[Effect of radio-ecological conditions in the ChNPP exclusion zone on morphofunctional state and responsiveness of organs and tissues of laboratory animals].

The state of hematopoietic, reproductive and endocrine systems of the organisms of male rats and their offspring in generations (F0-F1-F2) was studied, and the sensitivity of an organism to the action of carcinogen (Af mice) after a stay in the ChNPP exclusion zone was analyzed. It was ascertained that the most significant changes of the morphofunctional state of the animals were observed in the II generation (F2), which remained for a long period under the conditions of radioactive contamination. We have revealed an increased number of leukocytes, neutrophils, lymphocytes, and, especially, monocytes as against while the decrease in the number of erythrocytes and haemoglobin content; the decrease of thyroid function and cortical layer of the adrenals as opposed to while the increase in the relative weight of testes and their epididymides and the decrease in the number of spermatocytes and spermatozoa in the testis tissue.

[The influence of ecological factors of Polesky State Radioecological Reserve on spontaneous and chemically induced mutagenesis and tumor formation].

The cycle of researches of the influence of an exposion of mice of line Af in the conditions of the zone of Chernobyl disaster on spontaneous and chemically induced mutability, lung tumour (adenomas), morphological and functional condition of alveolar macrophages, and also genetic effects in natural populations wild rodents is executed. The increase in polychromatic frequency in mouse bone marrow, adenomas in lungs, and change of sensitivity of an organism to action mutagen and transgenerational transfer of genetic damages is shown.

[Study of gustatory sensitivity to phenylthiocarbamide in thyroid diseases].

The aim of the study was to reveal a relationship between gustatory sensitivity to phenylthiocarbamide (PTC) and thyroid disease. The distribution of PTC sensitivity was studied in 198 healthy individuals, 100 patients with autoimmune thyroiditis (AIT), 139 patients with nodular euthyroid goiter, and 100 patients operated on for thyroid cancer. There was a statistically significant decrease in the number of PTC-resistant male and females patients in the thyroid cancer group and an increase in the proportion of PTC-resistant male patients in the AIT and nodular euthyroid goiter groups.

[Iodine metabolism and pathologic processes in the thyroid gland under radioiodine lesions in the regions of goitrous endemia].

An existing discrepancy between the prognostic estimations and real thyroid gland sickness rate due to radiation exposure from Chernobyl is an evidence of inaccuracy of radiation doses determination. The estimation of the thyroid cancer risks is based on the assumption that the absorbed dose is uniformly distributed in the organ. But functional asynchronicity specific for iodine metabolism in thyroid may modify a space distribution of the dose.

[Combined effect of gamma-irradiation and sodium nitrite on the oxidative sensitivity of rat hemoglobin].

gamma-Irradiation has been defined to increase in the rats blood the methemoglobin level providing for shortening the initiation phase and accelerates the autocatalytic phase initiation, reduces the period of half transforming hemoglobin into methemoglobin and increases the velocity of its oxidation. Alongside with the latter there is observed a violation of methemoglobin concentration growth dependence on the animals irradiation dose (in the range of 0.16-0.