Cited by 122Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchParkinson's Disease Mechanisms and Treatments

The substantia nigra and ventral tegmental area in Alzheimer’s disease and Down’s syndrome

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Gibb, W R, Mountjoy, C Q, Mann, D M, Lees, A J·1989·Journal of Neurology, Neurosurgery & Psychiatry

Abstract

Degenerative changes in the substantia nigra and ventral tegmental area were investigated in 104 cases of Alzheimer's disease and 13 cases of Down's syndrome. Frequencies of tangles in three groups of patients with Alzheimer's disease were 86%, 44% and 46% (54% overall) respectively. About half of those with tangles, but no Lewy bodies, had excess nigral cell loss, and 16% had moderate or severe neuronal fallout, but none had a Parkinsonian syndrome. Cases with nigral tangles were younger, tended to have more hippocampal and cortical tangles and plaques, and lower activities of cortical choline acetyltransferase. In most cases of Alzheimer's disease degeneration in nigral and tegmental areas was greater than controls, and tangles were evenly distributed. All the cases of Down's syndrome had tangles in the nigra and eight showed mild cell loss. Mild degenerative changes accompanied by tangles in the substantia nigra and ventral tegmental area are common in Alzheimer's disease, but severe cell loss is rare. When a Parkinsonian syndrome occurs in Alzheimer's disease it is likely to be due to Lewy body pathology.

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Authors
Gibb, W. R., Mountjoy, C. Q., Mann, D. M., & Lees, A. J.
Venue
Journal of Neurology, Neurosurgery & Psychiatry
Publisher
BMJ
Published
1989-02-01
Volume
52
Issue
2
Pages
193-200
ISSN
0022-3050 (ISSN-L)
OpenAlex
W2015429211
Cited by
122
References
43
Citations by year
2026: 3 · 2025: 10 · 2024: 4 · 2023: 14 · 2022: 7 · 2021: 10 · 2020: 4 · 2019: 2 · 2018: 7 · 2017: 2 · 2016: 1 · 2015: 2 · 2014: 2 · 2012: 1
FWCI
4.65
Type
journal article
Language
en
Open access
Locations
  • Journal of Neurology Neurosurgery & Psychiatry (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • HighWire Press Open Archive (submittedVersion)
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 › Neurology › Parkinson's Disease Mechanisms and Treatments
Keywords
substantia nigra, ventral tegmental area, Alzheimer's disease, Down syndrome, neurofibrillary tangles, Lewy bodies, parkinsonism, choline acetyltransferase
MeSH terms
Adult, Aged, Aged, 80 and over, Alzheimer Disease, Cell Count, Inclusion Bodies, Cerebral Cortex, Down Syndrome, Female, Hippocampus, Humans, Male, Melanins, Middle Aged, Nerve Degeneration, Neurofibrils, Neurons, Substantia Nigra, Tegmentum Mesencephali

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