PMID- 34293696 OWN - NLM STAT- MEDLINE DCOM- 20220113 LR - 20220113 IS - 1880-0920 (Electronic) IS - 1347-4367 (Linking) VI - 40 DP - 2021 Oct TI - Effects of valproate, an HDAC inhibitor, on the expression of folate carriers and folate metabolism-related genes in the placenta of rats. PG - 100409 LID - S1347-4367(21)00030-6 [pii] LID - 10.1016/j.dmpk.2021.100409 [doi] AB - Valproate (VPA), an antiepileptic drug, is known to inhibit histone deacetylases (HDACs). Exposure to VPA during pregnancy increases several fetal risks. The maintenance of folate level during pregnancy is essential for adequate fetal development, and the placenta plays a critical role in supplying nutrients to the fetus. The aim of this study was to elucidate the effects of VPA on the gene expression of folate carriers and metabolizing enzymes in the rat placenta at both mid and late gestation periods. Pregnant rats were orally administered VPA on a single day or 4 days (repeated administration). Gene expression of folate carriers (Folr1, Slc19a1, Slc46a1) and metabolizing enzymes (Cth, Mtr, Mtrr, Mthfr, Dhfr) was assessed in the placenta on gestational day (GD) 13 or GD20. In the control rats, the expression of Folr1, Slc46a1, Cth, and Mthfr tended to be upregulated, whereas that of Mtrr and Dhfr was downregulated during gestation; the expression of Slc19a1 and Mtr did not change. Repeated VPA administration reduced the placental expression of Folr1and Mtr on GD20 and increased the expression of Dhfr on GD13 compared with the control. These findings indicate that administration of VPA alters the placental gene expression of folate carriers and metabolism-related enzymes. CI - Copyright (c) 2021 The Japanese Society for the Study of Xenobiotics. Published by Elsevier Ltd. All rights reserved. FAU - Furugen, Ayako AU - Furugen A AD - Laboratory of Clinical Pharmaceutics & Therapeutics, Division of Pharmasciences, Faculty of Pharmaceutical Sciences, Hokkaido University. Electronic address: afurugen@pharm.hokudai.ac.jp. FAU - Kanno, Yuki AU - Kanno Y AD - Laboratory of Clinical Pharmaceutics & Therapeutics, Division of Pharmasciences, Faculty of Pharmaceutical Sciences, Hokkaido University. FAU - Ohyama, Nanami AU - Ohyama N AD - Laboratory of Clinical Pharmaceutics & Therapeutics, Division of Pharmasciences, Faculty of Pharmaceutical Sciences, Hokkaido University. FAU - Kurosawa, Yuko AU - Kurosawa Y AD - Laboratory of Clinical Pharmaceutics & Therapeutics, Division of Pharmasciences, Faculty of Pharmaceutical Sciences, Hokkaido University. FAU - Jinno, Naoko AU - Jinno N AD - Laboratory of Clinical Pharmaceutics & Therapeutics, Division of Pharmasciences, Faculty of Pharmaceutical Sciences, Hokkaido University. FAU - Narumi, Katsuya AU - Narumi K AD - Laboratory of Clinical Pharmaceutics & Therapeutics, Division of Pharmasciences, Faculty of Pharmaceutical Sciences, Hokkaido University. FAU - Iseki, Ken AU - Iseki K AD - Laboratory of Clinical Pharmaceutics & Therapeutics, Division of Pharmasciences, Faculty of Pharmaceutical Sciences, Hokkaido University. FAU - Kobayashi, Masaki AU - Kobayashi M AD - Laboratory of Clinical Pharmaceutics & Therapeutics, Division of Pharmasciences, Faculty of Pharmaceutical Sciences, Hokkaido University. Electronic address: masaki@pharm.hokudai.ac.jp. LA - eng PT - Journal Article DEP - 20210607 PL - England TA - Drug Metab Pharmacokinet JT - Drug metabolism and pharmacokinetics JID - 101164773 RN - 0 (Anticonvulsants) RN - 0 (Histone Deacetylase Inhibitors) RN - 0 (Membrane Transport Proteins) RN - 0 (Minor Histocompatibility Antigens) RN - 0 (Proton-Coupled Folate Transporter) RN - 0 (Reduced Folate Carrier Protein) RN - 0 (Slc19a1 protein, rat) RN - 0 (Slc46a1 protein, rat) RN - 614OI1Z5WI (Valproic Acid) RN - 935E97BOY8 (Folic Acid) SB - IM MH - Animals MH - Anticonvulsants/therapeutic use MH - Female MH - Folic Acid MH - Histone Deacetylase Inhibitors/pharmacology MH - Membrane Transport Proteins MH - Minor Histocompatibility Antigens MH - *Placenta MH - Pregnancy MH - Proton-Coupled Folate Transporter/genetics MH - Rats MH - Reduced Folate Carrier Protein/genetics MH - *Valproic Acid OTO - NOTNLM OT - Enzyme OT - Folate OT - Histone deacetylase OT - Placenta OT - Rat OT - Transporter OT - Valproate COIS- Declaration of competing interest The authors declare no conflicts of interest. EDAT- 2021/07/23 06:00 MHDA- 2022/01/14 06:00 CRDT- 2021/07/22 20:23 PHST- 2021/01/08 00:00 [received] PHST- 2021/04/30 00:00 [revised] PHST- 2021/05/31 00:00 [accepted] PHST- 2021/07/23 06:00 [pubmed] PHST- 2022/01/14 06:00 [medline] PHST- 2021/07/22 20:23 [entrez] AID - S1347-4367(21)00030-6 [pii] AID - 10.1016/j.dmpk.2021.100409 [doi] PST - ppublish SO - Drug Metab Pharmacokinet. 2021 Oct;40:100409. doi: 10.1016/j.dmpk.2021.100409. Epub 2021 Jun 7.