[The free radical oxidation and antioxidant defense systems as indicators of the activity of keratinocytic proliferation in psoriasis].

The free radical oxidation and antioxidant defense (AOD) systems in the keratinocyte cultures were studied in patients with psoriasis before and after the use of combinations of liposomal preparations. Hyperproliferation of keratinocytes was found to be attended by suppressed lipid peroxidation and high cell antioxidant activity. On the contrary, the liposomal combinations-induced suppression of cell proliferation was characterized by a drastic increase in prooxidant activity in reference to the AOD of epidermal keratinocyte cultures.

[The influence of partial androgen deficiency of aging men (PADAM) on the impulse regime of incretion of several hormones and mitotic activity].

This research work is devoted to an important subject--study of the impulse regime of the incretion of a series of hormones among men with partial androgen deficience of aging men (PADAM). The results of this study suggest that PADAM leads to a breakdown of the impulse regime of incretion of a series of hormones, including luteinizing hormone (LH), follicle stimulating hormone (FSH), and somatotropic hormones (STH), as well as cortisol and insulin among men of older age groups. These changes accompany the development of metabolic syndrome (X-syndrome); their development can be inversed through androgen-replacement therapy.

[Effect of testosterone concentration on the intensity of 5alpha-dihydrotestosterone and 17beta-oestradiol formation].

The culture of human male foreskin fibroblasts was incubated with various concentrations of testosterone in the medium. It has been shown that the minimum formation of 17beta-oestradiol and 5alpha-dihydrotestosterone occurs at physiological testosterone concentrations. Any deviation of testosterone concentration, both up and down, was accompanied by an increase in the formation of 17beta-oestradiol and 5alpha-dihydrotestosterone.

[Epithelial and stromal cell relation in peritumorous zone of the prostate gland cancer].

This article deals with an urgent topic--assessment of peculiar characteistics of epithelial-stromal interactions in prostate gland tissues outside the tumor growth zone. On demonstrating pre-cancerous changes, this zone can either further accompany or precede the development of malignant neoplasm. The authors have established suppression of general morpho-functional activity of histogematogenous barrier components, increase in degenerative changes in epithelium, both in the vicinity of the tumor, and at a distance from it, which is, most probably, caused by dishormonal changes.

[The glutathione-dependent antioxidant system in rats during acute intoxication by hydrazine].

Intensity of lipid peroxidation in the liver, kidney and brain tissues, and functioning of the glutathione system were studied in purebred rats after acute intoxication by 1.1-dimethyl hydrazine at the dose of 104.5 mg/kg of body mass (LD50) and phenyl hydrazine at the dose of 170 mg/kg of body mass (LD50).

[Role of heat-shock proteins in cardioprotection of patients operated on for ischemic heart disease].

Major stress protein HSP72 is known to participate in protecting cells and organisms against harmful factors including ischemia, trauma etc. Under study was the level of HSP72 in the myocardium of 32 patients with coronary disease operated in Military-medical academy. HSP72 was detected in probes of the right atria before and after pre-cardiopulmonary bypass in all cases induction of HSP72 was observed in 40% of patients, and directly correlated with the time of cardiopulmonary bypass and standing of the disease.

[Method for measuring glutathione system parameters in human lymphocytes].

The levels of reduced glutathion, activity of glutathion peroxidase, and glutathion S-transferase were measured in human peripheral blood mononuclears. The adapted methods permit measurements of glutathion system parameters in immunocompetent cells and can be used in patients with different immunopathological processes.

[Glutathione S-transferase P1-1 in normal and cancerous lung tissue: properties, function, and possible mechanisms for regulating activity].

Different forms of one of the enzymes catalyzing the xenobiotic metabolism, glutathione S-transferase P1-1 (GST P1-1), purified from normal and tumoral lung tissues, are described. Statistically significant (p < 0.05) increasing of enzyme activity in tumour, as compared with normal tissue, is shown.