Evidence map›Paper›PMID 24479647›Full record

ArticleParticle and fibre toxicology2014

Genotoxicity of multi-walled carbon nanotubes at occupationally relevant doses.

Katelyn J Siegrist, Steven H Reynolds, Michael L Kashon, David T Lowry, Chenbo Dong, Ann F Hubbs, Shih-Houng Young, Jeffrey L Salisbury, Dale W Porter, Stanley A Benkovic and 9 more

Open access · goldAbstract read
In one paragraph

Article in Particle and fibre toxicology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed
11.3field-weighted citation impact, top 1% 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

62 citing papers in PubMed, 151 citations in OpenAlex.

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2 more citing papers are in PubMed but not listed here.

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

19 authors at 4 institutions in 1 country.

Katelyn J Siegrist
Steven H Reynolds
Michael L Kashon
David T Lowry
Chenbo Dong
Ann F Hubbs
Shih-Houng Young
Jeffrey L Salisbury
Dale W Porter
Stanley A Benkovic
Michael McCawley
Michael J Keane
John T Mastovich
Kristin L Bunker
Lorenzo G Cena
Mark C Sparrow
Jacqueline L Sturgeon
Cerasela Zoica DinuNational Institute for Occupational Safety and Health, Morgantown, WV 26505, USA. cerasela-zoica.dinu@mail.wvu.edu.
Linda M Sargent
National Institute for Occupational Safety and Health · USRJ Lee Group (United States) · USWest Virginia University · USMayo Clinic · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Carbon nanotubes are commercially-important products of nanotechnology; however, their low density and small size makes carbon nanotube respiratory exposures likely during their production or processing. We have previously shown mitotic spindle aberrations in cultured primary and immortalized human airway epithelial cells exposed to single-walled carbon nanotubes (SWCNT). In this study, we examined whether multi-walled carbon nanotubes (MWCNT) cause mitotic spindle damage in cultured cells at doses equivalent to 34 years of exposure at the NIOSH Recommended Exposure Limit (REL). MWCNT induced a dose responsive increase in disrupted centrosomes, abnormal mitotic spindles and aneuploid chromosome number 24 hours after exposure to 0.024, 0.24, 2.4 and 24 μg/cm² MWCNT. Monopolar mitotic spindles comprised 95% of disrupted mitoses. Three-dimensional reconstructions of 0.1 μm optical sections showed carbon nanotubes integrated with microtubules, DNA and within the centrosome structure. Cell cycle analysis demonstrated a greater number of cells in S-phase and fewer cells in the G2 phase in MWCNT-treated compared to diluent control, indicating a G1/S block in the cell cycle. The monopolar phenotype of the disrupted mitotic spindles and the G1/S block in the cell cycle is in sharp contrast to the multi-polar spindle and G2 block in the cell cycle previously observed following exposure to SWCNT. One month following exposure to MWCNT there was a dramatic increase in both size and number of colonies compared to diluent control cultures, indicating a potential to pass the genetic damage to daughter cells. Our results demonstrate significant disruption of the mitotic spindle by MWCNT at occupationally relevant exposure levels.

Indexed as

MutagensOccupational ExposureApoptosisCell CycleCells, CulturedCell SurvivalChromosomesDNA DamageEnvironmental MonitoringEpithelial CellsFlow CytometryHumansIn Situ Hybridization, FluorescenceMicroscopy, Atomic ForceMitosisNanotubes, CarbonMutagensNanotubes, Carbon

Identifiers

PMID24479647
PMCPMC3923549
OpenAlexW1998498425

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.