PMID- 31376650 OWN - NLM STAT- MEDLINE DCOM- 20200415 LR - 20200415 IS - 1096-0953 (Electronic) IS - 0013-9351 (Linking) VI - 176 DP - 2019 Sep TI - Longitudinal study of age of menarche in association with childhood concentrations of persistent organic pollutants. PG - 108551 LID - S0013-9351(19)30348-2 [pii] LID - 10.1016/j.envres.2019.108551 [doi] AB - BACKGROUND: Age at female puberty is associated with adult morbidities, including breast cancer and diabetes. Hormonally active chemicals are suspected of altering pubertal timing. We examined whether persistent organic pollutants (POPs) are associated with age at menarche in a longitudinal study. METHODS: We analyzed data for females enrolled at age 6-8 years in the Breast Cancer and Environment Research Program from California and Ohio. Participants were followed annually 2004-2013 and provided serum (mean age 7.8 years) for measurement of polychlorinated biphenyl (PCB), organochlorine pesticide (OCP), and polybrominated diphenyl ether (PBDE) concentrations. Age of menarche was assigned based on parental and participant reported dates and ages of menarche. Adjusted hazard ratios (aHRs) for menarchal onset were calculated with Cox proportional regression. Body mass index (BMI), potentially on the causal pathway, was added to parallel analyses. RESULTS: Age of menarche was later with higher summed PCB levels (median 11.9 years in quartile 1 [Q1] versus 12.7 in quartile 4 [Q4]) and OCP levels (12.1 years versus 12.4, respectively). When adjusting for all covariates except BMI, higher POP concentrations were associated with later age at menarche (Q4 versus Q1 aHRs: PBDEs 0.75 [95% CI 0.58, 0.97], PCBs 0.67 [95% CI 0.5, 0.89], and OCPs 0.66 [95% CI 0.50, 0.89]). Additional adjustment for BMI attenuated aHRs; PCB aHR approached the null. CONCLUSION: Findings revealed later onset of menarche with higher concentrations of certain POPs, possibly through an association with BMI. Altered pubertal timing may have long lasting effects on reproductive health and disease risk, so continued attention is important for understanding the biological processes affected by hormonally active chemicals. CI - Copyright (c) 2019. Published by Elsevier Inc. FAU - Attfield, Kathleen R AU - Attfield KR AD - California Department of Public Health, Richmond, CA, USA; Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, GA, USA. Electronic address: Kathleen.Attfield@cdph.ca.gov. FAU - Pinney, Susan M AU - Pinney SM AD - University of Cincinnati College of Medicine, Cincinnati, OH, USA. FAU - Sjodin, Andreas AU - Sjodin A AD - Centers for Disease Control and Prevention, Atlanta, GA, USA. FAU - Voss, Robert W AU - Voss RW AD - California Department of Public Health, Richmond, CA, USA. FAU - Greenspan, Louise C AU - Greenspan LC AD - Kaiser Permanente, San Francisco, CA, USA. FAU - Biro, Frank M AU - Biro FM AD - University of Cincinnati College of Medicine, Cincinnati, OH, USA. FAU - Hiatt, Robert A AU - Hiatt RA AD - Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA. FAU - Kushi, Lawrence H AU - Kushi LH AD - Division of Research, Kaiser Permanente, Oakland, CA, USA. FAU - Windham, Gayle C AU - Windham GC AD - California Department of Public Health, Richmond, CA, USA. LA - eng PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20190621 PL - Netherlands TA - Environ Res JT - Environmental research JID - 0147621 RN - 0 (Environmental Pollutants) RN - 0 (Hydrocarbons, Chlorinated) RN - DFC2HB4I0K (Polychlorinated Biphenyls) SB - IM MH - Adult MH - California MH - Child MH - Environmental Exposure/*statistics & numerical data MH - *Environmental Pollutants MH - Female MH - Humans MH - *Hydrocarbons, Chlorinated MH - Longitudinal Studies MH - *Menarche MH - Ohio MH - *Polychlorinated Biphenyls OTO - NOTNLM OT - Menarche OT - PBDEs OT - PCBs OT - Persistent organic chemicals OT - Pesticides OT - Puberty EDAT- 2019/08/04 06:00 MHDA- 2020/04/16 06:00 CRDT- 2019/08/04 06:00 PHST- 2018/12/11 00:00 [received] PHST- 2019/06/18 00:00 [revised] PHST- 2019/06/18 00:00 [accepted] PHST- 2019/08/04 06:00 [pubmed] PHST- 2020/04/16 06:00 [medline] PHST- 2019/08/04 06:00 [entrez] AID - S0013-9351(19)30348-2 [pii] AID - 10.1016/j.envres.2019.108551 [doi] PST - ppublish SO - Environ Res. 2019 Sep;176:108551. doi: 10.1016/j.envres.2019.108551. Epub 2019 Jun 21.