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Lewy bodies are not increased in progressive supranuclear palsy compared with normal controls
Y Tsuboi1, J E Ahlskog, H Apaydin
1Department of Neurology, Mayo Clinic, Jacksonville, FL 32224, USA.
Objective:
To determine the frequency of Lewy bodies (LB) in progressive supranuclear palsy (PSP).
Background:
LB are characteristic of PD, but are also found in normal controls and in other neurodegenerative diseases, especially AD.
Method:
The authors evaluated the brains of 72 consecutive cases of pathologically confirmed PSP and 98 normal controls, ranging in age from 60 to 100 years, with immunohistochemistry for alpha-synuclein.
Results:
LB and Lewy neurites were found in 13 cases of PSP, with the most numerous LB and Lewy neurites in the basal forebrain and amygdala; most cases also had LB in the substantia nigra. The frequency of LB in the substantia nigra (12%) was comparable to the frequency of LB in controls (9%).
Conclusions:
In contrast to increased frequency of LB in AD, there is no apparent interaction between LB and the tau pathology in PSP.