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https://www.readbyqxmd.com/read/28645783/maerua-angolensis-stem-bark-extract-reverses-anxiety-and-related-behaviours-in-zebrafish-involvement-of-gabaergic-and-5-ht-systems
#1
Charles Kwaku Benneh, Robert Peter Biney, Priscilla Kolibea Mante, Augustine Tandoh, Donatus Wewura Adongo, Eric Woode
ETHNOPHARMACOLOGICAL RELEVANCE: Maerua angolensis DC (Capparaceae) has been employed in the management of several central nervous system (CNS) disorders including anxiety. This study evaluated the anxiolytic effects of the petroleum ether/ethyl acetate fraction stem bark extract and its possible mechanism(s) using zebrafish anxiety models. METHODS: Adult zebrafish, tested in the novel tank and light dark tests, have shown by previous authors to be sensitive to the anxiolytic effects of known anxiolytic drugs...
June 20, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28644688/intraosseous-administration-of-antidotes-a-systematic-review
#2
Audrée Elliott, Pierre-André Dubé, Amélie Cossette-Côté, Laura Patakfalvi, Eric Villeneuve, Martin Morris, Sophie Gosselin
CONTEXT: Intraosseous (IO) access is an established route of administration in resuscitation situations. Patients with serious poisoning presenting to the emergency department may require urgent antidote therapy. However, intravenous (IV) access is not always readily available. OBJECTIVE: This study reviews the current evidence for IO administration of antidotes that could be used in poisoning. The primary outcome was mortality as a surrogate of efficacy. Secondary outcomes included hemodynamic variables, electrocardiographic variables, neurological status, pharmacokinetics outcomes, and adverse effects as defined by each article...
June 23, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28640109/efficacy-of-levetiracetam-versus-fosphenytoin-for-the-recurrence-of-seizures-after-status-epilepticus
#3
Kensuke Nakamura, Ryota Inokuchi, Hiroaki Daidoji, Hiromu Naraba, Tomohiro Sonoo, Hideki Hashimoto, Kurato Tokunaga, Takahiro Hiruma, Kent Doi, Naoto Morimura
Benzodiazepines are used as first-line treatments for status epilepticus. Fosphenytoin (FPHT) is recommended for second-line therapy; however, intravenous injection of levetiracetam (LEV) may also be effective against status epilepticus. Herein, we compared the efficacy and safety of LEV as a second-line treatment for status epilepticus with FPHT in Japanese patients.Patients with status epilepticus were selected from the database of the Emergency and Critical Care Center of Hitachi General Hospital. The subjects were patients whose status epilepticus was successfully stopped by diazepam, and in whom FPHT or LEV was administered after diazepam...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28638826/anxiolytics-sedatives-and-hypnotics-prescribed-by-dentists-in-brazil-in-2010
#4
Patrícia Azevedo Lino, Maria Auxiliadora Parreiras Martins, Maria Elisa de Souza E Silva, Mauro Henrique Nogueira Guimarães de Abreu
OBJECTIVE: To describe dental prescriptions for anxiolytics, sedatives, and hypnotics for Brazilian outpatients in 2010. METHODS: A cross-sectional study was conducted using data on the use of anxiolytics, sedatives, and hypnotics from the Brazilian Health Surveillance Agency, Brazil, 2010. For each prescription, prescribed drugs and the prescribed amount were identified. Prescribed medications were classified according to Anatomical Therapeutic Chemical code. We calculated the number of Defined Daily Doses (DDD) for anxiolytics, sedatives, and hypnotics by code, their mean DDD, and DDD per inhabitant per year...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28624183/the-neuroprotective-effect-of-perampanel-in-lithium-pilocarpine-rat-seizure-model
#5
Ting Wu, Katsutoshi Ido, Yoshihide Osada, Sadaharu Kotani, Akira Tamaoka, Takahisa Hanada
PURPOSE: Status epilepticus (SE) causes irreversible neurodegeneration if not terminated quickly. Perampanel (PER), a potent AMPA receptor antagonist, has previously been shown to terminate seizures in the lithium-pilocarpine SE model. In the present study, we assessed whether PER would also prevent neuronal damage in this model. METHODS: SE was induced in rats using lithium chloride and pilocarpine. Initiation of SE was defined as continuous seizures that exhibited as rearing accompanied by bilateral forelimb clonus (Racine score 4)...
June 14, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28622803/lab-on-paper-chip-integrated-with-si-gnrs-for-electroanalysis-of-diazepam
#6
Jagriti Narang, Chaitali Singhal, Ashish Mathur, Manika Khanuja, Ankur Varshney, Kartikey Garg, Tulika Dahiya, C S Pundir
We describe herein the fabrication of an electrochemical microfluidic paper based device (EμPAD) for the detection of diazepam, a sedative, anxiety-relieving and muscle-relaxing drug. To achieve it, silica coated gold nanorods (Si@GNRs) were synthesized and drop casted on an electrochemical microfluidic paper based device (EμPAD) for the detection of diazepam. The synthesized composites were characterized by recording its images in scanning electron microscope (SEM) and transmission electron microscope (TEM)...
August 8, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28622209/the-forgotten-treatment-of-alcohol-withdrawal-delirium-with-electroconvulsive-therapy-successful-use-in-a-very-prolonged-and-severe-case
#7
Laura Kranaster, Suna Su Aksay, Jan Malte Bumb, Christoph Janke, Alexander Sartorius
OBJECTIVE: Alcohol withdrawal delirium (AWD) is a notorious complication in alcohol withdrawal. Usually, the symptomatic treatment is efficacious; however, some patients show treatment resistance or a prolonged course of AWD. METHOD: We report the case of a patient with a prolonged and severest form of AWD. Even 11 weeks after admission, he received approximately 100 mg diazepam per week to manage the symptoms of withdrawal delirium. RESULTS: A treatment course of electroconvulsive therapy was initiated, which allowed a complete tapering off of benzodiazepines during electroconvulsive therapy without adverse effects...
June 16, 2017: Clinical Neuropharmacology
https://www.readbyqxmd.com/read/28620949/nonintravenous-rescue-medications-for-pediatric-status-epilepticus-a-cost-effectiveness-analysis
#8
Iván Sánchez Fernández, Marina Gaínza-Lein, Tobias Loddenkemper
OBJECTIVE: To quantify the cost-effectiveness of rescue medications for pediatric status epilepticus: rectal diazepam, nasal midazolam, buccal midazolam, intramuscular midazolam, and nasal lorazepam. METHODS: Decision analysis model populated with effectiveness data from the literature and cost data from publicly available market prices. The primary outcome was cost per seizure stopped ($/SS). One-way sensitivity analyses and second-order Monte Carlo simulations evaluated the robustness of the results across wide variations of the input parameters...
June 16, 2017: Epilepsia
https://www.readbyqxmd.com/read/28611581/glial-endozepines-inhibit-feeding-related-autonomic-functions-by-acting-at-the-brainstem-level
#9
Florent Guillebaud, Clémence Girardet, Anne Abysique, Stéphanie Gaigé, Rym Barbouche, Jérémy Verneuil, André Jean, Jérôme Leprince, Marie-Christine Tonon, Michel Dallaporta, Bruno Lebrun, Jean-Denis Troadec
Endozepines are endogenous ligands for the benzodiazepine receptors and also target a still unidentified GPCR. The endozepine octadecaneuropeptide (ODN), an endoproteolytic processing product of the diazepam-binding inhibitor (DBI) was recently shown to be involved in food intake control as an anorexigenic factor through ODN-GPCR signaling and mobilization of the melanocortinergic signaling pathway. Within the hypothalamus, the DBI gene is mainly expressed by non-neuronal cells such as ependymocytes, tanycytes, and protoplasmic astrocytes, at levels depending on the nutritional status...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28597912/acute-and-long-term-effects-of-brivaracetam-and-brivaracetam-diazepam-combinations-in-an-experimental-model-of-status-epilepticus
#10
Jerome Niquet, Lucie Suchomelova, Kerry Thompson, Henrik Klitgaard, Alain Matagne, Claude Wasterlain
OBJECTIVE: To evaluate acute and long-term effects of intravenous brivaracetam (BRV) and BRV + diazepam (DZP) combination treatment in a rat model of self-sustaining status epilepticus (SSSE). METHODS: Rats were treated with BRV (10 mg/kg) 10 min after initiation of perforant path stimulation (PPS) as early treatment; or BRV (10-300 mg/kg), DZP (1 mg/kg), or BRV (0.3-10 mg/kg) + DZP (1 mg/kg) 10 min after the end of PPS (established SSSE). Seizure activity was recorded electrographically for 24 h posttreatment (acute effects), and for 1 week at 6-8 weeks or 12 months' posttreatment (long-term effects)...
June 9, 2017: Epilepsia
https://www.readbyqxmd.com/read/28596835/chronic-diazepam-administration-increases-the-expression-of-lcn2-in-the-cns
#11
Tomonori Furukawa, Shuji Shimoyama, Yasuo Miki, Yoshikazu Nikaido, Kohei Koga, Kazuhiko Nakamura, Koichi Wakabayashi, Shinya Ueno
Benzodiazepines (BZDs), which bind with high affinity to gamma-aminobutyric acid type A receptors (GABAA-Rs) and potentiate the effects of GABA, are widely prescribed for anxiety, insomnia, epileptic discharge, and as anticonvulsants. The long-term use of BZDs is limited due to adverse effects such as tolerance, dependence, withdrawal effects, and impairments in cognition and learning. Additionally, clinical reports have shown that chronic BZD treatment increases the risk of Alzheimer's disease. Unusual GABAA-R subunit expression and GABAA-R phosphorylation are induced by chronic BZD use...
February 2017: Pharmacology Research & Perspectives
https://www.readbyqxmd.com/read/28587936/intra-hippocampal-microinjection-of-oxytocin-produced-antiepileptic-effect-on-the-pentylenetetrazol-induced-epilepsy-in-rats
#12
Amir Erfanparast, Esmaeal Tamaddonfard, Farzin Henareh-Chareh
BACKGROUND: In addition to its role as a circulating hormone, oxytocin can also act as a neurotransmitter and a neuromodulator within the brain. In this study, we investigated the intra-hippocampal effect of oxytocin on an experimental seizure model induced by pentylenetetrazole (PTZ) in rats. We also used atosiban (oxytocin antagonist), diazepam and flumazenil (gamma-aminobutyric acid or GABA-benzodiazepine receptor agonist and antagonist, respectively) to clarify the involved mechanism...
March 12, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28585447/anticonvulsant-effects-of-aerial-parts-of-verbena-officinalis-extract-in-mice-involvement-of-benzodiazepine-and-opioid-receptors
#13
Amir Rashidian, Fatemeh Kazemi, Saeed Mehrzadi, Ahmad Reza Dehpour, Shahram Ejtemai Mehr, Seyed Mahdi Rezayat
To evaluate the anticonvulsant activity of the aerial parts of Verbena officinalis used traditionally by local Iranians for the treatment of convulsion. The anticonvulsant activity of the extract was assessed in pentylenetetrazole (PTZ) and maximal electroshock (MES) induced seizures in mice. Diazepam was used as reference drug. In addition, for investigating the mechanism of V officinalis in PTZ model, flumazenil and naloxone were injected before V officinalis. The extract showed no toxicity and significantly increased the period taken before the onset and decreased the duration of the seizures induced by PTZ...
January 1, 2017: Journal of Evidence-based Complementary & Alternative Medicine
https://www.readbyqxmd.com/read/28574271/monomeric-octahedral-ruthenium-ii-complex-enabled-meta-c-h-nitration-of-arenes-with-removable-auxiliaries
#14
Zhoulong Fan, Jie Li, Heng Lu, Dong-Yu Wang, Chao Wang, Masanobu Uchiyama, Ao Zhang
A removable oxime-assisted meta-C-H nitration of arenes is reported. Mechanistic investigations and DFT calculations reveal a new monomeric octahedral ruthenium(II) complex is responsible for the meta-selective nitration. Dioxygen as a cooxidant is crucial for achieving high conversion and good yields. Moreover, the utility of the present reaction protocol is further showcased by the late-stage modification of the clinical CNS drugs Diazepam and Fluvoxamine.
June 2, 2017: Organic Letters
https://www.readbyqxmd.com/read/28570119/effect-of-opioids-and-benzodiazepines-on-clinical-outcomes-in-patients-receiving-palliative-care-an-exploratory-analysis
#15
Jason W Boland, Victoria Allgar, Elaine G Boland, Osaretin Oviasu, Meera Agar, David C Currow, Miriam J Johnson
BACKGROUND: Medications for symptom management in palliative care have associated, but poorly understood, harms. Drug-related harms have important clinical implications, may impact on patients' compliance and contribute to symptoms. OBJECTIVE: To explore the longitudinal relationship between oral morphine equivalent daily dose (MEDD) and oral diazepam equivalent daily dose (DEDD) with functional, cognitive, and symptom outcomes in patients receiving palliative care...
June 1, 2017: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/28554023/uptake-biotransformation-and-elimination-of-selected-pharmaceuticals-in-a-freshwater-invertebrate-measured-using-liquid-chromatography-tandem-mass-spectrometry
#16
Thomas H Miller, Nicolas R Bury, Stewart F Owen, Leon P Barron
Methods were developed to assess uptake and elimination kinetics in Gammarus pulex of nine pharmaceuticals (sulfamethazine, carbamazepine, diazepam, temazepam, trimethoprim, warfarin, metoprolol, nifedipine and propranolol) using targeted LC-MS/MS to determine bioconcentration factors (BCFs) using a 96 h toxicokinetic exposure and depuration period. The derived BCFs for these pharmaceuticals did not trigger any regulatory thresholds and ranged from 0 to 73 L kg(-1) (sulfamethazine showed no bioconcentration)...
September 2017: Chemosphere
https://www.readbyqxmd.com/read/28553362/modified-suanzaorentang-had-the-treatment-effect-for-generalized-anxiety-disorder-for-the-first-4-weeks-of-paroxetine-medication-a-pragmatic-randomized-controlled-study
#17
Ming-Fen Song, Lin-Lin Hu, Wen-Juan Liu, Yi Liu, Xiao-Yun Tao, Ting-Ting Wang, Sheng-Dong Wang, Long Zhang, Yong-Hua Zhang
Background. Paroxetine does not show satisfactory therapeutic effect for generalized anxiety disorder (GAD) patients for the first 2-4 weeks of medication. Diazepam is always concurrently used although it has some shortcomings such as physical dependence and withdrawal reactions. In this study, we aimed to identify whether modified Suanzaorentang (MSZRT), a combined Chinese formula including Suanzaorentang (SZRT) and Zhizichitang (ZZCT), could control the anxiety of GAD for the first 4 weeks of paroxetine medication...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28549311/reaction-of-diazepam-and-related-benzodiazepines-with-chlorine-kinetics-transformation-products-and-in-silico-toxicological-assessment
#18
Inmaculada Carpinteiro, Rosario Rodil, José Benito Quintana, Rafael Cela
In this work, the reaction of four benzodiazepines (diazepam, oxazepam, nordazepam and temazepam) during water chlorination was studied by means of liquid chromatography-quadrupole-time of flight-mass spectrometry (LC-QTOF-MS). For those compounds that showed a significant degradation, i.e. diazepam, oxazepam and nordazepam, parameters affecting to the reaction kinetics (pH, chlorine and bromide level) were studied in detail and transformation products were tentatively identified. The oxidation reactions followed pseudofirst-order kinetics with rate constants in the range of 1...
May 3, 2017: Water Research
https://www.readbyqxmd.com/read/28548045/3d-liver-membrane-system-by-co-culturing-human-hepatocytes-sinusoidal-endothelial-and-stellate-cells
#19
Haysam Mohamed Magdy Ahmed, Simona Salerno, Sabrina Morelli, Lidetta Giorno, Loredana De Bartolo
In this study, a designed approach has been utilized for the development of a 3D liver system. This approach makes use of primary human sinusoidal endothelial cells, stellate cells and hepatocytes that are seeded sequentially on hollow fiber membranes (HF) in order to mimic the layers of cells found in vivo. To this purpose modified polyethersulfone (PES) HF membranes were used for the creation of a 3D human liver system in static and dynamic conditions. In order to verify the positive effect of non-parenchymal cells on the maintenance of hepatocyte viability and functions, homotypic cultures of hepatocytes alone on the HF membranes were further investigated...
May 26, 2017: Biofabrication
https://www.readbyqxmd.com/read/28547577/pramipexole-overdose-associated-with-visual-hallucinations-agitation-and-myoclonus
#20
Adeline Cardon-Dunbar, Tom Robertson, Michael S Roberts, Geoffrey K Isbister
INTRODUCTION: Pramipexole is a dopamine D2 receptor agonist used to treat idiopathic Parkinson's disease and primary restless legs syndrome. There is limited information on pramipexole overdose. CASE REPORT: A 59-year-old male ingested 3 mg pramipexole, 2250 mg venlafaxine, 360 mg mirtazapine, with suicidal intent. He presented alert, had normal vital observations and normal pupillary reflexes. He was mildly agitated, reported visual hallucinations and was given 5 mg diazepam...
May 25, 2017: Journal of Medical Toxicology: Official Journal of the American College of Medical Toxicology
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