Author: Kenji Hashimoto
Publisher: Springer Nature
ISBN: 3030797902
Category : Medical
Languages : en
Pages : 152
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Book Description
This book discusses new candidates for rapid-acting antidepressants, such as (R)-ketamine, (2R,6R)-hydroxynorketamine, scopolamine, mGluR2/3 antagonists and AMPA receptor agonists. There are serious limitations to currently available antidepressants, such as delayed onset and low rates of efficacy. The discovery that a single dose of ketamine, an NMDAR antagonist, can produce rapid antidepressant effects that are sustained has led to new research in this area. In this volume, a variety of novel pharmaceutical treatments are examined. This volume would be useful to both researchers and clinicians who work in the field of pharmacology, specifically CNS drug treatments.
Author:
Publisher: Academic Press
ISBN: 0128201908
Category : Medical
Languages : en
Pages : 404
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Book Description
The Advances in Pharmacology series presents a variety of chapters from the best authors in the field. Includes the authority and expertise of leading contributors in pharmacology Presents the latest release in the Advances in Pharmacology series
Author: Kenji Hashimoto
Publisher: Springer Nature
ISBN: 9811529027
Category : Medical
Languages : en
Pages : 189
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Book Description
This book presents the latest data from basic research and clinical trials supporting the effectiveness of ketamine as a treatment for depression, bipolar disorder, and suicidal behavior, setting these positive findings within the context of the serious problem of ketamine abuse. The first part of the book focuses on the evidence regarding ketamine abuse, with specific reference to Asian countries, and discusses countermeasures and complication management. It then addresses the mechanisms underlying the antidepressant and side effects of ketamine, which have remained elusive, describing and discussing important new research findings. Further, it explains insights gained from whole brain imaging in rodents and from behavioral pharmacology, and presents evidence regarding the role of gut microbiota, the NMDA receptor GluN2D subunit, and the lateral habenula in the actions of ketamine. These advances form the basis for the safer use of ketamine in patients with treatment-resistant depression and are expected to lead to the development of new antidepressants.
Author: Sanjay J. Mathew
Publisher: Springer
ISBN: 3319429256
Category : Medical
Languages : en
Pages : 167
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Book Description
This book brings together an international group of clinicians and researchers from a broad swath of inter-related disciplines to offer the most up-to-date information about clinical and preclinical research into ketamine and second-generation “ketamine-like” fast-acting antidepressants. Currently available antidepressant medications act through monoaminergic systems, are ineffective for many individuals suffering from depression, and are associated with a delayed onset of peak efficacy of several months. The unexpected emergence of ketamine, an anesthetic N-methyl-D-aspartate (NMDA) receptor antagonist, as a rapid-acting antidepressant has reinvigorated CNS drug discovery research and catalyzed investigation in patient populations historically ignored in antidepressant drug development programs, particularly treatment-resistant patients and those with suicidality. Recent industry and academic research efforts have coalesced to explore NMDA receptor and glutamatergic molecular targets that lack ketamine’s psychotomimetic side effects and abuse liability but retain its rapid onset of efficacy. However, many fundamental questions remain regarding the neurobiological mechanisms underlying ketamine’s rapid antidepressant effects and the puzzling persistence of benefits observed in some patients following a single dose. This book examines how insights from these studies are forging new conceptual models of the neurobiology of stress-related affective, anxiety, and addictive disorders and the nature of treatment resistance. It also discusses how ketamine’s rapid antidepressant effects provide a scientific platform to facilitate innovation in clinical trial designs pertaining to patient selection, choice of control group, outcome measures, and dose-optimization. This book brings together data and insights from this rapidly expanding and extraordinarily promising field of study. Readers will be able to extract integrated themes and useful insights from the material contained in these diverse chapters and appreciate the paradigm-shifting contributions of ketamine to modern psychiatry and clinical neuroscience research.
Author:
Publisher:
ISBN: 9789811529030
Category : Ketamine
Languages : en
Pages : 187
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Book Description
This book presents the latest data from basic research and clinical trials supporting the effectiveness of ketamine as a treatment for depression, bipolar disorder, and suicidal behavior, setting these positive findings within the context of the serious problem of ketamine abuse. The first part of the book focuses on the evidence regarding ketamine abuse, with specific reference to Asian countries, and discusses countermeasures and complication management. It then addresses the mechanisms underlying the antidepressant and side effects of ketamine, which have remained elusive, describing and discussing important new research findings. Further, it explains insights gained from whole brain imaging in rodents and from behavioral pharmacology, and presents evidence regarding the role of gut microbiota, the NMDA receptor GluN2D subunit, and the lateral habenula in the actions of ketamine. These advances form the basis for the safer use of ketamine in patients with treatment-resistant depression and are expected to lead to the development of new antidepressants. --
Author: Gustavo H. Vazquez
Publisher: Academic Press
ISBN: 0128210346
Category : Medical
Languages : en
Pages : 170
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Book Description
Ketamine for Treatment-Resistant Depression: Neurobiology and Applications provides a simple, evidence-based overview for neuropsychiatrists and translational researchers on this medication, its mechanisms of actions, eligibility of patients for treatment, and the preparation and implementation of ketamine clinics. Provides efficacy research on ketamine as a treatment for depression Identifies best practices for clinical use, both long-term and acute Discusses the molecular mechanisms and neurobiology of action
Author: Preet Mohinder Singh Bedi
Publisher:
ISBN:
Category : Medical
Languages : en
Pages : 0
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Book Description
Ketamine is a phencyclidine derivative and N-methyl-D-aspartate receptor antagonist, widely popular as a dissociative anesthetic. Its use as an anesthetic in humans was progressively fallen out due to its associated adverse effects and the emergence of newer and safer anesthetics. In recent few decades, various reports related to its efficacy in the treatment of resistant depression with anti-suicidal potential draw significant attention from researchers around the globe. The rapid clinical effect of ketamine within hours as compared to traditional antidepressants that take several weeks makes it a hot topic in antidepressant research. Studies conducted in the recent past suggest its mechanism of action through glutamate modulation via receptors like NMDA, AMPA as well as downregulation of BDNF etc. This chapter will shed light on the various mechanisms of ketamine related to antidepressant activity. Along with that its pharmacokinetics, toxicology and ongoing clinical trials will also be discussed.
Author: Chad E. Beyer
Publisher: Cambridge University Press
ISBN: 1139833030
Category : Medical
Languages : en
Pages : 151
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Book Description
The World Health Organization defines depression as a primary contributor to the global burden of disease and predicts it will become the second leading cause of death by 2020. The need to develop effective therapies has never been so pressing. Current antidepressant drugs have several limitations. This 2010 book looks at the future of mood-disorder research, covering the identification of new therapeutic targets, establishing new preclinical models, new medicinal chemistry opportunities, and fostering greater understanding of genetic influences. These strategies are likely to help build a better picture of the disease process, and lead to new opportunities for patient stratification and treatment. The ultimate goal for this strand of research is to develop more personalized and effective treatments for this chronic and debilitating condition. This is essential reading for all those involved in psychopharmacologic drug development, and mental health clinicians seeking a preview of discoveries soon to influence their practice.
Author: Ke Zhang
Publisher:
ISBN:
Category : Antidepressants
Languages : en
Pages : 92
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Book Description
Major depressive disorder (MDD) is a serious public health problem that is prevalent in the United States and all over the world. Despite the high incidence of MDD and its socioeconomic impact, the etiology of MDD remains largely unknown. Current traditional antidepressants used in clinical treatment are far from ideal. They usually take weeks to months to produce efficiency. And high risk of suicide is another factor to limit their application. Moreover, nearly 30% of the patients with depression are resistant to traditional antidepressant treatment. Recent evidence from clinical trials shows that a single subanesthesia dose (0.5-20 mg/kg) of ketamine, a noncompetitive ionotropic glutamatergic NMDA receptor antagonist, produces rapid antidepressant responses in patients suffering from MDD. However, recent studies on the mechanism underlying ketamine's fast-acting antidepressant effect are controversial. Moreover, the psychotomimetic properties and abuse potential of ketamine necessitate caution in promoting this compound as a general treatment for depression. Understanding the underlying mechanism of action of ketamine linked to behavioral improvement is of significant importance for developing novel, safe and fast-acting antidepressants. In the current study, we provide evidence to support a new hypothesis on how NMDA receptor blockage induces fast antidepressant effect, which is quite different from the prevalent theories about fast antidepressant action of ketamine.In this study we observed that ketamine potentiates the excitatory synaptic transmission by recording fEPSP and whole-cell EPSC, which is dependent on PKA activation. More AMPA GluR1 receptors expressed on membrane surface by ketamine-enhanced phosphorylation of GluR1 at site Ser845. Additionally for the upstream signaling of ketamine-induced potentiation of synaptic transmission, we found that ketamine blocks presynaptic NMDA receptors and decrease presynaptic HCN channel expressions which leads to an increase of presynaptic glutamate release, and thus enhanced postsynaptic responses by PKA activation pathways.
Author: Graziano Pinna
Publisher:
ISBN: 9781634820769
Category :
Languages : en
Pages : 412
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Book Description
Fluoxetine, best known by the trade name Prozac®, unlike other psychotropic drugs whose effects were serendipitously stumbled upon, was the first developed for a precise mechanism of action, that is, the ability to selectively inhibit serotonin reuptake, based upon the theory that increasing the availability of serotonin would treat major depression. Once approved by the FDA in 1987, fluoxetine quickly became the most prescribed psychotropic drug worldwide and its success in improving mood disorders has triggered the development of a large number of congener molecules, commonly known as SSRIs after their purported mechanism of action. However, a quarter of a century after its development, the idea that fluoxetine asserts its positive behavioral effect through inhibition of serotonergic reuptake is not firmly established. This book reviews several preclinical and clinical reports suggesting that the pharmacological effects of fluoxetine may be mediated by means other than the regulation of serotonin, including the regulation of gene expression, modifying epigenetic mechanisms as well as modifying microRNAs. One of the most prominent mechanisms for the therapeutic relevance of fluoxetine relates to influencing neuroplasticity by enhancing neurotropic factors, including BDNF signaling and altering adult neurogenesis. The ability of fluoxetine to rapidly increase neurosteroid levels accounts for the fast anxiolytic effects of this drug. Fluoxetine action at sigma-1 receptor or modulating glutamatergic neurotransmission as well as the combination of fluoxetine with other psychotropic drugs is discussed in relation to its therapeutic effects. While fluoxetine was primarily prescribed as an antidepressant, this drug currently represents a treatment of choice for a broad spectrum of psychiatric disorders, including post-traumatic stress disorder and a range of anxiety disorders. This drug even possesses analgesic actions and is a valuable therapy for stroke. This book also highlights emerging evidence on the gender-specific effects of fluoxetine, its potential adverse features, including its addiction liability in combination with psychostimulants, and the impact of perinatal fluoxetine exposure.
