PMID- 28077780 OWN - NLM STAT- MEDLINE DCOM- 20180426 LR - 20240318 IS - 1096-0929 (Electronic) IS - 1096-6080 (Print) IS - 1096-0929 (Linking) VI - 155 IP - 2 DP - 2017 Feb TI - Editor's Highlight: Exposure to CrVI during Early Pregnancy Increases Oxidative Stress and Disrupts the Expression of Antioxidant Proteins in Placental Compartments. PG - 497-511 LID - 10.1093/toxsci/kfw231 [doi] AB - Epidemiologic studies document relationships between chromium VI (CrVI) exposure and increased risk of spontaneous abortion, stillbirth, preterm birth, and neonatal death in pregnant women. Environmental contamination with CrVI is a growing problem both in the United States and developing countries. CrVI is widely used in numerous industries. This study was designed to understand the mechanism of CrVI toxicity on placental oxidative stress and antioxidant (AOX) machinery. Pregnant mother rats were treated with or without CrVI (50 ppm K(2)Cr(2)O(7)) through drinking water from gestational day (GD) 9.5-14.5, and placentas were analyzed on GD 18.5. Results indicated that CrVI reduced the trophoblast cell population. CrVI increased reactive oxygen species (ROS) and decreased the expression of AOX proteins. CrVI disrupts the trophoblast proliferation of the placenta. This study provides insight into the critical role of AOXs in placental function. CI - (c) The Author 2016. Published by Oxford University Press on behalf of the Society of Toxicology. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com. FAU - Banu, Sakhila K AU - Banu SK AD - Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Mail stop TAMU 4458, Texas A&M University, College Station, Texas 77843 skbanu@cvm.tamu.edu. FAU - Stanley, Jone A AU - Stanley JA AD - Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Mail stop TAMU 4458, Texas A&M University, College Station, Texas 77843. FAU - Sivakumar, Kirthiram K AU - Sivakumar KK AD - Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Mail stop TAMU 4458, Texas A&M University, College Station, Texas 77843. FAU - Taylor, Robert J AU - Taylor RJ AD - Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Mail stop TAMU 4458, Texas A&M University, College Station, Texas 77843. FAU - Arosh, Joe A AU - Arosh JA AD - Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Mail stop TAMU 4458, Texas A&M University, College Station, Texas 77843. FAU - Burghardt, Robert C AU - Burghardt RC AD - Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Mail stop TAMU 4458, Texas A&M University, College Station, Texas 77843. LA - eng GR - P30 ES023512/ES/NIEHS NIH HHS/United States GR - R01 ES025234/ES/NIEHS NIH HHS/United States GR - S10 RR022532/RR/NCRR NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20161115 PL - United States TA - Toxicol Sci JT - Toxicological sciences : an official journal of the Society of Toxicology JID - 9805461 RN - 0 (Environmental Pollutants) RN - 0R0008Q3JB (Chromium) RN - 18540-29-9 (chromium hexavalent ion) SB - IM MH - Animals MH - Cell Proliferation/drug effects MH - Chromium/*toxicity MH - Environmental Pollutants/*toxicity MH - Female MH - *Maternal Exposure MH - *Oxidative Stress MH - Placenta/cytology/*drug effects/enzymology MH - Pregnancy MH - Rats MH - Trophoblasts/drug effects PMC - PMC5291216 OTO - NOTNLM OT - Gpx1 OT - Prdx3. OT - Sod OT - oxidative stress OT - rat placenta and chromium OT - trophoblast EDAT- 2017/01/13 06:00 MHDA- 2018/04/27 06:00 PMCR- 2018/02/01 CRDT- 2017/01/13 06:00 PHST- 2017/01/13 06:00 [pubmed] PHST- 2018/04/27 06:00 [medline] PHST- 2017/01/13 06:00 [entrez] PHST- 2018/02/01 00:00 [pmc-release] AID - kfw231 [pii] AID - 10.1093/toxsci/kfw231 [doi] PST - ppublish SO - Toxicol Sci. 2017 Feb;155(2):497-511. doi: 10.1093/toxsci/kfw231. Epub 2016 Nov 15.