Evidence map›Paper›PMID 28809856›Full record

ArticleTranslational psychiatry2017

Decreased NOX2 expression in the brain of patients with bipolar disorder: association with valproic acid prescription and substance abuse.

T Seredenina, S Sorce, F R Herrmann, X-J Ma Mulone, O Plastre, A Aguzzi, V Jaquet, K-H Krause

Open access · goldAbstract read
In one paragraph

Article in Translational psychiatry, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 4 pooled it
1.4field-weighted citation impact, top 18% 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

17 citing papers in PubMed, 4 syntheses or guidelines pooled it, 31 citations in OpenAlex.

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  17. Guidelines for the Detection of NADPH Oxidases by Immunoblot and RT-qPCR.Methods in molecular biology (Clifton, N.J.) · 2019
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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

8 authors at 3 institutions in 1 country.

T SeredeninaDepartment of Pathology and Immunology, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland.
S SorceInstitute of Neuropathology, University Hospital of Zurich, Zurich, Switzerland.
F R HerrmannDepartment of Internal Medicine, Rehabilitation and Geriatrics, Geneva University Hospitals, Geneva, Switzerland.
X-J Ma MuloneDepartment of Pathology and Immunology, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland.
O PlastreDepartment of Pathology and Immunology, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland.
A AguzziInstitute of Neuropathology, University Hospital of Zurich, Zurich, Switzerland.
V JaquetDepartment of Pathology and Immunology, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland.
K-H KrauseDepartment of Pathology and Immunology, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland.
University of Geneva · CHUniversity Hospital of Geneva · CHUniversity Hospital of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Neuroinflammation and increased oxidative stress are believed to contribute to the development of psychiatric diseases. Animal studies have implicated NADPH oxidases (NOX) as relevant sources of reactive oxygen species in the brain. We have analyzed the expression of NOX isoforms in post-mortem brain samples from patients with psychiatric disorders (schizophrenia, bipolar disorder) and non-psychiatric subjects. Two collections from the Stanley Medical Research Institute were studied: the Array Collection (RNA, 35 individuals per group), and a neuropathology consortium collection (paraffin-embedded sections, 15 individuals per group). Quantitative PCR analysis revealed expression of NOX2 and NOX4 in prefrontal cortex. No impact of psychiatric disease on NOX4 levels was detected. Remarkably, the expression of NOX2 was specifically decreased in prefrontal and cingulate cortices of bipolar patients, as compared with controls and schizophrenic patients. NOX2 expression was not statistically associated with demographic parameters and post-mortem interval, but correlated with brain pH. Immunostaining demonstrated that NOX2 was predominantly expressed in microglia, which was corroborated by a decrease in the microglial markers CD68 and CD11b in the cingulate cortex of bipolar disorder patients. The analysis of potentially confounding parameters showed association of valproic acid prescription and heavy substance abuse with lower levels of NOX2. Taken together, we did not observe changes of NOX2 in schizophrenic patients, but a marked decrease of microglial markers and NOX2 in the brain of bipolar patients. This might be an underlying feature of bipolar disorder and/or a consequence of valproic acid treatment and substance abuse.

Indexed as

AdultBipolar DisorderBrainFemaleGyrus CinguliHumansMaleMicrogliaMiddle AgedNADPH Oxidase 2NADPH Oxidase 4Prefrontal CortexRNA, MessengerSchizophreniaSubstance-Related DisordersValproic AcidCYBB protein, humanNADPH Oxidase 2NADPH Oxidase 4NOX4 protein, humanRNA, MessengerValproic Acid

Identifiers

PMID28809856
PMCPMC5611741
OpenAlexW2750181077

What OpenQuestion holds

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LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

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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.