Abstract：
UNLABELLED:Gabapentin (GBP) is a non-metabolized antiepileptic drug that is eliminated by renal excretion and displays saturable, dose dependent absorption. The recommended dosing schedule for GBP is t.i.d. At large daily doses, oral bioavailability (F) may be improved by giving the daily dose more frequently. OBJECTIVE:To evaluate whether switching GBP dosage regimen from t.i.d. to q.i.d. results in increased oral bioavailability. METHODS:This study consisted of two parts; a computer simulated pharmacokinetic model and a clinical pharmacokinetic study in nine adult epileptic patients receiving 3600 mg/day and 11 receiving 4800 mg/day. All patients were evaluated during both t.i.d. and q.i.d. regimens. F were determined by calculation of percent of dose excreted unchanged using steady-state 24-h urine collections and were compared using a paired t-test. RESULTS:At 3600 mg/day, mean F following t.i.d. and q.i.d. dosing were 38.7+/-22.1% and 40.0+/-18.9%, respectively (P=0.738). At 4800 mg/day, mean F following t.i.d. and q.i.d. dosing were 29.2+/-16.2% and 35.6+/-17.6%, respectively (P=0.006). DISCUSSION:Good agreement was observed between values from this study and predicted values based on the pharmacokinetic model. Improved GBP F at doses of 3600 mg/day was not achieved with more frequent drug administration, and thus is not warranted. At 4800 mg/day, a 22% increase in F was observed with more frequent drug dosing. CONCLUSION:GBP F may be significantly increased by q.i.d. versus t.i.d. dosing, depending upon dose level. This increase in F however must be balanced against the inconvenience of more frequent dosing. Therapeutic drug level monitoring may aid in the evaluation of such pharmacokinetic maneuvers.
journal_name
Epilepsy Resjournal_title
Epilepsy researchauthors
Gidal BE,DeCerce J,Bockbrader HN,Gonzalez J,Kruger S,Pitterle ME,Rutecki P,Ramsay REdoi
10.1016/s0920-1211(98)00020-5subject
Has Abstractpub_date
1998-07-01 00:00:00pages
91-9issue
2eissn
0920-1211issn
1872-6844pii
S0920-1211(98)00020-5journal_volume
31pub_type
临床试验,杂志文章abstract：:Much remains to be learned about mechanisms underlying entry into, and temporal progression of, status epilepticus (SE). This report describes a non-pharmacologic model of generalized convulsive SE in rat. Pulsed trains of suprathreshold electric current, were administered bilaterally to either of four rostral forebra...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(94)90084-1
更新日期：1994-09-01 00:00:00
abstract：BACKGROUND:Asymmetry of hippocampal internal architecture (HIA) clarity has been suggested to be a sign of hippocampal sclerosis (HS) and is frequently associated with other MRI findings of HS. The goal of this work is to use a previously developed HIA visual scoring system (Ver Hoef et al., 2013) to quantify HIA asymm...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2013.05.008
更新日期：2013-09-01 00:00:00
abstract：:Seletracetam (SEL), an analog of the antiepileptic drug levetiracetam (LEV), decreases seizure activity in a number of epilepsy models and binds to the synaptic vesicle protein SV2A with a higher affinity than LEV. Experiments were performed to determine if SEL, like LEV, reduces the later EPSPs in long trains of stim...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2015.08.006
更新日期：2015-11-01 00:00:00
abstract：BACKGROUND:Many new antiepileptic drugs (AEDs) have become available in recent years. Investigations of prescription patterns and exposure of AEDs to different patient groups are important regarding drug safety aspects. The aim of this study was to investigate the use of AEDs in epilepsy, with focus on exposure of AEDs...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2011.02.012
更新日期：2011-06-01 00:00:00
abstract：RATIONALE:Measurement of local cerebral blood flow (LCBF) is routinely used to locate the areas involved in the generation and spread of seizures in epileptic patients. Since the spatial distribution and extent of ictal LCBF depends on the epileptogenic network, but also on the timing of injection of tracer, we used a ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2006.01.008
更新日期：2006-05-01 00:00:00
abstract：:Brain glucose transport is dependent on glucose transporter 1 (GLUT1), encoded by the solute carrier family 2 member 1 (SLC2A1) gene. Mutations in SLC2A1 cause GLUT1 deficiency which is characterized by a broad spectrum of neurological phenotypes including generalized epilepsy, motor disorders, developmental delay and...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2017.04.007
更新日期：2017-07-01 00:00:00
abstract：:We analyzed preoperative ictal SPECT results from 18 frontal lobe epilepsy patients who underwent epilepsy surgery (mean age 22.9 years). Seizure onset at implanted subdural electrodes was defined as the epileptic focus in 16 of 18 patients. In two additional patients, the resected area on postoperative magnetic reson...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2005.09.032
更新日期：2006-02-01 00:00:00
abstract：:Food intake triggers convulsions in fasted BALB/c mice and Wistar albino rats treated with antimuscarinic drugs, scopolamine or atropine. Inbred strain studies have yielded considerable information regarding genetic influences on seizure susceptibility and factors contribute to epileptogenesis in rodents. This study, ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2015.03.001
更新日期：2015-05-01 00:00:00
abstract：:In order to assess the chloride channel gene CLCN2 as a candidate susceptibility gene for childhood absence epilepsy, parametric and non-parametric linkage analysis was performed in 65 nuclear pedigrees. This provided suggestive evidence for linkage with heterogeneity: NPL score=2.3, p<0.009; HLOD=1.5, alpha=0.44. Mut...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2007.05.004
更新日期：2007-07-01 00:00:00
abstract：OBJECTIVE:The NTRK2 gene encodes a member of the neurotrophic tyrosine kinase receptor family known as TrkB. It is a membrane-associated receptor with signaling and cellular differentiation properties that has been involved in neuropsychiatric disorders, including epilepsy. We report here the frequencies of NTRK2 allel...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2017.08.010
更新日期：2017-11-01 00:00:00
abstract：:Early neuropsychological changes following partial anterior callosotomy were evaluated in 15 patients with epilepsy (10 secondary generalized and 5 Lennox-Gastaut syndromes) by comparing their performances 1 month before surgery and then 15-20 and 90-100 days postoperatively without modifying the anticonvulsant treatm...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(90)90091-9
更新日期：1990-07-01 00:00:00
abstract：:The effect and safety of loreclezole were evaluated during a long-term follow-up trial targeting higher plasma concentrations than those of the preceding controlled trial. The result is better than in the double-blind trial, in which loreclezole doses were administered to reach plasma concentrations of 1-2 mg/l and 6/...
journal_title：Epilepsy research
pub_type： 临床试验,杂志文章
doi：10.1016/0920-1211(91)90048-k
更新日期：1991-05-01 00:00:00
abstract：:A single-dose study of the beta-carboline, ZK 95962, on photosensitive generalized paroxysmal activity in the EEG was conducted in 6 patients with primary generalized epilepsy. Four of the patients were newly diagnosed and did not receive any antiepileptic drug or other medication during the study. Two were receiving ...
journal_title：Epilepsy research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/0920-1211(90)90032-q
更新日期：1990-03-01 00:00:00
abstract：:Pregabalin (PGB) is a new antiepileptic drug (AED) which is a structural, non-functional analogue of gamma-aminobutyric acid. It acts at presynaptic calcium channels to modulate neurotransmitter release in the CNS. While the efficacy and tolerability of PGB have been demonstrated in several randomised controlled trial...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2009.08.001
更新日期：2009-12-01 00:00:00
abstract：:Nonconvulsive status epilepticus (NCSE) is difficult to diagnose but is an important cause of cognitive impairment. Electroencephalogram (EEG) monitoring is required for diagnosis and treatment. Little is known regarding the stability of subclinical epileptiform discharges (SEDs) preceding NCSE nor what strategies may...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(02)00107-9
更新日期：2002-09-01 00:00:00
abstract：:Plasma total homocysteine (p-tHcy), serum folate (s-F), serum vitamin B-12 (s-B12) and plasma pyridoxal-5'-phosphate (p-PLP) were measured in epileptic children before and after a 20-week period of sodium valproate (group A, n=32) and carbamazepine (group B, n=20) monotherapy. P-tHcy significantly increased in both gr...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2006.06.015
更新日期：2006-10-01 00:00:00
abstract：:In the brain, injury-induced gliosis and axonal sprouting have been regarded as age-dependent repairing processes with, unfortunately, epileptogenic effects. The present study examines whether brains injured at different developmental stages become more or less susceptible to experimentally-induced status epilepticus....
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(03)00029-9
更新日期：2003-03-01 00:00:00
abstract：:Overexpression of multidrug efflux transporters such as P-glycoprotein (Pgp; ABCB1) or multidrug resistance proteins (MRPs; ABCC) in the blood-brain barrier has recently been suggested to explain, at least in part, pharmacoresistance in epilepsy, which affects about 30% of all patients with this common brain disorder....
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2003.12.007
更新日期：2004-02-01 00:00:00
abstract：:Chemical kindling, as an experimental model of epileptogenesis, is induced by repetitive administration of subconvulsive amount of excitatory drugs. Kindled mice do not typically display spontaneous recurrent seizures, but are instead characterized by enhanced seizure susceptibility to convulsive stimulations. In orde...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2013.10.019
更新日期：2014-01-01 00:00:00
abstract：:Basal and high potassium-stimulated release of endogenous amino acids was measured using brain dialysis in the hippocampus of urethane-anesthetized seizure-resistant (SR) and seizure-susceptible (SS) rats. Moreover, the tissue level of amino acids was determined in the hippocampus, sensorimotor cortex, cerebellum and ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(89)90040-5
更新日期：1989-03-01 00:00:00
abstract：:Metalloproteinase 9 (MMP9) is a member of a family of enzymes that mediate the degradation of extracellular matrix proteins, and is especially involved in blood-brain barrier maintenance. Increased levels of MMP9 have been observed in many neurological disorders, including epilepsy, suggesting it may be involved in th...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2016.11.006
更新日期：2017-01-01 00:00:00
abstract：:Fifty-eight patients with drug-resistant partial epilepsy were studied preoperatively by interictal rCBF measurements using 99mTc-HMPAO and a dedicated brain SPECT camera (Tomomatic 64). Follow-up of seizure outcome, using the "Engel score", was at least 3 years. The data were analyzed in a blinded set-up, first visua...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(96)00018-6
更新日期：1996-09-01 00:00:00
abstract：:This study aimed to assess neuropsychiatric comorbidities and analyze risk factors in Chinese children with epilepsy. Children with epilepsy aged between 6 and 16 years from the Children's Hospital of Fudan University were included. Children with asthma and typically developing children were matched for age and gender...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2017.11.011
更新日期：2018-02-01 00:00:00
abstract：:There is increasing clinical and experimental evidence that hormones, in particular sex steroid hormones, influence neuronal excitability and other brain functions. The term 'neuroactive steroids' has been coined for steroids that interact with neurotransmitter receptors. One of the best characterized actions of neuro...
journal_title：Epilepsy research
pub_type： 杂志文章,评审
doi：10.1016/s0920-1211(01)00194-2
更新日期：2001-05-01 00:00:00
abstract：PURPOSE:The objectives of this study were to determine the inheritance pattern by which familial mesial temporal lobe epilepsy (FMTLE) is segregated in Mexican families, and to identify if there was an association between the clinical characteristics and the inheritance pattern. METHOD:We included a total of 25 famili...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2020.106450
更新日期：2020-11-01 00:00:00
abstract：PURPOSE:We sought to systematically review and perform a meta-analysis of the magnetic resonance spectroscopy (MRS) findings regarding juvenile myoclonic epilepsy (JME). METHODS:We searched for studies in the PubMed, Web of Science, and Embase electronic databases. Two authors collected articles and extracted data ind...
journal_title：Epilepsy research
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.eplepsyres.2016.01.004
更新日期：2016-03-01 00:00:00
abstract：:The efforts of the International League against Epilepsy (ILAE) to devise classifications of the epilepsies has greatly improved communication among epileptologists and influenced both basic and clinical research. Several classifications have been proposed since 1970; the most recent classification of epilepsy syndrom...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2005.11.014
更新日期：2006-08-01 00:00:00
abstract：:A randomised, double-blind, placebo-controlled crossover study of add-on remacemide hydrochloride was carried out in epilepsy patients being treated with phenytoin (PHT) monotherapy. Eleven patients were recruited, ten of whom completed the study. Plasma concentration profiles of PHT, remacemide, and its active desgly...
journal_title：Epilepsy research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0920-1211(96)01005-4
更新日期：1997-01-01 00:00:00
abstract：:Traumatic brain injury (TBI) is a leading cause of symptomatic epilepsy in young adults. This study examined physiological and anatomical epileptogenic consequences of a prior incident of TBI in rats. Rats were subjected to a fluid percussion brain injury one week prior to experimentation, and in vitro electrophysiolo...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(96)00044-7
更新日期：1996-12-01 00:00:00
abstract：:The objective of the study was to explore clinical, electroencephalography (EEG), neuropsychological features and prognosis of myoclonic-astatic epilepsy (MAE). Of 327 children aged between 1 and 9 years with a diagnosis of generalized epilepsy followed between 2000 and 2008, 18 (5.5%) had MAE. Male significantly pred...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2011.07.021
更新日期：2011-11-01 00:00:00
