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Xu Y, Kappen M, Peremans K, De Bundel D, Van Eeckhaut A, Van Laeken N, De Vos F, Dobbeleir A, Saunders JH, Baeken C. Accelerated HF-rTMS Modifies SERT Availability in the Subgenual Anterior Cingulate Cortex: A Canine [ 11C]DASB Study on the Serotonergic System. J Clin Med 2022; 11:jcm11061531. [PMID: 35329857 PMCID: PMC8950510 DOI: 10.3390/jcm11061531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/04/2022] [Accepted: 03/08/2022] [Indexed: 02/04/2023] Open
Abstract
Repetitive transcranial magnetic stimulation (rTMS) is thought to partly exert its antidepressant action through the serotonergic system. Accelerated rTMS may have the potential to result in similar but faster onset of clinical improvement compared to the classical daily rTMS protocols, but given that delayed clinical responses have been reported, the neurobiological effects of accelerated paradigms remain to be elucidated including on this neurotransmitter system. This sham-controlled study aimed to evaluate the effects of accelerated high frequency rTMS (aHF-rTMS) over the left frontal cortex on the serotonin transporter (SERT) in healthy beagle dogs. A total of twenty-two dogs were randomly divided into three unequal groups: five active stimulation sessions (five sessions in one day, n = 10), 20 active stimulation sessions (five sessions/day for four days, n = 8), and 20 sham stimulation sessions (five sessions/day for four days, n = 4). The SERT binding index (BI) was obtained at baseline, 24 h post stimulation protocol, one month, and three months post stimulation by a [11C]DASB PET scan. It was found that one day of active aHF-rTMS (five sessions) did not result in significant SERT BI changes at any time point. For the 20 sessions of active aHF-rTMS, one month after stimulation the SERT BI attenuated in the sgACC. No significant SERT BI changes were found after 20 sessions of sham aHF-rTMS. A total of four days of active aHF-rTMS modified sgACC SERT BI one month post-stimulation, explaining to some extent the delayed clinical effects of accelerated rTMS paradigms found in human psychopathologies.
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Affiliation(s)
- Yangfeng Xu
- Department of Psychiatry and Medical Psychology, Ghent Experimental Psychiatry (GHEP) Lab, Ghent University, 9000 Ghent, Belgium; (M.K.); (C.B.)
- Department of Veterinary Medical Imaging and Small Animal Othopaedics, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium; (K.P.); (A.D.); (J.H.S.)
- Correspondence:
| | - Mitchel Kappen
- Department of Psychiatry and Medical Psychology, Ghent Experimental Psychiatry (GHEP) Lab, Ghent University, 9000 Ghent, Belgium; (M.K.); (C.B.)
| | - Kathelijne Peremans
- Department of Veterinary Medical Imaging and Small Animal Othopaedics, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium; (K.P.); (A.D.); (J.H.S.)
| | - Dimitri De Bundel
- Department of Pharmaceutical Chemistry, Drug Analysis and Drug Information (FASC), Research Group Experimental Pharmacology (EFAR), Center for Neurosciences (C4N), Vrije Universiteit Brussel, 1000 Brussels, Belgium; (D.D.B.); (A.V.E.)
| | - Ann Van Eeckhaut
- Department of Pharmaceutical Chemistry, Drug Analysis and Drug Information (FASC), Research Group Experimental Pharmacology (EFAR), Center for Neurosciences (C4N), Vrije Universiteit Brussel, 1000 Brussels, Belgium; (D.D.B.); (A.V.E.)
| | - Nick Van Laeken
- Laboratory of Radiopharmacy, Department of Pharmaceutical Analysis, Faculty of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium; (N.V.L.); (F.D.V.)
| | - Filip De Vos
- Laboratory of Radiopharmacy, Department of Pharmaceutical Analysis, Faculty of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium; (N.V.L.); (F.D.V.)
| | - Andre Dobbeleir
- Department of Veterinary Medical Imaging and Small Animal Othopaedics, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium; (K.P.); (A.D.); (J.H.S.)
| | - Jimmy H. Saunders
- Department of Veterinary Medical Imaging and Small Animal Othopaedics, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium; (K.P.); (A.D.); (J.H.S.)
| | - Chris Baeken
- Department of Psychiatry and Medical Psychology, Ghent Experimental Psychiatry (GHEP) Lab, Ghent University, 9000 Ghent, Belgium; (M.K.); (C.B.)
- Department of Psychiatry, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZBrussel), 1000 Brussels, Belgium
- Department of Electrical Engineering, Eindhoven University of Technology, 5612 Eindhoven, The Netherlands
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Kautto M, Kampman O, Mononen N, Lehtimäki T, Haraldsson S, Koivisto PA, Leinonen E. Serotonin transporter (5-HTTLPR) and norepinephrine transporter (NET) gene polymorphisms: susceptibility and treatment response of electroconvulsive therapy in treatment resistant depression. Neurosci Lett 2015; 590:116-20. [PMID: 25650523 DOI: 10.1016/j.neulet.2015.01.077] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 01/23/2015] [Accepted: 01/29/2015] [Indexed: 01/14/2023]
Abstract
Serotonin transporter (5-HTTLPR) and norepinephrine transporter (NET182C) polymorphisms are associated with susceptibility and treatment response in major depressive disorder (MDD). Thus, we examined association between these polymorphisms and susceptibility to treatment resistant depression, and treatment response in severe MDD patients treated with electroconvulsive therapy (ECT). In total, 119 Finnish patients with treatment resistant depression and 395 healthy volunteer blood donors were genotyped. Depression severity was assessed using the Montgomery-Åsberg Depression Scale (MADRS), with MADRS score change during ECT the treatment response indicator. Underrepresentation of the 5-HTTLPR l/l genotype in the NET TT subgroup was observed in patients compared with controls. There were no genotype or allele frequency differences between patients and control groups separately. Patients with combined 5-HTTLPR l/l and NET TT genotypes also had poorer treatment responses than other patients. No differences in ECT response were observed when the polymorphisms were examined separately. Our results suggest that a NET 182C and 5-HTTLPR polymorphism interaction is associated with susceptibility to treatment resistant depression and ECT treatment response in antidepressant resistant depression patients.
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Affiliation(s)
- Mervi Kautto
- University of Tampere, School of Medicine, 33014 Tampere, Finland.
| | - Olli Kampman
- University of Tampere, School of Medicine, 33014 Tampere, Finland; Seinäjoki Hospital District, Department of Psychiatry, Seinäjoki, Finland
| | - Nina Mononen
- Department of Clinical Chemistry, Pirkanmaa Hospital District, Fimlab Laboratories, University of Tampere, School of Medicine, Tampere, Finland
| | - Terho Lehtimäki
- Department of Clinical Chemistry, Pirkanmaa Hospital District, Fimlab Laboratories, University of Tampere, School of Medicine, Tampere, Finland
| | - Susann Haraldsson
- Division of Medical and Clinical Genetics, Department of Medical Biosciences, Umea° University, Umea°, Sweden
| | - Pasi A Koivisto
- Laboratory of Molecular Genetics, Tampere University Hospital, Tampere, Finland
| | - Esa Leinonen
- University of Tampere, School of Medicine, 33014 Tampere, Finland; Tampere University Hospital, Department of Psychiatry, Tampere, Finland
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Zhang J, Fan Y, Li Y, Zhu H, Wang L, Zhu MY. Chronic social defeat up-regulates expression of the serotonin transporter in rat dorsal raphe nucleus and projection regions in a glucocorticoid-dependent manner. J Neurochem 2012; 123:1054-68. [PMID: 23061525 DOI: 10.1111/jnc.12055] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 09/27/2012] [Accepted: 10/02/2012] [Indexed: 01/10/2023]
Abstract
Chronic stress and dysfunction of the serotonergic system in the brain have been considered two of the major risks for development of depression. In this study, adult Fischer 344 rats were subjected to a regimen of chronic social defeat (CSD). To mimic stressful conditions, some rats were not exposed to CSD, but instead treated with corticosterone (CORT) in oral solution while maintained in their home cage. Protein levels of the serotonin transporter (SERT) in the dorsal raphe nucleus (DRN), hippocampus, frontal cortex, and amygdala were examined by Western blotting or immunofluorescence staining. The results showed that CSD up-regulated SERT protein levels in the DRN, hippocampus, frontal cortex, and amygdala regions. This up-regulation was abolished or prevented by adrenalectomy, or treatment with antagonists of corticosteroid receptors mifepristone and spironolactone, alone or in combination. Similarly, up-regulated SERT protein levels in these brain regions were also observed in rats treated with oral CORT ingestion, which was analogously prevented by treatment with mifepristone and spironolactone. Furthermore, both CSD- and CORT-induced up-regulation of SERT protein levels in the DRN and three brain regions were attenuated by simultaneous treatment with fluoxetine, an antidepressant that specifically inhibits serotonin reuptake. The results indicate that up-regulation in SERT protein levels in the DRN and forebrain limbic structures caused by CSD regimen was mainly motivated by CORT through corticosteroid receptors. The present findings demonstrate that chronic stress is closely correlated with the serotonergic system by acting on the regulation of the SERT expression in the DRN and its projection regions, which may contribute to the development of depression.
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Affiliation(s)
- Jia Zhang
- Departments of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee 37604, USA
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Gardner KL, Hale MW, Lightman SL, Plotsky PM, Lowry CA. Adverse early life experience and social stress during adulthood interact to increase serotonin transporter mRNA expression. Brain Res 2009; 1305:47-63. [PMID: 19781533 PMCID: PMC2788613 DOI: 10.1016/j.brainres.2009.09.065] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2009] [Revised: 09/16/2009] [Accepted: 09/16/2009] [Indexed: 10/20/2022]
Abstract
Anxiety disorders, depression and animal models of vulnerability to a depression-like syndrome have been associated with dysregulation of serotonergic systems in the brain. To evaluate the effects of early life experience, adverse experiences during adulthood, and potential interactions between these factors on serotonin transporter (slc6a4) mRNA expression, we investigated in rats the effects of maternal separation (180 min/day from days 2 to 14 of life; MS180), neonatal handing (15 min/day from days 2 to 14 of life; MS15), or normal animal facility rearing (AFR) control conditions with or without subsequent exposure to adult social defeat on slc6a4 mRNA expression in the dorsal raphe nucleus (DR) and caudal linear nucleus. At the level of specific subdivisions of the DR, there were no differences in slc6a4 mRNA expression between MS15 and AFR rats. Among rats exposed to a novel cage control condition, increased slc6a4 mRNA expression was observed in the dorsal part of the DR in MS180 rats, relative to AFR control rats. In contrast, MS180 rats exposed to social defeat as adults had increased slc6a4 mRNA expression throughout the DR compared to both MS15 and AFR controls. Social defeat increased slc6a4 mRNA expression, but only in MS180 rats and only in the "lateral wings" of the DR. Overall these data demonstrate that early life experience and stressful experience during adulthood interact to determine slc6a4 mRNA expression. These data support the hypothesis that early life experience and major stressful life events contribute to dysregulation of serotonergic systems in stress-related neuropsychiatric disorders.
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Affiliation(s)
- Katherine L. Gardner
- Henry Wellcome Laboratories for Integrative Neuroscience and Endocrinology, University of Bristol, Bristol, UK
| | - Matthew W. Hale
- Department of Integrative Physiology, University of Colorado at Boulder, Boulder, CO, USA
| | - Stafford L. Lightman
- Henry Wellcome Laboratories for Integrative Neuroscience and Endocrinology, University of Bristol, Bristol, UK
| | - Paul M. Plotsky
- Department of Psychiatry and Behavioral Sciences, Emory School of Medicine, Atlanta, GA, USA
| | - Christopher A. Lowry
- Henry Wellcome Laboratories for Integrative Neuroscience and Endocrinology, University of Bristol, Bristol, UK
- Department of Integrative Physiology, University of Colorado at Boulder, Boulder, CO, USA
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TPH2 polymorphisms may modify clinical picture in treatment-resistant depression. Neurosci Lett 2009; 464:43-6. [DOI: 10.1016/j.neulet.2009.08.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2009] [Revised: 08/05/2009] [Accepted: 08/06/2009] [Indexed: 01/20/2023]
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DARPP-32 expression in rat brain after electroconvulsive stimulation. Brain Res 2007; 1179:35-41. [DOI: 10.1016/j.brainres.2007.08.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2006] [Revised: 08/16/2007] [Accepted: 08/17/2007] [Indexed: 11/23/2022]
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Lang UE, Hellweg R, Gallinat J. Association of BDNF serum concentrations with central serotonergic activity: evidence from auditory signal processing. Neuropsychopharmacology 2005; 30:1148-53. [PMID: 15668721 DOI: 10.1038/sj.npp.1300666] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Disturbances of serotonergic neurotransmission in the brain have been implicated in the pathogenesis and maintenance of several psychiatric disorders. According to recent preclinical and clinical studies, the loudness dependence of auditory evoked potentials (LD) is related to the central serotonergic neurotransmission in humans. As the serotonergic phenotype has been reported to be associated with brain-derived neurotrophic factor (BDNF), we studied whether BDNF serum concentrations are related to LD in 109 healthy human volunteers (62 male, 47 female, age: 42.5+/-13.1 years). Pearson correlation showed a significant negative correlation between the BDNF serum concentrations and the LD measured at Fz (r=-0.259, p=0.007) and a trend for the Cz electrode (r=-0.185, p=0.055). Although this association needs to be replicated, the results are in line with the assumption that low serum BDNF levels reflect low central serotonergic neurotransmission as indicated by a strong LD.
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Affiliation(s)
- Undine E Lang
- Department of Neurology, University of Tuebingen, Tuebingen, Germany
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Shen HW, Numachi Y, Yoshida S, Fujiyama K, Toda S, Awata S, Matsuoka H, Sato M. Electroconvulsive shock increases serotonin transporter in the rat frontal cortex. Neurosci Lett 2003; 341:170-2. [PMID: 12686393 DOI: 10.1016/s0304-3940(03)00178-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The antidepressive action of electroconvulsive shock (ECS) is thought to involve the alteration in serotonin (5-HT) neurotransmission, including the increase in 5-HT release and uptake. In our previous study, 5-HT transporter (5-HTT) mRNA expression was decreased after single and repetitive ECS in rat raphe nucleus. In the present study, we investigated the effects of single and repetitive ECS on the protein levels of 5-HTT in the frontal cortex, hippocampus and raphe nucleus of rat brain using quantitative Western blot analysis. Single ECS did not alter 5-HTT protein expression in any brain regions examined. Repetitive ECS stably increased 5-HTT protein in the frontal cortex, but not in the hippocampus and raphe nucleus. Because ECS is known to facilitate the release of neurotransmitters, our results suggest that the increased 5-HTT protein expression in the frontal cortex might be a compensatory change against the enhanced 5-HT release by ECS in presynaptic terminals.
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Affiliation(s)
- Hao wei Shen
- Division of Psychiatry, Tohoku University Graduate School of Medicine, 980-8574, Sendai, Japan
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