Evidence map›Paper›PMID 23538937›Full record

ArticleNutrients2013

Selenium toxicity from a misformulated dietary supplement, adverse health effects, and the temporal response in the nail biologic monitor.

John Steven Morris, Stacy B Crane

Open access · goldAbstract read
In one paragraph

Article in Nutrients, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 2 pooled it
3.2field-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

48 citing papers in PubMed, 2 syntheses or guidelines pooled it, 111 citations in OpenAlex.

  1. Selenium for preventing cancer.The Cochrane database of systematic reviews · 2018
    Pooled it
  2. Selenium for preventing cancer.The Cochrane database of systematic reviews · 2014
    Pooled it
  3. Trial
  4. Trial
  5. Article
  6. Review
  7. Article
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  9. Article
  10. Observational
  11. Review
  12. Observational
  13. Article
  14. Article
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  16. Scientific opinion on the tolerable upper intake level for selenium.EFSA journal. European Food Safety Authority · 2023
    Article
  17. Review
  18. Selenium status and type 2 diabetes risk.Archives of biochemistry and biophysics · 2022
    Review
  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

2 authors at 1 institution in 1 country.

John Steven MorrisResearch Reactor Center, University of Missouri, Columbia, MO 65211, USA. morrisj@missouri.edu
Stacy B Crane
University of Missouri · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Use of dietary supplements in the U.S. has increased steadily over the last 25 years. While misformulation is uncommon, the consequences can be serious. A March 2008 voluntary market recall removed supplement products responsible for the most serious selenium toxicity outbreak that has occurred in the U.S. We quantified selenium concentrations in the misformulated supplement products, measured the temporal response in the nail biologic monitor, and associated exposure to self-reported selenosis symptoms. Subjects recruited through state health departments and referrals provided samples of the misformulated supplement products, exposure information, monthly toenail and or fingernail clippings or onycholysitic nail fragments, and listed their newly onset adverse health effects attributed to selenium toxicity. Ninety-seven subjects enrolled and submitted at least one test sample. Peak selenium concentrations (up to 18.3 and 44.1 μg/g for toenails and fingernails, respectively) were measured. Multiple samples (52 total) of all six recalled supplement lots were analyzed ranging from 22,300 to 32,200 μg selenium per daily dose. Average consumption was 30.9 ± 13.9 doses; 73 subjects provided follow-up data on selenosis symptoms at 2.50 ± 0.14 years. Nail samples accurately reflect exposure in this selenium toxicity outbreak, which resulted in long-term/permanent adverse health effects.

Indexed as

Adverse Drug Reaction Reporting SystemsAdultAgedAged, 80 and overAnalysis of VarianceBiomarkersChemistry, PharmaceuticalDietary SupplementsFemaleHumansMaleMiddle AgedNailsNutrition PolicyPoisoningSafety-Based Drug WithdrawalsBiomarkersSelenium

Identifiers

PMID23538937
PMCPMC3705333
OpenAlexW2125345210

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.