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@ARTICLE{AbuRumeileh:281642,
author = {Abu-Rumeileh, Samir and Erhart, Deborah K and Barba,
Lorenzo and Konen, Franz Felix and Stapf, Caroline and
Senel, Makbule and Hudasch, Dominica and Steinacker, Petra
and Oeckl, Patrick and Weise, Christopher M and Ticozzi,
Nicola and Halbgebauer, Steffen and Verde, Federico and
Sühs, Kurt-Wolfram and Tumani, Hayrettin and Otto, Markus},
title = {{CSF} {B}eta-{S}ynuclein, {SNAP}-25, and {N}eurogranin in
{I}nfectious and {A}utoimmune {I}nflammatory {N}eurologic
{D}iseases.},
journal = {Neurology: Neuroimmunology $\&$ Neuroinflammation ;
official journal of the American Academy of Neurology},
volume = {12},
number = {6},
issn = {2332-7812},
address = {Philadelphia, Pa.},
publisher = {Wolters Kluwer},
reportid = {DZNE-2025-01160},
pages = {e200491},
year = {2025},
abstract = {Beta-synuclein (beta-syn), synaptosomal-associated protein
25 (SNAP-25), and neurogranin are CSF biomarkers of synaptic
damage, which have been poorly investigated in
non-neurodegenerative neurologic diseases. In this study, we
examined the diagnostic and prognostic role of these markers
compared with the neuroaxonal damage marker neurofilament
light chain protein (NfL) in infectious and autoimmune
inflammatory neurologic diseases (IINDs and AINDs).This
cohort study included CSF samples from patients with
different etiologies of IIND (varicella-zoster virus, herpes
simplex virus, tick-borne meningoencephalitis, bacterial
meningitis/(meningo)encephalitis, neuroborreliosis, or
other/unknown etiology) or AIND (autoimmune encephalitis or
other etiology) as well as controls.A total of 123 patients
with IINDs (mean age 55.23 ± 18.04 years, $43.2\%$ female),
22 with AINDs (age 60.41 ± 16.03 years, $81.8\%$ female),
and 95 controls (age 52.39 ± 17.94 years, $56.9\%$ female)
were enrolled. Compared with the control group, participants
with IINDs and AINDs showed higher concentrations of
beta-syn (p < 0.001 and p = 0.038, respectively),
neurogranin (p = 0.039 and p = 0.002, respectively), and NfL
(p < 0.001 and p = 0.001, respectively), with no differences
between the 2 latter groups. Overall, synaptic markers and
NfL demonstrated poor-to-moderate diagnostic accuracy in
discriminating between diagnostic groups (area under the
curve 0.366-0.809). All synaptic biomarkers were elevated in
participants with IINDs presenting with altered mental
status (beta-syn, p < 0.001; SNAP-25, p = 0.002; and
neurogranin, p = 0.008), seizures (beta-syn, p = 0.013;
SNAP-25, p = 0.005; and neurogranin, p = 0.004), and
inflammatory changes on neuroimaging (beta-syn, p = 0.016;
SNAP-25, p = 0.029; and neurogranin, p = 0.007).
Participants with AINDs requiring intensive care showed
higher levels of beta-syn (p = 0.033) and NfL (p = 0.002).
Participants with IINDs with a poor functional status
(modified Rankin Scale [mRS] scores of 3-6) exhibited higher
concentrations of beta-syn (p < 0.001), SNAP-25 (p = 0.022),
neurogranin (p = 0.004), and NfL (p < 0.001) compared with
those with mRS scores of 0-2. Accordingly, higher levels of
synaptic markers were associated with poorer short-term
outcomes in patients with IINDs, but not in those with
AINDs.Elevated CSF levels of beta-syn, neurogranin, and NfL
may suggest a common pattern of synaptic and neuroaxonal
damage in both IINDs and AINDs. Although these biomarkers
have limited value in distinguishing between different
diseases, they are associated with clinical severity and
with short-term outcome, particularly in patients with
IINDs.},
keywords = {Humans / Female / Male / Middle Aged / Neurogranin:
cerebrospinal fluid / Aged / Biomarkers: cerebrospinal fluid
/ Adult / Synaptosomal-Associated Protein 25: cerebrospinal
fluid / Autoimmune Diseases of the Nervous System:
cerebrospinal fluid / Autoimmune Diseases of the Nervous
System: diagnosis / Cohort Studies / Neuroinflammatory
Diseases: cerebrospinal fluid / Neuroinflammatory Diseases:
diagnosis / alpha-Synuclein: cerebrospinal fluid /
Encephalitis: cerebrospinal fluid / Encephalitis: diagnosis
/ Neurofilament Proteins: cerebrospinal fluid / Neurogranin
(NLM Chemicals) / Biomarkers (NLM Chemicals) /
Synaptosomal-Associated Protein 25 (NLM Chemicals) / SNAP25
protein, human (NLM Chemicals) / SNCA protein, human (NLM
Chemicals) / alpha-Synuclein (NLM Chemicals) / Neurofilament
Proteins (NLM Chemicals) / neurofilament protein L (NLM
Chemicals)},
cin = {AG Öckl / Clinical Study Center (Ulm)},
ddc = {610},
cid = {I:(DE-2719)5000073 / I:(DE-2719)5000077},
pnm = {353 - Clinical and Health Care Research (POF4-353)},
pid = {G:(DE-HGF)POF4-353},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:41061183},
doi = {10.1212/NXI.0000000000200491},
url = {https://pub.dzne.de/record/281642},
}