PMID- 33894214 OWN - NLM STAT- MEDLINE DCOM- 20210621 LR - 20240226 IS - 1096-0333 (Electronic) IS - 0041-008X (Linking) VI - 421 DP - 2021 Jun 15 TI - Dose-dependent effects of prenatal exposure of pioglitazone, the PPARgamma agonist, on the hippocampus development and learning and memory performance of rat offspring. PG - 115544 LID - S0041-008X(21)00151-4 [pii] LID - 10.1016/j.taap.2021.115544 [doi] AB - It is known that pioglitazone, defined as a PPARgamma agonist, has neuron-protective properties in nervous system disorders. The aim of this study is to investigate the effects of pioglitazone administration at different doses during prenatal period on the neurons, glial cells and learning-memory levels in the hippocampus of rat offspring. Pregnant rats were divided into three groups; Low-Dose Pioglitazone (LDP), High-Dose Pioglitazone (HDP) and control (C) (n = 3). Pregnant rats in the HDP and LDP groups were given pioglitazone at 30 mg/kg and 5 mg/kg doses, respectively, by gavage once a day during their pregnancy. No procedure was applied to the rats in the control group. Morris water tank test was applied to offspring obtained from postnatal 24th to 28th day. The offspring were sacrificed on the 29th postal day and their brain tissues removed. Stereological, histopathological and immunohistochemical techniques were used to analyze brain tissues. As a result of the analysis, it was observed that there were delays in learning and memory, the number of pyramidal neurons decreased, and the density of cells stained with glial fibrillar acidic protein (GFAP) positive increased in the HDP group compared to the other groups (p < 0.05). No significant difference was found between the LDP and control groups in terms of these parameters (p > 0.05). Our results showed that pioglitazone administered in the prenatal period had an effect on the hippocampus development and learning and memory performance of rats, depending on the dose. CI - Copyright (c) 2021 Elsevier Inc. All rights reserved. FAU - Sagir, Dilek AU - Sagir D AD - Faculty of Health Sciences, Sinop University, 57000 Sinop, Turkey. Electronic address: bio_dilek@hotmail.com. LA - eng PT - Journal Article DEP - 20210421 PL - United States TA - Toxicol Appl Pharmacol JT - Toxicology and applied pharmacology JID - 0416575 RN - 0 (GFAP protein, rat) RN - 0 (Glial Fibrillary Acidic Protein) RN - 0 (PPAR gamma) RN - 0 (PPAR gamma, rat) RN - X4OV71U42S (Pioglitazone) SB - IM MH - Animals MH - Behavior, Animal/*drug effects MH - Dose-Response Relationship, Drug MH - Female MH - Gestational Age MH - Glial Fibrillary Acidic Protein/metabolism MH - Hippocampus/*drug effects/metabolism/physiopathology MH - Learning/*drug effects MH - Memory/drug effects MH - Morris Water Maze Test/drug effects MH - Neuroglia/drug effects/metabolism/pathology MH - PPAR gamma/*agonists/metabolism MH - Pioglitazone/*toxicity MH - Pregnancy MH - *Prenatal Exposure Delayed Effects MH - Pyramidal Cells/*drug effects/metabolism/pathology MH - Rats, Wistar MH - Rats OTO - NOTNLM OT - Glial fibrillar acidic protein (GFAP) OT - Hippocampus OT - Learning and memory OT - Neurotoxicity OT - PPARgamma OT - Pioglitazone EDAT- 2021/04/25 06:00 MHDA- 2021/06/22 06:00 CRDT- 2021/04/24 20:08 PHST- 2021/02/08 00:00 [received] PHST- 2021/04/10 00:00 [revised] PHST- 2021/04/19 00:00 [accepted] PHST- 2021/04/25 06:00 [pubmed] PHST- 2021/06/22 06:00 [medline] PHST- 2021/04/24 20:08 [entrez] AID - S0041-008X(21)00151-4 [pii] AID - 10.1016/j.taap.2021.115544 [doi] PST - ppublish SO - Toxicol Appl Pharmacol. 2021 Jun 15;421:115544. doi: 10.1016/j.taap.2021.115544. Epub 2021 Apr 21.