topiramate and ezogabine

The aim of this review was to evaluate current literature for dosing recommendations for the use of antiepileptic medications in patients receiving renal replacement therapy (RRT).. With the assistance of an experienced medical librarian specialized in pharmacy and toxicology, we searched MEDLINE, EMBASE, CINAHL, Web of Science, WorldCat, and Scopus through May 2016.. Four hundred three articles were screened for inclusion, of which 130 were identified as potentially relevant. Micromedex® DRUGDEX as well as package inserts were used to obtain known pharmacokinetic properties and dosage adjustment recommendations in RRT if known.. Data regarding antiepileptic drug use in RRT are limited and mostly consist of case reports limiting our proposed dosing recommendations. Known pharmacokinetic parameters should guide dosing, and recommendations are provided where possible.. Additional studies are necessary before specific dosing recommendations can be made for most antiepileptic drugs in critically ill patients receiving RRT, specifically with newer agents.

Topics: Acetamides; Acute Kidney Injury; Amines; Anticonvulsants; Carbamates; Critical Illness; Cyclohexanecarboxylic Acids; Dibenzazepines; Dose-Response Relationship, Drug; Ethosuximide; Felbamate; Fructose; Gabapentin; gamma-Aminobutyric Acid; Humans; Isoxazoles; Lacosamide; Lamotrigine; Levetiracetam; Phenobarbital; Phenylcarbamates; Phenylenediamines; Phenytoin; Piracetam; Propylene Glycols; Renal Dialysis; Renal Replacement Therapy; Seizures; Topiramate; Triazines; Valproic Acid; Zonisamide

We previously reported that P-retigabine (P-RTG), a retigabine (RTG) analogue bearing a propargyl group at the nitrogen atom in the linker of RTG, displayed moderate anticonvulsant efficacy. Recently, our further efforts led to the discovery of

Topics: Animals; Anticonvulsants; Carbamates; Disease Models, Animal; Dogs; Drug Design; Drug Evaluation, Preclinical; Drug Stability; Electroshock; Half-Life; Humans; KCNQ Potassium Channels; Mice; Phenylenediamines; Protein Isoforms; Rats; Rats, Sprague-Dawley; Seizures; Structure-Activity Relationship

Topics: Carbamates; Drug Combinations; Drug Stability; Formaldehyde; Fructose; Hydrogen-Ion Concentration; Levetiracetam; Limit of Detection; Linear Models; Pentanones; Phenylenediamines; Piracetam; Reproducibility of Results; Spectrometry, Fluorescence; Tablets; Topiramate

We used the method of rapid hippocampal kindling to assess the potential antiepileptogenic efficacy of a number of anticonvulsant medications. This method afforded a higher throughput than methods based on traditional kindling or post-status epilepticus models of epileptogenesis. This "compressed epileptogenesis" model also permitted the study of age-dependent pharmacologic targets, and distinguished among antiepileptic drugs (AEDs) on the basis of their age-specific antiepileptogenic efficacy. We found retigabine to be the most effective anticonvulsant therapy during early development. Topiramate seemed most effective further along development, whereas some drugs did not demonstrate an age-specific effect. The method also reproduced some of the paradoxical pharmacologic findings previously shown with lamotrigine. Although the utility of this model for screening the antiepileptogenic therapies requires further validation, it introduces the ability to undertake development-specific testing and a more rapid throughput than conventional methods.

Topics: Age Factors; Animals; Animals, Newborn; Anticonvulsants; Bumetanide; Carbamates; Disease Models, Animal; Fructose; Hippocampus; Kindling, Neurologic; Phenylenediamines; Rats; Topiramate

Seizures arising from acetylcholinesterase inhibition are a feature of organophosphate anticholinesterase intoxication. Although benzodiazepines are effective against these seizures, alternative anticonvulsant drugs may possess greater efficacy and fewer side-effects. We have investigated in the guinea-pig hippocampal slice preparation the ability of a series of anticonvulsants to suppress epileptiform bursting induced by the irreversible organophosphate anticholinesterase, soman (100 nM). Carbamazepine (300 microM), phenytoin (100 microM), topiramate (100-300 microM) and retigabine (1-30 microM) reduced the frequency of bursting but only carbamazepine and phenytoin induced a concurrent reduction in burst duration. Felbamate (100-500 microM) and clomethiazole (100-300 microM) had no effect on burst frequency but decreased burst duration. Clozapine (3-30 microM) reduced the frequency but did not influence burst duration. Levetiracetam (100-300 microM) and gabapentin (100-300 microM) were without effect. These data suggest that several compounds, in particular clomethiazole, clozapine, felbamate, topiramate and retigabine, merit further evaluation as possible treatments for organophosphate poisoning.

Topics: Amines; Animals; Anticonvulsants; Carbamates; Carbamazepine; Chlormethiazole; Clozapine; Cyclohexanecarboxylic Acids; Dose-Response Relationship, Drug; Epilepsy; Felbamate; Fructose; Gabapentin; gamma-Aminobutyric Acid; Guinea Pigs; Hippocampus; In Vitro Techniques; Levetiracetam; Male; Phenylcarbamates; Phenylenediamines; Piracetam; Propylene Glycols; Soman; Topiramate