[Comparison of the effectiveness of non-immunogenic staphylokinase and alteplase for intravenous thrombolysis in ischemic stroke: analysis of hospital registry data].

Objective: To compare the effectiveness and safety of the use of non-immunogenic staphylokinase (NS) and alteplase (AP) for intravenous thrombolysis (IT) for ischemic stroke (IS) in real clinical practice at a regional vascular center.

Material And Methods: Data from 100 patients with IS who received IT with NS and 100 patients who received IT with AP for the period 2022-2023 were analyzed. The groups were comparable on sociodemographic parameters, cardiovascular risk factors and diseases, and stroke characteristics.

[Changes of the EEG capacity observed in certain pathologies of the central nervous system and in pain].

Published data on changing spectra of electroencephalograms (EEG), as observed in different pathological hypoxic conditions (hypoxia, ischemia of the brain, aging) were analyzed; changing EEG spectra were experimentally studied in pain. The EEG changes were found to be identical in all cases. At the very beginning of a pathological factor onset, there was an increasing dominating peak of the EEG spectrum (or, the beta2-frequency range was going up--stage I).

[Neurophysiological analysis of the effects of antihypoxic versus psychotropic agents].

The Fourie EEG spectral analysis of thr sensomotor cortex and dorsal hypocampus in freely moving rats could reveal the common pharmacological EEG effects of different antihypoxic agents (gutimin, amtizole, emoxipine, and 3-OPK). All the agents decreased the total EEG power (they all reduced the absolute power in all frequency bands) and simultaneously enhanced (2 relative power. The former suggests that there was a decrease in the energetic level of bioelectric fluctuations, which may indicate that the brain reduces its energetic functioning level.

[Comparative quantitative pharmacological-EEG analysis of the effects of psychostimulants].

Amphetamine, caffeine, sydnocarb, meclofenoxate, adapromine, midantan, and nomifensine were studied for their effects on bioelectrical activity and Fourier EEG power spectra of the sensomotor cortex, dorsal hippocamp and lateral hypothalamus of freely behaving awake rats. The drop in the absolute power of all frequency ranges with the enhanced power of fast beta 1,2-ranges was common to the action of psychostimulants. In addition to the common properties, specific features of their action were revealed.

[A quantitative pharmaco-electroencephalographic analysis of the action of bromantane].

The action of the new stimulant bromantane on spectra power EEG on Fourier of sensorimotor cortex, dorsal hippocamp and lateral hypothalamus of left and right hemispheres of brain of rat in free behavior was investigated. Bromantane leads to decreases in the total and absolute powers of all frequency bands of EEG spectra, changes structural spectra in the cortex and in hippocamp--decreases the relative power of theta-band and increases the relative power of beta 1, 2-activity. The basic feature of bromantane's action is a two-phase effect (its maximum occurs 2-3 and 6-7 hours after administration), which remains up to 8 h of EEG recording.

[The effect of preparations with nootropic action when used long-term on the brain bioelectrical activity in rats].

The impact of prolonged injection of piracetam (2 months), meclophenoxate (5 months), and mexidole (5 months) on the bioelectrical activity of the sensomotor cortex and dorsal hippocamp was studied in rats who behaved freely. The injects increased and stabilized the predominant peak of EEC spectra power by the Fourier method. Discontinuation (24 hours) of piracetam failed to impair EEG spectra and bioelectrical activity.

[A spectral analysis of the effect of sidnocarb on the bioelectrical activity of the rat brain].

A quantitative pharmaco-EEG analysis of the action of psychostimulant drug sydnocarb and its solvent polyethylenglycol-400 on bioelectrical activity of sensomotor cortex, dorsal hippocamp and lateral hypothalamus of wakeful rats in free behavior was carried out. Polyethylenglycol-400 proved to affect CNS, as it decreases slow-wave activity and causes displacement of the dominant peak to the region of more slow-wave frequencies, shows anticonvulsant action. Sydnocarb reduces absolute power of all frequency ranges and increases relative power of fast activity.

[Spectral analysis of the effects of nomifensine on bioelectric activity of the rat brain].

The influence of nomifensine on bioelectrical activity of sensorimotor cortex, dorsal hippocamp and lateral hypothalamus in conscious rats in free behavior was studied. The pharmacological and EEG analysis of nomifensine action on EEG power spectra by Fourier technique was measured. It was established that nomifensine evoked an increase and stabilization of the dominant peak in EEG spectra in the left and right cortex and in the left hippocamp, while in the other ranges of frequency a decrease was observed.

[Effects of tranquilizing agents on bioelectrical activity of the rat brain].

The action of diazepam, meprobamate, trioxazine and mexidol on bioelectrical activity of sensorimotor cortex and dorsal hippocamp of the left and right hemisphere of the brain in conscious rat in free behavior has been studied. All the drugs produced a decline in the frequency of the dominant peak of EEG power spectra. Diazepam and meprobamate increased beta-activity.

[A spectral analysis of the effect of adapromine on brain bioelectrical activity].

A study was made of the influence of adapromine on bioelectrical activity of the brain, sensorimotor cortex, dorsal hippocamp and lateral hypothalamus in freely moving wakeful rats. Adapromine was established to evoke a decrease of the amplitude of the dominant peak and dominant theta-activity in power spectra of the EEG in the cortex and hippocamp, with an increase of rapid wave activity in the beta 2 range in the right cortex and hippocamp. These changes attained maximum after 1 to 1.

[The nooglutil correction of functional disorders of the central nervous system caused by prenatal alcoholization in rats].

Administration of ethanol (5 g/kg/day, per os) to the pregnant rats evoked delayed impairments of the learning and memory in the offspring. Prenatal alcoholization of the animals attenuated the habituation of the exploration behavior in open field, impaired acquisition and retention of active avoidance in a shuttle box, increased slow activity of the EEG spectrum power, disturbed the function of the serotoninergic system in the brain cortex and of the dopaminergic system in the hippocamp. The new nootropic drug nooglutyl (N-5/hydroxynicotinoyl/-L-glutamic acid) administered in a dose of 25 mg/kg/day from the 8th to the 20th day of life prevented the above-mentioned delayed disturbances of higher integrative functions and biochemical processes in rat brain.

[An electrophysiological study of the brain of rats with different resistances to oxygen deficiency in acute hypoxia].

The Fourier spectre of power (SP) and bioelectrical activity of the cortex, hippocampus and hypothalamus were studied in unrestrained rats with high (HR) and low (LR) resistance to oxygen deficiency before and after their stay at the "altitude" of about 11,000 m. After acute hypobaric hypoxia there were the EEG changes in LR rats: displacement of the SP peak in low-frequency activity and decreasing of absolute power of all the ranges of SP. In one hour after the "altitude", these EEG parameters were restored.

[L-pyroglutamyl-D-alanine amide normalizes the function of the developing brain damaged by antenatal alcoholization in rats].

The effects of the synthetic dipeptide, L-pyroglutamyl-D-alaninamide (LPDA) were studied in the experiments on offspring of alcoholized during the pregnancy (5 g/kg/day) females. This dipeptide, which revealed the nootropic activity in previous experiments, was injected to the pups in dose of 1 mg/kg from 8 to 19 days of life. LPDA was shown to prevent the delayed disturbances of learning in passive avoidance test, of extrapolatory behaviour in escape test, to attenuate the emotional hyperreactivity.

[Pharmacokinetic, behavioral and neurophysiological aspects of the action of 2-ethyl-6-methyl-3-hydroxypyridine in rats].

Specific features of 2-ethyl-6-methyl-3-hydroxypyridine (3-OP) action were investigated in white rats. A correlation has been established between pharmacokinetic parameters and basic manifestations of psychotropic 3-OP effect. Correlations have been also observed between the level of manifestation of anxiolytic effect and changes in 3-OP concentrations in the rat brain.

[Neurophysiological analysis of the correction by nootropic substances of disorders in the bioelectric activity of the brain in animals during chronic administration of ethanol].

The influence of some drugs (piracetam and 3-oxypyridine derivative) having a nootropic effect on ethanol-induced changes of bioelectrical activity was studied in experiments on freely moving rats. Discontinuation of ethanol administration (1, 2 g/kg, i.p.

[Comparative neurophysiological study of the nootropic drugs piracetam and centrophenoxine].

Effects of nootropic drugs on transcallosal evoked potential (TEP) and EEG spectra of the animal brain cortex and hippocamp were studied. It was found that piracetam and centrophenoxine exert similar effects on the amplitude of the primary TEP components, produce its increase and also a rise and stabilization of the predominant peak in distribution of EEG power spectrum that corresponds to the improvement of theta rhythm organization. The drugs exert different effects on the secondary positive TEP component; centrophenoxine induces a change in non-basic rhythm of EEG in rats.

[New aspects of the neurophysiological mechanism of the action of nootropic preparations].

The influence of nootropic drugs on EEG spectral power of the cortex and hippocamp was studied in resting rats. All these drugs had a specific action on EEG spectral power, causing an increase and stabilization of maximum basic distribution peak of the EEG spectral power. Such action may be attributed to better organization of rhythmic activity in theta-range.