5-ht2a receptor binding in the frontal cortex of parkinson’s disease patients and alpha-synuclein overexpressing mice: a postmortem study

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2016
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Abstract
The 5-HT2A receptor is highly involved in aspects of cognition and executive function and seen to be affected in neurodegenerative diseases like Alzheimer’s disease and related to the disease pathology. Even though Parkinson’s disease (PD) is primarily a motor disorder, reports of impaired executive function are also steadily being associated with this disease. Not much is known about the pathophysiology behind this. The aim of this study was thereby twofold: (1) to investigate 5-HT2A receptor binding levels in Parkinson’s brains and (2) to investigate whether PD associated pathology, alpha-synuclein (AS) overexpression, could be associated with 5-HT2A alterations. Binding density for the 5-HT2A-specific radioligand [3H]-MDL 100.907 was measured in membrane suspensions of frontal cortex tissue from PD patients. Protein levels of AS were further measured using western blotting. Results showed higher AS levels accompanied by increased 5-HT2A receptor binding in PD brains. In a separate study, we looked for changes in 5-HT2A receptors in the prefrontal cortex in 52-week-old transgenic mice overexpressing human AS. We performed region-specific 5-HT2A receptor binding measurements followed by gene expression analysis. The transgenic mice showed lower 5-HT2A binding in the frontal association cortex that was not accompanied by changes in gene expression levels. This study is one of the first to look at differences in serotonin receptor levels in PD and in relation to AS overexpression.
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rasmussen2016parkinson's5-ht2a Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Nadja Bredo Rasmussen;Mikkel Vestergaard Olesen;Tomasz Brudek;Per Plenge;Anders Bue Klein;Jenny E. Westin;Karina Fog;Gitta Wörtwein;Susana Aznar
Journal heat and mass transfer/waerme- und stoffuebertragung
Year 2016
DOI
10.1155/2016/3682936
URL
http://dx.doi.org/10.1155/2016/3682936
Keywords
neurology diseases of the nervous system

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