Evidence map›Paper›PMID 22560997›Full record

ArticleNeurotoxicology2012

Selenium induces cholinergic motor neuron degeneration in Caenorhabditis elegans.

Annette O Estevez, Catherine L Mueller, Kathleen L Morgan, Nathaniel J Szewczyk, Luke Teece, Antonio Miranda-Vizuete, Miguel Estevez

Abstract read
In one paragraph

Article in Neurotoxicology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

29 citing papers in PubMed, 77 citations in OpenAlex.

  1. Article
  2. Selenium-EnrichedAntioxidants (Basel, Switzerland) · 2024
    Article
  3. Review
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  6. Role of environmental pollutants in Alzheimer's disease: a review.Environmental science and pollution research international · 2020
    Review
  7. Effect of environmental toxicants on neuronal functions.Environmental science and pollution research international · 2020
    Review
  8. Article
  9. HIF-1 Has a Central Role inFrontiers in genetics · 2020
    Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  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 4 institutions in 3 countries.

Annette O EstevezDepartment of Neurology, University of Arizona, Tucson, AZ 85724-5023, USA. aestevez@email.arizona.edu
Catherine L Mueller
Kathleen L Morgan
Nathaniel J Szewczyk
Luke Teece
Antonio Miranda-Vizuete
Miguel Estevez
University of Arizona · USHospital Universitario Virgen del Rocío · ESUniversity of Nottingham · GBVA Pittsburgh Healthcare System · US

Funding

Gene Networks Regulating Muscle Protein DegradationR01AR054342 · NIAMS · UNIVERSITY OF NOTTINGHAM · PI SZEWCZYK, NATHANIEL J. · 2007 to 2010
$902k
Genetic Analysis of Selenium ToxicityR21ES012305 · NIEHS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI ESTEVEZ, ANNETTE O · 2003 to 2005
$385k
Medical Research Council MR/K00414X/1NIAMS NIH HHS R01 AR054342NIEHS NIH HHS R21 ES012305
6 · The paper itself

Abstract

Selenium is an essential micronutrient required for cellular antioxidant systems, yet at higher doses it induces oxidative stress. Additionally, in vertebrates environmental exposures to toxic levels of selenium can cause paralysis and death. Here we show that selenium-induced oxidative stress leads to decreased cholinergic signaling and degeneration of cholinergic neurons required for movement and egg-laying in Caenorhabditis elegans. Exposure to high levels of selenium leads to proteolysis of a soluble muscle protein through mechanisms suppressible by two pharmacological agents, levamisole and aldicarb which enhance cholinergic signaling in muscle. In addition, animals with reduction-of-function mutations in genes encoding post-synaptic levamisole-sensitive acetylcholine receptor subunits or the vesicular acetylcholine transporter developed impaired forward movement faster during selenium-exposure than normal animals, again confirming that selenium reduces cholinergic signaling. Finally, the antioxidant reduced glutathione, inhibits selenium-induced reductions in egg-laying through a cellular protective mechanism dependent on the C. elegans glutaredoxin, GLRX-21. These studies provide evidence that the environmental toxicant selenium induces neurodegeneration of cholinergic neurons through depletion of glutathione, a mechanism linked to the neuropathology of Alzheimer's disease, amyotrophic lateral sclerosis, and Parkinson's disease.

Indexed as

Motor NeuronsActinsAdjuvants, ImmunologicAnalysis of VarianceAnimalsAnimals, Genetically ModifiedAntioxidantsCaenorhabditis elegansCaenorhabditis elegans ProteinsCell CountCholinergic NeuronsDose-Response Relationship, DrugGalactosidesGlutathioneGreen Fluorescent ProteinsLevamisoleActinsAdjuvants, ImmunologicAntioxidantsbeta-galactosideCaenorhabditis elegans ProteinsGalactosidesGlutathioneGreen Fluorescent ProteinsLevamisoleMuscle ProteinsReceptors, CholinergicSeleniumVesicular Acetylcholine Transport Proteins

Identifiers

PMID22560997
PMCPMC3445719
OpenAlexW1986330164

What OpenQuestion holds

Textmetadata
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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.