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Ketamine and depression

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https://www.readbyqxmd.com/read/29778972/hypnotic-agents-for-induction-of-general-anesthesia-in-cesarean-section-patients-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#1
Kavita Houthoff Khemlani, Stephanie Weibel, Peter Kranke, Jan-Uwe Schreiber
STUDY OBJECTIVE: An ideal induction drug for cesarean section (CS) must have quick action, with minimum side effects such as awareness, hemodynamic compromise, and neonatal depression. Thiopentone is frequently used; however, no reliable evidence is available to support its use as a dedicated hypnotic agent in this setting. DESIGN: A systematic review and meta-analysis, using PRISMA methodology, of randomized controlled trials (RCTs), comparing women undergoing CS using thiopentone with those undergoing CS with propofol, ketamine, or benzodiazepines as hypnotic agents...
May 17, 2018: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/29763645/agmatine-potentiates-neuroprotective-effects-of-subthreshold-concentrations-of-ketamine-via-mtor-s6-kinase-signaling-pathway
#2
Mauren K Tavares, Suellen Dos Reis, Nicolle Platt, Isabella A Heinrich, Ingrid A V Wolin, Rodrigo B Leal, Manuella P Kaster, Ana Lúcia S Rodrigues, Andiara E Freitas
Dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis is one of the most robust neurobiological findings in the pathophysiology of major depressive disorder (MDD) over the last 40 years. The persistent increase in glucocorticoids levels induces morphological and anatomical changes in the brain, especially in the hippocampus. Ketamine represents a major advance for the treatment of MDD, however the psychotomimetic effects of this compound limit its widespread use. Agmatine is a neuromodulator that has been shown to be a putative novel and well-tolerated antidepressant/augmenter drug...
May 12, 2018: Neurochemistry International
https://www.readbyqxmd.com/read/29757924/placebo-versus-low-dose-ketamine-infusion-in-addition-to-remifentanil-target-controlled-infusion-for-conscious-sedation-during-oocyte-retrieval-a-prospective-double-blinded-randomised-controlled-trial
#3
Hélène I Morue, Shalini Raj-Lawrence, Sarah Saxena, Anne Delbaere, Edgard Engelman, Luc A Barvais
BACKGROUND: Currently, there is no gold standard for monitored anaesthesia care during oocyte retrieval. OBJECTIVE: In our institution, the standard is a conscious sedation technique using a target-controlled infusion (TCI) of remifentanil, titrated to maintain a visual analogue pain score less than 30 mm. This protocol is well accepted by patients but is associated with frequent episodes of respiratory depression. The main objective of this study was to evaluate whether the addition of a continuous intravenous infusion of ketamine could reduce these episodes...
April 30, 2018: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/29755030/detrimental-effect-of-hypericum-perforatum-on-ovarian-functions
#4
Buket Demirci, Fadime Kahyaoğlu, Tolga Atakul, Mustafa Yılmaz, Yavuz Özoran
OBJECTIVE: Hypericum perforatum (HP) is widely used for depression and distress treatment as an over-the-counter plant in any age. This study investigated the safety of HP on ovarian functions and infertility. MATERIAL AND METHODS: HP given to the rats in two different doses (100 and 300 mg/kg/day) with drinking water for four weeks. Half of the treatment groups have been sacrificed at the end of four weeks intervention, remained have been sacrificed after additional waiting period for four weeks to see reversibility if there is...
May 14, 2018: Journal of the Turkish German Gynecological Association
https://www.readbyqxmd.com/read/29753795/non-anesthetic-effects-of-ketamine-a-review-article-authors-%C3%A2-%C3%A2-%C3%A2-%C3%A2-%C3%A2-%C3%A2-%C3%A2
#5
REVIEW
Jabril Eldufani, Alireza Nekoui, Gilbert Blaise
Ketamine is considered a dissociative anesthetic medication, and it is a commonly administered by a parenteral route. It works mainly by blocking the N-methyl-D-aspartate (NMDA) receptor. It inhibits the voltage-gated Na_ and K_ channels and serotonin and dopamine re-uptake; also, it affects specific receptors, such as α-amino-3-hydroxy-5-methyl-4- isoxazolepropionic acid (AMPA), kainate and aminobutyric acid A receptors. Ketamine appears to have particular mechanisms that are potentially involved during analgesic induction, including enhancing of descending inhibition and anti-inflammatory effects...
May 10, 2018: American Journal of Medicine
https://www.readbyqxmd.com/read/29750979/ketamine-facilitates-extinction-of-avoidance-behavior-and-enhances-synaptic-plasticity-in-a-rat-model-of-anxiety-vulnerability-implications-for-the-pathophysiology-and-treatment-of-anxiety-disorders
#6
Ashley M Fortress, Ian M Smith, Kevin C H Pang
Anxiety disorders and posttraumatic stress disorder (PTSD) share a common feature of pathological avoidance behavior. The Wistar Kyoto (WKY) rat has been used as a model of anxiety vulnerability, expressing a behaviorally inhibited temperament, acquiring avoidance behavior more rapidly and displaying extinction-resistant avoidance compared to Sprague Dawley (SD) rats. Subanesthetic levels of ketamine have gained attention as a rapid antidepressant in treatment-resistant depression. While traditional antidepressants are commonly used to treat anxiety disorders and PTSD, the therapeutic utility of ketamine for these disorders is much less understood...
May 8, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29748628/7t-1-h-mrs-in-major-depressive-disorder-a-ketamine-treatment-study
#7
Jennifer W Evans, Níall Lally, Li An, Ningzhi Li, Allison C Nugent, Dipavo Banerjee, Sam L Snider, Jun Shen, Jonathan P Roiser, Carlos A Zarate
The glutamatergic modulator ketamine has striking and rapid antidepressant effects in major depressive disorder (MDD), but its mechanism of action remains unknown. Proton magnetic resonance spectroscopy (1H-MRS) is the only non-invasive method able to directly measure glutamate levels in vivo; in particular, glutamate and glutamine metabolite concentrations are separable by 1H-MRS at 7T. This double-blind, placebo-controlled, crossover study that included 1 H-MRS scans at baseline and at 24 h post ketamine and post-placebo infusions sought to determine glutamate levels in the pregenual anterior cingulate (pgACC) of 20 medication-free MDD subjects and 17 healthy volunteers (HVs) 24 h post ketamine administration, and to evaluate any other measured metabolite changes, correlates, or predictors of antidepressant response...
April 5, 2018: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29745328/a-case-of-acute-intoxication-due-to-the-assumption-of-the-new-psychoactive-substance-nps-u-47700-identification-in-urine-blood-and-pubic-hair-by-liquid-chromatography-high-resolution-mass-spectrometry
#8
Donata Favretto, Vogliardi Susanna, Stocchero Giulia, Maietti Sergio, Tucci Marianna, Nalesso Alessandro, Snenghi Rossella
BACKGROUND/OBJECTIVE: We report on a case of severe intoxication after insufflation of U-47700, a synthetic opioid that acts as a selective agonist of the µ-opioid receptor, several times more potent than morphine. A man in his 30s was found irresponsive in his apartment and was brought to the emergency department of a local hospital. A comatous state and severe respiratory depression were diagnosed. Anamnesis revealed that the patient could have taken the substance named "U-47700", bought in the Internet...
May 9, 2018: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29742620/ketamine-differentially-restores-diverse-alterations-of-neuroligins-in-brain-regions-in-a-rat-model-of-neuropathic-pain-induced-depression
#9
Wei Pan, Guang-Fen Zhang, Hui-Hui Li, Mu-Huo Ji, Zhi-Qiang Zhou, Kuan-Yu Li, Jian-Jun Yang
Depression is present in a large proportion of patients suffering from chronic pain, and yet the underlying mechanisms remain to be elucidated. Neuroligins (NLs), as a family of cell-adhesion proteins, are involved in synaptic formation and have been linked to various neuropsychiatric disorders. Here, we studied the alterations in NL1 and NL2 in the medial prefrontal cortex (mPFC), the anterior cingulate cortex (ACC), and the hippocampus in a rat model of neuropathic pain-induced depression, and whether ketamine, a rapid and robust antidepressant, could restore these abnormalities...
May 8, 2018: Neuroreport
https://www.readbyqxmd.com/read/29736744/antidepressant-efficacy-and-tolerability-of-ketamine-and-esketamine-a-critical-review
#10
REVIEW
P Molero, J A Ramos-Quiroga, R Martin-Santos, E Calvo-Sánchez, L Gutiérrez-Rojas, J J Meana
Ketamine and its enantiomer S-ketamine (esketamine) are promising candidates to produce a rapid-onset antidepressant effect in treatment-resistant depression. Ketamine causes continued blockade of the glutamate N-methyl-D-aspartate (NMDA) receptor, though this might not primarily mediate the antidepressant effect. Alternative hypotheses include selectivity for the NMDA receptor subtype containing the NMDA receptor subunit 2B (NR2B), inhibition of the phosphorylation of the eukaryotic elongation factor 2 (eEF2) kinase, increased expression of brain-derived neurotrophic factor (BDNF) and tropomyosin receptor kinase B (TrKB), and activation of the mammalian target of rapamycin (mTOR) signaling pathway, alongside other independent actions attributed to the ketamine metabolism to R-hydroxynorketamine (R-HNK)...
May 7, 2018: CNS Drugs
https://www.readbyqxmd.com/read/29729289/astrocytes-activation-contributes-to-the-antidepressant-like-effect-of-ketamine-but-not-scopolamine
#11
Yun Wang, Liming Xie, Ce Gao, Lingyan Zhai, Ning Zhang, Lin Guo
Depression is a common, debilitating mood disorder, but currently available antidepressants have several major drawbacks. Both ketamine and scopolamine attract more and more attention due to their rapid and sustained antidepressant activities. However, the molecular and cellular mechanism that underlies the therapeutic action of ketamine and scopolamine still remain to be elucidated. Considering the importance of astrocytes in the development of depression, we hypothesized that the activation of astrocyte may play a vital role in the antidepressant effects of ketamine and scopolamine...
May 3, 2018: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/29727073/efficacy-safety-and-durability-of-repeated-ketamine-infusions-for-comorbid-posttraumatic-stress-disorder-and-treatment-resistant-depression
#12
C Sophia Albott, Kelvin O Lim, Miriam K Forbes, Christopher Erbes, Susanna J Tye, John G Grabowski, Paul Thuras, Tegan M Batres-Y-Carr, Joseph Wels, Paulo R Shiroma
OBJECTIVE: The present study examined the efficacy, safety, and durability of repeated ketamine infusions for the treatment of comorbid posttraumatic stress disorder (PTSD) and treatment-resistant depression (TRD) in a sample of veterans. METHODS: Individuals with comorbid DSM-5-defined PTSD and DSM-IV-defined major depressive disorder (N = 15) received 6 intravenous ketamine infusions (0.5 mg/kg) on a Monday-Wednesday-Friday schedule over a 12-day period from May 2015 to June 2016...
May 1, 2018: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/29726758/pharmacotherapy-for-the-treatment-of-depression-in-patients-with-alzheimer-s-disease-a-treatment-resistant-depressive-disorder
#13
Madia Lozupone, Maddalena La Montagna, Francesca D'Urso, Carla Piccininni, Rodolfo Sardone, Vittorio Dibello, Gianluigi Giannelli, Vincenzo Solfrizzi, Antonio Greco, Antonio Daniele, Nicola Quaranta, Davide Seripa, Antonello Bellomo, Giancarlo Logroscino, Francesco Panza
Pharmacotherapy for the treatment of depressive disorders in Alzheimer's Disease (AD) represents a clinical challenge. pharmacological options are often attempted after a period of watchful waiting (8-12 weeks). monoaminergic antidepressant drugs have shown only modest or null clinical benefits, maybe because the etiology of depressive symptoms in ad patients is fundamentally different from that of nondemented subjects. Areas covered: The following article looks at the selective serotonin reuptake inhibitor sertraline, which is one of the most frequently studied antidepressant medications in randomized controlled trials (RCTs)...
May 4, 2018: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/29722313/ketamine-enhances-structural-plasticity-in-human-dopaminergic-neurons-possible-relevance-for-treatment-resistant-depression
#14
Ginetta Collo, Emilio Merlo Pich
No abstract text is available yet for this article.
April 2018: Neural Regeneration Research
https://www.readbyqxmd.com/read/29719350/a-case-report-of-a-patient-with-treatment-resistant-depression-successfully-treated-with-repeated-intravenous-injections-of-a-low-dosage-of-ketamine
#15
Shikai Wang, Mincai Qian, Liang Li, Qi Yang
Depression is a highly prevalent and severely disabling disease. The treatment effects, intensity and onset time of antidepressants have been highlighted in many studies. Recent studies on the rapid-onset of antidepressant response focused on the effect of a single low dose of intravenous ketamine. However, there are still some problems with treatment, including safety, efficacy, ethics, dose, frequency of administration and their effect in treatment-resistant depression. In the present study, we treated one case of treatment resistant depression with repeated intravenous injections with a low dosage of ketamine...
December 25, 2017: Shanghai Archives of Psychiatry
https://www.readbyqxmd.com/read/29718262/ketamine-effects-on-eeg-during-therapy-of-treatment-resistant-generalized-anxiety-and-social-anxiety
#16
Shabah Mohammad Shadli, Tame Kawe, Daniel Martin, Neil McNaughton, Shona Neehoff, Paul Glue
Background: Ketamine is swiftly effective in a range of neurotic disorders that are resistant to conventional antidepressant and anxiolytic drugs. The neural basis for its therapeutic action is unknown. Here we report the effects of ketamine on the EEG of patients with treatment-resistant generalized anxiety and social anxiety disorders. Methods: Twelve patients with refractory DSM-IV generalized anxiety disorder and/or social anxiety disorder provided EEG during 10 minutes of relaxation before and 2 hours after receiving double-blind drug administration...
April 24, 2018: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29718013/ketamine-for-treatment-resistant-depression-a-new-advocate
#17
Rodrigo Pérez-Esparza
Current alternatives for the treatment of major depressive disorder lack efficacy and have a delayed onset of action. Recently, the glutamatergic neurotransmission system has been noted to play an important role in the pathophysiology of this disorder. Ever since the first report of the antidepressant effects of the N-methyl-D-aspartate receptor antagonist, ketamine, research has been redirected to novel therapeutic targets. With this rapidly growing evidence of a fast-acting antidepressant such as ketamine, as well as its efficacy in treatment-resistant cases of depression, off-label use has become popular in certain settings...
2018: Revista de Investigación Clínica; Organo del Hospital de Enfermedades de la Nutrición
https://www.readbyqxmd.com/read/29702122/temporally-dissociable-effects-of-ketamine-on-neuronal-discharge-and-gamma-oscillations-in-rat-thalamo-cortical-networks
#18
Maria Amat-Foraster, Anders A Jensen, Niels Plath, Kjartan F Herrik, Pau Celada, Francesc Artigas
BACKGROUND: Sub-anesthetic doses of the non-competitive N-methyl-d-aspartate receptor (NMDA-R) antagonist ketamine evoke transient psychotomimetic effects, followed by persistent antidepressant effects in treatment-resistant depressed patients and rodents through still poorly understood mechanisms. Since phencyclidine (PCP) disinhibits thalamo-cortical networks by blocking NMDA-Rs on GABAergic neurons of the reticular thalamic nucleus (RtN), we examined ketamine's actions in the same areas...
April 24, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29700801/ketamine-based-anesthesia-improves-electroconvulsive-therapy-outcomes-a-randomized-controlled-study
#19
Jonathan J Gamble, Henry Bi, Rudy Bowen, Grahme Weisgerber, Rohan Sanjanwala, Renuka Prasad, Lloyd Balbuena
BACKGROUND: Major depressive disorder (MDD) is a common and debilitating condition that can be challenging to treat. Electroconvulsive therapy (ECT) is currently the therapeutic gold standard for treatment-resistant MDD. We tested our hypothesis that ketamine-based anesthesia for ECT results in superior improvement in treatment-resistant MDD outcomes compared with propofol-based anesthesia. METHODS: Patients with treatment-resistant MDD were enrolled in a randomized clinical trial with assignment to ketamine- or propofol-based anesthesia arms...
February 21, 2018: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/29699723/delayed-increase-of-thrombocyte-levels-after-a-single-sub-anesthetic-dose-of-ketamine-a-randomized-trial
#20
Lejla Colic, Marie Woelfer, Merima Colic, Anna Linda Leutritz, Thomas Liebe, Luisa Fensky, Zumrut Duygu Sen, Meng Li, Juliane Hoffmann, Moritz A Kretzschmar, Berend Isermann, Martin Walter
Recently, ketamine has been investigated as a potential antidepressant option for treatment resistant depression. Unlike traditional drugs, it yields immediate effects, most likely via increased glutamatergic transmission and synaptic plasticity. However, ketamine administration in humans is systemic and its long-term impact on blood parameters has not yet been described in clinical studies. Here we investigated potential sustained effects of ketamine administration (0.5 mg/kg ketamine racemate) on hematological and biochemical values in plasma and serum in a randomized double-blinded study...
April 23, 2018: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
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