Evidence map›Paper›PMID 41013526›Full record

ArticleEnvironmental health : a global access science source2025

Prospective study of oil spill cleanup-related exposure to volatile organic compounds and glycemic dysregulation.

Hanna V Jardel, Alex P Keil, Chantel L Martin, David B Richardson, Mark R Stenzel, Patricia A Stewart, Kate E Christenbury, Dale P Sandler, Lawrence S Engel

Abstract read
In one paragraph

Article in Environmental health : a global access science source, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
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0citing papers in PubMed
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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

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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

9 authors.

Hanna V JardelDepartment of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. jahan1@ad.unc.edu.
Alex P KeilOccupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA.
Chantel L MartinDepartment of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
David B RichardsonDepartment of Environmental and Occupational Health, Joe C. Wen School of Population & Public Health, University of California, Irvine, CA, USA.
Mark R StenzelExposure Assessment Applications, LLC, Arlington, VA, USA.
Patricia A StewartStewart Exposure Assessments, LLC, Arlington, VA, USA.
Kate E ChristenburyDLH, LLC, Bethesda, MD, USA.
Dale P SandlerEpidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA. sandler@niehs.nih.gov.
Lawrence S EngelDepartment of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

Funding

Gulf Longitudinal Follow-up (GuLF) Worker StudyZIAES102945 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI SANDLER, DALE P · 2010 to 2025
$15.3M
Intramural NIH HHS ZIA ES102945National Institute of Occupational Safety and Health, United States T42-OH008673NIEHS NIH HHS ZIA ES 102945NIOSH CDC HHS T42 OH008673
6 · The paper itself

Abstract

backgroundExposures to volatile organic compounds could influence glycemic regulation. This study examines hemoglobin A1c (HbA1c) in a cohort of oil spill cleanup workers up to 6 years post-exposure in relation to benzene, toluene, ethylbenzene, and xylenes (BTEX) exposures, individually and as a mixture, as well as a separate estimation of the aggregate sum of BTEX (total BTEX).

methodsData for this analysis are from the Gulf Long-term Follow-up (GuLF) Study– a prospective cohort of workers involved in the 2010 Deepwater Horizon oil spill cleanup. HbA1c and medication information were obtained at Home Visit and Clinical Exam phases 1–3 years and up to 6 years post-exposure, respectively. Cumulative inhalation exposure to the individual BTEX chemicals and to total BTEX were estimated using a job-exposure matrix linking air measurements to detailed individual worker cleanup work histories. We used Tobit regression models to examine associations between exposure to the chemicals and latent, untreated HbA1c, accounting for medication-reduced HbA1c. We used quantile g-computation to examine exposure to the mixture of BTEX chemicals and HbA1c.

resultsIn results examining Home Visit HbA1c we observed no discernable patterns but found suggestive evidence of an association with total BTEX. In results for Clinical Exam HbA1c, we did not observe monotonic patterns, but rather an inverted-U pattern with elevations in Q2 or Q3 or no clear pattern. Similarly, in results for final HbA1c adjusting for initial HbA1c, total BTEX difference estimates showed an inverted-U pattern in point estimates across Q2 (0.24 95%CI (0.14, 0.34)), Q3 (0.13 95%CI (0.03, 0.24)), and Q4 (0.00 95% CI (-0.11, 0.10)), compared to Q1.

conclusionExposures to the moderate levels of the BTEX chemicals observed in this study population, individually and as an aggregate, may be associated with elevated HbA1c up to 6 years after exposure, with an inverted-U pattern.

Indexed as

Glycated HemoglobinOccupational ExposurePetroleum PollutionVolatile Organic CompoundsBenzeneBenzene DerivativesEnvironmental Restoration and RemediationGulf of AmericaHumansInhalation ExposureMaleProspective StudiesTolueneXylenesBenzeneBenzene DerivativesethylbenzeneGlycated Hemoglobinhemoglobin A1c protein, humanTolueneVolatile Organic CompoundsXylenesBTEXDiabetesHbA1cMixtureOil spill cleanupQuantile g-computation

Identifiers

PMID41013526
PMCPMC12465997

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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.