keyword
MENU ▼
Read by QxMD icon Read
search

phenobarbital

keyword
https://www.readbyqxmd.com/read/28916194/induction-of-cytochrome-p450-mrna-in-porcine-primary-hepatocytes-cultured-under-serum-free-conditions-comparison-of-freshly-isolated-cells-and-cryopreserved
#1
Martin Krøyer Rasmussen
Primary hepatocytes are widely used in the study of dynamic events like regulation of gene expression, as they are superior to most cell-lines. However, the culturing of the hepatocytes often results in loss of phenotype, e.g. the expression of the cytochrome p450s (CYP). The present study investigated the impact of serum in the culture medium of porcine primary hepatocytes (PPH) on markers of dedifferentiation as well as the impact on CYP induction. The effects were studied in both freshly isolated primary hepatocytes as well as cryopreserved...
September 12, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28915576/hepatic-b-cell-leukemia-3-suppresses-chemically-induced-hepatocarcinogenesis-in-mice-through-altered-mapk-and-nf-%C3%AE%C2%BAb-activation
#2
Nadine Gehrke, Marcus A Wörns, Amrit Mann, Yvonne Huber, Nadine Hoevelmeyer, Thomas Longerich, Ari Waisman, Peter R Galle, Jörn M Schattenberg
The transcriptional nuclear factor kappa B (NF-κB)-coactivator B cell leukemia-3 (Bcl-3) is a molecular regulator of cell death and proliferation. Bcl-3 has been shown to be widely expressed in different cancer types including hepatocellular carcinoma (HCC). Its influence on hepatocarcinogenesis is still undetermined. To examine the role of Bcl-3 in hepatocarcinogenesis mice with hepatocyte-specific overexpression of Bcl-3 (Bcl-3(Hep)) were exposed to diethylnitrosamine (DEN) and phenobarbital (PB). Hepatic Bcl-3 overexpression attenuated DEN/PB-induced hepatocarcinogenesis...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28873066/preliminary-study-of-the-association-between-the-elimination-parameters-of-phenytoin-and-phenobarbital
#3
Janthima Methaneethorn, Duangchit Panomvana, Thaveechai Vachirayonstien
BACKGROUND: Therapeutic drug monitoring is essential for both phenytoin and phenobarbital therapy given their narrow therapeutic indexes. Nevertheless, the measurement of either phenytoin or phenobarbital concentrations might not be available in some rural hospitals. Information assisting individualized phenytoin and phenobarbital combination therapy is important. This study's objective was to determine the relationship between the maximum rate of metabolism of phenytoin (Vmax) and phenobarbital clearance (CLPB), which can serve as a guide to individualized drug therapy...
September 5, 2017: Drug Metabolism and Personalized Therapy
https://www.readbyqxmd.com/read/28867738/characterization-of-%C3%AE-estradiol-3-glucuronidation-in-rat-brain
#4
Yuki Asai, Yukiko Sakakibara, Haruka Onouchi, Masayuki Nadai, Miki Katoh
β-Estradiol is conjugated by uridine 5'-diphosphate-glucuronosyltransferase (UGT) 1A to 3-glucuronide in the human liver. UGT1A has been found in the brain; therefore, UGT1A may be involved in β-estradiol 3-glucuronidation in the brain. In the present study, we aimed to characterize the β-estradiol 3-glucuronidation reaction in the rat brain. β-Estradiol 3-glucuronidation was detected in eight rat brain regions (cerebellum, frontal cortex, parietal cortex, piriform cortex, hippocampus, medulla oblongata, striatum, and thalamus)...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28867038/-therapeutic-management-of-neonatal-arterial-cerebral-infarction-and-neuroprotection-perspectives
#5
O Baud, S Auvin, E Saliba, V Biran
Neonatal seizure related to stroke is a common diagnostic feature. Their treatment, although widely debated even today must be initiated in case of status epilepticus, clinical seizures of more than 5 minutes duration or short (> 30 secondes) and repeated clinical seizures (2 or more per hour). The treatment of neonatal seizures is a challenge that remains only partially solved. It should take into account the etiology of seizures, type of brain lesions and clinical/electrical response to treatment after the first line treatment...
September 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28865097/suspected-phenobarbital-induced-pseudolymphoma-in-a-dog
#6
R Lampe, J Manens, N Sharp
Pseudolymphoma is a drug reaction to anti-epileptics that is well recognized in humans; it has been reported in one cat but not dogs. In this report, lymphoma-like clinical signs are suspected to be secondary to phenobarbital administration in a dog. A 2.5-year-old male, neutered Shepherd mix presented for a 3-day history of progressive ataxia, dazed mentation, pyrexia, and lethargy. While hospitalized, the dog developed generalized lymphadenopathy and sustained pyrexia. The dog was receiving levetiracetam and phenobarbital for epilepsy, and serum concentrations of both were within standard therapeutic ranges...
September 2, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28859122/effects-of-arachidonyl-2-chloroethylamide-acea-on-the-protective-action-of-various-antiepileptic-drugs-in-the-6-hz-corneal-stimulation-model-in-mice
#7
Jarogniew J Luszczki, Pawel Patrzylas, Miroslaw Zagaja, Marta Andres-Mach, Katarzyna Zaluska, Maria W Kondrat-Wrobel, Monika Szpringer, Jaroslaw Chmielewski, Magdalena Florek-Luszczki
Accumulating evidence indicates that cannabinoid CB1 receptor ligands play a pivotal role in seizures, not only in preclinical studies on animals, but also in clinical settings. This study was aimed at characterizing the influence of arachidonyl-2'-chloroethylamide (ACEA-a selective cannabinoid CB1 receptor agonist) co-administered with phenylmethylsulfonyl fluoride (PMSF) on the anticonvulsant potency of various antiepileptic drugs (clobazam, lacosamide, levetiracetam, phenobarbital, tiagabine and valproate) in the 6-Hz corneal stimulation model...
2017: PloS One
https://www.readbyqxmd.com/read/28856745/using-known-drug-interactions-to-manage-supratherapeutic-calcineurin-inhibitor-concentrations
#8
REVIEW
Nicholas W Lange, David M Salerno, Karen Berger, Demetra S Tsapepas
OBJECTIVES: To summarize the available body of evidence guiding the management of supratherapeutic concentrations of calcineurin inhibitors (CNI) using cytochrome P450 (CYP450) enzyme inducers. METHODS: A non-date restricted literature search within MEDLINE, Embase, and Scopus was performed using the terms "cyclosporine", "tacrolimus", "calcineurin inhibitor", "toxicity", "pharmacokinetics", "carbamazepine", "rifampin", "phenytoin", and "phenobarbital." Additional references were identified from a review of all included citations...
August 30, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28833346/repurposing-valproate-enteral-clonidine-and-phenobarbital-for-comfort-in-adult-icu-patients-a-literature-review-with-practical-considerations
#9
David J Gagnon, Gabriel V Fontaine, Richard R Riker, Gilles L Fraser
Provision of adequate sedation is a fundamental part of caring for critically ill patients. Propofol, dexmedetomidine, and benzodiazepines are the most commonly administered sedative medications for adult patients in the intensive care unit (ICU). These agents are limited by adverse effects, need for a monitored environment for safe administration, and lack of universal effectiveness. Recently, there has been increased interest in repurposing older pharmacologic agents for patient comfort in the intensive care unit...
August 22, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28821485/simple-evaluation-method-for-cyp3a4-induction-from-human-hepatocytes-the-relative-factor-approach-with-an-induction-detection-limit-concentration-based-on-the-emax-model
#10
Shino Kuramoto, Motohiro Kato, Hidetoshi Shindoh, Akihisa Kaneko, Masaki Ishigai, Seiji Miyauchi
We investigated the robustness and utility of the relative factor (RF) approach based on the Emax model, which was reported by Kaneko, using mRNA induction data of 10 typical CYP3A4 inducers in cryopreserved human hepatocytes. The RF value is designated as the ratio of the induction detection limit concentration (IDLC) for a standard inducer, such as rifampicin (RIF) or phenobarbital (PB), to that for the compound (RFRIF is IDLCRIF/IDLCcpd; RFPB is IDLCPB/IDLCcpd). An important feature of the RF approach is that the profiles of the induction response curves on the logarithmic scale remain unchanged irrespective of inducers but are shifted parallel depending on the EC50 values...
August 18, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28815754/pharmacokinetic-interactions-and-dosing-rationale-for-antiepileptic-drugs-in-adults-and-children
#11
S C van Dijkman, W M Rauwé, M Danhof, O Della Pasqua
AIM: Population pharmacokinetic modelling has been widely used across many therapeutic areas to identify sources of variability, which are incorporated into models as covariate factors. Despite numerous publications on pharmacokinetic (PK) drug-drug interactions (DDIs) between antiepileptic drugs (AEDs), such data are not used to support the dose rationale for polytherapy in the treatment of epileptic seizures. Here we assess the impact of DDIs on plasma concentrations and evaluate the need for AED dose adjustment...
August 16, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28811085/the-use-of-phenobarbital-and-other-anti-seizure-drugs-in-newborns
#12
REVIEW
Mohamed El-Dib, Janet S Soul
Neonatal seizures constitute the most frequent presenting neurologic sign encountered in the neonatal intensive care unit. Despite limited efficacy and safety data, phenobarbital continues to be used near-universally as the first-line anti-seizure drug (ASD) in neonates. The choice of second-line ASDs varies by provider and institution, and is still not supported by sufficient scientific evidence. In this review, we discuss the available evidence supporting the efficacy, mechanism of action, potential adverse effects, key pharmacokinetic characteristics such as interaction with therapeutic hypothermia, logistical issues, and rationale for use of neonatal ASDs...
October 2017: Seminars in Fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28807611/initial-treatment-for-nonsyndromic-early-life-epilepsy-an-unexpected-consensus
#13
Renée A Shellhaas, Anne T Berg, Zachary M Grinspan, Courtney J Wusthoff, John J Millichap, Tobias Loddenkemper, Jason Coryell, Russell P Saneto, Catherine J Chu, Sucheta M Joshi, Joseph E Sullivan, Kelly G Knupp, Eric H Kossoff, Cynthia Keator, Elaine C Wirrell, John R Mytinger, Ignacio Valencia, Shavonne Massey, William D Gaillard
OBJECTIVE: There are no evidence-based guidelines on the preferred approach to treating early-life epilepsy. We examined initial therapy selection in a contemporary US cohort of children with newly diagnosed, nonsyndromic, early-life epilepsy (onset before age three years). METHODS: Seventeen pediatric epilepsy centers participated in a prospective cohort study of children with newly diagnosed epilepsy with onset under 36 months of age. Details regarding demographics, seizure types, and initial medication selections were obtained from medical records...
June 27, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28799509/update-on-pharmacological-treatment-of-progressive-myoclonus-epilepsies
#14
Edoardo Ferlazzo, Dorothee Kasteleijn-Nolst Trenite, Gerrit-Jan de Haan, Felix Felix Nitschke, Saija Ahonen, Sara Gasparini, Berge A Minassian
BACKGROUND: Progressive myoclonus epilepsies (PMEs) are a group of rare inherited diseases featuring a combination of myoclonus, seizures and variable degree of cognitive impairment. Despite extensive investigations, a large number of PMEs remain undiagnosed. In this review, we focus on the current pharmacological approach to PMEs. METHODS: References were mainly identified through PubMed search until February 2017 and backtracking of references in pertinent studies...
August 9, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28776218/molecular-pathology-of-cerebral-tnf-%C3%AE-il-1%C3%AE-inos-and-nrf2-in-forensic-autopsy-cases-with-special-regard-to-deaths-due-to-environmental-hazards-and-intoxication
#15
Si-Hao Du, Xiao-Hui Tan, Rui Zhao, Dong Zhao, Ye Xue, Hui-Jun Wang, Xiao-Li Xie, Qi Wang
Deaths involved with environmental hazards and intoxication might present with minimal or nonspecific morphological features, which are insufficient to establish a diagnosis. The present study investigated the postmortem brain mRNA and immunohistochemical expressions of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), inducible nitric oxide synthase (iNOS) and nuclear factor erythroid-2-related factor-2 (Nrf2) in forensic cases. Relative mRNA quantification using Taqman real-time PCR assay demonstrated higher expression of IL-1β, TNF-α and iNOS, and lower expression of Nrf2 in methamphetamine intoxication and hyperthermia cases, higher expression of iNOS in phenobarbital intoxication cases, and higher expression of Nrf2 in phenobarbital intoxication and hypothermia cases...
August 3, 2017: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/28770451/pharmacotherapy-for-seizures-in-neonates-with-hypoxic-ischemic-encephalopathy
#16
REVIEW
Elissa Yozawitz, Arthur Stacey, Ronit M Pressler
Seizures are common in neonates with moderate and severe hypoxic ischemic encephalopathy (HIE) and are associated with worse outcomes, independent of HIE severity. In contrast to adults and older children, no new drugs have been licensed for treatment of neonatal seizures over the last 50 years, because of a lack of controlled clinical trials. Hence, many antiseizure medications licensed in older children and adults are used off-label for neonatal seizure, which is associated with potential risks of adverse effects during a period when the brain is particularly vulnerable...
August 2, 2017: Paediatric Drugs
https://www.readbyqxmd.com/read/28748902/acute-renal-failure-secondary-to-drug-related-crystalluria-and-or-drug-reaction-with-eosinophilia-and-systemic-symptom-syndrome-in-a-patient-with-metastatic-lung-cancer
#17
Saime Paydas, Mustafa Balal, Firat Kocabas, Nurettin Ay
Drug reaction with eosinophilia and systemic symptoms (DRESS) or drug-induced hypersensitivity is a severe adverse drug-induced reaction. Aromatic anticonvulsants, such as phenytoin, phenobarbital, and carbamazepine, and some drugs, can induce DRESS. Atypical crystalluria can be seen in patients treated with amoxycillin or some drugs and can cause acute renal failure. We describe a 66-year-old man who presented fever and rash and acute renal failure three days after starting amoxycillin. He was also using phenytoin because of cerebral metastatic lung cancer...
July 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28745845/sedative-hypnotic-drug-withdrawal-syndrome-recognition-and-treatment-digest
#18
Cynthia Santos, Ruben E Olmedo, Jeremy Kim
Sedative-hypnotic drugs include gamma-Aminobutyric acid (GABA)ergic agents such as benzodiazepines, barbiturates, gamma-Hydroxybutyric acid [GHB], gamma-Butyrolactone [GBL], baclofen, and ethanol. Chronic use of these substances can cause tolerance, and abrupt cessation or a reduction in the quantity of the drug can precipitate a life-threatening withdrawal syndrome. Benzodiazepines, phenobarbital, propofol, and other GABA agonists or analogues can effectively control symptoms of withdrawal from GABAergic agents...
March 22, 2017: Emergency Medicine Practice
https://www.readbyqxmd.com/read/28745680/-the-decreased-level-of-plasma-carnitine-in-patients-with-epilepsy
#19
E D Belousova
Antiepileptic drugs (AEDs) have long been known to affect carnitine metabolism, dropping the plasma free carnitine. Valproate (VPA) was considered to be the strongest carnitine-reducing agent. VPA-induced hyperammonemic encephalopathy and hepatotoxicity are well known, and pre-existing carnitine deficiency can be a predisposing factor, especially in congenital metabolic disorders. Several studies have shown that carnitine supplementation in patients receiving VPA to result in subjective and objective improvements and to prevent VPA-induced hepatotoxicity and encephalopathy, in parallel with increases in carnitine serum concentrations...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28744867/antiepileptic-drug-discontinuation-by-people-with-epilepsy-in-the-general-population
#20
Giorgia Giussani, Elisa Bianchi, Valentina Canelli, Giuseppe Erba, Carlotta Franchi, Alessandro Nobili, Josemir W Sander, Ettore Beghi
OBJECTIVE: Rate, reasons, and predictors of antiepileptic drug (AED) discontinuation were investigated in a well-defined cohort of people with epilepsy to verify efficacy and tolerability of treatment up to 20 years from treatment initiation. METHODS: The history of AED usage in children and adults with epilepsy registered with 123 family physicians in an area of Northern Italy between 2000 and 2008 was recorded. Cumulative probabilities of AED withdrawal for specific reasons were estimated using cumulative incidence functions...
September 2017: Epilepsia
keyword
keyword
13416
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"