[Selenium and oxidative stress in cancer patients].

In order to identify the features of violations of free-radical processes in blood serum of 94 untreated cancer patients with different localization of the tumor (cancer of the stomach, colon, breast, ovarian, hemoblastoses) were determined selenium levels and indicators of oxidative stress (sum of metabolites of nitrogen--NOx, the level of superoxide dismutase--Cu/ZnSOD and malondiialdehyde-MDA, and the activity of catalase). In addition, 40 patients with malignant liver disease and clinical signs of liver failure in the early postoperative period was carried out a comparative evaluation of the efficacy of selenium-containing drug "Selenaze" (sodium selenite pentahydrate). It was found that selenium levels in cancer patients by 25-30% below the norm of 110-120 mg/l at a rate of 73.

[Immunological indices in urolithiasis patients with secondary pyelonephritis].

The immunological status was studied in 335 patients with urolithiasis and pyelonephritis. The techniques used for assessment of the immunological status provided a multifactorial control over immune system function in inflammation and urolithiasis: registered a significant rise of the level of proinflammatory and anti-inflammatory mediators of the immune response (IL-1beta, IL-4, IL-6, TNF), of neutrophil metabolic activity with parallel suppression of neutrophil phagocytic and absorbing functions, inhibition of bactericidal activity of the serum, a significant fall in the number of mature T-lymphocytes (CD3+) and T-helpers (CD4+). The immune status indices in urolithiasis patients with secondary pyelonephritis are closely linked with clinico-laboratory manifestations of the inflammatory process and renal function.

[Genomic sequences in Drosophila melanogaster, homologous to mammalian oncogenes].

Drosophila melanogaster genomic sequences homologous to the mammalian oncogenes ras, src, jun, fos, ets, and wnt are considered. Their structure, expression, and functions are compared.