PMID- 36776564 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230214 IS - 2753-149X (Electronic) IS - 2753-149X (Linking) VI - 1 DP - 2022 TI - Adolescent fluoxetine exposure increases ERK-related signaling within the prefrontal cortex of adult male Sprague-Dawley rats. LID - kvac015 [pii] LID - 10.1093/oons/kvac015 [doi] AB - There has been a disproportionate increase in fluoxetine (FLX) prescription rates within the juvenile population. Thus, we evaluated how adolescent FLX exposure alters expression/phosphorylation of proteins from the extracellular signal regulated kinase (ERK)-1/2 cascade within the adult prefrontal cortex (PFC). Male Sprague-Dawley rats were exposed to FLX (20 mg/kg) for 15 consecutive days (postnatal-day [PD] 35-49). At PD70 (adulthood), we examined protein markers for ERK1/2, ribosomal S6 kinase (RSK), and mammalian target of rapamycin (mTOR). FLX-pretreatment decreased body weight, while increasing PFC phosphorylation of ERK1/2 and RSK, as well as total mTOR protein expression in adulthood. We provide first-line evidence that juvenile FLX-pretreatment induces long-term decreases in body weight-gain, along with neurobiological changes in the adult PFC - highlighting that early-life antidepressant exposure increases ERK-related signaling markers in later life. FAU - Themann, Anapaula AU - Themann A AD - Department of Psychology, The University of Texas at El Paso, El Paso, TX, USA. FAU - Rodriguez, Minerva AU - Rodriguez M AD - Department of Psychology, The University of Texas at El Paso, El Paso, TX, USA. FAU - Garcia-Carachure, Israel AU - Garcia-Carachure I AD - Department of Psychology, The University of Texas at El Paso, El Paso, TX, USA. FAU - Lira, Omar AU - Lira O AD - Department of Psychology, The University of Texas at El Paso, El Paso, TX, USA. FAU - Iniguez, Sergio D AU - Iniguez SD AD - Department of Psychology, The University of Texas at El Paso, El Paso, TX, USA. LA - eng GR - SC2 GM109811/GM/NIGMS NIH HHS/United States GR - SC3 GM130467/GM/NIGMS NIH HHS/United States PT - Journal Article DEP - 20221020 PL - England TA - Oxf Open Neurosci JT - Oxford open neuroscience JID - 9918487584406676 PMC - PMC9918101 MID - NIHMS1844978 OTO - NOTNLM OT - Antidepressant OT - ERK OT - Long-term OT - MAPK OT - RSK OT - mTOR COIS- Conflict of Interest The authors declare no financial or non-financial conflicts of interest. The funding agency was not involved in the experimental design, data collection process, interpretation of results, nor writing of the manuscript for publication. EDAT- 2023/02/14 06:00 MHDA- 2023/02/14 06:01 PMCR- 2022/10/20 CRDT- 2023/02/13 03:21 PHST- 2023/02/13 03:21 [entrez] PHST- 2023/02/14 06:00 [pubmed] PHST- 2023/02/14 06:01 [medline] PHST- 2022/10/20 00:00 [pmc-release] AID - kvac015 [pii] AID - 10.1093/oons/kvac015 [doi] PST - ppublish SO - Oxf Open Neurosci. 2022;1:kvac015. doi: 10.1093/oons/kvac015. Epub 2022 Oct 20.