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Temporal Trends In Serum Concentrations Of Polychlorinated Dioxins, Furans, And Pcbs Among Adult Women Living In Chapaevsk, Russia: A Longitudinal Study From 2000 To 2009, Olivier Humblet, Oleg Sergeyev, Larisa Altshul, Susan A. Korrick, Paige L. Williams, Claude Emond, Linda S. Birnbaum, Jane S. Burns, Mary M. Lee, Boris Revich, Andrey Shelepchikov, Denis Feshin, Russ Hauser

Mary M. Lee

BACKGROUND: The present study assessed the temporal trend in serum concentrations of polychlorinated dibenzo-p-dioxins, dibenzofurans, and biphenyls (PCBs) among residents of a Russian town where levels of these chemicals are elevated due to prior industrial activity.

METHODS: Two serum samples were collected from eight adult women (in 2000 and 2009), and analyzed with gas chromatography-high-resolution mass spectrometry.

RESULTS: The average total toxic equivalency (TEQ) decreased by 30% (from 36 to 25 pg/g lipid), and the average sum of PCB congeners decreased by 19% (from 291 to 211 ng/g lipid). Total TEQs decreased for seven of the eight women, and the …

Serum Concentrations Of Organochlorine Pesticides And Growth Among Russian Boys, Jane S. Burns, Paige L. Williams, Oleg Sergeyev, Susan A. Korrick, Mary M. Lee, Boris Revich, Larisa Altshul, Julie T. Del Prato, Olivier Humblet, Donald G. Patterson, Wayman E. Turner, Mikhail Starovoytov, Russ Hauser

Mary M. Lee

Background: Limited human data suggest an association of organochlorine pesticides (OCPs) with adverse effects on children's growth.Objective: We evaluated the associations of OCPs with longitudinally assessed growth among peripubertal boys from a Russian cohort with high environmental OCP levels. Methods: A cohort of 499 boys enrolled in the Russian Children's Study between 2003 and 2005 at 8-9 years of age were followed prospectively for 4 years. At study entry, 350 boys had serum OCPs measured. Physical examinations were conducted at entry and annually. The longitudinal associations of serum OCPs with annual measurements of body mass index (BMI), height, and height …

Dioxin And Polychlorinated Biphenyl Concentrations In Mother's Serum And The Timing Of Pubertal Onset In Sons, Olivier Humblet, Paige Williams, Susan Korrick, Oleg Sergeyev, Claude Emond, Linda Birnbaum, Jane Burns, Larisa Altshul, Donald Patterson, Wayman Turner, Mary Lee, Boris Revich, Russ Hauser

Mary M. Lee

BACKGROUND: Animal studies have demonstrated that timing of pubertal onset can be altered by prenatal exposure to dioxins or polychlorinated biphenyls (PCBs), but studies of human populations have been quite limited.

METHODS: We assessed the association between maternal serum concentrations of dioxins and PCBs and the sons' age of pubertal onset in a prospective cohort of 489 mother-son pairs from Chapaevsk, Russia, a town contaminated with these chemicals during past industrial activity. The boys were recruited at ages 8 to 9 years, and 4 years of annual follow-up data were included in the analysis. Serum samples were collected at enrollment …

Genetic Modification Of The Association Between Peripubertal Dioxin Exposure And Pubertal Onset In A Cohort Of Russian Boys, Olivier Humblet, Susan A. Korrick, Paige L. Williams, Oleg Sergeyev, Claude Emond, Linda S. Birnbaum, Jane S. Burns, Larisa Altshul, Donald G. Patterson Jr., Wayman E. Turner, Mary M. Lee, Boris Revich, Russ Hauser

Mary M. Lee

BACKGROUND: Exposure to dioxins has been associated with delayed pubertal onset in both epidemiologic and animal studies. Whether genetic polymorphisms may modify this association is currently unknown. Identifying such genes could provide insight into mechanistic pathways. This is one of the first studies to assess genetic susceptibility to dioxins. OBJECTIVES: We evaluated whether common polymorphisms in genes affecting either molecular responses to dioxin exposure or pubertal onset influence the association between peripubertal serum dioxin concentration and male pubertal onset. METHODS: In this prospective cohort of Russian adolescent boys (n = 392), we assessed gene-environment interactions for 337 tagging single-nucleotide polymorphisms …