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• W4386839684 abstract "Introduction. The proven significance of free radical disorders in oncopathology determines the relevance of their study in soft tissue sarcomas (STS), which are characterized by a tendency to recurrence and high mortality of patients. Aim. To study the indicators of free radical oxidation and antioxidant protection in blood lymphocytes in primary and recurrent STS, depending on the sex and age of patients. Materials and methods. In 51 patients with primary STS, T2bN0M0 (17 men and 34 women) and in 34 patients (14 men and 20 women) with relapses, the level of lipid peroxidation products – malondialdehyde and diene conjugates, activities of superoxide dismutase and glutathione peroxidase, total peroxidase activity, the level of reduced glutathione were studied by spectrophotometric methods. Patients were divided by age: ≤45 years and >45 years. The comparison groups (donors) consisted of 12 men and 17 women divided into the same age subgroups. Results. In men >45 years old with primary sarcomas, there was an increase in diene conjugates by 2.2 times, with relapses by 2.4 times, and in young men - only with relapses by 2.6 times. The level of malondialdehyde in men did not change with primary sarcomas, with relapses it was reduced in both age groups by 2.4–2.6 times. In women with primary STS, there was an increase in most of the studied parameters in both age groups by 1.6–1.9 times. The increase in diene conjugates level and superoxide dismutase activity was the most pronounced (>3 times) in patients of the older age group. The increase in glutathione peroxidase activity in primary STS in young women was 2.3 times, and in the older age group in patients of both sexes it was 5 times. In half of the women with relapses developed no earlier than 3 years after treatment, a decrease in both lipid peroxidation products by 2.6–3.4 times was found, and in all women almost 4-fold activation of superoxide dismutase and 8-fold glutathione peroxidase with an increase in the level of reduced glutathione by 7 times took place, which was significantly higher than in men. For women of the older age group, a 3-fold increase in the ratio of superoxide dismutase/total peroxidase activity is characteristic for primary STS and almost 5-fold for recurrence. Conclusion. In primary STS, the activation of lipid peroxidation products and antioxidant enzymes in women is more pronounced than in men. Changes in most indicators are more typical for patients of older age groups, in which relapse was accompanied by a decrease in malondialdehyde in patients of both sexes and maximum activation of superoxide dismutase and glutathione peroxidase in women." @default.
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• W4386839684 date "2023-09-14" @default.
• W4386839684 modified "2023-10-01" @default.
• W4386839684 title "Redox status of blood lymphocytes in patients with soft tissue sarcomas" @default.
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• W4386839684 doi "https://doi.org/10.17650/2782-3687-2023-15-3-21-33" @default.
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