Evidence map›Paper›PMID 34662575›Full record

ArticleEnvironmental research2022

Plasma concentrations of perfluoroalkyl substances and risk of inflammatory bowel diseases in women: A nested case control analysis in the Nurses' Health Study cohorts.

Paul Lochhead, Hamed Khalili, Ashwin N Ananthakrishnan, Kristin E Burke, James M Richter, Qi Sun, Philippe Grandjean, Andrew T Chan

Open access · greenAbstract read
In one paragraph

Article in Environmental research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
1.5field-weighted citation impact, top 20% 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

13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 23 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Modern sources of controls in case-control studies.American journal of epidemiology · 2025
    Article
  5. Article
  6. Review
  7. Review
  8. Review
  9. Deciphering the different phases of preclinical inflammatory bowel disease.Nature reviews. Gastroenterology & hepatology · 2024
    Review
  10. Consideration of pathways for immunotoxicity of per- and polyfluoroalkyl substances (PFAS).Environmental health : a global access science source · 2023
    Review
  11. Review
  12. Review
  13. Multiomics to elucidate inflammatory bowel disease risk factors and pathways.Nature reviews. Gastroenterology & hepatology · 2022
    Review
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

8 authors at 4 institutions in 2 countries.

Paul LochheadClinical and Translational Epidemiology Unit, Massachusetts Hospital and Harvard Medical School, Boston, MA, USA; Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.
Hamed KhaliliClinical and Translational Epidemiology Unit, Massachusetts Hospital and Harvard Medical School, Boston, MA, USA; Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.
Ashwin N AnanthakrishnanClinical and Translational Epidemiology Unit, Massachusetts Hospital and Harvard Medical School, Boston, MA, USA; Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.
Kristin E BurkeClinical and Translational Epidemiology Unit, Massachusetts Hospital and Harvard Medical School, Boston, MA, USA; Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.
James M RichterDivision of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.
Qi SunDepartment of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
Philippe GrandjeanInstitute of Public Health, University of Southern Denmark, Odense, Denmark; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
Andrew T ChanClinical and Translational Epidemiology Unit, Massachusetts Hospital and Harvard Medical School, Boston, MA, USA; Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA. Electronic address: achan@mgh.harvard.edu.
Harvard University · USBrigham and Women's Hospital · USMassachusetts General Hospital · USUniversity of Southern Denmark · DK

Funding

Life Course Cancer Epidemiology Cohort in WomenU01CA176726 · NCI · HARVARD UNIVERSITY D/B/A HARVARD SCHOOL OF PUBLIC HEALTH · PI ELIASSEN, A. HEATHER, WILLETT, WALTER C. · 2018 to 2025
$22.4M
Long Term Multidisciplinary Study of Cancer in Women: The Nurses Health StudyUM1CA186107 · NCI · BRIGHAM AND WOMEN'S HOSPITAL · PI ELIASSEN, A. HEATHER, STAMPFER, MEIR · 2014 to 2023
$22.3M
Sources, Transport, Exposure & Effects of PFAS (STEEP) Center - RENEWALP42ES027706 · NIEHS · UNIVERSITY OF RHODE ISLAND · PI Harrison Dekker · 2017 to 2026
$18.9M
Premonopausal Hormone Levels and Risk of Breast CancerR01CA067262 · NCI · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI HANKINSON, SUSAN E · 2002 to 2011
$11.9M
BIOCHEMICAL MARKERS IN THE NURSES'HEALTH STUDY COHORTR01CA049449 · NCI · BRIGHAM AND WOMEN'S HOSPITAL · PI HANKINSON, SUSAN E · 1989 to 2008
$11.3M
NCI NIH HHS R01 CA049449NCI NIH HHS R01 CA067262NCI NIH HHS U01 CA176726NCI NIH HHS UM1 CA186107NIEHS NIH HHS P42 ES027706
6 · The paper itself

Abstract

backgroundPerfluoroalkyl substances (PFASs) are synthetic compounds used in a wide variety of industrial and consumer applications. An association between PFAS exposure and risk of ulcerative colitis (UC) has been reported in a highly exposed population. However, data are limited on risk of inflammatory bowel diseases (IBD) among individuals with background population levels of PFAS exposure.

objectivesWe set out to examine the association between plasma PFAS concentrations and risk of IBD among women in two population-based, prospective cohort studies in which pre-diagnostic blood specimens were available.

methodsWe conducted a nested case-control study in the Nurses' Health Study and Nurses' Health Study II cohorts. We identified 73 participants with incident Crohn's disease (CD) and 80 participants with incident UC who had provided blood samples before diagnosis. Cases were matched 1:2 to IBD-free controls. Plasma concentrations of five major PFASs were measured by liquid chromatography and tandem mass spectrometry. We used conditional logistic models to estimated odds ratios for risk of IBD according to log

resultsIn multivariable models, we observed inverse associations between plasma concentrations of three PFASs and risk of CD (all P ≤ 0.012 for a standard deviation increase in log DISCUSSION: Our results do not support the hypothesis that elevated PFAS exposure is associated with higher risk of UC. Contrary to expectation, our data suggest that circulating concentrations of some PFASs may be inversely associated with CD development.

Indexed as

FluorocarbonsInflammatory Bowel DiseasesNursesCase-Control StudiesFemaleHumansProspective StudiesFluorocarbonsCohort studyCrohn's diseaseEpidemiologyPlasmaPollutionUlcerative colitis

Identifiers

PMID34662575
PMCPMC9960490
OpenAlexW3205111497

What OpenQuestion holds

Textmetadata
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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.