Evidence map›Paper›PMID 20418200›Full record

ArticleEnvironmental health perspectives2010

Benzene exposure near the U.S. permissible limit is associated with sperm aneuploidy.

Caihong Xing, Francesco Marchetti, Guilan Li, Rosana H Weldon, Elaine Kurtovich, Suzanne Young, Thomas E Schmid, Luoping Zhang, Stephen Rappaport, Suramya Waidyanatha and 2 more

Open access · diamondAbstract read
In one paragraph

Article in Environmental health perspectives, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 pooled it
2.0field-weighted citation impact, top 13% 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

14 citing papers in PubMed, 2 syntheses or guidelines pooled it, 54 citations in OpenAlex.

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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

12 authors at 4 institutions in 2 countries.

Caihong XingLife Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA.
Francesco Marchetti
Guilan Li
Rosana H Weldon
Elaine Kurtovich
Suzanne Young
Thomas E Schmid
Luoping Zhang
Stephen Rappaport
Suramya Waidyanatha
Andrew J Wyrobek
Brenda Eskenazi
University of California, Berkeley · USLawrence Berkeley National Laboratory · USNational Institute for Occupational Health and Poison Control · CNUniversity of North Carolina at Chapel Hill · US

Funding

Training CoreP42ES004705 · NIEHS · UNIVERSITY OF CALIFORNIA BERKELEY · PI MORELLO-FROSCH, RACHEL ADELE · 1987 to 2025
$74.6M
Genetic damage in the sperm and blood of workers exposed to benzeneR03ES015340 · NIEHS · UNIVERSITY OF CALIFORNIA BERKELEY · PI ESKENAZI, BRENDA · 2007 to 2008
$119k
NIEHS NIH HHS P42 ES004705NIEHS NIH HHS P42 ES04705NIEHS NIH HHS R03 ES015340NIEHS NIH HHS R03ES015340-02
6 · The paper itself

Abstract

backgroundBenzene is a common industrial chemical known to induce leukemia and other blood disorders, as well as aneuploidy, in both human blood cells and sperm at exposures > 10 ppm. Recent reports have identified health effects at exposure levels < 1 ppm, the permissible exposure limit (PEL; 8 hr) set by the U.S. Occupational Safety and Health Administration.

objectiveWe investigated whether occupational exposures to benzene near 1 ppm induce aneuploidy in sperm.

methodsWe used multicolor fluorescence in situ hybridization to measure the incidence of sperm with numerical abnormalities of chromosomes X, Y, and 21 among 33 benzene-exposed men and 33 unexposed men from Chinese factories. Individual exposures were assessed using personal air monitoring and urinary concentrations of benzene and trans,trans-muconic acid (E,E-MA). Air benzene concentrations were not detectable in unexposed men; in exposed men, concentrations ranged from below the detection limit to 24 ppm (median, 2.9 ppm), with 27% of exposed men (n = 9) having concentrations of <or= 1 ppm. Exposed men were categorized into low and high groups based on urinary E,E-MA (median concentrations of 1.9 and 14.4 mg/L, respectively; median air benzene of 1 and 7.7 ppm, respectively), and aneuploidy frequencies were compared with those of unexposed men.

resultsSperm aneuploidy increased across low- and high-exposed groups for disomy X [incidence rate ratio (IRR) = 2.0; 95% confidence interval (CI), 1.1-3.4; and IRR = 2.8; 95% CI, 1.5-4.9, respectively], and for overall hyperhaploidy for the three chromosomes investigated (IRR = 1.6; 95% CI, 1.0-2.4; and IRR = 2.3; 95% CI, 1.5-3.6, respectively). We also found elevated disomy X and hyperhaploidy in the nine men exposed to <or= 1 ppm benzene compared with unexposed men (IRR = 1.8; 95% CI, 1.1-3.0; and IRR = 2.0; 95% CI, 1.1-3.9, respectively).

conclusionsBenzene appeared to increase the frequencies of aneuploid sperm for chromosomes associated with chromosomal abnormality syndromes in human offspring, even in men whose air benzene exposure was at or below the U.S. permissible exposure limit.

Indexed as

AneuploidyBenzeneChinaChromosome AberrationsEnvironmental PollutantsHumansIn Situ Hybridization, FluorescenceMaleOccupational ExposureSorbic AcidSpermatozoaBenzeneEnvironmental Pollutantsmuconic acidSorbic Acid

Identifiers

PMID20418200
PMCPMC2898861
OpenAlexW2050911113

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Read underepoch 390

Registered trials

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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.