keyword
MENU ▼
Read by QxMD icon Read
search

ketamin

keyword
https://www.readbyqxmd.com/read/29165767/influence-of-laryngeal-mask-airway-lma-insertion-anesthesia-on-cognitive-function-after-microsurgery-in-pediatric-neurosurgery
#1
C-H Fan, B Peng, F-C Zhang
OBJECTIVE: To compare the influence of laryngeal mask airway (LMA) insertion anesthesia and endotracheal intubation on cognitive function during anesthesia for neurosurgery microscopy. PATIENTS AND METHODS: A total of 76 pediatric patients who underwent neurosurgery microscopy were selected. They were randomly divided in the LMA insertion group with 35 cases and the endotracheal intubation group with 41 cases. Before the operation, the two groups were injected with 0...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29165006/effect-of-non-steroidal-anti-inflammatory-drugs-on-postoperative-respiratory-and-heart-rate-in-cats-subjected-to-ovariohysterectomy
#2
Odd V Höglund, Barbara Dyall, Victoria Gräsman, Anna Edner, Ulf Olsson, Katja Höglund
Objectives The use of physiological parameters such as respiratory rate and heart rate to assess pain has long been discussed. The aim of the study was to compare postoperative respiratory rate and heart rate in cats subjected to flank ovariohysterectomy treated with a preoperative non-steroidal anti-inflammatory drug (NSAID) or no NSAID, and determine whether these parameters are suitable for postoperative pain assessment in cats. We hypothesised that cats without an NSAID would experience more postoperative pain, which may increase heart rate and respiratory rate...
November 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/29163764/inhibition-of-autoimmune-th17-cell-responses-by-pain-killer-ketamine
#3
Jeong-Eun Lee, Jung-Man Lee, Young-Jun Park, Byung-Seok Kim, Young-Tae Jeon, Yeonseok Chung
Ketamine is widely used in animals and humans as a systemic anesthetic. Although several immune-modulatory functions of ketamine have been reported, the effects of ketamine on the differentiation of Th17 cell are unknown. We found that ketamine significantly diminished the frequency of IL-17-producers among CD4(+) T cells stimulated under Th17-skewing conditions. Mechanistic studies showed that ketamine had little effect on the production of Th17-inducing cytokines by dendritic cells and the proliferation of T cells in response to anti-CD3; however it significantly hampered IL-21 expression as well as STAT3 phosphorylation in T cells upon IL-6 stimulation...
October 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/29162814/trkb-dependent-adult-hippocampal-progenitor-differentiation-mediates-sustained-ketamine-antidepressant-response
#4
Zhenzhong Ma, Tong Zang, Shari G Birnbaum, Zilai Wang, Jane E Johnson, Chun-Li Zhang, Luis F Parada
Adult neurogenesis persists in the rodent dentate gyrus and is stimulated by chronic treatment with conventional antidepressants through BDNF/TrkB signaling. Ketamine in low doses produces both rapid and sustained antidepressant effects in patients. Previous studies have shed light on post-transcriptional synaptic NMDAR mediated mechanisms underlying the acute effect, but how ketamine acts at the cellular level to sustain this anti-depressive function for prolonged periods remains unclear. Here we report that ketamine accelerates differentiation of doublecortin-positive adult hippocampal neural progenitors into functionally mature neurons...
November 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/29162522/loss-of-consciousness-is-related-to-hyper-correlated-gamma-band-activity-in-anesthetized-macaques-and-sleeping-humans
#5
Michał Bola, Adam B Barrett, Andrea Pigorini, Lino Nobili, Anil K Seth, Artur Marchewka
Loss of consciousness can result from a wide range of causes, including natural sleep and pharmacologically induced anesthesia. Important insights might thus come from identifying neuronal mechanisms of loss and re-emergence of consciousness independent of a specific manipulation. Therefore, to seek neuronal signatures of loss of consciousness common to sleep and anesthesia we analyzed spontaneous electrophysiological activity recorded in two experiments. First, electrocorticography (ECoG) acquired from 4 macaque monkeys anesthetized with different anesthetic agents (ketamine, medetomidine, propofol) and, second, stereo-electroencephalography (sEEG) from 10 epilepsy patients in different wake-sleep stages (wakefulness, NREM, REM)...
November 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/29162429/studies-with-psychedelic-drugs-in-human-volunteers
#6
REVIEW
Edward M Sellers, Myroslava K Romach, Deborah B Leiderman
Scientific curiosity and fascination have played a key role in human research with psychedelics along with the hope that perceptual alterations and heightened insight could benefit well-being and play a role in the treatment of various neuropsychiatric disorders. These motivations need to be tempered by a realistic assessment of the hurdles to be cleared for therapeutic use. Development of a psychedelic drug for treatment of a serious psychiatric disorder presents substantial although not insurmountable challenges...
November 18, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29161812/acute-amino-acid-d-serine-administration-similar-to-ketamine-produces-antidepressant-like-effects-through-the-identical-mechanisms
#7
I-Hua Wei, Kuang-Ti Chen, Mang-Hung Tsai, Ching-Hsiang Wu, Hsien-Yuan Lane, Chih-Chia Huang
D-serine is an amino acid and can work as an agonist at the glycine sites of N-methyl-D-aspartate receptor (NMDAR). Interestingly, both types of glutamatergic modulators, NMDAR enhancers and blockers, can improve depression through common targets, namely alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionaic acid receptors (AMPARs) and mammalian target of rapamycin (mTOR). To elucidate the cellular signaling pathway underlying this counterintuitive observation, we activated NMDARs in rats by using D-serine. Saline, ketamine (NMDAR antagonist), and desipramine (tricyclic antidepressant) were used as controls...
November 22, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29158584/ketamine-enhances-structural-plasticity-in-mouse-mesencephalic-and-human-ipsc-derived-dopaminergic-neurons-via-ampar-driven-bdnf-and-mtor-signaling
#8
L Cavalleri, E Merlo Pich, M J Millan, C Chiamulera, T Kunath, P F Spano, G Collo
Among neurobiological mechanisms underlying antidepressant properties of ketamine, structural remodeling of prefrontal and hippocampal neurons has been proposed as critical. The suggested mechanism involves downstream activation of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors, which trigger mammalian target of rapamycin (mTOR)-dependent structural plasticity via brain-derived neurotrophic factor (BDNF) and protein neo-synthesis. We evaluated whether ketamine elicits similar molecular events in dopaminergic (DA) neurons, known to be affected in mood disorders, using a novel, translational strategy that involved mouse mesencephalic and human induced pluripotent stem cells-derived DA neurons...
November 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/29158578/ketamine-and-its-metabolite-2r-6r-hydroxynorketamine-induce-lasting-alterations-in-glutamatergic-synaptic-plasticity-in-the-mesolimbic-circuit
#9
N Yao, O Skiteva, X Zhang, P Svenningsson, K Chergui
Low doses of ketamine trigger rapid and lasting antidepressant effects after one injection in treatment-resistant patients with major depressive disorder. Modulation of AMPA receptors (AMPARs) in the hippocampus and prefrontal cortex is suggested to mediate the antidepressant action of ketamine and of one of its metabolites (2R,6R)-hydroxynorketamine ((2R,6R)-HNK). We have examined whether ketamine and (2R,6R)-HNK affect glutamatergic transmission and plasticity in the mesolimbic system, brain regions known to have key roles in reward-motivated behaviors, mood and hedonic drive...
November 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/29158577/vgf-function-in-depression-and-antidepressant-efficacy
#10
C Jiang, W-J Lin, M Sadahiro, B Labonté, C Menard, M L Pfau, C A Tamminga, G Turecki, E J Nestler, S J Russo, S R Salton
Brain-derived neurotrophic factor (BDNF) is a critical effector of depression-like behaviors and antidepressant responses. Here, we show that VGF (non-acronymic), which is robustly regulated by BDNF/TrkB signaling, is downregulated in hippocampus (male/female) and upregulated in nucleus accumbens (NAc) (male) in depressed human subjects and in mice subjected to chronic social defeat stress (CSDS). Adeno-associated virus (AAV)-Cre-mediated Vgf ablation in floxed VGF mice, in dorsal hippocampus (dHc) or NAc, led to pro-depressant or antidepressant behaviors, respectively, while dHc- or NAc-AAV-VGF overexpression induced opposite outcomes...
November 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/29157775/ketamine-what-is-old-is-new-again
#11
Julie Golembiewski
No abstract text is available yet for this article.
December 2017: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
https://www.readbyqxmd.com/read/29155993/lack-of-antidepressant-effects-of-2r-6r-hydroxynorketamine-in-a-rat-learned-helplessness-model-comparison-with-r-ketamine
#12
Yukihiko Shirayama, Kenji Hashimoto
Background: (R)-Ketamine exhibits rapid and sustained antidepressant effects in animal models of depression. It is stereoselectively metabolized to (R)-norketamine, and subsequently to (2R,6R)-hydroxynorketamine (HNK) in the liver. The metabolism of ketamine to HNK was recently demonstrated to be essential for ketamine's antidepressant actions. However, no study has compared the antidepressant effects of these three compounds in animal models of depression. Methods: The effects of a single intraperitoneal injection of (R)-ketamine, (R)-norketamine, and (2R,6R)-HNK in a rat learned helplessness (LH) model were examined...
November 15, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29155989/5-hydroxytryptamine-independent-antidepressant-actions-of-r-ketamine-in-a-chronic-social-defeat-stress-model
#13
Kai Zhang, Chao Dong, Yuko Fujita, Atsuhiro Fujita, Kenji Hashimoto
Background: Previous reports suggest that 5-hydroxytryptamine (5-HT) might play a role in the antidepressant actions of (R,S)-ketamine. However, its role in the antidepressant actions of (R)-ketamine, which is more potent than (S)-ketamine, is unknown. This study was conducted to examine whether 5-HT depletion affects the antidepressant actions of (R)-ketamine in a chronic social defeat stress (CSDS) model. Methods: An inhibitor of 5-HT synthesis, para-chlorophenylalanine methyl ester hydrochloride (PCPA; 300 mg/kg, twice daily for 3 consecutive days), or vehicle was administered to control and CSDS susceptible mice...
November 16, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29152464/intensivist-based-deep-sedation-using-propofol-for-pediatric-outpatient-flexible-bronchoscopy
#14
Kamal Abulebda, Samer Abu-Sultaneh, Sheikh Sohail Ahmed, Elizabeth A S Moser, Renee C McKinney, Riad Lutfi
AIM: To evaluate the safety and efficacy of sedating pediatric patients for outpatient flexible bronchoscopy. METHODS: A retrospective chart review was conducted for all children, age 17 years or under who underwent flexible bronchoscopy under deep sedation in an outpatient hospital-based setting. Two sedation regimens were used; propofol only or ketamine prior to propofol. Patients were divided into three age groups; infants (less than 12 mo), toddlers (1-3 years) and children (4-17 years)...
November 4, 2017: World Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/29151192/impact-of-oral-ketamine-augmentation-on-hospital-admissions-in-treatment-resistant-depression-and-ptsd-a-retrospective-study
#15
John Hartberg, Simone Garrett-Walcott, Angelo De Gioannis
RATIONALE: Depressive episodes are the leading cause of mental health-related hospital admissions in Australia, and 44% of those admitted have a previous history of hospitalisations for depression (Admitted patient mental health-related care: (Australian Institute of Health and Welfare Aust Hospital Stat 2011-12, 2013). Despite numerous available antidepressant treatments, many patients do not respond to conventional therapy, having what is called 'treatment resistance' (Fava Biol Psychiatry 53:649-659, 2003)...
November 18, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/29150633/ketamine-s-antidepressant-effect-is-mediated-by-energy-metabolism-and-antioxidant-defense-system
#16
Katja Weckmann, Michael J Deery, Julie A Howard, Renata Feret, John M Asara, Frederik Dethloff, Michaela D Filiou, Jamie Iannace, Christiana Labermaier, Giuseppina Maccarrone, Christian Webhofer, Larysa Teplytska, Kathryn Lilley, Marianne B Müller, Christoph W Turck
Fewer than 50% of all patients with major depressive disorder (MDD) treated with currently available antidepressants (ADs) show full remission. Moreover, about one third of the patients suffering from MDD does not respond to conventional ADs and develop treatment-resistant depression (TRD). Ketamine, a non-competitive, voltage-dependent N-Methyl-D-aspartate receptor (NMDAR) antagonist, has been shown to have a rapid antidepressant effect, especially in patients suffering from TRD. Hippocampi of ketamine-treated mice were analysed by metabolome and proteome profiling to delineate ketamine treatment-affected molecular pathways and biosignatures...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150087/dexmedetomidine-methadone-ketamine-versus-dexmedetomidine-methadone-alfaxalone-for-cats-undergoing-ovariectomy
#17
Rocio Fernandez-Parra, Chiara Adami, Thomas Dresco, Thomas M Donnelly, Luca Zilberstein
OBJECTIVE: To compare the duration, quality of anaesthesia and analgesia, and quality of recovery of dexmedetomidine and methadone combined with either ketamine or alfaxalone. STUDY DESIGN: Randomized, prospective clinical trial. ANIMALS: A group of 44 healthy client-owned cats presenting for ovariectomy. METHODS: Cats were randomly assigned to one of the two treatment groups: DAM (n=22), which was administered intramuscularly (IM) dexmedetomidine (15 μg kg(-1)), methadone (0...
May 27, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/29149755/a-randomized-clinical-trial-of-adjunctive-ketamine-anesthesia-in-electro-convulsive-therapy-for-depression
#18
Minling Zhang, Robert Rosenheck, Xiaoming Lin, Qirong Li, Yanling Zhou, Yunshan Xiao, Xiong Huang, Ni Fan, Hongbo He
BACKGROUND: Electroconvulsive therapy (ECT) is a rapid acting and effective treatment for both major depressive disorder (MDD) and bipolar disorder (BP). Both propofol and ketamine are commonly used anesthetic agents but recent clinical studies suggest that ketamine has rapid-acting antidepressant properties, itself, at sub-anesthetic doses. METHODS: A total of 77 inpatients (41 MDD and 36 BP) were randomly assigned to receive ECT with propofol (1mg/kg) anesthesia or with ketamine (0...
November 10, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29149685/simultaneous-drug-identification-in-urine-of-sexual-assault-victims-by-using-liquid-chromatography-tandem-mass-spectrometry
#19
Hei Hwa Lee, Suen Chi Chen, Jong Feng Lee, Hsin Yu Lin, Bai Hsiun Chen
According to domestic and international epidemiological investigation, the proportion of substance involved sexual assault has the trend of ascent. In the past, laboratory methods that investigated urine sample of the sexual assault victims was to screen with enzyme immunoassay and then confirmed with mass spectrometry. The objective of the study is to simultaneously identify abused drugs in 126 decoded urine samples of sexual assault victims by liquid chromatography tandem mass spectrometry. The instrument was operated in multiple-reaction monitoring with an electro-spray positive ionization mode...
November 11, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29148158/long-term-anesthetic-protocol-in-rats-feasibility-in-electrophysiology-studies-in-visual-prosthesis
#20
Alejandro Barriga-Rivera, Veronica Tatarinoff, Nigel H Lovell, John W Morley, Gregg J Suaning
Electrical stimulation of excitable cells provides therapeutic benefits for a variety of medical conditions, including restoration of partial vision to those blinded via some types of retinal degeneration. To improve visual percepts elicited by the current technology, researchers are conducting acute electrophysiology experiments, mainly in cats. However, the rat can provide a model of a range of retinal diseases and possesses a sufficiently large eye to be used in this field. This article presents a long-term anesthetic protocol to enable electrophysiology experiments to further the development of visual prostheses...
November 17, 2017: Veterinary Ophthalmology
keyword
keyword
34226
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"