Nature Communications
May 12, 2022
Radhika Rawat, Elif Tunc-Ozcan, Tammy L. Mcguire et al.
69 citations
Ketamine treatment decreases depressive symptoms within hours, but the mechanisms mediating these rapid antidepressant effects are unclear. Here, we demonstrate that activity of adult-born immature granule neurons (ABINs) in the mouse hippocampal dentate gyrus is both necessary and sufficient for the rapid antidepressant effects of ketamine. Ketamine treatment activates ABINs in parallel with...
JAMA Psychiatry
May 11, 2022
Sina Nikayin, Taeho Greg Rhee, Maria Elena Cunningham et al.
43 citations
This comparative analysis examines the trajectory of depression severity among patients treated with intravenous ketamine or intranasal esketamine in a clinical setting.
EClinicalMedicine
May 7, 2022
Hewa Artin, Sean Bentley, Eamonn Mehaffey et al.
35 citations
Summary: Background: (S)-ketamine is a glutamatergic drug with potent and rapid acting effects for the treatment of depression. Little is known about the effectiveness of intranasal (S)-ketamine for treating patients with comorbid depression and post-traumatic stress disorder (PTSD). Methods: We performed a retrospective case series analysis of clinical outcomes in 35 Veterans with co-morbid...
Journal of Eating Disorders
May 6, 2022
Reid Robison, Adele Lafrance, Madeline Brendle et al.
Depression and anxiety outcome measures, safety/tolerability, patient satisfaction, and ease of implementation of group-based ketamine-assisted psychotherapy (G-KAP) delivered to patients in intensive residential eating disorder (ED) treatment were assessed. This study reports on five participants with a diagnosis of an ED and comorbid mood and anxiety disorders who received weekly...
Expert Opinion on Drug Safety
May 3, 2022
Danica Nogo, Hana Nazal, Yuetong Song et al.
17 citations
INTRODUCTION: Ketamine is an established intervention for treatment-resistant depression (TRD). However, long-term adverse effects with repeated doses remain insufficiently characterized. Although several animal models have shown N-methyl-D-aspartate glutamate receptor antagonists to produce various neuropathological reactions, attention surrounding the risk of brain lesions has been minimal....
CNS Spectrums
May 2, 2022
F. L. Rocha, U. G. Cunha, D. Duarte et al.
Abstract Depression in older adults with multiple medical comorbidities can contribute to clinical deterioration, and increased mortality. Electroconvulsive therapy (ECT) is the first-line treatment for these patients. This study aimed to evaluate the effectiveness and safety of subcutaneous (SC) ketamine as an alternative to ECT. We reviewed the medical records of all consecutive older...
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)...
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...
Expert Opinion on Drug Safety
April 27, 2022
M. Kritzer, C. Pae, P. Masand
ABSTRACT Introduction Racemic ketamine, a derivative of phencyclidine, has been used as a dissociative anesthetic since 1970. In 2000, the first randomized controlled trial showed a rapid relief of depressive symptoms. Since then, intravenous ketamine and intranasal S-ketamine have been validated for the treatment of depression and suicidal ideation following dose-response and double-blind...
Case Reports in Psychiatry
April 26, 2022
Jeremy Weleff, Kelly A. Bryant, Alexsandra Kovacevich et al.
5 citations
Background. Clinical trials have demonstrated that subanesthetic intravenous ketamine exerts antidepressant effects lasting a week or longer postinfusion, as well as antisuicidal effects starting approximately 4 hours postinfusion and lasting 72 hours or longer. These findings have generated considerable enthusiasm within psychiatry. However, reports of treatment-emergent suicide attempts and...