Evidence map›Paper›PMID 16103141›Full record

ArticleJournal of virology2005

Human endogenous retrovirus expression profiles in samples from brains of patients with schizophrenia and bipolar disorders.

Oliver Frank, Michelle Giehl, Chun Zheng, Rüdiger Hehlmann, Christine Leib-Mösch, Wolfgang Seifarth

Open access · greenAbstract readComparative Study
In one paragraph

Article in Journal of virology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 98 papers.

0numbers the graph read from it
0cells of the map it votes in
98citing papers in PubMed
13.7field-weighted citation impact, top 1% 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

98 citing papers in PubMed, 174 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Review
  5. Association of Human Endogenous Retrovirus HERV-K18 Variant with Bipolar Disorder Type I.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2025
    Article
  6. Article
  7. Article
  8. Review
  9. Functional Bidirectionality of ERV-Derived Long Non-Coding RNAs in Humans.International journal of molecular sciences · 2024
    Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Microbes and Mental Illness: Past, Present, and Future.Healthcare (Basel, Switzerland) · 2023
    Review
  16. Article
  17. Review
  18. Article
  19. Transposable Elements Co-Option in Genome Evolution and Gene Regulation.International journal of molecular sciences · 2023
    Review
  20. Article

38 more citing papers are in PubMed but not listed here.

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

6 authors at 3 institutions in 1 country.

Oliver FrankMedical Clinic III, Faculty of Clinical Medicine Mannheim, University of Heidelberg, Germany. oliver.frank@med3.ma.uni-heidelberg.de
Michelle Giehl
Chun Zheng
Rüdiger Hehlmann
Christine Leib-Mösch
Wolfgang Seifarth
University Medical Centre Mannheim · DEHeidelberg University · DEInstitute of Bioinformatics and Systems Biology · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The detection and identification of retroviral transcripts in brain samples, cerebrospinal fluid, and plasma of individuals with recent-onset schizophrenia and schizoaffective disorders suggest that activation or upregulation of distinct human endogenous retroviruses (HERVs) may play a role in the etiopathogenesis of neuropsychiatric diseases. To test this hypothesis, we performed a comprehensive microarray-based analysis of HERV transcriptional activity in human brains. We investigated 50 representative members of 20 HERV families in a total of 215 brain samples derived from individuals with schizophrenia or bipolar disorders and matched controls. A characteristic brain-specific retroviral activity profile was found that consists of members of the class I families HERV-E, HERV-F, and ERV9 and members of HERV-K taxa. In addition to these constitutively expressed HERVs, a number of differentially active HERV elements were identified in all brain samples independent of the disease pattern that may reflect differences in the genetic background of the tested individuals. Only a subgroup of the HML-2 family (HERV-K10) was significantly overrepresented in both bipolar-disorder- and schizophrenia-associated samples compared to healthy brains, suggesting a potential association with disease. Real-time PCR analysis of HERV env transcripts with coding capacity potentially involved in neuroinflammatory conditions revealed that env expression of HERV-W, HERV-FRD, and HML-2 remains unaffected regardless of the clinical picture. Our data suggest that HERV transcription in brains is weakly correlated with schizophrenia and related diseases but may be influenced by the individual genetic background, brain-infiltrating immune cells, or medical treatment.

Indexed as

AnimalsBipolar DisorderBrainEndogenous RetrovirusesGene Expression ProfilingHumansRNA, MessengerRNA, ViralSchizophreniaViral Envelope ProteinsRNA, MessengerRNA, ViralViral Envelope Proteins

Identifiers

PMID16103141
PMCPMC1193590
OpenAlexW2150582595

What OpenQuestion holds

Textmetadata
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.