Cited by 99Dementia and Cognitive Impairment ResearchParkinson's Disease Mechanisms and TreatmentsAlzheimer's disease research and treatments

Relative preservation of MMSE scores in autopsy-proven dementia with Lewy bodies

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Nelson, P. T., Kryscio, R. J., Jicha, G. A., Abner, E. L., Schmitt, F. A., Xu, L. O., Cooper, G., Smith, C. D. +1 more·2009·Neurology

Abstract

BACKGROUND: Recent studies raised questions about the severity of cognitive impairment associated with dementia with Lewy bodies (DLB). However, there have been few analyses of large, multicenter data registries for clinical-pathologic correlation. METHODS: We evaluated data from the National Alzheimer's Coordinating Center registry (n = 5,813 cases meeting initial inclusion criteria) and the University of Kentucky Alzheimer's Disease Center autopsy series (n = 527) to compare quantitatively the severity of cognitive impairment associated with DLB pathology vs Alzheimer disease (AD) and AD+DLB pathologies. RESULTS: Mini-Mental State Examination (MMSE) scores showed that persons with pure DLB had cognitive impairment of relatively moderate severity (final MMSE score 15.6 +/- 8.7) compared to patients with pure AD and AD+DLB (final MMSE score 10.7 +/- 8.6 and 10.6 +/- 8.6). Persons with pure DLB pathology from both data sets had more years of formal education and were more likely to be male. Differences in final MMSE scores were significant (p < 0.01) between pure DLB and both AD+DLB and pure AD even after correction for education level, gender, and MMSE-death interval. Even in cases with extensive neocortical LBs, the degree of cognitive impairment was most strongly related to the amount of concomitant AD-type neurofibrillary pathology. CONCLUSIONS: Dementia with Lewy bodies can constitute a debilitating disease with associated psychiatric, motoric, and autonomic dysfunction. However, neocortical Lewy bodies are not a substrate for severe global cognitive impairment as assessed by the Mini-Mental State Examination. Instead, neocortical Lewy bodies appear to constitute or reflect an additive disease process, requiring Alzheimer disease or other concomitant brain diseases to induce severe global cognitive deterioration.

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  1. Leverenz JB, Hamilton R, Tsuang DW, et al. Empiric refine- ment of the pathologic assessment of Lewy-related pathology in the dementia patient. Brain Pathol 2008;18:220 -224.

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Authors
Nelson, P. T., Kryscio, R. J., Jicha, G. A., Abner, E. L., Schmitt, F. A., Xu, L. O., Cooper, G., Smith, C. D., & Markesbery, W. R.
Affiliations
  • University of Kentucky HealthCare (US)
  • University of Kentucky (US)
Venue
Neurology
Published
2009-10-06
Volume
73
Issue
14
Pages
1127-1133
ISSN
  • 0028-3878 (ISSN-L)
  • 1526-632X
OpenAlex
W1977197096
Cited by
99
References
45
Citations by year
2026: 1 · 2025: 5 · 2024: 8 · 2023: 2 · 2022: 9 · 2021: 4 · 2020: 5 · 2019: 4 · 2018: 5 · 2017: 9 · 2016: 9 · 2015: 6 · 2014: 6 · 2013: 6 · 2012: 8
FWCI
4.12
Type
journal article
Language
en
Open access
Locations
  • Neurology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Alzheimer's Association
  • National Institutes of Health (AG028 383, AG016976, NS061933)
  • National Institute on Aging (P30AG028383, U01AG016976)
  • National Institute of Neurological Disorders and Stroke (R01NS061933, K08NS050110)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
dementia with Lewy bodies, Alzheimer's disease, cognitive impairment severity, Mini-Mental State Examination, Lewy bodies, neurofibrillary pathology, clinicopathological correlation, autopsy
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Cognition Disorders, Educational Status, Female, United Kingdom, Humans, Male, Psychiatric Status Rating Scales, Psychomotor Performance, Registries, Severity of Illness Index, United States, Sex Distribution, Lewy Body Disease

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