LECTURES
The paper describes spinal dural arteriovenous fistulas (SDAVF), the most common type of spinal cord vascular anomalies. SDAVFs account for 60–80% of the spinal cord vascular anomalies. The causes of SDAVFs, the specific features of their hemodynamics, and their classification remain the subject matter of disputes.
SDAVFs form in dura mater tissue, on the dorsal surface of radicular cuffs. The pathogenesis of neurological disorders in SDAVF has determined the name «venous hypertensive myelopathy», a spinal cord injury occurring in their presence. Pain and paresthesias, cacesthesia (more commonly in their distal parts), and motor disorders as flail legs are observed at the onset of SDAVF in typical cases. On average, 12 to 44 months elapse to establish its diagnosis. In addition of motor and sensory disorders, sphincter impairments and sexual dysfunction are detected in the patients at the time of diagnosis. By this time, most patients have already neurological disability.
The paper presents the history of studying SDAVF, the existing classifications of arteriovenous malformations and fistulas, the clinical manifestations of venous hypertensive myelopathy in SDAVF, neuroimaging findings, and treatment options.
ORIGINAL INVESTIGATIONS
Objective: to evaluate the efficiency of epilepsy therapy in the two periods 2006–2007 and 2013–2014 due to drug provision-related changes: the use of antiepileptic drugs (AEDs) in accordance with their international nonproprietary name.
Patients and methods. The continuous sample survey enrolled patients aged 18 years and older, who had been seen by an epileptologist at the Moscow Regional Research Clinical Institute in 2006–2007 (n=1200) and 2013–2014 (n=1450). The patients who had received initial therapy (n=384) were divided into 2 groups in accordance with the type of drug provision. Group 1 (n=124) had recommended AEDs. In Group 2 (n=260), there was switching between AED analogues in 80% of the patients. Therapeutic efficiency was comparatively analyzed in relation to the AEDs used and treatment policies.
Results. In 2013–2014 versus 2006–2007, the rate of remissions and the number of respondents was halved. The analysis demonstrated significant differences (p<0.05) between Groups 1 and 2 in the following indicators: the number of respondents (75:52%), remission rates (58:38%), pharmacoresistance (25:47%), the frequency of use of brand (54:34%) and generic (45:65%) AEDs, and that of switching between AED analogues (0:80%).
The quality-of-life indicators are integral characteristics of treatment and diagnostic measures in modern epileptology.
Objective: to assess the social adaptation and quality of life in reproductive-aged women with epilepsy.
Subjects and methods. A sociological survey using the Quality of Life Satisfaction questionnaire and the European Quality of Life-5 Dimensions (EQ-5D) was carried out in 352 women living in the Krasnoyarsk Territory.
Results. At the time of the study, 21.3% of the patients were unemployed. Disability related to epilepsy was in 13.1% of women, mainly in those with cryptogenic (22.3%) and symptomatic (14.4%) epilepsy. Most of the women were unsatisfied with their job activity (55.1%), financial status (64.6%), and physical health (65.3%). Mainly the patients with symptomatic epilepsy reported dissatisfaction with their psychological status. The patients had employment problems (12.5%), inability to work in their specialty (12.5%) and to get the desired specialty (10.3%), and labor maladaptation (8.8%). There was a preponderance of women with higher education (40.3%) and 21.3% continued their studies. Warm family relations and help from relatives and friends (65.4%), hope for their recovery (50.7%), contacts with their friends (30.1%), and plans for future (34.6%) were important for the women to control the disease.
Conclusions. The findings suggest that family, personal, maternity problems are more important causes of social maladaptation in epileptic women.
Objective: to investigate the efficacy/tolerability of topiramate in reproductive-aged women.
Subjects and methods. A group of 58 patients in fertile age (18–35 years) with a long history of focal (n=44) or idiopathic generalized (n=14) epilepsy (FE and IGE) who received mainly combined therapy with 2 antiepileptic drugs (AEDs) was analyzed. 82.8% of the patients were overweight; 51.7% had one or other menstrual cycle disorders; however, the women had been followed up by a gynecologist in exceptional cases.
Results. Switch from one of the parent AEDs to topiramate or its incorporation into a treatment regimen as an additional drug substantially improved the course of the disease: remission at 12 months was achieved in 59.1% of the patients with FE and 78.6% of those with IGE. 29.3% of the patients receiving dual therapy, the second medication of which was topiramate, were observed to have lost weight not only if those had high baseline body mass index (BMI), but also if those had normal BMI at baseline. 8.6% of all the patients and 16.7% of those with menstrual cycle disorder achieved normalization of menstrual function. Topiramate was discontinued only in 1 (1.7%) patient because of critical weight loss (BMI<15). In addition to substantial improvement, topiramate used in mono- or dual therapy for FE and IGE may normalize weight and a menstrual cycle. Menstrual function is indicated to be monitored in epileptic women.
Objective: to investigate the specific features of epilepsy that manifests itself in the presence of chronic cerebrovascular disease.
Patients and methods. A total of 304 patients (a study group of 174 patients with new-onset seizures developing in the presence of cerebrovascular disease and a control group of 130 patients with cerebrovascular disease and no seizures) were examined. They underwent clinical neurological examination, electroencephalography (EEG), ultrasonic duplex scanning of extra- and intracranial arteries with functional tests, and visualization of brain structures.
Results. Focal seizures were prevalent in the patients with cerebrovascular disease and epilepsy. It was found that there was a preponderance of left-sided localization of EEG foci of abnormal activity and a tendency to more commonly detect subcritical and critical stenoses in the left carotid bed in the patients with epileptic seizures. Diminished perfusion reserves in the posterior circulation system were more frequently observed in the patients with seizures in the presence of cardiovascular diseases. Moreover, the patients with seizures displayed a more profound degree of brain ischemia with the frequent cortical and subcortical localization of dyscirculatory foci. Thus, a study of perfusion reserves, localization of vascular foci, and degree of occlusive changes in the wall of brachiocephalic vessels allows identification of risk factors for epilepsy in the patients with cerebrovascular disease and promotes the prediction of the course of the disease.
Objective: to make a pharmacoeconomic comparison of the administration of first- and second-line drugs in the treatment of multiple sclerosis through cost, cost-effectiveness, and budget impact analyses using the 2015 state prices.
Material and methods. A pharmacoeconomic analysis was carried out on the basis of the data available in the literature on trials of the effects of the drugs on the rates of exacerbations and disability. On calculating, the authors took into account the current standards for the out- and inpatient management of patients with this nosological entity in accordance with the compulsory health insurance (CHI) program; prices for state drug purchases in March 2015; prices for medical services in compliance with the CHI standards in Moscow in 2015; the average sizes of minimum wage, salary, and disability grants with consideration for a discount rate of 3%. The cost-effectiveness and budget impact analyses were performed for intramuscular interferon (INF)-β1a (avonex, 30 μg), subcutaneous INF-β1a (rebif, 44 μg), subcutaneous INF-β1b (ronbetal, 8,000,000 IU), subcutaneous INF-β1b (betaferon, 9,600,000 IU), subcutaneous glatiramer acetate (copaxone, 20 mg), intravenous natalizumab (tyzabri, 300 mg), and oral fingolimod (gilenya, 0.5 mg).
Results and discussion. The second-line drug tyzabri outperforms the first-line agents for cost-effectiveness. The first-line drugs betaferon and copaxone is slightly exceeded in this indicator by tyzabri; the other both first- and second-line agents compared are all the more inferior in this indicator. The budget impact analysis has shown that the cost of the second-line drugs was higher than that of the first-line ones.
CLINICAL OBSERVATIONS
The data available in the literature on the role of melatonin in the regulation of circadian rhythms and sleep disorders in the population and in patients with mental diseases are analyzed. The cause of insomnia may be circadian rhythm disorders due to the age-related decline in the elaboration of the endogenous hormones that are responsible for the quality and duration of sleep, one of which is melatonin.
Sustained-release melatonin is a synthetic analogue of the endogenous human pineal hormone melatonin. According to clinical findings, the main proven clinical effects of sustained-release melatonin 2 mg are a reduction in the latency of sleep, improvement of its quality, and lack of daytime sleepiness. The drug causes no dependence on its long use and rebound symptoms (increased insomnia symptoms), positively affects cognitive functions, and lowers nocturnal blood pressure in hypertensive patients.
The paper describes a clinical case of a female patient with recurrent depressive disorder, in whom sustained-release melatonin 2 mg has demonstrated high efficacy and good tolerability in the combination therapy of sleep disorders in the pattern of depression.
To manage patients with low back pain is an urgent problem of modern medicine. The paper considers the main causes of chronic nonspecific lumbago and the principles of its diagnosis and treatment in the context of evidence-based medicine. Medical treatment using analgesics (nonsteroidal anti-inflammatory drugs (NSAIDs), weak opioids), antidepressants, therapeutic exercises, and cognitive-behavioral therapy as components of a multidisciplinary treatment is noted to be highly effective. The efficacy and side effects of NSAIDs, the high efficiency and safety of using meloxicam in different dosage forms are outlined.
The authors set forth their experience in treating 85 patients with chronic low back pain and an observation of a female patient who has concurrent chronic migraine and abuses analgesics.
REVIEWS
Vascular cognitive impairments (CIs) are heterogeneous in the mechanism of their occurrence and may develop in different extent of brain damage, in different locations, and the number of foci. Their etiological factors are various. The mechanism for the development of CIs may be associated with impairments of both per se the structures responsible for cognitive functions (frontal cortex, subcortical-cortical interactions, and hippocampus) and deafferentation of the cortex and limbic structures due to periventricular white matter lesion or local lesion of the basal ganglia and thalamus. The pattern of CIs depends on the predominant involvement of cortical or subcortical regions or their combinations. The progression of CIs is also variable. In chronic cerebral circulatory insufficiency, CIs develop gradually over several years. Poststroke CIs manifest themselves acutely or subacutely. 6-27% of patients are diagnosed with dementia 3 months after acute cerebrovascular accident. The risk of subsequent dementia is 7% within the first year and 48% after 25 years.
The paper reviews the most important trials of citicoline used in CIs. The drug has a multicomponent activity spectrum that permits its use in CIs of varying genesis. By taking into account its good tolerability and safety, the drug may be recommended for a wide circle of patients, including for elderly patients with comorbidity.
PHARMACOTHERAPY
REVIEWS
IN MEMORY OF OUR TEACHER
ISSN 2310-1342 (Online)