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https://www.readbyqxmd.com/read/28812400/new-benzodiazepine-and-z-hypnotic-users-and-disability-pension-an-eight-year-nationwide-observational-follow-up-study
#1
Ingunn F Tvete, Trine Bjørner, Tor Skomedal
OBJECTIVE: To compare how newly initiated treatment with benzodiazepines, Z-hypnotics or both associates with the reception of disability pension among 40,661 individuals of a working age. DESIGN: Prescription register study. SETTING: Norwegian nationwide prescriptions socio-economic and disability status data. METHODS: Cox regression analyses. SUBJECTS: New benzodiazepine or Z-hypnotic users. MAIN OUTCOME MEASURE: Time to receive disability pension given benzodiazepine or Z-hypnotic use or both...
August 16, 2017: Scandinavian Journal of Primary Health Care
https://www.readbyqxmd.com/read/28812061/behavioral-comorbidities-and-drug-treatments-in-a-zebrafish-scn1lab-model-of-dravet-syndrome
#2
Brian P Grone, Tiange Qu, Scott C Baraban
Loss-of-function mutations in SCN1A cause Dravet syndrome (DS), a catastrophic childhood epilepsy in which patients experience comorbid behavioral conditions, including movement disorders, sleep abnormalities, anxiety, and intellectual disability. To study the functional consequences of voltage-gated sodium channel mutations, we use zebrafish with a loss-of-function mutation in scn1lab, a zebrafish homolog of human SCN1A. Homozygous scn1lab(s552/s552) mutants exhibit early-life seizures, metabolic deficits, and early death...
July 2017: ENeuro
https://www.readbyqxmd.com/read/28811247/pharmacological-analysis-of-poecilotheria-spider-venoms-in-mice-provides-clues-for-human-treatment
#3
Alexander Andreev-Andrievskiy, Anfisa Popova, Evgeniia Lagereva, Daniil Osipov, Antonina Berkut, Eugene Grishin, Alexander Vassilevski
Bites of tiger spiders belonging to Poecilotheria genus cause moderate to severe pain and long-lasting local or generalized muscle cramps in humans. Bites occur in regions of the spiders' natural habitat, India and Sri Lanka, but the popularity of these colorful tarantulas as pets leads to reports of envenomation cases worldwide. Treatment is predominantly symptomatic and often inadequate since there is almost no clinical or toxicology research data available, and physicians outside India or Sri Lanka typically have no experience in treating such cases...
August 12, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28797721/intact-blood-brain-barrier-transport-of-small-molecular-drugs-in-animal-models-of-amyloid-beta-and-alpha-synuclein-pathology
#4
Sofia Gustafsson, Veronica Lindström, Martin Ingelsson, Margareta Hammarlund-Udenaes, Stina Syvänen
Pathophysiological impairment of the neurovascular unit, including the integrity and dynamics of the blood-brain barrier (BBB), has been denoted both a cause and consequence of neurodegenerative diseases. Pathological impact on BBB drug delivery has also been debated. The aim of the present study was to investigate BBB drug transport, by determining the unbound brain-to-plasma concentration ratio (Kp,uu,brain), in aged AβPP-transgenic mice, α-synuclein transgenic mice, and wild type mice. Mice were dosed with a cassette of five compounds, including digoxin, levofloxacin (1 mg/kg, s...
August 5, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28789699/oral-pyridoxine-can-substitute-for-intravenous-pyridoxine-in-managing-patients-with-severe-poisoning-with-isoniazid-and-rifampicin-fixed-dose-combination-tablets-a-case-report
#5
M D S A Dilrukshi, C A P Ratnayake, C A Gnanathasan
BACKGROUND: Fixed drug combination of isoniazid and rifampicin is a rare cause of poisoning even in endemic countries for tuberculosis infection. Severe poisoning can cause severe morbidity and mortality if not treated promptly. Though intravenous pyridoxine is the preferred antidote for severe standard isoniazid poisoning it is not freely available even in best of care centers. We describe a case of severe poisoning with fixed drug combination of isoniazid and rifampicin successfully managed with oral pyridoxine at national hospital of Sri Lanka...
August 8, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28783904/five-year-monitoring-of-19-illicit-and-legal-substances-of-abuse-at-the-inlet-of-a-wastewater-treatment-plant-in-barcelona-ne-spain-and-estimation-of-drug-consumption-patterns-and-trends
#6
Nicola Mastroianni, Ester López-García, Cristina Postigo, Damià Barceló, Miren López de Alda
Illicit and legal drugs of abuse, including alcohol, continue to be in the focus of many governmental national and international studies due to the important consequences of their consumption at both individual and social level. Estimation of drug use at the community level from the concentrations of the drugs themselves or their major metabolites measured in wastewater has become an increasingly accepted and extended tool, complementary to the methods traditionally used for this purpose. The present work describes the application of this approach, generally known as wastewater epidemiology, to investigate the latest drug consumption patterns and trends in the European city of Barcelona...
July 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28782830/altered-behavioral-responses-to-gamma-aminobutyric-acid-pharmacological-agents-in-a-mouse-model-of-huntington-s-disease
#7
Yi-Ting Hsu, Ya-Gin Chang, Ching-Pang Chang, Jian-Jing Siew, Hui-Mei Chen, Chon-Haw Tsai, Yijuang Chern
BACKGROUND: Disruptions in gamma-aminobutyric (GABA) acid signaling are believed to be involved in Huntington's disease pathogenesis, but the regulation of GABAergic signaling remains elusive. Here we evaluated GABAergic signaling by examining the function of GABAergic drugs in Huntington's disease and the expression of GABAergic molecules using mouse models and human brain tissues from Huntington's disease. METHODS: We treated wild-type and R6/2 mice (a transgenic Huntington's disease mouse model) acutely with vehicle, diazepam, or gaboxadol (drugs that selectively target synaptic or extrasynaptic GABAA receptors) and monitored their locomotor activity...
August 7, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28776277/anti-epileptic-activity-of-nelumbo-nucifera-fruit
#8
Muhammad Ali Rajput, Rafeeq Alam Khan, Tahira Assad
Epilepsy is the most commonly encountered neurological disorder affecting around 70 million people worldwide, out of which approximately 80% belongs to developing countries. Several shortcomings appeared with the use of conventional antiepileptic agents like, inadequate seizure control, side effects and cost which limit their use. Thus extensive studies are necessary to investigate the pharmacological effects of plants, which would facilitate discovery of novel drugs from herbal source permitting their use to benefit mankind...
August 3, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28767661/impact-of-stress-fear-and-anxiety-on-the-nociceptive-responses-of-larval-zebrafish
#9
Javier Lopez-Luna, Qussay Al-Jubouri, Waleed Al-Nuaimy, Lynne U Sneddon
Both adult and larval zebrafish have been demonstrated to show behavioural responses to noxious stimulation but also to potentially stress- and fear or anxiety- eliciting situations. The pain or nociceptive response can be altered and modulated by these situations in adult fish through a mechanism called stress-induced analgesia. However, this phenomenon has not been described in larval fish yet. Therefore, this study explores the behavioural changes in larval zebrafish after noxious stimulation and exposure to challenges that can trigger a stress, fear or anxiety reaction...
2017: PloS One
https://www.readbyqxmd.com/read/28766407/anticonvulsant-effects-of-thiamine-on-pentylenetetrazole-induced-seizure-in-mice
#10
Azam Mesdaghinia, Marziye Alinejad, Alireza Abed, Azhdar Heydari, Hamid Reza Banafshe
OBJECTIVES: Thiamine serves as a cofactor for several enzymes involved in brain function and neurotransmitters biosynthesis. Thiamine-dependent enzymes are important for oxidant stress defenses. Several studies have reported that thiamine deficiency in the central nervous system reduces seizure threshold. The present study was designed to investigate the effect of acute and chronic administration of thiamine alone and in combination with sub-effective dose of diazepam on pentylenetetrazole (PTZ)-induced tonic-clonic seizures in mice...
August 2, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28762846/biomimetic-synthesis-of-proline-derivative-templated-mesoporous-silica-for-increasing-the-brain-distribution-of-diazepam-and-improving-the-pharmacodynamics-of-nimesulide
#11
Heran Li, Jianxin Wang, Jialiang Cong, Chen Wei, Jing Li, Hongzhuo Liu, Sanming Li, Mingshi Yang
Herein a new kind of proline-derivative templated mesoporous silica with curved channels (CMS) was biomimetically synthesized and applied as carrier to improve the drug dissolution and bioavailability of hydrophobic diazepam (DZP) and nimesulide (NMS). Drugs can be incorporated into CMS with high efficiency; during this process, they successfully transformed to amorphous phase. As a result, the dissolution rate of DZP and NMS was significantly improved. Biodistribution study confirmed that CMS converted DZP distribution in mice with the tendency of lung targeting and brain targeting...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28760161/mutation-induced-loss-of-app-function-causes-gabaergic-depletion-in-recessive-familial-alzheimer-s-disease-analysis-of-osaka-mutation-knockin-mice
#12
Tomohiro Umeda, Tetsuya Kimura, Kayo Yoshida, Keizo Takao, Yuki Fujita, Shogo Matsuyama, Ayumi Sakai, Minato Yamashita, Yuki Yamashita, Kiyouhisa Ohnishi, Mamiko Suzuki, Hiroshi Takuma, Tsuyoshi Miyakawa, Akihiko Takashima, Takashi Morita, Hiroshi Mori, Takami Tomiyama
The E693Δ (Osaka) mutation in APP is linked to familial Alzheimer's disease. While this mutation accelerates amyloid β (Aβ) oligomerization, only patient homozygotes suffer from dementia, implying that this mutation is recessive and causes loss-of-function of amyloid precursor protein (APP). To investigate the recessive trait, we generated a new mouse model by knocking-in the Osaka mutation into endogenous mouse APP. The produced homozygous, heterozygous, and non-knockin littermates were compared for memory, neuropathology, and synaptic plasticity...
July 31, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/28758946/hippocampal-proteome-of-rats-subjected-to-the-li-pilocarpine-epilepsy-model-and-the-effect-of-carisbamate-treatment
#13
José Eduardo Marques-Carneiro, Daniele Suzete Persike, Julia Julie Litzahn, Jean-Christophe Cassel, Astrid Nehlig, Maria José da Silva Fernandes
In adult rats, the administration of lithium-pilocarpine (LiPilo) reproduces most clinical and neuropathological features of human temporal lobe epilepsy (TLE). Carisbamate (CRS) possesses the property of modifying epileptogenesis in this model. Indeed, about 50% of rats subjected to LiPilo status epilepticus (SE) develop non-convulsive seizures (NCS) instead of motor seizures when treated with CRS. However, the mechanisms underlying these effects remain unknown. The aim of this study was to perform a proteomic analysis in the hippocampus of rats receiving LiPilo and developing motor seizures or NCS following CRS treatment...
July 30, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/28750304/stability-of-benzodiazepines-in-hair-after-prolonged-exposure-to-chlorinated-water
#14
Luca Morini, Fulvia Pozzi, Angelo Groppi
INTRODUCTION: An in vitro study on authentic positive samples was carried out, aiming the evaluation of the effect of chlorinated water on benzodiazepines in hair. Two subjects exposed to chlorinated water for several consecutive times were also investigated. METHOD: Seven hair samples collected from autopsy cases, previously tested positive for benzodiazepines, were washed with dichloromethane and methanol. They were longitudinally divided in six aliquots of about 30mg...
July 14, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28736097/alcoholic-pellagra-as-a-cause-of-altered-mental-status-in-the-emergency-department
#15
Sarah Luthe Kyuragi, Ryota Sato
BACKGROUND: Pellagra, which is caused by a deficiency of niacin and tryptophan, the precursor of niacin, is a rare disease in developed countries where alcoholism is a major risk factor due to malnutrition and lack of B vitamins. Although pellagra involves treatable dementia and psychosis, it is often underdiagnosed, especially in developed countries. CASE REPORT: In Japan, a 37-year-old man presented to the emergency department with altered mental status and seizures...
July 20, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28735367/short-term-and-long-term-effects-of-diazepam-on-the-memory-for-discrimination-and-generalization-of-scopolamine
#16
C Casasola-Castro, L Weissmann-Sánchez, E Calixto-González, A Aguayo-Del Castillo, D N Velázquez-Martínez
Benzodiazepines are among the most widely prescribed and misused psychopharmaceutical drugs. Although they are well-tolerated, they are also capable of producing amnestic effects similar to those observed after pharmacological or organic cholinergic dysfunction. To date, the effect of benzodiazepine diazepam on the memory for discrimination of anticholinergic drugs has not been reported. The aim of the present study was to analyze the immediate and long-term effects of diazepam on a drug discrimination task with scopolamine...
July 22, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28735156/adaptive-periodic-paralysis-allows-weaning-deep-sedation-overcoming-the-drowning-syndrome-in-ecmo-patients-bridged-for-lung-transplantation-a-case-series
#17
Irina Timofte, Michael Terrin, Erik Barr, June Kim, Joseph Rinaldi, Nicholas Ladikos, Jay Menaker, Ali Tabatabai, Zachary Kon, Bartley Griffith, Richard Pierson, Si Pham, Aldo Iacono, Daniel Herr
PURPOSE: Sedation in extracorporeal membrane oxygenation (ECMO) is challenging. Patients require deep sedation because of extremely high respiratory rates and increased work of breathing ("Drowning Syndrome") resulting in altered intra-thoracic pressure and reduced pump flow associated with hemodynamic compromise and decreased oxygenation. However, deep sedation impedes essential active rehabilitation with physical therapy. METHODS: We reviewed data on 3 ECMO patients for whom we used a novel approach to replace continuous drips with periodic sedation/paralysis...
July 17, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28727688/diazepam-actions-in-the-vta-enhance-social-dominance-and-mitochondrial-function-in-the-nucleus-accumbens-by-activation-of-dopamine-d1-receptors
#18
M A van der Kooij, F Hollis, L Lozano, I Zalachoras, S Abad, O Zanoletti, J Grosse, I Guillot de Suduiraut, C Canto, C Sandi
Benzodiazepines can ameliorate social disturbances and increase social competition, particularly in high-anxious individuals. However, the neural circuits and mechanisms underlying benzodiazepines' effects in social competition are not understood. Converging evidence points to the mesolimbic system as a potential site of action for at least some benzodiazepine-mediated effects. Furthermore, mitochondrial function in the nucleus accumbens (NAc) has been causally implicated in the link between anxiety and social competitiveness...
July 20, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28724165/cytogenotoxicity-of-inclusion-complexes-of-diazepam-with-2-hydroxypropyl-%C3%AE-cyclodextrin
#19
Jasmina Hadžiabdić, Nevenka Kopjar, Davor Želježić, Selma Špirtović-Halilović, Davorka Završnik
Background Diazepam, as one of the most frequent prescribed drug from 1,4-benzodiazepine group, has certain limitations in pharmaceutical technology due to its poor solubility in water. By forming inclusion complexes with 2-hydroxypropyl-β-cyclodextrin, diazepam's biopharmaceutical properties can be greatly improved. Aim Aim of this research was to in vitro evaluate genotoxicity of prepared novel complexes of diazepam and their influence on proliferation of human peripheral blood lymphocytes. Methods For identification of possible genotoxicity of diazepam inclusion complexes, cytokinesis-block micronucleus assay has been chosen...
July 19, 2017: Drug Research
https://www.readbyqxmd.com/read/28718026/solid-phase-extraction-of-multi-class-pharmaceuticals-from-environmental-water-samples-onto-modified-multi-walled-carbon-nanotubes-followed-by-lc-ms-ms
#20
Bojana Lalović, Tatjana Đurkić, Marija Vukčević, Ivona Janković-Častvan, Ana Kalijadis, Zoran Laušević, Mila Laušević
In this paper, pristine and chemically treated multi-walled carbon nanotubes (MWCNTs) were employed as solid-phase extraction sorbents for the isolation and enrichment of multi-class pharmaceuticals from the surface water and groundwater, prior to liquid chromatography-tandem mass spectrometry analysis. Thirteen pharmaceuticals that belong to different therapeutical classes (erythromycin, azithromycin, sulfamethoxazole, diazepam, lorazepam, carbamazepine, metoprolol, bisoprolol, enalapril, cilazapril, simvastatin, clopidogrel, diclofenac) and two metabolites of metamizole (4-acetylaminoantipyrine and 4-formylaminoantipyrine) were selected for this study...
July 17, 2017: Environmental Science and Pollution Research International
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