Pubertal progression in relation to peripubertal exposure to organochlorine chemicals in a cohort of Russian boys.

Autor: Plaku B; Department of Environmental Health, Harvard T. H. Chan School of Public Health, 677 Huntington Ave, Boston, MA 02115 (Present address: Optum Inc, Eden Prairie, MN 55344)., Williams PL; Department of Biostatistics, Harvard T. H. Chan School of Public Health, 655 Huntington Ave, Boston, MA 02115., Sergeyev O; Belozersky Research Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119234 Moscow, Russia., Korrick SA; Department of Environmental Health, Harvard T. H. Chan School of Public Health; 677 Huntington Ave, Boston, MA 02115; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115., Burns JS; Department of Environmental Health, Harvard T. H. Chan School of Public Health; 677 Huntington Ave, Boston, MA 02115., Bather JR; Department of Biostatistics, Harvard T. H. Chan School of Public Health, 655 Huntington Ave, Boston, MA 02115., Hauser R; Departments of Environmental Health and Epidemiology, Harvard T. H. Chan School of Public Health, 677 Huntington Ave, Boston, MA 02115., Lee MM; Nemours Children's Health, 1600 Rockland Rd, Wilmington, DE 19803; Sidney Kimmel Medical College/Jefferson University, 1025 Walnut St, Philadelphia, PA 19107.
Jazyk: angličtina
Zdroj: International journal of hygiene and environmental health [Int J Hyg Environ Health] 2023 Sep; Vol. 254. Date of Electronic Publication: 2022 Dec 13.
DOI: 10.1016/j.ijheh.2022.114096
Abstrakt: Background: Peripubertal concentrations of serum dioxins and polychlorinated biphenyls (PCBs) have demonstrated associations with altered age of pubertal onset and sexual maturity in boys, but associations with pubertal progression have received less attention.
Methods: The Russian Children's Study is a prospective cohort of 516 boys enrolled in 2003-2005 at age 8 or 9 and followed annually up to 19 years of age. Serum concentrations of dioxin-like toxic equivalents (TEQs), polychlorinated dibenzodioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and non-dioxin-like PCBs (NDL-PCBs) and whole blood lead levels (BLLs) were quantified from blood samples collected at study entry (age 8-9). Testicular volume (TV) was assessed annually using a Prader orchidometer. Pubertal trajectories were identified by applying Group-Based Trajectory Models (GBTMs) to TV measured from ages 8-19. Associations of peripubertal serum TEQs, PCDDs, PCDFs, and NDL-PCBs with specific progression trajectories were modeled using multinomial logistic regression, adjusting for each boy's birthweight, and for BLL, body mass index and nutritional factors at study entry.
Results: Among 489 eligible boys with available exposure measures, we identified three pubertal trajectories using GBTMs: slower (34% of boys), moderate (48%) and faster (18%). Boys with higher peripubertal serum TEQs had higher adjusted odds of being in the moderate versus faster trajectory (adjusted odds ratio (aOR) 1.79, 95% CI 1.01, 3.13) and the slower versus faster trajectory (aOR 1.52, 95% CI 0.82, 2.78) per 1 log unit increase in serum TEQs. Boys with higher peripubertal serum PCDFs had higher adjusted odds of being in the moderate compared to the faster trajectory (aOR 1.92, 95% CI 1.20, 3.03) and of being in the slower versus the faster trajectory (aOR 1.42, 95% CI 0.91, 2.33) per 1 log unit increase. Boys with higher NDL-PCBs had higher adjusted odds of being in the faster trajectory versus the moderate (aOR 2.56, 95% CI 0.91-7.20) or slower (aOR 3.31, 95% CI 1.07, 10.25) trajectory. Boys with higher blood lead levels also had higher adjusted odds of being in the slower trajectory of pubertal progression, compared to either the faster (aOR 1.47, 95% CI 0.89, 2.44) or moderate (aOR 1.20, 95% CI 0.83, 1.75) trajectories, per 1 log unit increase in BLL, although these associations did not attain statistical significance.
Conclusion: Boys' peripubertal exposure to dioxins and certain PCBs may alter pubertal progression.
Competing Interests: Conflicts of Interest: None
Databáze: MEDLINE
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