17 research outputs found
THE IMPORTANCE OF GROWTH FACTORS IN THE DIAGNOSIS OF COLON CANCER
No full textObjective: to determine the level of growth factors in the blood serum of patients with left-sided colon cancer and to assess the feasibility of using these findings in the tumor detection.Material and Methods. The study group included 63 patients aged 20 to 75 years who underwent surgery for left-sided colon adenocarcinoma (descending, sigmoid, rectosigmoid) with stage i (t1–2n0m0), ii (t3–4an0m0), and iii (t1–2n1m0). Only 5 patients developed metastases in one regional lymph node. The remaining patients had no regional metastases. In all patients, before hospitalization, the tumor was confirmed by colonoscopy followed by histological examination. The group of comparison consisted of 25 patients with chronic hemorrhoids without exacerbation, who underwent colonoscopy. In patients of the study group, blood tests were drawn on the day of surgery before its starting. In patients of the comparison group, blood was taken after excluding colon cancer (after colonoscopy). Blood tests were carried out using a test system (Biolegend): multiplex set for determining growth factors (angiopoietin-2, (ang-2), egf, epo, FGF-basic, G-csf, GM-csf, HGF, M-csf, pdgf-aa, pdgf-BB, scf, tgf-α, vegf).Results. In cancer patients, the levels of egf, HGF, M-csf, pdgf-aa, and pdgf-BB were several times higher than in the control group (p <0.05). The level of pdgf-aa was 10 times higher in cancer patients than in controls. In addition to quantitative changes, statistically significant differences were observed between the vegf level and sex of the patients; angio protein-2, G-csf, epo, M-csf, pdgf-aa, pdgf-BB, vegf levels and the age of the patients; tgf-α, HGF levels and the histological grade of the tumor.Conclusion. It was found that changes in the level of biologically active substances that occur in colon cancer can serve as additional diagnostic markers for cancer detection
SOME FEATURES OF CYTOKINE PROFILE IN PATIENTS WITH GOUT AND INSULIN RESISTANCE SYNDROME
No full textAbstract. Blood serum levels of cytokines (Il-1β, TNFα, IL-2, IL-4, IL-6, IL-8, IL-10, IL-20, IL-23), cytokine soluble receptors (SRp55 TNFα, SR IL-6), as well as markers of insulin resistance were studied in a group of male patients with primary gout. Increased levels of the above cytokines and deficiency of soluble IL-6 receptors in blood serum were most pronounced in gouty patients with insulin resistance syndrome. Close links were revealed between serum uric acid and insulin contents in gouty patients. Significant correlations were found between the levels of insulin, some cytokines (IL-4, IL-6, TNFα), and soluble receptors (SRp55 TNFα, SR IL-6), thus presuming a certain role of impaired cytokine profile for development of insulin resistance syndrome in such cohort of patients. (Med. Immunol., 2011, vol. 13, N 6, pp 627-630
MOLECULAR-GENETIC AND SERUM DISORDERS MARKERS OF FOLATE METABOLISM IN PATIENTS PROLIFERATIVE DISEASE AND BREAST CANCER
No full textAim: to study the relationship between homocysteine, cysteine and glutathione in blood serum and various single nucleotide polymorphisms (SNPs) of genes involved in folate metabolism in patients with proliferative breast disease and breast cancer. Material and methods. The study included 112 patients with proliferative breast lesions and breast cancer in Transbaikalia. The control group consisted of 144 women having no breast cancer. Blood levels of homocysteine, cysteine and glutathione were evaluated by HPLC (high performance liquid chromatography). Genotyping was performed by polymerase chain reaction with the detection of amplification product in real-time. Results. Molecular-genetic testing revealed no association between breast disease and genetic polymorphisms of MTHFR(C677T), MTHFR(A1298C), MTR(A2756G), MTRR(A66G) in women with proliferative breast lesions and breast cancer, however, in contrast to the control group, the concentrations of homocysteine and glutathione were increased
Cytotoxic T lymphocytes in regional lymph nodes in colon cancer
No full textBackground. The study of the subpopulation composition of cytotoxic T lymphocytes and the expression of co-inhibitory proteins on their surface in regional lymph nodes is necessary for the development of new methods of targeted therapy for colorectal cancer (CRC). The aim. To assess the subpopulation composition of cytotoxic T lymphocytes and the expression of co-inhibitory molecules on their surface in regional lymph nodes in patients with colon cancer. Methods. The relative content of cytotoxic T lymphocytes in regional lymph nodes, the subpopulation composition of cytotoxic T lymphocytes, and the expression of immune checkpoints (CTLA-4, PD-1, TIM-3) by CD8-positive cells in 105 patients with stage III colorectal cancer were determined using flow cytometry. The control group consisted of 75 patients who underwent colon surgery for non-neoplastic diseases. Results. In patients with CRC, the number of naive CD8+ lymphocytes (CD3+CD8+CD45RA+CCR7+) in regional lymph nodes decreases by 1.6 times, the relative content of cytotoxic T lymphocytes of effector memory (CD3+CD8+CD45RA-ССR7-) increases by 2.6 times, and the relative content of CD8-positive cells expressing CD57 on their surface increases by 2.6 times. In patients with CRC, on the surface of CD3+CD8+ lymphocytes of regional lymph nodes, the expression of the co-inhibitory molecule CTLA-4 increases by 4.5 times, PD-1 by 2.2 times, and TIM-3 protein by 1.7 times. Conclusion. In patients with colorectal cancer, the subpopulation composition of cytotoxic T lymphocytes in regional lymph nodes changes, which is expressed in a decrease in the proportion of naive cells and an increase in the relative content of effector memory cells. In CRC, the expression of co-inhibitory molecules (CTLA-4, PD-1 and TIM-3) on cytotoxic T lymphocytes in regional lymph nodes increases
ЗНАЧЕНИЕ ФАКТОРОВ РОСТА В ДОПОЛНИТЕЛЬНОЙ ДИАГНОСТИКЕ РАКА ТОЛСТОЙ КИШКИ
No full text Objective: to determine the level of growth factors in the blood serum of patients with left-sided colon cancer and to assess the feasibility of using these findings in the tumor detection.Material and Methods. The study group included 63 patients aged 20 to 75 years who underwent surgery for left-sided colon adenocarcinoma (descending, sigmoid, rectosigmoid) with stage i (t1–2n0m0), ii (t3–4an0m0), and iii (t1–2n1m0). Only 5 patients developed metastases in one regional lymph node. The remaining patients had no regional metastases. In all patients, before hospitalization, the tumor was confirmed by colonoscopy followed by histological examination. The group of comparison consisted of 25 patients with chronic hemorrhoids without exacerbation, who underwent colonoscopy. In patients of the study group, blood tests were drawn on the day of surgery before its starting. In patients of the comparison group, blood was taken after excluding colon cancer (after colonoscopy). Blood tests were carried out using a test system (Biolegend): multiplex set for determining growth factors (angiopoietin-2, (ang-2), egf, epo, FGF-basic, G-csf, GM-csf, HGF, M-csf, pdgf-aa, pdgf-BB, scf, tgf-α, vegf).Results. In cancer patients, the levels of egf, HGF, M-csf, pdgf-aa, and pdgf-BB were several times higher than in the control group (p <0.05). The level of pdgf-aa was 10 times higher in cancer patients than in controls. In addition to quantitative changes, statistically significant differences were observed between the vegf level and sex of the patients; angio protein-2, G-csf, epo, M-csf, pdgf-aa, pdgf-BB, vegf levels and the age of the patients; tgf-α, HGF levels and the histological grade of the tumor.Conclusion. It was found that changes in the level of biologically active substances that occur in colon cancer can serve as additional diagnostic markers for cancer detection.Цель исследования – определить уровень факторов роста в сыворотке крови больных раком левой половины толстой кишки и оценить возможность использования этих данных в диагностике опухолевого процесса.Материал и методы. В основную группу вошло 63 пациента в возрасте от 20 до 75 лет, оперированных по поводу рака (аденокарциномы) левой половины ободочной кишки (нисходящий, сигмовидный, ректосигмоидный отделы) i (t1–-2n0M0), ii (t3–4аn0M00 и iii (t1–2n1M0) стадии. У 5 пациентов был выявлен метастаз в одном регионарном лимфоузле. Остальные пациенты были без регионарного метастазирования. У всех пациентов до госпитализации опухоль была подтверждена посредством колоноскопии с последующим гистологическим исследованием. Группу клинического сравнения в количестве 25 человек составили пациенты с хроническим геморроем вне обострения, которым проводилась колоноскопия. Забор крови у пациентов основной группы осуществлялся в день операции до ее начала. У пациентов группы клинического сравнения кровь брали после исключения рака толстой кишки (после колоноскопии). исследование крови осуществлялось с помощью тест-системы (Biolegend): мультиплексный набор для определения факторов роста (angiopoietin-2, (ang-2), eGF, ePO, FGF-basic, G-CsF, GM-CsF, HGF, M-CsF, PdGF-aa, PdGF-BB, sCF, tGF-α, VeGF).Результаты. В среднем у онкологических пациентов уровень таких сравниваемых веществ, как eGF, HGF, M-CsF, PdGF-aa, PdGF-ВВ, был выше, чем в контрольной группе, в несколько раз, что является статистически значимым (р<0,05). Особенно ярко выраженная разница (более чем в 10 раз) установлена по уровню PdGF-aa. кроме общих количественных изменений, установлена статистически значимая зависимость уровня исследуемых веществ: VeGF – с полом; angioprotein-2, G-CsF, ePO, M-CsF, PdGFaa, PdGF-ВВ, VeGF – с возрастом пациента; tGF-α, HGF – со степенью дифференцировки опухоли.Заключение. Установлено, что изменения уровня биологически активных веществ, возникающие при раке толстой кишки, могут служить дополнительным диагностическим маркером при выявлении злокачественной опухоли
Acute kidney injury in patients with pneumonia with A/H1N1 influenza
No full textBackground. A critical condition of any genesis may be accompanied by the development of multiple organ failure, one of the manifestations of which is acute renal injury. Often, the process is subclinical in nature and the «classical» approaches to diagnose renal damage by creatinine concentration, urea level and assessment of glomerular filtration rate may not fully reflect the degree of impaired renal function, while acute kidney injury is a well-known predictor of high hospital mortality among critically ill patients.Aims. The purpose of this study was to assess functional state of the kidneysby determining the serum concentration of the markers of kidney injury NGAL and Cystatin C in patients with pneumonia associated with influenza A/H1N1.Materials and methods. 85 patients with pneumonia associated with influenza A/H1N1 were examined, 30 patients with severe pneumonia, 55 with non-severe pneumonia. The control group was formed by 15 healthy donors. The serum concentration of NGAL and Cystatin C molecules was determined by flow cytometry on a Beckman Coulter analyzer (USA), using a Human Immune Checkpoint Panel 1 multiplex assay kit (Biolegend, USA). The glomerular filtration rate was calculated using the CKD-EPI formula.Results. It was found that in patients with severe pneumonia with the influenza A/H1N1, the concentration of NGAL increased 3.8 times compared with the control group, the concentration of Cystatin C increased 1.4 times, the glomerular filtration rate did not change.Conclusion. Timely diagnosis of subclinical kidney injury makes it possible to objectify the severity of the condition, make adjustments to therapy, which can help to an increase in the survival rate of critically ill patients
tHE FATTY ACID SPECTRUM OF TUMOR TISSUE IN CERVICAL CANCER WITH DIFFERENT HISTOPATHOLOGIC GRADES
No full textThe higher fatty acid spectrum of tumor tissue in cervical cancer with different histopathologic grades was studied using the method of gas-liquid chromatography. Irrespective of differentiation grade, the high level of saturated fatty acids as compared to the control was observed mainly due to the increase in the amount of С14:0 and occurrence of С19:0. The increased level of monounsaturated fatty acids was observed in tumor tissue as compared to the control samples. Deficiency of ω-6 polyunsaturated fatty acids was noted in all tissue fragments. The specific features of fatty-acid composition of cervical cancer with different differentiation grade were found
Features of the interrelationships of some molecular parameters of cervical epithelium cells with biological characteristics of tumor cells in the process of cervical carcinogenesis
No full textBackground. Despite the known trigger and identified risk factors, the screening program developed, many aspects of the pathogenesis of cervical cancer are still being studied. In particular, recently in the literature there are data on the participation of short-chain fatty acids in the tumor process. The aim of the study was to perform a correlation analysis of the level of TNF-A., its soluble sTNF-RI receptor, the spectrum of SCFA and some biological parameters (apoptosis, necrosis, proliferation, cell cycle) in the exocervical cells during dys- and neoplastic transformation. Materials and methods: the laboratory data obtained by us earlier were used to perform the Spearman correlation analysis. The groups of research: IA - the focus of the pre-tumor lesion of exocervix; IB - paradysplastic cells; IIA - locus of cervical cancer; IIB - paraneoplastic cells. Results. The correlation relationships between the parameters studied were multidirectional, determined by the state of the cell (healthy, dysplastic, malignant) and varied within one study, depending on the location in relation to the pathological focus. Conclusions. The revealed interrelations are important for expanding the already available information on cervical carcinogenesis, for discovery of new diagnostic methods and treatment of cervical neoplasia. Summarizing, it is possible to judge the presence of pathogenetic relationships between the processes of cervical carcinogenesis (proliferation, apoptosis, necrosis, modulation of the phases of the cell cycle), the level of short-chain fatty acids and cytokine production at the local level
Activity of Negative Regulation of the PD-1/PD-L1/PD-L2 T-Cell Response System in Patients with Pneumonia and Influenza A (H1N1)
No full textSystemic inflammation is an integral pathophysiological component of many critical illnesses. The systemic inflammatory response is based on a cascade of interactions leading to hypercytokinemia and, as a consequence, multiple organ failure, which is one of the main causes of mortality in intensive care units.Aim of the study. To evaluate the activity of the negative regulation system of T-cell response by determining the plasma levels of PD-1, PD-L1 and PD-L2 molecules in pneumonia patients with influenza A (H1N1).Materials and methods. 85 patients with pneumonia and underlying influenza A (H1N1) were examined. Among them there were 30 patients with severe pneumonia, and 55 patients with non-severe pneumonia. Plasma levels of PD-1, PD-L1, PD-L2 molecules was determined by flow cytofluorometry method.Results. In patients with severe pneumonia and underlying influenza A (H1N1), the plasma level of PD-1 receptor increased 4.6-fold, while the concentration of its ligands PD-L1 and PD-L2 increased 10.6 and 2.2-fold, respectively.Conclusion. Significant increase in levels of PD-1 and its ligands PD-L1 and PD-L2 in patients with pneumonia and underlying influenza A (H1N1) indicates the involvement of negative regulation system of T-cell response in the cascade of immunological reactions and is associated with the severe disease. Possible correction of immune reactions realized through PD-1/PD-L1/PD-L2 complex in critically ill patients is a promising research avenue
Диагностическое значение непрямых маркеров фиброза печени у пациентов с хроническим гепатитом В
No full textAim of investigation: The aim of the present study was to evaluate the possibility using of indirect liver fibrosis markers for the estimation of fibrosis severity and timely prescribing of antiviral therapy in patients with chronic hepatitis B.Materials and methods: We examined 130 patients with chronic hepatitis B (mean age 41,8±13,5 years, 70% of men) having known liver fibrosis stage based on fibroelastography or liver biopsy. The age of patients, 9 parameters of biochemical blood analysis, complete blood count and coagulogram along with 7 indices calculated on their base were considered. Their prognostic values were estimated by means of ROC analysis.Results: According to increase of liver fibrosis stage albumin, prothrombin index, platelet count, cholesterol reduce and aspartate aminotransferase, international normalized ratio, gamma-glutamyl transpeptidase, alanine aminotransferase, alkaline phosphatase levels rise (p<0,01). All of the laboratory parameters and indices were significantly different (p<0,01) in patients with minimal (F0–F1) and advanced (F2–F4) fibrosis. For patients with chronic hepatitis B the most significant predictors of advanced liver fibrosis (F2–F4) were: GUCI and King’s score indices as well as eLIFT scale. Index GUCI had the best diagnostic performance (area under the receiver operating characteristic curve 0,866) with 89,5% sensitivity and 78,0% specificity at cut off ≥0,7/ Conclusion: The assessment of indirect liver fibrosis markers in patients with chronic hepatitis B can be easily performed at any stage of medical care; they are quite informative and can be used for the estimation of fibrosis severity and timely conducting antiviral therapy.Цель: оценить возможность использования непрямых маркеров и рассчитанных на их основе индексов при определении выраженности фиброза печени для проведения динамического мониторинга прогрессирования фиброза и своевременного назначения противовирусной терапии пациентам с хроническим гепатитом В. Материалы и методы: обследовано 130 пациентов с хроническим гепатитом В (средний возраст 41,8±13,5 лет, 70% мужчин) с известной степенью выраженности фиброза на основании фиброэластометрии либо биопсии печени. Учитывались возраст пациентов, 9 показателей биохимического анализа крови, гемограммы и коагулограммы, а также 7 индексов, рассчитанных на их основе. Прогностическая значимость непрямых показателей фиброза и индексов оценивалась с помощью ROC-анализа.Результаты: с нарастанием стадии фиброза печени в периферической крови снижается уровень альбумина, протромбинового индекса, тромбоцитов, холестерина, повышается уровень аспартатаминотрансферазы, международного нормализованного отношения, гаммаглутамилтранспептидазы, аланинаминотрансферазы, щелочной фосфатазы (p<0,01). Все лабораторные показатели и индексы значимо различаются у пациентов с минимальным (F0–F1) и выраженным (F2–F4) фиброзом печени (р<0,01). Наиболее прогностически значимы для определения выраженного фиброза печени индексы GUCI, King’s score и шкала eLIFT, а наиболее информативным (площадь под характеристической кривой 0,866) с чувствительностью 89,5% и специфичностью 78,0% при точке разделения ≥0,7 является индекс GUCI. Заключение: исследование непрямых маркеров фиброза печени легко выполнимо на любом этапе оказания медицинской помощи и может использоваться для проведения динамического мониторинга прогрессирования фиброза и определения показаний к противовирусной терапии у пациентов с хроническим гепатитом В
