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https://www.readbyqxmd.com/read/29329017/amiodarone-a-multi-channel-blocker-enhances-anticonvulsive-effect-of-carbamazepine-in-the-mouse-maximal-electroshock-model
#1
Monika Banach, Monika Popławska, Kinga K Borowicz-Reutt
Cardiac arrhythmia may occur in the course of epilepsy. Simultaneous therapy of the two diseases might be complicated by drug interactions since antiarrhythmic and antiepileptic agents share some molecular targets. The aim of this study was to evaluate the influence of amiodarone, an antiarrhythmic drug working as a multi-channel blocker, on the protective activity of four classical antiepileptic drugs in the maximal electroshock test in mice. Amiodarone at doses up to 75 mg/kg did not affect the electroconvulsive threshold in mice...
January 5, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29320603/drug-management-for-acute-tonic-clonic-convulsions-including-convulsive-status-epilepticus-in-children
#2
REVIEW
Amy McTague, Timothy Martland, Richard Appleton
BACKGROUND: Tonic-clonic convulsions and convulsive status epilepticus (currently defined as a tonic-clonic convulsion lasting at least 30 minutes) are medical emergencies and require urgent and appropriate anticonvulsant treatment. International consensus is that an anticonvulsant drug should be administered for any tonic-clonic convulsion that has been continuing for at least five minutes. Benzodiazepines (diazepam, lorazepam, midazolam) are traditionally regarded as first-line drugs and phenobarbital, phenytoin and paraldehyde as second-line drugs...
January 10, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29315524/neonatal-phenobarbital-exposure-disrupts-gabaergic-synaptic-maturation-in-rat-ca1-neurons
#3
Nour Al-Muhtasib, Alberto Sepulveda-Rodriguez, Stefano Vicini, Patrick A Forcelli
OBJECTIVE: Phenobarbital is the most commonly utilized drug for the treatment of neonatal seizures. The use of phenobarbital continues despite growing evidence that it exerts suboptimal seizure control and is associated with long-term alterations in brain structure, function, and behavior. Alterations following neonatal phenobarbital exposure include acute induction of neuronal apoptosis, disruption of synaptic development in the striatum, and a host of behavioral deficits. These behavioral deficits include those in learning and memory mediated by the hippocampus...
January 5, 2018: Epilepsia
https://www.readbyqxmd.com/read/29301444/the-search-of-car-ahr-esrs-binding-sites-in-promoters-of-intronic-and-intergenic-micrornas
#4
Vladimir Y Ovchinnikov, Denis V Antonets, Lyudmila F Gulyaeva
MicroRNAs (miRNAs) play important roles in the regulation of gene expression at the post-transcriptional level. Many exogenous compounds or xenobiotics may affect microRNA expression. It is a well-established fact that xenobiotics with planar structure like TCDD, benzo(a)pyrene (BP) can bind aryl hydrocarbon receptor (AhR) followed by its nuclear translocation and transcriptional activation of target genes. Another chemically diverse group of xenobiotics including phenobarbital, DDT, can activate the nuclear receptor CAR and in some cases estrogen receptors ESR1 and ESR2...
December 10, 2017: Journal of Bioinformatics and Computational Biology
https://www.readbyqxmd.com/read/29297840/management-of-a-reeve-s-muntjac-muntiacus-reevesi-with-seizures-using-levetiracetam
#5
Emily R Blatt, Kathryn E Seeley, Mathew C Lovett, Randall E Junge
This report describes the diagnosis and management of idiopathic epilepsy in a 4-yr-old intact female Reeve's muntjac ( Muntiacus reevesi). The patient was initially witnessed to have isolated paroxysmal events consistent with epileptic seizures (altered consciousness, lateral recumbency, tonic/clonic movement of limbs) lasting less than 3 min with an immediate return to normal consciousness. The seizure frequency increased to >3 seizures within 24 hr and phenobarbital 3 mg/kg orally every 12 hr was started...
December 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/29285606/the-formation-of-estrogen-like-tamoxifen-metabolites-and-their-influence-on-enzyme-activity-and-gene-expression-of-adme-genes
#6
Janina Johänning, Patrick Kröner, Maria Thomas, Ulrich M Zanger, Astrid Nörenberg, Michel Eichelbaum, Matthias Schwab, Hiltrud Brauch, Werner Schroth, Thomas E Mürdter
Tamoxifen, a standard therapy for breast cancer, is metabolized to compounds with anti-estrogenic as well as estrogen-like action at the estrogen receptor. Little is known about the formation of estrogen-like metabolites and their biological impact. Thus, we characterized the estrogen-like metabolites tamoxifen bisphenol and metabolite E for their metabolic pathway and their influence on cytochrome P450 activity and ADME gene expression. The formation of tamoxifen bisphenol and metabolite E was studied in human liver microsomes and Supersomes™...
December 28, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/29283003/a-particular-case-of-accidental-asphyxiation
#7
Cristian D'Ovidio, Enrica Rosato, Martina Bonelli, Aldo Carnevale, Luigi T Marsella
The case reported involved a 60-year-old man with psychiatric illness who was found dead at his home. He was almost naked and showed signs of death by violent asphyxiation, which led to the suspicion of homicide. Autopsy findings showed foreign material in the trachea and larynx. However, the partially digested content in his stomach, the study of the gastric content and the microscopic analysis the airways made it possible to define this as accidental death due to inhalation of material from a diaper. Toxicological analysis detected the presence of phenytoin, valproic acid, and phenobarbital in his blood, with values within the therapeutic ranges...
January 1, 2017: Medicine, Science, and the Law
https://www.readbyqxmd.com/read/29276297/patient-outcomes-associated-with-phenobarbital-use-with-or-without-benzodiazepines-for-alcohol-withdrawal-syndrome-a-systematic-review
#8
Drayton A Hammond, Jordan M Rowe, Adrian Wong, Tessa L Wiley, Kristen C Lee, Sandra L Kane-Gill
Purpose: Benzodiazepines are the drug of choice for alcohol withdrawal syndrome (AWS); however, phenobarbital is an alternative agent used with or without concomitant benzodiazepine therapy. In this systematic review, we evaluate patient outcomes with phenobarbital for AWS. Methods: Medline, Cochrane Library, and Scopus were searched from 1950 through February 2017 for controlled trials and observational studies using ["phenobarbital" or "barbiturate"] and ["alcohol withdrawal" or "delirium tremens."] Risk of bias was assessed using tools recommended by National Heart, Lung, and Blood Institute...
October 2017: Hospital Pharmacy
https://www.readbyqxmd.com/read/29244082/quantitation-of-cocaine-and-metabolites-phencyclidine-butalbital-and-phenobarbital-in-meconium-by-liquid-chromatography-tandem-mass-spectrometry
#9
Triniti L Scroggin, Gwendolyn A McMillin
In this study, a quantitative polarity switching liquid chromatography coupled with a tandem mass spectrometer (LC-MS/MS) method was developed to detect and quantify cocaine and metabolites (cocaethylene, benzoylecgonine and meta-hydroxybenzoylecgonine), phencyclidine (PCP) and barbiturates (phenobarbital and butalbital) in meconium. Accuracy and precision samples at 0.0125% and 75% of the upper limit of quantitation (ULOQ) were analyzed in triplicate over 5 days with accuracy above 84% and average %CV values below 11%...
December 13, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/29237388/crigler-najjar-syndrome-current-perspectives-and-the-application-of-clinical-genetics
#10
Ammar Ebrahimi, Fakher Rahim
Crigler-Najjar syndrome (CNS, OMIM: 218800) is the paradigm of an inborn error of metabolism and a rare genetic disease with an estimated incidence of 0.6-1.0 per million live births. Discrimination between CNS subtypes is usually done on the basis of the clinical criteria, such as response to phenobarbital treatment and other molecular and functional characteristics. The identification of four novel pathogenic mutations and the analysis of residual activity of missense in UGT1A1 gene are useful for clinical diagnosis, and may reveal a new insight in enzyme activity, whereas the identification of pathogenic mutations will accelerate genetic counseling for newly identified CNS patients...
December 13, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/29228314/demodifying-rna-for-transcriptomic-analyses-of-archival-formalin-fixed-paraffin-embedded-samples
#11
Leah C Wehmas, Charles E Wood, Remi Gagne, Andrew Williams, Carole Yauk, Mark M Gosink, Deidre Dalmas, Ruixin Hao, Raegan O'Lone, Susan Hester
Archival formalin-fixed paraffin-embedded (FFPE) tissue samples offer a vast but largely untapped resource for genomic research. The primary technical issues limiting use of FFPE samples are RNA yield and quality. In this study, we evaluated methods to demodify RNA highly fragmented and crosslinked by formalin fixation. Primary endpoints were RNA recovery, RNA-sequencing quality metrics, and transcriptional responses to a reference chemical (phenobarbital, PB). Frozen mouse liver samples from control and PB groups (n = 6/group) were divided and preserved for 3 months as follows: frozen (FR); 70% ethanol (OH); 10% buffered formalin for 18 hours followed by ethanol (18F); or 10% buffered formalin (3F)...
December 7, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29227795/divergent-effects-of-levetiracetam-and-tiagabine-against-spontaneous-seizures-in-adult-rats-following-neonatal-hypoxia
#12
Raymond Dunn, Bridget N Queenan, Daniel T S Pak, Patrick A Forcelli
Animal models are valuable tools for screening novel therapies for patients who suffer from epilepsy. However, a wide array of models are necessary to cover the diversity of human epilepsies. In humans, neonatal hypoxia (or hypoxia-ischemia) is one of the most common causes of epilepsy early in life. Hypoxia-induced seizures (HS) during the neonatal period can also lead to spontaneous seizures in adulthood. This phenomenon, i.e., early-life hypoxia leading to adult epilepsy - is also seen in experimental models, including rats...
December 5, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29227273/-poisoning-by-psychopharmacological-drugs-in-azerbaijan-the-results-of-8-year-prospective-observation
#13
I Afandiyev, V Azizov
Acute poisoning of chemical etiology is a significant global public health problem. The aim of this study was the analysis of the toxicoepidemiological structure of psychopharmacological drugs poisoning in Azerbaijan. We collected and analyzed the data on all cases of acute poisoning by psychopharmacological drugs (codes of categories T42/T43 ICD-10) undergoing inpatient treatment at the Center of Clinical Toxicology in Baku, Azerbaijan in 2009-2016. The total number of patients with acute intoxication by psychopharmacological drugs was 3,413, which was 48...
November 2017: Georgian Medical News
https://www.readbyqxmd.com/read/29219065/transactivation-assays-that-identify-indirect-and-direct-activators-of-human-pregnane-x-receptor-pxr-nr1i2-and-constitutive-androstane-receptor-car-nr1i3
#14
Marija Pinne, Elsa Ponce, Judy L Raucy
BACKGROUND: Nuclear receptors (NRs), including PXR and CAR, are presumed to be ligand-dependent transcription factors, but ligand binding is not an absolute requirement for activation. Indeed, many compounds activate PXR and CAR by indirect mechanisms. Detecting these indirect activators of specific nuclear receptors in vitro has been difficult. As NR activation of either or both PXR and CAR can lead to drug-drug interactions and adverse drug effects, false negatives obtained with screening tools incapable of detecting indirect activators could present liabilities...
December 6, 2017: Drug Metabolism Letters
https://www.readbyqxmd.com/read/29210977/influence-of-comedication-on-levetiracetam-pharmacokinetics
#15
Azucena Aldaz, Natalia Alzueta, César Viteri
BACKGROUND: Evaluate the effect of concomitant antiepileptic therapy on levetiracetam (LEV) pharmacokinetics. METHODS: A 6-year retrospective observational study. Patients were grouped according to the antiepileptic drug (AED) used as concomitant medication: Group A, LEV in monotherapy; Group B, LEV + enzyme-inducing antiepileptic drugs (EIAEDs) and Group C, LEV + non-enzyme-inducing antiepileptic drugs (NEIAEDs). Apparent oral LEV clearance (LEV CL/F) and basal serum LEV concentrations (LEV C0) were compared among the different groups by analysis of variance (ANOVA)...
November 23, 2017: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/29208209/imepitoin-withdrawal-in-dogs-with-idiopathic-epilepsy-well-controlled-with-imepitoin-and-phenobarbital-and-or-potassium-bromide-does-not-increase-seizure-frequency
#16
K Stee, V Martlé, B J G Broeckx, E Royaux, L Van Ham, S F M Bhatti
Phenobarbital or potassium bromide (KBr) add-on treatment decreases the average monthly seizure frequency in dogs with idiopathic epilepsy resistant to a maximum dose of imepitoin. The importance of continued administration of imepitoin in these dogs is currently unknown. The goal of this study was to assess whether imepitoin withdrawal would destabilize epileptic seizure control. In this prospective clinical trial epileptic seizure control was evaluated by comparing the monthly seizure frequency of 13 dogs with well-controlled idiopathic epilepsy receiving a combination of imepitoin and phenobarbital (n=4), imepitoin and KBr (n=7), and imepitoin, phenobarbital and KBr (n=2) during a period of 3-6 months (pre-withdrawal period), with a follow-up period of 9-12 months after withdrawal of imepitoin (post-withdrawal period)...
December 2017: Veterinary Journal
https://www.readbyqxmd.com/read/29207733/the-association-between-prolonged-jaundice-and-tata-box-dinucleotide-repeats-in-gilbert-s-syndrome
#17
Yadollah Zahed Pasha, Mousa Ahmadpor Kacho, Haleh Akhavan Niaki, Mehdi Tarighati, Ehsan Alaee
Introduction: Jaundice is a common condition during the neonatal period. Prolonged jaundice occurs in a large number of breastfed infants, considering the impact of genetic factors on the incidence of jaundice. Aim: To determine the association between prolonged jaundice and TATA box dinucleotide repeats in Gilbert's Syndrome (GS). Materials and Methods: In this case-control study, the case group consisted of 51 neonates with jaundice, aged more than two weeks with indirect bilirubin level higher than 10 mg/dl...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29204817/oxyphenbutazone-promotes-cytotoxicity-in-rats-and-hep3b-cellsvia-suppression-of-pge2-and-deactivation-of-wnt-%C3%AE-catenin-signaling-pathway
#18
Shakir Saleem, Ruqaiyah Khan, Muhammad Afzal, Imran Kazmi
Hepatocellular carcinoma (HCC) is the fifth leading cause of death and is generally typified by elevated liver enzyme biomarkers, antioxidants, and chronic inflammation of hepatocytes. Although currently available drugs have shown remarkable alleviation of the cancerous condition, but at the same time they present a more severe challenge of toxic effects due to chemotherapy. Therefore, in order to bring more patient-compliant therapy, we aimed to refurbish the use of a COX inhibitor, oxyphenbutazone (OPB), with low dose of methotrexate (MTX) to treat diethyl nitrosamine (DENA)-induced HCC in Wistar rats and in Hep3B cells...
December 4, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29191768/interactions-of-aliskiren-a-direct-renin-inhibitor-with-antiepileptic-drugs-in-the-test-of-maximal-electroshock-in-mice
#19
Krzysztof Łukawski, Grzegorz Raszewski, Stanisław J Czuczwar
Experimental studies showed that certain angiotensin-converting enzyme inhibitors and angiotensin AT1 receptor antagonists can decrease seizure severity in rodents. Additionally, some of these blockers of the renin-angiotensin system have been documented to enhance the anticonvulsant activity of antiepileptic drugs against maximal electroshock-induced seizures. The aim of the current study was to investigate the effect of aliskiren, a direct renin inhibitor and a novel antihypertensive drug, on the protective action of numerous antiepileptic drugs (carbamazepine, valproate, clonazepam, phenobarbital, oxcarbazepine, lamotrigine, topiramate and pregabalin) in the test of maximal electroshock in mice...
November 27, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29191760/thermodynamic-estimate-of-the-number-of-solvent-molecules-displaced-by-a-solute-molecule-for-enthalpy-driven-adsorption-phenobarbital-and-activated-carbons-as-the-model-system
#20
Peng Yu, Dale Eric Wurster
A Modified Crisp Equation, describing the differential Gibbs free energy of the adsorption process, is being proposed, which considers multiple sites available on the surface for adsorption and their relative fractions. The differential Gibbs free energy can be calculated by the van't Hoff Equation, which depends on the affinity constant in the Langmuir-Like Equation. To consider the number of solvent molecules displaced by a solute molecule in the adsorption process, a new derivative of the Langmuir-Like Equation is being proposed as well...
November 27, 2017: Journal of Pharmaceutical Sciences
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