Ketamine, an N-methyl-D-aspartate (NMDA) receptor antagonist, is widely used for analgesia and anesthesia in obstetric and pediatric practice. Recent reports indicate that ketamine causes neuronal cell death in developing rodents and nonhuman primates. The present study assessed the potential dose- and time-dependent neurotoxic effects and associated changes in gene expression after ketamine ad...

PURPOSE Ketamine is commonly used in pediatric anesthesia but may cause neurodegeneration in young brains. The aim of the study is to use an animal model to characterize the role of microRNA 137 (miR-137) in ketamine-induced neurodegeneration in neonatal hippocampus. METHODS Young Sprague-Dawley Rats (1 month old) was systemically administrated with ketamine (75 mg/kg) for 3 days. TUNEL assay...

BACKGROUND There is poor experimental evidence concerning the effects of anesthetic doses of the noncompetitive N-methyl-D-aspartate receptor antagonist ketamine on rodents' memory abilities. The current study was designed (1) to investigate the consequences of posttraining administration of anesthetic ketamine (100 mg/kg intraperitoneally) on rats' recognition memory and (2) to evaluate the ab...

UNLABELLED We designed this double-blinded, randomized, controlled study to evaluate the effect of small-dose ketamine IV in combination with epidural morphine and bupivacaine on postoperative pain after renal surgery. An epidural catheter was inserted, and the administration of morphine and bupivacaine was started before surgery. Forty patients were assigned to one of two groups (ketamine or c...

introduction: suicidal ideation is an emergent problem in the emergency department (ed) that often complicates patient disposition and discharge. it has been shown that ketamine possesses fast acting antidepressant and anti-suicidal effects. this study was conducted to examine the effects of a single intravenous bolus of ketamine on patients with suicidal ideations in ed. methods: forty-nine su...

Ketamine abuse is being increasingly reported worldwide. The drug can produce a dissociative state and hallucinations, making ketamine a favorite recreational agent among drug addicts. Chronic ketamine abuse can damage many organs, including the brain, heart, liver, gastrointestinal tract, and genitourinary system. We report a patient with chronic ketamine abuse who presented with severe cachex...

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 k...

Background: From 2007 onwards reports of ketamine abuse uropathy have been reported from time to time in the medical literature but most medical practitioners and the public are not aware of the presentation, pathophysiology, investigation and management of this new entity Aims: To review the literature on ketamine-abuse uropathy. To summarise the investigation and management of the disease. Li...

Ketamine produces rapid and sustained antidepressant actions in depressed patients, but the precise cellular mechanisms underlying these effects have not been identified. Here we determined if modulation of neuronal activity in the infralimbic prefrontal cortex (IL-PFC) underlies the antidepressant and anxiolytic actions of ketamine. We found that neuronal inactivation of the IL-PFC completely ...

Pentameric ligand-gated ion channels (pLGICs) are targets of general anesthetics, but a structural understanding of anesthetic action on pLGICs remains elusive. GLIC, a prokaryotic pLGIC, can be inhibited by anesthetics, including ketamine. The ketamine concentration leading to half-maximal inhibition of GLIC (58 μM) is comparable to that on neuronal nicotinic acetylcholine receptors. A 2.99 Å ...