Ontology highlight
ABSTRACT: Background
In animal studies, organochlorine pesticide (OCP) exposure alters pubertal development; however, epidemiological data are limited and inconsistent.Objective
To evaluate the associations of serum OCP concentrations [hexachlorobenzene (HCB), β-hexachlorocyclohexane (β-HCH), and p,p'-dichlorodiphenyldichloroethylene (p,p'-DDE)] with male pubertal onset.Methods
In Chapaevsk, Russia, a town environmentally contaminated with OCPs, 350 8-9 year old boys with measured OCPs were enrolled during 2003-2005 and were followed annually for eight years. We evaluated three measures of pubertal onset: testicular volume (TV)>3 mL in either testis, or stage 2 or greater for genitalia (G2+), or pubic hair (P2+). We used multivariable interval-censored models to evaluate associations of OCPs (quartiles) with physician-assessed pubertal onset.Results
In adjusted models, boys with higher HCB concentrations had later mean ages of TV>3 mL and P2+ (but not G2+). Mean age at attaining TV>3 mL was delayed 3.6 (95% CI: -2.6, 9.7), 7.9 (95% CI: 1.7, 14.0), and 4.7 months (95% CI: -1.4, 10.9) for HCB Q2, Q3, and Q4, respectively, compared to Q1 (trend p: 0.06). Boys with higher HCB concentrations reached P2+ 0.1 months earlier (95% CI: -5.8, 5.6) for Q2, 4.7 months later (95% CI: -1.0, 10.3) for Q3 and 4.6 months later (95% CI: -1.1, 10.3) for Q4 compared to Q1 (trend p: 0.04). There were no associations of serum β-HCH and p,p'-DDE concentrations with age of pubertal onset.Conclusion
Higher prepubertal serum HCB concentrations were associated with later age of gonadarche and pubarche.
SUBMITTER: Lam T
PROVIDER: S-EPMC4194160 | biostudies-literature | 2014 Dec
REPOSITORIES: biostudies-literature
Lam Thuy T Williams Paige L PL Lee Mary M MM Korrick Susan A SA Birnbaum Linda S LS Burns Jane S JS Sergeyev Oleg O Revich Boris B Altshul Larisa M LM Patterson Donald G DG Turner Wayman E WE Hauser Russ R
Environment international 20140810
<h4>Background</h4>In animal studies, organochlorine pesticide (OCP) exposure alters pubertal development; however, epidemiological data are limited and inconsistent.<h4>Objective</h4>To evaluate the associations of serum OCP concentrations [hexachlorobenzene (HCB), β-hexachlorocyclohexane (β-HCH), and p,p'-dichlorodiphenyldichloroethylene (p,p'-DDE)] with male pubertal onset.<h4>Methods</h4>In Chapaevsk, Russia, a town environmentally contaminated with OCPs, 350 8-9 year old boys with measured ...[more]