Abstract
Copper-zinc superoxide dismutase (SOD1)-like immunoreactivity has been demonstrated in Lewy body-like inclusions (LIs) in brain tissues from patients with familial and sporadic amyotrophic lateral sclerosis. Using immunocytochemistry, we studied Lewy bodies (LBs), the original inclusions from which the term LI was derived, in five patients with Parkinson disease (PD). Surprisingly, many LBs were immunostained by an antibody against SOD1. There were two types of staining pattern: a diffuse pattern, and a peripheral pattern with an unstained core. An immunoelectron microscopic study demonstrated that the immunoreactive products were restricted to the fibrillary profiles, sparing the unstructured core. Our results showed that SOD1-like immunoreactivity occurred frequently in LBs and LIs, suggesting that a common cytopathological process is responsible for the formation of LB-type neuronal intracytoplasmic inclusions. Our results also suggest that SOD1 plays a role in the neurodegeneration associated with PD.
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Nishiyama, K., Murayama, S., Shimizu, J. et al. Cu/Zn superoxide dismutase-like immunoreactivity is present in Lewy bodies from Parkinson disease: a light and electron microscopic immunocytochemical study. Acta Neuropathol 89, 471–474 (1995). https://doi.org/10.1007/BF00571500
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DOI: https://doi.org/10.1007/BF00571500