6 research outputs found

    P127

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    To determine diagnostic importance of DNA methylation in patients with chronic atrophic gastritis and induction of β€œCorrea” cascade for gastric cancer prevention. Material and methods: This present study included 80 patients with chronic atrophic gastritis associated with Helicobacter pylori. Diagnoses were confirmed by endoscopic, morphologic, serologic examinations. Age of patients varied from 17 to 78 years old. There were 52 (65%) males and 28 (35%) females. The control group consisted of 32 patients with morphological verified diagnosis of stage I–II gastric cancer. Examination with the purpose to determine hypermethylation of DNA was performed simultaneously in biopsy materials and blood plasma. Provoking factors of hypermethylation in 4 tumors’ genes, APE, E-Cadherin, T1MP3, hMLHI were determined by quantitative methylation with use of Polymerase Chain Reaction. To evaluate the level of methylation we compared the analysis’ results of biopsy and blood plasma tests. Blood serum samples and biopsy specimens were collected at diagnosis until the therapy is started. All patients with chronic atrophic gastritis infected with H. pylori underwent anti-H. pylori therapy according to the protocol. Chronic atrophic gastritis was found at morphologic examination in 40 (50%) patients according to β€œCorrea” cascade. 36 (45%) patients had intestinal metaplasia, and 4 (5%) patients had dysplasia. Reaction was considered to be positive in cases, when the level of methylation in genes listed above was higher in blood serum than in biopsy materials. Results: High concentrations of methylated APE, T1MP3 and hMLIH in genes were found in blood serum of 8 (10%) patients. In the control group, all 32 patients with gastric cancer had high methylation level in blood serum. In the remaining 72 (90%) patients, no high concentration of DNA methylation was found. After the 2-nd course of anti-H. pylori therapy, patients underwent morphologic and endoscopic examinations according to the protocol. Eradication of H. pylori was determined in 86% patients who received therapy. Intestinal metaplasia decreased from 45% to 25% (20 patients). Mild dysplasia was found in 1.2% of cases. Repeated analysis of methylation level showed its decrease after anti-H. pylori therapy in 4 (50%) out of 8 patients. Conclusion: Genetic tests show that DNA methylation in patients with chronic atrophic gastritis has high diagnostic importance. Anti-H. pylori therapy at the different stages of β€œCorrea” cascade has high level of induction in transforming into non invase gastric cancer

    P127

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    Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ Π½Π΅ΠΎΠ°Π΄ΡŠΡŽΠ²Π°Π½Ρ‚Π½ΠΎΠΉ Ρ…ΠΈΠΌΠΈΠΎΠ»ΡƒΡ‡Π΅Π²ΠΎΠΉ Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… мСстно-распространСнным Ρ€Π°ΠΊΠΎΠΌ прямой кишки. Π‘Ρ€Π°Π²Π½ΠΈΡ‚Π΅Π»ΡŒΠ½Π°Ρ ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ Ρ€Π΅ΠΆΠΈΠΌΠΎΠ² гипофракционирования ΠΈ классичСского фракционирования

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    Objective: comparison of the effectiveness of the results of neoadjuvant chemoradiotherapy in patients with locally advanced rectal cancer using classical and hypofractionated schedule of radiation therapy.Materials and methods. This study is based on a retrospective analysis of a database of patients with locally advanced rectal cancer (T3C–D, positive circumferential resection margin or T4) who underwent a prolonged course of neoadjuvant chemoradiotherapy followed by surgery. The patients were divided into two groups: the first (main) group, 71 patients who received a course of chemoradiotherapy in hypofractionation schedule as part of neoadjuvant treatment (4 Gy Γ— 40 Gy, 3 fractions per week) in combination with chemotherapy with capecitabine 1650 mg / m2 in two doses on weekdays. The second group (control group) included 79 patients who treated with long-course chemoradiotherapy in the classic fractionation mode (2 Gy Γ— 50–58 Gy, 5 fractions per week) in combination with chemotherapy with capecitabine 1650 mg / m2 in two doses on weekdays. In the preoperative period, along with chemoradiotherapy, 4–8 courses of the systemic chemotherapy in the CapOx mode was used. The primary endpoint of this study was pathological complete response. Secondary endpoints included the seve rity of early radiation and hematological toxicity, the incidence of local recurrence, distant metastases, overall and disease-free survival. Results. The study included 150 patients. The overall frequency of acute radiation toxicity of grade III–IV was 5.6 % in the main group and 8.9 % in the control group (p = 0.658), from them hematological toxicity – 2.82 % and 7.6 %, respectively (p = 0.350), skin and pelvic organ toxicity – 2.82 % and 1.3 %, respectively (p = 0.926). Complete pathological response of III degree in the groups achieved 22.5 % and 19 %, respectively (p = 0.593), grade IV – 18.3 % and 15.2 %, respectively (p = 0.829). In the main and control groups, 4.2 % and 3.8 % of local recurrence were registered, respectively (p = 0.954; hazard ratio (HR) 1.05; 95 % confidence interval (CI) 0.21–5.22). The median time of disease-free survival was 39.4 months. The three-year disease-free survival in the main group was 73.2 % and in the control group 64.6 %, respectively (p = 0.353; HR 0.79; 95 % CI 0.42–1.35). The three-year overall survival in the main and control groups were 84.5 % and 82.3 %, respectively (p = 0.743; HR 0.87; 95 % CI 0.39–1.92). Conclusions. The hypofractionation schedule can be considered as an alternative and not inferior to the standard dose fractionation regimen in a prolonged course of neoadjuvant chemoradiotherapy in patients with locally advanced rectal cancer. ЦСль исслСдования – сравнСниС эффСктивности Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² Π½Π΅ΠΎΠ°Π΄ΡŠΡŽΠ²Π°Π½Ρ‚Π½ΠΎΠΉ Ρ…ΠΈΠΌΠΈΠΎΠ»ΡƒΡ‡Π΅Π²ΠΎΠΉ Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… мСстно-распространСнным Ρ€Π°ΠΊΠΎΠΌ прямой кишки ΠΏΡ€ΠΈ использовании классичСского ΠΈ Π³ΠΈΠΏΠΎΡ„Ρ€Π°ΠΊΡ†ΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ Ρ€Π΅ΠΆΠΈΠΌΠ° Π»ΡƒΡ‡Π΅Π²ΠΎΠΉ Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ. ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. Π Π°Π±ΠΎΡ‚Π° основана Π½Π° рСтроспСктивном Π°Π½Π°Π»ΠΈΠ·Π΅ Π±Π°Π·Ρ‹ Π΄Π°Π½Π½Ρ‹Ρ… Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… мСстно-распространСнным Ρ€Π°ΠΊΠΎΠΌ прямой кишки (T3C–D, ΠΏΠΎΠ»ΠΎΠΆΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ циркулярный ΠΊΡ€Π°ΠΉ Ρ€Π΅Π·Π΅ΠΊΡ†ΠΈΠΈ Π»ΠΈΠ±ΠΎ T4), ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΌ Π±Ρ‹Π» ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ ΠΏΡ€ΠΎΠ»ΠΎΠ½Π³ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹ΠΉ курс Π½Π΅ΠΎΠ°Π΄ΡŠΡŽΠ²Π°Π½Ρ‚Π½ΠΎΠΉ Ρ…ΠΈΠΌΠΈΠΎΠ»ΡƒΡ‡Π΅Π²ΠΎΠΉ Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ с ΠΏΠΎΡΠ»Π΅Π΄ΡƒΡŽΡ‰ΠΈΠΌ ΠΎΠΏΠ΅Ρ€Π°Ρ‚ΠΈΠ²Π½Ρ‹ΠΌ Π²ΠΌΠ΅ΡˆΠ°Ρ‚Π΅Π»ΡŒΡΡ‚Π²ΠΎΠΌ. ΠŸΠ°Ρ†ΠΈΠ΅Π½Ρ‚Ρ‹ Π±Ρ‹Π»ΠΈ Ρ€Π°Π·Π΄Π΅Π»Π΅Π½Ρ‹ Π½Π° 2 Π³Ρ€ΡƒΠΏΠΏΡ‹: 1-ю (ΠΎΡΠ½ΠΎΠ²Π½ΡƒΡŽ) Π³Ρ€ΡƒΠΏΠΏΡƒ (n = 71) составили ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚Ρ‹, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΌ Π² Ρ€Π°ΠΌΠΊΠ°Ρ… Π½Π΅ΠΎΠ°Π΄ΡŠΡŽΠ²Π°Π½Ρ‚Π½ΠΎΠ³ΠΎ лСчСния Π±Ρ‹Π» Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ курс Ρ…ΠΈΠΌΠΈΠΎΠ»ΡƒΡ‡Π΅Π²ΠΎΠΉ Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ Π² Ρ€Π΅ΠΆΠΈΠΌΠ΅ гипофракционирования (разовая очаговая Π΄ΠΎΠ·Π° 4 Π“Ρ€, суммарная очаговая Π΄ΠΎΠ·Π° 40 Π“Ρ€, 3 Ρ„Ρ€Π°ΠΊΡ†ΠΈΠΈ Π² нСдСлю) Π² ΠΊΠΎΠΌΠ±ΠΈΠ½Π°Ρ†ΠΈΠΈ с Ρ…ΠΈΠΌΠΈΠΎΡ‚Π΅Ρ€Π°ΠΏΠΈΠ΅ΠΉ ΠΊΠ°ΠΏΠ΅Ρ†ΠΈΡ‚Π°Π±ΠΈΠ½ΠΎΠΌ 1650 ΠΌΠ³ / ΠΌ2 Π² 2 ΠΏΡ€ΠΈΠ΅ΠΌΠ° Π² Π±ΡƒΠ΄Π½ΠΈΠ΅ Π΄Π½ΠΈ. Π’ΠΎ 2-ю (ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½ΡƒΡŽ) Π³Ρ€ΡƒΠΏΠΏΡƒ Π±Ρ‹Π»ΠΎ Π²ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΎ 79 ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠ², ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΌ Π±Ρ‹Π» ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ курс Ρ…ΠΈΠΌΠΈΠΎΠ»ΡƒΡ‡Π΅Π²ΠΎΠΉ Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ Π² Ρ€Π΅ΠΆΠΈΠΌΠ΅ классичСского фракционирования (разовая очаговая Π΄ΠΎΠ·Π° 2 Π“Ρ€, суммарная очаговая Π΄ΠΎΠ·Π° 50–58 Π“Ρ€, 5 Ρ„Ρ€Π°ΠΊΡ†ΠΈΠΉ Π² нСдСлю) Π² ΠΊΠΎΠΌΠ±ΠΈΠ½Π°Ρ†ΠΈΠΈ с Ρ…ΠΈΠΌΠΈΠΎΡ‚Π΅Ρ€Π°ΠΏΠΈΠ΅ΠΉ ΠΊΠ°ΠΏΠ΅Ρ†ΠΈΡ‚Π°Π±ΠΈΠ½ΠΎΠΌ 1650 ΠΌΠ³ / ΠΌ2 Π² 2 ΠΏΡ€ΠΈΠ΅ΠΌΠ° Π² Π±ΡƒΠ΄Π½ΠΈΠ΅ Π΄Π½ΠΈ. Π’ ΠΏΠ΅Ρ€ΠΈΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΌ ΠΏΠ΅Ρ€ΠΈΠΎΠ΄Π΅ наряду с Ρ…ΠΈΠΌΠΈΠΎΠ»ΡƒΡ‡Π΅Π²ΠΎΠΉ Ρ‚Π΅Ρ€Π°ΠΏΠΈΠ΅ΠΉ ΠΏΡ€ΠΈΠΌΠ΅Π½ΡΠ»Π°ΡΡŒ систСмная химиотСрапия ΠΏΠΎ схСмС CapOx 4–8 курсов. Основной ΠΎΡ†Π΅Π½ΠΈΠ²Π°Π΅ΠΌΡ‹ΠΉ ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»ΡŒ – Π»Π΅Ρ‡Π΅Π±Π½Ρ‹ΠΉ ΠΏΠ°Ρ‚ΠΎΠΌΠΎΡ€Ρ„ΠΎΠ· (ΠΏΠΎ Dworak). Π”ΠΎΠΏΠΎΠ»Π½ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Π΅ ΠΎΡ†Π΅Π½ΠΈΠ²Π°Π΅ΠΌΡ‹Π΅ ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»ΠΈ: ΡΡ‚Π΅ΠΏΠ΅Π½ΡŒ тяТСсти Ρ€Π°Π½Π½ΠΈΡ… Π»ΡƒΡ‡Π΅Π²Ρ‹Ρ… ΠΏΠΎΠ²Ρ€Π΅ΠΆΠ΄Π΅Π½ΠΈΠΉ ΠΈ гСматологичСской токсичности, частота развития мСстных Ρ€Π΅Ρ†ΠΈΠ΄ΠΈΠ²ΠΎΠ², ΠΎΡ‚Π΄Π°Π»Π΅Π½Π½Ρ‹Ρ… мСтастазов, общая ΠΈ бСзрСцидивная Π²Ρ‹ΠΆΠΈΠ²Π°Π΅ΠΌΠΎΡΡ‚ΡŒ. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. Π’ исслСдованиС Π²ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΎ 150 ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠ². ΠžΠ±Ρ‰Π°Ρ частота Ρ€Π°Π½Π½Π΅ΠΉ Π»ΡƒΡ‡Π΅Π²ΠΎΠΉ токсичности III ΠΈ IV стСпСни тяТСсти составила 5,6 % Π² основной Π³Ρ€ΡƒΠΏΠΏΠ΅ ΠΈ 8,9 % Π² ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½ΠΎΠΉ Π³Ρ€ΡƒΠΏΠΏΠ΅ (Ρ€ = 0,658), ΠΈΠ· Π½ΠΈΡ… частота гСматологичСской токсичности – 2,82 ΠΈ 7,6 % соотвСтствСнно (Ρ€ = 0,350), частота токсичности со стороны ΠΊΠΎΠΆΠΈ ΠΈ смСТных ΠΎΡ€Π³Π°Π½ΠΎΠ² ΠΌΠ°Π»ΠΎΠ³ΠΎ Ρ‚Π°Π·Π° – 2,82 ΠΈ 1,3 % соотвСтствСнно (Ρ€ = 0,926). Π›Π΅Ρ‡Π΅Π±Π½Ρ‹ΠΉ ΠΏΠ°Ρ‚ΠΎΠΌΠΎΡ€Ρ„ΠΎΠ· III стСпСни Π² 1-ΠΉ ΠΈ 2-ΠΉ Π³Ρ€ΡƒΠΏΠΏΠ°Ρ… достигнут Π² 22,5 ΠΈ 19 % случаСв соотвСтствСнно (p = 0,593), Π»Π΅Ρ‡Π΅Π±Π½Ρ‹ΠΉ ΠΏΠ°Ρ‚ΠΎΠΌΠΎΡ€Ρ„ΠΎΠ· IV стСпСни – Π² 18,3 ΠΈ 15,2 % случаСв соотвСтствСнно (p = 0,829). Π’ основной ΠΈ Π² Π³Ρ€ΡƒΠΏΠΏΠ΅ контроля зарСгистрировано 4,2 ΠΈ 3,8 % Ρ€Π΅Ρ†ΠΈΠ΄ΠΈΠ²ΠΎΠ² соотвСтствСнно (p = 0,954; ΠΎΡ‚Π½ΠΎΡˆΠ΅Π½ΠΈΠ΅ рисков (ОР) 1,05; 95 % Π΄ΠΎΠ²Π΅Ρ€ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ ΠΈΠ½Ρ‚Π΅Ρ€Π²Π°Π» (Π”Π˜) 0,21–5,22). МСдиана Π²Ρ€Π΅ΠΌΠ΅Π½ΠΈ Π±Π΅Π· прогрСссирования Π² ΠΎΠ±Ρ‰Π΅ΠΉ Π²Ρ‹Π±ΠΎΡ€ΠΊΠ΅ составила 39,4 мСс. ΠŸΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»ΡŒ 3-Π»Π΅Ρ‚Π½Π΅ΠΉ выТиваСмости Π±Π΅Π· прогрСссирования Π² основной Π³Ρ€ΡƒΠΏΠΏΠ΅ составил 73,2 %, Π° Π² Π³Ρ€ΡƒΠΏΠΏΠ΅ контроля – 64,6 % (p = 0,353; ОР 0,79; 95 % Π”Π˜ 0,42–1,35), ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»ΡŒ 3-Π»Π΅Ρ‚Π½Π΅ΠΉ ΠΎΠ±Ρ‰Π΅ΠΉ выТиваСмости – 84,5 ΠΈ 82,3 % Π² основной ΠΈ ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½ΠΎΠΉ Π³Ρ€ΡƒΠΏΠΏΠ°Ρ… соотвСтствСнно (p = 0,743; ОР 0,87; 95 % Π”Π˜ 0,39–1,92). Π’Ρ‹Π²ΠΎΠ΄Ρ‹. Π’Π°ΠΊΠΈΠΌ ΠΎΠ±Ρ€Π°Π·ΠΎΠΌ, Ρ€Π΅ΠΆΠΈΠΌ гипофракционирования ΠΌΠΎΠΆΠ΅Ρ‚ Ρ€Π°ΡΡΠΌΠ°Ρ‚Ρ€ΠΈΠ²Π°Ρ‚ΡŒΡΡ ΠΊΠ°ΠΊ Π°Π»ΡŒΡ‚Π΅Ρ€Π½Π°Ρ‚ΠΈΠ²Π½Ρ‹ΠΉ ΠΈ Π½Π΅ ΡƒΡΡ‚ΡƒΠΏΠ°ΡŽΡ‰ΠΈΠΉ стандартному Ρ€Π΅ΠΆΠΈΠΌΡƒ фракционирования Π΄ΠΎΠ·Ρ‹ Π² ΠΏΡ€ΠΎΠ»ΠΎΠ½Π³ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΌ курсС Π½Π΅ΠΎΠ°Π΄ΡŠΡŽΠ²Π°Π½Ρ‚Π½ΠΎΠΉ Ρ…ΠΈΠΌΠΈΠΎΠ»ΡƒΡ‡Π΅Π²ΠΎΠΉ Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… мСстнораспространСнным Ρ€Π°ΠΊΠΎΠΌ прямой кишки.
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