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ENGLISH ABSTRACT
JOURNAL ARTICLE
[The activity of redox-regulatory systems in the primary and recurrence tumors in vulvar cancer].
Biomedit︠s︡inskai︠a︡ Khimii︠a︡ 2017 July
The activities of superoxide dismutase (SOD), catalase, glutathione peroxidase (GPx), glutathione reductase (GR), glutathione transferase (GST), the content of reduced glutathione (GSH) and malondialdehyde (MDA) were investigated in the samples of the tumor, peritumoral zone and healthy tissue, taken at the line of resection, were obtained from 14 patients with primary squamous cell carcinoma of the vulva, and 13 patients with local recurrence appeared in the period from 3 months to 7 years. by conventional spectrophotometric methods. The content of GSH and the activity of SOD, GPx, GR, GST were significantly increased, while MDA was decreased in the tissue of the primary carcinoma of the vulva in compared with the healthy tissue. Differences in the functioning of the investigated system of enzymes in the peritumoral zone were also revealed in the primary and recurrent tumoral process. Similar but much less pronounced changes were also observed in the recurrent tumor. It is suggested that such dynamics of activity of the studied system with the progression of cancer process can be the result of adaptation to changes in the local biochemical status of healthy (nonmalignant) tissue of the organ carrying the tumor and reflect the metabolic features of the recurrent tumor.
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