Evidence map›Paper›PMID 25960783›Full record

ArticleClinical epigenetics2015

Effects of phthalate exposure on asthma may be mediated through alterations in DNA methylation.

I-Jen Wang, Wilfried Jj Karmaus, Su-Lien Chen, John W Holloway, Susan Ewart

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Clinical epigenetics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05024227 (Discussion on the Effect of Nursing Education Intervention on Women's Health Literacy of Plasticizers), which is not on this map. Cited by 36 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 2 pooled it
6.6field-weighted citation impact, top 3% 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.

NCT05024227 naunknown statusnot on this mapstarted 2021, after this paper: background citation

Discussion on the Effect of Nursing Education Intervention on Women's Health Literacy of Plasticizers

TypeinterventionalSponsorNational Taipei University of Nursing and Health SciencesRan2021 to 2022Enrolled100ConditionsEndocrine Disrupting Chemicals, Health LiteracyArmsExperimental: nursing education interventions (including e-health platform assistance)
3 · Its place in the literature

Who cites it

36 citing papers in PubMed, 2 syntheses or guidelines pooled it, 95 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
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  7. Review
  8. Effects ofNutrients · 2024
    Article
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  14. The Association between ADHD and Environmental Chemicals-A Scoping Review.International journal of environmental research and public health · 2022
    Article
  15. Review
  16. Article
  17. Article
  18. Review
  19. Review
  20. Bisphenol a Exposure, DNA Methylation, and Asthma in Children.International journal of environmental research and public health · 2020
    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

5 authors at 5 institutions in 3 countries.

I-Jen WangDepartment of Pediatrics, Taipei Hospital, Ministry of Health and Welfare, #127, Su-Yuan Road, Hsin-Chuang Dist 242 New Taipei City, Taiwan ; Institute of Environmental and Occupational Health Sciences, College of Medicine, National Yang-Ming University, Taipei, 112 Taiwan ; Department of Health Risk Management, China Medical University, Taichung, 404 Taiwan.
Wilfried Jj KarmausDivision of Epidemiology, Biostatistics, and Environmental Health, School of Public Health, University of Memphis, Memphis, 38152 USA.
Su-Lien ChenGenomics, BioSci & Tech, Taipei, 221 Taiwan.
John W HollowayClinical and Experimental Sciences, Faculty of Medicine, and NIHR Respiratory Biomedical Research Unit, University of Southampton, Southampton, S016 6YD UK ; Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD UK.
Susan EwartDepartment of Large Animal Clinical Sciences, Michigan State University, East Lansing, 48824 MI USA.
Genomics Research Center, Academia Sinica · TWMichigan State University · USMinistry of Health and Welfare · TWUniversity of Memphis · USUniversity of Southampton · GB

Funding

Transgenerational epigenetic inheritance of allergy in a multigenerational cohortR01AI091905 · NIAID · UNIVERSITY OF SOUTH CAROLINA AT COLUMBIA · PI KARMAUS, WILFRIED JJ · 2011 to 2015
$2.7M
Genetic &epidemiologic cohort study of asthma &allergyR01AI061471 · NIAID · MICHIGAN STATE UNIVERSITY · PI EWART, SUSAN L · 2005 to 2009
$1.8M
Epidemiology of asthma: risk and prognosis in a cohort from birth to adolescenceR01HL082925 · NHLBI · ST. MARY'S HOSPITAL NEWPORT · PI ARSHAD, SYED HASAN · 2007 to 2010
$1.7M
Medical Research Council G0400473Medical Research Council G0800766Medical Research Council G0900453NHLBI NIH HHS R01 HL082925NIAID NIH HHS R01 AI061471NIAID NIH HHS R01 AI091905
6 · The paper itself

Abstract

backgroundPhthalates may increase the asthma risk in children. Mechanisms underlying this association remain to be addressed. This study assesses the effect of phthalate exposures on epigenetic changes and the role of epigenetic changes for asthma. In the first step, urine and blood samples from 256 children of the Childhood Environment and Allergic diseases Study (CEAS) were analyzed. Urine 5OH-MEHP levels were quantified as an indicator of exposure, and asthma information was collected. DNA methylation (DNA-M) was measured by quantitative PCR. In the screening part of step 1, DNA-M of 21 potential human candidate genes suggested by a toxicogenomic data were investigated in 22 blood samples. Then, in the testing part of step 1, positively screened genes were tested in a larger sample of 256 children and then validated by protein measurements. In step 2, we replicated the association between phthalate exposure and gene-specific DNA-M in 54 children in the phthalate contaminated food event. In step 3, the risk of DNA-M for asthma was tested in 256 children from CEAS and corroborated in 270 children from the Isle of Wight (IOW) birth cohort.

resultsDifferential methylation in three genes (AR, TNFα, and IL-4) was identified through screening. Testing in 256 children showed that methylation of the TNFα gene promoter was lower when children had higher urine 5OH-MEHP values (β = -0.138, P = 0.040). Functional validation revealed that TNFα methylation was inversely correlated with TNFα protein levels (β = -0.18, P = 0.041). In an additional sample of 54 children, we corroborated that methylation of the TNFα gene promoter was lower when urine 5OH-MEHP concentrations were higher. Finally, we found that a lower methylation of 5'CGI region of TNFα was associated with asthma in 256 CEAS children (OR = 2.15, 95% CI = 1.01 to 4.62). We replicated this in 270 children from the IOW birth cohort study. Methylation of the CpG site cg10717214 was negatively associated with asthma, when children had 'AA' or 'AG' genotype of the TNFα single nucleotide rs1800610.

conclusionsEffects of phthalate exposure on asthma may be mediated through alterations in DNA methylation.

Indexed as

AsthmaDEHP exposureDNA methylationQuantitative PCRTNFα

Identifiers

PMID25960783
PMCPMC4424541
OpenAlexW2134757331

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Registered trials

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.