Evidence map›Paper›PMID 26011424›Full record

Trial reportPloS one2015

The effect of recombinant erythropoietin on plasma brain derived neurotrophic factor levels in patients with affective disorders: a randomised controlled study.

Maj Vinberg, Kamilla Miskowiak, Pernille Hoejman, Maria Pedersen, Lars Vedel Kessing

Registry-linked trialOpen access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00916552 (The Effects of Erythropoietin on Depressive Symptoms and Neurocognitive Deficits in Patients With Treatment Resistant Depression and in Patients With Remitted Bipolar Disorder - a Proof of Concept Study), which is not on this map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 14% 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.

NCT00916552 phase2completednot on this map

The Effects of Erythropoietin on Depressive Symptoms and Neurocognitive Deficits in Patients With Treatment Resistant Depression and in Patients With Remitted Bipolar Disorder - a Proof of Concept Study

TypeinterventionalSponsorLars Vedel Kessing, professor, MD, DMSc.Ran2009 to 2012Enrolled83ConditionsMood DisordersArmsErythropoietin
3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Erythropoietin Pathway: A Potential Target for the Treatment of Depression.International journal of molecular sciences · 2016
    Review
  10. 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

5 authors at 2 institutions in 1 country.

Maj VinbergPsychiatric Centre Copenhagen, Rigshospitalet, University Hospital of Copenhagen Blegdamsvej 9, DK-2100 Copenhagen, Denmark.
Kamilla MiskowiakPsychiatric Centre Copenhagen, Rigshospitalet, University Hospital of Copenhagen Blegdamsvej 9, DK-2100 Copenhagen, Denmark.
Pernille HoejmanCentre of Inflammation and Metabolism and Centre of Physical Activity Research, Rigshospitalet, 7641, Blegdamsvej 9, DK-2100 Copenhagen, Denmark.
Maria PedersenCentre of Inflammation and Metabolism and Centre of Physical Activity Research, Rigshospitalet, 7641, Blegdamsvej 9, DK-2100 Copenhagen, Denmark.
Lars Vedel KessingPsychiatric Centre Copenhagen, Rigshospitalet, University Hospital of Copenhagen Blegdamsvej 9, DK-2100 Copenhagen, Denmark.
Rigshospitalet · DKCopenhagen University Hospital · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

unlabelledThe study aims to investigate the effect of repeated infusions of recombinant erythropoietin (EPO) on plasma brain derived neurotrophic factor (BDNF) levels in patients with affective disorders. In total, 83 patients were recruited: 40 currently depressed patients with treatment-resistant depression (TRD) (Hamilton Depression Rating Scale-17 items (HDRS-17) score >17) (study 1) and 43 patients with bipolar disorder (BD) in partial remission (HDRS-17 and Young Mania Rating Scale (YMRS) ≤ 14) (study 2). In both studies, patients were randomised to receive eight weekly EPO (Eprex; 40,000 IU) or saline (0.9% NaCl) infusions in a double-blind, placebo-controlled, parallel--group design. Plasma BDNF levels were measured at baseline and at weeks 5, 9 and at follow up, week 14. In contrast with our hypothesis, EPO down regulated plasma BDNF levels in patients with TRD (mean reduction at week 9 (95% CI): EPO 10.94 ng/l (4.51-21.41 ng/l); mean increase at week 9: Saline 0.52 ng/l, p=0.04 (-5.88-4.48 ng/l) p=0.04, partial ŋ2=0.12). No significant effects were found on BDNF levels in partially remitted patients with BD (p=0.35). The present effects of EPO on BDNF levels in patients with TRD point to a role of neurotrophic factors in the potential effects of EPO seen in TRD and BD. The neurobiological mechanisms underlying these effects and the interaction between EPO and peripheral levels on BDNF need to be further elucidated in human studies including a broad range of biomarkers.

trial registrationClinicalTrials.gov: NCT00916552.

Indexed as

AdultBrain-Derived Neurotrophic FactorDepressive Disorder, Treatment-ResistantErythropoietinFemaleHumansMaleMood DisordersRecombinant ProteinsRemission InductionBDNF protein, humanBrain-Derived Neurotrophic FactorErythropoietinRecombinant Proteins

Identifiers

PMID26011424
PMCPMC4444304
OpenAlexW433988794

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.