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: | , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
29 March 2018
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| In: |
Journal of neurology
Year: 2018, Volume: 265, Issue: 6, Pages: 1334-1337 |
| ISSN: | 1432-1459 |
| Online Access: |
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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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| 245 | 1 | 0 | |a Alpha-synuclein is present in dental calculus but not altered in Parkinson's disease patients in comparison to controls |c 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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| 520 | |a 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. | ||
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