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The pathology of REM sleep behavior disorder with comorbid Lewy body dementia

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TLDR
Examination of brain revealed Lewy bodies as well as marked neuronal loss in brainstem monoaminergic nuclei-particularly locus coeruleus and substantia nigra-that inhibit cholinergic neurons in the pedunculopontine nucleus mediating atonia during REM sleep.
Abstract
A patient with REM sleep behavior disorder who subsequently developed probable Lewy body dementia is now reported to have a definite pathologic diagnosis of Lewy body dementia. Examination of brain revealed Lewy bodies as well as marked neuronal loss in brainstem monoaminergic nuclei-particularly locus coeruleus and substantia nigra-that inhibit cholinergic neurons in the pedunculopontine nucleus mediating atonia during REM sleep.

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Control of Sleep and Wakefulness

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Pathophysiology of REM sleep behaviour disorder and relevance to neurodegenerative disease

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The scientific and clinical basis for the treatment of Parkinson disease (2009)

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Visual hallucinations in Lewy body disease relate to Lewy bodies in the temporal lobe.

TL;DR: Cognitive fluctuations and/or visual hallucinations were not good predictors of DLB in pathologically proven patients, although the absence of these features early in the disease course was highly predictive of PDD.
Journal ArticleDOI

REM sleep behavior disorder

TL;DR: Rapid eye movement (REM) sleep behavior disorder (RBD) is a parasomnia manifested by vivid, often frightening dreams associated with simple or complex motor behavior during REM sleep as discussed by the authors.
References
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Journal ArticleDOI

Consensus guidelines for the clinical and pathologic diagnosis of dementia with Lewy bodies (DLB) Report of the consortium on DLB international workshop

TL;DR: This work identified progressive disabling mental impairment progressing to dementia as the central feature of DLB, and identified optimal staining methods for each of these and devised a protocol for the evaluation of cortical LB frequency based on a brain sampling procedure consistent with CERAD.
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Editorial on Consensus Recommendations for the Postmortem Diagnosis of Alzheimer Disease from the National Institute on Aging and the Reagan Institute Working Group on Diagnostic Criteria for the Neuropathological Assessment of Alzheimer Disease

TL;DR: The consensus recommendations for improving the neuropathological criteria for the postmortem diagnosis of Alzheimer's disease are reported here, and the "position papers" by members of the Working Group that accompany this report elaborate on the research findings and concepts upon which these recommendations were based.
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Consensus recommendations for the postmortem diagnosis of Alzheimer's disease

TL;DR: The consensus recommendations for improving the neuropathological criteria for the postmortem diagnosis of Alzheimer's disease are reported here, and the "position papers" by members of the Working Group that accompany this report elaborate on the research findings and concepts upon which these recommendations were based.
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Report of the second dementia with Lewy body international workshop: Diagnosis and treatment

TL;DR: The second International Workshop of the Consortium on Dementia with Lewy Bodies met to review developments since publication of consensus guidelines for the clinical and pathologic diagnosis of DLB, recommending that the clinical consensus criteria be used in their current format.
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REM sleep behavior disorder and degenerative dementia: An association likely reflecting Lewy body disease

TL;DR: A group of predominantly male patients with a characteristic association of RBD and degenerative dementia is reported, and it is hypothesized that the underlying pathology in these patients is DLB.
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