Evidence map›Paper›PMID 34967503›Full record

ArticleBrain and behavior2022

Serum concentration of zinc is elevated in clinically stable bipolar disorder patients.

Bo H Jonsson, Funda Orhan, Sanna Bruno, Ana Osório Oliveira, Timea Sparding, Mikael Landen, Carl M Sellgren

Open access · goldAbstract read
In one paragraph

Article in Brain and behavior, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the 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
1.1field-weighted citation impact, top 24% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 12 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Perturbations of Zinc Homeostasis and Onset of Neuropsychiatric Disorders.International journal of molecular sciences · 2025
    Review
  5. Article
  6. Review
  7. 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

7 authors at 3 institutions in 1 country.

Bo H JonssonDepartment of Clinical Neuroscience, Centre for Psychiatry Research, Stockholm & Stockholm Health Care Services, Stockholm County Council, Karolinska Institutet, Stockholm, Sweden.ORCID 0000-0002-6942-1482
Funda OrhanDepartment of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
Sanna BrunoDepartment of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
Ana Osório OliveiraDepartment of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
Timea SpardingSection of Psychiatry and Neurochemistry, The Sahlgrenska Academy at University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden.
Mikael LandenSection of Psychiatry and Neurochemistry, The Sahlgrenska Academy at University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden.
Carl M SellgrenDepartment of Clinical Neuroscience, Centre for Psychiatry Research, Stockholm & Stockholm Health Care Services, Stockholm County Council, Karolinska Institutet, Stockholm, Sweden.
Karolinska Institutet · SESahlgrenska University Hospital · SEStockholm County Council · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBipolar disorder (BD) is a chronic psychiatric disorder characterized by recurrent mood episodes interspersed with euthymic periods. A growing number of studies have indicated that zinc plays an important role in coordinating immune responses, as well as being involved in synaptic transmission. In the current study, we set out to measure serum levels of zinc in a meticulously phenotyped cohort of 121 euthymic BD subjects and 30 matched controls.

methodsSerum levels of zinc were measured by photometry. To assess the interplay between zinc levels and immune activation in BD, we measured serum levels of high-sensitive C-reactive protein (hsCRP) levels by immunoturbidimetric assay, and serum levels of monocyte chemoattractant protein-1 (MCP-1), chitinase 3-like protein 1 (YKL-40), and soluble cluster of differentiation 14 (sCD14) by electrochemiluminescence enzyme-linked immunosorbent assays. The baseline clinical diagnostic instrument for BD was the Affective Disorder Evaluation, and executive functioning was assessed by using the Delis-Kaplan Executive Function System.

resultsControlling for potential confounding factors, BD patients displayed increased serum levels of zinc unrelated to hsCRP, MCP-1, YKL-40, and sCD14 levels. Serum levels of zinc did not associate with executive functioning or measurements of disease severity. DISCUSSION: This study suggests that the zinc homeostasis is disturbed in BD and that this dyshomeostasis is not related to ongoing mood symptoms or immune activation. Of note, serum levels were increased and hence do not support continuous zinc supplementation in BD.

Indexed as

Bipolar DisorderZincAffectC-Reactive ProteinExecutive FunctionHumansC-Reactive ProteinZincbipolar patientscognitionC-reactive proteinserumzinc

Identifiers

PMID34967503
PMCPMC8785612
OpenAlexW4200492134

What OpenQuestion holds

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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.