acta Neuropathologica (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
  • National Institutes of Health
  • National Institute on Aging (AG 05138, P50AG005138)
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
Braak staging, Alzheimer's disease, oldest old, centenarians, nonagenarians, Clinical Dementia Rating, neurofibrillary tangles, hippocampal involvement, cognitive impairment, clinical validity
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Brain, Cognition Disorders, Female, Humans, Male, Neurology, Reproducibility of Results, Neurofibrillary Tangles

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