RT Journal Article T1 Pre- and postnatal exposure to secondhand tobacco smoke and cardiometabolic risk at 12 years: periods of susceptibility A1 Mouriño Castro, Nerea A1 Pérez Ríos, Mónica A1 Yolton, Kimberly A1 Lanphear, Bruce P. A1 Chen, Aimin A1 Buckley, Jessie P. A1 Kalkwarf, Heidi J. A1 Cecil, Kim M. A1 Braun, Joseph M. K1 Secondhand tobacco smoke K1 Cotinine K1 Adolescents K1 Cardiometabolic risk factors AB Background: To identify periods of heightened susceptibility to the association of secondhand tobacco smoke (SHS) exposure with cardiometabolic (CM) risk at age 12 years.Methods: We used data from 212 adolescents from the HOME Study, a prospective pregnancy and birth cohort in Cincinnati, OH. Using multiple informant models, we estimated associations of maternal serum cotinine (mean of concentrations at 16 and 26 weeks of pregnancy) and children's serum cotinine concentrations (mean of concentrations at ages 1, 2, 3, and 4 years) with a CM risk summary score constructed of five risk components measured at age 12 years. We determined if these associations differed for pre- and postnatal exposure periods, and adolescent's sex.Results: We found some evidence that the cotinine-outcome associations differed by exposure period and sex. Postnatal, but not prenatal, cotinine was associated with higher CM risk scores and individual CM risk component values (interaction p-values = 0.04 to 0.35). Each 10-fold increase in postnatal cotinine was associated with 0.57 (95% CI: 0.32, 1.45), 0.09 (95% CI: 0.13, 0.31), 0.14 (-0.08, 0.35), 0.07 (95% CI: 0.34, 0.48), and 0.11 (95% CI: 0.04, 0.27) higher CM risk, HOMA-IR, TG to HDL-C ratio, leptin to adiponectin ratio, and visceral fat area. Postnatal cotinine was associated with higher visceral fat area among females but not males (sex × period × cotinine interaction p-value = 0.01).Conclusions: Serum cotinine concentrations during the postnatal period had greater influence on adolescent's CM risk compared to the prenatal period, and these associations may be sex-specific. This study reinforces the need for ongoing public health interventions to minimize children's exposure to SHS PB Elsevier YR 2023 FD 2023 LK http://hdl.handle.net/10347/30615 UL http://hdl.handle.net/10347/30615 LA eng NO Environmental Research 224 (2023) 115572 NO The HOME Study was funded by National Institutes of Environmental Health Sciences grants P01 ES011261, R01 ES014575 and R01 ES015517. The U.S. National Institutes (National Institute of Environmental Health Sciences), Environmental Protection Agency, Department of Housing and Urban Development, and Flight Attendant Medical Research Institute provided funding for the presented results in the HOME Study DS Minerva RD 22 abr 2026