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Yan Y, Park DI, Horn A, Golub M, Turck CW, Golub M, W. Turck C. Delineation of biomarkers and molecular pathways of residual effects of fluoxetine treatment in juvenile rhesus monkeys by proteomic profiling. Zool Res 2023; 44:30-42. [PMID: 36266933 PMCID: PMC9841182 DOI: 10.24272/j.issn.2095-8137.2022.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Fluoxetine (Prozac™) is the only antidepressant approved by the US Food and Drug Administration (FDA) for the treatment of major depressive disorder (MDD) in children. Despite its considerable efficacy as a selective serotonin reuptake inhibitor, the possible long-term effects of fluoxetine on brain development in children are poorly understood. In the current study, we aimed to delineate molecular mechanisms and protein biomarkers in the brains of juvenile rhesus macaques (Macaca mulatta) one year after the discontinuation of fluoxetine treatment using proteomic and phosphoproteomic profiling. We identified several differences in protein expression and phosphorylation in the dorsolateral prefrontal cortex (DLPFC) and cingulate cortex (CC) that correlated with impulsivity in animals, suggesting that the GABAergic synapse pathway may be affected by fluoxetine treatment. Biomarkers in combination with the identified pathways contribute to a better understanding of the mechanisms underlying the chronic effects of fluoxetine after discontinuation in children.
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Affiliation(s)
- Yu Yan
- Proteomics and Biomarkers, Max Planck Institute of Psychiatry, Munich 80804, Germany
| | - Dong Ik Park
- Proteomics and Biomarkers, Max Planck Institute of Psychiatry, Munich 80804, Germany
| | - Anja Horn
- Ludwig-Maximilians-Universität, Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, Munich 80336, Germany
| | - Mari Golub
- Department of Environmental Toxicology, University of California, Davis, CA 95616, USA
| | - Christoph W. Turck
- Proteomics and Biomarkers, Max Planck Institute of Psychiatry, Munich 80804, Germany,E-mail:
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Pasquereau B, Drui G, Saga Y, Richard A, Millot M, Météreau E, Sgambato V, Tobler PN, Tremblay L. Selective serotonin reuptake inhibitor treatment retunes emotional valence in primate ventral striatum. Neuropsychopharmacology 2021; 46:2073-2082. [PMID: 33692476 PMCID: PMC8505611 DOI: 10.1038/s41386-021-00991-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/29/2021] [Accepted: 02/19/2021] [Indexed: 01/31/2023]
Abstract
Selective serotonin reuptake inhibitors (SSRIs) are widely used to treat psychiatric disorders with affective biases such as depression and anxiety. How SSRIs exert a beneficial action on emotions associated with life events is still unknown. Here we ask whether and how the effectiveness of the SSRI fluoxetine is underpinned by neural mechanisms in the ventral striatum. To address these issues, we studied the spiking activity of neurons in the ventral striatum of monkeys during an approach-avoidance task in which the valence assigned to sensory stimuli was manipulated. Neural responses to positive and negative events were measured before and during a 4-week treatment with fluoxetine. We conducted PET scans to confirm that fluoxetine binds within the ventral striatum at a therapeutic dose. In our monkeys, fluoxetine facilitated approach of rewards and avoidance of punishments. These beneficial effects were associated with changes in tonic and phasic activities of striatal neurons. Fluoxetine increased the spontaneous firing rate of striatal neurons and amplified the number of cells responding to rewards versus punishments, reflecting a drug-induced positive shift in the processing of emotionally valenced information. These findings reveal how SSRI treatment affects ventral striatum neurons encoding positive and negative valence and striatal signaling of emotional information. In addition to a key role in appetitive processing, our results shed light on the involvement of the ventral striatum in aversive processing. Together, the ventral striatum appears to play a central role in the action of SSRIs on emotion processing biases commonly observed in psychiatric disorders.
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Affiliation(s)
- Benjamin Pasquereau
- Institut des Sciences Cognitives Marc Jeannerod, UMR 5229, Centre National de la Recherche Scientifique, Bron Cedex, France. .,Université Claude Bernard Lyon 1, Villeurbanne, France.
| | - Guillaume Drui
- grid.465537.6Institut des Sciences Cognitives Marc Jeannerod, UMR 5229, Centre National de la Recherche Scientifique, Bron Cedex, France ,grid.7849.20000 0001 2150 7757Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Yosuke Saga
- grid.465537.6Institut des Sciences Cognitives Marc Jeannerod, UMR 5229, Centre National de la Recherche Scientifique, Bron Cedex, France ,grid.7849.20000 0001 2150 7757Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Augustin Richard
- grid.465537.6Institut des Sciences Cognitives Marc Jeannerod, UMR 5229, Centre National de la Recherche Scientifique, Bron Cedex, France ,grid.7849.20000 0001 2150 7757Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Mathilde Millot
- grid.465537.6Institut des Sciences Cognitives Marc Jeannerod, UMR 5229, Centre National de la Recherche Scientifique, Bron Cedex, France ,grid.7849.20000 0001 2150 7757Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Elise Météreau
- grid.465537.6Institut des Sciences Cognitives Marc Jeannerod, UMR 5229, Centre National de la Recherche Scientifique, Bron Cedex, France ,grid.7849.20000 0001 2150 7757Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Véronique Sgambato
- grid.465537.6Institut des Sciences Cognitives Marc Jeannerod, UMR 5229, Centre National de la Recherche Scientifique, Bron Cedex, France ,grid.7849.20000 0001 2150 7757Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Philippe N. Tobler
- grid.7400.30000 0004 1937 0650Laboratory for Social and Neural Systems Research, Department of Economics, University of Zurich, Zurich, Switzerland
| | - Léon Tremblay
- grid.465537.6Institut des Sciences Cognitives Marc Jeannerod, UMR 5229, Centre National de la Recherche Scientifique, Bron Cedex, France ,grid.7849.20000 0001 2150 7757Université Claude Bernard Lyon 1, Villeurbanne, France
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Tkachev A, Stekolshchikova E, Bobrovskiy DM, Anikanov N, Ogurtsova P, Park DI, Horn AKE, Petrova D, Khrameeva E, Golub MS, Turck CW, Khaitovich P. Long-Term Fluoxetine Administration Causes Substantial Lipidome Alteration of the Juvenile Macaque Brain. Int J Mol Sci 2021; 22:ijms22158089. [PMID: 34360852 PMCID: PMC8348031 DOI: 10.3390/ijms22158089] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/13/2021] [Accepted: 07/16/2021] [Indexed: 12/13/2022] Open
Abstract
Fluoxetine is an antidepressant commonly prescribed not only to adults but also to children for the treatment of depression, obsessive-compulsive disorder, and neurodevelopmental disorders. The adverse effects of the long-term treatment reported in some patients, especially in younger individuals, call for a detailed investigation of molecular alterations induced by fluoxetine treatment. Two-year fluoxetine administration to juvenile macaques revealed effects on impulsivity, sleep, social interaction, and peripheral metabolites. Here, we built upon this work by assessing residual effects of fluoxetine administration on the expression of genes and abundance of lipids and polar metabolites in the prelimbic cortex of 10 treated and 11 control macaques representing two monoamine oxidase A (MAOA) genotypes. Analysis of 8871 mRNA transcripts, 3608 lipids, and 1829 polar metabolites revealed substantial alterations of the brain lipid content, including significant abundance changes of 106 lipid features, accompanied by subtle changes in gene expression. Lipid alterations in the drug-treated animals were most evident for polyunsaturated fatty acids (PUFAs). A decrease in PUFAs levels was observed in all quantified lipid classes excluding sphingolipids, which do not usually contain PUFAs, suggesting systemic changes in fatty acid metabolism. Furthermore, the residual effect of the drug on lipid abundances was more pronounced in macaques carrying the MAOA-L genotype, mirroring reported behavioral effects of the treatment. We speculate that a decrease in PUFAs may be associated with adverse effects in depressive patients and could potentially account for the variation in individual response to fluoxetine in young people.
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Affiliation(s)
- Anna Tkachev
- V. Zelman Center for Neurobiology and Brain Restoration, Skolkovo Institute of Science and Technology, 121205 Moscow, Russia; (A.T.); (E.S.); (N.A.); (P.O.); (D.P.)
| | - Elena Stekolshchikova
- V. Zelman Center for Neurobiology and Brain Restoration, Skolkovo Institute of Science and Technology, 121205 Moscow, Russia; (A.T.); (E.S.); (N.A.); (P.O.); (D.P.)
| | - Daniil M. Bobrovskiy
- Faculty of Bioengineering and Bioinformatics, Moscow State University, 119234 Moscow, Russia;
| | - Nickolay Anikanov
- V. Zelman Center for Neurobiology and Brain Restoration, Skolkovo Institute of Science and Technology, 121205 Moscow, Russia; (A.T.); (E.S.); (N.A.); (P.O.); (D.P.)
| | - Polina Ogurtsova
- V. Zelman Center for Neurobiology and Brain Restoration, Skolkovo Institute of Science and Technology, 121205 Moscow, Russia; (A.T.); (E.S.); (N.A.); (P.O.); (D.P.)
| | - Dong Ik Park
- Proteomics and Biomarkers, Max Planck Institute of Psychiatry, 80804 Munich, Germany;
| | - Anja K. E. Horn
- Institute of Anatomy and Cell Biology, Ludwig-Maximilians University, 80336 Munich, Germany;
| | - Daria Petrova
- V. Zelman Center for Neurobiology and Brain Restoration, Skolkovo Institute of Science and Technology, 121205 Moscow, Russia; (A.T.); (E.S.); (N.A.); (P.O.); (D.P.)
| | - Ekaterina Khrameeva
- Center of Life Sciences, Skolkovo Institute of Science and Technology, 121205 Moscow, Russia
- Correspondence: (E.K.); (M.S.G.); (C.W.T.); (P.K.)
| | - Mari S. Golub
- California National Primate Research Center, University of California, Davis, CA 95616, USA
- Correspondence: (E.K.); (M.S.G.); (C.W.T.); (P.K.)
| | - Christoph W. Turck
- Proteomics and Biomarkers, Max Planck Institute of Psychiatry, 80804 Munich, Germany;
- Correspondence: (E.K.); (M.S.G.); (C.W.T.); (P.K.)
| | - Philipp Khaitovich
- V. Zelman Center for Neurobiology and Brain Restoration, Skolkovo Institute of Science and Technology, 121205 Moscow, Russia; (A.T.); (E.S.); (N.A.); (P.O.); (D.P.)
- Correspondence: (E.K.); (M.S.G.); (C.W.T.); (P.K.)
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Golub MS, Hogrefe CE, Campos LJ, Fox AS. Serotonin Transporter Binding Potentials in Brain of Juvenile Monkeys 1 Year After Discontinuation of a 2-Year Treatment With Fluoxetine. BIOLOGICAL PSYCHIATRY: COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2019; 4:948-955. [PMID: 31471184 DOI: 10.1016/j.bpsc.2019.06.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 06/20/2019] [Accepted: 06/24/2019] [Indexed: 11/27/2022]
Abstract
BACKGROUND The potential long-term effects of childhood fluoxetine therapy on brain serotonin systems were studied using a nonhuman primate model, the rhesus monkey. METHODS Juvenile male rhesus (1-4 years of age, corresponding to 4-11 years of age in children) were treated orally with fluoxetine (2 mg/kg) or vehicle daily for 2 years and removed from treatment during the third year. Each treatment group was assigned an equal number of subjects with low and high transcription polymorphisms of MAOA. One year after discontinuation of treatment, positron emission tomography scans were conducted (n = 8 treated monkeys, n = 8 control monkeys) using [11C]DASB to quantify serotonin transporter in 16 cortical and subcortical regions. RESULTS Fluoxetine-treated monkeys with MAOA low transcription polymorphism had significantly lower [11C]DASB binding potentials than control monkeys. This finding was seen throughout the brain but was strongest in prefrontal and cingulate cortices. The MAOA × fluoxetine interaction was enhanced by binding potentials that were nonsignificantly higher in monkeys with high transcription polymorphism. CONCLUSIONS Juvenile fluoxetine treatment has residual posttreatment effects on brain serotonin transporter that depend on MAOA genotype. MAOA genotype may be important to consider when treating children with fluoxetine.
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Affiliation(s)
- Mari S Golub
- California National Primate Research Center, University of California, Davis, California.
| | - Casey E Hogrefe
- California National Primate Research Center, University of California, Davis, California
| | - Lillian J Campos
- California National Primate Research Center, University of California, Davis, California
| | - Andrew S Fox
- California National Primate Research Center, University of California, Davis, California; Department of Psychology, University of California, Davis, Davis, California
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