Evidence map›Paper›PMID 33400181›Full record

SynthesisNeurotoxicity research2021

Formaldehyde and Brain Disorders: A Meta-Analysis and Bioinformatics Approach.

Iemaan Rana, Linda Rieswijk, Craig Steinmaus, Luoping Zhang

Open access · bronzeAbstract readMeta-AnalysisReview
In one paragraph

Synthesis in Neurotoxicity research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
6.8field-weighted citation impact, top 2% 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

18 citing papers in PubMed, 58 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Review
  5. Review
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Gut Symptoms, Gut Dysbiosis and Gut-Derived Toxins in ALS.International journal of molecular sciences · 2024
    Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Smoking and Neuropsychiatric Disease-Associations and Underlying Mechanisms.International journal of molecular sciences · 2021
    Review
  17. Article
  18. 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

4 authors at 3 institutions in 2 countries.

Iemaan RanaDivision of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, USA.
Linda RieswijkDivision of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, USA.
Craig SteinmausDivision of Epidemiology and Biostatistics, School of Public Health, University of California Berkeley, Berkeley, CA, USA.
Luoping ZhangDivision of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, USA. luoping@berkeley.edu.ORCID http://orcid.org/0000-0001-7866-8391
University of California, Berkeley · USBerkeley Public Health Division · USMaastricht University · NL

Funding

Training CoreP42ES004705 · NIEHS · UNIVERSITY OF CALIFORNIA BERKELEY · PI MCHALE, CLIONA · 1987 to 2025
$74.6M
NIEHS NIH HHS P42 ES004705NIEHS NIH HHS P42ES004705
6 · The paper itself

Abstract

While there is significant investigation and investment in brain and neurodegenerative disease research, current understanding of the etiologies of illnesses like Alzheimer's disease (AD), Parkinson's disease (PD), amyotrophic lateral sclerosis (ALS), and brain cancer remains limited. Environmental exposure to the pollutant formaldehyde, an emerging neurotoxin widely used in industry, is suspected to play a critical role in mediating these disorders, although findings are limited and inconsistent. Focusing on highly exposed groups, we performed a meta-analysis of human epidemiological studies of formaldehyde and neurodegenerative disease (N =  19) or brain tumors (N = 12). To assess the biological plausibility of observed associations, we then conducted a bioinformatics analysis using WikiPathways and the Comparative Toxicogenomics Database and identified candidate genes and pathways that may be related to these interactions. We reported the meta-relative risk (meta-RR) of ALS following high exposures to formaldehyde was increased by 78% (meta-RR = 1.78, 95% confidence interval, CI 1.20-2.65). Similarly, the meta-RR for brain cancer was increased by 71% (meta-RR = 1.71; 95% CI 1.07-2.73) among highly exposed individuals. Multiple sensitivity analyses did not reveal sources of heterogeneity or bias. Our bioinformatics analysis revealed that the oxidative stress genes superoxide dismutase (SOD1, SOD2) and the pro-inflammatory marker tumor necrosis factor (TNF) were identified as the top relevant genes, and the folate metabolism, vitamin B

Indexed as

AnimalsBrainBrain DiseasesComputational BiologyEnvironmental ExposureFormaldehydeHumansNeurodegenerative DiseasesOccupational ExposureFormaldehydeAmyotrophic lateral sclerosisBrain tumorComparative toxicogenomics databaseHuman exposuresNeurodegenerative diseaseWikiPathways

Identifiers

PMID33400181
PMCPMC8102312
OpenAlexW3120581026

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.