Epilepsy and paroxysmal conditions

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Vol 5, No 3 (2013)


6-16 688
Abstract: his paper presents the results of therapeutic drug monitoring (TDM) of anticonvulsants (valproats and carbamazepins) in 614 patients with epilepsy in clinical practices. 295 patients were treated with different drugs of valproats and 314 patients were treated with different drugs of carbamazepine. The frequency of achievement the therapeutic concentrations on valproat treatment was 66,4%, the average daily dose was 1325,1 mg. The frequency of achievement the therapeutic concentrations on treatment with drug forms with prolong release (Depakin chrono, Convulex retard) was higher, than on drug forms with immediate release. The frequency of subtherapeutic concentrations on valproat treatment was 16,3% and overtherapeutic concentrations – 1%. In doses of valproats less then 500 mg there was no patients with therapeutic concentrations, in doses 1001-1500 mg/day the therapeutic concentrations have 75% patients, in doses higher than 2000 mg/day – there was a risk of overdose. The frequency of achievement the therapeutic concentrations on carbamazepine treatment was 78,6%, the average daily dose was 922,2 mg. The frequency of achievement the therapeutic concentrations on treatment with drug forms with prolong release (Tedretol CR, Finlepsin retard) was higher, than on drug forms with immediate release. The frequency of subtherapeutic concentrations on carbamazepine treatment was 6,3% and overtherapeutic concentrations – 1,25%. When used initial daily doses (less then 600 mg) 64,3% patients have therapeutic concentrations , when used highly doses (high than 600 mg) 87% patients have therapeutic concentrations. In daily doses of carbamazepine higher then 600 mg and 1200 mg the frequency of the overtherapeutic concentrations were 1,3% and 4,1% both by Cmin and Cmax, only by overtherapeutic Cmax – 8,8% and 18,4%.
24-33 739
Abstract: myoclonic-atonic seizures (MAS) – short epileptic generalized seizures in the form of sudden falling spells (or drop attacks). Inour study were vealed MAS in 1.3% of all cases of epilepsy with onset of seizures before 18 years old (n=1261). Predominance of man among the patients was revealed (76.5% men versus 23.5% woman). The most often in the patients with MAS myoclonic-astatic epilepsy (MAE) was diagnosed – 41,2% of cases. Symptomatic and cryptogenic forms of focal epilepsy were diagnosed in 35.2% of the patients. Lennox-Gastaut syndrome was revealed in 23.6% of cases. Onset of epilepsy with MAS varied widely – from 9 month to 6 year soflife; middle age of onset was 3.4 years±1.28 years. In all the cases MAS occurred in combination with other types of seizures: there can be any of 9 differenttypes of seizures. The most often myoclonic seizures (70.6% of cases), generalized convulsive seizures (47.1%) and absences (47.1%) were registered. Remission was achieved in 64.7% cases of epilepsy, associated with MAS. Reduction of seizure frequency ≥50% on antiepileptic treatment was achieved in 29.4% of the patients. Only in one patient (5.9%) the therapy was not effective. Our study demonstrated different efficacyof antiepileptic drugs in the treatment of different epileptic syndromes, associated with MAS.
34-40 495
Abstract: the aim of the study was to analyst the efficiency and safety of topiramate in children and adult epileptic populations depending on the patient’s age and forms of epilepsy. 597 epileptic patients receiving topiramate (302 males, 295 females) aged from 2 up 57 years were followed with video-EEG control during the period of 2002-2012. Topiramate was effective at 66,2% of patients (n=395). Low efficiency was seen at 26,8% (n=160) patients. The aggravation effect has been noted at 7% (n=42) of patients. Drug compliance (for >1 year) was 61,8% (n=369). High efficiency in group 2-3 year (n=134) was 53,8% (n=72), low efficiency in 34,3% (n=46), aggravation – in 11,9% cases (n=16); in group >3-7 years (n=253) high efficiency 59,7% (n=151), low 32% (n=81), aggravation in 8,3% (n=21); in pediatric population >7 years (n=132) high efficiency 81,8% (n=108), low effect in 15,2% (n=20), and 3% aggravation (n=4); in adult population >18 years (n=78) the efficiency was 82,1% (n=64), low effect 16,6% (n=13) and aggravation in 1,3% (n=1). So, topiramate is highly effective medication in the therapy of idiopathic generalized epilepsies without absences and in symptomatic/cryptogenic focal forms of epilepsy. Topiramate could also be useful additional drug in the therapy of epileptic encephalopathies. With the increasing of patients’ age the efficiency of topiramate raised, while the aggravation risks decreased. Peak of aggravation potential was seen in early childhood population and maximal effectiveness – in children up 7 years and adult population.


41-48 457
Abstract: the experience of the authors and critical analysis of existing results of the various studies showed unambiguous conclusions about the prospects of the use of modern medicines, in particular the efficiency and safety of Depakine® Chronosphere™. The inclusion of valproatеs in the form of microgranules to standards of treatment of children and adult patients with epilepsy seems justified with clinical and economic perspectives.
49-58 484
Abstract: paraneoplastic limbic encephalitis (PLE) is clinical form of paraneoplastic neurological syndrome, an autoimmune disorder of the central nevrous system. The incidence of PLE is about 3 cases per 1,000 patients with cancer. PLE is characterized by acute or subacute development of memory disorders, symptomatic epilepsy, psychiatric disorders. The authors present the current data on the pathogenesis, clinical presentation, diagnosis, and treatment of PLE, a clinical case of symptomatic epilepsy in the 38-year-old man with PLE associated with testicular cancer.
59-64 1056
Abstract: major issues of differentiating epileptic and non-epileptic paroxysmal phenomena of sleep are presented in this article. Quality differentiation is possible in case of good knowledge of semiology of sleep-related epileptic seizure types and epileptic syndromes. Difficulties in identification can lead to further diagnostic mistakes. Parasomnias are the most frequently encountered non-epileptic paroxysmal events in sleep, which are related to both non-rapid-eye movement (NREM) sleep and rapid-eye movement (REM) sleep. NREM-sleep parasomnias are otherwise referred to as arousal disorders. They could be mistaken for frontal lobe epilepsy seizures, which predominantly occur at night and are not readily accompanied by epileptiformabnormalities on EEG. Other sleep phenomena also should be considered in differentiating nocturnal epilepsies. Obstructive sleep apnea, periodic leg movements in sleep and some sleep episodes sometimes are expressed with a pattern hardly distinguishable from epileptic seizures. Complex approach and appropriate diagnostic algorithm would further help clinicians in this field to better assess any given situation.
65-75 498
Abstract: A number of pathophysiologic manifestations can be distinguished that are characteristic of both epilepsy and other common vascular, demyelinating and degenerative central neural system (CNS) diseases. This is a consequence of neural system's endogenizing capacity that determines the possibility of its response with non-specific typical pathologic processes to various pathologies and at different levels of structural and functional organization. The current concept of the blood-brain barrier (BBB) structural and functional organization fundamentally differs from those previously suggested: by early 1980s it became recognized that the BBB represents a dynamic morphofunctional entity, formed by brain capillary endothelial cells and periendothelial structures. This reflects the accumulation of knowledge on this subject that received close attention of scientific and academic communities resulting in an increased number of fundamental and applied BBB studies. In order to realize the role of the BBB in CNS functioning in normal and pathologic settings, it is necessary to clearly understand its development during the ontogeny, as well as exogenous and endogenous factors that can lead to BBB damage ('disrupture'). This will help to verify the number of markers that allow adequate evaluation of the BBB and neural tissue condition, and also to chose a strategy for the management of patients with CNS disorders.
76-82 525
Abstract: he review presents an analysis of the formation of the views of scientists on the pathogenesis and treatment of epilepsy in the XIX century. The authors analyze the main works of scholars Department of Nervous and Mental Diseases of the Imperial Medical-Surgical Academy, devoted to issues of experimental studies of changes in cerebral blood flow during seizures, the improvement of the treatment of patients with epilepsy. The paper also highlighted the prerequisites for the development and nature of the hypothesis of «convulsive center», and the role of V.M. Bekhterev and his students in establishing the role of the cerebral cortex in the pathogenesis of epileptic seizures.

ISSN 2077-8333 (Print)
ISSN 2311-4088 (Online)