PMID- 34508824 OWN - NLM STAT- MEDLINE DCOM- 20211227 LR - 20211227 IS - 1879-3185 (Electronic) IS - 0300-483X (Linking) VI - 462 DP - 2021 Oct TI - Triadimefon suppresses fetal adrenal gland development after in utero exposure. PG - 152932 LID - S0300-483X(21)00255-9 [pii] LID - 10.1016/j.tox.2021.152932 [doi] AB - Triadimefon is a broad-spectrum antifungal agent, which is widely used in agriculture to control mold and fungal infections. It is considered an endocrine disruptor. Whether triadimefon exposure can inhibit the development of fetal adrenal glands and the underlying mechanism remain unclear. Thirty-two pregnant female Sprague-Dawley rats were randomly divided into four groups. Dams were gavaged triadimefon (0, 25, 50, and 100 mg/kg/day) daily for 10 days from gestational day (GD) 12 to GD 21. Triadimefon significantly reduced the thickness of the zona fasciculata of male fetuses at 100 mg/kg, although it did not change the thickness of the zona glomerulosa. It significantly reduced the serum aldosterone levels of male fetuses at a dose of 100 mg/kg, and significantly reduced serum corticosterone and adrenocorticotropic hormone levels at doses of 50 and 100 mg/kg. Triadimefon significantly down-regulated the expression of Agtr1, Mc2r, Star, Cyp11b1, Cyp11b2, Igf1, Nr5a1, Sod2, Gpx1, and Cat, but did not affect the mRNA levels of Scarb1, Cyp11a1, Cyp21, Hsd3b1, and Hsd11b2. Triadimefon markedly reduced AT1R, CYP11B2, IGF1, NR5A1, and MC2R protein levels. Triadimefon significantly reduced the phosphorylation of AKT1 and ERK1/2 at 100 mg/kg without affecting the phosphorylation of AKT2. In contrast, it significantly increased AMPK phosphorylation at 100 mg/kg. In conclusion, exposure to triadimefon during gestation inhibits the development of fetal adrenal cortex in male fetuses. This inhibition is possibly due to the reduction of several proteins required for the synthesis of steroid hormones, and may be involved in changes in antioxidant contents and the phosphorylation of AKT1, ERK1/2, and AMPK. CI - Copyright (c) 2021. Published by Elsevier B.V. FAU - Xu, Qiang AU - Xu Q AD - Department of Pathology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China. FAU - Chen, Quanxu AU - Chen Q AD - Department of Pathology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China. FAU - Lin, Liben AU - Lin L AD - Department of Pathology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China. FAU - Zhang, Pu AU - Zhang P AD - Department of Pathology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China. FAU - Li, Zengqiang AU - Li Z AD - Department of Anesthesiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China. FAU - Yu, Yige AU - Yu Y AD - Department of Anesthesiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China. FAU - Ma, Feifei AU - Ma F AD - Department of Anesthesiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China. FAU - Ying, Yingfen AU - Ying Y AD - Department of Obstetrics and Gynecology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China. FAU - Li, Xiaoheng AU - Li X AD - Department of Anesthesiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China. FAU - Ge, Ren-Shan AU - Ge RS AD - Department of Anesthesiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, China. Electronic address: r_ge@yahoo.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210909 PL - Ireland TA - Toxicology JT - Toxicology JID - 0361055 RN - 0 (Antioxidants) RN - 0 (Endocrine Disruptors) RN - 0 (Fungicides, Industrial) RN - 0 (Triazoles) RN - 1HW039CJF0 (triadimefon) SB - IM MH - Adrenal Cortex/drug effects/embryology MH - Adrenal Glands/*drug effects/embryology MH - Animals MH - Antioxidants/metabolism MH - Dose-Response Relationship, Drug MH - Endocrine Disruptors/administration & dosage/toxicity MH - Female MH - Fungicides, Industrial/administration & dosage/*toxicity MH - Male MH - Maternal Exposure/*adverse effects MH - Phosphorylation/drug effects MH - Pregnancy MH - Rats MH - Rats, Sprague-Dawley MH - Triazoles/administration & dosage/*toxicity OTO - NOTNLM OT - Adrenal development OT - Antioxidants OT - Fungicide OT - Steroidogenesis OT - Triadimefon EDAT- 2021/09/12 06:00 MHDA- 2021/12/28 06:00 CRDT- 2021/09/11 20:10 PHST- 2021/03/04 00:00 [received] PHST- 2021/08/19 00:00 [revised] PHST- 2021/09/06 00:00 [accepted] PHST- 2021/09/12 06:00 [pubmed] PHST- 2021/12/28 06:00 [medline] PHST- 2021/09/11 20:10 [entrez] AID - S0300-483X(21)00255-9 [pii] AID - 10.1016/j.tox.2021.152932 [doi] PST - ppublish SO - Toxicology. 2021 Oct;462:152932. doi: 10.1016/j.tox.2021.152932. Epub 2021 Sep 9.