Evidence map›Paper›PMID 26151924›Full record

Trial reportTranslational psychiatry2015

Serum pro-BDNF/BDNF as a treatment biomarker for response to docosahexaenoic acid in traumatized people vulnerable to developing psychological distress: a randomized controlled trial.

Y Matsuoka, D Nishi, Y Tanima, M Itakura, M Kojima, K Hamazaki, H Noguchi, T Hamazaki

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Translational psychiatry, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 3 pooled it
2.0field-weighted citation impact, top 15% 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

19 citing papers in PubMed, 3 syntheses or guidelines pooled it, 36 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Trial
  6. Article
  7. Article
  8. Article
  9. Article
  10. Observational
  11. Oxidative Stress in Traumatic Brain Injury.International journal of molecular sciences · 2022
    Review
  12. PTSD as an Endothelial Disease: Insights From COVID-19.Frontiers in cellular neuroscience · 2021
    Review
  13. Antioxidant Therapies in Traumatic Brain Injury.Antioxidants (Basel, Switzerland) · 2020
    Review
  14. Article
  15. Article
  16. Observational
  17. Evidence-based complementary and alternative medicine : eCAM · 2019
    Article
  18. Review
  19. 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

8 authors at 1 institution in 1 country.

Y Matsuoka1] Department of Psychiatry, National Disaster Medical Center, Tachikawa, Japan [2] CREST, Japan Science and Technology Agency, Kawaguchi, Japan.
D Nishi1] Department of Psychiatry, National Disaster Medical Center, Tachikawa, Japan [2] CREST, Japan Science and Technology Agency, Kawaguchi, Japan.
Y Tanima1] CREST, Japan Science and Technology Agency, Kawaguchi, Japan [2] Health Research Institute, National Institute of Advanced Industrial Science and Technology, Ikeda, Japan.
M Itakura1] CREST, Japan Science and Technology Agency, Kawaguchi, Japan [2] Department of Biochemistry, Kitasato University School of Medicine, Sagamihara, Japan.
M Kojima1] CREST, Japan Science and Technology Agency, Kawaguchi, Japan [2] Health Research Institute, National Institute of Advanced Industrial Science and Technology, Ikeda, Japan.
K Hamazaki1] CREST, Japan Science and Technology Agency, Kawaguchi, Japan [2] Department of Public Health, Faculty of Medicine, University of Toyama, Toyama, Japan.
H NoguchiCREST, Japan Science and Technology Agency, Kawaguchi, Japan.
T Hamazaki1] CREST, Japan Science and Technology Agency, Kawaguchi, Japan [2] Toyama Jonan Onsen Daini Hospital, Toyama, Japan.
Japan Science and Technology Agency · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Our open-label pilot study showed that supplementation with docosahexaenoic acid (DHA) increased serum brain-derived neurotrophic factor (BDNF) levels and that there might be an association between changes in serum BDNF levels and reduced psychological distress. Animal research has indicated that a DHA-enriched diet increases BDNF in the brain. In this randomized double-blind controlled trial of severely injured patients vulnerable to posttraumatic stress disorder (PTSD) and depression, we examined whether DHA increases serum BDNF levels and whether changes in BDNF levels are associated with subsequent symptoms of PTSD and depression. Patients received 1470 mg per day of DHA plus 147 mg per day of eicosapentaenoic acid (EPA; n = 53) or placebo (n = 57) for 12 weeks. Serum levels of mature BDNF and precursor pro-BDNF at baseline and 12-week follow-up were measured using enzyme-linked immunosorbent assay kits. At 12 weeks, we used the Clinician-Administered PTSD Scale to assess PTSD symptoms and depressive symptoms by the Montgomery-Åsberg Depression Rating Scale. We found a significant increase in serum BDNF levels during the trial in the DHA and placebo groups with no interaction between time and group. Changes in BDNF levels were not associated with PTSD severity but negatively associated with depression severity (Spearman's ρ = -0.257, P = 0.012). Changes in pro-BDNF were also negatively associated with depression severity (Spearman's ρ = -0.253, P = 0.013). We found no specific effects of DHA on increased serum levels of BDNF and pro-BDNF; however, evidence in this study suggests that increased BDNF and pro-BDNF have a protective effect by minimizing depression severity.

Indexed as

AdolescentAdultAgedAged, 80 and overBiomarkersBrain-Derived Neurotrophic FactorDepressionDocosahexaenoic AcidsDouble-Blind MethodEicosapentaenoic AcidEnzyme-Linked Immunosorbent AssayFemaleHumansMaleMiddle AgedProtein PrecursorsBiomarkersBrain-Derived Neurotrophic Factorbrain-derived neurotrophic factor precursorDocosahexaenoic AcidsEicosapentaenoic AcidProtein Precursors

Identifiers

PMID26151924
PMCPMC5068717
OpenAlexW1545493030

What OpenQuestion holds

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LicenceCC BY
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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.