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ketamine infusions

Sara de la Salle, Joelle Choueiry, Dhrasti Shah, Hayley Bowers, Judy McIntosh, Vadim Ilivitsky, Verner Knott
N-methyl-D-aspartate (NMDA) receptor antagonists administered to healthy humans results in schizophrenia-like symptoms, which preclinical research suggests are due to glutamatergically altered brain oscillations. Here, we examined resting-state electroencephalographic activity in 21 healthy volunteers assessed in a placebo-controlled, double-blind, randomized study involving administration of either a saline infusion or a sub-anesthetic dose of ketamine, an NMDA receptor antagonist. Frequency-specific current source density (CSD) was assessed at sensor-level and source-level using eLORETA within regions of interest of a triple network model of schizophrenia (this model posits a dysfunctional switching between large-scale Default Mode and Central Executive networks by the monitor-controlling Salience Network)...
2016: Frontiers in Pharmacology
Minkyung Park, Laura E Newman, Philip W Gold, David A Luckenbaugh, Peixiong Yuan, Rodrigo Machado-Vieira, Carlos A Zarate
Several pro-inflammatory cytokines have been implicated in depression and in antidepressant response. This exploratory analysis assessed: 1) the extent to which baseline cytokine levels predicted positive antidepressant response to ketamine; 2) whether ketamine responders experienced acute changes in cytokine levels not observed in non-responders; and 3) whether ketamine lowered levels of pro-inflammatory cytokines, analogous to the impact of other antidepressants. Data from double-blind, placebo-controlled studies of patients with major depressive disorder (MDD) or bipolar disorder (BD) who received a single infusion of sub-anesthetic dose ketamine were used (N = 80)...
September 30, 2016: Journal of Psychiatric Research
Mohammad Reza Khajavi, Seyed Mehdi Sabouri, Reza Shariat Moharari, Pejman Pourfakhr, Atabak Najafi, Farhad Etezadi, Farsad Imani
BACKGROUND: Opioids are generally the preferred analgesic agents during the early postoperative period. OBJECTIVES: The present study was designed to assess and compare the multimodal analgesic effects of ketamine and tramadol in combination with intravenous acetaminophen after renal surgery. PATIENTS AND METHODS: This randomized, double-blinded, clinical trial was conducted on 80 consecutive patients undergoing various types of kidney surgeries in Sina hospital in Tehran in 2014 - 2016...
July 2016: Nephro-urology Monthly
Sung Kwan Choi, Myung Ha Yoon, Jung Il Choi, Woong Mo Kim, Bong Ha Heo, Keun Seok Park, Ji A Song
BACKGROUND: Although intraoperative opioids provide more comfortable anesthesia and reduce the use of postoperative analgesics, it may cause opioid induced hyperalgesia (OIH). OIH is an increased pain response to opioids and it may be associated with N-methyl-D-aspartate (NMDA) receptor. This study aimed to determine whether intraoperative nefopam or ketamine, known being related on NMDA receptor, affects postoperative pain and OIH after continuous infusion of intraoperative remifentanil...
October 2016: Korean Journal of Anesthesiology
Tony Chung Tung Lo, Stephen Tung Yeung, Sujin Lee, Kira Skavinski, Solomon Liao
OBJECTIVE: Ehlers-Danlos syndrome frequently causes acute and chronic pain because of joint subluxations and dislocations secondary to hypermobility. Current treatments for pain related to Ehlers-Danlos syndrome and central pain syndrome are inadequate. This case report discusses the therapeutic use of ketamine intravenous infusion as an alternative. CASE REPORT: A 27-year-old Caucasian female with a history of Ehlers-Danlos syndrome and spinal cord ischemic myelopathy resulting in central pain syndrome, presented with severe generalized body pain refractory to multiple pharmacological interventions...
2016: Journal of Pain Research
Kenji Hashimoto
No abstract text is available yet for this article.
October 1, 2016: American Journal of Psychiatry
Gabriel Rudd-Barnard, Agnes S Wallbom, Sanjog Pangarkar
No abstract text is available yet for this article.
September 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
D M Rotroff, D G Corum, A Motsinger-Reif, O Fiehn, N Bottrel, W C Drevets, J Singh, G Salvadore, R Kaddurah-Daouk
Ketamine, at sub-anesthetic doses, is reported to rapidly decrease depression symptoms in patients with treatment-resistant major depressive disorder (MDD). Many patients do not respond to currently available antidepressants, (for example, serotonin reuptake inhibitors), making ketamine and its enantiomer, esketamine, potentially attractive options for treatment-resistant MDD. Although mechanisms by which ketamine/esketamine may produce antidepressant effects have been hypothesized on the basis of preclinical data, the neurobiological correlates of the rapid therapeutic response observed in patients receiving treatment have not been established...
2016: Translational Psychiatry
Naomi S Kort, Judith M Ford, Brian J Roach, Handan Gunduz-Bruce, John H Krystal, Judith Jaeger, Robert M G Reinhart, Daniel H Mathalon
BACKGROUND: Recent theoretical models of schizophrenia posit that dysfunction of the neural mechanisms subserving predictive coding contributes to symptoms and cognitive deficits, and this dysfunction is further posited to result from N-methyl-D-aspartate glutamate receptor (NMDAR) hypofunction. Previously, by examining auditory cortical responses to self-generated speech sounds, we demonstrated that predictive coding during vocalization is disrupted in schizophrenia. To test the hypothesized contribution of NMDAR hypofunction to this disruption, we examined the effects of the NMDAR antagonist, ketamine, on predictive coding during vocalization in healthy volunteers and compared them with the effects of schizophrenia...
July 1, 2016: Biological Psychiatry
Rong-Jian Liu, Catharine Duman, Taro Kato, Brendan Hare, Dora Lopresto, Eunyoung Bang, Jeffery Burgdorf, Joseph Moskal, Jane Taylor, George Aghajanian, Ronald S Duman
GLYX-13 is a putative NMDA receptor modulator with glycine-site partial agonist properties that produces rapid antidepressant effects, but without the psychotomimetic side effects of ketamine. Studies were conducted to examine the molecular, cellular, and behavioral actions of GLYX-13 to further characterize the mechanisms underlying the antidepressant actions of this agent. The results demonstrate that a single dose of GLYX-13 rapidly activates the mTORC1 pathway in the prefrontal cortex (PFC), and that infusion of the selective mTORC1 inhibitor rapamycin into the medial PFC (mPFC) blocks the antidepressant behavioral actions of GLYX-13, indicating a requirement for mTORC1 similar to ketamine...
September 16, 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
Ubedullah Kaka, Bullo Saifullah, Adamu Abdul Abubakar, Yong Meng Goh, Sharida Fakurazi, Asmatullah Kaka, Atique Ahmed Behan, Mahdi Ebrahimi, Hui Cheng Chen
BACKGROUND: Central sensitization is a potential severe consequence of invasive surgical procedures. It results in postoperative and potentially chronic pain enhancement. It results in postoperative pain enhancement; clinically manifested as hyperalgesia and allodynia. N-methyl-D-aspartate (NMDA) receptor plays a crucial role in the mechanism of central sensitisation. Ketamine is most commonly used NMDA-antagonist in human and veterinary practice. However, the antinociceptive serum concentration of ketamine is not yet properly established in dogs...
September 9, 2016: BMC Veterinary Research
Daiki Yamanaka, Takashi Kawano, Hiroki Tateiwa, Hideki Iwata, Fabricio M Locatelli, Masataka Yokoyama
BACKGROUND: Anti-N-methyl-d-aspartate receptor (NMDA-R) encephalitis is a recently identified but increasingly recognized autoimmune paraneoplastic disease. Because these patients present complex neuropsychiatric symptoms due to NMDA-R dysfunction, the optimal methods of sedation/anesthesia remain controversial. Here, we present animal experiment data, along with a related case report, implying the safe and effective use of dexmedetomidine in patients with anti-NMDA-R encephalitis. FINDINGS: (1) Animal experiment: in order to investigate whether dexmedetomidine may interfere with NMDA-R activity, an NMDA antagonist (MK-801) model in rats was used to simulate anti-NMDA-R encephalitis...
2016: SpringerPlus
Meng Li, Liliana Ramona Demenescu, Lejla Colic, Coraline Metzger, Hans-Jochen Heinze, Johann Steiner, Oliver Speck, Anna Fejtova, Giacomo Salvadore, Martin Walter
The anterior cingulate cortex (ACC) has shown decreased glutamate levels in patients with major depressive disorder (MDD). Subanesthetic doses of ketamine were repeatedly shown to improve depressive symptoms within 24 h after infusion and this antidepressant effect was attributed to increased AMPA throughput. To elucidate ketamine's mechanism of action, we tested if the clinical time course of the improvement is mirrored by the change of glutamine/glutamate ratio and if such effects show a regional and temporal specificity in two distinct subdivisions of ACC with different AMPA/NMDA receptor profiles...
September 8, 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
Chadi G Abdallah, Lynnette A Averill, Katherine A Collins, Paul Geha, Jaclyn Schwartz, Christopher Averill, Kaitlin E DeWilde, Edmund Wong, Alan Anticevic, Cheuk Y Tang, Dan V Iosifescu, Dennis S Charney, James W Murrough
Capitalizing on recent advances in resting-state functional connectivity magnetic resonance imaging (rs-fcMRI) and the distinctive paradigm of rapid mood normalization following ketamine treatment, the current study investigated intrinsic brain networks in major depressive disorder (MDD) during a depressive episode and following treatment with ketamine. Medication-free patients with MDD and healthy control subjects (HC) completed baseline rs-fcMRI. MDD patients received a single infusion of ketamine and underwent repeated rs-fcMRI at 24 h posttreatment...
October 12, 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
Gloria S Cheng, Brian M Ilfeld
OBJECTIVE: To review the published evidence regarding perioperative analgesic techniques for breast cancer-related surgery. DESIGN: Topical review. METHODS: Randomized, controlled trials (RCTs) were selected for inclusion in the review. Also included were large prospective series providing estimates of potential risks and technical reports and small case series demonstrating a new technique or approaches of interest to clinicians. RESULTS: A total of 514 abstracts were reviewed, with 284 studies meeting criteria for full review...
August 22, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
Renata P Lerner, Zisis Bimpisidis, Stergiani Agorastos, Sandra Scherrer, Stephen L Dewey, M Angela Cenci, David Eidelberg
Dissociation of vasomotor and metabolic responses to levodopa has been observed in human subjects with Parkinson's disease (PD) studied with PET and in autoradiograms from 6-hydroxydopamine (6-OHDA) rat. In both species, acute levodopa administration was associated with increases in basal ganglia cerebral blood flow (CBF) with concurrent reductions in cerebral metabolic rate (CMR) for glucose in the same brain regions. In this study, we used a novel dual-tracer microPET technique to measure CBF and CMR levodopa responses in the same animal...
August 17, 2016: Neurobiology of Disease
Ashley K Losing, Justin M Jones, Adis Keric, Steven E Briggs, David D Leedahl
Ketamine is a promising alternative agent for pain control that offers benefit to traditional strategies, particularly in the setting of rib fracture. Current pharmacologic therapies have clear adverse effects, and other options may be invasive, cost prohibitive, or marginally effective. We describe three consecutive patients with traumatic injuries including rib fracture for which a ketamine infusion was utilized as part of their pain control strategy.  For each patient, use of a ketamine infusion trended toward reduced opioid requirements with stable pain scores...
July 2016: Bulletin of Emergency and Trauma
Joanne Wong, Adam Sutherland
AIM: Ketamine is used for post-operative analgesia. There has been recent disruption in it's supply. It is usually prescribed by patient's weight (3 mg/kg in 50 ml 0.9% saline) at a rate of 1-5 ml/hr (1-5 microgram/kg/minute). To conserve ketamine supplies our policy was changed to a concentrated "standardised" concentration of ketamine (250 mg in 50 ml 0.9% sodium chloride) that could be run for a maximum of 72 hrs. There is evidence demonstrating no relationship between duration of infusion and microbiological contamination for 72 hrs...
September 2016: Archives of Disease in Childhood
Kaundinya Gopinath, Eric Maltbie, Naoko Urushino, Doty Kempf, Leonard Howell
RATIONALE: There is a significant interest in the NMDA-receptor antagonist ketamine due to its efficacy in treating depressive disorders and its induction of psychotic-like symptoms that make it a useful tool for modeling psychosis. Pharmacological MRI in awake nonhuman primates provides a highly translational model for studying the brain network dynamics involved in producing these drug effects. OBJECTIVE: The present study evaluated ketamine-induced changes in functional connectivity (FC) in awake rhesus monkeys...
October 2016: Psychopharmacology
Vincent Bonhomme, Audrey Vanhaudenhuyse, Athena Demertzi, Marie-Aurélie Bruno, Oceane Jaquet, Mohamed Ali Bahri, Alain Plenevaux, Melanie Boly, Pierre Boveroux, Andrea Soddu, Jean François Brichant, Pierre Maquet, Steven Laureys
BACKGROUND: Consciousness-altering anesthetic agents disturb connectivity between brain regions composing the resting-state consciousness networks (RSNs). The default mode network (DMn), executive control network, salience network (SALn), auditory network, sensorimotor network (SMn), and visual network sustain mentation. Ketamine modifies consciousness differently from other agents, producing psychedelic dreaming and no apparent interaction with the environment. The authors used functional magnetic resonance imaging to explore ketamine-induced changes in RSNs connectivity...
November 2016: Anesthesiology
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