[Chronopharmacological approaches to the therapeutic prophylaxis of chronic cardiac insufficiency in type I diabetes mellitus].

The efficiency of the developed scheme for a drug prophylaxis of chronic cardiac insufficiency (CCI) in patients with diabetes mellitus I (DM I) of autoimmune genesis (subtype B) was evaluated; such scheme comprised the inhibitors of angiotensin converting enzyme (ACE) of different chemical structures and a biological response modifier (BRM)--glutoxime, which were prescribed with regard for a changed biological rhythm of hemodynamic as well as of metabolic and immune profiles of patients. The following parameters were examined: cardiohaemodynamics, the content of cortisol, insulin, ACTH, TTH and thyroxin in blood, of transport proteins and of the concentration of IL-1 and TNF-alpha in blood. It was established that the use of ramipril and fosinopril combined with the glutoxime BRM within the scheme of drug prophylaxis of CCI concomitant with DM I was accompanied by an effective removal of desynchronosis of the immune-endocrine system in the discussed category of patients.

[The mechanisms of action of ketamine].

The review systematizes the latest data on the main mechanisms of realization of some pharmacological properties of ketamine which are particularly valuable in the treatment of many diseases and conditions. The authors present the main aspects of the ketamine effect on the central mechanisms of anesthesia and hemodynamics and give the characteristics of its neuroprotective action. It is shown that these effects are realized also at the cost of the non-competitive blockade of the NMDA receptors in the central nervous system.

[The ultrastructural characteristics of the changes in sections of the rat brain under piracetam exposure].

Rat experiments have shown that intraperitoneal piracetam leads to formation of abundant coated vesicles in the neurons of the sensomotor cortex, hippocampus, and central gray matter. Concurrently, subsuperficial cisterns form under the plasmalemma of nerve cells. The interneuronal contacts are characterized by long-term excitation without destructive changes in synapses.

[Benzodiazepine receptors of the neurons and astrocytes].

Ultrastructural investigations of different parts of rat brain after diazepam administration revealed benzodiazepine receptors on the neuronal surface and plasma membrane of astrocytes of the sensorimotor cortex, hippocampus and central grey substance. Subsuperficial cisternae that replenish deficit of plasma membrane required for coated vesicles formation were only seen in the neurons and were absent from the astrocytes. The fate of internalized diazepam in the nerve and glial cells were different: in the neurons, ligand is destroyed in lysosomes and multivesicular bodies, while in the astrocytes, exceptionally in lysosomes.

[Ultrastructural basis of the effect of haloperidol on the brain].

It has been established in rat experiments that haloperidol administration gives rise to the formation of a great number of coated vesicles in the cytoplasm of the sensorimotor cortex, thalamus, hippocamp, and central grey matter as well as to lysosomal activation and appearance of subsurface cisternae. Besides, the movement of mitochondria to the neuronal processes is intensified. The karyotropic action of haloperidol manifests in an increase of the size and amount of nuclear pores and in activation of the nucleoli.

[Biosynthesis of biogenic pyrimidines in anxiety and depressive states of different etiologies].

Biosynthesis of endogenous pyrimidines was investigated in 37 patients with anxiety, anxious-depressive, depressive and hypochondriac syndromes emerging in schizophrenia and manic-depressive psychosis against a control group of healthy subjects (n-20) andopiate abusers (n-10). It was found that depressive and anxiety states in the examinees were associated with inhibition of endogenous pyrimidines synthesis likely to result in abnormal depression and anxiety levels.

[Pyrimidine derivatives: their psychotropic properties and the molecular mechanisms of their central action].

The data on the neuro- and psychotropic effects of exo- and endogenous derivatives of pyrimidine are systematized. Uridine is characterized as an endogenous anxiolytic and antidepressant and thimidine as uridine antagonist. The given properties are probably determined by the binding of pyrimidine nucleosides to GABA, benzodiazepine and imipramine receptors as well as by their influence on the neuromediator systems.

[Clinical evaluation of the antidepressive agent noveril].

Altogether 32 patients with different depressive states received noveril. The drug was administered in the doses of 180, 160, 240 and 320 mg in the first half of the day. Complete egress from the depressive state and considerable improvement were observed in 46% of the patients, slight improvement in 38% and no visible improvement was recorded in 16% of the patients.