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ketamine pharmacology

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https://www.readbyqxmd.com/read/28634445/antioxidant-treatment-with-n-acetyl-cysteine-prevents-the-development-of-cognitive-and-social-behavioral-deficits-that-result-from-perinatal-ketamine-treatment
#1
Aarron Phensy, Hasmik E Duzdabanian, Samantha Brewer, Anurag Panjabi, Christopher Driskill, Annuska Berz, George Peng, Sven Kroener
Alterations of the normal redox state can be found in all stages of schizophrenia, suggesting a key role for oxidative stress in the etiology and maintenance of the disease. Pharmacological blockade of N-methyl-D-aspartic acid (NMDA) receptors can disrupt natural antioxidant defense systems and induce schizophrenia-like behaviors in animals and healthy human subjects. Perinatal administration of the NMDA receptor (NMDAR) antagonist ketamine produces persistent behavioral deficits in adult mice which mimic a range of positive, negative, and cognitive symptoms that characterize schizophrenia...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28609318/biochemical-and-pharmacological-characterization-of-a-mice-model-of-complex-regional-pain-syndrome
#2
Vaskar Das, Jeffrey S Kroin, Mario Moric, Asokumar Buvanendran
BACKGROUND AND OBJECTIVES: Complex regional pain syndrome is a challenging disease to treat. Recently, a mouse fracture model of complex regional pain syndrome has been developed that has many signs of the clinical syndrome. However, many aspects of the sensory neuron biochemistry and behavioral and pharmacological characterization of this model remain to be clarified. METHODS: Mice were randomly assigned to fracture/cast or control (naive) groups. Fracture/cast mice underwent a closed distal tibia facture, with hindlimb wrapped in casting tape for 3 weeks...
July 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28597354/pharmacologic-considerations-for-pediatric-sedation-and-anesthesia-outside-the-operating-room-a-review-for-anesthesia-and-non-anesthesia-providers
#3
REVIEW
Narjeet Khurmi, Perene Patel, Molly Kraus, Terrence Trentman
Understanding the pharmacologic options for pediatric sedation outside the operating room will allow practitioners to formulate an ideal anesthetic plan, allaying anxiety and achieving optimal immobilization while ensuring rapid and efficient recovery. The authors identified relevant medical literature by searching PubMed, MEDLINE, Embase, Scopus, Web of Science, and Google Scholar databases for English language publications covering a period from 1984 to 2017. Search terms included pediatric anesthesia, pediatric sedation, non-operating room sedation, sedation safety, and pharmacology...
June 8, 2017: Paediatric Drugs
https://www.readbyqxmd.com/read/28579941/chronic-ketamine-exposure-causes-white-matter-microstructural-abnormalities-in-adolescent-cynomolgus-monkeys
#4
Qi Li, Lin Shi, Gang Lu, Hong-Luan Yu, Fu-Ki Yeung, Nai-Kei Wong, Lin Sun, Kai Liu, David Yew, Fang Pan, De-Feng Wang, Pak C Sham
Acute and repeated exposures to ketamine mimic aspects of positive, negative, and cognitive symptoms of schizophrenia in humans. Recent studies by our group and others have shown that chronicity of ketamine use may be a key element for establishing a more valid model of cognitive symptoms of schizophrenia. However, current understanding on the long-term consequences of ketamine exposure on brain circuits has remained incomplete, particularly with regard to microstructural changes of white matter tracts that underpin the neuropathology of schizophrenia...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28562388/procedural-sedation-in-the-icu-and-emergency-department
#5
Nikhil Chawla, Adjoa Boateng, Ranjit Deshpande
PURPOSE OF REVIEW: Procedures are increasingly being performed in the acute care setting, outside of the operating rooms (OR). This article aims to review the current literature on out-of-OR procedural sedation with a focus on the ICU and emergency department, highlighting the following topics: multidisciplinary team approach, choice of pharmacologic agent, sedation scales, current safety guidelines, anticipating complications, appropriate monitoring and necessary resources. RECENT FINDINGS: Subjective assessment of sedation using sedation scales is controversial...
May 27, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28513099/syntheses-analytical-and-pharmacological-characterizations-of-the-legal-high-4-1-3-methoxyphenyl-cyclohexyl-morpholine-3-meo-pcmo-and-analogues
#6
Tristan Colestock, Jason Wallach, Matt Mansi, Nadine Filemban, Hamilton Morris, Simon P Elliott, Folker Westphal, Simon D Brandt, Adeboye Adejare
New psychoactive substances (NPS) are commonly referred to as "research chemicals", "designer drugs" or "legal highs." One NPS class is represented by dissociative anesthetics, which include analogues of the arylcyclohexylamine phencyclidine (PCP), ketamine, and diphenidine. A recent addition to the NPS market was 4-[1-(3-methoxyphenyl)cyclohexyl]morpholine (3-MeO-PCMo), a morpholine analogue of 3-MeO-PCP. Although suspected to have dissociative effects in users, information about its pharmacological profile is not available...
May 16, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28493642/adverse-events-with-ketamine-versus-ketofol-for-procedural-sedation-on-adults-a-double-blinded-randomized-controlled-trial
#7
Fabien Lemoel, Julie Contenti, Didier Giolito, Mathieu Boiffier, Jocelyn Rapp, Jacques Istria, Marc Fournier, François-Xavier Ageron, Jacques Levraut
OBJECTIVES: The goal of our study was to compare the frequency and severity of recovery reactions between ketamine and ketamine-propofol 1:1 admixture ("ketofol"). METHODS: We performed a multicentric, randomized, double-blinded trial in which adult patients received emergency procedural sedations with ketamine or ketofol. Our primary outcome was the proportion of unpleasant recovery reactions. Other outcomes were frequency of interventions required by these recovery reactions, rates of respiratory or hemodynamic events, emesis, and satisfaction of patients as well as providers...
May 11, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28490900/complex-management-of-a-patient-with-refractory-primary-erythromelalgia-lacking-a-scn9a-mutation
#8
Sarah A Low, Wendye Robbins, Vivianne L Tawfik
A 41-year-old woman presented with burning and erythema in her extremities triggered by warmth and activity, which was relieved by applying ice. Extensive workup was consistent with adult-onset primary erythromelalgia (EM). Several pharmacological treatments were tried including local anesthetics, capsaicin, ziconotide, and dantrolene, all providing 24-48 hours of relief followed by symptom flare. Interventional therapies, including peripheral and sympathetic ganglion blocks, also failed. Thus far, clonidine and ketamine have been the only effective agents for our patient...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28482015/a-new-paradigm-for-evaluating-avoidance-escape-motivation
#9
Iku Tsutsui-Kimura, Youcef Bouchekioua, Masaru Mimura, Kenji F Tanaka
Backgrounds: Organisms have evolved to approach pleasurable opportunities and to avoid or escape from aversive experiences. These two distinct motivations are referred to as approach and avoidance/escape motivations and are both considered vital for survival. Despite several recent advances in understanding the neurobiology of motivation, most studies addressed approach but not avoidance/escape motivation. Here we develop a new experimental paradigm to quantify avoidance/escape motivation and examine the pharmacological validity...
May 6, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28481700/pediatric-status-epilepticus-improved-management-with-new-drug-therapies
#10
Alberto Verrotti, Michela Ambrosi, Piero Pavone, Pasquale Striano
Status Epilepticus (SE) is the most common neurological emergency of childhood. It requires prompt administration of appropriately selected anti-seizure medications. Areas covered: Following a distinction between estabilished and emergent drugs, we present pharmacological treatment options and their clinical utility in children, with a short mention on alternatives to drug treatment. We also propose an algorithm for the management of pediatric SE. For this review a Pubmed, Medline and Embase search was performed...
June 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28460699/case-study-of-high-dose-ketamine-for-treatment-of-complex-regional-pain-syndrome-in-the-pediatric-intensive-care-unit
#11
REVIEW
Tracy Ann Pasek, Kelli Crowley, Catherine Campese, Rachel Lauer, Charles Yang
Complex regional pain syndrome (CRPS) is a life-altering and debilitating chronic pain condition. The authors are presenting a case study of a female who received high-dose ketamine for the management of her CRPS. The innovative treatment lies not only within the pharmacologic management of her pain, but also in the fact that she was the first patient to be admitted to our pediatric intensive care unit solely for pain control. The primary component of the pharmacotherapy treatment strategy plan was escalating-dose ketamine infusion via patient-controlled-analgesia approved by the pharmacy and therapeutics committee guided therapy for this patient...
June 2017: Critical Care Nursing Clinics of North America
https://www.readbyqxmd.com/read/28457485/motor-activity-markers-of-circadian-timekeeping-are-related-to-ketamine-s-rapid-antidepressant-properties
#12
Wallace C Duncan, Elizabeth Slonena, Nadia S Hejazi, Nancy Brutsche, Kevin C Yu, Lawrence Park, Elizabeth D Ballard, Carlos A Zarate
BACKGROUND: The rapid clinical antidepressant effects of the glutamatergic modulator ketamine may be due to its ability to restore synaptic plasticity and related effects on sleep-wake and circadian systems. Preclinical studies indicate that ketamine alters expression of circadian clock-associated molecules, and clinical studies of ketamine on plasticity-related biomarkers further suggest an association with sleep slow waves and sleep homeostasis. METHODS: Wrist-activity monitors were used to examine the pharmacologic and rapid antidepressant effects of ketamine on markers of circadian timekeeping (amplitude and timing) in mood disorders...
March 28, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28454981/neuropharmacological-characterization-of-the-new-psychoactive-substance-methoxetamine
#13
Laura Hondebrink, Emma E J Kasteel, Anke M Tukker, Fiona M J Wijnolts, Anouk H A Verboven, Remco H S Westerink
The use of new psychoactive substances (NPS) is steadily increasing. One commonly used NPS is methoxetamine (MXE), a ketamine analogue. Several adverse effects have been reported following MXE exposure, while only limited data are available on its neuropharmacological modes of action. We investigated the effects of MXE and ketamine on several endpoints using multiple in vitro models. These included rat primary cortical cells, human SH-SY5Y cells, human induced pluripotent stem cell (hiPSC)-derived iCell(®) Neurons, DopaNeurons and astrocyte co-cultures, and human embryonic kidney (HEK293) cells...
April 25, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28418641/classics-in-chemical-neuroscience-ketamine
#14
Marshall W Tyler, Harmony B Yourish, Dawn F Ionescu, Stephen J Haggarty
Ketamine, a molecule of many faces, has contributed immeasurably to numerous realms of clinical practice and scientific inquiry. From anesthesia and analgesia to depression and schizophrenia, it continues to shed light on the molecular underpinnings of pain, consciousness, and the pathophysiology of neuropsychiatric disorders. In particular, research on ketamine's mechanism of action is providing new hope in the search for therapies for treatment-resistant depression and affords insights into disorders of glutamatergic dysfunction...
June 21, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28408985/new-drugs-in-psychiatry-focus-on-new-pharmacological-targets
#15
REVIEW
Filippo Caraci, Gian Marco Leggio, Salvatore Salomone, Filippo Drago
The approval of psychotropic drugs with novel mechanisms of action has been rare in recent years. To address this issue, further analysis of the pathophysiology of neuropsychiatric disorders is essential for identifying new pharmacological targets for psychotropic medications. In this report, we detail drug candidates being examined as treatments for psychiatric disorders. Particular emphasis is placed on agents with novel mechanisms of action that are being tested as therapies for depression, schizophrenia, or Alzheimer's disease...
2017: F1000Research
https://www.readbyqxmd.com/read/28398339/animal-models-to-improve-our-understanding-and-treatment-of-suicidal-behavior
#16
REVIEW
T D Gould, P Georgiou, L A Brenner, L Brundin, A Can, P Courtet, Z R Donaldson, Y Dwivedi, S Guillaume, I I Gottesman, S Kanekar, C A Lowry, P F Renshaw, D Rujescu, E G Smith, G Turecki, P Zanos, C A Zarate, P A Zunszain, T T Postolache
Worldwide, suicide is a leading cause of death. Although a sizable proportion of deaths by suicide may be preventable, it is well documented that despite major governmental and international investments in research, education and clinical practice suicide rates have not diminished and are even increasing among several at-risk populations. Although nonhuman animals do not engage in suicidal behavior amenable to translational studies, we argue that animal model systems are necessary to investigate candidate endophenotypes of suicidal behavior and the neurobiology underlying these endophenotypes...
April 11, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28384832/obsessive-compulsive-disorder-advances-in-diagnosis-and-treatment
#17
REVIEW
Matthew E Hirschtritt, Michael H Bloch, Carol A Mathews
Importance: Obsessive-compulsive disorder (OCD) is a neuropsychiatric disorder associated with significant impairment and a lifetime prevalence of 1% to 3%; however, it is often missed in primary care settings and frequently undertreated. Objective: To review the most current data regarding screening, diagnosis, and treatment options for OCD. Evidence Review: We searched PubMed, EMBASE, and PsycINFO to identify randomized controlled trials (RCTs), meta-analyses, and systematic reviews that addressed screening and diagnostic and treatment approaches for OCD among adults (≥18 years), published between January 1, 2011, and September 30, 2016...
April 4, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28372596/a-proof-of-concept-investigation-into-ketamine-as-a-pharmacological-treatment-for-alcohol-dependence-study-protocol-for-a-randomised-controlled-trial
#18
Amy McAndrew, Will Lawn, Tobias Stevens, Lilla Porffy, Brigitta Brandner, Celia J A Morgan
BACKGROUND: Worldwide, alcohol abuse is a burgeoning problem. Abstinence is key to allow recovery of physical and mental health as well as quality of life, but treatment for alcohol dependence is associated with high relapse rates. Preliminary data have suggested that a combined repeated ketamine and psychological therapy programme may be effective in reducing relapse in severe alcohol use disorder. This non-commercial proof-of-concept trial is aimed at making a preliminary assessment of the effectiveness of this combined treatment in this patient group...
April 4, 2017: Trials
https://www.readbyqxmd.com/read/28365208/postoperative-hyperalgesia-a-clinically-applicable-narrative-review
#19
REVIEW
Avi A Weinbroum
Postoperative hyperalgesia (POH) is a condition characterized by signs and symptoms of pain despite the provision of conventional analgesia. In most cases, anesthesiologists are called upon soon after surgery, but occasionally it may occur as a late event. Persistent uncontrolled pain may transform into chronic or neuropathic pain. Correct diagnosis of POH is essential since similar phenomenon may exacerbate if misdiagnosed, while proper treatment is frequently achievable by pharmacological remedies. This review will describe the causes for POH and its bio-neuro-pharmacological basis, and clinical symptoms and signs directing the physician towards correct diagnosis of this paradoxical condition of pain, as well as modes capable of preventing POH from occurring...
June 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28340572/does-sevoflurane-add-to-outpatient-procedural-sedation-in-children-a-randomised-clinical-trial
#20
Hugo Sérgio de Oliveira Gomes, Heloisa de Sousa Gomes, Joji Sado-Filho, Luciane Rezende Costa, Paulo Sucasas Costa
BACKGROUND: There is little evidence concerning the effect of sevoflurane in outpatient procedural sedation, especially in children. We hypothesised that the addition of sevoflurane to a sedation regimen improves children's behaviour with minimal adverse events. METHODS: This is a randomised, triple-blind clinical trial conducted on an outpatient basis. Participants were 27 healthy children aged 4 to 6 years, who previously refused dental treatment with non-pharmacologic methods...
March 24, 2017: BMC Pediatrics
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