PMID- 32828006 OWN - NLM STAT- MEDLINE DCOM- 20210810 LR - 20210810 IS - 1532-3102 (Electronic) IS - 0143-4004 (Linking) VI - 100 DP - 2020 Oct TI - Placental distribution of endogenous and exogenous substances: A pilot study utilizing cryo-sampled specimen off delivery room. PG - 45-53 LID - S0143-4004(20)30262-9 [pii] LID - 10.1016/j.placenta.2020.08.009 [doi] AB - INTRODUCTION: Reliability in the use of placentome (including placenta, umbilical cord, and cord blood) biomarkers requires an understanding of their distributions. Here we aim to develop a simple and proper placenta sampling scheme, and to evaluate the placental distributions of biomarkers. METHODS: We developed a continuous cooling chain protocol off delivery room and cryo-subsampling method for placenta sampling. The levels of thyroid hormones (THs), elements, persistent organic pollutants (POPs), monoamines, and vitamin E were measured using UPLC-Q-TOF-MS, HPLC-ICP-MS, HPLC-EcD, and HRGC-HRMS, respectively. The distributions of biomarkers were assessed. RESULTS: In human placentome, (l)-thyroxine (T(4)), Cd, Se, Zn, Cu, Fe, Ca, K, Mg, alpha-tocopherol, beta-tocopherol, and beta-tocotrienol levels were higher in placenta than in umbilical cord, while Pb and Mn were concentrated in human cord. In porcine placentome, T(4), 3,3',5'-triiodo-(l)-thyronine (rT(3)), 3,3'-diiodo-(l)-thyronine, Cd, Pb, Zn, K, and Al levels were higher in the cord. The intraclass correlation coefficient (ICC) was <0.4 for 3,3',5-triiodo-(l)-thyronine, rT(3), alpha-tocopherol, and 7 elements in human basal plate, indicating low reliability. rT(3), Cd, Zn, Mn, and Cu were significantly concentrated in the central region in human placenta, while higher levels of As, Cd, Cr, and Al were found in the periphery region in porcine placenta. Polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) showed moderate reliability (ICC: 0.40-0.98) except PCB-81, -126, and BDE-208, while polychlorinated dibenzo-p-doixins/furans (PCDD/Fs) showed poor reliability (ICC: 0.07-0.31). DISCUSSION: These results highlight the complexity of placenta sampling. This study provides a novel and simple sampling approach in investigating placental exposomics. CI - Copyright (c) 2020 Elsevier Ltd. All rights reserved. FAU - Li, Zhong-Min AU - Li ZM AD - Helmholtz Zentrum Munchen-German Research Center for Environmental Health (GmbH), Molecular EXposomics, Ingolstadter Landstr. 1, 85764, Neuherberg, Germany; School of Life Sciences Weihenstephan (Nutrition), Technische Universitat Munchen, 85354, Freising, Germany. Electronic address: zhong-min.li@helmholtz-muenchen.de. FAU - Benker, Barbel AU - Benker B AD - Helmholtz Zentrum Munchen-German Research Center for Environmental Health (GmbH), Research Unit Analytical BioGeoChemistry, Ingolstadter Landstr. 1, 85764, Neuherberg, Germany. FAU - Bao, Qibei AU - Bao Q AD - Ningbo College of Health Sciences, 315100, Ningbo, Zhejiang, China. FAU - Henkelmann, Bernhard AU - Henkelmann B AD - Helmholtz Zentrum Munchen-German Research Center for Environmental Health (GmbH), Molecular EXposomics, Ingolstadter Landstr. 1, 85764, Neuherberg, Germany. FAU - Corsten, Claudia AU - Corsten C AD - Helmholtz Zentrum Munchen-German Research Center for Environmental Health (GmbH), Molecular EXposomics, Ingolstadter Landstr. 1, 85764, Neuherberg, Germany. FAU - Michalke, Bernhard AU - Michalke B AD - Helmholtz Zentrum Munchen-German Research Center for Environmental Health (GmbH), Research Unit Analytical BioGeoChemistry, Ingolstadter Landstr. 1, 85764, Neuherberg, Germany. FAU - Pauluschke-Frohlich, Jan AU - Pauluschke-Frohlich J AD - Department fur Frauengesundheit Universitats-Frauenklinik Tubingen, Calwerstr. 7, 70276, Tubingen, Germany. FAU - Flisikowski, Krzysztof AU - Flisikowski K AD - Lehrstuhl fur Biotechnologie der Nutztiere, Technische Universitat Munchen, Liesel-Beckmannstr. 1, 85354, Freising, Germany. FAU - Schramm, Karl-Werner AU - Schramm KW AD - Helmholtz Zentrum Munchen-German Research Center for Environmental Health (GmbH), Molecular EXposomics, Ingolstadter Landstr. 1, 85764, Neuherberg, Germany; Department fur Biowissenschaftliche Grundlagen, Technische Universitat Munchen, Weihenstephaner Steig 23, 85350, Freising, Germany. FAU - De Angelis, Meri AU - De Angelis M AD - Helmholtz Zentrum Munchen-German Research Center for Environmental Health (GmbH), Molecular EXposomics, Ingolstadter Landstr. 1, 85764, Neuherberg, Germany. Electronic address: meri.deangelis@helmholtz-muenchen.de. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200811 PL - Netherlands TA - Placenta JT - Placenta JID - 8006349 RN - 0 (Biogenic Monoamines) RN - 0 (Thyroid Hormones) RN - 1406-18-4 (Vitamin E) SB - IM MH - Adult MH - Animals MH - Biogenic Monoamines/analysis MH - Cryopreservation MH - Female MH - Humans MH - Persistent Organic Pollutants/*metabolism MH - Pilot Projects MH - Placenta/*chemistry/metabolism MH - Pregnancy MH - Specimen Handling/*methods MH - Swine MH - Thyroid Hormones/*analysis MH - Vitamin E/*analysis MH - Young Adult OTO - NOTNLM OT - Elements OT - Monoamines OT - Persistent organic pollutants OT - Placental distribution OT - Thyroid hormones OT - Vitamin E EDAT- 2020/08/23 06:00 MHDA- 2021/08/11 06:00 CRDT- 2020/08/23 06:00 PHST- 2020/05/19 00:00 [received] PHST- 2020/07/29 00:00 [revised] PHST- 2020/08/10 00:00 [accepted] PHST- 2020/08/23 06:00 [pubmed] PHST- 2021/08/11 06:00 [medline] PHST- 2020/08/23 06:00 [entrez] AID - S0143-4004(20)30262-9 [pii] AID - 10.1016/j.placenta.2020.08.009 [doi] PST - ppublish SO - Placenta. 2020 Oct;100:45-53. doi: 10.1016/j.placenta.2020.08.009. Epub 2020 Aug 11.