PMID- 28858760 OWN - NLM STAT- MEDLINE DCOM- 20171013 LR - 20181113 IS - 1096-0953 (Electronic) IS - 0013-9351 (Print) IS - 0013-9351 (Linking) VI - 159 DP - 2017 Nov TI - Sex differences in sensitivity to prenatal and early childhood manganese exposure on neuromotor function in adolescents. PG - 458-465 LID - S0013-9351(17)30508-X [pii] LID - 10.1016/j.envres.2017.08.035 [doi] AB - INTRODUCTION: While studies have suggested that exposure to manganese (Mn) may be associated with neurodevelopment in school-age children, there is limited information on prenatal and postnatal Mn exposures and tremor or motor function in children. METHODS: We measured Mn levels in dentine of shed teeth, representing prenatal, early postnatal, and cumulative childhood exposure windows, from 195 children (predominantly right-handed, 92%) in Italy. Pursuit Aiming, Luria Nebraska Motor Battery, as well as Tremor and Sway system from Computerized Adaptive Testing System (CATSYS) were administered at 11-14 years old. We examined the relationships of tooth Mn (ln-transformed) with motor function using multivariable linear regressions and generalized additive models, adjusting for age, sex, and socioeconomic status index. Effect modification by sex was also examined. RESULTS: We found that higher prenatal Mn was associated with better body stability in boys in a number of sway tests (including mean sway, transversal sway, sagittal sway, sway area, and sway intensity), while Mn was associated with poorer performance in girls on all of these metrics (all p for Mn x sex interaction < 0.05). Higher prenatal Mn was also modestly associated with better hand/finger and eye-hand coordination in boys compared to girls in sex-stratified analyses, although interaction models did not reach statistical significance. For tremor, on the other hand, higher early postnatal Mn was associated with increased right-hand center frequency in girls (p for interaction < 0.01), but increased Mn level at the later postnatal period was associated with increased center frequency in boys (p for interaction = 0.01). CONCLUSIONS: This study, which used a direct measure of prenatal and childhood Mn exposure, suggested sex-specific critical windows of early life Mn exposure in relation to neuromotor function in adolescents. The sex-specific associations might be strongest with measures of whole body stability, for which the critical exposure window was during the prenatal period. CI - Copyright (c) 2017 Elsevier Inc. All rights reserved. FAU - Chiu, Yueh-Hsiu Mathilda AU - Chiu YM AD - Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA. Electronic address: mathilda.chiu@mssm.edu. FAU - Claus Henn, Birgit AU - Claus Henn B AD - Department of Environmental Health, Boston University School of Public Health, Boston, MA, USA. FAU - Hsu, Hsiao-Hsien Leon AU - Hsu HL AD - Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA. FAU - Pendo, Mathew P AU - Pendo MP AD - Center for Medicine, Health and Society, Vanderbilt University College of Arts and Science, Nashville, TN, USA. FAU - Coull, Brent A AU - Coull BA AD - Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA. FAU - Austin, Christine AU - Austin C AD - Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA. FAU - Cagna, Giuseppa AU - Cagna G AD - Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, Section of Occupational Medicine, University of Brescia, Brescia, Italy. FAU - Fedrighi, Chiara AU - Fedrighi C AD - Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, Section of Occupational Medicine, University of Brescia, Brescia, Italy. FAU - Placidi, Donatella AU - Placidi D AD - Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, Section of Occupational Medicine, University of Brescia, Brescia, Italy. FAU - Smith, Donald R AU - Smith DR AD - Department of Microbiology and Environmental Toxicology, University of California, Santa Cruz, USA. FAU - Wright, Robert O AU - Wright RO AD - Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA. FAU - Lucchini, Roberto G AU - Lucchini RG AD - Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, Section of Occupational Medicine, University of Brescia, Brescia, Italy. FAU - Arora, Manish AU - Arora M AD - Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA. LA - eng GR - R01 ES026033/ES/NIEHS NIH HHS/United States GR - DP2 ES025453/ES/NIEHS NIH HHS/United States GR - R00 ES022986/ES/NIEHS NIH HHS/United States GR - P30 ES000002/ES/NIEHS NIH HHS/United States GR - R01 ES018990/ES/NIEHS NIH HHS/United States GR - R56 ES019222/ES/NIEHS NIH HHS/United States GR - R01 ES019222/ES/NIEHS NIH HHS/United States GR - R01 ES013744/ES/NIEHS NIH HHS/United States GR - R00 ES019597/ES/NIEHS NIH HHS/United States GR - P30 ES023515/ES/NIEHS NIH HHS/United States GR - T42OH008422/ACL HHS/United States GR - T42 OH008422/OH/NIOSH CDC HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20170918 PL - Netherlands TA - Environ Res JT - Environmental research JID - 0147621 RN - 0 (Biomarkers) RN - 0 (Environmental Pollutants) RN - 42Z2K6ZL8P (Manganese) SB - IM MH - Adolescent MH - Biomarkers/chemistry MH - Child MH - Child Development/*drug effects MH - *Environmental Exposure MH - Environmental Pollutants/*toxicity MH - Female MH - Humans MH - Italy/epidemiology MH - Male MH - Manganese/*toxicity MH - Nervous System/*drug effects/growth & development MH - Pregnancy MH - Prenatal Exposure Delayed Effects/chemically induced/*epidemiology MH - Sex Factors MH - Tooth/chemistry PMC - PMC5623637 MID - NIHMS902620 OTO - NOTNLM OT - Adolescents OT - Manganese OT - Motor function OT - Prenatal and postnatal exposure OT - Sex difference OT - Tooth biomarker EDAT- 2017/09/01 06:00 MHDA- 2017/10/14 06:00 PMCR- 2018/11/01 CRDT- 2017/09/01 06:00 PHST- 2017/03/14 00:00 [received] PHST- 2017/07/25 00:00 [revised] PHST- 2017/08/18 00:00 [accepted] PHST- 2017/09/01 06:00 [pubmed] PHST- 2017/10/14 06:00 [medline] PHST- 2017/09/01 06:00 [entrez] PHST- 2018/11/01 00:00 [pmc-release] AID - S0013-9351(17)30508-X [pii] AID - 10.1016/j.envres.2017.08.035 [doi] PST - ppublish SO - Environ Res. 2017 Nov;159:458-465. doi: 10.1016/j.envres.2017.08.035. Epub 2017 Sep 18.