Evidence map›Paper›PMID 20947467›Full record

ArticleEnvironmental health perspectives2011

Proton magnetic resonance spectroscopy in adults with childhood lead exposure.

Kim M Cecil, Kim N Dietrich, Mekibib Altaye, John C Egelhoff, Diana M Lindquist, Christopher J Brubaker, Bruce P Lanphear

Open access · diamondAbstract read
In one paragraph

Article in Environmental health perspectives, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
3.8field-weighted citation impact, top 8% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 72 citations in OpenAlex.

  1. Rethinking Meta-Analysis: Applications for Air Pollution Data and Beyond.Risk analysis : an official publication of the Society for Risk Analysis · 2015
    Pooled it
  2. Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Childhood Lead Exposure and Adult Neurodegenerative Disease.Journal of Alzheimer's disease : JAD · 2018
    Review
  12. Article
  13. Metabolic Imaging in Humans.Topics in magnetic resonance imaging : TMRI · 2016
    Review
  14. Review
  15. Article
  16. Prenatal and early postnatal lead exposure in mice: neuroimaging findings.Quantitative imaging in medicine and surgery · 2015
    Article
  17. Review
  18. Article
  19. Article
  20. 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

7 authors at 3 institutions in 2 countries.

Kim M CecilCincinnati Children's Environmental Health Center at Cincinnati Children's Hospital Medical Center, Ohio 45229, USA. kim.cecil@chmcc.org
Kim N Dietrich
Mekibib Altaye
John C Egelhoff
Diana M Lindquist
Christopher J Brubaker
Bruce P Lanphear
Cincinnati Children's Hospital Medical Center · USBrown University · USPediatrics and Genetics · US

Funding

Study of Prevalent Neurotoxicants in ChildrenP01ES011261 · NIEHS · CINCINNATI CHILDRENS HOSP MED CTR · PI LANPHEAR, BRUCE P · 2001 to 2006
$6.4M
Neurobehavioral Late-Effects in Pediatric Brain TumorsR01CA112182 · NCI · CINCINNATI CHILDRENS HOSP MED CTR · PI RIS, M DOUGLAS · 2005 to 2010
$2.1M
Early Lead Exposure, ADHD & Persistent Criminality: Role of Genes and EnvironmentR01ES015559 · NIEHS · UNIVERSITY OF CINCINNATI · PI DIETRICH, KIM NELSON · 2007 to 2011
$1.5M
NCI NIH HHS R01 CA112182NIEHS NIH HHS P01 ES011261NIEHS NIH HHS R01 ES015559
6 · The paper itself

Abstract

backgroundChildhood lead exposure adversely affects neurodevelopment. However, few studies have examined changes in human brain metabolism that may underlie known adverse cognitive and behavioral outcomes.

objectiveWe examined the association between mean childhood blood lead levels and in vivo brain metabolite concentrations as adults, determined by proton magnetic resonance spectroscopy (MRS) in a birth cohort with documented low-to-moderate lead exposure.

methodsAdult participants from the Cincinnati Lead Study [n = 159; mean age (± SD), 20.8 ± 0.9 years] completed a quantitative, short-echo proton MRS protocol evaluating seven regions to determine brain concentrations of N-acetyl aspartate (NAA), creatine and phosphocreatine (Cr), cholines (Cho), myo-inositol, and a composite of glutamate and glutamine (GLX). Correlation and multiple linear regression analyses were conducted.

resultsMean childhood blood lead levels were associated with regionally specific brain metabolite concentrations adjusted for age at imaging and Full-Scale intelligence quotient. Adjusted analyses estimated for a unit (micrograms per deciliter) increase in mean childhood blood lead concentrations, a decrease of NAA and Cr concentration levels in the basal ganglia, a decrease of NAA and a decrease of Cho concentration levels in the cerebellar hemisphere, a decrease of GLX concentration levels in vermis, a decrease of Cho and a decrease of GLX concentration levels in parietal white matter, and a decrease of Cho concentration levels in frontal white matter.

conclusionsGray-matter NAA reductions associated with increasing childhood blood lead levels suggest that sustained childhood lead exposure produces an irreversible pattern of neuronal dysfunction, whereas associated white-matter choline declines indicate a permanent alteration to myelin architecture.

Indexed as

AdolescentAdultBrainChildChild, PreschoolEnvironmental ExposureEnvironmental PollutantsFemaleHumansInfantInfant, NewbornLeadLongitudinal StudiesMagnetic Resonance SpectroscopyMaleProtonsEnvironmental PollutantsLeadProtons

Identifiers

PMID20947467
PMCPMC3060006
OpenAlexW2091575507

What OpenQuestion holds

Textmetadata
LicenceCC0
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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.