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Alpha-synuclein is present in dental calculus but not altered in Parkinson's disease patients in comparison to controls

INTRODUCTION: In autopsy cases staged for sporadic Parkinson's disease (PD), the neuropathology is characterized by a preclinical phase that targets the enteric nervous system of the gastrointestinal tract (GIT). Therefore, the ENS might be a source of potential (presymptomatic) PD biomarkers....

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Main Authors: Schmid, Sabrina Franziska (Author) , Goldberg-Bockhorn, Eva (Author) , Schwarz, Silke (Author) , Rotter, Nicole (Author) , Kassubek, Jan Rainer (Author) , Del Tredici, Kelly (Author) , Pinkhardt, Elmar Hans (Author) , Otto, Markus (Author) , Ludolph, Albert C. (Author) , Oeckl, Patrick (Author)
Format: Article (Journal)
Language:English
Published: 29 March 2018
In: Journal of neurology
Year: 2018, Volume: 265, Issue: 6, Pages: 1334-1337
ISSN:1432-1459
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Author Notes:Sabrina Schmid, Eva Goldberg-Bockhorn, Silke Schwarz, Nicole Rotter, Jan Kassubek, Kelly Del Tredici, Elmar Pinkhardt, Markus Otto, Albert C. Ludolph, Patrick Oeckl
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Summary:INTRODUCTION: In autopsy cases staged for sporadic Parkinson's disease (PD), the neuropathology is characterized by a preclinical phase that targets the enteric nervous system of the gastrointestinal tract (GIT). Therefore, the ENS might be a source of potential (presymptomatic) PD biomarkers. - METHODS: In this clinically based study, we examined the alpha-synuclein (αSyn) concentration in an easily accessible protein storage medium of the GIT, dental calculus, in 21/50 patients with PD and 28/50 age- and gender-matched controls using ELISA. - RESULTS: αSyn was detectable in dental calculus and the median concentration in the control patients was 8.6 pg/mg calculus (interquartile range 2.6-13.1 pg/mg). αSyn concentrations were significantly influenced by blood contamination and samples with a hemoglobin concentration of > 4000 ng/mL were excluded. There was no significant difference of αSyn concentrations in the dental calculus of PD patients (5.76 pg/mg, interquartile range 2.91-9.74 pg/mg) compared to those in controls (p = 0.40). - CONCLUSION: The total αSyn concentration in dental calculus is not a suitable biomarker for sporadic PD. Disease-related variants such as oligomeric or phosphorylated αSyn in calculus might prove to be more specific.
Item Description:Published: 29 March 2018
Gesehen am 26.03.2020
Physical Description:Online Resource
ISSN:1432-1459

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