biostudies-literatureUnknown74Dos Anjos Cordeiro JMFAPEMIGCAPESConselho Nacional de Desenvolvimento Cientifico e TecnologicoSanta Cruz State UniversityOxidative stress (OS) and endoplasmic reticulum stress (ERS) are at the genesis of placental disorders observed in preeclampsia, intrauterine growth restriction, and maternal hypothyroidism. In this regard, cationic manganese porphyrins (MnPs) comprise potent redox-active therapeutics of high antioxidant and anti-inflammatory potential, which have not been evaluated in metabolic gestational diseases yet. This study evaluated the therapeutic potential of two MnPs, [MnTE-2-PyP]⁵⁺ (MnP I) and [MnT(5-Br-3-E-Py)P]5+ (MnP II), in the fetal-placental dysfunction of hypothyroid rats. Hypothyroidism was induced by administration of 6-Propyl-2-thiouracil (PTU) and treatment with MnPs I and II 0.1 mg/kg/day started on the 8th day of gestation (DG). The fetal and placental development, and Redox biology103238https://www.ebi.ac.uk/biostudies/studies/S-EPMC11225907biostudies-literatureManganese porphyrin-based treatment improves fetal-placental development and protects against oxidative damage and NLRP3 inflammasome activation in a rat maternal hypothyroidism model.PMC11225907Santos EOde Jesus Nascimento AEMendonca LDde Lavor MSLSantos ASSantos BRBarbosa EMSantos LCde Macedo IOReboucas JSMunhoz ADCoura ETDSDos Anjos Cordeiro JMPinho CSDe-Freitas-Silva GRodrigues MESilva JFSarmento-Neto JFfalseManganese porphyrin-based treatment improves fetal-placental development and protects against oxidative damage and NLRP3 inflammasome activation in a rat maternal hypothyroidism model.Oxidative stress (OS) and endoplasmic reticulum stress (ERS) are at the genesis of placental disorders observed in preeclampsia, intrauterine growth restriction, and maternal hypothyroidism. In this regard, cationic manganese porphyrins (MnPs) comprise potent redox-active therapeutics of high antioxidant and anti-inflammatory potential, which have not been evaluated in metabolic gestational diseases yet. This study evaluated the therapeutic potential of two MnPs, [MnTE-2-PyP]⁵⁺ (MnP I) and [MnT(5-Br-3-E-Py)P]5+ (MnP II), in the fetal-placental dysfunction of hypothyroid rats. Hypothyroidism was induced by administration of 6-Propyl-2-thiouracil (PTU) and treatment with MnPs I and II 0.1 mg/kg/day started on the 8th day of gestation (DG). The fetal and placental development, and 2024-01-01T00:00:00Z2024 Aug2026-05-26T14:03:24.013Z2025-04-06T11:37:19.001ZS-EPMC112259073887078010.1016/j.redox.2024.103238