Evidence map›Paper›PMID 23764341›Full record

ArticleNeurotoxicology2013

Urinary delta-ALA: a potential biomarker of exposure and neurotoxic effect in rats co-treated with a mixture of lead, arsenic and manganese.

Vanda Andrade, M Luísa Mateus, M Camila Batoréu, Michael Aschner, A P Marreilha dos Santos

Abstract read
In one paragraph

Article in Neurotoxicology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 pooled it
3.1field-weighted citation impact, top 10% 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

16 citing papers in PubMed, 2 syntheses or guidelines pooled it, 41 citations in OpenAlex.

  1. Pooled it
  2. Societal-level Risk Factors Associated with Pediatric Hearing Loss: A Systematic Review.Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2014
    Pooled it
  3. Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Metal-induced nephrotoxicity to diabetic and non-diabetic Wistar rats.Environmental science and pollution research international · 2019
    Article
  10. Article
  11. Article
  12. The Metal Neurotoxins: An Important Role in Current Human Neural Epidemics?International journal of environmental research and public health · 2017
    Review
  13. Article
  14. Arsenic and manganese alter lead deposition in the rat.Biological trace element research · 2014
    Article
  15. Chemical mixtures and children's health.Current opinion in pediatrics · 2014
    Review
  16. Article
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

5 authors at 2 institutions in 2 countries.

Vanda Andradei-Med-UL, Faculty of Pharmacy, University of Lisbon, Lisbon, Portugal.
M Luísa Mateus
M Camila Batoréu
Michael Aschner
A P Marreilha dos Santos
University of Lisbon · PTVanderbilt University Medical Center · US

Funding

Structural Biology Facility CoreP30ES000267 · NIEHS · VANDERBILT UNIVERSITY · PI GUENGERICH, F PETER · 1985 to 2014
$20.3M
Mechanisms of Manganese NeurotoxicityR01ES010563 · NIEHS · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI Michael Aschner, Aaron B Bowman · 2001 to 2026
$11.9M
NIEHS NIH HHS ES R01 10563NIEHS NIH HHS P30 ES 000267NIEHS NIH HHS P30 ES000267NIEHS NIH HHS R01 ES010563
6 · The paper itself

Abstract

Lead (Pb), arsenic (As) and manganese (Mn) are neurotoxic elements that often occur in mixtures for which practically no information is available on biomarkers (BMs) for the evaluation of exposure/effects. Exposures to these metals may increase delta-aminolevulinic acid (delta-ALA), which in itself may potentiate neurotoxicity. The objective of this study was to investigate the utility of urinary delta-ALA (delta-ALA-U) levels as BM of exposure and/or neurotoxic effects induced by this mixture. Five groups of Wistar rats were treated for 8 days with Pb (5mg/kg), As (60mg/L), Mn (10mg/kg), the 3-metal mixture (same doses of the single metals), and control group. Motor activity was evaluated and 24-h urine collected before and after the treatment. 24-hours (h) after the last dose, the rats were sacrificed and the brains removed for analyses. Delta-ALA and metal levels were determined in brain and urine. Co-treated rats showed a significant (p<0.05) correlation between increased Pb, As, Mn and delta-ALA levels in the brain and decreased motor activity. Delta-ALA-U concentrations were higher in the mixture-treated group than the sum of the delta-ALA-U levels in each single-treated groups and discriminated (p<0.05) between the mixture and untreated rats. Moreover, delta-ALA-U was correlated (p<0.05) with brain delta-ALA levels. These results establish that treatments with this metal mixture exacerbate behavioral dysfunction, increasing most prominently brain Pb levels. This study is the first to establish that delta-ALA-U levels represent a sensitive BM of exposure/neurotoxic effect to this metal mixture.

Indexed as

Aminolevulinic AcidAnimalsArsenicBiomarkersBrainLeadMaleManganeseMotor ActivityRatsAminolevulinic AcidArsenicBiomarkersLeadManganeseBiomarkersDelta-aminolevulinic acidLead, arsenic and manganeseMetal mixturesNeurotoxicity

Identifiers

PMID23764341
PMCPMC3770785
OpenAlexW2053230197

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.