Journal
NEUROBIOLOGY OF AGING
Volume 23, Issue 2, Pages 245-254Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S0197-4580(01)00269-X
Keywords
extranigral pathology; Lewy bodies; Lewy neurites; limbic system; pathoanatomy; thalamus
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The Parkinson's disease (PD)-related inclusion body pathology comprises Lewy bodies (LBs) as well as Lewy neurites (LNs). The distribution and severity or this pathology were investigated in the thalamus of 12 autopsy cases with clinically diagnosed and neuropathologically confirmed PD. The LBs and LNs were visualized by immunoreactions against the protein a-synuclein. In the human thalamus during PD, a specific and highly stereotypical distribution pattern of LBs and LNs evolves. As in cortical and other subcortical regions, the components of human thalamus assigned to the limbic loop bear the brunt of the PD-related pathology. In contrast, the thalamic components integrated into the striatal and cerebellar loops as well as the primary sensory nuclei of the thalamus show at best a mildly developed pathology. Damage to the thalamic components of the limbic loop nuclei may contribute not only to the cognitive, emotional, and autonomic symptoms of PD but to the somatomotor and oculomotor dysfunctions as well. (C) 2002 Elsevier Science Inc. All rights reserved.
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