[Studying the possibility of using methods for assessing expressive speech developmental disorders in children 3-6 years old].

Objective: To study the possibility of using methods (DP-3, speech therapy examination, neuropsychological study) to assess expressive speech development disorders in children aged 3 to 6 years inclusive.

Material And Methods: The study included 60 children with expressive speech disorder aged 3 to 6 years. At the initial stage, linguistic validation of the questionnaire was carried out according to generally accepted recommendations.

[The effect of insomnia on mild cognitive impairment in patients with vascular risks: results of a three-year longitudinal study].

Objective: To assess the dynamics of sleep parameters based on the analysis of three items of HDRS-17, designed to measure the severity of insomnia, during 36 months of follow-up and their relationship with indicators of the cognitive phenotype in patients with vascular risk factors.

Material And Methods: The longitudinal study included 51 patients (mean age 57.7±6.

[Cerebral amyloid angiopathy].

Cerebral amyloid angiopathy (CAA) is a progressive disease characterized by the deposition of β-amyloid in the walls of blood vessels in the brain, which leads to their damage and disruption of normal blood flow. Morphologically, CAA is characterized by both isolated lesions (microhemorrhages with the appearance of cortical superficial siderosis, lacunar infarctions) and widespread changes (hyperintensity of the deep and periventricular white matter, expansion of the perivascular spaces) of cortical and subcortical localization. CAA is considered a major cause of cognitive impairment and intracerebral microbleeds, especially in patients with Alzheimer's disease.

[Rehabilitation of patients with post-stroke cognitive impairment using the P300-based brain-computer interface: results of a randomized controlled trial].

Objective: To study the effects of a 10-day cognitive training using the brain-computer interface (BCI) technology at the P300 wavelength on the recovery of cognitive functions in poststroke patients.

Material And Methods: The study included 30 patients, aged 22-82 years, with ischemic stroke less than 3 months old and moderate cognitive impairment (<26 points on the Montreal Cognitive Assessment Scale (MoCA)). All patients underwent neuropsychological testing, assessment of the presence of depression, assessment of activity in daily life.

[A two-year prospective longitudinal study of the dynamics of cognitive functions in different periods of stroke].

Objective: To examine the dynamics of cognitive functions 3, 6, 12, and 24 months after ischemic stroke (IS).

Material And Methods: The study included 32 patients (women 21.4%), aged 40-71 years (mean age 58.

[Imaging of brain activity using fMRI in a patient with subjective cognitive decline].

In clinical practice, subjective cognitive decline (SCD) is often difficult to diagnose because it is not detected by standard neuropsychological and cognitive tests.The described clinical case is presented to demonstrate the difficulties of diagnosis and treatment choice in a patient with SCD. fMRI might be considered as an instrumental method to analyze the functional relationship between the activity of brain structures and cerebral circulation in patients with SCD.

[Neurodevelopmental disorders in children and the possibilities of their pharmacotherapy].

Neurodevelopmental disorders (NDD) are characterized by disturbances of the formation of cognitive functions, communication skills, behavior characteristics and/or motor skills, which are caused by abnormalities in the course of the processes of neuroontogenesis. In the clinical practice of a pediatric neurologist and pediatrician, a significant part consists of patients with NDD without a general decrease in intelligence, primarily with speech development disorders, attention deficit hyperactivity disorder (ADHD), specific learning disorders (dyslexia, dysgraphia, dyscalculia). NDD represent a heterogeneous group of diseases, having multifactorial origin and a neurobiological nature, which are caused by genetic mechanisms and early (perinatal) brain damage.

Efficacy and Safety of Divaza for the Correction of Oxidative Disturbances in Patients with Cerebral Atherosclerosis: A Randomized Controlled Trial.

Objective: The objective of this study was to determine if Divaza, a drug with nootropic and antioxidant effects, was safe and effective for the correction of oxidative disturbances and to stabilize cognitive impairment in patients with cerebral atherosclerosis.

Study Design: The study design consisted of a 12-week multicenter, randomized, double-blind, placebo-controlled, prospective trial in parallel groups.

Setting: The setting in which the study was conducted comprised 10 clinical centers across the Russian Federation.

[Association of markers of endothelial dysfunction with depression in middle-aged patients with cerebral microangiopathy].

Objective: To assess the ratio of levels of peripheral markers of inflammation and biomarkers of endothelial dysfunction (ED) with the severity of depression in middle-aged patients with cerebral microangiopathy.

Material And Methods: In an observational study of outpatients (=262, 42.1% of men, 57.

Vascular cognitive impairment: pathophysiological mechanisms, insights into structural basis, and perspectives in specific treatments.

Vascular cognitive impairment (VCI) and vascular dementia are the most common forms of cognitive disorder associated with cerebrovascular disease and related to increased morbidity and mortality among the older population. Growing evidence suggests the contribution of blood-pressure variability, cardiac arrhythmia, hyperactivation of the renin-angiotensin-aldosterone system, endothelial dysfunction, vascular remodeling and stiffness, different angiopathies, neural tissue homeostasis, and systemic metabolic disorders to the pathophysiology of VCI. In this review, we focus on factors contributing to cerebrovascular disease, neurovascular unit alterations, and novel approaches to cognitive improvement in patients with cognitive decline.

[Pathogenesis of endothelial dysfunction in cerebral atherosclerosis and their correction].

The authors review the studies on oxidative stress in the pathogenesis of cerebrovascular diseases (CVD) and highlight a contribution of endothelial dysfunction to the CVD development. Own experience of using divasa in patients of old and very old age with chronic CVD comorbid to cerebral atherosclerosis is described.

[Nitric oxide: from the mechanism of action to pharmacological effects in cerebrovascular diseases].

The article presents the data of studies of nitric oxide (NO) in the pathogenesis of cerebrovascular diseases. It is emphasized that endothelial dysfunction contributes to the formation of cerebrovascular diseases. Generalized data on preparations with endothelioprotective effect, as well as own data on the use of the preparation 'Divaza' in patients of middle and advanced age with chronic cerebrovascular disease are given.

[Cerebral markers of endothelial dysfunction in chronic brain ischemia].

A review of the main markers of endothelial dysfunction in chronic cerebral ischemia is presented. The quantitative changes in the level of endothelial dysfunction markers in chronic cerebral ischemia help to evaluate the efficacy of preventive and therapeutic pharmacological activities. The results of clinical trials have demonstrated that the course use of divazа in patients with chronic cerebral ischemia leads to improvement of both clinical indicators and laboratory markers for normalization of cerebral ischemia and endothelial dysfunction.

[Tthe efficacy and safety of drug therapy divaza in patients with chronic cerebral ischemia].

Aim: To evaluate the efficacy and safety of divazа in the treatment of cognitive and emotional disorders in patients with chronic cerebral ischemia (CCI) based on clinical findings and laboratory markers of endothelial dysfunction.

Material And Methods: Thirty patients with CCI, aged 40 to 70 years, were examined. All patients were treated with divazа (2 tablets 3 times a day) for 12 weeks.

[Mesenchymal stromal cells synchronize the rhythm of protein synthesis under the effect of an exogenous signal].

A comparative study was performed of dense 5-hour cultures of rat hepatocytes and equal-density cultures of mesenchymal stromal cells (MSC) isolated from human adipose tissue of rat bone marrow. The cells were grown on collagen-coated class slides in serum-free medium. Unlike in hepatocytes, no rhythm of protein synthesis was initially revealed in MSC, but such a rhythm manifested itself when the culture medium was supplemented with melatonin (2 nM, 5 min).

[Self-synchronization of the protein synthesis rhythm in HaCaT cultures of human keratinocytes].

In cultures of human keratinocytes HaCaT contained in a serum-free medium on glass, a circahoralian rhythm of protein synthesis was found similar to the one in hepatocytes in vitro. The intensity of the synthesis was determined by the inclusion of 3H-leucine corrected for the pool of free marked leucine. Rhythm was studied in washed 1- or 2-day cultures after the change of the medium.

Melatonin modifies the rhythm of protein synthesis.

Melatonin (5 nM) added to medium with primary hepatocyte cultures shifted the phase of circahoralian rhythm of protein synthesis and hence, can be a factor synchronizing fluctuations in protein synthesis and rhythm organizer in the hepatocyte population. Blockade of melatonin receptors with luzindole (20 nM) arrested rhythm organization of protein synthesis by melatonin. Prospects of studying biochemical mechanisms of protein synthesis rhythm organization with other drugs (calcium agonists, similarly to melatonin) are discussed.

[Melatonin injected into rat efficiently synchronizes the rhythm of protein synthesis in primary hepatocyte cultures isolated from this rat].

Melatonin injected intraperitoneally into rat synchronizes the ultradian rhythm of protein synthesis after 100 min in primary hepatocyte cultures isolated from this rat, which are studied after 1 or 2 days. The effective synchronization concentrations of melatonin--0.01-0.

[Melatonin promotes and synchronizes protein synthesis in hepatocyte culture from old rats].

The effect of 1 to 1000 nM melatonin was studied on daily cultures of rat hepatocytes on slides in serum-free medium. The minimum melatonin concentration (1 nM) proved to synchronize protein synthesis in asynchronous sparse cultures of hepatocytes from rats of different age, and a circahoralian rhythm of protein synthesis was revealed in them. In dense weekly synchronous hepatocytes from old rats (2.

[Signaling factors of self-organization of protein synthesis rhythm in hepatocyte cultures--gangliosides and catecholamines function independently].

Considering the data on the low level of self-organization (self-synchronization) of protein synthesis rhythm in aging, we studied the possible interference of the signaling factors of self-organization, gangliosides and catecholamines, as well as catecholamine reception. Experiments were carried out on primary cultures of rat hepatocytes on slides. Inhibited ganglioside synthesis did not prevent the organization of protein synthesis rhythm by the alpha-adrenomimetic agent phenylephrine.

Involvement of protein kinases in self-organization of the rhythm of protein synthesis by direct cell-cell communication.

Primary cultures of rat hepatocytes grown on slides were studied in serum-free medium. Ultradian protein synthesis rhythm was used as a marker of synchronization of individual oscillations, resulting in the formation of a common rhythm of the cell population, i.e.

[Mechanism of direct cell interactions. Self-organization of protein synthesis rhythm].

Primary 24-hour cultures of hepatocytes on slides in a serum-free medium were studied. Circahoralian rhythm of protein synthesis served as a marker of cell cooperation. Stimulation of protein kinase activities by phorbol 12-myristate 13-acetate at 0.

[Aftereffect of synchronizers of protein synthesis rhythm in hepatocytes in vitro].

The effect of gangliosides and phenylephrine synchronizing the protein synthesis rhythm was preserved in hepatocytes cultured in the normal serum-free medium for one-two days. Hence, the membrane signal triggers intracellular, as was shown by us earlier, calcium-dependent processes, which regulate the kinetics of protein synthesis for a certain time after the signal perception.