Evidence map›Paper›PMID 34046839›Full record

SynthesisEnvironmental science and pollution research international2021

Lead exposure and its association with neurological damage: systematic review and meta-analysis.

Luciana Guimarães Eiró, Maria Karolina Martins Ferreira, Déborah Ribeiro Frazão, Walessa Alana Bragança Aragão, Renata Duarte Souza-Rodrigues, Nathalia Carolina Fernandes Fagundes, Lucianne Cople Maia, Rafael Rodrigues Lima

Abstract readMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Environmental science and pollution research international, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.9field-weighted citation impact, top 16% 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

8 citing papers in PubMed, 28 citations in OpenAlex.

  1. Duckweed (Frontiers in nutrition · 2026
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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 2 countries.

Luciana Guimarães EiróLaboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 01 Augusto Correa Street, Guama, Belém, PA, 66075-110, Brazil.
Maria Karolina Martins FerreiraLaboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 01 Augusto Correa Street, Guama, Belém, PA, 66075-110, Brazil.
Déborah Ribeiro FrazãoLaboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 01 Augusto Correa Street, Guama, Belém, PA, 66075-110, Brazil.
Walessa Alana Bragança AragãoLaboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 01 Augusto Correa Street, Guama, Belém, PA, 66075-110, Brazil.
Renata Duarte Souza-RodriguesLaboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 01 Augusto Correa Street, Guama, Belém, PA, 66075-110, Brazil.
Nathalia Carolina Fernandes FagundesSchool of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada.
Lucianne Cople MaiaDepartment of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Rafael Rodrigues LimaLaboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 01 Augusto Correa Street, Guama, Belém, PA, 66075-110, Brazil. rafalima@ufpa.br.ORCID http://orcid.org/0000-0003-1486-4013
Universidade Federal do Pará · BRUniversidade Federal do Rio de Janeiro · BRUniversity of Alberta · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Lead (Pb) is one of the most toxic and abundant elements in the earth's crust, which is pointed out that the intoxication caused by it may damage biological systems. This systematic review with meta-analysis aimed to evaluate the association between Pb exposure and neurological damage. This work was executed according to PRISMA guidelines, and seven online databases were consulted. Based on the PECO strategy, studies presenting humans as participants (populations) exposed to Pb (exposure) compared to non-exposed to Pb (control) evaluating the neurological impairment (outcome) were included. The quality and risk of bias were verified by Fowkes and Fulton checklist. Two meta-analyses were conducted considering Digit Symbol and Profile Mood tests. The certainty of the evidence was evaluated with the GRADE tool. This review identified 2019 studies, of which 12 were eligible according to the inclusion criteria. Eight were considered with a low risk of bias. All the studies elected showed that exposure to Pb is associated with neurological damage, but the meta-analysis did not show any difference for the evaluated tests, and the certainty of the evidence was considered very low. Nevertheless, the included studies showed that Pb occupational exposure is associated with neurological damage, and the main parameters evaluated for possible neurological damage were related to mnemonic aspects, reaction time, intelligence, attention disorders, and mood changes. Thus, our results revealed that a definitive demonstration of an association of Pb and neurological changes in humans is still a pending issue. Future studies should take into consideration more confident methods to answer this question.

Indexed as

LeadOccupational ExposureHumansLeadAssociationDamageExposureLeadNeurologicalNeurotoxicOccupationalSystematic review

Identifiers

PMID34046839
OpenAlexW3165627865

What OpenQuestion holds

Textmetadata
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.