Evidence map›Paper›PMID 22952630›Full record

ArticlePloS one2012

P2RX7: expression responds to sleep deprivation and associates with rapid cycling in bipolar disorder type 1.

Lena Backlund, Catharina Lavebratt, Louise Frisén, Pernilla Nikamo, Dzana Hukic Sudic, Lil Träskman-Bendz, Mikael Landén, Gunnar Edman, Marquis P Vawter, Urban Ösby and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 3 pooled it
2.3field-weighted citation impact, top 13% 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

18 citing papers in PubMed, 3 syntheses or guidelines pooled it, 41 citations in OpenAlex.

  1. Purinergic system dysfunction in mood disorders: a key target for developing improved therapeutics.Progress in neuro-psychopharmacology & biological psychiatry · 2015
    Pooled it
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  4. Review
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  8. Intracellular Signaling Cascades in Bipolar Disorder.Current topics in behavioral neurosciences · 2021
    Review
  9. Article
  10. Article
  11. Purinergic system in psychiatric diseases.Molecular psychiatry · 2018
    Review
  12. Review
  13. Article
  14. Heterozygosity for the Mood Disorder-Associated Variant Gln460Arg Alters P2X7 Receptor Function and Sleep Quality.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2017
    Article
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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

11 authors at 4 institutions in 2 countries.

Lena BacklundDepartment of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden. lena.backlund@sll.se
Catharina Lavebratt
Louise Frisén
Pernilla Nikamo
Dzana Hukic Sudic
Lil Träskman-Bendz
Mikael Landén
Gunnar Edman
Marquis P Vawter
Urban Ösby
Martin Schalling
Karolinska Institutet · SEKarolinska University Hospital · SELund University · SEUniversity of California, Irvine · US

Funding

Mitochondrial Dysfunction In SchizophreniaR01MH085801 · NIMH · UNIVERSITY OF CALIFORNIA-IRVINE · PI VAWTER, MARQUIS PHILIP · 2009 to 2020
$5.0M
NIMH NIH HHS R01 MH085801NIMH NIH HHS R01MH085801
6 · The paper itself

Abstract

contextRapid cycling is a severe form of bipolar disorder with an increased rate of episodes that is particularly treatment-responsive to chronotherapy and stable sleep-wake cycles. We hypothesized that the P2RX7 gene would be affected by sleep deprivation and be implicated in rapid cycling.

objectivesTo assess whether P2RX7 expression is affected by total sleep deprivation and if variation in P2RX7 is associated with rapid cycling in bipolar patients.

designGene expression analysis in peripheral blood mononuclear cells (PBMCs) from healthy volunteers and case-case and case-control SNP/haplotype association analyses in patients.

participantsHealthy volunteers at the sleep research center, University of California, Irvine Medical Center (UCIMC), USA (n = 8) and Swedish outpatients recruited from specialized psychiatric clinics for bipolar disorder, diagnosed with bipolar disorder type 1 (n = 569; rapid cycling: n = 121) and anonymous blood donor controls (n = 1,044).

resultsP2RX7 RNA levels were significantly increased during sleep deprivation in PBMCs from healthy volunteers (p = 2.3*10(-9)). The P2RX7 rs2230912 _A allele was more common (OR = 2.2, p = 0.002) and the ACGTTT haplotype in P2RX7 (rs1718119 to rs1621388) containing the protective rs2230912_G allele (OR = 0.45-0.49, p = 0.003-0.005) was less common, among rapid cycling cases compared to non-rapid cycling bipolar patients and blood donor controls.

conclusionsSleep deprivation increased P2RX7 expression in healthy persons and the putatively low-activity P2RX7 rs2230912 allele A variant was associated with rapid cycling in bipolar disorder. This supports earlier findings of P2RX7 associations to affective disorder and is in agreement with that particularly rapid cycling patients have a more vulnerable diurnal system.

Indexed as

Gene Expression RegulationSleep DeprivationAdolescentAdultAgedBipolar DisorderChildCohort StudiesFemaleGenetic Predisposition to DiseaseHaplotypesHumansLeukocytes, MononuclearMaleMiddle AgedModels, GeneticP2RX7 protein, humanReceptors, Purinergic P2X7

Identifiers

PMID22952630
PMCPMC3429455
OpenAlexW1999639342

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.