Бібліотека Вінницького національного медичного університету ім. М.І.Пирогова

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To the thirties anniversary of the independence of Ukraine priorities in cancer research: retrospective and prospective aspects // Experimental Oncology. - 2021. - Том 43, N 3. - P194-196

MeSH-главная:
ОНКОЛОГИЯ МЕДИЦИНСКАЯ -- MEDICAL ONCOLOGY (тенденции)
УКРАИНА -- UKRAINE
Аннотация: The landmark events in the formation and development of the society inspire us to analyze the achievements and unravel the problems hampering the civilizational progress in the spheres of human activities aimed at the realization of the creative essence of humankind. Irrespective of the differences inherent in science and public policy as separate domains of human activities, the present-day challenges such as COVID pandemic require joint efforts of the power and the science in the interests of the people. Nevertheless, even in the extraordinary situation with COVID pandemic we should continue our efforts exploring the fundamentals of cancer growth. Moreover, the possible remote consequences of COVID pandemic should not be overlooked
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Influence of bacterial lectin on key regulatory links of functional activity of macrophages in mice with Ehrlich carcinoma / A. V. Chumak [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P197-203

MeSH-главная:
КАРЦИНОМА, ЭРЛИХА ОПУХОЛЬ -- CARCINOMA, EHRLICH TUMOR (лекарственная терапия)
ИММУНОТЕРАПИЯ -- IMMUNOTHERAPY (использование, методы)
МАКРОФАГИ -- MACROPHAGES (действие лекарственных препаратов)
ЭУКАРИОТЫ -- EUKARYOTA
Аннотация: Recent studies have shown the potential of using different approaches for immunotherapy in cancer treatment. Macrophages (Mph) are one of the promising targets for immunotherapy. Aim: To investigate changes in the functional activity of Mph in mice with Ehrlich carcinoma by nitric oxide (NO)/arginase (Arg), IRF4/IRF5 and STAT1/STAT6 ratios caused by administration of lectin from B. subtilis IMV-7724. Materials and Methods: From the 2nd day after Ehrlich carcinoma inoculation into female Balb/c mice, lectin from B. subtilis IMV B-7724 (0.02 mg/mouse) was administered for 10 days. The peritoneal Mph were isolated on days 14, 21, and 28 after tumor transplantation and their functional state (NO production, Arg activity and cytotoxic activity) was examined. The levels of mRNA expression of transcription factors STAT-1, STAT-6, IRF5, IRF4 were evaluated. Results: In lectin-treated animals with Ehrlich carcinoma, the functional state of Mph (NO/Arg ratio, index of cytotoxic activity) was maintained at the level of intact mice exceeding the values in untreated animals with Ehrlich carcinoma at late terms of tumor growth (21, 28 days). Analysis of mRNA expression levels of transcription factors in these animals showed a significant increase (p 0.05) in the ratio of STAT1/STAT6 on the day 21 and IRF5/IRF4 on day 28 of tumor growth compared to that in untreated mice. Conclusions: Administration of lectin from B. subtilis IMV B-7724 to mice with Ehrlich carcinoma led to the prevalence of Mph exhibiting the functional properties of M1 type at late-term tumor growth. The transcription factors of the STAT and IRF signaling pathways are involved in the process of Mph polarization induced by lectin from B. subtilis IMV B-7724
Доп.точки доступа:
Chumak, A. V.
Fedosova, N. I.
Shcherbina, V. M.
Cheremshenko, N. L.
Karaman, O. M.
Chekhun, V. F.

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Expression pattern of MRPS 18 family genes in gliomas / L. M. Kovalevska [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P204-208

MeSH-главная:
ГЕННАЯ ЭКСПРЕССИЯ -- GENE EXPRESSION
ГЛИОМА -- GLIOMA (генетика, диагностика)
ГЛИОБЛАСТОМА -- GLIOBLASTOMA (генетика, диагностика)
БИОЛОГИЯ КОМПЬЮТЕРНАЯ -- COMPUTATIONAL BIOLOGY (методы)
Аннотация: To assess expression patterns of MRPS18 family genes in glioblastoma tissues and glioma cell lines. Materials and Methods: Expression of MRPS18 family genes was analyzed by quantitative polymerase chain reaction in glioma cell lines and glioblastoma specimens. A bioinformatic analysis of the publicly available data on the expression of these genes was also provided. Results: The genes of MRPS18 family show different expression patterns in glioblastomas and glioma cell lines. The highest levels of expression were found for MRPS18-2 at mRNA and protein levels in both glioblastomas and glioma cell lines; the lowest — for MRPS18-1 at mRNA level. Conclusions: The elevated levels of relative expression of the MRPS18-2 gene are characteristic for glioma tumor tissues and cell lines
Доп.точки доступа:
Kovalevska, L. M.
Malysheva, T. A.
Kalman, S. S.
Rozumenko, A. V.
Verbova, L. V.
Rozumenko, V. D.
Kashuba, E. V.

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A nutrient mixture reduced tumor growth of SK-UT-1 human leiomyosarcoma cells IN VIVO and IN VITRO by inhibiting MMPS and inducing apoptosis / M. W. Roomi [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P209-216

MeSH-главная:
ЛЕЙОМИОСАРКОМА -- LEIOMYOSARCOMA (лекарственная терапия)
МАТКИ НОВООБРАЗОВАНИЯ -- UTERINE NEOPLASMS (лекарственная терапия)
МАТРИКСА МЕТАЛЛОПРОТЕИНАЗЫ -- MATRIX METALLOPROTEINASES (действие лекарственных препаратов)
КЛЕТКИ ДЕЛЕНИЕ -- CELL DIVISION (действие лекарственных препаратов)
ЭКСПЕРИМЕНТЫ НА ЖИВОТНЫХ -- ANIMAL EXPERIMENTATION
Аннотация: Uterine leiomyosarcoma is a rare malignant smooth muscle tumor originating in the uterine wall that generally responds poorly to chemotherapy and radiation. Aim: We investigated the in vitro effects of a novel nutrient mixture containing lysine, proline, ascorbic acid, and green tea extract on the human leiomyosarcoma cell line SK-UT-1 by measuring cell proliferation, invasiveness, apoptosis, and expression of matrix metalloproteinases (MMP). We also tested the effects of nutrient mixture in vivo using nude mice. Materials and Methods: Human leiomyosarcoma SK-UT-1 cells were treated with different concentrations of nutrient mixture. Cell proliferation was determined by MTT assay; MMP expression by gelatinase zymography; invasion by Matrigel assay; migration by scratch test; apoptosis using Live Green caspase kit. In vivo studies were conducted on 5–6 weeks old female nude mice inoculated subcutaneously with 3 • 106 SK-UT-1 cells. The mice were fed a regular diet or a diet supplemented with 0.5% nutrient mixture. After four weeks, the mice were sacrificed and the tumors were weighed and processed for histology. Results: In vitro, nutrient mixture treatment was not toxic to SK-UT-1 cells at 250 µg/ml but exhibited 20% and 40% cytotoxicity at 500 and 1000 µg/ml respectively. Zymography did not show bands for either MMP-2 or MMP-9 in SK-UT-1 cells. However, treatment with phorbol myristate acetate stimulated the expression of MMP-9, both active and inactive forms in equal proportion. Nutrient mixture inhibited the secretion of both active and inactive forms in a dose dependent manner. Invasion through Matrigel and migration by scratch test were inhibited in a dose dependent fashion, with both invasion and migration inhibited at 250 µg/ml. Live Green Caspase apoptosis assay demonstrated slight apoptosis at 100 µg/ml and significant apoptosis at 250 to 1000 µg/ml. The results of in vitro studies were further confirmed in vivo by showing 50% decrease in tumor weight, 40% reduction in tumor burden compared to the tumors from mice fed regular diet. Conclusion: The results suggest a therapeutic potential for nutrient mixture in uterine leiomyosarcoma treatment
Доп.точки доступа:
Roomi, M. W.
Bhanap, B.
Niedzwiecki, A.
Rath, M.

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Magnetically sensitive nanocomplex enhances antitumor efficacy of dendritic cell-based immunotherapy / N. Khranovska [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P217-223

MeSH-главная:
ДЕНДРИТНЫЕ КЛЕТКИ -- DENDRITIC CELLS
НАНОЧАСТИЦЫ МЕТАЛЛОВ -- METAL NANOPARTICLES (терапевтическое применение)
ИММУНОТЕРАПИЯ АКТИВНАЯ -- IMMUNOTHERAPY, ACTIVE (использование, методы)
ПРОТИВООПУХОЛЕВЫЕ СРЕДСТВА -- ANTINEOPLASTIC AGENTS (терапевтическое применение)
САРКОМА -- SARCOMA (лекарственная терапия)
ЭУКАРИОТЫ -- EUKARYOTA
Аннотация: One of the major factors restricting in vivo efficacy of dendritic cells (DCs) based immunotherapy is the inefficient migration of these cells to the lymphoid tissue, wherein DCs activate antigen-specific T cells. A fundamentally new approach for the possibility of enhancing the antitumor effects of DC-based immunotherapy may be the use of magnetically sensitive nanocomplexes to increase the target delivery of DCs to the lymph nodes of the recipient. Aim: To study the antitumor and immunomodulatory effects of the DC-nanovaccine with magnetosensitive properties and its influence on the immunosuppressive tumor microenvironment in mice with sarcoma 37. Materials and Methods: The antitumor, antimetastatic and immunomodulatory effects of DCs loaded with magnetic nanocomplex under magnetic field (MF) control in mice with sarcoma 37 have been investigated. Results: Combined therapy contributed to a significant reduction in tumor volume and weight compared to the control group of mice and mice that received the DC vaccine without MF. Therapy with magnetically sensitive DC nanovaccine with and without the addition of the MF was accompanied by a significant down-regulation of the level of FoxP3, transforming growth factor β, interleukin (IL)-10 and vascular endothelial growth factors, mRNA expression in tumor tissues. A significant increase in interferon-γ and IL-4 mRNA expression was found in mice treated with the magnetically sensitive DC nanovaccine under MF control. Conclusion: A significant increase in the antitumor efficacy of the DC vaccine can be achieved using magnetosensitive nanocarriers of tumor antigens under MF control
Доп.точки доступа:
Khranovska, N.
Shachkova, O.
Gorbach, O.
Inomistova, M.
Orel, V.

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Association of lipoprotein lipase expression with TP53 gene polymorphisms in chronic lymphocytic leukemia cells / I. Abramenko [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P224-228

MeSH-главная:
ЛЕЙКОЗ ЛИМФОЦИТАРНЫЙ ХРОНИЧЕСКИЙ B-КЛЕТОЧНЫЙ -- LEUKEMIA, LYMPHOCYTIC, CHRONIC, B-CELL (генетика, диагностика)
ПОЛИМОРФИЗМ ГЕНЕТИЧЕСКИЙ -- POLYMORPHISM, GENETIC
ЛИПОПРОТЕИНЛИПАЗА -- LIPOPROTEIN LIPASE
МУТАЦИЯ -- MUTATION
Аннотация: Expression of lipoprotein lipase (LPL) correlates with unmutated (UM) status of the variable region of the heavy chain of immunoglobulin (IGHV) genes, but the expression level of LPL in UM chronic lymphocytic leukemia (CLL) cases varies significantly. Aim: To study the association of LPL expression with the genetic variants of the TP53 gene since both genes are involved in lipid metabolism. Materials and Methods: Expression of LPL mRNA was measured in peripheral blood mononuclears of 45 CLL patients with UM IGHV genes by real-time quantitative reverse transcription polymerase chain reaction. Mutational status of IGHV genes and TP53 genotyping (rs1042522, rs1642785, rs17883323, rs2909430, rs145153611, rs113530090, rs12947788, rs12951053, and rs17878362) were performed by polymerase chain reaction amplification followed by direct sequencing. Results: Observed CLL patients were divided on groups with low (11.17 ± 2.66) and high (275.48 ± 39.37) LPL expression. In CLL patients with UM IGHV genes and low LPL expression we found an increased frequency of rs1042522 G (p = 0.0036), rs1642785 C (p = 0.0001), and rs17878362A2 alleles (p = 0.0091). The possible functional significance of these changes is discussed. Conclusion: Some polymorphic variants of TP53 may be genetic modifiers for LPL expression level in CLL leukemic B-cells. Further research is required in a larger cohort to confirm these findings
Доп.точки доступа:
Abramenko, I.
Bilous, N.
Chumak, A.
Dyagil, I.
Martina, Z.

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11q23/MLL rearrangements in adult acute leukemia / O. V. Zotova [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P229-233

MeSH-главная:
ЛЕЙКОЗ МИЕЛОИДНЫЙ ОСТРЫЙ -- LEUKEMIA, MYELOID, ACUTE (генетика, диагностика)
ЦИТОГЕНЕТИЧЕСКИЙ АНАЛИЗ -- CYTOGENETIC ANALYSIS (использование, методы)
Аннотация: o detect the frequency, diagnostic and prognostic significance of 11q23/MLL rearrangements and to determine the chromosomes that are most frequently involved in 11q23/MLL abnormalities in adult acute leukemia (AL). Materials and Methods: Cytogenetic investigations of bone marrow and/or peripheral blood cells from 140 patients with acute myeloid leukemia (AML) and 57 patients with acute lymphoblastic leukemia (ALL) were performed. The methods of conventional cytogenetics (GTG-banding) and fluorescence in situ hybridization were used. Results: Chromosomal abnormalities in leukemia cells were found by conventional cytogenetic methods in 80 (57%) and 37 (65%) adult patients with AML and ALL, respectively. 11q23/MLL rearrangements were found in 7 (5%) and 8 (14%) patients with AML and ALL, respectively. Among them, 8 (53.4%) patients had translocations, 2 (13.3%) — had deletions and 5 (33.3%) patients had trisomies or tetrasomies of chromosome 11. With respect to the distribution of partner chromosomes involved in 11q23/MLL translocations chromosome 4 was found to participate in 3 (37.5%) cases of 11q23/MLL translocations, 9 — in 2 (25%) cases and chromosomes 10, 14 and non-identified chromosome were involved in 1 (12.5%) case each. Nine patients (60%), besides abnormal ones, had 9–86% normal metaphases in their karyotypes. Of 15 patients with 11q23/MLL rearrangements, 5 (33%) patients had only 11q23/MLL rearrangements, whereas other 10 (67%) — had additional cytogenetic abnormalities, besides 11q23/MLL rearrangements. Conclusions: Chromosomal abnormalities of various kinds were found in 57% and 65% adult patients with AML and ALL, respectively. The frequency of 11q23/MLL rearrangements in patients with AML and ALL was 5% and 14%, respectively. Since AL patients with 11q23/MLL rearrangements are attributed to cytogenetic categories of AL with a poor or intermediate risk prognosis, cytogenetic methods should be included in the standard examination of AL patients for diagnosis, prognosis and selection of the optimal treatment strategy
Доп.точки доступа:
Zotova, O. V.
Lukianova, A. S.
Valchuk, M. O.
Karol, Yu. S.
Dhalay, O. O.
Novak, V. L.
Loginsky, V. E.

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Evaluation of serum levels of selected cytokine receptors in adult B-cell precursor acute lymphoblastic leukemia and their association with prognostic factors and survival / J. M. Horacek [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P234-236

MeSH-главная:
ЛЕЙКОЗ-ЛИМФОМА ПРЕ-КЛЕТОЧНЫЙ ЛИМФОБЛАСТНЫЙ -- PRECURSOR CELL LYMPHOBLASTIC LEUKEMIA-LYMPHOMA (диагностика, иммунология)
ЦИТОКИНЫ -- CYTOKINES (метаболизм)
ПРОГНОЗИРОВАНИЕ -- FORECASTING
ВЫЖИВАЕМОСТИ АНАЛИЗ -- SURVIVAL ANALYSIS
Аннотация: To evaluate serum levels of selected cytokine receptors in B-cell precursor acute lymphoblastic leukemia (B-ALL) and their association with acknowledged prognostic factors, relapse-free survival (RFS) and overall survival (OS). Materials and Methods: A total of 42 de novo adult B-ALL patients, 19 BCR/ABL positive, were included in this study. Soluble receptor α for IL-2 (sIL-2Rα), soluble receptor for IL-6 (sIL-6R), soluble receptor for TNF-α type I and II (sTNFR-1, sTNFR-2) and matrix metalloproteinase-9 (MMP-9) were measured by biochip array technology at diagnosis and in complete remission (CR). Results: At diagnosis of B-ALL, we found significantly higher levels of sIL-2Rα, sIL-6R, sTNFR-1, sTNFR-2 and significantly lower levels MMP-9 in comparison with CR (p 0.001 in all cases). BCR/ABL positive patients had higher levels of sIL-2Rα at diagnosis (r
Доп.точки доступа:
Horacek, J. M.
Kupsa, T.
Vanek, J.
Jakl, M.
Stajer, M.
Jebavy, L.
Zak, P.

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Konovalenko, V. F.
Experimental substantiation of the use of hydroxyapatite - tricalcium phosphate bioceramics for replacing bone defects after tumor removal / V. F. Konovalenko [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P237-241

MeSH-главная:
БИОСОВМЕСТИМЫЕ МАТЕРИАЛЫ -- BIOCOMPATIBLE MATERIALS (терапевтическое применение)
КЕРАМИКА -- CERAMICS (терапевтическое применение)
ГИДРОКСИАПАТИТЫ -- HYDROXYAPATITES (терапевтическое применение)
КАЛЬЦИЯ ФОСФАТЫ -- CALCIUM PHOSPHATES (терапевтическое применение)
АРТРОПЛАСТИКА ЗАМЕСТИТЕЛЬНАЯ -- ARTHROPLASTY, REPLACEMENT (использование, методы)
КОСТЕЙ НОВООБРАЗОВАНИЯ -- BONE NEOPLASMS (хирургия)
Аннотация: Recently, bioactive ceramics based on hydroxyapatite (HAP) and tricalcium phosphate (TCP) have been preferred as implants in bone engineering. Aim: To study bone regeneration under conditions of filling metaphyseal defects with the original HAP-TCP composition. Materials and Methods: The experiment was carried out on inbred rats, the observation period was 2, 4, 8 weeks. Morphological studies were carried out using light and electron microscopy. Results: In the dynamics of observation at 2, 4 and 8 weeks, a gradual arrangement of osteoclasts and osteoblasts on the surface of HAP-TCP was recorded, which indicates its high biocompatibility with bone tissue. During the experiment, the processes of resorption of implants, mineralization, proliferation of cellular elements of collagen and osteogenesis (osteoblasts and osteoclasts) and the formation of mature bone tissue were recorded. Conclusions. Experimental studies of plastic bone defects proved the presence of the osteoinductive and osteointegrative effect of HAP-TCP composition, which contributes to a more dynamic uncomplicated course of reparative osteogenesis
Доп.точки доступа:
Ternovyi, N. K.
Tuz, E. V.
Protsenko, V. V.
Solonitsyn , E. O.
Udai, A.
Drobotun, O. V.
Ulianchych, N. V.

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10.

Effects of brachytherapy on cytogenetic parameters and oxidative status in peripheral blood lymphocytes of gynecologic cancer patients / V. S. Ivankova [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P242-246

MeSH-главная:
БРАХИТЕРАПИЯ -- BRACHYTHERAPY (использование, методы)
ПОЛОВЫХ ОРГАНОВ ЖЕНСКИХ НОВООБРАЗОВАНИЯ -- GENITAL NEOPLASMS, FEMALE (диагностика, кровь, терапия)
ЦИТОГЕНЕТИЧЕСКИЙ АНАЛИЗ -- CYTOGENETIC ANALYSIS (использование, методы)
ЛИМФОЦИТЫ -- LYMPHOCYTES (метаболизм)
Аннотация: The state-of-the-art brachytherapy technologies with high-dose sources of 60Co and 192Ir within contemporary treatment protocols for cancer patients allow achieving maximum dose distribution in the clinical target and with minimum radiation exposure of surrounding organs and tissues. For minimization and overcoming the early and late radiation complications, development of respective radiobiological criteria along with perfecting of physical and technical characteristics of the ionizing radiation sources are required. Aim: To study the effect of 192Ir radiation on the chromosomal aberrations and prooxidant/antioxidant status of blood lymphocytes in gynecological cancer patients. Materials and Methods: The patients (n = 45) with endometrial, cervical and secondary cancer of vagina were enrolled in the study. For brachytherapy, the irradiation of vaginal mucosa was conducted using “GammaMed plus” device for contact radiation therapy with 192Ir source. Prior to irradiation and in 20–24 h after brachytherapy session, the venous blood samples were obtained and peripheral blood lymphocytes (PBL) were cultured for cytogenetic analysis. The prooxidant/antioxidant status was determined in hemolysates by the method of hydrogen peroxide-induced chemiluminescence. Results: The average level of spontaneous chromosome aberrations in PBL of the patients was (7.8 ± 0.4) per 100 metaphases, which is more than twice higher than the upper limit of the average population values. The frequency of chromosome aberrations in PBL of patients after brachytherapy session was (15.3 ± 1.0) per 100 metaphases. An increased intensity of O2- generation by PBL after brachytherapy session was also noticed. Conclusion: Local irradiation at a dose of 6 Gy featuring the first dose fraction of brachytherapy induces extra chromosomal aberrations in PBL of gynecological cancer patients and intensifies prooxidant processes in the bloo
Доп.точки доступа:
Ivankova, V. S.
Domina, E. A.
Khrulenko, T. V.
Makovetska, L. I.
Hrinchenko, O. O.
Baranovska, L. M.

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11.

Neutrophil to lymphocyte ratio as a prognostic marker for non-metastatic renal cell carcinoma - does it add to what we already know? / S. Rawoot [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P247-251

MeSH-главная:
КАРЦИНОМА ПОЧЕЧНО-КЛЕТОЧНАЯ -- CARCINOMA, RENAL CELL (диагностика, кровь)
НЕЙТРОФИЛЫ -- NEUTROPHILS
ЛИМФОЦИТЫ -- LYMPHOCYTES
ПРОГНОЗИРОВАНИЕ -- FORECASTING
Аннотация: To study the correlation of pre-operative neutrophil to lymphocyte ratio (NLR) with pathological stage, Fuhrman grade, sarcomatoid differentiation, tumor necrosis and lymph node positivity and its prognostic role in non-metastatic renal cell carcinoma (non-mRCC). Materials and Methods: This retro-prospective, observational study was done at a tertiary care center in Mumbai, India. All patients with non-mRCC from July 2015 to April 2018 were included. Patients with co-existing systemic infection, prior immunotherapy, and long-term steroids were excluded. NLR closest to surgery, but within one month prior to surgery was used. Patients were stratified as NLR ≥ 3.0 or 3. NLR was correlated with known prognostic factors by Pearson’s correlation. Results: 113 patients, aged 18–81 years (83 males and 30 females) were included. 75% had clear cell RCC. 62% had stage 1 disease. 58% patients had Fuhrman Grade 2. 10 patients had lymph node metastasis, 6 had sarcomatoid differentiation, 40 had tumor necrosis. The NLR was 3 in 72 patients. Statistically significant correlation between NLR and tumor stage (p
Доп.точки доступа:
Rawoot, S.
Punatar, C.
Singh, V.
Anand, A.
Shah, B.
Nagaonkar, S.
Joshi, V.

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12.

Plasma ctDNA ras status selects patients for anti-EGER treatment rechallenge in metastatic colorectal cancer: a meta-analysis / M. S. Vlachou [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P252-256

MeSH-главная:
КОЛОРЕКТАЛЬНЫЕ НОВООБРАЗОВАНИЯ -- COLORECTAL NEOPLASMS (диагностика, лекарственная терапия, патофизиология)
НОВООБРАЗОВАНИЙ МЕТАСТАЗЫ -- NEOPLASM METASTASIS (диагностика, лекарственная терапия, патофизиология)
АНТИТЕЛА -- ANTIBODIES (терапевтическое применение)
ЭПИДЕРМАЛЬНЫЙ ФАКТОР РОСТА -- EPIDERMAL GROWTH FACTOR (действие лекарственных препаратов)
Аннотация: Recently one randomized trial and several phase II studies underscored that patients with metastatic colorectal cancer who progressed after an initial clinical benefit from anti-epidermal growth factor receptor (EGFR) treatment may further benefit from rechallenge with anti-EGFR therapy. Testing circulating tumor DNA (ctDNA) RAS status prior to anti-EGFR rechallenge seems a promising non-invasive method to predict and monitor response to anti-EGFR readministration. Aim: To assess the capability of liquid biopsy ctDNA in exploring RAS status and in predicting outcome of metastatic colorectal cancer patients treated with anti-EGFR monoclonal antibody rechallenge. Materials and Methods: Systematic review of literature and meta-analysis of the available evidence. Results: Data from four studies involving 117 patients were available. All patients harbored RAS wild type tumors and derived benefit from first line anti-EGFR therapy. Of these, 65 underwent plasma ctDNA before anti-EGFR treatment rechallenge and were eligible for analyses: 35 patients had RAS wild type ctDNA, and 30 RAS mutated, indicating that 46% of patients underwent RAS status conversion after primary anti-EGFR therapy. Anti-EGFR rechallenge among patients with plasma ctDNA RAS wild type status was associated with a consistent benefit in progression free survival (hazard ratio (HR) 0.40, 95% confidence interval (CI) 0.22–0.70; p = 0.001; I2 = 0) and overall survival (HR 0.37, 95% CI 0.16–0.85; p = 0.02; I2 = 74%) when compared to its use among patients with plasma ctDNA RAS mutation. Patients with plasma ctDNA RAS wild type profile also performed statistically better in term of disease control rate, risk for disease progression at 3 and 6 months, and risk for death at 6 and 12 months. Conclusion: RAS status assessment continues to be useful in predicting benefit for anti-EGFR treatment
Доп.точки доступа:
Vlachou, M. S.
Mauri, D.
Zarkavelis, G.
Ntellas, P.
Tagkas, C.
Gkoura, S.
Pentheroudakis, G.

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13.

Safety profile and clinical outcome of adjuvant radiation therapy and intermediate - dose interferon in comparison with intermediate dose interferon alone in patients with melanoma metastases in regional lymph nodes and unfavorable prognostic factors / M. Kukushkina [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P252-260

MeSH-главная:
МЕЛАНОМА -- MELANOMA (диагностика, лекарственная терапия, патофизиология, терапия)
ЛИМФАТИЧЕСКАЯ СИСТЕМА, МЕТАСТАЗЫ -- LYMPHATIC METASTASIS (диагностика, патофизиология)
ЛУЧЕВАЯ ТЕРАПИЯ АДЪЮВАНТНАЯ -- RADIOTHERAPY, ADJUVANT (использование, методы)
ИНТЕРФЕРОНЫ -- INTERFERONS (терапевтическое применение)
ПРОГНОЗИРОВАНИЕ -- FORECASTING
Аннотация: To assess the safety profile and efficacy of adjuvant radiation therapy and intermediate-dose interferon in comparison with intermediate-dose interferon alone in patients with synchronous and metachronous skin melanoma metastases in regional lymph nodes with unfavorable prognostic factors. Materials and Methods: 96 patients with synchronous and metachronous skin melanoma metastases in regional lymph nodes (stage III according to American Joint Committee on Cancer) and unfavorable prognostic factors were randomized in 2 groups: one of them (n = 45) received regional radiation therapy 50–55 Gy and intermediate dose of α2b-interferon (RT + IFN) in adjuvant setting and another one (n = 51) intermediate dose of α2b-interferon alone (IFN). Results: The most common adverse events in both groups were pyrexia and fatigue but grades 3–4 were observed more frequently in the RT + IFN group than in the IFN group (24.4 and 42.2% vs 11.8 and 27.5% respectively). 3-year recurrence-free survival was 78.5% in the RT + IFN group and 73.8% in the IFN group (p = 0.72), 3-year progression-free survival was 63.2% in the RT + IFN group comparing with 57.2% in the IFN group (p = 0.59) and 3-year overall survival was 77.1% and 66.7%, respectively (p = 0.29). Median of recurrence-free, progression-free and overall survival was not reached in any group. Conclusions: Radiation therapy and intermediate-dose interferon in adjuvant setting tends to improve recurrence-free, progression-free and overall survival comparing with intermediate-dose interferon alone in patients with synchronous and metachronous skin melanoma metastases in regional lymph nodes and unfavorable prognostic factors but it needs further investigation in larger groups of patients
Доп.точки доступа:
Kukushkina, M.
Korovin, S.
Diedkov, S.
Ostafiichuk, V.
Diedkov, A.

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14.

Redox dependent features of tumors, adipose tissue. neutrophiles and platelets in patients with metastatic colorectal cancer / A. P. Burlaka [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P261-265

MeSH-главная:
КОЛОРЕКТАЛЬНЫЕ НОВООБРАЗОВАНИЯ -- COLORECTAL NEOPLASMS (метаболизм, патофизиология)
НОВООБРАЗОВАНИЙ МЕТАСТАЗЫ -- NEOPLASM METASTASIS (патофизиология)
ОЖИРЕНИЕ -- OBESITY (патофизиология)
Аннотация: To study the levels of redox-forming molecules generated in tumor, adipose tissue (AT), neutrophils and platelets of patients with colorectal cancer (CRC) with normal body weight or obesity. Materials and Methods: 83 samples of tumor tissue and 83 samples of the AT taken at the distance of 5 cm from the tumor as well as 83 blood samples have been analyzed in the patients with CRC with metachronous lesions in liver. The comparison group consisted of 18 patients who were surgically treated for ulcer. The rates of free radical generation were measured by electron paramagnetic resonance. Results: Free radical generation rate in tumor tissue and AT increased and nitrogen oxide (NO) levels decreased in patients with body mass index ≥ 25 kg/m2 as compared to the patients with normal body weight (p 0.05). The superoxide generation activity in neutrophils of CRC patients exceeded about 7-fold the values obtained in neutrophils from patients with ulcer while the NO levels produced by neutrophils of CRC patients decreased significantly (p 0.01). The same trends held true for the platelets. Conclusions: In obese patients with CRC, superoxide-generating activity increases in cancer cells, AT, neutrophils and platelets. The obesity should be considered as the additional oncological risk representing the potent predictor for the events realized in obese patients such as oxidative stress, inflammation, insulin resistance and endothelial dysfunction
Доп.точки доступа:
Burlaka, A. P.
Virko, S. V.
Burlaka, A. A.
Krupnyk, K. L.

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15.

ESR1 gene variants affect FSHR-depended risk of fibrocystic mastopathy in infertile women / A. G. Kornatska [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P266-269

MeSH-главная:
БЕСПЛОДИЕ ЖЕНСКОЕ -- INFERTILITY, FEMALE (патофизиология)
МАСТОПАТИЯ ФИБРОЗНО-КИСТОЗНАЯ -- FIBROCYSTIC BREAST DISEASE (генетика, диагностика, этиология)
Аннотация: The infertile women have an increased risk of developing benign and malignant tumors, in particular, breast cancer. Most studies have examined the role of gene variants in the risk of developing breast cancer, but there is little evidence of genetic risk factors for benign tumors. Aim: To assess the combined genetic risk of developing mastopathy in women with FSHR (rs6165, rs6166) and ESR1 (rs9340799, rs2234693) gene variants. Materials and Methods: The study included 87 infertile women (45 with concomitant fibrocystic mastopathy and 42 without mastopathy). Results: For rs9340799 and rs2234693 variants of the ESR1 gene, we did not find any significant differences in the distribution of genotypes in infertile women with or without mastopathy. In patients with mastopathy, there was a reliable increase in the frequency of 307Ala/Ala and 680Ser/Ser genotypes of FSHR gene (χ2 = 6.39, p = 0.012, OR = 4.49 (1.48–13.65)) as compared to patients without mastopathy. In the presence of 307Thr/Thr and 680Asn/Asn genotypes of the FSHR gene, a 4.88-fold reduction of mastopathy risk (χ2 = 8.06, p = 0.005, OR = 0.21(0.07–0.59)) was observed. The frequency of the FSHR and the ESR1 genotypes combinations — 307Thr/Thr+680Asn/Asn+351AG+397TC was significantly decreased in patients with mastopathy. Conclusions: Our study did not find an association of ESR1 gene variants with the risk of developing of mastopathy in infertile women although heterozygous variants of the ESR1 gene enhanced the “protective” effect of FSHR gene variants and reduced the risk of mastopathy
Доп.точки доступа:
Kornatska, A. G.
Rossokha, Z. I.
Fishchuk, L. Ye.
Dubenko, O. D.
Medvedieva, N. I.
Haksemberg, M. A.
Chubei, G. V.
Popova, O. F.
Gorovenko, N. G.

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16.

Oxamate, an inhibitor of lactate dehydrogenase, can stimulate M2 polarization of peritoneal macrophages in mice with Lewis lung carcinoma / G. I. Solyanik [et al.] // Experimental Oncology. - 2021. - Том 43, N 3. - P270-276

MeSH-главная:
КАРЦИНОМА ЛЬЮИС ЛЕГКОГО -- CARCINOMA, LEWIS LUNG (лекарственная терапия)
МАКРОФАГИ -- MACROPHAGES (действие лекарственных препаратов)
Аннотация: Inhibition of aerobic glycolysis of cancer cells is considered a promising therapeutic strategy for the treatment of neoplasms. Some inhibitors of energy metabolism can affect not only tumor cells but also the functional polarization of tumor-associated macrophages, which may either enhance the antitumor effect of such agents or impair their antitumor efficacy. Aim: To investigate the effect of oxamate, a lactate dehydrogenase (LDH) inhibitor, on the polarization of peritoneal macrophages (PMP) in both intact mice and mice with transplanted Lewis lung carcinoma (LLC). Materials and Methods: The low-metastatic LLC variant, LLC/R9, was transplanted to female C57Bl/6 mice. Sodium oxamate was used as the test agent at concentrations of 0.02, 0.2, and 2 mg/ml. Macrophage polarization in tumor-bearing mice was estimated on day 23 after tumor transplantation by assessing nitric oxide (NO) production and arginase activity as functional indices of PMPs polarization. Results: Oxamate can affect the functional polarization of PMPs in both intact mice and animals with transplanted LLC/R9. Oxamate in all studied concentrations changed the markers of PMPs polarization in intact mice (decreasing NO levels and activating arginase activity) that indicated the stimulation of M2 polarization. In tumor-bearing animals, stimulation of M2 polarization is observed at low concentrations of oxamate (0.02 mg/ml), but its high concentrations (2.0 mg/ml) causes M1 polarization, which is characterized by three-fold increase in the level of NO and a decrease in the level of arginase activity. Conclusion: Oxamate, an inhibitor of LDH, can stimulate M2 polarization of peritoneal macrophages of mice bearing LLC in a dose-dependent manner
Доп.точки доступа:
Solyanik, G. I.
Karaman, O. M.
Yakshibaeva, Y. R.
Pyaskovskaya, O. N.
Kolesnyk, D. I.

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17.

Chekhun, V. F.
Can SARS-CJV-2 change individual radiation sensitivity of the patients recovered from COVID-19? (experimental and theoretical backlground) / V. F. Chekhun, E. A. Domina // Experimental Oncology. - 2021. - Том 43, N 3. - P277-280

MeSH-главная:
КОРОНАВИРУСНЫЕ ИНФЕКЦИИ -- CORONAVIRUS INFECTIONS (осложнения)
РАДИОТОЛЕРАНТНОСТЬ -- RADIATION TOLERANCE
Аннотация: R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology of the National Academy of Science of Ukraine has been studying the mechanisms and specificities of individual radiation sensitivity (IRS) formation in professionals who work in the field of ionizing radiation, cancer patients and representatives of other population groups. Our data based on the use of G2-test in in vitro irradiated blood lymphocytes in late G2-period of cell cycle indicated an increased carcinogenic risk in professionals with high IRS. We suggest that the COVID-19 pandemic could make significant adjustments in the formation of IRS in professionals who have survived the disease and continue to work with ionizing radiation (IR). Increased systemic inflammatory activity, which persists for a long time in COVID-19 patients, in combination with low-dose range irradiation (professionals who continue to work with IR) and with local irradiation in the high-dose range (radiation therapy for cancer patients) may affect IRS. Repeated determination of IRS in professionals who have had COVID-19 infection, using chromosomal G2-radiation sensitivity assay will answer the question: can SARS-CoV-2 coronavirus affect the IRS? The proposed hypothesis of the radiosensitivity evolution needs further experimental validation using a set of radiobiological indices to clarify the mechanism of IRS formation following COVID-19 infection. The detected changes (increase) of human IRS after COVID-19 must be taken into account for personalized planning of radiotherapy of COVID-19 cancer patients
Доп.точки доступа:
Domina, E. A.

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