Ketamine as an old-new drug has a variety of clinical implications. In the last 30 years, ketamine has become popular for acute use in humans. Ketamine in standard doses is principally utilized for the induction and maintenance of surgical procedures. Besides its use in anesthesia and analgesia, recent studies have shown that ketamine has found a place in the treatment of asthma, epilepsy, depression, bipolar affective disorders, alcohol and heroin addiction. Ketamine primarily functions as a noncompetitive antagonist targeting the N-methyl-D-aspartate (NMDA) receptor, but its mechanism of action is complex. It is generally regarded as safe, with low doses and short-term use typically not leading to significant adverse effects. Also, ketamine is known as a powerful psychostimulant. During the past decade, ketamine has been one of the commonly abused drugs.
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Department of Anesthesiology, The Second Affiliated Hospital of Anhui Medical University, No. 678 Furong Road, Hefei Economic and Technological Development District, Hefei, Anhui, China.
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Method: A total of 181 patients were enrolled, with 90 in the esketamine-butorphanol group (Group BK) receiving intraoperative esketamine infusion and postoperative patient-controlled intravenous analgesia (PCIA) (esketamine 1.
Subanesthetic Ketamine Ameliorates Activity-Based Anorexia of Adult Mice.
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Center for Neural Science, New York University, New York, New York, USA.
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, 433 N Camden Dr #770, Beverly Hills, CA, 90210, USA.
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View Article and Find Full Text PDFTrends and characteristics in ketamine use among US adults with and without depression, 2015-2022.
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NYU Grossman School of Medicine, Department of Population Health, 180 Madison Avenue, New York, NY 10016, USA.
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Effects of ketamine and propofol on muscarinic plateau potentials in rat neocortical pyramidal cells.
PLoS One
January 2025
Department of Molecular Medicine, Brain Signalling Laboratory, Institute of Basic Medical Sciences, Section for Physiology, University of Oslo, Oslo, Norway.
Propofol and ketamine are widely used general anaesthetics, but have different effects on consciousness: propofol gives a deeply unconscious state, with little or no dream reports, whereas vivid dreams are often reported after ketamine anaesthesia. Ketamine is an N-methyl-D-aspartate (NMDA) receptor antagonist, while propofol is a γ-aminobutyric-acid (GABAA) receptor positive allosteric modulator, but these mechanisms do not fully explain how these drugs alter consciousness. Most previous in vitro studies of cellular mechanisms of anaesthetics have used brain slices or neurons in a nearly "comatose" state, because no "arousing" neuromodulators were added.
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