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https://www.readbyqxmd.com/read/28062844/phenobarbital-administration-every-eight-hours-improvement-of-seizure-management-in-idiopathic-epileptic-dogs-with-decreased-phenobarbital-elimination-half-life
#1
F Stabile, C R Barnett, L De Risio
Estimated prevalence of canine idiopathic epilepsy is 0.6 per cent in the first-opinion canine population in the UK. Phenobarbital monotherapy has been reported to reduce/eradicate seizure activity in 60-93 per cent of idiopathic epileptic dogs (IEDs). The objective of this study was to evaluate safety and efficacy of the administration of phenobarbital orally every eight hours in IEDs with phenobarbital elimination half-life less than 20 hours. Medical records of 10 IEDs in which steady state trough serum phenobarbital levels were within the reference range and phenobarbital elimination half-life had become less than 20 hours following prolonged administration every 12 hours were reviewed...
January 6, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28062542/phenobarbital-treatment-at-a-neonatal-age-results-in-decreased-efficacy-of-omeprazole-in-adult-mice
#2
Yun-Chen Tien, Stephanie C Piekos, Chad Pope, Xiao-Bo Zhong
Drug-drug interactions (DDIs) occur when the action of one drug interferes with or alters the activity of another drug taken concomitantly. This can lead to decreased drug efficacy or increased toxicity. Because of DDIs, physicians in the clinical practice attempt to avoid potential interactions when multiple drugs are co-administrated, however there is still a large knowledge gap in understanding how drugs taken in the past can contribute to DDIs in the future. The goal of this study is to investigate the consequence of neonatal drug exposure on efficacy of other drugs administered to adult life...
January 6, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28062541/evaluation-of-a-novel-renewable-hepatic-cell-model-for-prediction-of-clinical-cyp3a4-induction-using-a-correlation-based-ris-approach
#3
Rongjun Zuo, Feng Li, Sweta Parikh, Li Cao, Kirsten L Cooper, Yulong Hong, Jin Liu, Ronald A Faris, Daochuan Li, Hongbing Wang
Metabolism enzyme induction-mediated drug-drug interactions need to be carefully characterized in vitro for drug candidates in order to predict in vivo outcomes of safety risk and therapeutic efficiency. Currently, both the FDA and EMA recommend using primary human hepatocytes as the "Gold Standard" in vitro test system for studying the induction potential of candidate drugs on cytochrome P450 (CYP), CYP3A4, CYP1A2, and CYP2B6. However, primary human hepatocytes are known to bear inherent limitations such as limited supply and large lot-to-lot variations which result in an experimental burden to qualify new lots...
January 6, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28058446/hepatotoxic-effects-of-cyproconazole-and-prochloraz-in-wild-type-and-hcar-hpxr-mice
#4
Philip Marx-Stoelting, Katrin Ganzenberg, Constanze Knebel, Flavia Schmidt, Svenja Rieke, Helen Hammer, Felix Schmidt, Oliver Pötz, Michael Schwarz, Albert Braeuning
The agricultural fungicides cyproconazole and prochloraz exhibit hepatotoxicity in rodent studies and are tumorigenic following chronic exposure. Both substances are suspected to act via a CAR (constitutive androstane receptor)/PXR (pregnane-X-receptor)-dependent mechanism. Human relevance of these findings is under debate. A 28-day toxicity study was conducted in mice with humanized CAR and PXR (hCAR/hPXR) with two dose levels (50 or 500 ppm) of both substances, using the model CAR activator phenobarbital as a reference...
January 6, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/28042096/different-response-to-antiepileptic-drugs-according-to-the-type-of-epileptic-events-in-a-neonatal-ischemia-reperfusion-model
#5
Luc Morin, Julie Enderlin, Pierre-Louis Leger, Gaëtan Perrotte, Philippe Bonnin, Nina Dupuis, Olivier Baud, Christiane Charriaut-Marlangue, Stéphane Auvin
Perinatal arterial stroke is the most frequent form of cerebral infarction in children. Neonatal seizures are the most frequent symptom during the neonatal period. The current management of perinatal stroke is based on supportive care. It is currently unknown if treatment of the seizures modifies the outcome, and no clinical studies have focused on seizures during neonatal stroke. We studied the effect of phenobarbital and levetiracetam on an ischemic-reperfusion stroke model in P7 rats using prolonged electroencephalographic recordings and a histologic analysis of the brain (24h after injury)...
December 30, 2016: Neurobiology of Disease
https://www.readbyqxmd.com/read/28018155/neonatal-toxicity-from-escitalopram-use-in-utero-a-case-report
#6
Jessica Degiacomo, Sherry Luedtke
Selective serotonin reuptake inhibitor (SSRI) exposure during pregnancy can result in symptoms of serotonin syndrome or serotonin withdrawal. In contrast to other SSRIs, reports of serotonin behavioral syndrome following in utero exposure to escitalopram and citalopram are limited. We describe a case of suspected toxicity following in utero exposure to 20 mg escitalopram throughout pregnancy. The infant was transferred to our neonatal intensive unit at 9 hours of life for further evaluation of lethargy, weak cry, bradycardia, and non-reactive pupils...
November 2016: Journal of Pediatric Pharmacology and Therapeutics: JPPT: the Official Journal of PPAG
https://www.readbyqxmd.com/read/28017579/seizures-caused-by-brain-tumors-in-children
#7
Iván Sánchez Fernández, Tobias Loddenkemper
PURPOSE: To review the epidemiology, clinical features, and treatment of seizures secondary to pediatric brain tumors. METHOD: Literature review. RESULTS: Pediatric brain tumors are the most common solid pediatric tumor and the most common cause of death in pediatric cancer. Seizures are one of the most common symptoms of pediatric brain tumors. Factors associated with increased risk of seizures include supratentorial location, gray matter involvement, low-grade, and certain histological features-especially dysembryoplastic neuroepithelial tumor, ganglioglioma, and oligodendroglioma...
December 7, 2016: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28011082/-neonatal-arterial-ischemic-stroke-review-of-the-current-guidelines
#8
E Saliba, T Debillon, S Auvin, O Baud, V Biran, J-L Chabernaud, S Chabrier, F Cneude, A-G Cordier, V Darmency-Stamboul, J-F Diependaele, T Debillon, M Dinomais, C Durand, A Ego, G Favrais, Y Gruel, L Hertz-Pannier, B Husson, S Marret, S N'Guyen The Tich, T Perez, E Saliba, J-B Valentin, C Vuillerot
Neonatal arterial ischemic stroke (NAIS) is a rare event that occurs in approximately one in 5000 term or close-to-term infants. Most affected infants will present with seizures. Although a well-recognized clinical entity, many questions remain regarding diagnosis, risk factors, treatment, and follow-up modalities. In the absence of a known pathophysiological mechanism and lack of evidence-based guidelines, only supportive care is currently provided. To address these issues, a French national committee set up by the French Neonatal Society (Société française de néonatologie) and the national referral center (Centre national de référence) for arterial ischemic stroke in children drew up guidelines based on an HAS (Haute Autorité de santé [HAS]; French national authority for health) methodology...
December 20, 2016: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28003925/fetal-valproate-syndrome-with-limb-defects-an-indian-case-report
#9
Manisha Goyal, Ashok Gupta, Manish Sharma, Priyanshu Mathur, Naresh Bansal
Epilepsy is a common disorder and exposure to antiepileptic drugs during pregnancy increases the risk of teratogenicity. Older AEDs such as valproate and phenobarbital are associated with a higher risk of major malformations in the fetus than newer AEDs like lamotrigine and levetiracetam. Exposure to valproic acid during first trimester can result in fetal valproate syndrome (FVS), comprising typical facial features, developmental delay, and a variety of malformations such as neural tube defects, cardiac and genitourinary malformations, and limb defects...
2016: Case Reports in Pediatrics
https://www.readbyqxmd.com/read/27995128/intravenous-topiramate-pharmacokinetics-in-dogs-with-naturally-occurring-epilepsy
#10
Irene Vuu, Lisa D Coles, Patricia Maglalang, Ilo E Leppik, Greg Worrell, Daniel Crepeau, Usha Mishra, James C Cloyd, Edward E Patterson
RATIONALE: Barriers to developing treatments for human status epilepticus include the inadequacy of experimental animal models. In contrast, naturally occurring canine epilepsy is similar to the human condition and can serve as a platform to translate research from rodents to humans. The objectives of this study were to characterize the pharmacokinetics of an intravenous (IV) dose of topiramate (TPM) in dogs with epilepsy and evaluate its effect on intracranial electroencephalographic (iEEG) features...
2016: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/27979642/severe-carisoprodol-withdrawal-after-a-14-year-addiction-and-acute-overdose
#11
Kathy T Vo, Howard Horng, Craig G Smollin, Neal L Benowitz
BACKGROUND: Carisoprodol, a centrally acting muscle relaxant with a high abuse potential, has barbiturate-like properties at the GABA-A receptor, leading to central nervous system depression and desired effects. Its tolerance and dependence has been previously demonstrated in an animal model, and withdrawal has been described in several recent case reports. Many cases can be effectively managed with a short course of benzodiazepines or antipsychotic agents. However, abrupt cessation in a patient with a history of long-term and high-dose carisoprodol abuse may result in symptoms that are more difficult for providers to treat...
December 12, 2016: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27977017/effect-of-genetic-variants-of-bilirubin-metabolism-on-the-degree-of-hyperbilirubinemia-in-african-american-newborns
#12
D L Schutzman, L M Baudhuin, E Gatien, S Ajayi, R J Wong
OBJECTIVE: The objective of our study was to measure the effect of genetic variants of these two enzymes, UGT1A1 and SLCO1B1, in the bilirubin metabolic pathway on the degree of hyperbilirubinemia in a cohort of African-American (AA) infants from our well-baby nursery. In addition, a second objective was to document the types and frequencies of genetic variations of these enzymes in our cohort. STUDY DESIGN: A prospective study of 180 AA infants from the Well Baby Nursery of an inner city community hospital, all of whose mothers were type O pos...
December 15, 2016: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/27943244/genetic-variations-in-bilirubin-metabolism-genes-and-their-association-with-unconjugated-hyperbilirubinemia-in-adults
#13
Ashish S Chiddarwar, Selma Z D'Silva, Roshan B Colah, Kanjaksha Ghosh, Malay B Mukherjee
OBJECTIVE: The present study was undertaken to investigate the genotype and allele frequencies of the variants in the four bilirubin metabolism genes (UGT1A1, OATP2, HMOX1, and BLVRA) and their association with hyperbilirubinemia. MATERIAL AND METHODS: Genotyping of 17 genetic variants was performed in 115 adults with hyperbilirubinemia and 150 controls by PCR-RFLP, GeneScan analysis, and direct DNA sequencing. RESULTS: Genetic polymorphisms of the UGT1A1 promoter, specifically the T-3279G phenobarbital-responsive enhancer module and (TA)7 dinucleotide repeat, as well as the intron and coding region variants of the OATP2, HMOX1, and BLVRA genes, were significantly higher among the cases than the controls...
December 12, 2016: Annals of Human Genetics
https://www.readbyqxmd.com/read/27941476/effect-of-cyp-inducers-inhibitors-on-topiramate-concentration-clinical-value-of-therapeutic-drug-monitoring
#14
Yoshiaki Yamamoto, Yukitoshi Takahashi, Katsumi Imai, Yoshiyuki Kagawa, Yushi Inoue
BACKGROUND: This study investigated the pharmacokinetic interactions between topiramate and concomitant antiepileptic drugs and evaluated the therapeutic concentration range of topiramate and the effect of the achieved plasma concentration on the retention rate of topiramate therapy. METHODS: A total of 1,217 plasma samples obtained from 610 patients were retrospectively investigated, and the concentration-to-dose ratio (CD ratio) of topiramate was compared among patients on various antiepileptic drug regimens...
December 7, 2016: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/27935798/health-gains-and-financial-protection-provided-by-the-ethiopian-mental-health-strategy-an-extended-cost-effectiveness-analysis
#15
Kjell Arne Johansson, Kirsten Bjerkreim Strand, Abebaw Fekadu, Dan Chisholm
BACKGROUND: Mental and neurological (MN) health care has long been neglected in low-income settings. This paper estimates health and non-health impacts of fully publicly financed care for selected key interventions in the National Mental Health Strategy in Ethiopia for depression, bipolar disorder, schizophrenia and epilepsy. METHODS: A methodology of extended cost-effectiveness analysis (ECEA) is applied to MN health care in Ethiopia. The impact of providing a package of selected MN interventions free of charge in Ethiopia is estimated for: epilepsy (75% coverage, phenobarbital), depression (30% coverage, fluoxetine, cognitive therapy and proactive case management), bipolar affective disorder (50% coverage, valproate and psychosocial therapy) and schizophrenia (75% coverage, haloperidol plus psychosocial treatment)...
October 9, 2016: Health Policy and Planning
https://www.readbyqxmd.com/read/27914986/identification-of-epigenetically-downregulated-tmem70-and-ube2e2-in-rat-liver-after-28-day-treatment-with-hepatocarcinogenic-thioacetamide-showing-gene-product-downregulation-in-hepatocellular-preneoplastic-and-neoplastic-lesions-produced-by-tumor-promotion
#16
Sayaka Mizukami, Atsunori Yafune, Yousuke Watanabe, Kota Nakajima, Meilan Jin, Toshinori Yoshida, Makoto Shibutani
The present study identified genes showing promoter region hypermethylation by CpG island microarrays in the liver of rats treated with hepatocarcinogen thioacetamide (TAA) for 28days. Among 47 hypermethylated genes, Hist1h2aa, Tmem70, Ube2e2, and Slk were confirmed to show hypermethylation by methylation-specific quantitative polymerase chain reaction (PCR) and pyrosequencing analyses as well as downregulation of transcript levels by real-time reverse transcription-PCR analysis in the livers of rats treated with TAA...
January 15, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/27911381/a-novel-approach-for-the-administration-of-medications-and-fluids-in-emergency-scenarios-and-settings
#17
Akilesh Honasoge, Neal Lyons, Kathleen Hesse, Braden Parker, Robert Mokszycki, Kelly Wesselhoff, Rolla Sweis, Erik B Kulstad
The available routes of administration commonly used for medications and fluids in the acute care setting are generally limited to oral, intravenous, or intraosseous routes, but in many patients, particularly in the emergency or critical care settings, these routes are often unavailable or time-consuming to access. A novel device is now available that offers an easy route for administration of medications or fluids via rectal mucosal absorption (also referred to as proctoclysis in the case of fluid administration and subsequent absorption)...
November 9, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27890824/evaluating-a-switch-from-meconium-to-umbilical-cord-tissue-for-newborn-drug-testing-a-retrospective-study-at-an-academic-medical-center
#18
Kendra L Palmer, Kelly E Wood, Matthew D Krasowski
BACKGROUND: The objective of this study was to compare detection rates of newborn drug exposure at an academic medical center transitioning from meconium to umbilical cord tissue toxicology testing. METHODS: We performed an Institutional Review Board-approved retrospective chart review on all newborns (n=2072) for whom newborn drug testing was ordered at our academic medical center between June 2012 and August 2015 (in August 2013, umbilical cord tissue became the preferred specimen)...
November 24, 2016: Clinical Biochemistry
https://www.readbyqxmd.com/read/27890484/25-years-of-advances-in-definition-classification-and-treatment-of-status-epilepticus
#19
Eugen Trinka, Reetta Kälviäinen
PURPOSE: Status epilepticus (SE) requires not only urgent symptomatic treatment with antiepileptic drugs but also rapid identification and treatment of its cause. This narrative review summarizes the most important advances in classification and treatment of SE. METHOD: Data sources included MEDLINE, EMBASE, ClinicalTrials.gov, and back tracking of references in pertinent studies, reviews, and books. RESULTS: SE is now defined as "a condition resulting either from the failure of the mechanisms responsible for seizure termination or from the initiation of mechanisms, which lead to abnormally, prolonged seizures (after time point t1)...
November 14, 2016: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/27889497/in%C3%A2-vivo-effect-of-borneol-on-rat-hepatic-cyp2b-expression-and-activity
#20
Jing-Ya Chen, Xiang-Tao Huang, Jun-Jun Wang, Yong Chen
CYP2B subfamily accounts for 2-10% of total hepatic CYP450 enzymes and participate in the metabolism of around 8% of clinical drugs. Borneol has been widely used in traditional Chinese medicine for thousands of years. There are many studies about borneol-induced promoting penetration role for a number of drugs through various physiologic barriers, whereas there is no report involved the effect of borneol on hepatic CYP2B. The present work studied the in vivo effect of borneol on the expression and activity of rat hepatic CYP2B...
January 5, 2017: Chemico-biological Interactions
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