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Vulpius GM, Köhler-Forsberg K, Ozenne B, Larsen SV, Nasser A, Svarer C, Gillings N, Keller SH, Jørgensen MB, Knudsen GM, Frokjaer VG. Stress Hormone Dynamics Are Coupled to Brain Serotonin 4 Receptor Availability in Unmedicated Patients With Major Depressive Disorder: A NeuroPharm Study. Int J Neuropsychopharmacol 2023; 26:639-648. [PMID: 37542733 PMCID: PMC10519814 DOI: 10.1093/ijnp/pyad041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 08/03/2023] [Indexed: 08/07/2023] Open
Abstract
BACKGROUND A prominent finding in major depressive disorder (MDD) is distorted stress hormone dynamics, which is regulated by serotonergic brain signaling. An interesting feature of the cerebral serotonin system is the serotonin 4 receptor (5-HT4R), which is lower in depressed relative to healthy individuals and also has been highlighted as a promising novel antidepressant target. Here, we test the novel hypothesis that brain 5-HT4R availability in untreated patients with MDD is correlated with cortisol dynamics, indexed by the cortisol awakening response (CAR). Further, we evaluate if CAR changes with antidepressant treatment, including a selective serotonin reuptake inhibitor, and if pretreatment CAR can predict treatment outcome. METHODS Sixty-six patients (76% women) with a moderate to severe depressive episode underwent positron emission tomography imaging with [11C]SB207145 for quantification of brain 5-HT4R binding using BPND as outcome. Serial home sampling of saliva in the first hour from awakening was performed to assess CAR before and after 8 weeks of antidepressant treatment. Treatment outcome was measured by change in Hamilton Depression Rating Scale 6 items. RESULTS In the unmedicated depressed state, prefrontal and anterior cingulate cortices 5-HT4R binding was positively associated with CAR. CAR remained unaltered after 8 weeks of antidepressant treatment, and pretreatment CAR did not significantly predict treatment outcome. CONCLUSIONS Our findings highlight a link between serotonergic disturbances in MDD and cortisol dynamics, which likely is involved in disease and treatment mechanisms. Further, our data support 5-HT4R agonism as a promising precision target in patients with MDD and disturbed stress hormone dynamics.
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Affiliation(s)
- Gunild M Vulpius
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Denmark
- Psychiatric Center Copenhagen, Denmark
| | - Kristin Köhler-Forsberg
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Denmark
- Psychiatric Center Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Denmark
| | - Brice Ozenne
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Denmark
- Department of Public Health, Section of Biostatistics, University of Copenhagen, Denmark
| | - Søren V Larsen
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Denmark
- Department of Clinical Medicine, University of Copenhagen, Denmark
| | - Arafat Nasser
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Denmark
| | - Claus Svarer
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Denmark
| | - Nic Gillings
- Department of Clinical Physiology and Nuclear Medicine, Copenhagen University Hospital Rigshospitalet, Denmark
| | - Sune H Keller
- Department of Clinical Physiology and Nuclear Medicine, Copenhagen University Hospital Rigshospitalet, Denmark
| | - Martin B Jørgensen
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Denmark
- Psychiatric Center Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Denmark
| | - Gitte M Knudsen
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Denmark
- Department of Clinical Medicine, University of Copenhagen, Denmark
| | - Vibe G Frokjaer
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Denmark
- Psychiatric Center Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Denmark
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2
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Köhler-Forsberg K, Dam VH, Ozenne B, Sankar A, Beliveau V, Landman EB, Larsen SV, Poulsen AS, Ip CT, Jørgensen A, Meyer M, Stenbæk DS, Eiberg HRL, Madsen J, Svarer C, Jørgensen MB, Frokjaer VG, Knudsen GM. Serotonin 4 Receptor Brain Binding in Major Depressive Disorder and Association With Memory Dysfunction. JAMA Psychiatry 2023; 80:296-304. [PMID: 36753296 PMCID: PMC9909578 DOI: 10.1001/jamapsychiatry.2022.4539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 11/05/2022] [Indexed: 02/09/2023]
Abstract
Importance The cerebral serotonin 4 (5-HT4) receptor is a promising novel target for treatment of major depressive disorder (MDD), and pharmacological stimulation of the 5-HT4 receptor has been associated with improved learning and memory in healthy individuals. Objective To map the neurobiological signatures of patients with untreated MDD compared with healthy controls and to examine the association between cerebral 5-HT4 receptor binding and cognitive functions in the depressed state. Design, Setting, and Participants This case-control study used baseline data from the NeuroPharm clinical depression trial in Denmark. Adult participants included antidepressant-free outpatients with a current moderate to severe depressive episode and healthy controls. All participants completed positron emission tomography (PET) scanning with [11C]SB207145 for quantification of brain 5-HT4 receptor binding, but only the patients underwent cognitive testing. Data analyses were performed from January 21, 2020, to April 22, 2022. Main Outcomes and Measures The main study outcome was the group difference in cerebral 5-HT4 receptor binding between patients with MDD and healthy controls. In addition, the association between 5-HT4 receptor binding and verbal memory performance in the patient group was tested. Other cognitive domains (working memory, reaction time, emotion recognition bias, and negative social emotions) were assessed as secondary outcomes. Results A total of 90 patients with untreated MDD (mean [SD] age, 27.1 [8.2] years; 64 women [71.1%]) and 91 healthy controls (mean [SD] age, 27.1 [8.0] years; 55 women [60.4%]) were included in the analysis. Patients with current MDD had significantly lower cerebral 5-HT4 receptor binding than healthy controls (-7.0%; 95% CI, -11.2 to -2.7; P = .002). In patients with MDD, there was a correlation between cerebral 5-HT4 receptor binding and verbal memory (r = 0.29; P = .02). Conclusions and Relevance Results of this study show that cerebral 5-HT4 receptor binding was lower in patients with MDD than in healthy controls and that the memory dysfunction in patients with MDD was associated with lower cerebral 5-HT4 receptor binding. The cerebral 5-HT4 receptor is a promising treatment target for memory dysfunction in patients with MDD.
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Affiliation(s)
- Kristin Köhler-Forsberg
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Psychiatric Center Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Vibeke H. Dam
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Brice Ozenne
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Department of Public Health, Section of Biostatistics, University of Copenhagen, Copenhagen, Denmark
| | - Anjali Sankar
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Vincent Beliveau
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Elizabeth B. Landman
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Søren V. Larsen
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Asbjørn S. Poulsen
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Cheng-Teng Ip
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Pharmacology, H. Lundbeck A/S, Valby, Denmark
| | - Anders Jørgensen
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Psychiatric Center Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Michal Meyer
- Center for Referral and Diagnostics, Mental Health Services, Capital Region of Denmark, Copenhagen, Denmark
| | - Dea S. Stenbæk
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Department of Psychology, University of Copenhagen, Copenhagen, Denmark
| | - Hans R. L. Eiberg
- Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Jacob Madsen
- Department of Clinical Physiology and Nuclear Medicine, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Claus Svarer
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Martin B. Jørgensen
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Psychiatric Center Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Vibe G. Frokjaer
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Psychiatric Center Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Gitte M. Knudsen
- Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
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de Cates AN, Wright LC, Martens MAG, Gibson D, Türkmen C, Filippini N, Cowen PJ, Harmer CJ, Murphy SE. Déjà-vu? Neural and behavioural effects of the 5-HT(4) receptor agonist, prucalopride, in a hippocampal-dependent memory task. Transl Psychiatry 2021; 11:497. [PMID: 34602607 DOI: 10.1038/s41398-021-01568-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 08/04/2021] [Accepted: 08/16/2021] [Indexed: 11/13/2022] Open
Abstract
Cognitive deficits commonly accompany psychiatric disorders but are often underrecognised, and difficult to treat. The 5-HT4 receptor is a promising potential treatment target for cognitive impairment because in animal studies 5-HT4 receptor agonists enhance hippocampal-dependent memory processes. To date, there has been little work translating these effects to humans. We tested whether short-term administration of the 5-HT4 partial agonist, prucalopride, modified behavioural and neural (fMRI) memory processing in 44 healthy human volunteers using an experimental medicine model. We found that participants who had received six days of prucalopride treatment were significantly better at recalling previously seen neutral images and distinguishing them from new images. At a neural level, prucalopride bilaterally increased hippocampal activity and activity in the right angular gyrus compared with placebo. Taken together, these findings demonstrate the potential of 5-HT4-receptor activation for cognitive enhancement in humans, and support the potential of this receptor as a treatment target for cognitive impairment.
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Larsen SV, Köhler‐Forsberg K, Dam VH, Poulsen AS, Svarer C, Jensen PS, Knudsen GM, Fisher PM, Ozenne B, Frokjaer VG. Oral contraceptives and the serotonin 4 receptor: a molecular brain imaging study in healthy women. Acta Psychiatr Scand 2020; 142:294-306. [PMID: 33314049 PMCID: PMC7586815 DOI: 10.1111/acps.13211] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/25/2020] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Sex steroid hormones potently shape brain functions, including those critical to maintain mental health such as serotonin signaling. Use of oral contraceptives (OCs) profoundly changes endogenous sex steroid hormone levels and dynamics. Recent register-based studies show that starting an OC is associated with increased risk of developing depression. Here, we investigate whether use of OCs in healthy women is associated with a marker of the serotonin system in terms of serotonin 4 receptor (5-HT4R) brain imaging. METHODS [11C]SB207145-PET imaging data on 53 healthy women, of whom 16 used OCs, were available from the Cimbi database. We evaluated global effects of OC use on 5-HT4R binding in a latent variable model based on 5-HT4R binding across cortical and subcortical regions. RESULTS We demonstrate that OC users have 9-12% lower global brain 5-HT4R binding potential compared to non-users. Univariate region-based analyses (pallidostriatum, caudate, hippocampus, amygdala, anterior cingulate cortex, and neocortex) supported the global effect of OC use with the largest difference present in the hippocampus (-12.8% (95% CI [-21.0; -3.9], Pcorrected = 0.03). CONCLUSION We show that women who use OCs have markedly lower brain 5-HT4R binding relative to non-users, which constitutes a plausible molecular link between OC use and increased risk of depressive episodes. We propose that this reflects a reduced 5-HT4R gene expression, possibly related to a blunted ovarian hormone state among OC users.
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Affiliation(s)
- S. V. Larsen
- Neurobiology Research UnitRigshospitaletCopenhagenDenmark
| | - K. Köhler‐Forsberg
- Neurobiology Research UnitRigshospitaletCopenhagenDenmark
- Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
- Mental health services in the Capital Region of DenmarkCopenhagenDenmark
| | - V. H. Dam
- Neurobiology Research UnitRigshospitaletCopenhagenDenmark
- Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - A. S. Poulsen
- Neurobiology Research UnitRigshospitaletCopenhagenDenmark
| | - C. Svarer
- Neurobiology Research UnitRigshospitaletCopenhagenDenmark
| | - P. S. Jensen
- Neurobiology Research UnitRigshospitaletCopenhagenDenmark
| | - G. M. Knudsen
- Neurobiology Research UnitRigshospitaletCopenhagenDenmark
- Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - P. M. Fisher
- Neurobiology Research UnitRigshospitaletCopenhagenDenmark
| | - B. Ozenne
- Neurobiology Research UnitRigshospitaletCopenhagenDenmark
- Department of Public HealthSection of BiostatisticsUniversity of CopenhagenCopenhagen KDenmark
| | - V. G. Frokjaer
- Neurobiology Research UnitRigshospitaletCopenhagenDenmark
- Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
- Mental health services in the Capital Region of DenmarkCopenhagenDenmark
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5
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Affiliation(s)
- Brice Ozenne
- Copenhagen University Hospital and University of Copenhagen Denmark
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6
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Agrawal L, Korkutata M, Vimal SK, Yadav MK, Bhattacharyya S, Shiga T. Therapeutic potential of serotonin 4 receptor for chronic depression and its associated comorbidity in the gut. Neuropharmacology 2020; 166:107969. [PMID: 31982703 DOI: 10.1016/j.neuropharm.2020.107969] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 01/14/2020] [Accepted: 01/16/2020] [Indexed: 12/19/2022]
Abstract
The latest estimates from world health organization suggest that more than 450 million people are suffering from depression and other psychiatric conditions. Of these, 50-60% have been reported to have progression of gut diseases. In the last two decades, researchers introduced incipient physiological roles for serotonin (5-HT) receptors (5-HTRs), suggesting their importance as a potential pharmacological target in various psychiatric and gut diseases. A growing body of evidence suggests that 5-HT systems affect the brain-gut axis in depressive patients, which leads to gut comorbidity. Recently, preclinical trials of 5-HT4R agonists and antagonists were promising as antipsychotic and prokinetic agents. In the current review, we address the possible pharmacological role and contribution of 5-HT4R in the pathophysiology of chronic depression and associated gut abnormalities. Physiologically, during depression episodes, centers of the sympathetic and parasympathetic nervous system couple together with neuroendocrine systems to alter the function of hypothalamic-pituitary-adrenal (HPA) axis and enteric nervous system (ENS), which in turn leads to onset of gastrointestinal tract (GIT) disorders. Consecutively, the ENS governs a broad spectrum of physiological activities of gut, such as visceral pain and motility. During the stages of emotional stress, hyperactivity of the HPA axis alters the ENS response to physiological and noxious stimuli. Consecutively, stress-induced flare, swelling, hyperalgesia and altered reflexes in gut eventually lead to GIT disorders. In summary, the current review provides prospective information about the role and mechanism of 5-HT4R-based therapeutics for the treatment of depressive disorder and possible consequences for the gut via brain-gut axis interactions. This article is part of the special issue entitled 'Serotonin Research: Crossing Scales and Boundaries'.
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Affiliation(s)
- Lokesh Agrawal
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1, 305-8577, Tennodai, Tsukuba, Ibaraki, Japan.
| | - Mustafa Korkutata
- Department of Neurology, Division of Sleep Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Sunil Kumar Vimal
- Department of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, PR China
| | - Manoj Kumar Yadav
- School of Integrative and Global Majors, University of Tsukuba, 1-1-1, 305-8577, Tennodai, Tsukuba, Ibaraki, Japan; Department of Anatomy and Embryology, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Sanjib Bhattacharyya
- Department of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, PR China
| | - Takashi Shiga
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1, 305-8577, Tennodai, Tsukuba, Ibaraki, Japan; Department of Neurobiology, Faculty of Medicine, University of Tsukuba,1-1-1, Tennodai, Tsukuba, 305-8577, Ibaraki, Japan.
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7
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Köhler-Forsberg K, Jorgensen A, Dam VH, Stenbæk DS, Fisher PM, Ip CT, Ganz M, Poulsen HE, Giraldi A, Ozenne B, Jørgensen MB, Knudsen GM, Frokjaer VG. Predicting Treatment Outcome in Major Depressive Disorder Using Serotonin 4 Receptor PET Brain Imaging, Functional MRI, Cognitive-, EEG-Based, and Peripheral Biomarkers: A NeuroPharm Open Label Clinical Trial Protocol. Front Psychiatry 2020; 11:641. [PMID: 32792991 PMCID: PMC7391965 DOI: 10.3389/fpsyt.2020.00641] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 06/19/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Between 30 and 50% of patients with major depressive disorder (MDD) do not respond sufficiently to antidepressant regimens. The conventional pharmacological treatments predominantly target serotonergic brain signaling but better tools to predict treatment response and identify relevant subgroups of MDD are needed to support individualized and mechanistically targeted treatment strategies. The aim of this study is to investigate antidepressant-free patients with MDD using neuroimaging, electrophysiological, molecular, cognitive, and clinical examinations and evaluate their ability to predict clinical response to SSRI treatment as individual or combined predictors. METHODS We will include 100 untreated patients with moderate to severe depression (>17 on the Hamilton Depression Rating Scale 17) in a non-randomized open clinical trial. We will collect data from serotonin 4 receptor positron emission tomography (PET) brain scans, functional magnetic resonance imaging (fMRI), electroencephalogram (EEG), cognitive tests, psychometry, and peripheral biomarkers, before (at baseline), during, and after 12 weeks of standard antidepressant treatment. Patients will be treated with escitalopram, and in case of non-response at week 4 or intolerable side effects, offered to switch to a second line treatment with duloxetine. Our primary outcome (treatment response) is assessed using the Hamilton depression rating subscale 6-item scores at week 8, compared to baseline. In a subset of the patients (n = ~40), we will re-assess the neurobiological response (using PET, fMRI, and EEG) 8 weeks after initiated pharmacological antidepressant treatment, to map neurobiological signatures of treatment responses. Data from matched controls will either be collected or is already available from other cohorts. DISCUSSION The extensive investigational program with follow-up in this large cohort of participants provides a unique possibility to (a) uncover potential biomarkers for antidepressant treatment response, (b) apply the findings for future stratification of MDD, (c) advance the understanding of pathophysiological underpinnings of MDD, and (d) uncover how putative biomarkers change in response to 8 weeks of pharmacological antidepressant treatment. Our data can pave the way for a precision medicine approach for optimized treatment of MDD and also provides a resource for future research and data sharing. CLINICAL TRIAL REGISTRATION The study was registered at clinicaltrials.gov prior to initiation (NCT02869035; 08.16.2016, URL: https://clinicaltrials.gov/ct2/results?cond=&term=NCT02869035&cntry=&state=&city=&dist=).
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Affiliation(s)
- Kristin Köhler-Forsberg
- Neurobiology Research Unit, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Psychiatry, Psychiatric Centre Copenhagen, Copenhagen, Denmark
| | - Anders Jorgensen
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Psychiatry, Psychiatric Centre Copenhagen, Copenhagen, Denmark
| | - Vibeke H Dam
- Neurobiology Research Unit, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.,Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Dea Siggaard Stenbæk
- Neurobiology Research Unit, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Patrick M Fisher
- Neurobiology Research Unit, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Cheng-Teng Ip
- Neurobiology Research Unit, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Clinical Pharmacology, H. Lundbeck A/S, Valby, Denmark
| | - Melanie Ganz
- Neurobiology Research Unit, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.,Department of Computer Science, University of Copenhagen, Copenhagen, Denmark
| | | | - Annamaria Giraldi
- Sexological Clinic, Psychiatric Center Copenhagen, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Brice Ozenne
- Neurobiology Research Unit, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.,Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Martin Balslev Jørgensen
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Psychiatry, Psychiatric Centre Copenhagen, Copenhagen, Denmark
| | - Gitte Moos Knudsen
- Neurobiology Research Unit, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Vibe Gedsoe Frokjaer
- Neurobiology Research Unit, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Psychiatry, Psychiatric Centre Copenhagen, Copenhagen, Denmark
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8
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Agrawal L, Vimal SK, Shiga T. Role of serotonin 4 receptor in the growth of hippocampal neurons during the embryonic development in mice. Neuropharmacology 2019; 158:107712. [PMID: 31325432 DOI: 10.1016/j.neuropharm.2019.107712] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 06/12/2019] [Accepted: 07/14/2019] [Indexed: 12/18/2022]
Abstract
Serotonin (5-HT) homeostasis is critical for the brain development which influences neurogenesis, neuronal migration, and circuit formation. Distinctive distribution patterns of serotonin receptors (5-HTRs) in the brain govern various physiological activities. Amongst the 5-HTRs, serotonin 4 receptor (5-HT4R) is widely expressed in embryonic forebrain and affects neuronal development, synaptogenesis, and behavior, but its specific role in brain development is still not completely understood. Therefore, in the present study, we addressed the roles of 5-HT4R in the growth of hippocampal neurons during the development of mice brain. We cultured hippocampal neurons of the mouse at embryonic day 18 and then treatment of 5-HT4R agonist RS67333 was employed. We found RS67333 significantly increased the axonal length, diameter and branching along with total dendritic length, number of primary dendrites and their branching. In addition, these effects were neutralized by the concomitant treatment of 5-HT4R antagonist GR125487, which confirmed the specific role of the 5-HT4R in the growth of axon and dendrites. Further, the treatment of RS67333 upregulated the mRNA expression of collapsin response mediator protein-2 (CRMP2) and non-phosphorylated CRMP2 (npCRMP2) together with neurotrophic factors (BDNF, NT-3, NGF) and TRK-A. Additionally, the current research findings reveal that the knockdown of CRMP2 inhibited RS67333-induced growth of the axons and dendrites, which indicates that CRMP2 is required for the 5-HT4R-mediated growth of the axons and dendrites. Overall, the findings of the present in vitro study enrich the understanding and provide insight roles of 5-HT4R in embryonic brain development by promoting the growth of hippocampal neurons.
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Affiliation(s)
- Lokesh Agrawal
- Graduate School of Comprehensive Human Sciences, Kansei, Behavioral and Brain Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Japan
| | - Sunil Kumar Vimal
- Department of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, PR China
| | - Takashi Shiga
- Graduate School of Comprehensive Human Sciences, Kansei, Behavioral and Brain Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Japan; Department of Neurobiology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Japan.
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9
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Muhammad N, Sharif M, Amin J, Mehboob R, Gilani SA, Bibi N, Javed H, Ahmed N. Neurochemical Alterations in Sudden Unexplained Perinatal Deaths-A Review. Front Pediatr 2018; 6:6. [PMID: 29423392 PMCID: PMC5788892 DOI: 10.3389/fped.2018.00006] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 01/09/2018] [Indexed: 01/05/2023] Open
Abstract
Sudden unexpected perinatal collapse is a major trauma for the parents of victims. Sudden infant death syndrome (SIDS) is unexpected and mysterious death of an apparently healthy neonate from birth till 1 year of age without any known causes, even after thorough postmortem investigations. However, the incidence of sudden intrauterine unexplained death syndrome (SIUDS) is seven times higher as compared with SIDS. This observation is approximated 40-80%. Stillbirth is defined as death of a fetus after 20th week of gestation or just before delivery at full term without a known reason. Pakistan has the highest burden of stillbirth in the world. This basis of SIDS, SIUDS, and stillbirths eludes specialists. The purpose of this study is to investigate factors behind failure in control of these unexplained deaths and how research may go ahead with improved prospects. Animal models and physiological data demonstrate that sleep, arousal, and cardiorespiratory malfunctioning are abnormal mechanisms in SIUDS risk factors or in newborn children who subsequently die from SIDS. This review focuses on insights in neuropathology and mechanisms of SIDS and SIUDS in terms of different receptors involved in this major perinatal demise. Several studies conducted in the past decade have confirmed neuropathological and neurochemical anomalies related to serotonin transporter, substance P, acetylcholine α7 nicotine receptors, etc., in sudden unexplained fetal and infant deaths. There is need to focus more on research in this area to unveil the major curtain to neuroprotection by underlying mechanisms leading to such deaths.
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Affiliation(s)
- Nazeer Muhammad
- COMSATS Institute of Information Technology, Wah Cantonment, Pakistan
| | - Muhammad Sharif
- COMSATS Institute of Information Technology, Wah Cantonment, Pakistan
| | - Javeria Amin
- COMSATS Institute of Information Technology, Wah Cantonment, Pakistan
| | - Riffat Mehboob
- Research Unit, Faculty of Allied Health Sciences, University of Lahore, Lahore, Pakistan.,University Institute of Physical Therapy, Faculty of Allied Health Sciences, University of Lahore, Lahore, Pakistan
| | - Syed Amir Gilani
- Research Unit, Faculty of Allied Health Sciences, University of Lahore, Lahore, Pakistan
| | - Nargis Bibi
- COMSATS Institute of Information Technology, Wah Cantonment, Pakistan.,Department of Computer Sciences, Fatima Jinnah Women University, Rawalpindi, Pakistan
| | - Hasnain Javed
- Department of Microbiology and Molecular Genetics, University of the Punjab, Lahore, Pakistan
| | - Naseer Ahmed
- Research Unit, Faculty of Allied Health Sciences, University of Lahore, Lahore, Pakistan.,Medical School, University of Verona, Verona, Italy.,Faculty of Health Sciences, University of the Punjab, Lahore, Pakistan
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Stenbæk DS, Dam VH, Fisher PM, Hansen N, Hjordt LV, Frokjaer VG. No evidence for a role of the serotonin 4 receptor in five-factor personality traits: A positron emission tomography brain study. PLoS One 2017; 12:e0184403. [PMID: 28880910 PMCID: PMC5589219 DOI: 10.1371/journal.pone.0184403] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 08/23/2017] [Indexed: 01/19/2023] Open
Abstract
Serotonin (5-HT) brain architecture appears to be implicated in normal personality traits as supported by genetic associations and studies using molecular brain imaging. However, so far, no studies have addressed potential contributions to variation in normal personality traits from in vivo serotonin 4 receptor (5-HT4R) brain availability, which has recently become possible to image with Positron Emission Tomography (PET). This is particularly relevant since availability of 5-HT4R has been shown to adapt to synaptic levels of 5-HT and thus offers information about serotonergic tone in the healthy brain. In 69 healthy participants (18 females), the associations between personality traits assessed with the five-factor NEO Personality Inventory-Revised (NEO PI-R) and regional cerebral 5-HT4R binding in neocortex, amygdala, hippocampus, and anterior cingulate cortex (ACC) were investigated using linear regression models. The associations between each of the five personality traits and a latent variable construct of global 5-HT4R levels were also evaluated using latent variable structural equation models. We found no significant associations between the five NEO personality traits and regional 5-HT4R binding (all p-values > .17) or the latent construct of global 5-HT4R levels (all p-values > .37). Our findings indicate that NEO personality traits and 5-HT4R are not related in healthy participants. Under the assumption that global 5-HT4R levels index 5-HT tone, our data also suggest that 5-HT tone per se is not directly implicated in normal personality traits.
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Affiliation(s)
- Dea Siggaard Stenbæk
- Neurobiology Research Unit, the Neuroscience Centre, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Center for Integrated Molecular Brain Imaging and Center for Experimental Medicine Neuropharmacology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- * E-mail:
| | - Vibeke Høyrup Dam
- Neurobiology Research Unit, the Neuroscience Centre, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Center for Integrated Molecular Brain Imaging and Center for Experimental Medicine Neuropharmacology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Patrick MacDonald Fisher
- Neurobiology Research Unit, the Neuroscience Centre, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Center for Integrated Molecular Brain Imaging and Center for Experimental Medicine Neuropharmacology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Nanna Hansen
- Neurobiology Research Unit, the Neuroscience Centre, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Liv Vadskjær Hjordt
- Neurobiology Research Unit, the Neuroscience Centre, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Center for Integrated Molecular Brain Imaging and Center for Experimental Medicine Neuropharmacology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Vibe Gedsoe Frokjaer
- Neurobiology Research Unit, the Neuroscience Centre, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
- Center for Integrated Molecular Brain Imaging and Center for Experimental Medicine Neuropharmacology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
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Stenbæk DS, Fisher PM, Ozenne B, Andersen E, Hjordt LV, McMahon B, Hasselbalch SG, Frokjaer VG, Knudsen GM. Brain serotonin 4 receptor binding is inversely associated with verbal memory recall. Brain Behav 2017; 7:e00674. [PMID: 28413715 PMCID: PMC5390847 DOI: 10.1002/brb3.674] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Revised: 01/12/2017] [Accepted: 02/04/2017] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND We have previously identified an inverse relationship between cerebral serotonin 4 receptor (5-HT 4R) binding and nonaffective episodic memory in healthy individuals. Here, we investigate in a novel sample if the association is related to affective components of memory, by examining the association between cerebral 5-HT 4R binding and affective verbal memory recall. METHODS Twenty-four healthy volunteers were scanned with the 5-HT 4R radioligand [11C]SB207145 and positron emission tomography, and were tested with the Verbal Affective Memory Test-24. The association between 5-HT 4R binding and affective verbal memory was evaluated using a linear latent variable structural equation model. RESULTS We observed a significant inverse association across all regions between 5-HT 4R binding and affective verbal memory performances for positive (p = 5.5 × 10-4) and neutral (p = .004) word recall, and an inverse but nonsignificant association for negative (p = .07) word recall. Differences in the associations with 5-HT 4R binding between word categories (i.e., positive, negative, and neutral) did not reach statistical significance. CONCLUSION Our findings replicate our previous observation of a negative association between 5-HT 4R binding and memory performance in an independent cohort and provide novel evidence linking 5-HT 4R binding, as a biomarker for synaptic 5-HT levels, to the mnestic processing of positive and neutral word stimuli in healthy humans.
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Affiliation(s)
- Dea S Stenbæk
- Neurobiology Research Unit and Center for Integrated Molecular Brain Imaging The Neuroscience Centre Rigshospitalet Copenhagen Denmark
| | - Patrick M Fisher
- Neurobiology Research Unit and Center for Integrated Molecular Brain Imaging The Neuroscience Centre Rigshospitalet Copenhagen Denmark
| | - Brice Ozenne
- Neurobiology Research Unit and Center for Integrated Molecular Brain Imaging The Neuroscience Centre Rigshospitalet Copenhagen Denmark.,Department of Biostatistics University of Copenhagen Copenhagen Denmark
| | - Emil Andersen
- Neurobiology Research Unit and Center for Integrated Molecular Brain Imaging The Neuroscience Centre Rigshospitalet Copenhagen Denmark
| | - Liv V Hjordt
- Neurobiology Research Unit and Center for Integrated Molecular Brain Imaging The Neuroscience Centre Rigshospitalet Copenhagen Denmark
| | - Brenda McMahon
- Neurobiology Research Unit and Center for Integrated Molecular Brain Imaging The Neuroscience Centre Rigshospitalet Copenhagen Denmark
| | - Steen G Hasselbalch
- Neurobiology Research Unit and Center for Integrated Molecular Brain Imaging The Neuroscience Centre Rigshospitalet Copenhagen Denmark.,Department of Neurology The Neuroscience Centre Danish Dementia Research Centre Rigshospitalet, University of Copenhagen Copenhagen Denmark
| | - Vibe G Frokjaer
- Neurobiology Research Unit and Center for Integrated Molecular Brain Imaging The Neuroscience Centre Rigshospitalet Copenhagen Denmark
| | - Gitte M Knudsen
- Neurobiology Research Unit and Center for Integrated Molecular Brain Imaging The Neuroscience Centre Rigshospitalet Copenhagen Denmark
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