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Cited by 260

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Parkinsonian signs and substantia nigra neuron density in decendents elders without PD

Ross, G. Webster, Petrovitch, Helen, Abbott, Robert D., Nelson, James, Markesbery, William, Davis, Daron, Hardman, John, Launer, Lenore, Masaki, Kamal, Tanner, Caroline M., White, Lon R.·2004·Annals of Neurology

Abstract

Substantia nigra (SN) neurons were counted on single, transverse caudal midbrain sections from 217 male participants in the Honolulu‐Asia Aging Study, aged 74–97 years at death. Quadrants areas within the SN were determined with a planimeter and neuronal density was expressed as neurons/mm 2 for 10 Parkinson's disease (PD) cases, 29 incidental Lewy body cases, and 178 controls with neither condition. Mean densities in all quadrants were significantly lower in the PD group compared with the other groups (p = 0.006). This relationship was strongest in the ventrolateral quadrant. In a subgroup of 50 controls who were examined with the Unified Parkinson's Disease Rating Scale an average of 2.1 years prior to death, there was an association of stooped posture (p = 0.009), postural instability (p = 0.013), body bradykinesia (p = 0.048), and gait disturbance (p = 0.05) with neuron density in the dorsolateral quadrant; and impaired speech (p = 0.014), abnormal facial expression (p = 0.022), and difficulty rising from a chair (p = 0.032) with neuron density in the dorsomedial quadrant. There was a significant association of increasing number of signs present with decreasing neuron density in both quadrants (p = 0.001 for trend). Low SN neuron density may be the basis for parkinsonian signs in the elderly without PD. Ann Neurol 2004

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Metadata

Authors
Ross, G. W., Petrovitch, H., Abbott, R. D., Nelson, J., Markesbery, W., Davis, D., Hardman, J., Launer, L., Masaki, K., Tanner, C. M., & White, L. R.
Venue
Annals of Neurology
Publisher
Wiley
Published
2004-09-03
Volume
56
Issue
4
Pages
532-539
ISSN
  • 0364-5134 (ISSN-L)
  • 1531-8249
OpenAlex
W1998395846
Cited by
260
References
4
FWCI
4.22
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Parkinsonian signs and substantia nigra neuron density in decendents elders without PD. https://app.cochat.ai/papers/10.1002/ana.20226
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Ross, G. W., Petrovitch, H., Abbott, R. D., Nelson, J., Markesbery, W., Davis, D., Hardman, J., Launer, L., Masaki, K., Tanner, C. M., & White, L. R. (2004). Parkinsonian signs and substantia nigra neuron density in decendents elders without PD. Annals of Neurology. https://doi.org/10.1002/ana.20226

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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