Evidence map›Paper›PMID 18249523›Full record

ArticleReproductive toxicology (Elmsford, N.Y.)2008

Circulating estradiol in men is inversely related to urinary metabolites of nonpersistent insecticides.

John D Meeker, Sarena R Ravi, Dana B Barr, Russ Hauser

Registry-linked trialOpen access · greenAbstract read
In one paragraph

Article in Reproductive toxicology (Elmsford, N.Y.), 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00011713 (Human Exposure to Bisphenol A, Phthalates and Fertility, Pregnancy Outcomes.), which is not on this map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.4field-weighted citation impact, top 22% 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.

NCT00011713 completednot on this map

Human Exposure to Bisphenol A, Phthalates and Fertility, Pregnancy Outcomes.

TypeobservationalSponsorNational Institute of Environmental Health Sciences (NIEHS)Ran1999 to 2020Enrolled1,474ConditionsInfertilityArmsCompletion questionnaires/providing biological samples
3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 50 citations in OpenAlex.

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  16. The effect of Carbaryl on the pituitary-gonad axis in male rats.Iranian journal of reproductive medicine · 2012
    Article
  17. 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

4 authors at 3 institutions in 1 country.

John D MeekerDepartment of Environmental Health Sciences, University of Michigan, School of Public Health, Ann Arbor, MI 48109, United States. meekerj@umich.edu
Sarena R Ravi
Dana B Barr
Russ Hauser
University of Michigan–Ann Arbor · USCenters for Disease Control and Prevention · USMassachusetts General Hospital · US

Funding

PCBs, Phthalates and Male Reproductive HealthR01ES009718 · NIEHS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI HAUSER, RUSS B · 1999 to 2018
$11.6M
NIEHS NIH HHS ES09718NIEHS NIH HHS R01 ES009718
6 · The paper itself

Abstract

backgroundEstradiol plays an important role in male reproductive health as a germ cell survival factor. Chlorpyrifos and carbaryl, nonpersistent insecticides to which the general population are commonly exposed, were recently shown to inhibit estradiol metabolism in vitro which could lead to altered hormone balance.

methodsSubjects (N=322) were the male partners in couples presenting to a Massachusetts infertility clinic from years 2000-2003. 3,5,6-Trichloro-2-pyridinol (TCPY), the major urinary metabolite of chlorpyrifos and chlorpyrifos-methyl, and 1- and 2-naphthol (1N and 2N), urinary metabolites of carbaryl and naphthalene, were measured in a spot urine sample from each subject. Estradiol, sex hormone binding globulin (SHBG), and prolactin were measured in serum collected from subjects during the same clinic visit.

resultsUsing multiple linear regression, an interquartile range (IQR) increase in TCPY was associated with a 1.36 pg/mL decline (95% confidence interval=-2.91 to -0.22) in estradiol concentration. When estradiol and TCPY were divided into quintiles, there was a dose-dependent increase in the odds of being in the lowest estradiol quintile with increasing TCPY quintiles.

conclusionOn a population level, these reductions in estradiol levels are of potential public health importance because of widespread exposure to TCPY and its parent insecticides.

Indexed as

CarbarylChlorpyrifosEstradiolHumansInsecticidesLinear ModelsMalePyridones3,5,6-trichloro-2-pyridinolCarbarylChlorpyrifosEstradiolInsecticidesPyridones

Identifiers

PMID18249523
PMCPMC2330088
OpenAlexW1965438132

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.