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@ARTICLE{Kuzkina:1007799,
author = {Kuzkina, A. and Rößle, J. and Seger, A. and Panzer, C.
and Kohl, A. and Maltese, V. and Musacchio, T. and Blaschke,
S. J. and Tamgüney, G. and Kaulitz, S. and Rak, K. and
Scherzad, A. and Zimmermann, P. H. and Klussmann, J. P. and
Hackenberg, S. and Volkmann, J. and Sommer, C. and
Sommerauer, Michael and Doppler, K.},
title = {{C}ombining skin and olfactory α-synuclein seed
amplification assays ({SAA})—towards biomarker-driven
phenotyping in synucleinopathies},
journal = {npj Parkinson's Disease},
volume = {9},
number = {1},
issn = {2373-8057},
address = {London [u.a.]},
publisher = {Nature Publ. Group},
reportid = {FZJ-2023-02194},
pages = {79},
year = {2023},
abstract = {Seed amplification assays (SAA) are becoming commonly used
in synucleinopathies to detect α-synuclein aggregates.
Studies in Parkinson's disease (PD) and isolated REM-sleep
behavior disorder (iRBD) have shown a considerably lower
sensitivity in the olfactory epithelium than in CSF or skin.
To get an insight into α-synuclein (α-syn) distribution
within the nervous system and reasons for low sensitivity,
we compared SAA assessment of nasal brushings and skin
biopsies in PD (n = 27) and iRBD patients (n = 18) and
unaffected controls (n = 30). α-syn misfolding was overall
found less commonly in the olfactory epithelium than in the
skin, which could be partially explained by the nasal
brushing matrix exerting an inhibitory effect on
aggregation. Importantly, the α-syn distribution was not
uniform: there was a higher deposition of misfolded α-syn
across all sampled tissues in the iRBD cohort compared to PD
(supporting the notion of RBD as a marker of a more
malignant subtype of synucleinopathy) and in a subgroup of
PD patients, misfolded α-syn was detectable only in the
olfactory epithelium, suggestive of the recently proposed
brain-first PD subtype. Assaying α-syn of diverse origins,
such as olfactory (part of the central nervous system) and
skin (peripheral nervous system), could increase diagnostic
accuracy and allow better stratification of patients.},
cin = {INM-3 / IBI-7},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406 / I:(DE-Juel1)IBI-7-20200312},
pnm = {5252 - Brain Dysfunction and Plasticity (POF4-525) / 5244 -
Information Processing in Neuronal Networks (POF4-524)},
pid = {G:(DE-HGF)POF4-5252 / G:(DE-HGF)POF4-5244},
typ = {PUB:(DE-HGF)16},
pubmed = {37248217},
UT = {WOS:000996937700001},
doi = {10.1038/s41531-023-00519-8},
url = {https://juser.fz-juelich.de/record/1007799},
}