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Biomedical subjects

N B Kozlov

Publications and source records attributed to N B Kozlov.

15 recordsLinked to original sources
PubMed1990

[Vaseline protection of the skin from the effects of the sealant Uniherm-6].

The article presents a set of newly elaborated specific techniques of the indication of protective pastes and ointments penetrability into the sealants. The techniques are based on the sealant's colour reactions to iron chloride spirits solution. It was established that skin protecting silicone creams, EIR-1 and HIOT pastes were sealant resistant for 4-6 minutes only. Medicinal vaseline displayed its protection properties for 6 hours, thus demonstrating its greater effectiveness when used in industrial conditions.

Dermatitis, Occupational↗
PubMed1989

[Assessment of an extraction-photometric method of determining mercury in urine].

Experimental trials of the extraction photometry of the urine mercury have shown that this method is not sensitive enough to detect the mercury concentrations in human urine in health. Even if the mercury concentrations are detectable with this method, the results are unrepeatable because of the inadequacy of the extraction technique. This makes extraction photometry unacceptable for measuring the urine mercury concentrations at clinical laboratories.

Humans↗
PubMed1988

[Possibility of the neoplastic transformation of thyroid gland cells in the graft vs host reaction].

The experiments were carried out on 60 first generation hybrids. Acute systemic "graft-versus-host" reaction (GVHR) was induced in (CBA X C57B1/6) X 60 X 10(6) hybrids by intravenous administration of spleen cells from C57B1/6 parents. Thyroid glands were examined on the 3rd, 10th and 24th days of GVHR. Chronic GVHR was studied in accordance with routine model. (C57B1/6 X DBA/2) hybrids were given 50 X 10(6) spleen cells from DBA/2 parents. Thyroid glands were investigated 6 months after GVHR induction. On the 10th day of GVHR histological examination revealed that follicular-like adenoma tumours with pronounced cellular abnormalities tended to appear in thyroid gland. In a chronic form of GVHR the histological pattern corresponds to that of follicular cancer.

Adenoma↗
PubMed1977

[Indices of body resistance to overheating in the dynamics of acute radiation lesion].

Three hours after irradiation in a dose of 800 R rats proved to be less resistant to following overheating (45 degrees C) than control animals. An increase of resistance to acute overheating was revealed at the end of 3 days after the irradiation. At the height of the radiation disease (the end of the 5th day) the period of occurrence of heat stroke and the duration of rat survival failed to differ from those in the control animals. The dynamics of response to overheating correlated to some extent with that of the thyroid gland and the adrenal gland functions in the irradiated animals.

Acute Disease↗
PubMed1975

[Thyroid gland function in heatstroke].

Development of thermal stroke in rats with the action of high external temperature (45 degrees C) was accompanied by a reduction of accumulation of I131 in the thyroid gland, a fall in the protein-bound-iodine--I131 and in the amount of thyroxin in the peripheral blood plasma, and also by a fall in the rate of disappearance from the blood of Nal131 injected intravenously. A relative decrease of the content of mono- and particularly of diiodthyrosines, and also, slightly, of iodthyronines occurred in the trypsine hydrolyzates of the thyroid gland at the moment of the thermal stroke development.

Animals↗
PubMedDate not supplied

[The state of the erythrocyte antioxidant system during gamma irradiation following prior prolonged overheating].

A study was made of the influence of preliminary long-term heating on the state of the antioxidant system of erythrocytes after gamma-irradiation. The activity of antioxidant protection enzymes (catalase, superoxide dismutase, and glutathione peroxidase) in erythrocytes varied in different directions depending on the preliminary long-term overheating schedule and perhaps on the structure and intracellular localization of the enzyme.

Animals↗
PubMedDate not supplied

[Concentrations of protein sulfhydryl and amino groups in the brain during acute and chronic alcoholic intoxication].

The content of sulphydryl and amine groups in water- and salt- soluble proteins of different areas of the rat brain was studied as affected by acute and chronic alcohol intoxication. With a relatively unchanged content of sulphydryl groups, noticeable variations are observed in the level of amine groups, most pronounced in proteins of the intermediate and middle areas of the brain. Under chronic intoxication the greatest changes in the content of the functional groups occur on the fourth day after cessation of the alcohol administration, when changes in the clinical state of the animals are most pronounced. It is supposed that the found shifts are caused by an acetaldehyde reversible blockade of amino groups and by the conformation rearrangement of protein molecules.

Alcohol Deterrents↗
PubMedDate not supplied

[Influence of hyperthermia and protective effect of ionol and carbon dioxide gas on ATP, ADP and AMP content of the rat brain].

It is shown that the amount of ATP in rats under hypothermia up to heat stroke lowers and that of ADP and AMP somewhat rises. Ionol administration normalizes the ATP level and increases the ADP and AMP contents. Inhalation of CO2 and especially administration of ionol contribute to a higher resistance of the animals to hyperthermia.

Adenosine Diphosphate↗
PubMedDate not supplied

[Improved method for the quantitative determination of lipid hydroperoxides and the change in their content in the tissues on exposure of the body to a high external temperature].

A new procedure is developed for amperometric registration of the equivalence point in iodometric assay of lipid hydroperoxides. The procedure increased accuracy of the analysis. Content of lipid hydroperoxides was calculated by means of a new equation. Concentration of lipid hydroperoxides was studied using the new method both in tissues and blood of intact animals and in those of animals, which were subjected to the effect of high external temperature.

Adipose Tissue↗