[Clinical case of MELAS syndrom]. / Klinicheskii sluchai sindroma MELAS.

Clinical case of mitochondrial encephalomyopathy manifested with lactic acidosis and stroke-like episodes was presented. The patient diagnosis was performed in childhood, based on clinical manifestation, and was confirmed with molecular genetic test (mutation m.3243A>G in gene MT-TL1 was revealed). Appropriate patient management required united efforts of different medical specialists with simultaneous administration of different drugs, modulating intracellular energy production. Due to contemporary medical science achievements, life expectancy of patients with mitochondrial diseases increases, and in age 18 such patients should be treated by adult-practice physicians. Due to such pathology rare incidence the adult-practice medical practitioners are insufficiently informed about principles of mitochondrial disease treatment, that has negative influence on patients condition.

[Portable telemedical complex usage perspectives for medical care of elderly and senile patients with cerebrovascular pathology.]

The article discusses perspectives of medical care in elderly and senile patients with cerebrovascular pathology with portable telemedical complex use. Analysis of telemedical cooperation physician-consultant-patient and discussion of medical equipment criteria for telemedical complex selection and organizational together with legal issues of medical data transfer, storage and access were performed. The important clinical features of cerebrovascular pathology in elderly patients were presented, which determined necessity of highly qualified medical specialist involvement in management of such patients. The opportunities of portable medical complex usage were discussed.

[Prevention of cognitive disorders in elderly and senile patients.]

The aim of the study was to evaluate the effect of vitamin D on the cognitive functions and quality of life in elderly and senile patients with cerebrovascular disease. 100 elderly and senile patients with cerebrovascular disease were examined: 60 people - level 25 (OH)D in blood serum <20 ng/ml (deficiency, pronounced deficiency), in 40 people this indicator was ≥30 ng/ml (within the normal range). Cognitive functions were evaluated according to neuropsychological scales (MMSE, MoCA, FAB, «clock drawing test¼, Schulte tables). To study the quality of life, all patients filled out a general questionnaire SF-36. The body's vitamin D supply was judged by the content of 25 (OH)D in the blood serum. Patients with low vitamin D levels (25 (OH)D <20 ng / ml) were divided into two subgroups: 30 people were prescribed cholecalciferol at a dosage of 8 000 IU/day for three months and 30 people who were not treated with cholecalciferol. The study showed that patients with low levels of vitamin D [25 (OH)D <20 ng/ml] had significantly worse indicators when assessing both cognitive functions and quality of life. The work proved that cognitive functions affect the quality of life. In patients with extremely low levels of vitamin D [25 (OH)D <20 ng/ml], after taking cholecalciferol at a dosage of 8000 IU/day for three months, there was a normalization of the level of 25 (OH)D (the average level of which was 34,10±7,42 ng/ml) in the blood serum and there was a significantly significant positive dynamics in assessing cognitive functions and quality of life.

[The molecular mechanisms of platelets activation in patients with cerebrovascular disease].

Cerebrovascular disease is a main cause of mortality and one of the big medical problems. After the vascular wall's damage the endothelial cells secrete the von Willebrand factor which then connects with its platelet's receptor GP Ib-V-IX. There are two polymorphisms Thr145Met and T(-5)C of the GP Iba gene associated with arterial thrombosis development. Also the difference in platelets' genes expressions was shown in patients with various clinical course of ischemic heart disease. The aim of this study was to investigate the role of platelet's receptor for von Willebrand factor in platelets' activation in patients with cerebrovascular disease. 123 patients with cerebrovascular disease and 97 healthy donors were included into the study. We analyzed the level of receptor for von Willebrand factor on platelet's membrane by flow cytometry, Thr145Met and T(-5)C GP Iba polymorphiams by PCR-RFLP, the GP Iba gene expression by RT-PCR and ADP-induced platelet aggregation by Born method. We have shown: 1) the 145Met GP Iba allele prevalence in patients with atherotrombotic stroke development due to macroangiopathy; 2) the pre-mRNA transform into the mature mRNA in activated platelets and this process may be stopped by the antiplatelet therapy by acetylsalicylic acid.

[Gender differences in clinical and hemoreologic disorders in elderly patients with non-cardioembolic ischemic stroke].

Clinical manifestation and platelet homeostasis parameter results in elderly patients with atherothrombotic and lacunar strokes are presented. There is platelet activation in these patients manifested by increasing of P-selectin expression in response to adenosindiphosphate induction on flow-cytometry. Agregometry method was not informative for platelet activity estimation in these patients. Von Willebrand factor receptor expression on the platelet may have prognostic value for acute period. The fibrinogen receptor expression on the platelet was increased in women with stroke comparing with men.