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https://www.readbyqxmd.com/read/29156592/activation-of-trek-1-but-not-trek-2-channel-by-mood-stabilizers
#1
Eun-Jin Kim, Dong Kun Lee, Seong-Geun Hong, Jaehee Han, Dawon Kang
Earlier studies have demonstrated that the tandem pore domain weak inward rectifying K⁺ channel (TWIK)-related K⁺ (TREK)-1 channel is inhibited by antidepressants and is associated with major depression. However, little is known about the effect of mood stabilizers that are commonly used for treatment of bipolar disorder on TREK channels, members of the two-pore domain K⁺ (K2P) channel family. This study sought to investigate the effect of mood stabilizers on TREK-1 and TREK-2 channels. HEK-293A cells were transfected with human TREK-1 or TREK-2 DNA...
November 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29150808/monitoring-enzymatic-degradation-of-emerging-contaminants-using-a-chip-based-robotic-nano-esi-ms-tool
#2
Lara F Stadlmair, Thomas Letzel, Johanna Graßmann
Up to now, knowledge of enzymes capable of degrading various contaminants of emerging concern (CEC) is limited, which is especially due to the lack of rapid screening methods. Thus, a miniaturized high-throughput setup using a chip-based robotic nanoelectrospray ionization system coupled to mass spectrometry has been developed to rapidly screen enzymatic reactions with environmentally relevant CECs. Three laccases, two tyrosinases, and two peroxidases were studied for their ability to transform ten pharmaceuticals and benzotriazole...
November 17, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29149702/an-hplc-tandem-mass-spectrometry-for-quantification-of-et-26-hcl-and-its-major-metabolite-in-plasma-and-application-to-a-pharmacokinetic-study-in-rats
#3
Xu Chen, Wensheng Zhang, Sandy Rios, Miriam B Morkos, Xiaoli Ye, Gen Li, Xuehua Jiang, Zhijun Wang, Ling Wang
ET-26-HCl is a new analog of etomidate, a short-acting anesthetic drug, with less adrenal cortex inhibition. The pharmacokinetics of ET-26-HCl in rats needs to be determined for future clinical trials in human subjects. In order to facilitate the pharmacokinetic study, a liquid chromatography based tandem mass spectrometric (HPLC-MS/MS) method was developed and validated for quantification of ET-26-HCl and its major metabolite, ET-26-acid. These two compounds and gabapentin (internal standard) were extracted using a protein precipitation method with methanol and detected by Multiple Reaction Monitoring of m/z transition of 275...
November 8, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29149144/the-efficacy-of-preoperative-gabapentin-in-spinal-surgery-a-meta-analysis-of-randomized-controlled-trials
#4
Chao Han, Ming-Jie Kuang, Jian-Xiong Ma, Xin-Long Ma
BACKGROUND: Pain management after spinal surgery has been studied for years. Gabapentin is a third-generation antiepileptic drug that selectively affects the nociceptive process and has been used for pain relief after surgery. However, the relationship between gabapentin and postoperative pain in spinal surgery is still controversial. OBJECTIVE: To assess the efficacy of the pre-emptive use of gabapentin in spinal surgery. STUDY DESIGN: A meta-analysis of randomized controlled studies...
November 2017: Pain Physician
https://www.readbyqxmd.com/read/29138592/dose-related-beneficial-and-harmful-effects-of-gabapentin-in-postoperative-pain-management-post-hoc-analyses-from-a-systematic-review-with-meta-analyses-and-trial-sequential-analyses
#5
REVIEW
Maria Louise Fabritius, Jørn Wetterslev, Ole Mathiesen, Jørgen B Dahl
Background: During the last 15 years, gabapentin has become an established component of postoperative pain treatment. Gabapentin has been employed in a wide range of doses, but little is known about the optimal dose, providing the best balance between benefit and harm. This systematic review with meta-analyses aimed to explore the beneficial and harmful effects of various doses of gabapentin administered to surgical patients. Materials and methods: Data in this paper were derived from an original review, and the subgroup analyses were predefined in an International Prospective Register of Systematic Reviews published protocol: PROSPERO (ID: CRD42013006538)...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/29130140/transforaminal-intrathecal-delivery-of-nusinersen-using-cone-beam-computed-tomography-for-children-with-spinal-muscular-atrophy-and-extensive-surgical-instrumentation-early-results-of-technical-success-and-safety
#6
John J Weaver, Niranjana Natarajan, Dennis W W Shaw, Susan D Apkon, Kevin S H Koo, Giri M Shivaram, Eric J Monroe
BACKGROUND: Nusinersen, the only treatment approved by the United States Food and Drug Administration for spinal muscular atrophy (SMA), is delivered intrathecally. Many children with SMA have extensive spinal instrumentation and deformities, often precluding the use of standard approaches for gaining intrathecal access. Furthermore the anatomical distortion that often occurs with rotoscoliosis can complicate the use of fluoroscopic guidance. Compared to fluoroscopy, CT affords superior guidance for complex needle placements...
November 13, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/29129580/the-%C3%AE-and-%C3%AE-2%C3%AE-auxiliary-subunits-of-cav1-channels-are-required-for-th2-lymphocyte-function-and-acute-allergic-airway-inflammation
#7
Nicolas Rosa, Emily Triffaux, Virginie Robert, Marion Mars, Martin Klein, Gregory Bouchaud, Astrid Canivet, Antoine Magnan, Jean-Charles Guéry, Lucette Pelletier, Magali Savignac
BACKGROUND: T-lymphocytes express not only the cell membrane calcium ORAI1 but also voltage-dependent Cav1 channels. In excitable cells, these channels are composed of the ion forming pore α1 and auxiliary subunits (β and α2δ) needed for proper trafficking and activation of the channel. We previously disclosed the role of Cav1.2 α1 in mouse and human Th2- but not Th1-cell functions and showed that knocking-down Cav1 α1 prevents experimental asthma OBJECTIVE: We investigated the role of β and α2δ auxiliary subunits on Cav1 α1 function in Th2 lymphocytes and on the development of acute allergic airway inflammation...
November 9, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29125423/management-of-chronic-neuropathic-pain-with-single-and-compounded-topical-analgesics
#8
Nebojsa Nick Knezevic, Tatiana Tverdohleb, Farid Nikibin, Ivana Knezevic, Kenneth D Candido
The goal of our review was to emphasize important aspects that physicians should take into consideration when prescribing topical analgesics as part of chronic neuropathic pain treatment. We discuss the dermatopharmacokinetics and microstructural components of the skin, differences between topical and transdermal drug delivery, and topical medication effects on peripheral neuropathy and central sensitization. Even though the US FDA approved topical analgesics are 8%-capsaicin and 5%-lidocaine patches for treating postherpetic neuralgia, there are many other studies conducted on the efficacy of topical ketamine cream, clonidine gel, topical gabapentin, topical baclofen and topical phenytoin for peripheral neuropathic pain, either alone or in combination with other formulations...
November 10, 2017: Pain Management
https://www.readbyqxmd.com/read/29123358/chronic-cancer-pain-diagnostic-dilemma-and-management-challenges
#9
Deepti Ahuja, Sachidanand Jee Bharati, Seema Mishra, Sushma Bhatnagar
A 32-year-old female, diagnosed case of neuroendocrine tumor of pancreas, was admitted to the pain and palliative care unit with complaints of diffuse abdominal pain which was severe in intensity with score on numerical rating scale-9/10. Pain was not relieved even after taking tablet morphine immediate release 360 mg every 4 hourly, paracetamol 500 mg 6 hourly, and gabapentin 300 mg 8 hourly. She had undergone distal pancreatectomy with splenectomy and also received multiple lines of chemotherapy. After making a diagnosis of opioid-induced hyperalgesia, opioid rotation from morphine to fentanyl was done...
October 2017: Indian Journal of Palliative Care
https://www.readbyqxmd.com/read/29121034/the-impact-of-advanced-opioid-drugs-and-analgesic-adjuvants-on-murine-macrophage-oxygen-burst
#10
Michael Kozlowski, Katarzyna Nazimek, Magdalena Wąsik, Iwona Filipczak-Bryniarska, Krzysztof Bryniarski
Macrophages (Mf) are a versatile group of phagocytic cells responsible for fulfilling a variety of immune functions, most notably for mounting the initial anti-microbial response and for the clearance of cellular debris and apoptotic bodies. The key processes for fulfilling these functions include the production of reactive oxygen intermediates (ROIs) and nitric oxide (NO). Mf also express a variety of receptors, including opioid, serotonin, and norepinephrine receptors, and thus can react to various substances...
2017: Folia Medica Cracoviensia
https://www.readbyqxmd.com/read/29120894/advances-in-pharmacotherapies-for-movement-disorders-in-children-current-limitations-and-future-progress
#11
Jean-Pierre Lin
PURPOSE OF REVIEW: In childhood, movement disorders are generated by a very large number of disorders of the nervous system, and the very different developmental ages at which these occur make studies of pharmacotherapy efficacy extremely difficult. In most clinical practices, medication used in management is by trial and error, and limited by lack of efficacy and/or adverse drug reactions leading to drug intolerance. Nevertheless, symptom reduction using polypharmacy must be balanced against any accompanying comorbidities such as poor attention and concentration, constipation, ileus, urinary retention, blurred vision sedation and respiratory depression...
December 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/29111148/effects-of-opioid-and-nonopioid-analgesics-on-canine-wheal-formation-and-cultured-human-mast-cell-degranulation
#12
Eric Schmidt-Rondon, Zhenping Wang, Shelle A Malkmus, Anna Di Nardo, Keith Hildebrand, Linda Page, Tony L Yaksh
Mast cell (MC) degranulation has been implicated in the side effect profile of a variety of clinically useful agents. Thus, after intrathecal delivery, formation of space-occupying, meningeally-derived masses may be related to local MC degranulation. We systematically characterized degranulating effects of opioid and nonopioid analgesics on cutaneous flares in the dog and in primary human MC (hMC) cultures. METHODS: Dogs were anesthetized with IV propofol and received intradermal (ID) injections (50μL)...
October 27, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29111014/negative-myoclonus-induced-by-gabapentin-and-pregabalin-a-case-series-and-systematic-literature-review
#13
Jung Bin Kim, Jin-Man Jung, Moon-Ho Park, Eun Ju Lee, Do-Young Kwon
INTRODUCTION: Negative myoclonus is a jerky, brief, and sudden interruption of voluntary muscle contraction. Although gabapentin and pregabalin have been reported to induce positive myoclonus in some patients with impaired renal function, there are only a few studies describing pregabalin- or gabapentin-induced negative myoclonus. This study reviewed patients who had developed pregabalin- or gabapentin-induced negative myoclonus. METHODS: We collected the patients with negative myoclonus who were referred to the department of neurology at a university-affiliated hospital and selected pregabalin- or gabapentin-induced negative myoclonus...
November 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29109971/%C3%AE-2%C3%AE-1-signaling-drives-cell-death-synaptogenesis-circuit-reorganization-and-gabapentin-mediated-neuroprotection-in-a-model-of-insult-induced-cortical-malformation
#14
Lauren A Lau, Farzad Noubary, Dongqing Wang, Chris G Dulla
Developmental cortical malformations (DCMs) result from pre- and perinatal insults, as well as genetic mutations. Hypoxia, viral infection, and traumatic injury are the most common environmental causes of DCMs, and are associated with the subsyndromes focal polymicrogyria and focal cortical dysplasia (FCD) Type IIId, both of which have a high incidence of epilepsy. Understanding the molecular signals that lead to the formation of a hyperexcitable network in DCMs is critical to devising novel treatment strategies...
September 2017: ENeuro
https://www.readbyqxmd.com/read/29108405/gabapentin-given-before-laparoscopic-sleeve-gastrectomy-reduces-postoperative-oxycodone-consumption-in-obese-patients-a-randomized-double-blind-placebo-controlled-trial
#15
Anna Rupniewska-Ladyko, Małgorzata Malec-Milewska, Ewa Kraszewska, Michal Pirozynski
BACKGROUND: Post-operative pain can be prevented. Gabapentin may be effective in this role. Our primary objective was to test the hypothesis that a prophylactic administration of gabapentin in obese patients before surgery has an opioid-sparing effect and reduces postoperative oxycodone consumption more efficiently than placebo. METHODS: The study enrolled 113 patients undergoing laparoscopic sleeve-gastrectomy under general anesthesia. The patients were randomly allocated to the control or gabapentin group and received a single oral dose of gabapentin 1200 mg or a matching placebo 1 h before surgery...
November 6, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/29105865/oral-medication-prescription-practices-of-tertiary-based-specialists-for-dystonia-in-children-with-cerebral-palsy
#16
Adrienne Harvey, Dinah Reddihough, Adam Scheinberg, Katrina Williams
AIM: To examine current clinical practice for prescribing medications for children with dystonic cerebral palsy (CP) by medical doctors working at a tertiary care centre. METHODS: Rehabilitation and developmental paediatric specialists completed: (i) a custom-designed online cross-sectional survey capturing their usual prescribing patterns; and (ii) one-page questionnaires detailing medication prescription for each child with CP who they started on a new medication for dystonia over a 12-month period...
November 6, 2017: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/29103335/nummular-headache-an-update-and-future-prospects
#17
María Luz Cuadrado, Pedro López-Ruiz, Ángel L Guerrero
Nummular headache (NH) is characterized by continuous or intermittent head pain, which remains confined to a round or oval shaped area of the scalp, generally 1 to 6 cm in diameter. Usually mild or moderate in intensity, some patients suffer severe acute exacerbations or continuous disabling pain. Areas covered: This article reviews epidemiological and clinical features of NH, the most recently proposed pathophysiological mechanisms, and state-of-the-art management according to the literature. Expert commentary: Information regarding true incidence and prevalence is lacking, but NH is a fairly common disorder in patients attending a headache clinic...
November 9, 2017: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/29099371/abuse-potential-of-gabapentin-in-dentistry
#18
Mea A Weinberg, Stuart L Segelnick, Joseph S Insler
Gabapentin is an anticonvulsant drug widely prescribed for various ailments, including orofacial pain. It was once thought to have no potential for abuse; however, the last decade has seen a dramatic rise in the nonmedical use of gabapentin, particularly among opioid-dependent patients. Gabapentin is sedating and interacts with other sedating medications such as opioids, which can lead to impairment and accidents and may raise the risk of overdose. Dentists must be aware of the potential for abuse of gabapentin and weigh its benefits against its risks when prescribing the drug...
November 2017: General Dentistry
https://www.readbyqxmd.com/read/29099247/effects-of-a-single-preappointment-dose-of-gabapentin-on-signs-of-stress-in-cats-during-transportation-and-veterinary-examination
#19
Karen A van Haaften, Lauren R Eichstadt Forsythe, Elizabeth A Stelow, Melissa J Bain
OBJECTIVE To determine the effects of oral gabapentin administration prior to veterinary examination on signs of stress in cats. DESIGN Randomized, blinded, crossover clinical trial. ANIMALS 20 healthy pet cats with a history of fractious behavior or signs of stress during veterinary examination. PROCEDURES Cats were scheduled for 2 veterinary visits 1 week apart and randomly assigned to receive a capsule containing 100 mg of gabapentin (13.0 to 29.4 mg/kg [5.9 to 13.4 mg/lb]) or placebo (lactose powder) prior to the first visit and the opposite treatment prior to the second visit...
November 15, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29097554/restless-legs-syndrome-clinical-features-diagnosis-and-a-practical-approach-to-management
#20
REVIEW
Subhashie Wijemanne, William Ondo
Restless legs syndrome (RLS) is a chronic neurological disorder that interferes with rest and sleep. It has a wide spectrum of symptom severity, and treatment is started when symptoms become bothersome. Dopamine agonists and calcium channel apha-2-delta antagonists (gabapentin, gabapentin enacarbil and pregabalin) are first-line treatments; calcium channel alpha-2-deltas are preferred over dopamine agonists because they give less augmentation, a condition with symptom onset earlier in the day and intensification of RLS symptoms...
December 2017: Practical Neurology
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