PMID- 36890410 OWN - NLM STAT- MEDLINE DCOM- 20230907 LR - 20230913 IS - 1933-7205 (Electronic) IS - 1933-7191 (Print) IS - 1933-7191 (Linking) VI - 30 IP - 9 DP - 2023 Sep TI - The Effects of Treatment with Icariin on Immune Tolerance in the Recurrent Spontaneous Abortion Mice. PG - 2794-2804 LID - 10.1007/s43032-023-01185-0 [doi] AB - Recurrent spontaneous abortion (RSA) is the most common pregnancy-related complication, affecting 1-5% of pregnancies. Currently, immune imbalance at the maternal-fetal interface is one of the main causes of recurrent abortion. Icariin (ICA) can exert immunomodulatory effects in a variety of autoimmune diseases. Nevertheless, it has not been reported for use in recurrent abortion. In this study, to clarify the effects and mechanisms of ICA for recurrent abortion, female mice CBA/J were randomly divided into Normal group, RSA group and RSA + ICA group. From 0.5 days of pregnancy to 12.5 days, the RSA + ICA group was subjected to orally ICA (50 mg/Kg) daily, and the Normal group and the RSA group were given with an equal volume of distilled water. The results showed the amount of reabsorbed embryo in the RSA group was significantly higher than that in the normal-pregnancy group. However, ICA treatment showed a rescue effect on spontaneous abortion in RSA mice. ICA was able to increase the ratio of the labyrinth to total placental area in abortion-prone model. Further investigation showed that ICA treatment can expand the regulatory T cell (Treg) population in mice prone to abortion, significantly decrease the populations of Th1 cells, and reduce the expression of pro-inflammatory factors. Additionally, ICA treatment was able to decrease the expression of mechanical target of rapamycin (mTOR) in the placenta. ICA may increase Treg cell expansion and reducing pro-inflammatory factors expression via the mTOR pathway, then reducing placental inflammation and improving pregnancy outcomes in abortion-prone mice. CI - (c) 2023. The Author(s). FAU - Peng, Fang AU - Peng F AD - Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Han, Zhongyu AU - Han Z AD - Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Chen, Haoran AU - Chen H AD - Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Zhang, Qinxiu AU - Zhang Q AD - Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Liu, Chi AU - Liu C AD - Department of Nephrology, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Sichuan Renal Disease Clinical Research Center, University of Electronic Science and Technology of China, Chengdu, China. liuchi1985@163.com. AD - Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, 610072, China. liuchi1985@163.com. FAU - Liang, Xin AU - Liang X AUID- ORCID: 0000-0003-2167-5368 AD - Chengdu University of Traditional Chinese Medicine, Chengdu, China. liangxin@cdutcm.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230308 PL - United States TA - Reprod Sci JT - Reproductive sciences (Thousand Oaks, Calif.) JID - 101291249 RN - VNM47R2QSQ (icariin) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Humans MH - Female MH - Pregnancy MH - Animals MH - Mice MH - *Abortion, Spontaneous MH - Placenta MH - Mice, Inbred CBA MH - *Abortion, Habitual MH - TOR Serine-Threonine Kinases MH - Immune Tolerance PMC - PMC10480255 OTO - NOTNLM OT - Icariin OT - Immune tolerance OT - Recurrent spontaneous abortion OT - Treg cells OT - mTOR signaling pathway COIS- The authors declare no competing interests. EDAT- 2023/03/09 06:00 MHDA- 2023/09/07 06:42 PMCR- 2023/03/08 CRDT- 2023/03/08 23:25 PHST- 2022/07/03 00:00 [received] PHST- 2023/01/29 00:00 [accepted] PHST- 2023/09/07 06:42 [medline] PHST- 2023/03/09 06:00 [pubmed] PHST- 2023/03/08 23:25 [entrez] PHST- 2023/03/08 00:00 [pmc-release] AID - 10.1007/s43032-023-01185-0 [pii] AID - 1185 [pii] AID - 10.1007/s43032-023-01185-0 [doi] PST - ppublish SO - Reprod Sci. 2023 Sep;30(9):2794-2804. doi: 10.1007/s43032-023-01185-0. Epub 2023 Mar 8.