Targeting Unmet Needs in the Treatment of Major Depressive Disorder
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The Promise of Ketamine for Treatment-Resistant Depression: Current Evidence and Future Directions
Ann. N.Y. Acad. Sci. ISSN 0077-8923 ANNALS OF THE NEW YORK ACADEMY OF SCIENCES Issue: Qatar Clinical Neuroscience Conference The promise of ketamine for treatment-resistant depression: current evidence and future directions Kaitlin E. DeWilde,1 Cara F. Levitch,1 James W. Murrough,1 Sanjay J. Mathew,2 and Dan V. Iosifescu1 1Mood and Anxiety Disorders Program, Icahn School of Medicine at Mount Sinai, New York, New York. 2Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas Address for correspondence: Dan V. Iosifescu, M.D., Mood and Anxiety Disorders Program, Icahn School of Medicine at Mount Sinai,1 Gustave L. Levy Place, Box 1230, New York, NY 10029. [email protected] 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. -
Changes in Glutamate Levels Measured by Glutamate
Changes in glutamate levels measured by glutamate voltammetry in the rat medial prefrontal cortex after treatment with N-methyl-D-aspartate receptor antagonists (P.1.g.023) Irina Ionescu, Kelly Allers, Roberto Arban, Cornelia Dorner-Ciossek and Lothar Kussmaul Boehringer Ingelheim, CNS Diseases Research Background Hypothesized antidepressant MoA of NMDA-R antagonists: Disinhibition of glutamatergic neurons in the PFC N-methyl-D-aspartate receptor (NMDA-R) have been described as potential novel treatment options in the therapy of treatment-reistant depression (TRD). A single sub-anesthetic dose of the noncompetitive NMDA-R antagonist GABA ketamine has been shown to exert rapid-onset and long-lasting antidepressant Glutamate Glutamate NMDA-R effects in TRD patients; these effects were accompanied by brief psychotic Increased glutamate release episodes. Fast-onset antidepressant effects without psychotic side effects have also been described in the clinic for the NR2B-selective negative allosteric modulator (NAM) traxoprodil. However, other unspecific NMDA-R blockers, Synaptic plasticity such as lanicemine, failed to show fast-onset long-lasting antidepressant NMDA-R antagonists (ketamine, traxoprodil) effects in the clinic after single application. Here, we used glutamate AMPA-R AMPA-R voltammetry in rats in order to identify a preclinical predictor of clinical efficacy The increase in glutamate release as proof of circuit by circuit engagement in the prefrontal cortex (PFC). engagement and antidepressant activity can be measured by glutamate voltammetry. Using glutamate voltammetry to show circuit engagement by clinically active NMDA-R antagonists in the PFC Glutamate biosensor (Pinnacle Technology Inc., USA) Advantages of glutamate voltammetry Experimental design - fast response time Experiments were performed in Wistar Han rats implanted with Recording site: PFC - fast sampling time (1 Hz) guide cannulae at the specified coordinates. -
Ketamine: a Novel Antidepressant with a Fast Onset of Action?† COMMENTARY ON… COCHRANE CORNER Katharine Smith & Mary Jane Attenburrow
BJPsych Advances (2016), vol. 22, 216–221 doi: 10.1192/apt.22.4.216 ROUND THE CORNER Ketamine: a novel antidepressant with a fast onset of action?† COMMENTARY ON… COCHRANE CORNER Katharine Smith & Mary Jane Attenburrow Katharine Smith is an honorary For bipolar depression, the treatment challenge SUMMARY consultant psychiatrist at the is even greater. There is scarce evidence that National Institute for Health Glutamate receptor modulators, including antidepressants are effective as a first-line Research (NIHR) Oxford cognitive ketamine, are possible candidates for new health Clinical Research Facility treatment (Sidor 2012), and mood instability is an antidepressants with a novel mode of action. and Oxford University Department additional challenge. Current recommendations The pair of reviews discussed in this month’s of Psychiatry. Mary Jane (Kendall 2014) focus on the use of quetiapine; Attenburrow is Clinical Lead at Round the Corner considered their use in treating the NIHR Oxford cognitive health unipolar major depression and bipolar depression. lamotrigine, fluoxetine plus olanzapine and Clinical Research Facility, a Senior Promising results were seen for ketamine, but lithium are also recommended. A recent trial Research Fellow at Oxford University further studies are needed, in particular to (CEQUEL) demonst ra ted that there may be benefit Department of Psychiatry and an investigate whether the benefits are sustained in the combination of lamotrigine with quetiapine honorary consultant psychiatrist. Correspondence Dr Katharine or can be extended by repeated or adjunctive (Geddes 2016). Smith, NIHR Oxford cognitive health treatment, whether ketamine is effective in Although the differences in treatment response Clinical Research Facility, Warneford treatment resistance, whether other modes of between unipolar and bipolar depression Hospital, Oxford OX3 7JX, UK. -
Schifano, F., Napoletano, F., Chiappini, S., Orsolini, L., Guirguis, A., Corkery, J
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by University of Hertfordshire Research Archive Citation for the published version: Schifano, F., Napoletano, F., Chiappini, S., Orsolini, L., Guirguis, A., Corkery, J. M., ... vento, A. (2019). New psychoactive substances (NPS), psychedelic experiences, and dissociation: clinical and clinical pharmacological issues. Current Addiction Reports, 6(2), 140-152. https://doi.org/10.1007/s40429-019-00249-z Document Version: Accepted Version The final publication is available at Springer Nature via https://doi.org/10.1007/s40429-019-00249-z © 2019 Springer Nature Publishing AG General rights Copyright© and Moral Rights for the publications made accessible on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (http://uhra.herts.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge. Take down policy If you believe that this document breaches copyright please contact us providing details, any such items will be temporarily removed from the repository pending investigation. -
NMDA) Receptor Antagonist
White Paper The Use of Robust Biomarkers in the Early Clinical Development of N-methyl-D-aspartate (NMDA) Receptor Antagonist Biotrial has extensive early clinical development experience with a high output of over 20 CNS studies per year. The experience and capabilities of Biotrial Neuroscience (now also incorporating the know-how of the legacy CNS CRO Forenap), enables the in-depth cognitive and neurophysiological assessment of NMDA antagonists. The aim of the present document is twofold. Firstly, to characterize the pharmacological effects of non-competitive NMDA antagonists in psychiatry and pain indications and to validate the use of ketamine as a positive control in the development of these compounds with this mechanism of action. Secondly, to present Biotrial’s strategy and rationale for the integration of surrogate endpoints, biomarkers and PD models into a Phase I program, in order to establish early proof of concept of new NMDA antagonist candidates. Pharmacological Effects of Non-Competitive NMDA Antagonists: The Example of Ketamine Glutamatergic antagonists, such as ketamine, acting at the NMDA open channel have a long history of use in neuropsychiatry – independently of their anesthetic or pain attenuating properties. The mechanism of action and pharmacological effects of ketamine have been extensively studied over the last 20 years. Ketamine was initially profiled as a reversible model of psychosis1, producing positive and negative symptoms of schizophrenia as well as cognitive impairment. As of today there are approximately one hundred publications on the symptoms, brain connectivity, imaging and cognitive function alterations induced by ketamine. The main hypothesis to explain the effect of ketamine was the reduction of the glutamatergic burst in the prefrontal cortex, secondarily enhancing AMPA α-(amino- 3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor) signaling. -
CER 235: Pharmacologic and Nonpharmacologic Treatments For
Comparative Effectiveness Review Number 235 R Pharmacologic and Nonpharmacologic Treatments for Posttraumatic Stress Disorder: An Update of the PTSD-Repository Evidence Base Comparative Effectiveness Review Number 235 Pharmacologic and Nonpharmacologic Treatments for Posttraumatic Stress Disorder: An Update of the PTSD-Repository Evidence Base Prepared for: Agency for Healthcare Research and Quality U.S. Department of Health and Human Services 5600 Fishers Lane Rockville, MD 20857 www.ahrq.gov Contract No. 290-2015-00009-I Prepared by: Pacific Northwest Evidence-based Practice Center Portland, OR Investigators: Maya E. O’Neil, Ph.D., M.C.R. Tamara P. Cheney, M.D. Frances C. Hsu, M.S. Kathleen F. Carlson, Ph.D., M.S. Erica L. Hart, M.S.T. Rebecca S. Holmes, M.D., M.S. Katrina M. Murphy, B.S. Elaine Graham, M.L.S. David C. Cameron, M.P.H. Julie Kahler, Ph.D. Meaghan Lewis, Ph.D. Josh Kaplan, Ph.D. Marian S. McDonagh, Pharm.D. AHRQ Publication No. 20(21)-EHC029 November 2020 This report is based on research conducted by the Pacific Northwest Evidence-based Practice Center (EPC) under contract to the Agency for Healthcare Research and Quality (AHRQ), Rockville, MD (Contract No. 290-2015-00009-I). The findings and conclusions in this document are those of the authors, who are responsible for its contents; the findings and conclusions do not necessarily represent the views of AHRQ. Therefore, no statement in this report should be construed as an official position of AHRQ or of the U.S. Department of Health and Human Services. None of the investigators have any affiliations or financial involvement that conflicts with the material presented in this report. -
Correspondence
Psychological Medicine (2016), 46, 2449–2451. © Cambridge University Press 2016 Correspondence Psychological Medicine, 46 (2016). Hashimoto, 2014;Yanget al. 2015). Furthermore, a sin- doi:10.1017/S0033291716000969 gle dose of esketamine, but not R-ketamine, resulted in First published online 10 June 2016 loss of parvalbumin (PV)-immunoreactivity in the pre- frontal cortex (Yang et al. 2015). A recent study using R-ketamine: a rapid-onset and sustained [11C]raclopride and positron emission tomography antidepressant without risk of brain toxicity showed a marked reduction of dopamine D2/3 receptor binding in the conscious monkey striatum after single infusion of esketamine, but not R-ketamine (Hashimoto et al. 2016). Singh et al. (2015) reported I read with great interest the recent article by Kishimoto that psychotomimetic side effects were the highest at et al. (2016) about meta-analysis of the antidepressant 40 min after single infusion of esketamine although a effects of the N-methyl-D-aspartate receptor (NMDA-R) rapid-onset antidepressant effect was shown in antagonist ketamine (racemate) and non-ketamine treatment-resistant patients with MDD. Considering NMDA-R antagonists (traxoprodil, lanicemine, rapasti- the role of dopamine release in psychosis, it is likely nel) in patients with major depressive disorder (MDD) that marked release of dopamine from presynaptic and bipolar disorder. The authors examined the time terminals in the striatum could be associated with trajectory of efficacy of ketamine and non-ketamine psychotomimetic side effects in humans after a single NMDA-R antagonists. The greater reduction in depres- infusion of ketamine or esketamine. sive symptoms by ketamine infusion started as early The authors also pointed out that the transient as within 40–60 min, peaking on day 1, and lasting efficacy lasting 1 week post-infusion of ketamine has sti- until days 5–8, with maintenance of superior remission mulated multi-infusion studies (Kishimoto et al. -
'Party Drug' Turned Antidepressant Approaches Approval
NEWS & ANALYSIS Nature Reviews Drug Discovery | Published online 30 Oct 2018; doi:10.1038/nrd.2018.187 ‘Party drug’ turned anti depressant approaches approval Johnson & Johnson has submitted its esketamine for regulatory approval, but researchers still don’t understand how the fast-acting antidepressant lifts moods. DrAfter123/DigitalVision Vectors Sara Reardon Monteggia, a neuroscientist at Vanderbilt later learned that the antibiotic, at low doses, University. blocks the NMDA receptor, a glutamate When researchers showed in 2006 that the Yet it is far from clear how this work will receptor. Then in the late 1990s,Nature when Reviews | Drug Discovery anaesthetic ketamine — also known as the play out. Whereas early evidence suggested psychiatrist John Krystal of Yale University club drug Special K — was a rapid and potent that ketamine acted through the NMDA was curious about whether the antidepressant, big pharmaceutical receptor, many of the first-generation neurotransmitter glutamate contributed to companies quickly jumped into the game. ketamine mimetics that were designed to act schizophrenia, he decided to test the known Extensive efforts to improve on decades-old on this target failed in clinical trials (TABLE 1). NMDA receptor antagonist ketamine in nine antidepressants had floundered, but ketamine Accumulating evidence now suggests that depressed patients. finally promised a novel mechanism of action ketamine’s antidepressant activity may be At the time, glutamate had mostly been and the potential to help treatment-resistant more complicated. studied for its role in learning and memory. But patients. As a result, some companies are quietly Krystal’s group found that ketamine induced a Because ketamine is an old drug and going back to the drawing board. -
Evidence That Subanesthetic Doses of Ketamine Cause Sustained Disruptions of NMDA and AMPA-Mediated Frontoparietal Connectivity in Humans
11694 • The Journal of Neuroscience, August 19, 2015 • 35(33):11694–11706 Behavioral/Cognitive Evidence that Subanesthetic Doses of Ketamine Cause Sustained Disruptions of NMDA and AMPA-Mediated Frontoparietal Connectivity in Humans Suresh D. Muthukumaraswamy,1 XAlexander D. Shaw,2 XLaura E. Jackson,3 Judith Hall,3 Rosalyn Moran,4 and Neeraj Saxena3,5 1Schools of Pharmacy and Psychology, The University of Auckland, Auckland 1142, New Zealand, 2Cardiff University Brain Research Imaging Centre, Cardiff University, Cardiff CF103AT, United Kingdom, 3Department of Anaesthetics, Intensive Care and Pain Medicine, Cwm Taf University Health Board, Llantrisant CF72 8XR, United Kingdom, 4Virginia Tech Carilion Research Institute, Bradley Department of Electrical and Computer Engineering, Roanoke, Virginia 24016, and 5Department of Anaesthetics, Intensive Care and Pain Medicine, School of Medicine, Cardiff University, Cardiff CF144XW, United Kingdom Following the discovery of the antidepressant properties of ketamine, there has been a recent resurgence in the interest in this NMDA receptor antagonist. Although detailed animal models of the molecular mechanisms underlying ketamine’s effects have emerged, there are few MEG/EEG studies examining the acute subanesthetic effects of ketamine infusion in man. We recorded 275 channel MEG in two experiments (n ϭ 25 human males) examining the effects of subanesthetic ketamine infusion. MEG power spectra revealed a rich set of significant oscillatory changes compared with placebo sessions, including decreases in occipital, parietal, and anterior cingulate alpha power, increases in medial frontal theta power, and increases in parietal and cingulate cortex high gamma power. Each of these spectral effectsdemonstratedtheirownsetoftemporaldynamics.Dynamiccausalmodelingoffrontoparietalconnectivitychangeswithketamine indicated a decrease in NMDA and AMPA-mediated frontal-to-parietal connectivity. -
Potential Drug Candidates to Treat TRPC6 Channel Deficiencies in The
cells Review Potential Drug Candidates to Treat TRPC6 Channel Deficiencies in the Pathophysiology of Alzheimer’s Disease and Brain Ischemia Veronika Prikhodko 1,2,3, Daria Chernyuk 1 , Yurii Sysoev 1,2,3,4, Nikita Zernov 1, Sergey Okovityi 2,3 and Elena Popugaeva 1,* 1 Laboratory of Molecular Neurodegeneration, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia; [email protected] (V.P.); [email protected] (D.C.); [email protected] (Y.S.); [email protected] (N.Z.) 2 Department of Pharmacology and Clinical Pharmacology, Saint Petersburg State Chemical Pharmaceutical University, 197022 St. Petersburg, Russia; [email protected] 3 N.P. Bechtereva Institute of the Human Brain of the Russian Academy of Sciences, 197376 St. Petersburg, Russia 4 Institute of Translational Biomedicine, Saint Petersburg State University, 199034 St. Petersburg, Russia * Correspondence: [email protected] Received: 31 August 2020; Accepted: 20 October 2020; Published: 24 October 2020 Abstract: Alzheimer’s disease and cerebral ischemia are among the many causative neurodegenerative diseases that lead to disabilities in the middle-aged and elderly population. There are no effective disease-preventing therapies for these pathologies. Recent in vitro and in vivo studies have revealed the TRPC6 channel to be a promising molecular target for the development of neuroprotective agents. TRPC6 channel is a non-selective cation plasma membrane channel that is permeable to Ca2+. Its Ca2+-dependent pharmacological effect is associated with the stabilization and protection of excitatory synapses. Downregulation as well as upregulation of TRPC6 channel functions have been observed in Alzheimer’s disease and brain ischemia models. -
Brain Networks in Pharmacological Fmri of NMDA Antagonists
Aus dem Zentralinstitut für Seelische Gesundheit (Direktor: Prof. Dr. Andreas Meyer-Lindenberg) Brain networks in pharmacological fMRI of NMDA antagonists Inauguraldissertation zur Erlangung des Doctor scientiarum humanarum (Dr.sc.hum.) der Medizinischen Fakultät Mannheim der Ruprecht-Karls-Universität zu Heidelberg vorgelegt von Diplom-Physiker Robert Becker aus Wiesbaden 2019 Dekan: Prof. Dr. med. Sergij Goerdt Referent: apl. Prof. Dr. med. Dipl. Phys. Alexander Sartorius Contents 1 Introduction 1 1.1 Aims . 3 2 Network methods in neuroscience 5 2.1 Network definition . 5 2.2 Network analysis . 7 2.3 Studies . 13 3 Study: Species-conserved reconfigurations of brain networks in- duced by Ketamine 15 3.1 Abstract . 15 3.2 Introduction . 16 3.3 Methods . 17 3.4 Results . 23 3.5 Discussion . 26 3.6 Conclusions . 30 3.7 Supplementary Information . 30 4 Study: NMDA receptor antagonists traxoprodil and lanicemine improve hippocampal-prefrontal coupling and reward related net- works in rats 35 4.1 Abstract . 35 4.2 Introduction . 36 4.3 Methods . 37 4.4 Results . 41 4.5 Discussion . 47 4.6 Conclusion . 51 4.7 Supplementary material . 51 5 Discussion 55 5.1 Establishment of network methods in preclinical studies . 55 5.2 Effects of NMDA antagonists on rat brain networks . 56 5.3 Limitations . 58 5.4 Future work . 58 5.5 Conclusion . 60 Summary 61 Bibliography 63 Curriculum Vitae 77 Acknowledgements 81 1 Introduction In the last two decades blood oxygenation level dependent (BOLD) functional magnetic resonance imaging (fMRI) has become a widely used tool in neuro- scientific research. After the relation of neuronal activity and BOLD signal was discovered, fMRI was used to detect neuronal responses to various tasks compared to control periods during which the brain was considered inactive (Biswal, Zerrin Yetkin, Haughton, & Hyde, 1995). -
Application and Assessment of Deep Learning for the Generation Of
Application and Assessment of Deep Learning for the Generation of Potential NMDA Receptor Antagonists Katherine J. Schultz, Sean M. Colby, Yasemin Yesiltepe, Jamie R. Nuñez, Monee Y. McGrady, Ryan R. Renslow* Pacific Northwest National Laboratory, Richland, WA, USA. ABSTRACT. Uncompetitive antagonists of the N-methyl D-aspartate receptor (NMDAR) have demonstrated therapeutic benefit in the treatment of neurological diseases such as Parkinson’s and Alzheimer’s, but some also cause dissociative effects that have led to the synthesis of illicit drugs. The ability to generate NMDAR antagonists in silico is therefore desirable both for new medication development and for preempting and identifying new designer drugs. Recently, generative deep learning models have been applied to de novo drug design as a means to expand the amount of chemical space that can be explored for potential drug-like compounds. In this study, we assess the application of a generative model to the NMDAR to achieve two primary objectives: (i) the creation and release of a comprehensive library of experimentally validated NMDAR phencyclidine (PCP) site antagonists to assist the drug discovery community and (ii) an analysis of both the advantages conferred by applying such generative artificial intelligence models to drug design and the current limitations of the approach. We apply, and provide source code for, a variety of ligand- and structure-based assessment techniques used in standard drug discovery analyses to the deep learning-generated compounds. We present twelve candidate antagonists that are not 1 available in existing chemical databases to provide an example of what this type of workflow can achieve, though synthesis and experimental validation of these compounds is still required.