Evidence map›Paper›PMID 30543686›Full record

ArticlePloS one2018

Epitope specificity of anti-synapsin autoantibodies: Differential targeting of synapsin I domains.

Robert Mertens, Sarah Melchert, Daniel Gitler, Morten Brix Schou, Sverre Georg Saether, Arne Vaaler, Johannes Piepgras, Elena Kochova, Fabio Benfenati, Gudrun Ahnert-Hilger and 2 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.5field-weighted citation impact, top 38% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 6 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 4 countries.

Robert MertensInstitute of Integrative Neuroanatomy, Charité -Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
Sarah MelchertInstitute of Integrative Neuroanatomy, Charité -Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
Daniel GitlerDepartment of Physiology and Cell Biology, Faculty of Health Sciences and Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
Morten Brix SchouDepartment of Psychiatry, St. Olav's University Hospital, Trondheim, Norway.
Sverre Georg SaetherDepartment of Psychiatry, St. Olav's University Hospital, Trondheim, Norway.
Arne VaalerDepartment of Psychiatry, St. Olav's University Hospital, Trondheim, Norway.
Johannes PiepgrasInstitute of Integrative Neuroanatomy, Charité -Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
Elena KochovaInstitute of Integrative Neuroanatomy, Charité -Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
Fabio BenfenatiCenter for Synaptic Neuroscience and Technology, Istituto Italiano di Tecnologia, Genova, Italy.
Gudrun Ahnert-HilgerInstitute of Integrative Neuroanatomy, Charité -Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
Klemens RuprechtDepartment of Neurology, Charité -Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
Markus HöltjeInstitute of Integrative Neuroanatomy, Charité -Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.ORCID 0000-0003-3193-4140
Humboldt-Universität zu Berlin · DENorwegian University of Science and Technology · NOBen-Gurion University of the Negev · ILItalian Institute of Technology · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo identify the specific domains of the presynaptic protein synapsin targeted by recently described autoantibodies to synapsin.

methodsSera of 20 and CSF of two patients with different psychiatric and neurological disorders previously tested positive for immunoglobulin (Ig)G antibodies to full-length synapsin were screened for IgG against synapsin I domains using HEK293 cells transfected with constructs encoding different domains of rat synapsin Ia. Additionally, IgG subclasses were determined using full-length synapsin Ia. Serum and CSF from one patient were also screened for IgA autoantibodies to synapsin I domains. Sera from nine and CSF from two healthy subjects were analyzed as controls.

resultsIgG in serum from 12 of 20 IgG synapsin full-length positive patients, but from none of the healthy controls, bound to synapsin domains. Of these 12 sera, six bound to the A domain, five to the D domain, and one to the B- (and possibly A-), D-, and E-domains of synapsin I. IgG antibodies to the D-domain were also detected in one of the CSF samples. Determination of IgG subclasses detected IgG1 in two sera and one CSF, IgG2 in none of the samples, IgG3 in two sera, and IgG4 in eight sera. One patient known to be positive for IgA antibodies to full-length synapsin had IgA antibodies to the D-domain in serum and CSF.

conclusionsAnti-synapsin autoantibodies preferentially bind to either the A- or the D-domain of synapsin I.

Indexed as

AdultAgedAutoantibodiesCase-Control StudiesEpitopesFemaleHEK293 CellsHumansImmunoglobulin AImmunoglobulin GMaleMental DisordersMiddle AgedNeurodegenerative DiseasesProtein DomainsSynapsinsAutoantibodiesEpitopesImmunoglobulin AImmunoglobulin GSynapsins

Identifiers

PMID30543686
PMCPMC6292584
OpenAlexW2903672731

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.