PMID- 29990518 OWN - NLM STAT- MEDLINE DCOM- 20190411 LR - 20190411 IS - 1879-3185 (Electronic) IS - 0300-483X (Linking) VI - 408 DP - 2018 Sep 1 TI - Low-expressional IGF1 mediated methimazole-induced liver developmental toxicity in fetal mice. PG - 70-79 LID - S0300-483X(18)30135-5 [pii] LID - 10.1016/j.tox.2018.07.004 [doi] AB - Anti-thyroid drugs (ATDs) therapy is necessary for pregnant women with hyperthyroidism. However, there is a lack of studies on developmental toxicity of ATDs. In this study, we observed the developmental toxicity of fetal liver induced by prenatal methimazole exposure (PME) in mice, and explored the potential mechanism. Pregnant Kunming mice were administered intragastrically with 4.5 or 18 mg/kg.d methimazole from gestational day (GD) 9 approximately 18. After PME, the birth weights of the offspring mice were decreased, and the liver morphology, development indexes and metabolic function were all altered in different degree in the PME fetuses. Meanwhile, PME decreased the levels of serum and hepatic insulin-like growth factor 1 (IGF1), and reduced the gene expression of IGF1 downstream signaling pathway. Furthermore, the protein levels of phosphorylated-extracellular regulated protein kinases (p-ERK) and serine-threonine protein kinase (p-Akt) were also reduced. Furthermore, methimazole disturb hepatocyte differentiation, maturation and metabolic function through suppressing IGF1 signaling pathway in HepG2 cells. These results demonstrated that PME could induce fetal liver developmental toxicity, and the underlying mechanism was related to low-expression of hepatic IGF1 caused by methimazole, which mediated abnormal liver morphology and metabolic function. CI - Copyright (c) 2018 Elsevier B.V. All rights reserved. FAU - Wang, Guihua AU - Wang G AD - Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China. FAU - He, Bo AU - He B AD - Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China. FAU - Hu, Wen AU - Hu W AD - Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China. FAU - Liu, Kexin AU - Liu K AD - Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China. FAU - Gong, Xiaohan AU - Gong X AD - Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China. FAU - Kou, Hao AU - Kou H AD - Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China. FAU - Guo, Yu AU - Guo Y AD - Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China. Electronic address: guoy@whu.edu.cn. FAU - Wang, Hui AU - Wang H AD - Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China. Electronic address: wanghui19@whu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180707 PL - Ireland TA - Toxicology JT - Toxicology JID - 0361055 RN - 0 (Antithyroid Agents) RN - 0 (IGF1 protein, human) RN - 0 (insulin-like growth factor-1, mouse) RN - 554Z48XN5E (Methimazole) RN - 67763-96-6 (Insulin-Like Growth Factor I) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.24 (Extracellular Signal-Regulated MAP Kinases) SB - IM MH - Animals MH - Antithyroid Agents/*toxicity MH - Cell Survival/drug effects MH - Dose-Response Relationship, Drug MH - Down-Regulation MH - Extracellular Signal-Regulated MAP Kinases/metabolism MH - Female MH - Gestational Age MH - Hep G2 Cells MH - Hepatocytes/drug effects/metabolism/pathology MH - Humans MH - Insulin-Like Growth Factor I/genetics/*metabolism MH - Liver/*drug effects/embryology/metabolism MH - Maternal Exposure MH - Methimazole/*toxicity MH - Mice MH - Phosphorylation MH - Pregnancy MH - Proto-Oncogene Proteins c-akt/metabolism MH - Signal Transduction/drug effects OTO - NOTNLM OT - Fetal liver developmental toxicity OT - Glucose and lipid metabolic function OT - Insulin-like growth factor 1 (IGF1) OT - Prenatal methimazole exposure EDAT- 2018/07/11 06:00 MHDA- 2019/04/12 06:00 CRDT- 2018/07/11 06:00 PHST- 2018/02/05 00:00 [received] PHST- 2018/06/03 00:00 [revised] PHST- 2018/07/05 00:00 [accepted] PHST- 2018/07/11 06:00 [pubmed] PHST- 2019/04/12 06:00 [medline] PHST- 2018/07/11 06:00 [entrez] AID - S0300-483X(18)30135-5 [pii] AID - 10.1016/j.tox.2018.07.004 [doi] PST - ppublish SO - Toxicology. 2018 Sep 1;408:70-79. doi: 10.1016/j.tox.2018.07.004. Epub 2018 Jul 7.