Evidence map›Paper›PMID 23334696›Full record

ArticleToxicologic pathology2013

Mechanistic insights from the NTP studies of chromium.

Kristine L Witt, Matthew D Stout, Ronald A Herbert, Gregory S Travlos, Grace E Kissling, Bradley J Collins, Michelle J Hooth

Open access · greenAbstract read
In one paragraph

Article in Toxicologic pathology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
4.3field-weighted citation impact, top 6% 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

11 citing papers in PubMed, 72 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Review
  6. A series of LnRSC advances · 2018
    Article
  7. Article
  8. Article
  9. Article
  10. Oral Chromium Exposure and Toxicity.Current environmental health reports · 2015
    Review
  11. Scientific Opinion on the safety and efficacy of vitamin KEFSA journal. European Food Safety Authority · 2014
    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 2 institutions in 1 country.

Kristine L WittDivision of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709, USA.
Matthew D Stout
Ronald A Herbert
Gregory S Travlos
Grace E Kissling
Bradley J Collins
Michelle J Hooth
National Institutes of Health · USNational Institute of Environmental Health Sciences · US

Funding

CMPB Pathology Support GroupZICES102505 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI HERBERT, RONALD · 2014 to 2021
$67.7M
NTP Database Summarization And EvaluationZIAES045004 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI KISSLING, GRACE E · 2009 to 2017
$1.2M
NTP DATABASE SUMMARIZATION AND EVALUATIONZ01ES045004 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI KISSLING, GRACE E · 1997 to 2008
$193k
FDA HHS Z01 ES045004-11 BBIntramural NIH HHS Z01 ES045004Intramural NIH HHS Z99 ES999999NIEHS NIH HHS N01 ES065554NIEHS NIH HHS ZO1 ES65554
6 · The paper itself

Abstract

Hexavalent chromium (Cr(VI)) is a contaminant of water and soil and is a human lung carcinogen. Trivalent chromium (Cr(III)), a proposed essential element, is ingested by humans in the diet and in dietary supplements such as chromium picolinate (CP). The National Toxicology Program (NTP) demonstrated that Cr(VI) is also carcinogenic in rodents when administered in drinking water as sodium dichromate dihydrate (SDD), inducing neoplasms of the oral cavity and small intestine in rats and mice, respectively. In contrast, there was no definitive evidence of toxicity or carcinogenicity following exposure to Cr(III) administered in feed as CP monohydrate (CPM). Cr(VI) readily enters cells via nonspecific anion channels, in contrast to Cr(III), which cannot easily pass through the cell membrane. Extracellular reduction of Cr(VI) to Cr(III), which occurs primarily in the stomach, is considered a mechanism of detoxification, while intracellular reduction is thought to be a mechanism of genotoxicity and carcinogenicity. Tissue distribution studies in additional groups of male rats and female mice demonstrated higher Cr concentrations in tissues following exposure to Cr(VI) compared to controls and Cr(III) exposure at a similar external dose, indicating that some of the Cr(VI) escaped gastric reduction and was distributed systemically. The multiple potential pathways of Cr-induced genotoxicity will be discussed.

Indexed as

AnimalsCarcinogenicity TestsChromiumDuodenumFemaleHistiocytesHyperplasiaLiverLymph NodesMaleMiceMouth MucosaMutagenicity TestsNeoplasmsRatsTissue DistributionChromiumchromium hexavalent ionWater Pollutants, Chemical

Identifiers

PMID23334696
PMCPMC12355899
OpenAlexW2116002655

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.