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Yu T, Cui J, Chen S. Electrochemical detection of the neurotransmitter glutamate and the effect of the psychotropic drug riluzole on its oxidation response. Anal Bioanal Chem 2024; 416:1707-1716. [PMID: 38363306 DOI: 10.1007/s00216-024-05175-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/17/2024]
Abstract
Glutamate is the main excitatory neurotransmitter in the brain and plays a leading role in degenerative diseases, such as motor neuron diseases. Riluzole is a glutamate regulator and a therapeutic drug for motor neuron diseases. In this work, the interaction between glutamate and riluzole was studied using cyclic voltammetry and square-wave voltammetry at a glassy carbon electrode (GCE). It was shown that glutamate underwent a two-electron transfer reaction on the GCE surface, and the electrochemical detection limits of glutamate and riluzole were 483 μmol/L and 11.47 μmol/L, respectively. The results confirm that riluzole can promote the redox reaction of glutamate. This work highlights the significance of electrochemical technology in the sensing detection of the interaction between glutamate and related psychotropic drugs.
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Affiliation(s)
- Tao Yu
- School of Automation, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Jingjie Cui
- School of Automation, Hangzhou Dianzi University, Hangzhou, 310018, China.
| | - Shaowei Chen
- Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA, 95064, USA
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Long JY, Li B, Ding P, Mei H, Li Y. Correlations between multimodal neuroimaging and peripheral inflammation in different subtypes and mood states of bipolar disorder: a systematic review. Int J Bipolar Disord 2024; 12:5. [PMID: 38388844 PMCID: PMC10884387 DOI: 10.1186/s40345-024-00327-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 02/07/2024] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND Systemic inflammation-immune dysregulation and brain abnormalities are believed to contribute to the pathogenesis of bipolar disorder (BD). However, the connections between peripheral inflammation and the brain, especially the interactions between different BD subtypes and episodes, remain to be elucidated. Therefore, we conducted the present study to provide a comprehensive understanding of the complex association between peripheral inflammation and neuroimaging findings in patients with bipolar spectrum disorders. METHODS This systematic review was registered in the International Prospective Register of Systematic Reviews (PROSPERO) database (CRD42023447044) and conducted according to the Population, Intervention, Comparison, Outcomes, and Study Design (PICOS) framework. Online literature databases (PubMed, Web of Science, Scopus, EMBASE, MEDLINE, PsycINFO, and the Cochrane Library) were searched for studies that simultaneously investigated both peripheral inflammation-related factors and magnetic resonance neurography of BD patients up to July 01, 2023. Then, we analysed the correlations between peripheral inflammation and neuroimaging, as well as the variation trends and the shared and specific patterns of these correlations according to different clinical dimensions. RESULTS In total, 34 publications ultimately met the inclusion criteria for this systematic review, with 2993 subjects included. Among all patterns of interaction between peripheral inflammation and neuroimaging, the most common pattern was a positive relationship between elevated inflammation levels and decreased neuroimaging measurements. The brain regions most susceptible to inflammatory activation were the anterior cingulate cortex, amygdala, prefrontal cortex, striatum, hippocampus, orbitofrontal cortex, parahippocampal gyrus, postcentral gyrus, and posterior cingulate cortex. LIMITATIONS The small sample size, insufficiently explicit categorization of BD subtypes and episodes, and heterogeneity of the research methods limited further implementation of quantitative data synthesis. CONCLUSIONS Disturbed interactions between peripheral inflammation and the brain play a critical role in BD, and these interactions exhibit certain commonalities and differences across various clinical dimensions of BD. Our study further confirmed that the fronto-limbic-striatal system may be the central neural substrate in BD patients.
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Affiliation(s)
- Jing-Yi Long
- Wuhan Mental Health Center, No. 89, Gongnongbing Rd., Jiang'an District, Wuhan, 430012, Hubei Province, China
- Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Bo Li
- School of Public Administration, China University of Geosciences, Wuhan, 430074, China
| | - Pei Ding
- Wuhan Mental Health Center, No. 89, Gongnongbing Rd., Jiang'an District, Wuhan, 430012, Hubei Province, China
- Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Hao Mei
- Zhongnan Hospital of Wuhan University, No. 169, East Lake Rd., Wuchang District, Wuhan, 430062, Hubei Province, China.
| | - Yi Li
- Wuhan Mental Health Center, No. 89, Gongnongbing Rd., Jiang'an District, Wuhan, 430012, Hubei Province, China.
- Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China.
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Keifer OP, Gutierrez J, Butt MT, Cramer SD, Bartus R, Tansey M, Deaver D, Betourne A, Boulis NM. Spinal cord and brain concentrations of riluzole after oral and intrathecal administration: A potential new treatment route for amyotrophic lateral sclerosis. PLoS One 2023; 18:e0277718. [PMID: 37607205 PMCID: PMC10443869 DOI: 10.1371/journal.pone.0277718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 07/19/2023] [Indexed: 08/24/2023] Open
Abstract
Riluzole is the only treatment known to improve survival in patients with Amyotrophic Lateral Sclerosis (ALS). However, oral riluzole efficacy is modest at best, further it is known to have large inter-individual variability of serum concentration and clearance, is formulated as an oral drug in a patient population plagued with dysphagia, and has known systemic side-effects like asthenia (limiting patient compliance) and elevated liver enzymes. In this context, we postulated that continuous intrathecal (IT) infusion of low doses of riluzole could provide consistent elevations of the drug spinal cord (SC) concentrations at or above those achieved with oral dosing, without increasing the risk for adverse events associated with systemic drug exposure or off-target side effects in the brain. We developed a formulation of riluzole for IT delivery and conducted our studies in purpose-bred hound dogs. Our non-GLP studies revealed that IT infusion alone was able to increase SC concentrations above those provided by oral administration, without increasing plasma concentrations. We then conducted two GLP studies that combined IT infusion with oral administration at human equivalent dose, to evaluate SC and brain concentrations of riluzole along with assessments of safety and tolerability. In the 6-week study, the highest IT dose (0.2 mg/hr) was well tolerated by the animals and increased SC concentrations above those achieved with oral riluzole alone, without increasing brain concentrations. In the 6-month study, the highest dose tested (0.4 mg/hr) was not tolerated and yielded SC significantly above those achieved in all previous studies. Our data show the feasibility and safety profile of continuous IT riluzole delivery to the spinal cord, without concurrent elevated liver enzymes, and minimal brain concentrations creating another potential therapeutic route of delivery to be used in isolation or in combination with other therapeutics."
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Affiliation(s)
- Orion P. Keifer
- Department of Neurosurgery, Emory University School of Medicine, Atlanta, GA, United States of America
| | - Juanmarco Gutierrez
- Department of Neurosurgery, Emory University School of Medicine, Atlanta, GA, United States of America
| | - Mark T. Butt
- Tox Path Specialists, LLC (a StageBio Company), Frederick, MD, United States of America
| | - Sarah D. Cramer
- Tox Path Specialists, LLC (a StageBio Company), Frederick, MD, United States of America
| | - Raymond Bartus
- RTBioconsultants, San Diego, CA, United States of America
| | - Malu Tansey
- Department of Physiology, Emory University School of Medicine, Atlanta, GA, United States of America
| | - Daniel Deaver
- Deaver Non-Clinical Drug Development Consulting, LLC, Franklin, MA, United States of America
| | | | - Nicholas M. Boulis
- Department of Neurosurgery, Emory University School of Medicine, Atlanta, GA, United States of America
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Bansal Y, Fee C, Misquitta KA, Codeluppi SA, Sibille E, Berman RM, Coric V, Sanacora G, Banasr M. Prophylactic Efficacy of Riluzole against Anxiety- and Depressive-Like Behaviors in Two Rodent Stress Models. Complex Psychiatry 2023; 9:57-69. [PMID: 37101541 PMCID: PMC10123365 DOI: 10.1159/000529534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 01/24/2023] [Indexed: 02/05/2023] Open
Abstract
Introduction Chronic stress-related illnesses such as major depressive disorder and post-traumatic stress disorder share symptomatology, including anxiety, anhedonia, and helplessness. Across disorders, neurotoxic dysregulated glutamate (Glu) signaling may underlie symptom emergence. Current first-line antidepressant drugs, which do not directly target Glu signaling, fail to provide adequate benefit for many patients and are associated with high relapse rates. Riluzole modulates glutamatergic neurotransmission by increasing metabolic cycling and modulating signal transduction. Clinical studies exploring riluzole's efficacy in stress-related disorders have provided varied results. However, the utility of riluzole for treating specific symptom dimensions or as a prophylactic treatment has not been comprehensively assessed. Methods We investigated whether chronic prophylactic riluzole (∼12-15 mg/kg/day p.o.) could prevent the emergence of behavioral deficits induced by unpredictable chronic mild stress (UCMS) in mice. We assessed (i) anxiety-like behavior using the elevated-plus maze, open-field test, and novelty-suppressed feeding, (ii) mixed anxiety/anhedonia-like behavior in the novelty-induced hypophagia test, and (iii) anhedonia-like behavior using the sucrose consumption test. Z-scoring summarized changes across tests measuring similar dimensions. In a separate learned helplessness (LH) cohort, we investigated whether chronic prophylactic riluzole treatment could block the development of helplessness-like behavior. Results UCMS induced an elevation in anhedonia-like behavior and overall behavioral emotionality that was blocked by prophylactic riluzole. In the LH cohort, prophylactic riluzole blocked the development of helplessness-like behavior. Discussion/Conclusion This study supports the utility of riluzole as a prophylactic medication for preventing anhedonia and helplessness symptoms associated with stress-related disorders.
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Affiliation(s)
- Yashika Bansal
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Corey Fee
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - Keith A. Misquitta
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - Sierra A. Codeluppi
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - Etienne Sibille
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | | | | | - Gerard Sanacora
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Mounira Banasr
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
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The neuroprotective and neuroplastic potential of glutamatergic therapeutic drugs in bipolar disorder. Neurosci Biobehav Rev 2022; 142:104906. [DOI: 10.1016/j.neubiorev.2022.104906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/30/2022] [Accepted: 10/02/2022] [Indexed: 11/21/2022]
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Nooraee N, Molenberghs G, Ormel J, van den Heuvel ER. A normal-probit-binomial model for the analysis of repeated sum scores from multi-item questionnaires. COMMUN STAT-SIMUL C 2022. [DOI: 10.1080/03610918.2022.2092140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Nazanin Nooraee
- Center for Mathematical Sciences, Merck Sharp & Dohme, Oss, The Netherlands
| | - Geert Molenberghs
- I-BioStat, Katholieke Universiteit Leuven, Leuven, Belgium
- I-BioStat, Universiteit Hasselt, Diepenbeek, Belgium
| | - Johan Ormel
- Interdisciplinary Center of Psychopathology and Emotion Regulation, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Edwin R. van den Heuvel
- Department of Mathematics and Computer Science, Eindhoven University of Technology, Eindhoven, The Netherlands
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Vasiliu O. Investigational Drugs for the Treatment of Depression (Part 2): Glutamatergic, Cholinergic, Sestrin Modulators, and Other Agents. Front Pharmacol 2022; 13:884155. [PMID: 35847011 PMCID: PMC9284317 DOI: 10.3389/fphar.2022.884155] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 04/21/2022] [Indexed: 11/29/2022] Open
Abstract
Many investigational drugs with antidepressant activity are currently explored in different phases of clinical research, with indications such as major depressive disorder, treatment-resistant major depression, bipolar depression, post-partum depression, and late-life depression. Although the vast majority of the antidepressants in clinical use are based on the monoaminergic hypothesis of depression, recent data supported the launching on the market of two new, non-monoamine-modulating drugs. Esketamine for treatment-resistant major depression and brexanolone for post-partum depression are two exceptions from the monoaminergic model, although their use is still limited by high costs, unique way of administration (only intravenously for brexanolone), physicians’ reluctance to prescribe new drugs, and patients’ reticence to use them. Glutamatergic neurotransmission is explored based on the positive results obtained by intranasal esketamine, with subanesthetic intravenous doses of ketamine, and D-cycloserine, traxoprodil, MK-0657, AXS-05, AVP-786, combinations of cycloserine and lurasidone, or dextromethorphan and quinidine, explored as therapeutic options for mono- or bipolar depression. Sestrin modulators, cholinergic receptor modulators, or onabotulinumtoxinA have also been investigated for potential antidepressant activity. In conclusion, there is hope for new treatments in uni- and bipolar depression, as it became clear, after almost 7 decades of monoamine-modulating antidepressants, that new pathogenetic pathways should be targeted to increase the response rate in this population.
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Bahji A, Zarate CA, Vazquez GH. Efficacy and safety of racemic ketamine and esketamine for depression: a systematic review and meta-analysis. Expert Opin Drug Saf 2022; 21:853-866. [PMID: 35231204 PMCID: PMC9949988 DOI: 10.1080/14740338.2022.2047928] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Racemic ketamine and esketamine have demonstrated rapid antidepressant effects. We aimed to review the efficacy and safety of racemic and esketamine for depression. RESEARCH DESIGN AND METHODS We conducted a PRISMA-guided review for relevant randomized controlled trials of racemic or esketamine for unipolar or bipolar major depression from database inception through 2021. We conducted random-effects meta-analyses using pooled rate ratios (RRs) and Cohen's standardized mean differences (d) with their 95% confidence intervals (CI). RESULTS We found 36 studies (2903 participants, 57% female, 45.1 +/- 7.0 years). Nine trials used esketamine, while the rest used racemic ketamine. The overall study quality was high. Treatment with any form of ketamine was associated with improved response (RR=2.14; 95% CI, 1.72-2.66; I2=65%), remission (RR=1.64; 95% CI, 1.33-2.02; I2=39%), and depression severity (d=-0.63; 95% CI, -0.80 to -0.45; I2=78%) against placebo. Overall, there was no association between treatment with any form of ketamine and retention in treatment (RR=1.00; 95% CI, 0.99-1.01; I2<1%), dropouts due to adverse events (RR=1.56; 95% CI, 1.00-2.45; I2<1%), or the overall number of adverse events reported per participant (OR=2.14; 95% CI, 0.82-5.60; I2=62%) against placebo. CONCLUSIONS Ketamine and esketamine are effective, safe, and acceptable treatments for individuals living with depression.
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Affiliation(s)
- Anees Bahji
- Department of Psychiatry, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada;,British Columbia Centre on Substance Use, Vancouver, British Columbia, Canada
| | - Carlos A. Zarate
- Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Gustavo H. Vazquez
- Department of Psychiatry, Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
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High-fat diet induces depression-like phenotype via astrocyte-mediated hyperactivation of ventral hippocampal glutamatergic afferents to the nucleus accumbens. Mol Psychiatry 2022; 27:4372-4384. [PMID: 36180573 PMCID: PMC9734059 DOI: 10.1038/s41380-022-01787-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 09/05/2022] [Accepted: 09/09/2022] [Indexed: 12/14/2022]
Abstract
Comorbidity exists between metabolic disorders and depressive syndrome with unclear mechanisms. To characterize the causal relationship, we adopted a 12-week high-fat diet (HFD) to induce metabolic disorder and depressive phenotypes in mice. Initially, we identified an enhanced glutamatergic input in the nucleus accumbens of HFD mice. Retrograde tracing and chemogenetic inhibition showed that the hyperactive ventral hippocampal glutamatergic afferents to the nucleus accumbens determined the exhibition of depression-like behavior in HFD mice. Using lentiviral knockdown and overexpression approaches, we proved that HFD-induced downregulation of glial glutamate transporters, GLAST and GLT-1, contributed to the observed circuit maladaptations and subsequent depression-like behaviors. Finally, we identified a potential therapeutic agent, riluzole, which could mitigate the HFD-induced behavioral deficits by normalizing the expressions of GLAST and GLT-1 and ventral hippocampal glutamatergic afferents to the nucleus accumbens. Overall, astrocyte-mediated disturbance in glutamatergic transmission underlies the metabolic disorder-related depressive syndrome and represents a therapeutic target for this subtype of depressive mood disorders.
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Elsayed OH, Ercis M, Pahwa M, Singh B. Treatment-Resistant Bipolar Depression: Therapeutic Trends, Challenges and Future Directions. Neuropsychiatr Dis Treat 2022; 18:2927-2943. [PMID: 36561896 PMCID: PMC9767030 DOI: 10.2147/ndt.s273503] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
INTRODUCTION Bipolar disorder (BD) is a chronic mental illness impacting 1-2% of the population worldwide and causing high rates of functional impairment. Patients with BD spend most of their time in depressive episodes and up to one-third of patients do not respond to adequate doses of medications. Although no consensus exists for definition of treatment-resistant bipolar depression (TRBD), failure of symptoms improvement despite an adequate trial of two therapeutic agents is a common theme of TRBD. In this paper, we review the evidence base of therapeutic interventions, challenges, and potential future directions for TRBD. METHODS We conducted a literature search for randomized controlled trials on PubMed for the treatment of TRBD and ongoing trials for the treatment of TRBD/bipolar depression on clinicaltrials.gov. RESULTS Several therapeutic agents have been investigated for TRBD. Adjunctive pramipexole and modafinil have data supporting short-term efficacy in TRBD, along with limited data for racemic intravenous ketamine. Celecoxib augmentation of escitalopram and treatment with metformin in patients with insulin resistance showed promising results. Right unilateral electroconvulsive therapy displayed statistically significant response rate and improvement, but not remission compared to pharmacotherapy. Trials for transcranial magnetic stimulation (TMS) have failed to show a significant difference from sham treatment in TRBD. FUTURE TRENDS Pharmacological treatments with novel mechanisms of actions like brexpiprazole and vortioxetine are being investigated following successes in unipolar depression. Modified TMS protocols such as accelerated TMS are under investigation. Innovative approaches like psychedelic-assisted psychotherapy, interleukin-2, fecal microbiota transplantation and multipotent stromal cells are being studied. CONCLUSION Evidence on current treatment modalities for TRBD is limited with low efficacy. More research is needed for successful treatment of TRBD. Effective therapies and innovative approaches to treatment are being investigated and could show promise.
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Affiliation(s)
- Omar H Elsayed
- Department of Psychiatry and Behavioral Sciences, University of Louisville, Louisville, KY, USA
| | - Mete Ercis
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
| | - Mehak Pahwa
- Department of Psychiatry and Behavioral Sciences, University of Louisville, Louisville, KY, USA
| | - Balwinder Singh
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
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Sonmez AI, Lewis CP, Port JD, Athreya AP, Choi DS, Zaccariello MJ, Shekunov J, Blacker CJ, Croarkin PE. A pilot spectroscopy study of adversity in adolescents. Biomark Neuropsychiatry 2021; 5:100043. [PMID: 35783196 PMCID: PMC9248870 DOI: 10.1016/j.bionps.2021.100043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Background Childhood adversity is a global health problem affecting 25-50% of children worldwide. Few prior studies have examined the underlying neurochemistry of adversity in adolescents. This cross-sectional study examined spectroscopic markers of trauma in a cohort of adolescents with major depressive disorder (MDD) and healthy controls. We hypothesized that historical adversity would have a negative relationship with spectroscopic measures of glutamate metabolites in anterior cingulate cortex. Methods Adolescent participants (aged 13-21) underwent a semi-structured diagnostic interview and clinical assessment, which included the self-report Childhood Trauma Questionnaire (CTQ), a 28-item assessment of childhood adversity. Proton magnetic resonance spectroscopy (1H-MRS) scans at 3 Tesla of an anterior cingulate cortex (ACC) voxel (8 cm3) encompassing both hemispheres were collected using a 2-dimensional J-averaged sequence to assess N-acetylaspartate (NAA), Glx (glutamate+glutamine) and [NAA]/[Glx] concentrations. Generalized linear models assessed the relationships between CTQ scores and metabolite levels in ACC. Results Thirty-nine participants (17 healthy controls, 22 depressed participants) underwent 1H-MRS and completed the CTQ measures. There were decrements in [NAA]/[Glx] ratio in the ACC of participants with childhood adversity while no significant relationship between CTQ total score and any of the ACC metabolites was found in the combined sample. Exploratory results revealed a positive association between Glx levels and CTQ scores in depressed participants. Conversely the [NAA]/[Glx] ratio had a negative association with total CTQ scores in the depressed participants. Emotional Abuse Scale showed a significant negative relationship with [NAA]/[Glx] ratio in the combined sample when adjusted for depression severity. Conclusions Our findings suggest that childhood adversity may impact brain neurochemical profiles. Further longitudinal studies should examine neurochemical correlates of childhood adversity throughout development and in populations with other psychiatric disorders.
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Affiliation(s)
- A. Irem Sonmez
- Department of Psychiatry and Psychology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
- Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Charles P. Lewis
- Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School, Minneapolis, MN, USA
| | - John D. Port
- Department of Psychiatry and Psychology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
- Department of Radiology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Arjun P. Athreya
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine and Science, 200 First Street SW, Rochester, MN 55905, USA
| | - Doo-Sop Choi
- Department of Psychiatry and Psychology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine and Science, 200 First Street SW, Rochester, MN 55905, USA
| | - Michael J. Zaccariello
- Department of Psychiatry and Psychology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Julia Shekunov
- Department of Psychiatry and Psychology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Caren J. Blacker
- Department of Psychiatry and Behavioral Sciences, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Paul E. Croarkin
- Department of Psychiatry and Psychology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
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Bahji A, Zarate CA, Vazquez GH. Ketamine for Bipolar Depression: A Systematic Review. Int J Neuropsychopharmacol 2021; 24:535-541. [PMID: 33929489 PMCID: PMC8299822 DOI: 10.1093/ijnp/pyab023] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/12/2021] [Accepted: 04/27/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Ketamine appears to have a therapeutic role in certain mental disorders, most notably unipolar major depressive disorder. However, its efficacy in bipolar depression is less clear. This study aimed to assess the efficacy and tolerability of ketamine for bipolar depression. METHODS We conducted a systematic review of experimental studies using ketamine for the treatment of bipolar depression. We searched PubMed, MEDLINE, Embase, PsycINFO, and the Cochrane Central Register for relevant studies published since each database's inception. We synthesized evidence regarding efficacy (improvement in depression rating scores) and tolerability (adverse events, dissociation, dropouts) across studies. RESULTS We identified 6 studies, with 135 participants (53% female; 44.7 years; standard deviation, 11.7 years). All studies used 0.5 mg/kg of add-on intravenous racemic ketamine, with the number of doses ranging from 1 to 6; all participants continued a mood-stabilizing agent. The overall proportion achieving a response (defined as those having a reduction in their baseline depression severity of at least 50%) was 61% for those receiving ketamine and 5% for those receiving a placebo. The overall response rates varied from 52% to 80% across studies. Ketamine was reasonably well tolerated; however, 2 participants (1 receiving ketamine and 1 receiving placebo) developed manic symptoms. Some participants developed significant dissociative symptoms at the 40-minute mark following ketamine infusion in 2 trials. CONCLUSIONS There is some preliminary evidence supporting use of intravenous racemic ketamine to treat adults with bipolar depression. There is a need for additional studies exploring longer-term outcomes and alterative formulations of ketamine.
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Affiliation(s)
- Anees Bahji
- Department of Psychiatry, University of Calgary, Calgary, Alberta, Canada; British Columbia Centre for Substance Use, Vancouver, British Columbia, Canada; Research in Addiction Medicine Scholars [RAMS] Program, Boston University Medical Centre, Boston, MA, USA
| | - Carlos A Zarate
- Section Neurobiology and Treatment of Mood Disorders, Division of Intramural Research Program, National Institute of Mental Health, Bethesda, Maryland, USA
| | - Gustavo H Vazquez
- Department of Psychiatry, Queen’s University, Kingston, Ontario, Canada,Correspondence: Gustavo Vazquez, MD, PhD, FRCPC, Professor of Psychiatry, Queen’s University Medical School, 752 King Street West, Kingston, ON K7L 4X3, Canada ()
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Comparative efficacy of racemic ketamine and esketamine for depression: A systematic review and meta-analysis. J Affect Disord 2021; 278:542-555. [PMID: 33022440 PMCID: PMC7704936 DOI: 10.1016/j.jad.2020.09.071] [Citation(s) in RCA: 174] [Impact Index Per Article: 58.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 09/08/2020] [Accepted: 09/11/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND Ketamine appears to have a therapeutic role in certain mental disorders, most notably depression. However, the comparative performance of different formulations of ketamine is less clear. OBJECTIVES This study aimed to assess the comparative efficacy and tolerability of racemic and esketamine for the treatment of unipolar and bipolar major depression. DESIGN Systematic review and meta-analysis. DATA SOURCES We searched PubMed, MEDLINE, Embase, PsycINFO, the Cochrane Central Register of Controlled Clinical Trials, and the Cochrane Database of Systematic Reviews for relevant studies published since database inception and December 17, 2019. STUDY ELIGIBILITY CRITERIA We considered randomized controlled trials examining racemic or esketamine for the treatment of unipolar or bipolar major depression. OUTCOMES Primary outcomes were response and remission from depression, change in depression severity, suicidality, retention in treatment, drop-outs, and drop-outs due to adverse events. ANALYSIS Evidence from randomized controlled trials was synthesized as rate ratios (RRs) for treatment response, disorder remission, adverse events, and withdrawals and as standardized mean differences (SMDs) for change in symptoms, via random-effects meta-analyses. FINDINGS 24 trials representing 1877 participants were pooled. Racemic ketamine relative to esketamine demonstrated greater overall response (RR = 3.01 vs. RR = 1.38) and remission rates (RR = 3.70 vs. RR = 1.47), as well as lower dropouts (RR = 0.76 vs. RR = 1.37). CONCLUSIONS Intravenous ketamine appears to be more efficacious than intranasal esketamine for the treatment of depression.
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Abstract
Bipolar disorders are severe and have a high prevalence; despite this, the neurobiological mechanisms are far from being elucidated, and this limits the development of new treatments. Although the aetiology of bipolar disorders is not yet fully understood, it is accepted that the disorder(s) may result from the interaction between genetic factors that cause susceptibility and predisposing, precipitating and perpetuating environmental factors, such as stress and traumatic events. A pathophysiological formulation of the disease suggests that dysfunctions in intracellular biochemical cascades, oxidative stress and mitochondrial dysfunction impair the processes linked to neuronal plasticity, leading to cell damage and the consequent loss of brain tissue that has been identified in post-mortem and neuroimaging studies. The data we have reviewed suggests that peripheral biomarkers related to hormones, inflammation, oxidative stress and neurotrophins are altered in bipolar disorders, especially during acute mood episodes. Together, these changes have been associated with a systemic toxicity of the disease and the damage resulting from multiple episodes. Systemic toxicity related to recurrent episodes in bipolar disorder may influence brain anatomical changes associated with the progression of stress and neuroplasticity in bipolar disorder and the response to treatment.
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Affiliation(s)
- Allan H Young
- Centre for Affective Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Mario F Juruena
- Centre for Affective Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
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15
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Małgorzata P, Paweł K, Iwona ML, Brzostek T, Andrzej P. Glutamatergic dysregulation in mood disorders: opportunities for the discovery of novel drug targets. Expert Opin Ther Targets 2020; 24:1187-1209. [PMID: 33138678 DOI: 10.1080/14728222.2020.1836160] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Recently, a considerable attention has been paid to glutamatergic conception of mood disorders. The development of new treatment strategies targeted at glutamate provides new opportunities for the treatment of mood disorders. It is expected that these novel therapeutic options will provide a fast and sustained antidepressant effect and will be better tolerated by patients than the currently available antidepressants. AREAS COVERED This paper discusses glutamatergic abnormalities in mood disorders and reviews novel glutamate-based drugs developed for the treatment of these disorders. We have searched the PubMed and EMBASE databases, presented the results of relevant clinical studies and also describe novel glutamate-based agents that are under investigation. EXPERT OPINION The glutamatergic system plays many important roles in energy metabolism of the brain and neurotransmission; therefore, any attempt to identify novel therapeutic targets within this system seems justified. The effective development of new glutamate-based drugs requires, among others, a more in-depth exploration and understanding of the anatomy, function, and localization of different glutamatergic receptors in the brain. In our opinion, novel glutamate-based antidepressants will find application in the treatment of mood disorders and present an option will be widely used in clinical practice in the future.
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Affiliation(s)
- Panek Małgorzata
- Department of Biotechnology and General Technology of Food, Faculty of Food Technology, University of Agriculture , Kraków, Poland
| | - Kawalec Paweł
- Department of Nutrition and Drug Research, Institute of Public Health, Faculty of Health Sciences, Jagiellonian University , Kraków, Poland
| | - Malinowska Lipień Iwona
- Department of Internal Medicine and Community Nursing, Faculty of Health Sciences, Jagiellonian University Medical College , Kraków, Poland
| | - Tomasz Brzostek
- Department of Internal Medicine and Community Nursing, Faculty of Health Sciences, Jagiellonian University Medical College , Kraków, Poland
| | - Pilc Andrzej
- Department of Nutrition and Drug Research, Institute of Public Health, Faculty of Health Sciences, Jagiellonian University , Kraków, Poland.,Department of Neurobiology, Maj Institute of Pharmacology, Polish Academy of Sciences , Kraków, Poland
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16
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Spangler PT, West JC, Dempsey CL, Possemato K, Bartolanzo D, Aliaga P, Zarate C, Vythilingam M, Benedek DM. Randomized Controlled Trial of Riluzole Augmentation for Posttraumatic Stress Disorder: Efficacy of a Glutamatergic Modulator for Antidepressant-Resistant Symptoms. J Clin Psychiatry 2020; 81:20m13233. [PMID: 33113596 PMCID: PMC7673650 DOI: 10.4088/jcp.20m13233] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 05/18/2020] [Indexed: 01/07/2023]
Abstract
OBJECTIVE Current pharmacologic treatments for posttraumatic stress disorder (PTSD) have shown limited efficacy, prompting a call to investigate new classes of medications. The current study investigated the efficacy of glutamate modulation with riluzole augmentation for combat-related PTSD symptoms resistant to treatment with selective serotonin reuptake inhibitors (SSRIs) or serotonin-norepinephrine reuptake inhibitors (SNRIs). METHODS A randomized, double-blind, placebo-controlled, parallel trial was conducted at Walter Reed National Military Medical Center and Syracuse VA Medical Center between December 2013 and November 2017. Veterans and active duty service members with combat-related PTSD (per the Clinician Administered PTSD Scale [CAPS]) who were not responsive to SSRI or SNRI pharmacotherapy were randomized to 8-week augmentation with a starting dose of 100 mg/d of riluzole (n = 36) or placebo (n = 38) and assessed weekly for PTSD symptoms, anxiety, depression, disability, and side effects. RESULTS Intent-to-treat analyses (N = 74) of the primary outcome (CAPS for DSM-IV) showed no significant between-group difference in change in overall PTSD symptoms (F = 0.64, P = .422), with a small effect size (d = 0.25). There was clinically significant within-group improvement in overall PTSD symptoms in both groups, with a greater mean (SD) decrease in CAPS score in the riluzole group (-21.1 [18.9]) than in the placebo group (-16.7 [17.2]). Exploratory analyses of PTSD symptom clusters showed significantly greater improvement on hyperarousal symptoms in the riluzole group as measured by the PTSD Checklist-Specific-Subscale D (d = 0.48) and near-significant findings on the CAPS Subscale D. Riluzole augmentation was not superior to placebo on change in depression, anxiety, or disability severity. CONCLUSIONS Although preliminary, the exploratory findings of this study offer some evidence that riluzole augmentation of an SSRI or SNRI may selectively improve PTSD hyperarousal symptoms without changes in overall PTSD symptoms, depression, anxiety, or disability. Additional investigation of the mechanism of the efficacy of riluzole for hyperarousal symptoms is warranted. TRIAL REGISTRATION ClinicalTrials.gov identifier: NCT02155829.
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Affiliation(s)
- Patricia T. Spangler
- Center for the Study of Traumatic Stress, Department of Psychiatry, Uniformed Services University, Bethesda, MD
| | - James C. West
- Department of Psychiatry, Uniformed Services University, Bethesda, MD
| | - Catherine L. Dempsey
- Center for the Study of Traumatic Stress, Department of Psychiatry, Uniformed Services University, Bethesda, MD
| | - Kyle Possemato
- Veterans Administration Center for Integrated Healthcare, Syracuse, NY
| | - Danielle Bartolanzo
- Center for the Study of Traumatic Stress, Department of Psychiatry, Uniformed Services University, Bethesda, MD
| | - Pablo Aliaga
- Center for the Study of Traumatic Stress, Department of Psychiatry, Uniformed Services University, Bethesda, MD
| | - Carlos Zarate
- Experimental Therapeutics & Pathophysiology Branch, National Institute of Mental Health, Bethesda, MD
| | | | - David M. Benedek
- Department of Psychiatry, Uniformed Services University, Bethesda, MD
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17
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Predictors of Depression in Caucasian Patients with Amyotrophic Lateral Sclerosis in Romania. Brain Sci 2020; 10:brainsci10080470. [PMID: 32707986 PMCID: PMC7465215 DOI: 10.3390/brainsci10080470] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/20/2020] [Accepted: 07/21/2020] [Indexed: 11/17/2022] Open
Abstract
Depression remains an underdiagnosed comorbidity which significantly decreases the quality of life in amyotrophic lateral sclerosis (ALS) patients. We aimed to investigate the prevalence of depression in a cohort of ALS patients with more than one year of disease evolution. A total of 50 ALS patients were evaluated with the Beck Depression Inventory II (BDI-II) and cognition, using the Mini-Cog Standardized Instrument (MCSI). The clinical disability was evaluated using the ALS Functional Rating Scale (ALSFRS). The prevalence of depression was 42.8%. A lower BDI-II score was significantly correlated with a higher education level, the spouse as a caregiver, spiritual devotion, and employment status (p < 0.05). A multiple linear regression analysis between the BDI-II score as the dependent variable and various independent variables such as spirituality, caregiver status, educational level, and occupational status revealed that only the type of caregiver (spouse or parent/child) significantly affected the BDI-II total score (p = 0.006). The functional disability significantly correlated with loss of appetite and loss of libido (p < 0.001). A high education, spiritual devotion, high ALSFRS, and the presence of the spouse as the caregiver were associated with the absence of depression.
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18
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Yalin N, Young AH. Pharmacological Treatment of Bipolar Depression: What are the Current and Emerging Options? Neuropsychiatr Dis Treat 2020; 16:1459-1472. [PMID: 32606699 PMCID: PMC7294105 DOI: 10.2147/ndt.s245166] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 04/15/2020] [Indexed: 12/15/2022] Open
Abstract
Depression accounts for the predominant burden associated with bipolar disorder. The identification and management of bipolar depression are challenging, since bipolar depression differs from unipolar depression, responding poorly to traditional antidepressants, which may also induce a switch to hypomania/mania, mixed states and/or cause rapid cycling. Current treatment options for bipolar depression are limited and guidelines vary greatly in their recommendations, reflecting gaps and inconsistencies in the current evidence base. Moreover, some treatment options, such as quetiapine and olanzapine-fluoxetine, although clearly efficacious, may be associated with adverse cardiometabolic side effects, which can be detrimental to the long-term physical health and well-being of patients, increasing the likelihood of treatment non-adherence and relapse. Evidence for some more recent therapeutic options, including lurasidone and cariprazine, suggests that patients' symptoms can be effectively managed without compromising their physical health. In addition, novel agents targeting alternative neurotransmitter pathways and inflammatory processes (such as ketamine and N-acetyl cysteine) are emerging as promising potential options for the treatment of bipolar depression in the future.
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Affiliation(s)
- Nefize Yalin
- Centre for Affective Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, London, UK
| | - Allan H Young
- Centre for Affective Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, London, UK
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19
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Bahji A, Ermacora D, Stephenson C, Hawken ER, Vazquez G. Comparative efficacy and tolerability of pharmacological treatments for the treatment of acute bipolar depression: A systematic review and network meta-analysis. J Affect Disord 2020; 269:154-184. [PMID: 32339131 DOI: 10.1016/j.jad.2020.03.030] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/12/2020] [Accepted: 03/12/2020] [Indexed: 12/14/2022]
Abstract
OBJECTIVE We investigated the comparative efficacy and tolerability of pharmacological treatment strategies for the treatment of acute bipolar depression. DATA SOURCES A systematic review and network meta-analysis was conducted by searching eight registries for published and unpublished, double-blind, randomized controlled trials of pharmacotherapies for the acute treatment of bipolar depression. DATA EXTRACTION AND SYNTHESIS PRISMA guidelines were used for abstracting data, while the Cochrane Risk of Bias Tool was used to assess data quality. Data extraction was done independently by two reviewers, with discrepancies resolved by consensus. Data were pooled using a random-effects model. MAIN OUTCOMES AND MEASURES Primary outcomes were efficacy (response and remission rate) and acceptability (completion of treatment and dropouts due to adverse events). Summary odds ratios (ORs) were estimated using pairwise and network meta-analysis with random effects. RESULTS Identified citations (4,404) included 50 trials comprising 11,448 participants. Escitalopram, phenelzine, moclobemide, carbamazepine, sertraline, lithium, paroxetine, aripiprazole, gabapentin and ziprasidone appear to be ineffective as compared to placebo in treatment of bipolar depression. Divalproex, olanzapine/fluoxetine, olanzapine, quetiapine, cariprazine, and lamotrigine, appear to be effective as compared to placebo in treatment of bipolar depression according to the network meta-analysis. Aripiprazole showed higher discontinuation rates versus placebo due to the appearance of any adverse event. Quetiapine was better than placebo at reducing treatment-emergent affective switches. For Bipolar I Disorder, cariprazine, fluoxetine, imipramine, lamotrigine, lurasidone, olanzapine-fluoxetine, and olanzapine were significantly better than placebo at response, while fluoxetine, imipramine, cariprazine, lurasidone, olanzapine-fluoxetine, and olanzapine were significantly better than placebo at remission. CONCLUSIONS AND RELEVANCE These results could serve evidence-based practice and inform patients, physicians, guideline developers, and policymakers on the relative benefits of the different antidepressants, antipsychotics, and mood-stabilizing agents for the treatment of bipolar depression. REGISTRATION PROSPERO (CRD42019122172).
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Affiliation(s)
- Anees Bahji
- Department of Psychiatry, Queen's University, Kingston, Ontario, Canada; Department of Public Health Sciences, Queen's University, Kingston, Ontario, Canada.
| | - Dylan Ermacora
- Department of Public Health Sciences, Queen's University, Kingston, Ontario, Canada
| | - Callum Stephenson
- School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada
| | - Emily R Hawken
- Department of Psychiatry, Queen's University, Kingston, Ontario, Canada; Providence Care Hospital, Kingston, Ontario, Canada
| | - Gustavo Vazquez
- Department of Psychiatry, Queen's University, Kingston, Ontario, Canada
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20
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Poletti S, Mazza MG, Vai B, Lorenzi C, Colombo C, Benedetti F. Proinflammatory Cytokines Predict Brain Metabolite Concentrations in the Anterior Cingulate Cortex of Patients With Bipolar Disorder. Front Psychiatry 2020; 11:590095. [PMID: 33363485 PMCID: PMC7753118 DOI: 10.3389/fpsyt.2020.590095] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 11/06/2020] [Indexed: 12/12/2022] Open
Abstract
Bipolar disorder (BD) is a severe psychiatric illness characterized by abnormalities in the immune/inflammatory function and in brain metabolism. Evidences suggest that inflammation may affect the levels of brain metabolites as measured by single-proton magnetic resonance spectroscopy (1H-MRS). The aim of the study was to investigate whether a wide panel of inflammatory markers (i.e., cytokines, chemokines, and growth factors) can predict brain metabolite concentrations of glutamate, myo-inositol, N-acetylaspartate, and glutathione in a sample of 63 bipolar patients and 49 healthy controls. Three cytokines influenced brain metabolite concentrations: IL-9 positively predicts glutamate, IL-1β positively predicts Myo-inositol, and CCL5 positively predicts N-acetylaspartate concentrations. Furthermore, patients showed higher concentrations of glutamate, Myo-inositol, and glutathione and lower concentrations of N-acetylaspartate in respect to healthy controls. Our results confirm that inflammation in BD alters brain metabolism, through mechanisms possibly including the production of reactive oxygen species and glia activation.
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Affiliation(s)
- Sara Poletti
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Mario Gennaro Mazza
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Benedetta Vai
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Cristina Lorenzi
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Cristina Colombo
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Francesco Benedetti
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
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21
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Sakurai H, Dording C, Yeung A, Foster S, Jain F, Chang T, Trinh NH, Bernard R, Boyden S, Iqbal SZ, Wilkinson ST, Mathew SJ, Mischoulon D, Fava M, Cusin C. Longer-term open-label study of adjunctive riluzole in treatment-resistant depression. J Affect Disord 2019; 258:102-108. [PMID: 31400624 PMCID: PMC6710149 DOI: 10.1016/j.jad.2019.06.065] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 05/03/2019] [Accepted: 06/30/2019] [Indexed: 12/28/2022]
Abstract
BACKGROUND While riluzole has been investigated for the treatment of depression, little is known about its longer-term efficacy and optimal treatment duration in treatment-resistant depression (TRD). The objective of this study is to characterize the longer-term outcome of adjunctive riluzole therapy for TRD in an open-label extension of an 8-week acute treatment trial. METHODS The data from 66 patients with TRD who received adjunctive riluzole in a 12-week open-label extension phase were analyzed. Response rates (⩾50% reduction in the Mongomery-Asberg Depression Rating Scale [MADRS] score), relapse rates (a MADRS score of ⩾22 in patients who had previously achieved response), and adverse events were examined in patients who had achieved response at the end of the acute phase and those who had not. RESULTS Among acute phase responders, the maintained response rate was 66.7% (8/12) and the relapse rate was 8.3% (1/12). In acute phase non-responders, the response rate was 24.1% (13/54). The most commonly reported adverse event was fatigue (9.1%). Three cases were considered serious adverse events; vomiting (n = 1), shortness of breath (n = 1), and aborted suicide attempt (n = 1). LIMITATIONS This longer-term study was open-label and uncontrolled. The sample size was relatively small. CONCLUSIONS Longer-term adjunctive riluzole appears relatively well tolerated and beneficial for maintaining previous response. Additionally, approximately one fourth of patients who did not respond to 8-week antidepressant treatment might respond if treated with riluzole for 12 weeks. Those findings warrant further investigation because adjunctive riluzole could represent an option for treatment of depression when standard antidepressants have failed.
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Affiliation(s)
- Hitoshi Sakurai
- Depression Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA,Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
| | - Christina Dording
- Depression Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Albert Yeung
- Depression Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Simmie Foster
- Depression Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Felipe Jain
- Depression Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Trina Chang
- Depression Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Nhi-Ha Trinh
- Depression Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Richard Bernard
- Depression Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Sean Boyden
- Depression Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Syed Z Iqbal
- Mental Health Care Line, Michael E. DeBakey VA Medical Center, Houston, TX, USA,Menninger Department of Psychiatry & Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
| | - Samuel T Wilkinson
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Sanjay J Mathew
- Mental Health Care Line, Michael E. DeBakey VA Medical Center, Houston, TX, USA,Menninger Department of Psychiatry & Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
| | - David Mischoulon
- Depression Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Maurizio Fava
- Depression Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Cristina Cusin
- Depression Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, 1 Bowdoin Square, 6th Floor, Boston, MA, USA.
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22
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The Effect of Glutamatergic Modulators on Extracellular Glutamate: How Does this Information Contribute to the Discovery of Novel Antidepressants? Curr Ther Res Clin Exp 2019; 91:25-32. [PMID: 31871505 PMCID: PMC6911922 DOI: 10.1016/j.curtheres.2019.100566] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 08/29/2019] [Indexed: 01/19/2023] Open
Abstract
The complexity of glutamatergic signaling challenges glutamate modulator usage. Functional biomarkers are needed to understand the MOA of glutamate modulators. Evaluating drug effect on EAATs' kinetics may add to antidepressant discovery.
Background In the search for new antidepressants, clinical researchers have been using drugs that simultaneously modulate multiple targets. During preclinical and clinical trials, the glutamatergic modulators riluzole and ketamine have received particular attention. Glutamatergic agents have a modulatory effect on synaptic transmission, so they can act on both neurons and astrocytes. In addition to influencing the quantity of glutamate released, these modulators can also affect the expression, localization, and functionality of glutamate-binding sites. Objective This review discusses the complexity of the glutamatergic system, the ambiguity of data regarding glutamate levels in patients with depression, as well as the mechanisms of action for riluzole and ketamine, which includes their relation to the physiology of glutamatergic transmission. The principal aim is to contribute to the development of novel glutamatergic antidepressant medications whilst emphasizing the need for innovative approaches that evaluate their effects on extracellular glutamate. Methods Literature was obtained via PubMed by searching the term depression in combination with each of the following terms: riluzole, ketamine, and glutamate. The search was restricted to full-text articles published in English between 1985 and 2018 relating to both the modulatory mechanisms of glutamatergic-binding proteins and the antidepressant actions of these medicines. Articles about mechanisms associated with synaptic plasticity and antidepressant effects were excluded. Results Although experimental data relates glutamatergic signaling to the pathophysiology of major depression and bipolar disorder, the role of glutamate—as well as its extracellular concentration in patients with said disorders—is still unclear. Riluzole's antidepressant action is ascribed to its capacity to reduce glutamate levels in the synaptic cleft, and ketamine's effect has been associated with increased extracellular glutamate levels. Conclusions The strategy of using glutamatergic modulators as therapeutic agents requires a better understanding of the role of glutamate in the pathophysiology of depression. Gaining such understanding is a challenge because it entails evaluating different targets as well as the effects of these modulators on the kinetics of glutamate uptake. Essentially, glutamate transport is a dynamic process and, currently, it is still necessary to develop new approaches to assay glutamate in the synaptic cleft. ORCID: 0000-0002-3358-6939.
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23
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Jha MK, Murrough JW. Psychopharmacology and Experimental Therapeutics for Bipolar Depression. FOCUS (AMERICAN PSYCHIATRIC PUBLISHING) 2019; 17:232-237. [PMID: 32047368 PMCID: PMC6999209 DOI: 10.1176/appi.focus.20190009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Bipolar disorder is a chronic illness that affects 2%-4% of U.S. adults during their lifetime. The course of bipolar disorder is commonly characterized by prolonged periods of depression interspersed with manic-hypomanic episodes. Management of depression among patients with bipolar disorder is challenging because of the limited number of medications currently approved by the Food and Drug Administration, the high proportion of patients who do not respond to these medications, and the metabolic and other side effects associated with long-term use of these medications. In addition to reviewing the clinical options available to patients with bipolar depression and their treatment providers, this article presents an evidence-based management approach and discusses the off-label uses of currently available treatments and experimental therapeutics under development.
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Affiliation(s)
- Manish K Jha
- Depression and Anxiety Center for Discovery and Treatment and Departments of Psychiatry and Neuroscience, Icahn School of Medicine at Mount Sinai, New York City
| | - James W Murrough
- Depression and Anxiety Center for Discovery and Treatment and Departments of Psychiatry and Neuroscience, Icahn School of Medicine at Mount Sinai, New York City
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24
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Wadhawan A, Stiller JW, Potocki E, Okusaga O, Dagdag A, Lowry CA, Benros ME, Postolache TT. Traumatic Brain Injury and Suicidal Behavior: A Review. J Alzheimers Dis 2019; 68:1339-1370. [DOI: 10.3233/jad-181055] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Abhishek Wadhawan
- Department of Psychiatry, Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, USA
- Saint Elizabeths Hospital, Psychiatry Residency Training Program, Washington, DC, USA
| | - John W. Stiller
- Department of Psychiatry, Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, USA
- Saint Elizabeths Hospital, Neurology Consultation Service, Washington, DC, USA
- Maryland State Athletic Commission, Baltimore, MD, USA
| | - Eileen Potocki
- VA Maryland Healthcare System, Baltimore VA Medical Center, Baltimore, MD, USA
| | - Olaoluwa Okusaga
- Department of Psychiatry, Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, USA
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
- Michael E DeBakey VA Medical Center, Houston, TX, USA
| | - Aline Dagdag
- Department of Psychiatry, Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Psychiatry, University of Maryland Medical Center, Baltimore, MD, USA
| | - Christopher A. Lowry
- Department of Integrative Physiology and Center for Neuroscience, University of Colorado Boulder, Boulder, CO, USA
- Department of Physical Medicine and Rehabilitation and Center for Neuroscience, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO, USA
| | - Michael E. Benros
- Mental Health Centre Copenhagen, Copenhagen University Hospital, Copenhagen, Denmark
| | - Teodor T. Postolache
- Department of Psychiatry, Mood and Anxiety Program, University of Maryland School of Medicine, Baltimore, MD, USA
- Rocky Mountain Mental Illness Research Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 19, Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Aurora, CO, USA
- Mental Illness Research, Education and Clinical Center (MIRECC), Veterans Integrated Service Network (VISN) 5, VA Capitol Health Care Network, Baltimore, MD, USA
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Nooraee N, Molenberghs G, Ormel J, Van den Heuvel ER. Strategies for handling missing data in longitudinal studies with questionnaires. J STAT COMPUT SIM 2018. [DOI: 10.1080/00949655.2018.1520854] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Nazanin Nooraee
- Department of Mathematics and Computer Science, Eindhoven University of Technology, Eindhoven, Netherlands
| | - Geert Molenberghs
- I-BioStat, Katholieke Universiteit Leuven, Leuven, Belgium
- I-BioStat, Universiteit Hasselt, Diepenbeek, Belgium
| | - Johan Ormel
- Interdisciplinary Center of Psychopathology and Emotion Regulation, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Edwin R. Van den Heuvel
- Department of Mathematics and Computer Science, Eindhoven University of Technology, Eindhoven, Netherlands
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White Matter Microstructure in Bipolar Disorder Is Influenced by the Interaction between a Glutamate Transporter EAAT1 Gene Variant and Early Stress. Mol Neurobiol 2018; 56:702-710. [DOI: 10.1007/s12035-018-1117-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 05/11/2018] [Indexed: 12/19/2022]
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A Randomized Placebo-Controlled Cross-Over Pilot Study of Riluzole for Drug-Refractory Irritability in Autism Spectrum Disorder. J Autism Dev Disord 2018; 48:3051-3060. [DOI: 10.1007/s10803-018-3562-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Yatham LN, Kennedy SH, Parikh SV, Schaffer A, Bond DJ, Frey BN, Sharma V, Goldstein BI, Rej S, Beaulieu S, Alda M, MacQueen G, Milev RV, Ravindran A, O'Donovan C, McIntosh D, Lam RW, Vazquez G, Kapczinski F, McIntyre RS, Kozicky J, Kanba S, Lafer B, Suppes T, Calabrese JR, Vieta E, Malhi G, Post RM, Berk M. Canadian Network for Mood and Anxiety Treatments (CANMAT) and International Society for Bipolar Disorders (ISBD) 2018 guidelines for the management of patients with bipolar disorder. Bipolar Disord 2018; 20:97-170. [PMID: 29536616 PMCID: PMC5947163 DOI: 10.1111/bdi.12609] [Citation(s) in RCA: 930] [Impact Index Per Article: 155.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 12/21/2017] [Indexed: 12/14/2022]
Abstract
The Canadian Network for Mood and Anxiety Treatments (CANMAT) previously published treatment guidelines for bipolar disorder in 2005, along with international commentaries and subsequent updates in 2007, 2009, and 2013. The last two updates were published in collaboration with the International Society for Bipolar Disorders (ISBD). These 2018 CANMAT and ISBD Bipolar Treatment Guidelines represent the significant advances in the field since the last full edition was published in 2005, including updates to diagnosis and management as well as new research into pharmacological and psychological treatments. These advances have been translated into clear and easy to use recommendations for first, second, and third- line treatments, with consideration given to levels of evidence for efficacy, clinical support based on experience, and consensus ratings of safety, tolerability, and treatment-emergent switch risk. New to these guidelines, hierarchical rankings were created for first and second- line treatments recommended for acute mania, acute depression, and maintenance treatment in bipolar I disorder. Created by considering the impact of each treatment across all phases of illness, this hierarchy will further assist clinicians in making evidence-based treatment decisions. Lithium, quetiapine, divalproex, asenapine, aripiprazole, paliperidone, risperidone, and cariprazine alone or in combination are recommended as first-line treatments for acute mania. First-line options for bipolar I depression include quetiapine, lurasidone plus lithium or divalproex, lithium, lamotrigine, lurasidone, or adjunctive lamotrigine. While medications that have been shown to be effective for the acute phase should generally be continued for the maintenance phase in bipolar I disorder, there are some exceptions (such as with antidepressants); and available data suggest that lithium, quetiapine, divalproex, lamotrigine, asenapine, and aripiprazole monotherapy or combination treatments should be considered first-line for those initiating or switching treatment during the maintenance phase. In addition to addressing issues in bipolar I disorder, these guidelines also provide an overview of, and recommendations for, clinical management of bipolar II disorder, as well as advice on specific populations, such as women at various stages of the reproductive cycle, children and adolescents, and older adults. There are also discussions on the impact of specific psychiatric and medical comorbidities such as substance use, anxiety, and metabolic disorders. Finally, an overview of issues related to safety and monitoring is provided. The CANMAT and ISBD groups hope that these guidelines become a valuable tool for practitioners across the globe.
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Affiliation(s)
- Lakshmi N Yatham
- Department of PsychiatryUniversity of British ColumbiaVancouverBCCanada
| | | | - Sagar V Parikh
- Department of PsychiatryUniversity of MichiganAnn ArborMIUSA
| | - Ayal Schaffer
- Department of PsychiatryUniversity of TorontoTorontoONCanada
| | - David J Bond
- Department of PsychiatryUniversity of MinnesotaMinneapolisMNUSA
| | - Benicio N Frey
- Department of Psychiatry and Behavioural NeurosciencesMcMaster UniversityHamiltonONCanada
| | - Verinder Sharma
- Departments of Psychiatry and Obstetrics & GynaecologyWestern UniversityLondonONCanada
| | | | - Soham Rej
- Department of PsychiatryMcGill UniversityMontrealQCCanada
| | - Serge Beaulieu
- Department of PsychiatryMcGill UniversityMontrealQCCanada
| | - Martin Alda
- Department of PsychiatryDalhousie UniversityHalifaxNSCanada
| | - Glenda MacQueen
- Department of PsychiatryUniversity of CalgaryCalgaryABCanada
| | - Roumen V Milev
- Departments of Psychiatry and PsychologyQueen's UniversityKingstonONCanada
| | - Arun Ravindran
- Department of PsychiatryUniversity of TorontoTorontoONCanada
| | | | - Diane McIntosh
- Department of PsychiatryUniversity of British ColumbiaVancouverBCCanada
| | - Raymond W Lam
- Department of PsychiatryUniversity of British ColumbiaVancouverBCCanada
| | - Gustavo Vazquez
- Departments of Psychiatry and PsychologyQueen's UniversityKingstonONCanada
| | - Flavio Kapczinski
- Department of Psychiatry and Behavioural NeurosciencesMcMaster UniversityHamiltonONCanada
| | | | - Jan Kozicky
- School of Population and Public HealthUniversity of British ColumbiaVancouverBCCanada
| | | | - Beny Lafer
- Department of PsychiatryUniversity of Sao PauloSao PauloBrazil
| | - Trisha Suppes
- Bipolar and Depression Research ProgramVA Palo AltoDepartment of Psychiatry & Behavioral Sciences Stanford UniversityStanfordCAUSA
| | - Joseph R Calabrese
- Department of PsychiatryUniversity Hospitals Case Medical CenterCase Western Reserve UniversityClevelandOHUSA
| | - Eduard Vieta
- Bipolar UnitInstitute of NeuroscienceHospital ClinicUniversity of BarcelonaIDIBAPS, CIBERSAMBarcelonaCataloniaSpain
| | - Gin Malhi
- Department of PsychiatryUniversity of SydneySydneyNSWAustralia
| | - Robert M Post
- Department of PsychiatryGeorge Washington UniversityWashingtonDCUSA
| | - Michael Berk
- Deakin UniveristyIMPACT Strategic Research CentreSchool of Medicine, Barwon HealthGeelongVic.Australia
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Fornaro M, Kardash L, Novello S, Fusco A, Anastasia A, De Berardis D, Perna G, Carta MG. Progress in bipolar disorder drug design toward the development of novel therapeutic targets: a clinician's perspective. Expert Opin Drug Discov 2018; 13:221-228. [PMID: 29357703 DOI: 10.1080/17460441.2018.1428554] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
INTRODUCTION Bipolar disorder (BD) is a considerable burden to the affected individual. The need for novel drug targets and improved drug design (DD) in BD is therefore clear. Areas covered: The following article provides a brief, narrative, clinician-oriented overview of the most promising novel pharmacological targets for BD along with a concise overview regarding the general DD process and the unmet needs relevant to BD. Expert opinion: A number of novel potential drug targets have been investigated. With the notable exception of the kynurenine pathway, available evidence is too scarce to highlight a definitive roadmap for forthcoming DD in BD. BD itself may present with different facets, as it is a polymorphic clinical spectrum. Therefore, promoting clinical-case stratification should be based on precision medicine, rather than on novel biological targets. Furthermore, the full release of raw study data to the scientific community and the development of uniform clinical trial standards (including more realistic outcomes) should be promoted to facilitate the DD process in BD.
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Affiliation(s)
- Michele Fornaro
- a Department of Neuroscience, Reproductive Sciences and Odontostomatology, Section of Psychiatry, University School of Medicine , "Federico II" University of Naples , Italy
| | - Lubna Kardash
- b Department of Internal Medicine , Wayne State University , Detroit , MI , USA
| | - Stefano Novello
- a Department of Neuroscience, Reproductive Sciences and Odontostomatology, Section of Psychiatry, University School of Medicine , "Federico II" University of Naples , Italy
| | - Andrea Fusco
- a Department of Neuroscience, Reproductive Sciences and Odontostomatology, Section of Psychiatry, University School of Medicine , "Federico II" University of Naples , Italy
| | - Annalisa Anastasia
- a Department of Neuroscience, Reproductive Sciences and Odontostomatology, Section of Psychiatry, University School of Medicine , "Federico II" University of Naples , Italy
| | - Domenico De Berardis
- c Department of Mental Health, Psychiatric Service of Diagnosis and Treatment , National Health Service, Hospital "G. Mazzini" , Teramo , Italy
| | - Giampaolo Perna
- d Department of Psychiatry and Neuropsychology , Maastricht University , Maastricht , Netherlands.,e Department of Clinical Neurosciences , FoRiPsi, Hermanas Hospitalarias-Villa San Benedetto Menni Hospital , Como , Italy.,f Department of Psychiatry and Behavioral Sciences, Leonard Miller School of Medicine , University of Miami , Miami , FL , USA
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Mathew SJ, Gueorguieva R, Brandt C, Fava M, Sanacora G. A Randomized, Double-Blind, Placebo-Controlled, Sequential Parallel Comparison Design Trial of Adjunctive Riluzole for Treatment-Resistant Major Depressive Disorder. Neuropsychopharmacology 2017; 42:2567-2574. [PMID: 28553836 PMCID: PMC5686483 DOI: 10.1038/npp.2017.106] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 05/01/2017] [Accepted: 05/10/2017] [Indexed: 12/21/2022]
Abstract
Riluzole is a glutamate-modulating agent with neuroprotective properties approved for use in amyotrophic lateral sclerosis. The efficacy and safety of riluzole vs placebo as an adjunct to antidepressant medication in outpatients with major depressive disorder (MDD) was examined in a 3-site, 8-week, randomized, double-blind, placebo-controlled, fixed-dose trial using a sequential parallel comparison design comprised of two phases of 4 weeks. Patients with MDD in a current major depressive episode (N=104) with an inadequate response to either a prospective or a historical trial of an antidepressant medication were randomized in a 2 : 3 : 3 ratio to the treatment sequences of riluzole/riluzole, placebo/placebo, and placebo/riluzole, respectively. The primary outcome was change in depression severity, as assessed by the Montgomery-Åsberg Depression Rating Scale (MADRS). Secondary efficacy outcomes included the response rate, defined as at least a 50% improvement in MADRS, Clinical Global Impressions severity and improvement subscales, and patient-reported measures of depression and cognitive function. Eighty-five patients completed the randomized treatment phases. Treatment groups did not differ in mean change in MADRS scores, response rate, or in any secondary efficacy outcomes. Riluzole was generally well tolerated, with a side effect profile consistent with its clinical use. In conclusion, a fixed dose of riluzole (100 mg/day) did not show adjunctive antidepressant efficacy compared to placebo. The trial was adequately powered to detect a moderate riluzole effect, and the risk for exaggerated placebo responses was mitigated. The lack of efficacy suggests that mechanisms underlying riluzole's neuroprotective effects are insufficient for clinical response in treatment-resistant depression.
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Affiliation(s)
- Sanjay J Mathew
- Mental Health Care Line, Michael E. DeBakey VA Medical Center, Houston, TX, USA,Menninger Department of Psychiatry & Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA,Mental Health Care Line, Michael E. DeBakey VA Medical Center or Menninger Department of Psychiatry & Behavioral Sciences, Baylor College of Medicine, One Baylor Plaza; MS: BCM350, Houston, TX 77030, USA, Tel: +713 798 5877, Fax: +713 798 3465, E-mail:
| | - Ralitza Gueorguieva
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA,Department of Biostatistics, Yale School of Public Health, New Haven, CT, USA
| | - Cynthia Brandt
- Departments of Emergency Medicine and Anesthesiology, Yale University School of Medicine, New Haven, CT, USA
| | - Maurizio Fava
- Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Gerard Sanacora
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
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Sarkar M, Grossman RG, Toups EG, Chow DSL. UPLC-MS/MS assay of riluzole in human plasma and cerebrospinal fluid (CSF): Application in samples from spinal cord injured patients. J Pharm Biomed Anal 2017; 146:334-340. [PMID: 28917164 DOI: 10.1016/j.jpba.2017.08.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 08/29/2017] [Accepted: 08/29/2017] [Indexed: 10/18/2022]
Abstract
In the present study, a sensitive and robust LC-MS/MS method has been developed and validated for the quantification of riluzole in human plasma and cerebrospinal fluid (CSF) in clinical samples from patients with spinal cord injury (SCI). Riluzole and its labeled internal standard (IS) were isolated from plasma and CSF by liquid-liquid extraction using ethyl acetate. Riluzole (m/z 235→166) and IS (m/z 238→169) were detected by electrospray ionization (ESI) using multiple reaction monitoring (MRM) in a positive mode. The assay was linear in the concentration range of 0.5 (LLOQ, signal/noise ratio>10)-800ng/ml in plasma, and 1.0 (LLOQ)-800ng/ml in CSF samples. The intra- and inter-day accuracy in plasma were 94.2-110.0% and 97.8-102.0%, respectively, and those in CSF were 87.6-105.1% and 91.9-98.8%, respectively. The intra- and inter-day precision were 2.2-7.2% and 4.0-9.1%, respectively, in plasma, and 1.4-14.1% and 2.6-11.5%, respectively in CSF. Matrix effect was negligible from both matrices with signal percentages of 97.6-100.6% in plasma and 99.4-106.4% in CSF. The recoveries were >75% in plasma, >84% in CSF with low protein (53.9mg/dl), and >68% in CSF with high protein (348.2mg/dl). This method was successfully applied to quantify riluzole concentrations in plasma and CSF from patients with SCI.
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Affiliation(s)
- Mahua Sarkar
- Department of Pharmacological and Pharmaceutical Sciences, University of Houston, Houston, TX, 77030, USA.
| | - Robert G Grossman
- Department of Neurosurgery, Houston Methodist Hospital, Neurological Institute, Houston, TX, 77030, USA
| | - Elizabeth G Toups
- Department of Neurosurgery, Houston Methodist Hospital, Neurological Institute, Houston, TX, 77030, USA
| | - Diana S-L Chow
- Department of Pharmacological and Pharmaceutical Sciences, University of Houston, Houston, TX, 77030, USA.
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Jeon SW, Kim YK. Inflammation-induced depression: Its pathophysiology and therapeutic implications. J Neuroimmunol 2017; 313:92-98. [PMID: 29153615 DOI: 10.1016/j.jneuroim.2017.10.016] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 10/15/2017] [Accepted: 10/27/2017] [Indexed: 02/06/2023]
Abstract
Inflammation is not the only cause of depression and cannot explain its entire pathophysiology, but it is an important pathogenic factor that explains one possible mechanism of depression, with the kynurenine (KYN) pathway of tryptophan at its center. In particular, greater impairment seems to exist in the KYN pathway in inflammation-induced depression related to immunotherapy, autoimmune disease, and infection. In patients with these conditions, immunopharmacology is likely to be an important therapy. To develop this therapy, clear evidence of the immune-KYN pathway must be established via multiple types of experiments. This paper reviews the body of evidence, not only for the action of tryptophan (TRY) and consequent serotonin depletion, but also for the detrimental effects of TRY catabolites and the key enzymes in the KYN pathway that play important roles in the pathophysiology of inflammation-induced depression. In addition, this paper explores a potential treatment strategy for inflammation-induced depression using KYN metabolism.
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Affiliation(s)
- Sang Won Jeon
- Department of Psychiatry, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Yong-Ku Kim
- Department of Psychiatry, College of Medicine, Korea University, Ansan Hospital, Ansan, Republic of Korea.
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Abstract
BACKGROUND Glutamatergic system abnormalities are implicated in the pathophysiology and treatment of both major depressive disorder and bipolar depression (BDep). Subsequent to studies demonstrating the rapid and robust antidepressant effects of ketamine, an N-methyl-D-aspartate receptor antagonist, other glutamatergic modulators are now being studied in clinical trials of mood disorders. A previous open-label study found that riluzole, administered in combination with the mood stabilizer lithium, had antidepressant effects. METHODS We conducted a randomized, double-blind, placebo-controlled trial of riluzole monotherapy for the treatment of BDep. Nineteen subjects aged 18 to 70 years with bipolar disorder currently experiencing a depressive episode were tapered off of excluded medications and randomized to receive riluzole (50-200 mg/d) or placebo for 8 weeks. Rating scale scores (Montgomery-Åsberg Depression Rating Scale, Hamilton Rating Scale for Depression, Hamilton Rating Scale for Anxiety, and Young Mania Rating Scale) were obtained weekly. RESULTS No significant differences in depressive symptoms were observed between subjects treated with riluzole and those receiving placebo (P = 0.12). Anxiety scores were significantly lower in the placebo group (P = 0.046). An interim analysis was conducted that resulted in stopping the study because of futility; no subjects had achieved treatment response. CONCLUSIONS Although we found no change in severity of depressive symptoms in BDep patients receiving riluzole compared with placebo, this trial was limited by the relatively high number of subject withdrawals and the small sample size. Thus, while riluzole monotherapy did not demonstrate efficacy for BDep, further studies examining riluzole as adjunctive therapy for this disorder may be warranted.Clinical Trials Identifier NCT00054704.
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Machado-Vieira R, Henter ID, Zarate CA. New targets for rapid antidepressant action. Prog Neurobiol 2017; 152:21-37. [PMID: 26724279 PMCID: PMC4919246 DOI: 10.1016/j.pneurobio.2015.12.001] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 11/30/2015] [Accepted: 12/07/2015] [Indexed: 02/08/2023]
Abstract
Current therapeutic options for major depressive disorder (MDD) and bipolar disorder (BD) are associated with a lag of onset that can prolong distress and impairment for patients, and their antidepressant efficacy is often limited. All currently approved antidepressant medications for MDD act primarily through monoaminergic mechanisms. Glutamate is the major excitatory neurotransmitter in the central nervous system, and glutamate and its cognate receptors are implicated in the pathophysiology of MDD, and in the development of novel therapeutics for this disorder. The rapid and robust antidepressant effects of the N-methyl-d-aspartate (NMDA) antagonist ketamine were first observed in 2000. Since then, other NMDA receptor antagonists have been studied in MDD. Most have demonstrated relatively modest antidepressant effects compared to ketamine, but some have shown more favorable characteristics. This article reviews the clinical evidence supporting the use of novel glutamate receptor modulators with direct affinity for cognate receptors: (1) non-competitive NMDA receptor antagonists (ketamine, memantine, dextromethorphan, AZD6765); (2) subunit (GluN2B)-specific NMDA receptor antagonists (CP-101,606/traxoprodil, MK-0657); (3) NMDA receptor glycine-site partial agonists (GLYX-13); and (4) metabotropic glutamate receptor (mGluR) modulators (AZD2066, RO4917523/basimglurant). We also briefly discuss several other theoretical glutamate receptor targets with preclinical antidepressant-like efficacy that have yet to be studied clinically; these include α-amino-3-hydroxyl-5-methyl-4-isoxazoleproprionic acid (AMPA) agonists and mGluR2/3 negative allosteric modulators. The review also discusses other promising, non-glutamatergic targets for potential rapid antidepressant effects, including the cholinergic system (scopolamine), the opioid system (ALKS-5461), corticotropin releasing factor (CRF) receptor antagonists (CP-316,311), and others.
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Affiliation(s)
- Rodrigo Machado-Vieira
- Experimental Therapeutics and Pathophysiology Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA.
| | - Ioline D Henter
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA
| | - Carlos A Zarate
- Experimental Therapeutics and Pathophysiology Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA
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Lener MS, Kadriu B, Zarate CA. Ketamine and Beyond: Investigations into the Potential of Glutamatergic Agents to Treat Depression. Drugs 2017; 77:381-401. [PMID: 28194724 PMCID: PMC5342919 DOI: 10.1007/s40265-017-0702-8] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Clinical and preclinical studies suggest that dysfunction of the glutamatergic system is implicated in mood disorders such as major depressive disorder and bipolar depression. In clinical studies of individuals with major depressive disorder and bipolar depression, rapid reductions in depressive symptoms have been observed in response to subanesthetic-dose ketamine, an agent whose mechanism of action involves the modulation of glutamatergic signaling. The findings from these studies have prompted the repurposing and/or development of other glutamatergic modulators for antidepressant efficacy, both as monotherapy or as an adjunct to conventional monoaminergic antidepressants. This review highlights the evidence supporting the antidepressant effects of subanesthetic-dose ketamine as well as other glutamatergic modulators, such as D-cycloserine, riluzole, CP-101,606, CERC-301 (previously known as MK-0657), basimglurant, JNJ-40411813, dextromethorphan, nitrous oxide, GLYX-13, and esketamine.
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Affiliation(s)
- Marc S Lener
- Experimental Therapeutics and Pathophysiology Branch, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, 10 Center Drive, Building 10/CRC, Room 7-5545, Bethesda, MD, USA.
| | - Bashkim Kadriu
- Experimental Therapeutics and Pathophysiology Branch, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, 10 Center Drive, Building 10/CRC, Room 7-5545, Bethesda, MD, USA
| | - Carlos A Zarate
- Experimental Therapeutics and Pathophysiology Branch, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, 10 Center Drive, Building 10/CRC, Room 7-5545, Bethesda, MD, USA
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Data-Franco J, Singh A, Popovic D, Ashton M, Berk M, Vieta E, Figueira ML, Dean OM. Beyond the therapeutic shackles of the monoamines: New mechanisms in bipolar disorder biology. Prog Neuropsychopharmacol Biol Psychiatry 2017; 72:73-86. [PMID: 27616052 DOI: 10.1016/j.pnpbp.2016.09.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 08/31/2016] [Accepted: 09/06/2016] [Indexed: 02/08/2023]
Abstract
Multiple novel biological mechanisms putatively involved in the etiology of bipolar disorders are being explored. These include oxidative stress, altered glutamatergic neurotransmission, mitochondrial dysfunction, inflammation, cell signaling, apoptosis and impaired neurogenesis. Important clinical translational potential exists for such mechanisms to help underpin development of novel therapeutics - much needed given limitations of current therapies. These new mechanisms also help improve our understanding of how current therapeutics might exert their effects. Lithium, for example, appears to have antioxidant, immunomodulatory, signaling, anti-apoptotic and neuroprotective properties. Similar properties have been attributed to other mood stabilizers such as valproate, lamotrigine, and quetiapine. Perhaps of greatest translational value has been the recognition of such mechanisms leading to the emergence of novel therapeutics for bipolar disorders. These include the antioxidant N-acetylcysteine, the anti-inflammatory celecoxib, and ketamine - with effects on the glutamatergic system and microglial inhibition. We review these novel mechanisms and emerging therapeutics, and comment on next steps in this space.
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Affiliation(s)
- João Data-Franco
- Psychiatric Department, Hospital Beatriz Ângelo, Loures, Portugal; University of Lisbon, Faculty of Medicine, Lisbon, Portugal.
| | - Ajeet Singh
- Deakin University, IMPACT Strategic Research Centre, School of Medicine, Barwon Health, VIC, Australia
| | - Dina Popovic
- Bipolar Disorders Program, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain; Psychiatry Division, The Chaim Sheba Medical Center, Ramat-Gan, Israel
| | - Melanie Ashton
- Deakin University, IMPACT Strategic Research Centre, School of Medicine, Barwon Health, VIC, Australia; Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
| | - Michael Berk
- Deakin University, IMPACT Strategic Research Centre, School of Medicine, Barwon Health, VIC, Australia; Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia; Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia; Orygen Youth Health Research Centre, Parkville, VIC, Australia
| | - Eduard Vieta
- Bipolar Disorders Program, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain
| | - M L Figueira
- University of Lisbon, Faculty of Medicine, Lisbon, Portugal
| | - Olivia M Dean
- Deakin University, IMPACT Strategic Research Centre, School of Medicine, Barwon Health, VIC, Australia; Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia; Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia
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Cetin M, Aricioglu F. Unmet needs in psychiatry and emerging novel pharmacological agents. ACTA ACUST UNITED AC 2016. [DOI: 10.5455/bcp.20130927064824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Mesut Cetin
- Klinik Psikofarmakoloji Bülteni-Bulletin of Clinical Pychopharmacology, GATA Haydarpasa Training Hospital, Department of Psychiatry, Istanbul-Turkey
| | - Feyza Aricioglu
- Marmara University, School of Pharmacy Department of Pharmacology and Psychopharmacology Research Unit, Istanbul-Turkey
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38
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Abstract
Obsessive-compulsive disorder (OCD) is one of the most common comorbidities in bipolar disorder (BD). Clinicians often get perplexed in making treatment decisions when encountering comorbid OCD and BD as treatment of OCD by pharmacotherapy may induce or exacerbate mood instability and psychotherapeutic approaches for OCD may not be feasible in acute manic or depressive state of BD. In this study, we reviewed literature, whether existing guideline-based treatments of BD may be effective in OCD and whether newer agents will be of use for treating this comorbidity. We could find that treatment of such comorbid disorder is largely understudied. Adjuvant topiramate or olanzapine- selective serotonin reuptake inhibitor/clomipramine combination along with mood stabilizer is found to be effective for treating OCD in BD. Use of other conventional pharmacological agents and psychotherapy for treating comorbid OCD in BD lacks evidence and is limited to case reports. Our review also highlights the need for further studies regarding the treatment strategies in this highly prevalent comorbid disorder.
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Affiliation(s)
- Firoz Kazhungil
- Department of Psychiatry, Government Medical College, Kozhikode, Kerala, India
| | - E Mohandas
- Chief Consultant Psychiatrist, Sun Medical and Research Centre, Trissur, Kerala, India
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Salardini E, Zeinoddini A, Mohammadinejad P, Khodaie-Ardakani MR, Zahraei N, Zeinoddini A, Akhondzadeh S. Riluzole combination therapy for moderate-to-severe major depressive disorder: A randomized, double-blind, placebo-controlled trial. J Psychiatr Res 2016; 75:24-30. [PMID: 26800392 DOI: 10.1016/j.jpsychires.2016.01.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 12/13/2015] [Accepted: 01/04/2016] [Indexed: 02/08/2023]
Abstract
Recent evidences suggest that glutamatergic dysregulation implicated in neural plasticity and cellular resilience may contribute to the pathophysiology of Major Depressive Disorder (MDD). Riluzole, which exerts its effect by targeting glutamate neurotransmission, has shown antidepressant effect in recent preclinical, observational and open label studies. This study aimed to assess the efficacy and tolerability of riluzole in patients with MDD. Sixty-four inpatients with diagnosis of moderate to severe major depressive disorder participated in a parallel, randomized, controlled trial, and sixty patients underwent 6 weeks treatment with either riluzole (50 mg/bid) plus citalopram (40 mg/day) or placebo plus citalopram (40 mg/day). All participants were inpatients for the whole duration of the study. Patients were assessed using Hamilton depression rating scale (HDRS) at baseline and weeks 2, 4 and 6. The primary outcome measure was to assess the efficacy of riluzole compared to placebo in improving the depressive symptoms. General linear model repeated measures demonstrated significant effect for time × treatment interaction on HDRS [F (1.86, 107.82) = 8.63, p < 0.001]. Significantly greater improvement was observed in HDRS scores in the riluzole group compared to the placebo group from baseline HDRS score at weeks 2, 4 and 6 (p < 0.001, p = 0.001, p = 0.002, respectively). Significantly greater response with greater speed to treatment was observed in the riluzole group than the placebo group. No serious adverse event occurred. This study showed a favorable safety and efficacy profile in patients with major depressive disorder. Larger controlled studies with longer treatment periods are needed to investigate long term safety, efficacy and optimal dosing.
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Affiliation(s)
- Elaheh Salardini
- Psychiatric Research Center, Roozbeh Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Atefeh Zeinoddini
- Psychiatric Research Center, Roozbeh Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Payam Mohammadinejad
- Psychiatric Research Center, Roozbeh Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Nagmeh Zahraei
- Psychiatric Research Center, Roozbeh Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Arefeh Zeinoddini
- Psychiatric Research Center, Roozbeh Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Shahin Akhondzadeh
- Psychiatric Research Center, Roozbeh Hospital, Tehran University of Medical Sciences, Tehran, Iran.
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Remus JL, Dantzer R. Inflammation Models of Depression in Rodents: Relevance to Psychotropic Drug Discovery. Int J Neuropsychopharmacol 2016; 19:pyw028. [PMID: 27026361 PMCID: PMC5043641 DOI: 10.1093/ijnp/pyw028] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 03/23/2016] [Indexed: 01/06/2023] Open
Abstract
Inflammation and depression are closely inter-related; inflammation induces symptoms of depression and, conversely, depressed mood and stress favor an inflammatory phenotype. The mechanisms that mediate the ability of inflammation to induce symptoms of depression are intensively studied at the preclinical level. This review discusses how it has been possible to build animal models of inflammation-induced depression based on clinical data and to explore critical mechanisms downstream of inflammation. Namely, we focus on the ability of inflammation to increase the activity of the tryptophan-degrading enzyme, indoleamine 2,3 dioxygenase, which leads to the production of kynurenine and downstream neuroactive metabolites. By acting on glutamatergic neurotransmission, these neuroactive metabolites play a key role in the development of depression-like behaviors. An important outcome of the preclinical research on inflammation-induced depression is the identification of potential novel targets for antidepressant treatments, which include targeting the kynurenine system and production of downstream metabolites, altering transport of kynurenine into the brain, and modulating glutamatergic transmission.
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Affiliation(s)
- Jennifer L Remus
- Laboratory of Neuroimmunology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| | - Robert Dantzer
- Laboratory of Neuroimmunology, The University of Texas MD Anderson Cancer Center, Houston, Texas
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Brady RO, Keshavan M. Emergent treatments based on the pathophysiology of bipolar disorder: A selective review. Asian J Psychiatr 2015; 18:15-21. [PMID: 26525885 PMCID: PMC4745256 DOI: 10.1016/j.ajp.2015.07.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 07/08/2015] [Accepted: 07/10/2015] [Indexed: 12/20/2022]
Abstract
Bipolar disorder is a chronic psychiatric disorder that is a cause of significant symptomatology even in the setting of optimal treatment. Most current treatments are developed from serendipity, and not based on known pathophysiology. In this review we examine a number of somatic and pharmacologic therapies that are poised to become part of the armamentarium of interventions to treat bipolar illness. As a group, these interventions are derived from a growing understanding of the biological underpinnings of bipolar disorders. We will look at emergent treatments based on our understanding of the molecular biology, neuroanatomy, and the genetics of bipolar disorder.
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Affiliation(s)
- Roscoe O Brady
- Department of Psychiatry, Beth-Israel Deaconess Medical Center, Boston, MA, United States; Department of Psychiatry, Harvard Medical School, Boston, MA, United States.
| | - Matcheri Keshavan
- Department of Psychiatry, Beth-Israel Deaconess Medical Center, Boston, MA, United States; Department of Psychiatry, Harvard Medical School, Boston, MA, United States
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Pittenger C, Bloch MH, Wasylink S, Billingslea E, Simpson R, Jakubovski E, Kelmendi B, Sanacora G, Coric V. Riluzole augmentation in treatment-refractory obsessive-compulsive disorder: a pilot randomized placebo-controlled trial. J Clin Psychiatry 2015; 76. [PMID: 26214725 PMCID: PMC4560666 DOI: 10.4088/jcp.14m09123] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Obsessive-compulsive disorder (OCD) affects approximately 2.5% of the population and is associated with significant morbidity. Many patients receive little benefit from the best available treatments, and even those who do respond often suffer from significant residual symptoms. Convergent evidence suggests that abnormalities in glutamate homeostasis and neurotransmission may contribute to OCD and that glutamate-modulating medications may be of benefit in patients whose symptoms are refractory to standard interventions. Small open-label trials of augmentation of serotonin reuptake inhibitor (SRI) pharmacotherapy with the glutamate modulator riluzole have suggested benefit in adults with refractory symptoms. We report a pilot randomized placebo-controlled trial of riluzole augmentation of ongoing SRI treatment in SRI-refractory patients. METHOD Outpatients (n = 27) and inpatients (n = 11) with DSM-IV OCD on stable SRI pharmacotherapy were randomized between November 2006 and December 2012 to receive riluzole 50 mg or placebo twice a day and followed for 12 weeks after a 2-week placebo lead-in phase. RESULTS Riluzole was well tolerated; 1 patient experienced moderate nausea, but none discontinued treatment due to side effects. While there was nominally greater Y-BOCS improvement in the riluzole group (our primary outcome) compared to placebo, it did not reach statistical significance. In the outpatient subsample, a trend suggesting benefit from riluzole augmentation for obsessions (P = .056, 2-tailed, uncorrected) was found in a secondary analysis. Among outpatients, more achieved at least a partial response (> 25% improvement) with riluzole than with placebo (P = .02 in a secondary analysis). CONCLUSIONS Riluzole may be of benefit to a subset of patients. Larger samples would be required to detect effects of the order suggested by the nominal improvement in our outpatient subsample. TRIAL REGISTRATION ClinicalTrials.gov identifier: NCT00523718.
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Affiliation(s)
| | - Michael H. Bloch
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT,Yale Child Study Center, Yale University School of Medicine, New Haven, CT
| | - Suzanne Wasylink
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT
| | - Eileen Billingslea
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT
| | - Ryan Simpson
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT
| | - Ewgeni Jakubovski
- Yale Child Study Center, Yale University School of Medicine, New Haven, CT
| | - Ben Kelmendi
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT
| | - Gerard Sanacora
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT
| | - Vladimir Coric
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT
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Miller OH, Moran JT, Hall BJ. Two cellular hypotheses explaining the initiation of ketamine's antidepressant actions: Direct inhibition and disinhibition. Neuropharmacology 2015. [PMID: 26211972 DOI: 10.1016/j.neuropharm.2015.07.028] [Citation(s) in RCA: 143] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A single, low dose of ketamine evokes antidepressant actions in depressed patients and in patients with treatment-resistant depression (TRD). Unlike classic antidepressants, which regulate monoamine neurotransmitter systems, ketamine is an antagonist of the N-methyl-D-aspartate (NMDA) family of glutamate receptors. The effectiveness of NMDAR antagonists in TRD unveils a new set of targets for therapeutic intervention in major depressive disorder (MDD) and TRD. However, a better understanding of the cellular mechanisms underlying these effects is required for guiding future therapeutic strategies, in order to minimize side effects and prolong duration of efficacy. Here we review the evidence for and against two hypotheses that have been proposed to explain how NMDAR antagonism initiates protein synthesis and increases excitatory synaptic drive in corticolimbic brain regions, either through selective antagonism of inhibitory interneurons and cortical disinhibition, or by direct inhibition of cortical pyramidal neurons. This article is part of the Special Issue entitled 'Synaptopathy--from Biology to Therapy'.
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Affiliation(s)
- Oliver H Miller
- Neuroscience Program, Tulane University, School of Science and Engineering, Tulane University, New Orleans, LA, 70118, USA.
| | - Jacqueline T Moran
- Neuroscience Program, Tulane University, School of Science and Engineering, Tulane University, New Orleans, LA, 70118, USA.
| | - Benjamin J Hall
- Neuroscience Program, Tulane University, School of Science and Engineering, Tulane University, New Orleans, LA, 70118, USA.
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Investigating the mechanism(s) underlying switching between states in bipolar disorder. Eur J Pharmacol 2015; 759:151-62. [PMID: 25814263 DOI: 10.1016/j.ejphar.2015.03.019] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 03/03/2015] [Accepted: 03/12/2015] [Indexed: 12/12/2022]
Abstract
Bipolar disorder (BD) is a unique disorder that transcends domains of function since the same patient can exhibit depression or mania, states with polar opposite mood symptoms. During depression, people feel helplessness, reduced energy, and risk aversion, while with mania behaviors include grandiosity, increased energy, less sleep, and risk preference. The neural mechanism(s) underlying each state are gaining clarity, with catecholaminergic disruption seen during mania, and cholinergic dysfunction during depression. The fact that the same patient cycles/switches between these states is the defining characteristic of BD however. Of greater importance therefore, is the mechanism(s) underlying cycling from one state - and its associated neural changes - to another, considered the 'holy grail' of BD research. Herein, we review studies investigating triggers that induce switching to these states. By identifying such triggers, researchers can study neural mechanisms underlying each state and importantly how such mechanistic changes can occur in the same subject. Current animal models of this switch are also discussed, from submissive- and dominant-behaviors to kindling effects. Focus however, is placed on how seasonal changes can induce manic and depressive states in BD sufferers. Importantly, changing photoperiod lengths can induce local switches in neurotransmitter expression in normal animals, from increased catecholaminergic expression during periods of high activity, to increased somatostatin and corticotrophin releasing factor during periods of low activity. Identifying susceptibilities to this switch would enable the development of targeted animal models. From animal models, targeted treatments could be developed and tested that would minimize the likelihood of switching.
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Konstantakopoulos G, Dimitrakopoulos S, Michalopoulou PG. Drugs under early investigation for the treatment of bipolar disorder. Expert Opin Investig Drugs 2015; 24:477-90. [DOI: 10.1517/13543784.2015.1019061] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- George Konstantakopoulos
- 1University of Athens, Eginition Hospital, First Department of Psychiatry, 72-74 Vas. Sofias Avenue, 11528, Athens, Greece ;
- 2Institute of Psychiatry, Psychology and Neuroscience, King’s College London, Department of Psychosis Studies, London, UK
| | - Stefanos Dimitrakopoulos
- 1University of Athens, Eginition Hospital, First Department of Psychiatry, 72-74 Vas. Sofias Avenue, 11528, Athens, Greece ;
| | - Panayiota G Michalopoulou
- 2Institute of Psychiatry, Psychology and Neuroscience, King’s College London, Department of Psychosis Studies, London, UK
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DeWilde KE, Levitch CF, Murrough JW, Mathew SJ, Iosifescu DV. The promise of ketamine for treatment-resistant depression: current evidence and future directions. Ann N Y Acad Sci 2015; 1345:47-58. [PMID: 25649308 DOI: 10.1111/nyas.12646] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Major depressive disorder (MDD) is one of the most disabling diseases worldwide and is becoming a significant public health threat. Current treatments for MDD primarily consist of monoamine-targeting agents and have limited efficacy. However, the glutamate neurotransmitter system has recently come into focus as a promising alternative for novel antidepressant treatments. We review the current data on the glutamate NMDA receptor antagonist ketamine, which has been shown in clinical trials to act as a rapid antidepressant in MDD. We also examine ketamine efficacy on dimensions of psychopathology, including anhedonia, cognition, and suicidality, consistent with the NIMH Research Domain Criteria initiative. Other aspects of ketamine reviewed in this paper include safety and efficacy, different administration methods, and the risks of misuse of ketamine outside of medical settings. Finally, we conclude with a discussion of glutamatergic agents other than ketamine currently being tested as novel antidepressants.
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Affiliation(s)
- Kaitlin E DeWilde
- Mood and Anxiety Disorders Program, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Cara F Levitch
- Mood and Anxiety Disorders Program, Icahn School of Medicine at Mount Sinai, New York, New York
| | - James W Murrough
- Mood and Anxiety Disorders Program, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Sanjay J Mathew
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas
| | - Dan V Iosifescu
- Mood and Anxiety Disorders Program, Icahn School of Medicine at Mount Sinai, New York, New York
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47
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Ketamine and other potential glutamate antidepressants. Psychiatry Res 2015; 225:1-13. [PMID: 25467702 DOI: 10.1016/j.psychres.2014.10.028] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Revised: 09/29/2014] [Accepted: 10/28/2014] [Indexed: 11/24/2022]
Abstract
The need for rapid acting antidepressants is widely recognised. There has been much interest in glutamate mechanisms in major depressive disorder (MDD) as a promising target for the development of new antidepressants. A single intravenous infusion of ketamine, a N-methyl-d-aspartate (NMDA) receptor antagonist anaesthetic agent, can alleviate depressive symptoms in patients within hours of administration. The mechanism of action appears to be in part through glutamate release onto non-NMDA receptors including α-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) and metabotropic receptors. However these are also reported effects on 5-HT, dopamine and intracellular effects on the mammalian target of rapamycin (mTOR) pathway. The effects of SSRI (Selective Serotonin Reuptake Inhibitor) antidepressants may also involve alterations in NMDA function. The article reviews the effect of current antidepressants on NMDA and examines the efficacy and mechanism of ketamine. Response to ketamine is also discussed and comparison with other glutamate drugs including lamotrigine, amantadine, riluzole, memantine, traxoprodil, GLYX-13, MK-0657, RO4917523, AZD2066 and Coluracetam. Future studies need to link the rapid antidepressant effects seen with ketamine to inflammatory theories in MDD.
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Glutamate transporter 1-mediated antidepressant-like effect in a rat model of chronic unpredictable stress. ACTA ACUST UNITED AC 2014; 34:838-844. [PMID: 25480579 DOI: 10.1007/s11596-014-1362-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 11/12/2014] [Indexed: 12/12/2022]
Abstract
In recent years, more attention has been paid to the role of the glutamate transporter 1 (GLT-1, EAAT2) in major depressive disorder (MDD). However, experimental data on brain GLT-1 levels are, to some extent, inconsistent in human postmortem and animal studies. These discrepancies imply that the role of GLT-1 in the pathophysiology of MDD and the action of antidepressants remain obscure. This work was designed to study the impact of chronic unpredictable stress (CUS) for 2 sessions per day for 35 days and four weeks of fluoxetine (FLX) on depressive-like behaviors in rats, as well as the concomitant expression of the GLT-1 protein in the hippocampus. Behavioral changes were assessed by the sucrose preference and open field tests. GLT-1 levels were detected by immunohistchemistry and Western blot analysis. Our study demonstrated that the animals exposed to CUS showed depressive-like behaviors and exhibited a significant decrease in GLT-1 expression in the hippocampus. Chronic FLX treatment reversed the behavioral deficits and the CUS-induced decrease in GLT-1 levels. Taken together, our results support the reduction of GLT-1 in human postmortem studies in MDD and suggest that GLT-1 may be involved in the antidepressant activity of FLX. Our studies further support the notion that GLT-1 is an attractive candidate molecule associated with the fundamental processes of MDD and may be a potential, and novel pharmacological target for the treatment of MDD.
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Frye MA, Prieto ML, Bobo WV, Kung S, Veldic M, Alarcon RD, Moore KM, Choi DS, Biernacka JM, Tye SJ. Current landscape, unmet needs, and future directions for treatment of bipolar depression. J Affect Disord 2014; 169 Suppl 1:S17-23. [PMID: 25533910 DOI: 10.1016/s0165-0327(14)70005-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 08/08/2014] [Accepted: 09/03/2014] [Indexed: 12/31/2022]
Abstract
BACKGROUND Depression is the predominant pole of illness disability in bipolar disorder and, compared with acute mania, has less systematic research guiding treatment development. The aim of this review is to present the therapeutic options currently available for managing bipolar depression and to highlight areas of unmet need and future research. METHODS Literature search of PubMed, PsycINFO, and Cochrane databases and bibliographies from 2000 to August 2013 for treatments that have regulatory approval for bipolar depression or early controlled preliminary data on efficacy. RESULTS Treatment options for bipolar depression have increased over the last decade, most notably with regulatory approval for olanzapine/fluoxetine combination, quetiapine, and lurasidone. Conventional mood stabilizers lamotrigine and divalproex have meta-analyses suggesting acute antidepressant response. Manual-based psychotherapies also appear to be effective in treating bipolar depression. The therapeutic utility of unimodal antidepressants, as a class, for the treatment of patients with bipolar depression, as a group, remains to be confirmed. There is a substantially unmet need to develop new interventions that are efficacious, effective, and have low side effect burden. LIMITATIONS Additional compounds are currently being developed that may ultimately be applicable to the treatment of bipolar depression and early open-trial data encourage further studies, but both of these topics are beyond the scope of this review. CONCLUSION Future registrational trials will need to establish initial efficacy, but increasing interest for personalized or individualized medicine will encourage further studies on individual predictors or biomarkers of response.
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Affiliation(s)
- Mark A Frye
- Mayo Clinic Depression Center, Department of Psychiatry & Psychology, Mayo Clinic College of Medicine, Rochester, MN, USA.
| | - Miguel L Prieto
- Universidad de los Andes, Facultad de Medicina, Departamento de Psiquiatría, Santiago, Chile
| | - William V Bobo
- Mayo Clinic Depression Center, Department of Psychiatry & Psychology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Simon Kung
- Mayo Clinic Depression Center, Department of Psychiatry & Psychology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Marin Veldic
- Mayo Clinic Depression Center, Department of Psychiatry & Psychology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Renato D Alarcon
- Mayo Clinic Depression Center, Department of Psychiatry & Psychology, Mayo Clinic College of Medicine, Rochester, MN, USA; Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Katherine M Moore
- Mayo Clinic Depression Center, Department of Psychiatry & Psychology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Doo-Sup Choi
- Mayo Clinic Depression Center, Department of Psychiatry & Psychology, Mayo Clinic College of Medicine, Rochester, MN, USA; Department of Molecular Pharmacology & Experimental Therapeutics, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Joanna M Biernacka
- Mayo Clinic Depression Center, Department of Psychiatry & Psychology, Mayo Clinic College of Medicine, Rochester, MN, USA; Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Susannah J Tye
- Mayo Clinic Depression Center, Department of Psychiatry & Psychology, Mayo Clinic College of Medicine, Rochester, MN, USA
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Niciu MJ, Luckenbaugh DA, Ionescu DF, Richards EM, Vande Voort JL, Ballard ED, Brutsche NE, Furey ML, Zarate CA. Riluzole likely lacks antidepressant efficacy in ketamine non-responders. J Psychiatr Res 2014; 58:197-9. [PMID: 25139008 PMCID: PMC4300112 DOI: 10.1016/j.jpsychires.2014.07.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 06/30/2014] [Accepted: 07/24/2014] [Indexed: 01/25/2023]
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