Journal of Psychiatric Research
May 1, 2022
Yazen Alnefeesi, David C J Chen-Li, Ella Krane et al.
177 citations
Ketamine is a promising therapeutic option in treatment-resistant depression (TRD). The acute efficacy of ketamine in TRD has been demonstrated in replicated randomised-controlled trials (RCTs), but the generalizability of RCT data to real-world practice is limited. To this end, we conducted a systematic review (Search date: 25/12/2021; 1482 records identified) and meta-analysis of studies...
Journal of Psychiatric Research
May 1, 2022
Tuyen T. Le, Isabel Pazos Cordero, Muhammad Youshay Jawad et al.
82 citations
While ketamine has been used clinically over the past decades, it has only been recently shown to be a promising therapy for treatment-resistant depression (TRD). However, ketamine and related dissociative agents may also be misused recreationally, creating significant concerns for abuse liability when prescribed for depression. Although the abuse potential of ketamine is widely recognized,...
JMIR Research Protocols
May 1, 2022
Gilmar Gutierrez, Joshua D. Rosenblat, Emily R. Hawken et al.
Background Intravenous (IV) ketamine and intranasal (IN) esketamine have been studied as novel alternatives to manage treatment-resistant depression (TRD). The objective of this observational pilot study is to compare the real-world effectiveness and tolerability of IV ketamine and IN esketamine in the management of unipolar TRD. Objective To compare the effectiveness (primary outcome measure)...
Psychiatry Research
April 25, 2022
Hartej Gill, Parnian Puramat, Pankti Patel et al.
16 citations
The use of psilocybin as treatment for major depressive disorder (MDD) has been examined as a promising alternative to traditional first-line options. We reviewed existing literature to provide a synthesis of the extant neuroimaging observations with psilocybin, and to identify putative therapeutic targets for target engagement studies with psilocybin, and potentially other psychedelics. We...
Expert Opinion on Drug Safety
April 15, 2022
Marcus A. Doyle, Susan Ling, Leanna M.W. Lui et al.
24 citations
INTRODUCTION: Hallucinogen persisting perception disorder (HPPD) affects a subset of persons who use hallucinogens and is defined as the repeated experience of hallucinations and other perceptual disturbances as a result of prior intoxications. As select hallucinogens are under development for the treatment of selectmental disorders, there is a need to better characterize this disorder. AREAS...
Expert Opinion on Drug Safety
April 6, 2022
Muhammad Youshay Jawad, Joshua D. Di Vincenzo, Felicia Ceban et al.
29 citations
INTRODUCTION: Intranasal (IN) esketamine represents an innovative treatment for individuals with treatment resistant depression and depression with suicidal ideation and behavior. Herein, we synthesize extant long-term studies (≥ 4 weeks) regarding this treatment. RESEARCH DESIGN AND METHODS: The interventional studies of IN esketamine in patients with depression having a study period of at...
Psychiatry Research
2022
Joshua D. Di Vincenzo, Orly Lipsitz, Nelson B Rodrigues et al.
11 citations
Antidepressants are associated with symptomatic worsening in a subgroup of patients. Replicated evidence has demonstrated rapid and robust antidepressant effects with intravenous (IV) ketamine in treatment resistant depression (TRD); however, the risk of ketamine worsening depressive symptoms in a subgroup of patients remains unknown. Herein we report a retrospective analysis on the rates of...
CNS Drugs
November 17, 2021
Susan Ling, Felicia Ceban, Leanna M.W. Lui et al.
123 citations
Therapeutic deficiencies with monoaminergic antidepressants invites the need to identify and develop novel rapid-acting antidepressants. Hitherto, ketamine and esketamine are identified as safe, well-tolerated rapid-acting antidepressants in adults with treatment-resistant depression, and also mitigate measures of suicidality. Psilocybin is a naturally occurring psychoactive alkaloid and...
Psychiatry Research
October 1, 2021
Tuyen T. Le, Joshua D. Di Vincenzo, Kayla M Teopiz et al.
26 citations
Approximately 0.35-1% of the general population is afflicted with psychotic depression at some time in their life. Psychotic depression is a subtype of major depressive disorder characterized by mood congruent hallucinations and/or delusions. Patients with psychotic depression often represent the most severe cases, with high relapse and mortality rate. Although treatment guidelines recommend a...
Journal of Psychiatric Research
July 1, 2021
Ashley N. Siegel, Shakila Meshkat, Katie Benitah et al.
101 citations
Psychedelics are a hallucinogenic class of psychoactive drugs with the primary effect of activating non-ordinary states of consciousness. Due to the positive preliminary findings of these drugs in the treatment of psychiatric disorders, the number of registered clinical studies has risen significantly. In this paper, clinical studies registered on clinicaltrials.gov that evaluate the treatment...
Journal of Sleep Research
June 16, 2021
Nelson B Rodrigues, Roger S McIntyre, Orly Lipsitz et al.
28 citations
Summary Sleep disturbances are commonly reported in patients with treatment‐resistant depression (TRD). Available data have shown that intravenous (IV) ketamine is an effective treatment for patients with TRD and growing data suggest ketamine may improve overall sleep architecture. In the present study, we evaluated whether changes in sleep symptoms mediated the anti‐depressive and/or...
Advances in Therapy
April 30, 2021
Eric P. Mcmullen, Yena Lee, Orly Lipsitz et al.
Ketamine treatment is capable of significant and rapid symptom improvement in adults with treatment-resistant depression (TRD). A limitation of ketamine treatment in TRD is the relatively short duration of time to relapse (e.g., median 2–4 weeks). The objective of the systematic review herein is to identify strategies capable of prolonging the acute efficacy of ketamine in adults with TRD....
American Journal of Psychiatry
March 17, 2021
Roger S McIntyre, Joshua D. Rosenblat, Charles B. Nemeroff et al.
694 citations
Replicated international studies have underscored the human and societal costs associated with major depressive disorder. Despite the proven efficacy of monoamine-based antidepressants in major depression, the majority of treated individuals fail to achieve full syndromal and functional recovery with the index and subsequent pharmacological treatments. Ketamine and esketamine represent...
Journal of Psychiatric Research
March 1, 2021
Joshua D. Di Vincenzo, Ashley N. Siegel, Orly Lipsitz et al.
59 citations
The majority of antidepressant medication trials have focused on adult populations (ages 18-65), with much less research in older and younger populations. Moreover, key differences in the efficacy and safety of antidepressants have been identified between these age groups. Ketamine has emerged as a promising new treatment for treatment resistant depression (TRD). The objective of this review is...
Journal of Affective Disorders
March 1, 2021
Roger S McIntyre, Nelson B Rodrigues, Orly Lipsitz et al.
10 citations
BACKGROUND Depression severity and efficacy measurement scales employed for rapid-acting treatments (e.g., ketamine) were initially validated in adults receiving conventional monoamine-based antidepressants. The emergence of rapid-acting antidepressants in psychiatry provides the impetus for outcome measures that have been validated as sensitive to change with rapid-acting treatments. Herein,...
Expert Opinion on Emerging Drugs
January 2, 2021
Amna Majeed, Jiaqi Xiong, Kayla M Teopiz et al.
48 citations
INTRODUCTION: The large percentage of adults with major depressive disorder (MDD) insufficiently responding and/or tolerating conventional monoamine-based antidepressants invites the need for mechanistically novel treatments. Convergent evidence implicates glutamatergic signaling as a potential therapeutic target in MDD. AREAS COVERED: The synthesis herein of preclinical and clinical studies...
Journal of Affective Disorders
December 29, 2020
Nelson B Rodrigues, Roger S McIntyre, Orly Lipsitz et al.
BACKGROUND Dissociation is a treatment-emergent adverse event commonly associated with IV ketamine, often measured using the 23-item Clinician-Administered Dissociative States Scale (CADSS). The objective of this study was to develop a short form version of the CADSS for easier clinical use. METHODS Retrospective data of 260 patients with treatment-resistant depression (TRD) receiving IV...
Journal of Psychiatric Research
December 11, 2020
Jiaqi Xiong, Orly Lipsitz, David C J Chen-Li et al.
122 citations
The efficacy of ketamine in reducing suicidal ideation (SI) has been previously reported. We aimed to evaluate acute anti-SI effects of single-dose ketamine in different formulations/routes of administration by pooling results from randomized controlled trials (RCTs). A systematic search was conducted on Cochrane, Embase, Medline, and PubMed from inception to July 1st, 2020. Studies were...
CNS Spectrums
December 10, 2020
Nelson B Rodrigues, Ashley N. Siegel, Orly Lipsitz et al.
17 citations
BACKGROUND: Patients unsuccessfully treated by neurostimulation may represent a highly intractable subgroup of depression. While the efficacy of intravenous (IV) ketamine has been established in patients with treatment-resistant depression (TRD), there is an interest to evaluate its effectiveness in a subpopulation with a history of neurostimulation. METHODS: This retrospective, posthoc...
CNS Spectrums
December 3, 2020
Orly Lipsitz, Roger S McIntyre, Nelson B Rodrigues et al.
25 citations
BACKGROUND: Higher body mass index (BMI) has been found to predict greater antidepressant response to intravenous (IV) ketamine treatment. We evaluated the association between BMI and response to repeat-dose IV ketamine in patients with treatment-resistant depression (TRD). METHODS: Adults (N = 230) with TRD received four infusions of IV ketamine at a community-based clinic. Changes in symptoms...
Neuroscience & Biobehavioral Reviews
November 23, 2020
Hartej Gill, Barjot Gill, Nelson B Rodrigues et al.
92 citations
Replicated evidence has documented cognitive deficits in populations with treatment-resistant depression (TRD). Approximately 40% of patients with MDD present with impairment of one or more cognitive domains. As such, there is an unmet need to discover treatments that have pro-cognitive effects in TRD patients. Ketamine has demonstrated efficacy as a rapid-onset intervention for the treatment...
Journal of Affective Disorders
November 1, 2020
Roger S McIntyre, Isabelle P. Carvalho, Leanna M.W. Lui et al.
186 citations
BACKGROUND Ketamine is established as a rapid and effective treatment in adults with treatment-resistant depression (TRD). The availability of different formulations and routes of delivery invites the need for evaluating relative effect sizes. METHODS Effect size with respect to depression symptom reduction for each formulation and route of delivery was compared at discrete time-points (i.e.,...
Journal of Psychopharmacology
October 11, 2020
Roger S McIntyre, Nelson B Rodrigues, Orly Lipsitz et al.
19 citations
Background: Individuals meeting criteria for treatment-resistant depression (TRD) are differentially affected by high levels of anxiety symptoms. Aims: There is a need to identify the efficacy of novel rapid-onset treatments in adults with mood disorders and comorbid anxious-distress. Methods: This study included patients with treatment-resistant major depressive disorder (MDD) or bipolar...
Expert Review of Neurotherapeutics
September 21, 2020
Hartej Gill, Barjot Gill, David C J Chen-Li et al.
62 citations
Psychedelics, such as psilocybin and MDMA, offer an alternative avenue of therapy for many mental health disorders. Available evidence indicates that psychedelics may offer a single-dose, rapid effect model that have robust effects with treatment-resistant mental disorders and a unique advantage as a possible monotherapy for mental illness. Novel clinical trials that evaluate the safety,...
Expert Opinion on Drug Safety
June 15, 2020
Nelson B Rodrigues, Roger S McIntyre, Orly Lipsitz et al.
50 citations
ABSTRACT Objectives Rigorous clinical trials suggest ketamine is safe and well-tolerated in patients with treatment-resistant depression (TRD). There is a paucity of data on the safety and tolerability of ketamine in community-based clinics treating patients with TRD. Methods Retrospective data was analyzed from 203 patients with TRD who received repeat-dose IV ketamine. Safety was...