Abstract
Mood-related disorders have a high prevalence among children and adolescents, posing a public health challenge, given their adverse impact on these young populations. Treatment with the selective serotonin reuptake inhibitor fluoxetine (FLX) is the first line of pharmacological intervention in pediatric patients suffering from affect-related illnesses. Although the use of this antidepressant has been deemed efficacious in the juvenile population, the enduring neurobiological consequences of adolescent FLX exposure are not well understood. Therefore, we explored for persistent molecular adaptations, in the adult hippocampus, as a function of adolescent FLX pretreatment. To do this, we administered FLX (20 mg/kg/day) to male C57BL/6 mice during adolescence (postnatal day [PD] 35–49). After a 21-day washout period (PD70), whole hippocampal tissue was dissected. We then used qPCR analysis to assess changes in the expression of genes associated with major intracellular signal transduction pathways, including the extracellular signal-regulated kinase (ERK), the phosphatidylinositide-3-kinase (PI3K)/AKT pathway, and the wingless (Wnt)-dishevelled-GSK3β signaling cascade. Our results show that FLX treatment results in long-term dysregulation of mRNA levels across numerous genes from the ERK, PI3K/AKT, and Wnt intracellular signaling pathways, along with increases of the transcription factors CREB, ΔFosB, and Zif268. Lastly, FLX treatment resulted in persistent increases of transcripts associated with cytoskeletal integrity (β-actin) and caspase activation (DIABLO), while decreasing genes associated with metabolism (fucose kinase) and overall neuronal activation (c-Fos). Collectively, these data indicate that adolescent FLX exposure mediates persistent alterations in hippocampal gene expression in adulthood, thus questioning the safety of early-life exposure to this antidepressant medication.
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References
Kessler RC, Bromet EJ (2013) The epidemiology of depression across cultures. Annu Rev Public Health 34:119–138. https://doi.org/10.1146/annurev-publhealth-031912-114409
Bandelow B, Michaelis S (2015) Epidemiology of anxiety disorders in the 21st century. Dialogues Clin Neurosci 17(3):327–335
Birmaher B, Axelson DA, Monk K, Kalas C, Clark DB, Ehmann M, Bridge J, Heo J et al (2003) Fluoxetine for the treatment of childhood anxiety disorders. J Am Acad Child Adolesc Psychiatry 42(4):415–423. https://doi.org/10.1097/01.CHI.0000037049.04952.9F
Merikangas KR, He JP, Burstein M, Swanson SA, Avenevoli S, Cui L, Benjet C, Georgiades K et al (2010) Lifetime prevalence of mental disorders in U.S. adolescents: results from the National Comorbidity Survey Replication--Adolescent Supplement (NCS-A). J Am Acad Child Adolesc Psychiatry 49(10):980–989. https://doi.org/10.1016/j.jaac.2010.05.017
Pine DS, Cohen P, Gurley D, Brook J, Ma Y (1998) The risk for early-adulthood anxiety and depressive disorders in adolescents with anxiety and depressive disorders. Arch Gen Psychiatry 55(1):56–64. https://doi.org/10.1001/archpsyc.55.1.56
Thapar A, Collishaw S, Potter R, Thapar AK (2010) Managing and preventing depression in adolescents. BMJ 340:c209. https://doi.org/10.1136/bmj.c209
Tiller JW (2013) Depression and anxiety. Med J Aust 199(S6):S28–S31
Wehry AM, Beesdo-Baum K, Hennelly MM, Connolly SD, Strawn JR (2015) Assessment and treatment of anxiety disorders in children and adolescents. Curr Psychiatry Rep 17(7):52. https://doi.org/10.1007/s11920-015-0591-z
Bylund DB, Reed AL (2007) Childhood and adolescent depression: why do children and adults respond differently to antidepressant drugs? Neurochem Int 51(5):246–253
Perez-Caballero L, Torres-Sanchez S, Bravo L, Mico JA, Berrocoso E (2014) Fluoxetine: a case history of its discovery and preclinical development. Expert Opin Drug Discovery 9(5):567–578. https://doi.org/10.1517/17460441.2014.907790
Jane Garland JE, Kutcher S, Virani A, Elbe D (2016) Update on the use of SSRIs and SNRIs with children and adolescents in clinical practice. J Can Acad Child Adolesc Psychiatry 25(1):4–10
Bridge JA, Iyengar S, Salary CB, Barbe RP, Birmaher B, Pincus HA, Ren L, Brent DA (2007) Clinical response and risk for reported suicidal ideation and suicide attempts in pediatric antidepressant treatment: a meta-analysis of randomized controlled trials. JAMA 297(15):1683–1696. https://doi.org/10.1001/jama.297.15.1683
Kronenberg S, Apter A, Brent D, Schirman S, Melhem N, Pick N, Gothelf D, Carmel M et al (2007) Serotonin transporter polymorphism (5-HTTLPR) and citalopram effectiveness and side effects in children with depression and/or anxiety disorders. J Child Adolesc Psychopharmacol 17(6):741–750. https://doi.org/10.1089/cap.2006.0144
Bowman MA, Daws LC (2019) Targeting serotonin transporters in the treatment of juvenile and adolescent depression. Front Neurosci 13:156. https://doi.org/10.3389/fnins.2019.00156
Konrad K, Firk C, Uhlhaas PJ (2013) Brain development during adolescence: neuroscientific insights into this developmental period. Deutsches Arzteblatt Int 110(25):425–431. https://doi.org/10.3238/arztebl.2013.0425
Alcantara LF, Warren BL, Parise EM, Iñiguez SD, Bolaños-Guzman CA (2014) Effects of psychotropic drugs on second messenger signaling and preference for nicotine in juvenile male mice. Psychopharmacology 231(8):1479–1492. https://doi.org/10.1007/s00213-014-3434-4
Olivier JD, Blom T, Arentsen T, Homberg JR (2011) The age-dependent effects of selective serotonin reuptake inhibitors in humans and rodents: a review. Prog Neuro-Psychopharmacol Biol Psychiatry 35(6):1400–1408. https://doi.org/10.1016/j.pnpbp.2010.09.013
Garcia-Carachure I, Flores-Ramirez FJ, Castillo SA, Themann A, Arenivar MA, Preciado-Pina J, Zavala AR, Lobo MK et al (2020) Enduring effects of adolescent ketamine exposure on cocaine- and sucrose-induced reward in male and female C57BL/6 mice. Neuropsychopharmacology. https://doi.org/10.1038/s41386-020-0654-7
Sass A, Wortwein G (2012) The effect of subchronic fluoxetine treatment on learning and memory in adolescent rats. Behav Brain Res 228(1):169–175. https://doi.org/10.1016/j.bbr.2011.12.006
Flores-Ramirez FJ, Parise LF, Alipio JB, Garcia-Carachure I, Castillo SA, Rodriguez M, Themman A, Lira O et al (2019) Adolescent fluoxetine history impairs spatial memory in adult male, but not female, C57BL/6 mice. J Affect Disord 249:347–356. https://doi.org/10.1016/j.jad.2019.02.051
Iñiguez SD, Riggs LM, Nieto SJ, Wright KN, Zamora NN, Cruz B, Zavala AR, Robison AJ et al (2015) Fluoxetine exposure during adolescence increases preference for cocaine in adulthood. Sci Rep 5:15009. https://doi.org/10.1038/srep15009
Flores-Ramirez FJ, Garcia-Carachure I, Sanchez DO, Gonzalez C, Castillo SA, Arenivar MA, Themann A, Lira O et al (2018) Fluoxetine exposure in adolescent and adult female mice decreases cocaine and sucrose preference later in life. J Psychopharmacol 269881118805488. https://doi.org/10.1177/0269881118805488
Iñiguez SD, Warren BL, Bolaños-Guzmán CA (2010) Short- and long-term functional consequences of fluoxetine exposure during adolescence in male rats. Biol Psychiatry 67(11):1057–1066. https://doi.org/10.1016/j.biopsych.2009.12.033
Iñiguez SD, Alcantara LF, Warren BL, Riggs LM, Parise EM, Vialou V, Wright KN, Dayrit G et al (2014) Fluoxetine exposure during adolescence alters responses to aversive stimuli in adulthood. J Neurosci 34(3):1007–1021. https://doi.org/10.1523/JNEUROSCI.5725-12.2014
Karpova NN, Lindholm J, Pruunsild P, Timmusk T, Castren E (2009) Long-lasting behavioural and molecular alterations induced by early postnatal fluoxetine exposure are restored by chronic fluoxetine treatment in adult mice. Eur Neuropsychopharmacol 19(2):97–108. https://doi.org/10.1016/j.euroneuro.2008.09.002
Airan RD, Meltzer LA, Roy M, Gong Y, Chen H, Deisseroth K (2007) High-speed imaging reveals neurophysiological links to behavior in an animal model of depression. Science 317(5839):819–823. https://doi.org/10.1126/science.1144400
Trivedi MH, Fava M, Wisniewski SR, Thase ME, Quitkin F, Warden D, Ritz L, Nierenberg AA et al (2006) Medication augmentation after the failure of SSRIs for depression. N Engl J Med 354(12):1243–1252. https://doi.org/10.1056/NEJMoa052964
Kroeze Y, Peeters D, Boulle F, Pawluski JL, van den Hove DL, van Bokhoven H, Zhou H, Homberg JR (2015) Long-term consequences of chronic fluoxetine exposure on the expression of myelination-related genes in the rat hippocampus. Transl Psychiatry 5:e642. https://doi.org/10.1038/tp.2015.145
Duman RS, Monteggia LM (2006) A neurotrophic model for stress-related mood disorders. Biol Psychiatry 59(12):1116–1127
Freitas AE, Machado DG, Budni J, Neis VB, Balen GO, Lopes MW, de Souza LF, Dafre AL et al (2013) Fluoxetine modulates hippocampal cell signaling pathways implicated in neuroplasticity in olfactory bulbectomized mice. Behav Brain Res 237:176–184. https://doi.org/10.1016/j.bbr.2012.09.035
Bjorkholm C, Monteggia LM (2016) BDNF - a key transducer of antidepressant effects. Neuropharmacology 102:72–79. https://doi.org/10.1016/j.neuropharm.2015.10.034
Zhou WJ, Xu N, Kong L, Sun SC, Xu XF, Jia MZ, Wang Y, Chen ZY (2016) The antidepressant roles of Wnt2 and Wnt3 in stress-induced depression-like behaviors. Transl Psychiatry 6(9):e892. https://doi.org/10.1038/tp.2016.122
Cha J, Greenberg T, Song I, Blair Simpson H, Posner J, Mujica-Parodi LR (2016) Abnormal hippocampal structure and function in clinical anxiety and comorbid depression. Hippocampus 26(5):545–553. https://doi.org/10.1002/hipo.22566
Persson A, Sim SC, Virding S, Onishchenko N, Schulte G, Ingelman-Sundberg M (2014) Decreased hippocampal volume and increased anxiety in a transgenic mouse model expressing the human CYP2C19 gene. Mol Psychiatry 19(6):733–741. https://doi.org/10.1038/mp.2013.89
Meyers RA, Zavala AR, Speer CM, Neisewander JL (2006) Dorsal hippocampus inhibition disrupts acquisition and expression, but not consolidation, of cocaine conditioned place preference. Behav Neurosci 120(2):401–412. https://doi.org/10.1037/0735-7044.120.2.401
Hitchcock LN, Lattal KM (2018) Involvement of the dorsal hippocampus in expression and extinction of cocaine-induced conditioned place preference. Hippocampus 28(3):226–238. https://doi.org/10.1002/hipo.22826
Dale E, Pehrson AL, Jeyarajah T, Li Y, Leiser SC, Smagin G, Olsen CK, Sanchez C (2016) Effects of serotonin in the hippocampus: how SSRIs and multimodal antidepressants might regulate pyramidal cell function. CNS Spectr 21(2):143–161. https://doi.org/10.1017/S1092852915000425
Duric V, Banasr M, Licznerski P, Schmidt HD, Stockmeier CA, Simen AA, Newton SS, Duman RS (2010) A negative regulator of MAP kinase causes depressive behavior. Nat Med 16(11):1328–1332. https://doi.org/10.1038/nm.2219
Council NR (2003) Guidelines for the care and use of mammals in neuroscience and behavioral research. National Academy Press, Washington
Andersen SL (2003) Trajectories of brain development: point of vulnerability or window of opportunity? Neurosci Biobehav Rev 27(1-2):3–18. https://doi.org/10.1016/s0149-7634(03)00005-8
Abreu-Villaca Y, Filgueiras CC, Guthierrez M, Medeiros AH, Mattos MA, Pereira Mdos S, Manhaes AC, Kubrusly RC (2010) Exposure to tobacco smoke containing either high or low levels of nicotine during adolescence: differential effects on choline uptake in the cerebral cortex and hippocampus. Nicotine Tob Res 12(7):776–780. https://doi.org/10.1093/ntq075
Englander MT, Dulawa SC, Bhansali P, Schmauss C (2005) How stress and fluoxetine modulate serotonin 2C receptor pre-mRNA editing. J Neurosci 25(3):648–651
LaPlant Q, Vialou V, Covington HE 3rd, Dumitriu D, Feng J, Warren BL, Maze I, Dietz DM et al (2010) Dnmt3a regulates emotional behavior and spine plasticity in the nucleus accumbens. Nat Neurosci 13(9):1137–1143. https://doi.org/10.1038/nn.2619
Surget A, Tanti A, Leonardo ED, Laugeray A, Rainer Q, Touma C, Palme R, Griebel G et al (2011) Antidepressants recruit new neurons to improve stress response regulation. Mol Psychiatry 16(12):1177–1188. https://doi.org/10.1038/mp.2011.48
Iñiguez SD, Charntikov S, Baella SA, Herbert MS, Bolaños-Guzmán CA, Crawford CA (2012) Post-training cocaine exposure facilitates spatial memory consolidation in c57bl/6 mice. Hippocampus 22(4):802–813. https://doi.org/10.1002/hipo.20941
Vialou V, Robison AJ, Laplant QC, Covington HE 3rd, Dietz DM, Ohnishi YN, Mouzon E, Rush AJ 3rd et al (2010) DeltaFosB in brain reward circuits mediates resilience to stress and antidepressant responses. Nat Neurosci 13(6):745–752. https://doi.org/10.1038/nn.2551
Meyers RA, Zavala AR, Neisewander JL (2003) Dorsal, but not ventral, hippocampal lesions disrupt cocaine place conditioning. Neuroreport 14(16):2127–2131. https://doi.org/10.1097/01.wnr.0000095709.83808.81
Castren E, Rantamaki T (2010) The role of BDNF and its receptors in depression and antidepressant drug action: reactivation of developmental plasticity. Dev Neurobiol 70(5):289–297. https://doi.org/10.1002/dneu.20758
Autry AE, Monteggia LM (2012) Brain-derived neurotrophic factor and neuropsychiatric disorders. Pharmacol Rev 64(2):238–258. https://doi.org/10.1124/pr.111.005108
Warren BL, Iñiguez SD, Alcantara LF, Wright KN, Parise EM, Weakley SK, Bolanos-Guzman CA (2011) Juvenile administration of concomitant methylphenidate and fluoxetine alters behavioral reactivity to reward- and mood-related stimuli and disrupts ventral tegmental area gene expression in adulthood. J Neurosci 31(28):10347–10358. https://doi.org/10.1523/JNEUROSCI.1470-11.2011
Yan L, Xu X, He Z, Wang S, Zhao L, Qiu J, Wang D, Gong Z et al (2020) Antidepressant-like effects and cognitive enhancement of coadministration of Chaihu Shugan San and fluoxetine: dependent on the BDNF-ERK-CREB signaling pathway in the hippocampus and frontal cortex. Biomed Res Int 2020:2794263. https://doi.org/10.1155/2020/2794263
Homberg JR, Olivier JD, Blom T, Arentsen T, van Brunschot C, Schipper P, Korte-Bouws G, van Luijtelaar G et al (2011) Fluoxetine exerts age-dependent effects on behavior and amygdala neuroplasticity in the rat. PLoS One 6(1):e16646. https://doi.org/10.1371/journal.pone.0016646
Tropea TF, Kosofsky BE, Rajadhyaksha AM (2008) Enhanced CREB and DARPP-32 phosphorylation in the nucleus accumbens and CREB, ERK, and GluR1 phosphorylation in the dorsal hippocampus is associated with cocaine-conditioned place preference behavior. J Neurochem 106(4):1780–1790. https://doi.org/10.1111/j.1471-4159.2008.05518.x
Hearing MC, Schochet TL, See RE, McGinty JF (2010) Context-driven cocaine-seeking in abstinent rats increases activity-regulated gene expression in the basolateral amygdala and dorsal hippocampus differentially following short and long periods of abstinence. Neuroscience 170(2):570–579. https://doi.org/10.1016/j.neuroscience.2010.07.027
Gajewski PA, Eagle AL, Williams ES, Manning CE, Lynch H, McCornack C, Maze I, Heller EA et al (2019) Epigenetic regulation of hippocampal Fosb expression controls behavioral responses to cocaine. J Neurosci 39(42):8305–8314. https://doi.org/10.1523/JNEUROSCI.0800-19.2019
Fosnocht AQ, Lucerne KE, Ellis AS, Olimpo NA, Briand LA (2019) Adolescent social isolation increases cocaine seeking in male and female mice. Behav Brain Res 359:589–596. https://doi.org/10.1016/j.bbr.2018.10.007
McLaughlin JP, Li S, Valdez J, Chavkin TA, Chavkin C (2006) Social defeat stress-induced behavioral responses are mediated by the endogenous kappa opioid system. Neuropsychopharmacology 31(6):1241–1248. https://doi.org/10.1038/sj.npp.1300872
Iñiguez SD, Parise LF, Lobo MK, Flores-Ramirez FJ, Garcia-Carachure I, Warren BL, Robison AJ (2019) Upregulation of hippocampal extracellular signal-regulated kinase (ERK)-2 induces antidepressant-like behavior in the rat forced swim test. Behav Neurosci 133(2):225–231. https://doi.org/10.1037/bne0000303
Martin ED, Sanchez-Perez A, Trejo JL, Martin-Aldana JA, Cano Jaimez M, Pons S, Acosta Umanzor C, Menes L et al (2012) IRS-2 Deficiency impairs NMDA receptor-dependent long-term potentiation. Cereb Cortex 22(8):1717–1727. https://doi.org/10.1093/cercor/bhr216
Russo SJ, Bolaños CA, Theobald DE, DeCarolis NA, Renthal W, Kumar A, Winstanley CA, Renthal NE et al (2007) IRS2-Akt pathway in midbrain dopamine neurons regulates behavioral and cellular responses to opiates. Nat Neurosci 10(1):93–99. https://doi.org/10.1038/nn1812
Iñiguez SD, Warren BL, Neve RL, Nestler EJ, Russo SJ, Bolaños-Guzmán CA (2008) Insulin receptor substrate-2 in the ventral tegmental area regulates behavioral responses to cocaine. Behav Neurosci 122(5):1172–1177. https://doi.org/10.1037/a0012893
Glombik K, Slusarczyk J, Trojan E, Chamera K, Budziszewska B, Lason W, Basta-Kaim A (2017) Regulation of insulin receptor phosphorylation in the brains of prenatally stressed rats: new insight into the benefits of antidepressant drug treatment. Eur Neuropsychopharmacol 27(2):120–131. https://doi.org/10.1016/j.euroneuro.2016.12.005
Krishnan V, Han MH, Mazei-Robison M, Iñiguez SD, Ables JL, Vialou V, Berton O, Ghose S et al (2008) AKT signaling within the ventral tegmental area regulates cellular and behavioral responses to stressful stimuli. Biol Psychiatry 64(8):691–700. https://doi.org/10.1016/j.biopsych.2008.06.003
Wilkinson MB, Dias C, Magida J, Mazei-Robison M, Lobo M, Kennedy P, Dietz D, Covington H 3rd et al (2011) A novel role of the WNT-dishevelled-GSK3beta signaling cascade in the mouse nucleus accumbens in a social defeat model of depression. J Neurosci 31(25):9084–9092. https://doi.org/10.1523/JNEUROSCI.0039-11.2011
Dias C, Dietz D, Mazei-Robison M, Sun H, Damez-Werno D, Ferguson D, Wilkinson M, Magida J et al (2015) Dishevelled-2 regulates cocaine-induced structural plasticity and Rac1 activity in the nucleus accumbens. Neurosci Lett 598:23–28. https://doi.org/10.1016/j.neulet.2015.05.003
Abdolmaleki F, Ahmadpour-Yazdi H, Hayat SMG, Gheibi N, Johnston TP, Sahebkar A (2020) Wnt network: a brief review of pathways and multifunctional components. Crit Rev Eukaryot Gene Expr 30(1):1–18. https://doi.org/10.1615/CritRevEukaryotGeneExpr.2019025774
Gonzalez-Reyes LE, Chiang CC, Zhang M, Johnson J, Arrillaga-Tamez M, Couturier NH, Reddy N, Starikov L et al (2019) Sonic Hedgehog is expressed by hilar mossy cells and regulates cellular survival and neurogenesis in the adult hippocampus. Sci Rep 9(1):17402. https://doi.org/10.1038/s41598-019-53192-4
Troy CM, Friedman JE, Friedman WJ (2002) Mechanisms of p75-mediated death of hippocampal neurons. Role of caspases. J Biol Chem 277(37):34295–34302. https://doi.org/10.1074/jbc.M205167200
Chung L (2015) A brief introduction to the transduction of neural activity into Fos signal. Dev Reprod 19(2):61–67. https://doi.org/10.12717/DR.2015.19.2.061
Angenstein F, Matthies H Jr, Staeck S, Reymann KG, Staak S (1992) The maintenance of hippocampal long-term potentiation is paralleled by a dopamine-dependent increase in glycoprotein fucosylation. Neurochem Int 21(3):403–408. https://doi.org/10.1016/0197-0186(92)90191-s
Popov N, Schmidt S, Schulzeck S, Jork R, Lossner B, Matthies H (1983) Changes in activities of fucokinase and fucosyltransferase in rat hippocampus after acquisition of a brightness discrimination reaction. Pharmacol Biochem Behav 19(1):43–47. https://doi.org/10.1016/0091-3057(83)90309-x
Gao YJ, Ji RR (2009) c-Fos and pERK, which is a better marker for neuronal activation and central sensitization after noxious stimulation and tissue injury? Open Pain J 2:11–17. https://doi.org/10.2174/1876386300902010011
Sántha P, Pákáski M, Fazekas OC, Fodor EK, Kálmán S, Kálmán J Jr, Janka Z, Szabó G et al (2012) Restraint stress in rats alters gene transcription and protein translation in the hippocampus. Neurochem Res 37(5):958–964. https://doi.org/10.1007/s11064-011-0688-7
Zhang X, Chen Y, Jenkins LW, Kochanek PM, Clark RSB (2005) Bench-to-bedside review: Apoptosis/programmed cell death triggered by traumatic brain injury. Crit Care 9(1):66–75. https://doi.org/10.1186/cc2950
He J, Yamada K, Nabeshima T (2002) A role of Fos expression in the CA3 region of the hippocampus in spatial memory formation in rats. Neuropsychopharmacology 26(2):259–268. https://doi.org/10.1016/SO893-133X(01)00332-3
Varela-Nallar L, Inestrosa NC (2013) Wnt signaling in the regulation of adult hippocampal neurogenesis. Front Cell Neurosci 7:100. https://doi.org/10.3389/fncel.2013.00100
Cowen DS (2007) Serotonin and neuronal growth factors - a convergence of signaling pathways. J Neurochem 101(5):1161–1171. https://doi.org/10.1111/j.1471-4159.2006.04420.x
Hoffmann F, Glaeske G, Bachmann CJ (2014) Trends in antidepressant prescriptions for children and adolescents in Germany from 2005 to 2012. Pharmacoepidemiol Drug Saf 23(12):1268–1272. https://doi.org/10.1002/pds.3649
Warren BL, Mazei-Robison M, Robison AJ, Iñiguez SD (2020) Can I get a witness? Using vicarious defeat stress to study mood-related illnesses in traditionally understudied populations. Biol Psychiatry 88(5):381–391. https://doi.org/10.1016/j.biopsych.2020.02.004
Iñiguez SD, Riggs LM, Nieto SJ, Dayrit G, Zamora NN, Shawhan KL, Cruz B, Warren BL (2014) Social defeat stress induces a depression-like phenotype in adolescent male c57BL/6 mice. Stress 17(3):247–255. https://doi.org/10.3109/10253890.2014.910650
Duque-Wilckens N, Torres LY, Yokoyama S, Minie VA, Tran AM, Petkova SP, Hao R, Ramos-Maciel S et al (2020) Extrahypothalamic oxytocin neurons drive stress-induced social vigilance and avoidance. PNAS. https://doi.org/10.1073/pnas.2011890117
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The authors thank Jorge A. Sierra-Fonseca for suggestions on earlier versions of this manuscript.
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SDI acknowledges the support from the National Institute of General Medical Sciences (SC2GM109811 and SC3GM130467).
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SDI conceived and directed the project, analyzed data, interpreted results, and wrote the manuscript. FJF-R, AT, and OL assisted with all experiments, analyzed data, and co-wrote the manuscript. All authors reviewed and edited the manuscript.
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Iñiguez, S.D., Flores-Ramirez, F.J., Themann, A. et al. Adolescent Fluoxetine Exposure Induces Persistent Gene Expression Changes in the Hippocampus of Adult Male C57BL/6 Mice. Mol Neurobiol 58, 1683–1694 (2021). https://doi.org/10.1007/s12035-020-02221-9
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DOI: https://doi.org/10.1007/s12035-020-02221-9