Evidence map›Paper›PMID 21620887›Full record

ArticleNeurotoxicology2011

β-Hexachlorocyclohexane levels in serum and risk of Parkinson's disease.

Jason R Richardson, Ananya Roy, Stuart L Shalat, Brian Buckley, Bozena Winnik, Marla Gearing, Allan I Levey, Stewart A Factor, Padraig O'Suilleabhain, Dwight C German

Open access · greenAbstract readMulticenter Study
In one paragraph

Article in Neurotoxicology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

22 citing papers in PubMed, 56 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Association of brain heptachlor epoxide and other organochlorine compounds with lewy pathology.Movement disorders : official journal of the Movement Disorder Society · 2019
    Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Environmental Exposures and Parkinson's Disease.International journal of environmental research and public health · 2016
    Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
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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

10 authors at 5 institutions in 1 country.

Jason R RichardsonDepartment of Environmental and Occupational Medicine, UMDNJ-Robert Wood Johnson Medical School, Piscataway, NJ 08854, United States. jricha3@eohsi.rutgers.edu
Ananya Roy
Stuart L Shalat
Brian Buckley
Bozena Winnik
Marla Gearing
Allan I Levey
Stewart A Factor
Padraig O'Suilleabhain
Dwight C German
Emory University · USJohnson University · USRutgers, The State University of New Jersey · USThe University of Texas Southwestern Medical Center · USEnvironmental and Occupational Health Sciences Institute · US

Funding

Translational Research Support CoreP30ES005022 · NIEHS · UNIV OF MED/DENT NJ-R W JOHNSON MED SCH · PI ROBERT John LAUMBACH · 1988 to 2026
$47.4M
Atlanta Clinical and Translational Science Institute (ACTSI) RenewalUL1TR000454 · NCATS · EMORY UNIVERSITY · PI STEPHENS, DAVID S · 2012 to 2016
$25.8M
The Emory Alzheimer's Disease CenterP50AG025688 · NIA · EMORY UNIVERSITY · PI LEVEY, ALLAN I · 2005 to 2019
$25.7M
Graduate and Postdoctoral Training in ToxicologyT32ES012870 · NIEHS · EMORY UNIVERSITY · PI Carmen Joseph Marsit · 2004 to 2026
$9.1M
PROJECT 3: METABOLOMIC BIOMARKERS OF PARKINSON'S DISEASEP01ES016731 · NIEHS · EMORY UNIVERSITY · PI MILLER, GARY W · 2008 to 2012
$6.7M
NCATS NIH HHS UL1 TR000454NIA NIH HHS P50 AG025688NIA NIH HHS P50AG025688NIEHS NIH HHS P01 ES016731NIEHS NIH HHS P01ES016731NIEHS NIH HHS P30 ES005022NIEHS NIH HHS P30ES005022NIEHS NIH HHS T32 ES012870
6 · The paper itself

Abstract

Pesticide exposure has been implicated as an environmental risk factor for the development of Parkinson's disease (PD). However, few studies have identified specific pesticides. Previously, we identified elevated serum levels of the organochlorine pesticide β-hexachlorocyclohexane (β-HCH) in PD patients from a small clinical sample. Here, we conducted a case-control study to confirm the association between β-HCH and PD in a larger sample size (n=283) with serum samples of PD patients and controls obtained from UT Southwestern Medical Center and Emory University. Samples were obtained from two discrete periods at both sites, 2001-2003 and 2006-2008, and were analyzed for β-HCH levels. Adjusted odds ratios (ORs) for PD were estimated using logistic regression and generalized estimating equations. The mean serum β-HCH level across all cohorts in this study was 22.3 ng/mg cholesterol (range: 0-376.7), and the levels were significantly higher and samples collected in 2001-2003 vs. 2006-2008. After controlling for age and gender, the OR for increased risk of PD for every 1 ng/mg increase in serum β-HCH ranged from 1.02 to 1.12 across the four different cohorts, and 1.03 (95% CI: 1.00-1.07, p value=0.031) in the pooled analysis. Furthermore, the OR for increased risk of PD of subjects having serum β-HCH levels above the inter-quartile range of 39.08 ng/mg cholesterol was 2.85 (95% CI: 1.8, 4.48; p value<0.001). These data are consistent with environmental decreases in β-HCH levels between 2001 and 2008, but they indicate that elevated levels of serum β-HCH are still associated with heightened risk for PD.

Indexed as

AgedBiomarkersCase-Control StudiesEnvironmental ExposureFemaleFollow-Up StudiesHexachlorocyclohexaneHumansMaleParkinson DiseaseRisk Factorsbeta-hexachlorocyclohexaneBiomarkersHexachlorocyclohexane

Identifiers

PMID21620887
PMCPMC3176949
OpenAlexW2065236588

What OpenQuestion holds

Textmetadata
LicenceTDM
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.