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https://www.readbyqxmd.com/read/28335036/validated-method-for-the-screening-and-quantification-of-baclofen-gabapentin-and-pregabalin-in-human-post-mortem-whole-blood-using-protein-precipitation-and-liquid-chromatography-tandem-mass-spectrometry
#1
Limon Nahar, Amy Smith, Rajan Patel, Rebecca Andrews, Sue Paterson
There has been a rapid increase in the number of prescriptions for baclofen (BLF), gabapentin (GBP) and pregabalin (PGL) in the UK since their introduction to therapy. Recent studies across the European Union and USA have shown the illicit abuse potential of these drugs and deaths have been observed. A simple, reliable and fully validated method was developed for the screening and quantification of BLF, GBP and PGL in human post-mortem (PM) blood. The analytes and their deuterated analogs as internal standard were extracted from blood using a single addition acetonitrile protein precipitation reaction followed by analysis using liquid chromatography-tandem mass spectrometry (LC-MS-MS) with triggered dynamic multiple reaction monitoring mode for simultaneous confirmation and quantification...
March 10, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28333667/effect-of-penetration-enhancers-on-the-percutaneous-delivery-of-pain-management-actives
#2
John Trimble, Bob Light
Transdermal compositions for pain management are comprised of nonsteroidal anti-inflammatory drugs, opioid drugs, and adjuvant drugs acting on: voltage-gated channels, gamma-aminobutyric acid receptors, acute musculoskeletal pain, and as an antidepressant. In this work, baclofen, bupivacaine, cyclobenzaprine, diclofenac, gabapentin, ibuprofen, ketamine, and pentoxifylline were loaded in transdermal compositions, prepared using a mixture of lipids (isopropyl palmitate and mineral oil) and one of two selected penetration enhancer mixtures: alkyl dimethicone, phenyl trimethicone, and polyoxyethylene sorbitan monostearate; and cetostearyl polyoxyethylene ether and ethylene oxide/propylene oxide copolymer...
May 2016: International Journal of Pharmaceutical Compounding
https://www.readbyqxmd.com/read/28324056/gabaergic-neurons-and-their-modulatory-effects-on-gnrh3-in-zebrafish
#3
Yanlong Song, Binbin Tao, Ji Chen, Shaoting Jia, Zuoyan Zhu, Vance L Trudeau, Wei Hu
Gamma-aminobutyric acid (GABA) is a major amino acid neurotransmitter in the vertebrate brain. To provide detailed information on the distribution of the GABA in zebrafish (Danio rerio), neurons were labeled with mCherry driven by the glutamic acid decarboxylase 67 (gad67) promoter. In the transgenic line Tg(gad67:mCherry), mCherry-positive gad67 cell bodies were predominantly localized to the olfactory bulb, pallial zones, subpallium zones, parvocellular preoptic nucleus, periventricular gray zone of optic tectum, torus semicircularis, posterior tuberculum, medial longitudinal fascicle, caudal zone of periventricular hypothalamus, and oculomotor nucleus...
January 23, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323246/the-role-of-spinal-gabab-receptors-in-cancelr-induced-bone-pain-in-rats
#4
Ya-Qun Zhou, Shu-Ping Chen, Dai-Qiang Liu, Anne Manyande, Wen Zhang, Shao-Bing Yang, Bing-Rui Xiong, Qiao-Chu Fu, Zhen-Peng Song, Heike Rittner, Da-Wei Ye, Yu-Ke Tian
Cancer-induced bone pain (CIBP) remains a major challenge in advanced cancer patients due to our lack of understanding of its mechanisms. Previous studies have demonstrated the vital role of GABAB receptors (GABABRs) in regulating nociception and various neuropathic pain models have shown diminished activity of GABABRs. However, the role of spinal GABABRs in CIBP remains largely unknown. In this study, we investigated the specific cellular mechanisms of GABABRs in the development and maintenance of CIBP in rats...
March 18, 2017: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28321555/medical-treatment-of-gastroesophageal-reflux-disease
#5
Daniel A Kroch, Ryan D Madanick
Medical treatment is effective in the majority of patients with gastroesophageal reflux disease (GERD). Lifestyle modifications are often recommended for patients with GERD, although the data supporting lifestyle recommendations are limited. Antacids are often used to treat the symptoms of GERD, but their effect is short-lived. H2-receptor antagonists and proton-pump inhibitors provide more effective options for remission of GERD symptoms and healing of esophagitis. Prokinetic medications (e.g., metoclopramide) have not been proven to help in the control of symptoms...
March 20, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28319872/intrathecal-baclofen-bolus-reduces-exaggerated-extensor-coactivation-during-pre-swing-and-early-swing-of-gait-after-acquired-brain-injury
#6
John W Chow, Stuart A Yablon, Dobrivoje S Stokic
OBJECTIVE: To characterize the concurrent activation of rectus femoris (RF) and medial gastrocnemius (MG) muscles (extensor coactivation) during gait in subjects with pronounced resting hypertonia after acquired brain injury (ABI) and examine changes after intrathecal baclofen (ITB) bolus injection. METHODS: Magnitude and duration of extensor coactivation during different phases of gait were assessed by recording gait kinematics and activity in bilateral RF and MG muscles in 18 controls and 18 ABI subjects before and at 2, 4, and 6h after a 50-μg ITB injection...
March 2, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28319159/drug-therapy-for-alcohol-dependence-in-primary-care-in-the-uk-a-clinical-practice-research-datalink-study
#7
Andrew Thompson, Darren M Ashcroft, Lynn Owens, Tjeerd P van Staa, Munir Pirmohamed
AIM: To evaluate drug therapy for alcohol dependence in the 12 months after first diagnosis in UK primary care. DESIGN: Open cohort study. SETTING: General practices contributing data to the UK Clinical Practice Research Database. PARTICIPANTS: 39,980 people with an incident diagnosis of alcohol dependence aged 16 years or older between 1 January 1990 and 31 December 2013. MAIN OUTCOME MEASURE: Use of pharmacotherapy (acamprosate, disulfiram, naltrexone, baclofen and topiramate) to promote abstinence from alcohol or reduce drinking to safe levels in the first 12 months after a recorded diagnosis of alcohol dependence...
2017: PloS One
https://www.readbyqxmd.com/read/28317271/baclofen-and-alcohol-dependent-patients-a-real-risk-of-severe-self-poisoning
#8
David Boels, Caroline Victorri-Vigneau, Marie Grall-Bronnec, Ali Touré, Anais Garnier, Alain Turcant, Gaël Le Roux
Baclofen is often prescribed in high doses to fight cravings experienced by alcohol-dependent patients. Such an increase in the availability of baclofen is concerning. This study aimed to determine the change in number and profile of self-poisoning with baclofen over time, since baclofen has become increasingly popular, in order to describe the severity of self-poisoning with baclofen and to focus on co-existing alcohol use disorders and psychiatric illnesses determine predictors of severity. This was a retrospective study of self-poisoning with baclofen as reported by the western France Poison Control Center (PCC), which represents a population of more than 12 million people from January 2008 to March 2014...
March 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28317070/lumbar-translaminar-fenestration-for-insertion-of-intrathecal-baclofen-catheter-a-novel-technique
#9
Manraj K S Heran, Hisham Al-Shikarchy, Carolyn Chowne
Intrathecal baclofen has long been known to be an efficacious treatment of spasticity in children with cerebral palsy. Test bolus administration is often necessary to ensure patients will benefit from this treatment. The introduction of a intrathecal catheter for test bolus administration can prove challenging in a subset of this population, particularly those who have received surgery with postoperative spinal fusion masses. We outline a novel technique of inserting a spinal catheter for test bolus administration in a patient with a postoperative fusion mass whereby a fenestration is created through the lamina using an osteotomy needle...
March 20, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28294133/the-gabab-positive-allosteric-modulator-adx71441-attenuates-alcohol-self-administration-and-relapse-to-alcohol-seeking-in-rats
#10
Eric Augier, Russell S Dulman, Ruslan Damadzic, Andrew Pilling, J Paul Hamilton, Markus Heilig
GABAergic signaling is involved in modulating the reinforcing properties of alcohol, and GABAB receptors have been proposed as a potential target for clinical treatment of alcoholism. The orthosteric GABAB receptor agonist baclofen has been shown to suppress operant self-administration of alcohol in animals and alcohol use in alcohol dependent patients, but its utility is limited by a narrow therapeutic index. We tested the effects of ADX71441, a novel GABAB receptor positive allosteric modulator on alcohol-related behaviors in rats...
March 15, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28291215/-complications-of-intrathecal-baclofen-therapy
#11
D L Paskhin, A V Dekopov, A A Tomsky, E D Isagulyan, E M Salova
AIM: To analyze complications of intrathecal baclofen therapy and identify high-risk groups. MATERIAL AND METHODS: We implanted 52 pumps to spastic patients for chronic intrathecal baclofen infusion. Two groups of patients were distinguished: 23 patients with spinal spasticity (group 1) and 29 patients with cerebral spasticity (group 2). The mean patient age was 37.2±14.6 years in group 1 and 17.3±10.3 years in group 2. Surgery was performed according to a standard procedure...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28275709/caudal-nucleus-accumbens-core-is-critical-in-the-regulation-of-cue-elicited-approach-avoidance-decisions
#12
Laurie Hamel, Tharshika Thangarasa, Osai Samadi, Rutsuko Ito
The nucleus accumbens (NAc) is thought to be a site of integration of positively and negatively valenced information and action selection. Functional differentiation in valence processing has previously been found along the rostrocaudal axis of the shell region of the NAc in assessments of unconditioned motivation. Given that the core region of the NAc has been implicated in the elicitation of motivated behavior in response to conditioned cues, we sought to assess the role of caudal, intermediate, and rostral sites within this subregion in cue-elicited approach-avoidance decisions...
January 2017: ENeuro
https://www.readbyqxmd.com/read/28271334/topical-treatments-for-localized-neuropathic-pain
#13
REVIEW
Roberto Casale, Z Symeonidou, M Bartolo
PURPOSE OF REVIEW: Topical therapeutic approaches in localized neuropathic pain (LNP) syndromes are increasingly used by both specialists and general practitioners, with a potentially promising effect on pain reduction. In this narrative review, we describe the available compounds for topical use in LNP syndromes and address their potential efficacy according to the literature. RECENT FINDINGS: Local anaesthetics (e.g., lidocaine, bupivacaine and mepivacaine), as well as general anaesthetic agents (e...
March 2017: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/28257279/intrathecal-baclofen-therapy-for-the-treatment-of-spasticity-in-sj%C3%A3-gren-larsson-syndrome
#14
Eveline Teresa Hidalgo, Cordelia Orillac, Andrew Hersh, David H Harter, William B Rizzo, Howard L Weiner
Intrathecal baclofen therapy is widely accepted as a treatment option for patients with severe spasticity. The current treatment of spasticity in patients with Sjögren-Larsson syndrome is largely symptomatic, given that no effective causal therapy treatments are available. We report the outcome of 2 patients with Sjögren-Larsson syndrome who had pump implantation for intrathecal baclofen. We observed a positive response, with a decrease of spasticity, reflecting in the Modified Ashworth Scale, and parents and caregivers observed a functional improvement in both patients...
January 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/28254772/central-inhibition-of-initiation-of-swallowing-by-systemic-administration-of-diazepam-and-baclofen-in-anaesthetized-rats
#15
Takanori Tsujimura, Shogo Sakai, Taku Suzuki, Izumi Ujihara, Kojun Tsuji, Jin Magara, Brendan J Canning, Makoto Inoue
Dysphagia is caused not only by neurological and/or structural damage but also by medication. We hypothesized memantine, dextromethorphan, diazepam and baclofen, all commonly used drugs with central sites of action, may regulate swallowing function. Swallows were evoked by upper airway (UA)/pharyngeal distension, punctate mechanical stimulation using a von Frey filament, capsaicin or distilled water (DW) applied topically to the vocal folds, and electrical stimulation of a superior laryngeal nerve (SLN) in anesthetized rats and were documented by recording electromyographic activation of the suprahyoid and thyrohyoid muscles and by visualizing laryngeal elevation...
March 2, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28247116/considerations-in-deep-brain-stimulation-dbs-for-pediatric-secondary-dystonia
#16
Deki Tsering, Laura Tochen, Bennett Lavenstein, Srijaya K Reddy, Yael Granader, Robert F Keating, Chima O Oluigbo
PURPOSE: There is a paucity of effective long-term medication treatment for secondary dystonias. In situations where significantly impairing secondary dystonias fail to respond to typical enteral medications and intrathecal (or even intraventricular) baclofen, consideration should be given to the use of deep brain stimulation (DBS). While Level I evidence and long-term follow-up clearly demonstrate the efficacy of DBS for primary dystonia, the evidence for secondary dystonia remains mixed and unclear...
February 28, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28242266/contributions-of-basolateral-amygdala-and-nucleus-accumbens-subregions-to-mediating-motivational-conflict-during-punished-reward-seeking
#17
Patrick T Piantadosi, Dylan C M Yeates, Mathew Wilkins, Stan B Floresco
The involvement of different nodes within meso-cortico-limbic-striatal circuitry in mediating reward-seeking has been well described, yet comparatively less is known about how such circuitry may regulate appetitively-motivated behaviors that may be punished. The basolateral amygdala (BLA) is one nucleus that has been implicated in suppressing punished reward-seeking, and this structure can modulate goal-directed behavior via projections to subregions of the nucleus accumbens (NAc). Here, we examined the effects of reversible inactivations of the BLA, NAc Shell (NAcS), and core (NAcC) on performance of a "Conflict" task where rats pressed a lever for sucrose reinforcement during three distinct 5min phases...
February 24, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28239338/differential-neural-responses-underlying-the-inhibition-of-the-startle-response-by-pre-pulses-or-gaps-in-mice
#18
Rocio Moreno-Paublete, Barbara Canlon, Christopher R Cederroth
Gap pre-pulse inhibition of the acoustic startle (GPIAS) is a behavioral paradigm used for inferring the presence of tinnitus in animal models as well as humans. In contrast to pre-pulse inhibition (PPI), the neural circuitry controlling GPIAS is poorly understood. To increase our knowledge on GPIAS, a comparative study with PPI was performed in mice combining these behavioral tests and c-Fos activity mapping in brain areas involved in the inhibition of the acoustic startle reflex (ASR). Both pre-pulses and gaps efficiently inhibited the ASR and abolished the induction of c-Fos in the pontine reticular nucleus...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28237420/long-term-therapy-with-intrathecal-baclofen-improves-quality-of-life-in-children-with-severe-spastic-cerebral-palsy
#19
Tanja Kraus, Kathrin Gegenleitner, Martin Svehlik, Michael Novak, Gerhardt Steinwender, Georg Singer
INTRODUCTION: Children with severe spastic cerebral palsy (CP) are highly limited in daily life activities causing a reduced quality of life (QoL). This is partly due to an increased muscle tone causing pain and contractures. Continuous intrathecal infusion of baclofen (ITB) reduces the spasticity of affected patients. The hypothesis of the present study was that ITB leads to a significant improvement of QoL in non-ambulant children with CP. PATIENTS AND METHODS: 13 patients (10 male, 3 female, mean age 14 years) were included...
February 11, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28225750/baclofen-related-mania-lower-threshold-for-bipolar-patients
#20
Ruchita Shah, Himanshu Singla
No abstract text is available yet for this article.
April 2017: Journal of Clinical Psychopharmacology
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