PMID- 38135079 OWN - NLM STAT- MEDLINE DCOM- 20240118 LR - 20240118 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 912 DP - 2024 Feb 20 TI - Prenatal exposure to hexafluoropropylene oxide trimer acid (HFPO-TA) disrupts the maternal gut microbiome and fecal metabolome homeostasis. PG - 169330 LID - S0048-9697(23)07960-3 [pii] LID - 10.1016/j.scitotenv.2023.169330 [doi] AB - Initially considered a "safe" substitute for perfluorooctanoic acid (PFOA), hexafluoropropylene oxide trimer acid (HFPO-TA) has been extensively used in the production of fluoropolymers for several years, leading to its environmental ubiquity and subsequent discovery of its significant bio-accumulative properties and toxicological effects. However, the specific impact of HFPO-TA on females, particularly those who are pregnant, remains unclear. In the present study, pregnant mice were exposed to 0.63 mg/kg/day HFPO-TA from gestational day (GD) 2 to GD 18. We then determined the potential effects of exposure on gut microbiota and fecal metabolites at GD 12 (mid-pregnancy) and GD 18 (late pregnancy). Our results revealed that, in addition to liver damage, HFPO-TA exposure during the specified window altered the structure and function of cecal gut microbiota. Notably, these changes showed the opposite trends at GD 12 and GD 18. Specifically, at GD 12, HFPO-TA exposure primarily resulted in the down-regulation of relative abundances within genera from the Bacteroidetes and Proteobacteria phyla, as well as associated Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. With extended exposure time, the down-regulated genera within Proteobacteria became significantly up-regulated, accompanied by corresponding up-regulation of human disease- and inflammation-associated pathways, suggesting that HFPO-TA exposure can induce intestinal inflammation and elevate the risk of infection during late pregnancy. Pearson correlation analysis revealed that disturbances in the gut microbiota were accompanied by abnormal fecal metabolite. Additionally, alterations in hormones related to the steroid hormone biosynthesis pathway at both sacrifice time indicated that HFPO-TA exposure might change the steroid hormone level of pregnant mice, but need further study. In conclusion, this study provides new insights into the mechanisms underlying HFPO-TA-induced adverse effects and increases awareness of potential persistent health risks to pregnant females. CI - Copyright (c) 2023 Elsevier B.V. All rights reserved. FAU - Shi, Guohui AU - Shi G AD - State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China. FAU - Zhu, Bao AU - Zhu B AD - State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Sciences and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. FAU - Wu, Qi AU - Wu Q AD - State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China. FAU - Dai, Jiayin AU - Dai J AD - State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Sciences and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. FAU - Sheng, Nan AU - Sheng N AD - State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Sciences and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address: shengnan@sjtu.edu.cn. LA - eng PT - Journal Article DEP - 20231220 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (ammonium 2,3,3,3-tetrafluoro-2-(heptafluoropropoxy)-propanoate) RN - 0 (Fluorocarbons) RN - 0 (Hormones) RN - 0 (Steroids) RN - 0 (Propionates) SB - IM MH - Female MH - Pregnancy MH - Mice MH - Animals MH - Humans MH - *Gastrointestinal Microbiome MH - *Prenatal Exposure Delayed Effects MH - *Fluorocarbons/toxicity MH - Homeostasis MH - Metabolome MH - Proteobacteria MH - Hormones MH - Inflammation MH - Steroids MH - *Propionates OTO - NOTNLM OT - Fecal metabolome OT - Gut microbiome OT - HFPO-TA OT - Pregnancy exposure COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/12/23 12:42 MHDA- 2024/01/18 06:43 CRDT- 2023/12/22 19:30 PHST- 2023/10/08 00:00 [received] PHST- 2023/12/09 00:00 [revised] PHST- 2023/12/11 00:00 [accepted] PHST- 2024/01/18 06:43 [medline] PHST- 2023/12/23 12:42 [pubmed] PHST- 2023/12/22 19:30 [entrez] AID - S0048-9697(23)07960-3 [pii] AID - 10.1016/j.scitotenv.2023.169330 [doi] PST - ppublish SO - Sci Total Environ. 2024 Feb 20;912:169330. doi: 10.1016/j.scitotenv.2023.169330. Epub 2023 Dec 20.