Evidence map›Paper›PMID 29449194›Full record

ArticleEBioMedicine2018

Prostaglandin D2 Receptor DP1 Antibodies Predict Vaccine-induced and Spontaneous Narcolepsy Type 1: Large-scale Study of Antibody Profiling.

Helle Sadam, Arno Pihlak, Anri Kivil, Susan Pihelgas, Mariliis Jaago, Priit Adler, Jaak Vilo, Olli Vapalahti, Toomas Neuman, Dan Lindholm and 3 more

Open access · goldAbstract read
In one paragraph

Article in EBioMedicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.5field-weighted citation impact, top 19% 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

16 citing papers in PubMed, 28 citations in OpenAlex.

  1. Article
  2. Exogenous prostaglandin DFrontiers in veterinary science · 2025
    Article
  3. Article
  4. Article
  5. The immunopathogenesis of narcolepsy type 1.Nature reviews. Immunology · 2024
    Review
  6. Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Observational
  14. Article
  15. Review
  16. Narcolepsy Associated with Pandemrix Vaccine.Current neurology and neuroscience reports · 2018
    Review
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

13 authors at 6 institutions in 3 countries.

Helle SadamProtobios Llc, Mäealuse 4, 12618 Tallinn, Estonia; Department of Gene Technology, Tallinn University of Technology, Akadeemia Tee 15, 12618 Tallinn, Estonia.
Arno PihlakProtobios Llc, Mäealuse 4, 12618 Tallinn, Estonia; Department of Gene Technology, Tallinn University of Technology, Akadeemia Tee 15, 12618 Tallinn, Estonia.
Anri KivilProtobios Llc, Mäealuse 4, 12618 Tallinn, Estonia.
Susan PihelgasProtobios Llc, Mäealuse 4, 12618 Tallinn, Estonia.
Mariliis JaagoProtobios Llc, Mäealuse 4, 12618 Tallinn, Estonia.
Priit AdlerInstitute of Computer Science, University of Tartu, Liivi 2-314, 50409 Tartu, Estonia; Quretec LLC, Ülikooli 6a, 51003 Tartu, Estonia.
Jaak ViloInstitute of Computer Science, University of Tartu, Liivi 2-314, 50409 Tartu, Estonia; Quretec LLC, Ülikooli 6a, 51003 Tartu, Estonia.
Olli VapalahtiDepartment of Virology, Medicum, Haartmaninkatu 3, 00014 University of Helsinki, Finland; Department of Veterinary Biosciences, University of Helsinki, Agnes Sjöbergin Katu 2, 00014 University of Helsinki, Finland; Virology and Immunology, HUSLAB, Helsinki University Hospital, 00290 Helsinki, Finland.
Toomas NeumanProtobios Llc, Mäealuse 4, 12618 Tallinn, Estonia; IPDx Immunoprofiling Diagnostics GmbH, Deutscher Platz 5e, 04103 Leipzig, Germany.
Dan LindholmDepartment of Biochemistry and Developmental Biology, Medicum, Haartmaninkatu 8, 00014 University of Helsinki, Finland; Minerva Foundation Medical Research Institute, Tukholmankatu 8, 00290 Helsinki, Finland.
Markku PartinenFinnish Narcolepsy Research Center, Helsinki Sleep Clinic, Vitalmed Research Center, Valimotie 21, 00380, Helsinki, Finland.
Antti VaheriDepartment of Virology, Medicum, Haartmaninkatu 3, 00014 University of Helsinki, Finland.
Kaia PalmProtobios Llc, Mäealuse 4, 12618 Tallinn, Estonia; Department of Gene Technology, Tallinn University of Technology, Akadeemia Tee 15, 12618 Tallinn, Estonia. Electronic address: kaia@protobios.com.
Protobios (Estonia) · EETallinn University of Technology · EEUniversity of Helsinki · FIQuretec (Estonia) · EEAava Medical Centre · FICS Diagnostics · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNeuropathological findings support an autoimmune etiology as an underlying factor for loss of orexin-producing neurons in spontaneous narcolepsy type 1 (narcolepsy with cataplexy; sNT1) as well as in Pandemrix influenza vaccine-induced narcolepsy type 1 (Pdmx-NT1). The precise molecular target or antigens for the immune response have, however, remained elusive.

methodsHere we have performed a comprehensive antigenic repertoire analysis of sera using the next-generation phage display method - mimotope variation analysis (MVA). Samples from 64 children and adolescents were analyzed: 10 with Pdmx-NT1, 6 with sNT1, 16 Pandemrix-vaccinated, 16 H1N1 infected, and 16 unvaccinated healthy individuals. The diagnosis of NT1 was defined by the American Academy of Sleep Medicine international criteria of sleep disorders v3.

findingsOur data showed that although the immunoprofiles toward vaccination were generally similar in study groups, there were also striking differences in immunoprofiles between sNT1 and Pdmx-NT1 groups as compared with controls. Prominent immune response was observed to a peptide epitope derived from prostaglandin D2 receptor (DP1), as well as peptides homologous to B cell lymphoma 6 protein. Further validation confirmed that these can act as true antigenic targets in discriminating NT1 diseased along with a novel epitope of hemagglutinin of H1N1 to delineate exposure to H1N1.

interpretationWe propose that DP1 is a novel molecular target of autoimmune response and presents a potential diagnostic biomarker for NT1. DP1 is involved in the regulation of non-rapid eye movement (NREM) sleep and thus alterations in its functions could contribute to the disturbed sleep regulation in NT1 that warrants further studies. Together our results also show that MVA is a helpful method for finding novel peptide antigens to classify human autoimmune diseases, possibly facilitating the design of better therapies.

Indexed as

AutoimmunityAdolescentAdultAmino Acid SequenceAntibodies, ViralAntigens, ViralAutoantibodiesAutoantigensBiomarkersChildEpitope MappingEpitopesFemaleHumansInfluenza A Virus, H1N1 SubtypeInfluenza, HumanAntibodies, ViralAntigens, ViralAutoantibodiesAutoantigensBiomarkersEpitopesInfluenza VaccinesPeptidesprostanoid D receptor 1, humanReceptors, ProstaglandinVaccinesAntibodyDP1H1N1Narcolepsy type 1PandemrixProstaglandin

Identifiers

PMID29449194
PMCPMC5925455
OpenAlexW2790252973

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.