Evidence map›Paper›PMID 28196427›Full record

ArticleBiological research for nursing2017

Neurocognitive Function Is Associated With Serum Iron Status in Early Adolescents.

Xiaopeng Ji, Naixue Cui, Jianghong Liu

Abstract read
In one paragraph

Article in Biological research for nursing, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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, 1 synthesis or guideline pooled it.

  1. Pooled it
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  8. Anemia after Pediatric Congenital Heart Surgery.Journal of pediatric intensive care · 2022
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  10. Review
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  13. Serum Biomarkers of Iron Status and Risk of Hepatocellular Carcinoma Development in Patients with Nonalcoholic Fatty Liver Disease.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2022
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  19. Observational
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

3 authors.

Xiaopeng Ji1 School of Nursing University of Pennsylvania, Philadelphia, PA, USA.
Naixue Cui1 School of Nursing University of Pennsylvania, Philadelphia, PA, USA.
Jianghong Liu1 School of Nursing University of Pennsylvania, Philadelphia, PA, USA.

Funding

Translational Research Support CoreP30ES013508 · NIEHS · UNIVERSITY OF PENNSYLVANIA · PI Rebecca A Simmons · 2006 to 2026
$35.3M
Lead exposure, externalizing behavior, and neurobiological mediating factorsR01ES018858 · NIEHS · UNIVERSITY OF PENNSYLVANIA · PI LIU, JIANGHONG · 2010 to 2014
$1.7M
Mechanisms that mediate the link between lead exposure and child behavior problemK02ES019878 · NIEHS · UNIVERSITY OF PENNSYLVANIA · PI LIU, JIANGHONG · 2011 to 2015
$656k
Environmental Toxicity, Malnutrition, and Children's Externalizing BehaviorK01ES015877 · NIEHS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI LIU, JIANGHONG · 2007 to 2010
$605k
NIEHS NIH HHS K01 ES015877NIEHS NIH HHS K02 ES019878NIEHS NIH HHS P30 ES013508NIEHS NIH HHS R01 ES018858
6 · The paper itself

Abstract

objectiveThe association between iron and neurocognition remains underexplored in adolescents, and the neurocognitive effects of low and high iron levels have yet to be established. The aim of this study was to investigate the relationships of low and high iron levels with neurocognitive domains in early adolescents.

methodThe sample comprised 428 adolescents (12.0 ± 0.4 years) from Jintan, China. Serum iron concentrations were analyzed from venous blood samples and classified into low, normal, and high levels according to the clinical reference range 75-175 μg/dl. Neurocognition was measured by the Penn Computerized Neurocognitive Battery and Wechsler Intelligence Scale. Generalized linear regression was used to analyze relationships.

resultsPrevalence rates of iron deficiency, normal iron, and high iron were 13.8%, 76.4%, and 9.8%, respectively. Compared with normal levels, iron deficiency was associated with slower performance in tasks that measured abstraction and mental flexibility (β = 107.5, p = .03) and spatial processing ability (β = 917.2, p = .04). High serum iron was associated with less accuracy in the spatial processing ability task (β = -2.2, p = .03) and a longer reaction time in the task assessing abstraction and mental flexibility (β = 702.8, p = .046) compared to normal levels.

conclusionBoth iron deficiency and high iron levels contribute to reduced neurocognitive performance in a domain-specific manner in early adolescents. The dual burden of iron under- and overnutrition should be incorporated into future interventions for improving brain development and cognitive function in adolescents, especially in a Chinese context.

Indexed as

AdolescentAdolescent HealthChinaCognitionCognition DisordersFemaleHumansIronMaleNeuropsychological TestsIronadolescenthigh iron exposureiron deficiencymicronutrientneurocognitive function

Identifiers

PMID28196427
PMCPMC5675069

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.