South Russian Journal of Cancer最新文献

{"title":"Area of combined surgical interventions, including those with an angiosurgical component, in terms of malignant non-organ retroperitoneal tumors’ treatment","authors":"O. I. Kit, A. A. Maslov, E. Kolesnikov, O. V. Katelnitskaya, M. A. Kozhushko, A. V. Snezhko, T. B. Katsieva, R. E. Myagkov, S. V. Sanamyants, A. E. Anisimov, K. V. Kolomiets","doi":"10.37748/2686-9039-2023-4-4-1","DOIUrl":"https://doi.org/10.37748/2686-9039-2023-4-4-1","url":null,"abstract":"Purpose of the study. To analyze the immediate outcomes following surgical treatment of locally advanced malignant non-organ retroperitoneal tumors (NRT).Materials and methods. Surgical interventions for malignant NRTs were performed in 114 patients at Abdominal Oncology Department № 1, National Medical Research Centre for Oncology.There were 48 males and 66 females among them. According to the histological structure, liposarcoma was commonly detected in 64 (56.1 %) cases.Results. Intraoperative revision revealed the spread of the tumor to adjacent anatomical structures in 67 (58.8 %) cases. Resection surgical interventions were performed in 109 patients, of which 106 (97.2 %) patients had operations performed in an amount of R0. Combined surgical interventions for NRTs were performed in 62 (54.4 %) patients, and multiorgan happened to be in 45 (72.6 %) patients out of those. Resection of the inferior vena cava was performed in 12 patients. Resection of the superior mesenteric vein was performed in 2 patients and the iliac-colonic vein in 2 patients. In 1 observation the left renal vein was resected with suturing of the lateral defect of the vessel wall. Complications during surgery and in the early postoperative period were noted in 14 (12.3 %) patients. In total, 2 patients died after operations, the mortality rate was 1.8 %.Conclusions. Tumor invasion of big main blood vessels is not a contraindication for surgical treatment of locally spread malignant non-organ retroperitoneal tumors.","PeriodicalId":22147,"journal":{"name":"South Russian Journal of Cancer","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139323495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microbiocenosis of adenocarcinoma tissue in colon cancer patients with different preoperative preparation","authors":"N. I. Simonenko, E. Zlatnik, N. I. Panova, O. G. Shulgina, A. Maksimov","doi":"10.37748/2686-9039-2023-4-4-3","DOIUrl":"https://doi.org/10.37748/2686-9039-2023-4-4-3","url":null,"abstract":"Purpose of the study. To assess the effect of inclusion of lactoglobulin in complex preoperative preparation of colon cancer patients on their tumor and resection line tissue microbiota.Materials and methods. 40 patients with colon cancer stages II–III, in whom the operation was the first stage of treatment, during standard preoperative preparation, were injected with a preparation of antibodies against opportunistic intestinal microorganisms obtained from colostrum of immunized cows, 2 g twice a day orally before surgery for 3 days (total dose of 12 g) (main group); 40 patients received standard antibiotic prophylaxis (control group). The quantitative composition of the microbiota was determined in the samples of the removed tumor and tissue of the resection line.Results. The total microbial contamination of the tumor was 9.2 times lower in the main group relative to the control group; the frequency of E.coli and Clostridiae excretion was also statistically significantly lower (p = 0.004 and 0.03, respectively). In the tumors of patients of the main group out of twelve studied representatives of microorganisms, the number of six was statistically significantly lower than in control group, and three of those found in the control group were not detected. Since they were potentially pathogenic (Pseudomonas aeruginosa, Staphylococcus aureus, fungi of the Candida spp.), the microbial composition of the tumor of patients in the main group can be considered more favorable than the control group. Similar differences were noted in non-t umor intestinal tissue, in which the content of Enterobacter spp, Streptococcus, Clostridiae, Peptostreptococci was statistically significantly lower than in the control group.Conclusion. Thus oral administration of colostrum antibodies caused positive changes in tumor and colon tissue microbiota. We suggest the application of lactoglobulin to be useful for surgical treatment of such patients taking into account the possible impact of microbiota in patients’ response to chemo- and immunotherapy.","PeriodicalId":22147,"journal":{"name":"South Russian Journal of Cancer","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139323759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low anterior resection syndrome and methods of its assessment (literature review)","authors":"O. Bondarenko, Y. Gevorkyan, N. Soldatkina, M. S. Gusareva, N. G. Kosheleva, A. Solntseva, M. N. Duritsky, D. A. Savchenko","doi":"10.37748/2686-9039-2023-4-4-6","DOIUrl":"https://doi.org/10.37748/2686-9039-2023-4-4-6","url":null,"abstract":"Low anterior resection syndrome is a common problem due to the increased incidence of rectal cancer and the high incidence of anorectal dysfunction during sphincter-preserving surgical interventions. The influence of functional disorders on the quality of life of patients and changes in social adaptation makes it possible to attribute the syndrome of low anterior resection to topical and discussed issues.Purpose of the study: to consider the features of the development of anorectal dysfunction in patients with rectal cancer by studying risk factors and pathogenetic aspects of the development of low anterior resection syndrome, as well as to evaluate the role of objective studies in assessing the syndrome according to published literature. The etiology of low anterior resection syndrome is multifactorial. Unmodified and modified predictors are distinguished among the risk factors. Unmodified factors include female gender and age over 65 years. Among the modifiable predictors, radiation therapy, surgical intervention, the type of formed colorectal anastomosis and the development of its insolvency, as well as the elimination of intestinal stoma have a negative effect on anorectal function. Nevertheless, the greatest role in its development is played by organ-preserving surgery with total mesorecumectomy, radiation therapy and the formation of a preventive ileostomy. The complexity of the pathophysiological mechanism of the syndrome necessitates a detailed study of anorectal function and changes in its parameters in patients during treatment for rectal cancer. Functional disorders in low anterior resection syndrome vary in severity. In the study of the severity of clinical manifestations of the syndrome, the use of the LARS scale is important, and in the development of anal incontinence, the use of the Wexner scale is important. However, the most accurate assessment can be carried out by objective research methods, such as high-resolution anorectal manometry. This research method allows to control the function of the rectal obturator apparatus at different stages of combined treatment and unwraps the possibility of searching for new predictors of low anterior resection syndrome.","PeriodicalId":22147,"journal":{"name":"South Russian Journal of Cancer","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139323612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic resonance imaging relevance in diagnosis and prognosis of early postoperative period following pancreatic cancer surgical treatment","authors":"E. Kolesnikov, D. Y. Iozefi, O. I. Kit, A. Maksimov","doi":"10.37748/2686-9039-2023-4-4-4","DOIUrl":"https://doi.org/10.37748/2686-9039-2023-4-4-4","url":null,"abstract":"Purpose of the study. Improvement of the prognostic outcomes for the pancreatic fistula development in surgical treatment for pancreatic cancer by implementation of new diagnostic algorithms for magnetic resonance imaging (MRI) assessment of supposed pancreatic stump.Materials and methods. We performed a retrospective analysis of MRI results of 1136 patients from the medical data base of National Medical Research Centre for Oncology for 2009–2020. An original scanning technique, trans- and cross-pancreatic imaging and MR spectroscopy of the pancreas in patients with pancreatic cancer, was developed and applied. Preoperative examinations were compared retrospectively: a standard MRI protocol without anatomical orientation of the series; MRI protocol using the developed technology.Results. 717 patients were diagnosed with advanced pancreatic cancer. Lymph nodes were affected in 302 patients among 419 patients with radical surgeries. All cases were confirmed morphologically. In the group of 419 patients with pancreatic resections, based on the analysis of morphological and clinical data and preoperative MRI data, we developed an original preoperative scale for assessing the risk of pancreatic fistula development and compared its accuracy with other intraoperative scales, FRS and modified FRS. Lactate and lipid complex were selected from a wide range of metabolites. The surgical protocols and results of histological examination of the surgical material were used to prove the accuracy of the study. The overall accuracy of the technique in predicting fistula development was 97.5 %. New visual predictors («domino» and «white on white» symptoms) based on MRI data were used to improve the scale accuracy.Conclusion. The developed method of using a modified scale for risk assessment of pancreatic fistula development allows predicting the onset of early postoperative complications already at the preoperative stage. When comparing the calculated risks of pancreatic fistula according to the developed scale with the results by the known scales (FRS and modified FRS), statistical analysis showed a significant difference for the better when compared with FRS (p = 0.0477), and a tendency when compared with modified FRS (p = 0.0544).","PeriodicalId":22147,"journal":{"name":"South Russian Journal of Cancer","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139323611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Successful extirpation of a perforated esophagus after chemo radiotherapy in infiltrative ulcerative squamous cell carcinoma","authors":"T. S. Rogova, P. G. Sakun, Y. Gevorkyan, S. Vlasov, L. Rozenko, S. Malinin, E. A. Karnaukhova, O. Rodionova, M. A. Komandirov, O. Y. Kaimakchi, N. Soldatkina, E. Gorbunova","doi":"10.37748/2686-9039-2023-4-2-7","DOIUrl":"https://doi.org/10.37748/2686-9039-2023-4-2-7","url":null,"abstract":"Esophageal cancer is one of the most aggressive malignant neoplasms of the gastrointestinal tract, occupying the eighth place in the structure of morbidity worldwide. Despite comprehensive approaches to treatment, mortality continues to grow in both gender groups, which moves this pathology to the sixth position in the structure of mortality from malignant tumors. A lot of patients undergo radiation therapy in the preoperative period or in an independent version due to the peculiarities of the localization of the tumor or the spread of the process. One of the serious complications of the disease on the background of ongoing conservative therapy is perforation of the esophagus, which, according to the literature, can develop from 5.6 to 33 % of cases, and the risk factors for the development of this complication are infiltrative-u lcerative form of cancer, disease stage T3–4 and the presence of esophageal stenosis, as well as the use of chemotherapy drugs such as fluorouracil and cisplatin. The article describes a clinical case of esophageal perforation in a patient with infiltrative-u lcerative form of squamous cell carcinoma of the esophagus on the background of preoperative chemoradiotherapy. The total focal dose (TFD) at the time of complication development was 24 Gy. As a result of a comprehensive additional examination, which revealed a developed complication in the form of perforation of the esophagus, an interdisciplinary council decided on an immediate surgical intervention, during which extirpation of the esophagus with gastro- and esophagostomy was performed. The patient was discharged on the 15th day in a satisfactory condition with a recommendation to conduct an IHC study for the presence of PD-L1 expression to determine further management tactics. This clinical case demonstrates the role of the infiltrative- ulcerative form of tumor growth, the stage of the disease, as well as the use of chemotherapy drugs during radiation treatment as risk factors for the development of esophageal perforation; an important task at the prehospital stage in the selection of such patients is a thorough examination in specialized oncological centers to exclude possible complications in the process of the above conservative treatment.","PeriodicalId":22147,"journal":{"name":"South Russian Journal of Cancer","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90177994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cultivation of cells in alginate drops as a high-performance method of obtaining cell spheroids for bioprinting","authors":"S. Filippova, T. V. Chembarova, S. V. Timofeeva, I. Mezhevova, N. Gnennaya, I. Novikova, T. Lapteva","doi":"10.37748/2686-9039-2023-4-2-5","DOIUrl":"https://doi.org/10.37748/2686-9039-2023-4-2-5","url":null,"abstract":"Purpose of the study. Testing the protocol of obtaining cell spheroids of breast cancer cell cultures for bioprinting by growing in alginate drops.Materials and methods. Cells of breast cancer cell lines BT-20 and MDA-MB-453 were cultured in DMEM medium supplemented with 10 % FBS. Next, the cells were removed from the plastic using a trypsin-V ersene solution and resuspended in a sterile 2 % alginate solution in DPBS to the concentration of 105 cells/ml. Then the alginate solution with the cells was slowly dripped through a 30G needle into a sterile cooled solution of calcium chloride (100 mM) from a height of 10 cm. After polymerization, alginate drops were washed in DMEM and cultured for two weeks in DMEM with the addition of 10 % FBS at 37 °C and 5.0 % CO2.The spheroids formed in the alginate were photographed on the 3rd, 7th, 10th, and 14th days of cultivation, after which they were removed from the alginate by keeping in 55 mM sodium citrate solution with the addition of 20mM ethylenediaminetetraacetic acid (EDTA) and embedded in paraffin blocks according to the standard method, followed by histological examination.Results. Cellular spheroids were formed in both cell cultures already on the 3rd day of cultivation. From the 3rd to the 10th day in both cultures, a uniform growth of cell spheroids was observed with a gradual slowdown in the increase in the size of spheroids by the 14th day of cultivation. On the 10th day the proportion of cells that formed clones (more than 500 μm2 in size) was 25.2 % ± 7.1 % (n = 25) in the BT-20 culture and 38.5 % ± 9.9 % (n = 25) in MDA-MB-453 culture. On the 14th day, BT-20 culture was characterized by spheroids varying little in size and shape, with an average area of 1652 ± 175 µm2, having a dense structure with smooth edges. The spheroids in MDA-MB-453 culture turned out to be more loose and easily deformed, their size and shape varied noticeably, the average area of the spheroids was 2785 ± 345 µm2.Conclusion. The production of spheroids in alginate drops is inferior in speed to the methods of forming cell conglomerates in hanging drops or on microwells, but it surpasses these methods in productivity, which is comparable to the production of spheroids by constant medium stirring on low-adhesive substrates. In addition, the clonal nature of the obtained spheroids leads to an increase in research costs and thus limits their scalability.","PeriodicalId":22147,"journal":{"name":"South Russian Journal of Cancer","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87058556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Varying severity COVID-19 effects on the blood indicators of insulin-like growth factors family in patients with nonsmall cell lung cancer","authors":"O. Kit, E. Frantsiyants, D. Kharagezov, V. Bandovkina, N. Cheryarina, Y. Pogorelova, Y. Lazutin, A. Milakin, I. Leyman, O. Stateshny","doi":"10.37748/2686-9039-2023-4-2-1","DOIUrl":"https://doi.org/10.37748/2686-9039-2023-4-2-1","url":null,"abstract":"Purpose of the study. An analysis of IGF and their carrying proteins levels in blood serum of patients with non‑small cell lung cancer (NSCLC), depending on the severity of the previous COVID-19 infection.Materials and methods. 60 patients with histologically verified NSCLC T2–3NхM0 receiving treatment at the Thoracic Department (National Medical Research Centre for Oncology, 2020–2021), were included in the study. The control group included 30 NSCLC patients after asymptomatic or mild COVID-19 disease (15 men and 15 women); the main group included 30 (15 men and 15 women) patients after severe or moderate to severe COVID-19. The mean age of patients was 59.11 ± 2.89 years. Blood counts of donors of the same age were used as the norm.Results. The levels of IGF-I, IGF-II, IGFBP2 and IGFBP3 in the blood serum of patients with NSCLC of the main and control groups were higher than those of donors by an average of 2.5, 2.1, 1.7 and 2.7 times, respectively (p < 0.05). The concentration of IGFBP1 was higher in the control group compared to the main group, and decreased in relation to donors: in the control in men and women by 1.4 and 1.9 times, and in the main group by 3.0 and 6.4 times, respectively (p < 0.05). The ratios of IGF and IGFBP1 increased in both groups: IGF-I/IGFBP1 – in the control group from 3.8 to 4.2 times, and in the main group from 7.9 to 14.4 times; IGF-II/IGFBP1 – in the control from 2.4 to 4.5 times, and in the main group from 6.6 to 12.7 times in men and women, respectively (p < 0.05).Conclusions. The level of ligands and almost all of the studied carrier proteins, except for IGFBP1, increases in the blood of patients with NSCLC of both sexes, regardless of the severity of COVID-19. The ratio of IGF-I/IGFBP1 and IGF-II/IGFBP1 in the blood increases in both groups, most significantly in the group with severe and moderate COVID-19, which indicates excessive accumulation of IGF levels and may contribute to a more aggressive course of the malignant process.","PeriodicalId":22147,"journal":{"name":"South Russian Journal of Cancer","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85838737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parameters of free radical oxidation and antioxidant defense in patients with cervical cancer before and after radical surgical treatment","authors":"N. Popova, I. Goroshinskaya, A. Shikhlyarova, D. A. Rozenko, A. Menshenina, A. Ardzha, N. V. Netyvchenko, S. A. Chekmezova","doi":"10.37748/2686-9039-2023-4-2-3","DOIUrl":"https://doi.org/10.37748/2686-9039-2023-4-2-3","url":null,"abstract":"Purpose of the study. To analyse free radical oxidation and antioxidant defense in patients diagnosed with early cervical cancer (CC) before and after radical surgical treatment.Patients and methods. Levels of diene conjugates, malondialdehyde (MDA), superoxide dismutase (SOD), catalase, glutathione, glutathione- dependent enzymes, vitamins A and E were determined in 74 women under the age of 45 (48 patients those who were at the stage of surgical treatment with a diagnosis of CC at the National Medical Research Center of Oncology in the period 2017–2020 and 26 healthy women).Results. Patients with early CC showed significant changes in the intensity of lipid peroxidation processes and in antioxidant defense: elevate levels of MDA and diene conjugates, initial decline in the activity of SOD and catalase, low levels of vitamins A and E. These results complete the understanding of the processes occurring in the body of an oncological patient at the initial stage of tumor formation, which does not yet have an obvious clinical manifestation. After total removal of the ovaries, most of the indicators characterizing the enzymatic link of the antioxidant system tend to normalize, while the violation of the content of vitamins E and A (related to the non-enzymatic link of the antioxidant system) worsens.Conclusions. Desynchronization of free radical oxidation processes with multidirectional changes in oxidation and antioxidation in patients with early CC at the stage of radical surgical treatment should be considered from the position of hormone‑ reducing surgery and a resulting complex of changes in the organs and systems of women with cancer.","PeriodicalId":22147,"journal":{"name":"South Russian Journal of Cancer","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88891291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solvothermal synthesis of rhombic shape GdF3:Tb3+ nanoparticles for biomedical applications","authors":"E. Kuchma, O. Polozhentsev, I. Pankin, A. Bulgakov, P. A. Rud, A. Soldatov","doi":"10.37748/2686-9039-2023-4-2-4","DOIUrl":"https://doi.org/10.37748/2686-9039-2023-4-2-4","url":null,"abstract":"Purpose of the study. In this work, we have investigated the mechanism of structure formation of GdF3:Tb3+(15 %) nanocrystals synthesized by solvothermal synthesis in the temperature range from RT to 200 °C with a step of 50 °C.Materials and methods. Nanocrystals of GdF3:Tb3+(15 %) were synthesized by the solvothermal method using a high-pressure reactor (autoclave) designed for temperatures up to 250 °C. The structure, size and morphology were determined by transmission electron microscopy (TEM), the type of crystal lattice and the size of crystallites of nanoparticles were studied by X-ray diffraction (XRD), hydrodynamic size of nanoparticles, particle size distribution, ζ-potential, agglomeration of nanoparticles in colloidal solutions were determined by dynamic light scattering (DLS), the chemical composition of the nanocrystals surface was studied by Fourier-t ransform infra-red spectroscopy (FT-IR), the nanoparticles ability to absorb UV radiation was analyzed by UV-visible spectroscopy (UV-vis) and X-ray excited optical luminescence (XEOL).Results. With an increase in the temperature of the synthesis reaction, a structural change in the crystallites phase occurs from hexagonal to orthorhombic. At low temperatures, agglomerated particles consisting of hexagonal nanocrystals are formed, while at a temperature higher than the boiling point of the solvent, monodisperse rhombic- shaped nanoparticles with orthorhombic phase are formed. At mild temperatures, agglomerated particles with different morphology and with mixed hexagonal and orthorhombic phases are formed. Based on the analysis of X-ray spectrum, it was found that the size of GdF3:Tb3+(15 %) nanocrystals varies from 10 to 50 nm for different synthesis temperature conditions (T = RT, 50 °C, 100 °C, 150 °C, 200 °C). The hydrodynamic size of nanoparticles decreases with increasing synthesis temperature. All GdF3:Tb3+(15 %) nanocrystals obtained at different temperatures are transparent to visible light and absorb UV radiation. Absorption in the UV region increases with an increase in the size of particle crystallites. Upon X-ray irradiation of the colloidal GdF3:Tb3+(15 %) solution, X-ray excited optical luminescence spectra showed emission peaks at 490 nm, 543 nm, 585 nm and 620 nm.Conclusion. The mechanism of structure formation of rhombic‑ shaped GdF3:Tb3+(15 %) nanocrystals has been investigated. These monodisperse rhombic- shaped nanoparticles can be used for X-ray induced photodynamic therapy (X-PDT) of superficial, solid and deep-seated tumors.","PeriodicalId":22147,"journal":{"name":"South Russian Journal of Cancer","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72924730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Levels of biogenic amines in lung tissues of patients with non-small cell lung cancer after COVID-19 of various severity","authors":"O. Kit, E. Frantsiyants, D. Kharagezov, V. Bandovkina, Y. Pogorelova, N. Cheryarina, Y. Lazutin, A. Milakin, I. Leyman, O. Stateshny, N. Ushakova","doi":"10.37748/2686-9039-2023-4-2-2","DOIUrl":"https://doi.org/10.37748/2686-9039-2023-4-2-2","url":null,"abstract":"Purpose of the study. Was to analyze levels of biogenic amines (serotonin and its metabolite 5-HIAA, dopamine, norepinephrine and histamine) in lung tissues of patients with lung cancer with previous COVID-19 infection.Patients and methods. The study was carried out on samples of intact lung tissues, tumor tissues and peritumoral lung tissues obtained during open biopsy while performing radical surgery from patients with morphologically verified non-small cell lung cancer (NSCLC), stage I–IIIA (cT1–3NХM0). The main group included 30 NSCLC patients (15 men and 15 women) after severe or moderate to severe COVID-19 who required hospitalization. The control group included 15 men and 15 women with NSCLC after asymptomatic or mild SARS-CoV-2 infection. The mean age of patients was 59.11 ± 2.9 years. Levels of dopamine, norepinephrine, serotonin, 5-hydroxyindoleacetic acid (5-HIAA) and histamine were measured by ELISA (IBL, Germany).Results. All studied lung tissue samples from men and women of the main group, compared to the control group, showed deficiency of catecholamines with their ratio unchanged, and changes in serotonin metabolism to ensure its stable level. Thus, levels of dopamine in samples of patients of the main group were lower on average by 1.3 times, norepinephrine by 1.3–3.3 times, serotonin by 1.6 times, and 5-HIAA by 1.8–4 times. At the same time, sex differences were observed in histamine levels. Regardless of the COVID-19 severity, levels of diamine in women were lower in the resection line tissue by an average of 2.4 times, and in the peritumoral tissue by 1.6 times, compared with men, but there were no sex differences in the tumor tissue. Conclusion. Apparently, changes in the levels of dopamine, norepinephrine, and serotonin in lung tissues could be associated with the severity of SARS-CoV-2 infection. Since dopamine is involved in counteracting the carcinogenic action of the adrenergic system and in the regulation of various immunocompetent cells in the tumor microenvironment, such changes in the biogenic status in the lungs of patients of the main group could lead to a more severe tumor course.","PeriodicalId":22147,"journal":{"name":"South Russian Journal of Cancer","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91102645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}