Objective: to study the effect of nabumetone in oncogynecologic patients in the postoperative period. Materials and methods. There were examined 98 patients of 40-78 years old, who were divided into two groups: the main group - 58 patients, of which 37 - patients with endometrial cancer I-III and 21 - with ovarian cancer of II-IV stage (FIGO); The comparison group included 40 patients (17 and 23 patients respectively). All patients underwent surgical treatment. In the postoperative period, were used NSAIDs - nabumeton. Before the operation and on the 10th day of the postoperative period, the following parameters were studied: a clinical blood test, TNF-a, ceruloplasmin, diene conjugates (DC), malonic dialdehyde (MDA), antioxidant activity (AOA). The content of TNF-a, in the blood serum was determined by radioimmunological, and DC, MDA, AOA by biochemical method. Results. Established: the content of the leukocyte formula before the start of treatment in the compared groups did not reveal any significant differences. After surgical intervention, both groups showed an increase in the absolute values of all leukocyte fractions. The level of ceruloplasmin in the patients of the comparison group increased significantly in the postoperative period, and in the main group the parameters of ceruloplasmin did not differ significantly. The level of TNF-a in the pre- and postoperative period in the compared groups did not differ. On the 10th day of the postoperative period, it significantly increased in the comparison group, and when nabumetone was used during the postoperative period, the level of TNF-a did not increase. The initial indicators characterizing the processes of LPO and AOA in both groups did not differ significantly. Assessing the dynamics of indicators before and after the operation, it was noted that in patients in the blood, the level of DC in both the baseline and in the comparison group increased. The use of nabumethon led to a slight increase in DC. The maintenance MDA in the postoperative period has increased in both groups, however it is unreliable in comparison with parameters before surgical intervention. In the comparison group, after the treatment, the antioxidant defense was reliably reduced. In the main group, the use of nabumetone contributed to a smaller decrease in AOA. The use of nabumeton allowed abandoning of narcotic analgesics in earlier periods of the postoperative period. Conclusion. Use of nabumeton in the postoperative period allows to reduce the pain syndrome, the number of inflammatory complications; contributes to the normalization of LPO processes, inhibits the inhibition of the antioxidant system, which contributes to the reduction of endogenous intoxication and improves the results of treatment of oncogynecologic patients. Key words: nabumeton, oncogynecologic patients, anti-inflammatory action, tumor necrosis factor, ceruloplasmin, diene conjugates, malanialdehyde, antioxidant activity.

To estimate the MSI frequency in colonic mucosal lining and blood serum in patients with endometrial cancer (EC). Methods and results. In 342 patients aged 30-80 with stage I-IV endometrial cancer occurrence of microsatellite instability (MSI) in tumour tissue and blood serum was researched by means of the polymerase chain reaction method. It was established that without regard to carcinoma phenotype MSI this genetic phenomenon is determined signifi cantly more often in blood serum (10.8% of cases) than in colonic mucosal lining (6.1 % of cases). A similar pattern was observed in cases with tumour phenotype MSI+ (MSI frequency in colonic mucosal lining made 12.2%, whereas in blood serum -29.6%, p <0.01).Conclusion. In cases with tumour phenotype MSI-the genome microsatellite instability was observed more often in colonic mucosal lining (3.1%) than in blood serum (1.3%). MSI frequency in colon tissue was higher in EC patients with phenotypic characteristics and risk factors typical for hormone-dependent forms.