Evidence map›Paper›PMID 26508811›Full record

ArticleBehavioural neurology2015

Assessment of Hair Aluminum, Lead, and Mercury in a Sample of Autistic Egyptian Children: Environmental Risk Factors of Heavy Metals in Autism.

Farida El Baz Mohamed, Eman Ahmed Zaky, Adel Bassuoni El-Sayed, Reham Mohammed Elhossieny, Sally Soliman Zahra, Waleed Salah Eldin, Walaa Yousef Youssef, Rania Abdelmgeed Khaled, Azza Mohamed Youssef

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Behavioural neurology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03495492 (Dermal Chelation Lowers White Blood Cell Count in Chronic Lymphocytic Leukemia), which is not on this map. Cited by 38 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 2 pooled it
6.4field-weighted citation impact, top 3% 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.

NCT03495492 naunknown statusnot on this mapstarted 2018, after this paper: background citation

Dermal Chelation Lowers White Blood Cell Count in Chronic Lymphocytic Leukemia

TypeinterventionalSponsorOptimum Health, Natural Healthcare CenterRan2018 to 2019Enrolled50ConditionsChronic Lymphocytic LeukemiaArmsDermal Chelation, Nutritional Therapy
3 · Its place in the literature

Who cites it

38 citing papers in PubMed, 2 syntheses or guidelines pooled it, 109 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
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  6. Article
  7. Article
  8. Human hair as a diagnostic tool in medicine.Biochemistry and biophysics reports · 2025
    Review
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  12. Review
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  19. Review
  20. Associations of Metabolic Genes (International journal of environmental research and public health · 2021
    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

9 authors at 2 institutions in 1 country.

Farida El Baz MohamedPediatrics Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
Eman Ahmed ZakyPediatrics Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
Adel Bassuoni El-SayedNational Institute of Standards, Giza, Egypt.
Reham Mohammed ElhossienyPediatrics Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
Sally Soliman ZahraPediatrics Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
Waleed Salah EldinCommunity Medicine Department, Ain Shams University, Cairo, Egypt.
Walaa Yousef YoussefPediatrics Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
Rania Abdelmgeed KhaledPediatrics Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
Azza Mohamed YoussefPediatrics Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
Ain Shams University · EGNational Institute of Standards · EG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsThe etiological factors involved in the etiology of autism remain elusive and controversial, but both genetic and environmental factors have been implicated. The aim of this study was to assess the levels and possible environmental risk factors and sources of exposure to mercury, lead, and aluminum in children with autism spectrum disorder (ASD) as compared to their matched controls.

methodsOne hundred ASD children were studied in comparison to 100 controls. All participants were subjected to clinical evaluation and measurement of mercury, lead, and aluminum through hair analysis which reflects past exposure.

resultsThe mean Levels of mercury, lead, and aluminum in hair of the autistic patients were significantly higher than controls. Mercury, lead, and aluminum levels were positively correlated with maternal fish consumptions, living nearby gasoline stations, and the usage of aluminum pans, respectively.

conclusionLevels of mercury, lead, and aluminum in the hair of autistic children are higher than controls. Environmental exposure to these toxic heavy metals, at key times in development, may play a causal role in autism.

Indexed as

AdolescentAluminumAutistic DisorderChildChild, PreschoolEgyptEnvironmental ExposureFemaleHairHeavy Metal PoisoningHumansLeadMaleMercuryPoisoningRisk FactorsAluminumLeadMercury

Identifiers

PMID26508811
PMCPMC4609793
OpenAlexW2141387095

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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.