Laminar degeneration of frontal and temporal cortex in Parkinson disease dementia

Research output: Contribution to journalArticle

View graph of relations Save citation

Open

Authors

  • Richard A. Armstrong

Research units

Abstract

To investigate cortical laminar degeneration in Parkinson’s disease (PD) with dementia (PDD). Changes in density of α-synuclein-immunoreactive Lewy bodies (LB), Lewy neurites (LN), and Lewy grains (LG) together with surviving neurons, abnormally enlarged neurons (EN), vacuoles, and glial cell nuclei were measured across cortical laminae of frontal and temporal cortex in fifteen cases of PDD using quantitative methods and polynomial curve-fitting. Most frequently, LB and LN were distributed across all laminae, while LG were distributed in upper cortical laminae. Low densities of EN were present in most cases distributed across all cortical laminae. Densities of vacuoles and glia were greatest in upper and lower cortical laminae, respectively. In most gyri, there were no spatial correlations between the densities of LB, LN, and LG. Cortical degeneration of frontal and temporal lobes in PDD affects all cortical laminae. Laminar distributions may result from the spread of α-synuclein pathology from subcortical regions and subsequent spread via the cortico-cortical pathways. This spread may be a major factor in the development of dementia in PD.

Documents

Details

Original languageEnglish
Number of pages5
JournalNeurological Sciences
VolumeIn press
Early online date8 Feb 2017
DOIs
Publication statusE-pub ahead of print - 8 Feb 2017

Bibliographic note

The final publication is available at Springer via http://dx.doi.org/10.1007/s10072-017-2828-6

    Keywords

  • cortical degeneration, laminar distribution, Lewy body, Parkinson’s disease dementia (PDD), polynomial curve fitting, synucleinopathy

Employable Graduates; Exploitable Research

Copy the text from this field...