Evidence map›Paper›PMID 27059237›Full record

ArticleMetabolic brain disease2016

Evaluation of whole blood zinc and copper levels in children with autism spectrum disorder.

Elena Cristina Crăciun, Geir Bjørklund, Alexey A Tinkov, Mauricio A Urbina, Anatoly V Skalny, Florina Rad, Eleonora Dronca

Abstract read
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In one paragraph

Article in Metabolic brain disease, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 3 pooled it
5.0field-weighted citation impact, top 5% 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

26 citing papers in PubMed, 3 syntheses or guidelines pooled it, 66 citations in OpenAlex.

  1. Zinc deficiency and zinc/copper ratio imbalance in autism spectrum disorder: a reanalysis of six multinational studies.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2026
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  11. The Role of Zinc and NMDA Receptors in Autism Spectrum Disorders.Pharmaceuticals (Basel, Switzerland) · 2022
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  19. Oxidative Stress in Autism Spectrum Disorder.Molecular neurobiology · 2020
    Review
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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 6 institutions in 5 countries.

Elena Cristina CrăciunPharmaceutical Biochemistry and Clinical Laboratory Department, Faculty of Pharmacy, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.
Geir BjørklundCouncil for Nutritional and Environmental Medicine, Toften 24, 8610, Mo i Rana, Norway. bjorklund@conem.org.
Alexey A TinkovDepartment of Biochemistry, Orenburg State Medical University, Orenburg, Russia.
Mauricio A UrbinaDepartment of Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK.
Anatoly V SkalnyOrenburg State University, Orenburg, Russia.
Florina RadChild and Adolescent Psychiatry Department, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania.
Eleonora DroncaDepartment of Molecular Sciences, Faculty of Medicine, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.
Iuliu Hațieganu University of Medicine and Pharmacy · ROAll-Russian Scientific Research Institute of Medicinal and Aromatic Plants · RUCarol Davila University of Medicine and Pharmacy · ROOrenburg State Medical Academy · RUThe Research Council of Norway · NOUniversity of Exeter · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Zinc (Zn) and copper (Cu) are important trace elements for cognitive development and normal neurological functioning. Autism spectrum disorder (ASD) is a common neurological disorder, which has previously been associated with the levels of some trace elements in the blood. However, clinical data regarding the potential implication of Zn and Cu in patients with ASD are still insufficient. Therefore, the aim of the present study was to investigate the whole blood levels of Zn and Cu in a cohort of 28 children with ASD and 28 age- and gender-matched healthy controls. Whole blood Zn and Cu levels were assessed using inductively-coupled plasma-sector field mass spectrometry. Both in the control and in the ASD group, the values of whole blood Cu and Zn were characterized by a Gaussian distribution. The results indicate that the ASD children were characterized by ~10 % (p = 0.005) and ~12 % (p = 0.015) lower levels of whole blood Zn and Zn/Cu ratio, respectively, in comparison to controls. No significant difference in whole blood Cu was observed. However, Cu/Zn ratio was ~15 % (p = 0.008) higher in ASD children than that in the control ones. The results of the present study may be indicative of Zn deficiency in ASD children. Taking into account Zn-mediated up-regulation of metallothionein (MT) gene expression, these findings suggest a possible alteration in the functioning of the neuroprotective MT system. However, further investigations are required to test this hypothesis.

Indexed as

Autism Spectrum DisorderChildChild, PreschoolCopperFemaleHumansMaleMass SpectrometryTrace ElementsZincCopperTrace ElementsZincAutismChildrenCopperWhole bloodZinc

Identifiers

PMID27059237
OpenAlexW2323422917

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.