7 results on '"M. A. Nazarova"'
Search Results
2. Diagnostic capabilities of transcranial magnetic stimulation to predict motor recovery after a stroke
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M. A. Nazarova, P. A. Novikov, V. V. Nikulin, and G. E. Ivanova
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medicine.medical_treatment ,Electroencephalography ,050105 experimental psychology ,03 medical and health sciences ,0302 clinical medicine ,Motor system ,transcranial magnetic stimulation ,Medicine ,0501 psychology and cognitive sciences ,RC346-429 ,Stroke ,medicine.diagnostic_test ,business.industry ,05 social sciences ,Magnetic resonance imaging ,motor rehabilitation ,medicine.disease ,equipment and supplies ,stroke ,Transcranial magnetic stimulation ,Neurology ,Brain stimulation ,motor recovery prognosis ,Motor recovery ,Neurology (clinical) ,Neurology. Diseases of the nervous system ,business ,Motor mapping ,Neuroscience ,human activities ,030217 neurology & neurosurgery - Abstract
Transcranial magnetic stimulation is a method of focal non-invasive brain stimulation, characterized by high spatial and temporal resolution. To date, diagnostic transcranial magnetic stimulation has been used in clinical practice primarily to assess an involvement of the upper motor neurons and to measure the velocity of the neuronal impulse propagation. However, in the last 10 years, a possible range of transcranial magnetic stimulation diagnostic applications has significantly expanded. Many transcranial magnetic stimulation approaches are coming from scientific laboratories to clinical practice due to an increased availability of transcranial magnetic stimulation equipment, in particular, magnetic resonance imaging navigation for transcranial magnetic stimulation and a combination of the transcranial magnetic stimulation with electroencephalography and also due to an increased awareness of the clinicians. The diagnostic potential of transcranial magnetic stimulation in relation to motor recovery after a stroke can be classified into 4 directions:1) assessment of the vertical tracts integrity (primarily, the cortico-spinal tract); 2) an assessment of the cortical excitation-inhibition balance;3) probing of the functional and effective connectivity among brain regions (primarily, cortical convexity and cerebellum);4) motor mapping to evaluate cortical reorganization.In this article we will present these 4 directions of the transcranial magnetic stimulation application to study motor system pathophysiology and to predict motor outcome in stroke, including both existing and developing approaches.
- Published
- 2020
3. Levels of toll-like receptors 2 and 4 in serum of men with postinfarction cardiosclerosis and its relationship with antiphospholipid syndrome components
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L. V. Burdeina, M. S. Nazarova, and M. A. Stanislavchuk
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medicine.medical_specialty ,Endothelium ,Cardiac fibrosis ,business.industry ,General Medicine ,medicine.disease ,Coronary arteries ,medicine.anatomical_structure ,Antiphospholipid syndrome ,Internal medicine ,medicine ,Cardiology ,Myocardial infarction ,Endothelial dysfunction ,medicine.symptom ,business ,Stroke ,Livedo reticularis - Abstract
Annotation. There is a tendency for an increase of incidence of coronary heart disease (CHD) among young people, with the development of acute myocardial infarction (MI) in the absence of marked atherosclerosis and obstruction of the coronary arteries. Antiphospholipid syndrome (APS), cellular and humoral mediators of immunoinflammatory activation of endothelium are considered as factors of non-obstructive damage to the coronary vessels. New trigger factors for endothelial dysfunction, cardiac fibrosis, and myocardial hypertrophy include toll-like receptors (TLR2 and TLR4). Antiphospholipid antibodies may act as endogenous activators of toll-like receptors. The study of the association between APS components and expression of toll-like receptors in patients with CHD with postinfarction cardiosclerosis remains relevant. The aim is to study the levels of TLR2 and TLR4 and its relationship with APS components in men with postinfarction cardiosclerosis. 164 patients with stable CHD with postinfarction cardiosclerosis (100% of men, age 53.0±9.14 years) and 48 men of control group (without CHD) were examined. Levels of total antiphospholipid antibodies (aPL), antibodies to β2-glycoprotein 1 (anti-β2-GP 1) IgG and IgM, TLR2, TLR4 in serum were determined by ELISA. The studies were conducted in compliance with bioethical standards. Statistical processing of the results was performed in SPSS Statistics 22.0. Determined that men with postinfarction cardiosclerosis showed higher levels of TLR2 and TLR4 (in 1.8–2.2 times, p
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- 2019
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4. Characteristics of electrophysiological activity of the cerebral cortex in children with arthrogryposis
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E. D. Blagoveschenskiy, O. E. Agranovich, E. L. Kononova, A. G. Baindurashvili, M. A. Nazarova, A. N. Shestokova, E. L. Gabbasova, and V. V. Nikulin
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0301 basic medicine ,medicine.medical_specialty ,Central nervous system ,Audiology ,Electroencephalography ,Biceps ,long-range temporal correlations ,arthrogryposis ,rehabilitation ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Autologous transplantation ,RC346-429 ,Muscle contracture ,Arthrogryposis ,medicine.diagnostic_test ,business.industry ,electroencephalogram ,Spinal cord ,030104 developmental biology ,medicine.anatomical_structure ,Neurology ,Cerebral cortex ,Neurology. Diseases of the nervous system ,Neurology (clinical) ,medicine.symptom ,business ,030217 neurology & neurosurgery - Abstract
Background. Arthrogryposis is one of the most severe congenital abnormalities of the musculoskeletal system characterized by 2 or more contractures of the large joints, muscle and anterior grey column pathology. One of the main problems making selfcare limited or impossible for the patients is an absence of the active movements in the joints of the upper extremities which can be restored through autologous transplantation from the various donor areas. Processes of the rehabilitation after these operations are associated with neuronal remodeling in the central nervous system both in the spinal cord and the brain, in the cortial regions in particular.The objective is to evaluate possible reflection of arthrogryposis in the amplitude and neurodynamical characteristics of the electroencephalogram (EEG) in children.Materials and methods. Electrophysiological characteristics of the cerebral cortex in children with arthrogryposis and healthy children of the same age were examined. Such EEG characteristics as power and long-range temporal correlations (evaluation of the neuronal activity dynamics) in ranges of 4–8, 8–12, and 12–16 Hz were measured. The results were evaluated in accordance with clinical scales.Results. Data analysis has shown that children with arthrogryposis have significantly decreased EEG power in all of the studied ranges compared to healthy children. Additionally, a significant correlation between EEG power and the level of restoration of motor functions in the upper extremities after autologous transplantation of various muscle groups in the position of the biceps was observed. The obtained results reflect correlation between the electrophysiological parameters of the cerebral cortex and processes associated with arthrogryposis pathology. However, neurodynamical parameters in children with arthrogryposis are similar to those in healthy children. The results allow to state that arthrogryposis is reflected through decreased electrical activity of the cerebral cortex in 4–16 Hz range with preservation of neurodynamic characteristics typical for disease-free children.Conclusion. In this study, a significant difference in EEG power in 4–8, 8–12, and 12–16 Hz ranges between children with arthrogryposis and healthy children was demonstrated. However, there was no difference in such an important neurodynamical characteristic as longrange temporal correlations. It is possible that decreased amplitude of EEG rhythms in children with arthrogryposis is caused by their lower motor activity in general.
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- 2018
5. Catalytic alkylation of cresols with propanol-1
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D. B. Tagiev, M. K. Nazarova, and N. A. Agaeva
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inorganic chemicals ,Reaction conditions ,integumentary system ,organic chemicals ,General Chemical Engineering ,chemistry.chemical_element ,General Chemistry ,Manganese ,Cresol ,Alkylation ,Catalysis ,Propanol ,chemistry.chemical_compound ,chemistry ,parasitic diseases ,medicine ,Ferrite (magnet) ,Organic chemistry ,heterocyclic compounds ,Cobalt ,medicine.drug - Abstract
Study of the reaction of alkylation of ortho-, meta-, and para-cresols with propanol-1 in the presence of ferrite cobalt and manganese catalysts is reported. The effect of the catalyst composition and reaction conditions on the yield and isomeric composition of the resulting propyl derivatives of cresol was examined and the main and side conversions occurring in the catalysis were determined.
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- 2013
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6. Platelet aggregation activity and beta-adrenoblocker therapy in patients with dilated cardiomyopathy
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P. N. Isakhanova, Kh. A. Mamatkulov, M. Kh. Nazarova, Yu. N. Ziyaev, and Sh. I. Makhamatova
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medicine.medical_specialty ,Platelet aggregation ,business.industry ,platelet aggregation activity ,beta-adrenoblockers ,Dilated cardiomyopathy ,ischemic dilated cardiomyopathy ,medicine.disease ,idiopathic dilated cardiomyopathy ,Internal medicine ,RC666-701 ,medicine ,Cardiology ,Diseases of the circulatory (Cardiovascular) system ,In patient ,Cardiology and Cardiovascular Medicine ,Beta (finance) ,business - Abstract
Aim. To investigate the specifics of ischemic and idiopathic dilated cardiomyopathy (DCMP), platelet aggregation activity, and the reaction of the latter to the beta-adrenoblocker (β-AB) therapy with atenolol or bisoprolol. Results. In DCMP patients, a significant increase in velocity and maximal amplitude of ADP-induced platelet aggregation, as well as a significant reduction in the time to the maximal aggregation amplitude, was observed. In both therapy groups, all parameters of platelet aggregation activity were significantly higher in ischemic vs. idiopathic DCMP patients. Long-term bisoprolol therapy provided a more manifested antiaggregant effect of the basis treatment, compared to atenolol therapy. Conclusion. DCMP patients, especially ones with ischemic DCMP, demonstrated an increase in platelet aggregation activity. Long-term bisoprolol therapy facilitated a more pronounced anti-aggregant effect of the basis treatment, compared to atenolol treatment.
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- 2012
7. The study of methylation status of WIF1 gene in patients with HPV-associated benign lesions of the skin and mucous membranes
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S. N. Ahtyamov, E. N. Tarasenko, N. N. Potekaev, S. A. Masyukova, I. O. Babkina, M. N. Nazarova, A. A. Poloznikov, and V. I. Kiselev
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0301 basic medicine ,business.industry ,LRP5 ,Dermatology ,Methylation ,WIF1 ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,Infectious Diseases ,Membrane ,030220 oncology & carcinogenesis ,Cancer research ,Medicine ,In patient ,business ,Gene - Published
- 2017
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