PMID- 33647821 OWN - NLM STAT- MEDLINE DCOM- 20211231 LR - 20211231 IS - 1532-3102 (Electronic) IS - 0143-4004 (Linking) VI - 106 DP - 2021 Mar TI - Fetal exposure to environmental chemicals; insights from placental perfusion studies. PG - 58-66 LID - S0143-4004(21)00033-3 [pii] LID - 10.1016/j.placenta.2021.01.025 [doi] AB - INTRODUCTION: The burden of environmental chemicals in the human population is ubiquitous and especially problematic in pregnancy due to potential exposure of the vulnerable fetus. According to the Developmental Origins of Health and Disease hypothesis, the fetal period is highly sensitive to exposure to environmental factors that will determine the development of diseases later in life. A range of environmental chemicals has been studied in the ex vivo placental perfusion model, which is a human model using the intact placenta directly after birth to study the placental transfer and metabolism of selected compounds. METHODS: Here, we reviewed the existing knowledge on human placental perfusion of environmental chemicals in order to identify potential correlations between placental transfer and properties of chemicals and areas of future research needs. RESULTS: We found 32 studies of the following groups of environmental chemicals: pesticides, persistent organic pollutants (POPs), plastics and byproducts, phyto/myco-estrogens and fungal toxins, byproducts from heating/curing food, combustion in traffic and industry, and metals. The studies showed highly distinct transfer rates from very fast transport to the fetal side to negligible transfer. DISCUSSION: In general, a low molecular weight favors placental translocation, but placental translocation is dependent on other physicochemical properties of the substances, claiming the need for more standardized studies and proper quantitative structure-activity relationship (QSAR) analysis. Overall, we recommend using placental perfusion studies in the risk assessment of environmental toxicants, to determine the transfer, metabolism and toxic effects of this diverse class of substances, on the human term placenta. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Mathiesen, Line AU - Mathiesen L AD - Department of Public Health, Section of Environmental Health, University of Copenhagen, Oster Farimagsgade 5A, DK-1014, Copenhagen, Denmark. Electronic address: lima@sund.ku.dk. FAU - Buerki-Thurnherr, Tina AU - Buerki-Thurnherr T AD - Laboratory for Particles-Biology Interactions, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland. FAU - Pastuschek, Jana AU - Pastuschek J AD - Placenta Lab, Department of Obstetrics, Jena University Hospital, Am Klinikum 1, 07747, Jena, Germany. FAU - Aengenheister, Leonie AU - Aengenheister L AD - Laboratory for Particles-Biology Interactions, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland; Placenta Lab, Department of Obstetrics, Jena University Hospital, Am Klinikum 1, 07747, Jena, Germany. FAU - Knudsen, Lisbeth E AU - Knudsen LE AD - Department of Public Health, Section of Environmental Health, University of Copenhagen, Oster Farimagsgade 5A, DK-1014, Copenhagen, Denmark. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20210213 PL - Netherlands TA - Placenta JT - Placenta JID - 8006349 RN - 0 (Endocrine Disruptors) SB - IM MH - Animals MH - Endocrine Disruptors/*toxicity MH - *Environmental Exposure MH - Female MH - Humans MH - *Maternal Exposure MH - *Maternal-Fetal Exchange MH - Placenta/*drug effects/metabolism MH - Pregnancy OTO - NOTNLM OT - Endocrine disruption OT - Environmental chemicals OT - Environmental toxicity OT - Fetal exposure OT - Maternal exposure OT - Placental barrier OT - Placental perfusion EDAT- 2021/03/02 06:00 MHDA- 2022/01/01 06:00 CRDT- 2021/03/01 20:19 PHST- 2020/07/09 00:00 [received] PHST- 2020/10/19 00:00 [revised] PHST- 2021/01/22 00:00 [accepted] PHST- 2021/03/02 06:00 [pubmed] PHST- 2022/01/01 06:00 [medline] PHST- 2021/03/01 20:19 [entrez] AID - S0143-4004(21)00033-3 [pii] AID - 10.1016/j.placenta.2021.01.025 [doi] PST - ppublish SO - Placenta. 2021 Mar;106:58-66. doi: 10.1016/j.placenta.2021.01.025. Epub 2021 Feb 13.