Aim. To study the impact iron metabolism disturbances and cytokine levels on the development of anemia in patients with solid tumors. Materials & Methods. The research included 42 patients with malignant neoplasms, including 24 patients with anemia (19 men and 5 women, median age 67.7 ± 10 years) and 18 patients without anemia (15 men, 3 women, median age 65.7 ± 14 years). Anemia was diagnosed according to the WHO criteria (in men: erythrocytes < 4.0 <sup>x</sup> 10<sup>12</sup>/L, hemoglobin < 130 g/L, hematocrit < 39 %; in women: erythrocytes < 3.8 <sup>x</sup> 10<sup>12</sup>/L, hemoglobin < 120 g/L, hematocrit < 36 %). Results. A comparative analysis of iron metabolism in patients with and without anemia was performed. The lower values of serum iron and transferrin saturation in patients with anemia were shown (p < 0.05). The total iron-binding capacity, the levels of ferritin, transferrin, C-reactive protein, indirect bilirubin were similar between groups (p > 0,05). Higher levels of interleukins 6 and 10 (IL-6 and IL-10) were observed in patients with anemia (p < 0.05). For IL-6, correlations were observed with levels of erythrocytes (r = -0,58), hemoglobin (r = -0,57), hematocrit (r = -0,52), and leukocytes (r = 0,42). The levels of IL-10 slightly correlated with the levels of erythrocytes, leukocytes, platelets, MCV, and MCH (r < 0.3). For IL-10, correlations were established with levels of MCHC (r = -0,71), hemoglobin (r = -0,64) and hematocrit (r = -0,32). Correlations between the levels IL-6, IL-6 and hemoglobin, erythrocytes and several color indices may indicate their influence on the development of anemia in patients with malignant neoplasms. Conclusion. A functional iron deficiency in patients with anemia was found. Several causes of anemia development and significant role of interleukins in anemia pathogenesis were also discovered.
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Aim. To study the eff ect of hepcidin, soluble transferrin receptor (sTfR ), and cytokines on iron metabolism and the development of anemia in rheumatologic patients, to propose a working version of the classifi cation of anemia of chronic diseases (ACD) according to the major nosotropic factor.Material and methods. 126 patients with rheumatic disease, 34 men (45.8 (36–54.9) years old), 92 women (49.5 (38–60) years old) were examined. Group 1 included 41 patients with ACD. Group 2 included 29 patients with the combination of ACD and IDA and 34 patients with iron defi ciency anemia (IDA). Group 3 included 34 patients with IDA and 29 — with the combination of ACD and IDA. Control group included 22 patients without anemia. Comparative analysis between groups with and without anemia and correlation analysis of hemogram parameters, iron metabolism, C-reactive protein (CRP), hepcidin, sTfR , interleukin-6 (IL-6), IL-1β, IL-10, interferon gamma (INF-γ) and tumor necrosis factor alpha (TNF-α) were performed.Results. In the ACD group, the concentrations of hepcidin, ferritin, CRP, IL-6 were increased in comparison with other groups. The correlation was revealed between erythrocytes, hemoglobin and IL-6 (r = −0.3 and −0.6), IL-10 (r = −0.4 and −0.4), INF-γ (r = −0.4 and −0.3), TNF-α (r = −0.3 and −0.3), hepcidin (r = −0.5 and −0.7), sTfR (r = −0.5 and −0.7). Dependence was shown between IL-6 and iron (r = –0.6), transferrin saturation index (TSI) (r = −0.5), ferritin (r = −0.5), CRP (r = 0.5), between TNF-α and TIBС (r = −0.6), transferrin (r = −0.6), ferritin (r = −0.7), between IL-1β and TIBC, ferritin, transferrin (r = −0.4). The correlation was noted between hepcidin and IL-6 (r = 0.5), IL-10 (r = 0.4), between sTfR and IL-6 (r = 0.4), IL-10 (r = 0.6), INF-γ (r = 0.4).Conclusion. The multicomponent genesis of anemia in patients with rheumatologic disease was detected. The signifi cance of disorders in iron metabolism, the eff ect of hepcidin, sTfR and cytokines on the development of anemia was found. A working version of ACD classifi cation (with a predominant iron defi ciency, with violations of the regulatory mechanisms of erythropoiesis, with insuffi cient production of erythropoietin) has been put forward.
The development of novel predictors of immunotherapy efficacy is a clinically important and rapidly developing area. The currently existing predictors (PD-L1, MSI tumor status) do not always guarantee a positive treatment result. In addition, performing these analyses is characterized by the complexity, high cost, and long execution period. Thus, identifying potential new biomarkers in peripheral blood, which would be more accurate and accessible from a technical and economic point of view, is of great interest and is the object of active research. The article is a literature review of the currently available studies written worldwide on the topic of potential markers of the immunotherapy effectiveness. The most interesting and promising studies with intermediate conclusions are presented. We highlighted a number of clinical studies on the use of various assays and platforms for monitoring peripheral immune status. These studies point to the usefulness of these biomarkers as potential prognostic indicators.
A comparative analysis of hemogram parameters, iron metabolism, C-reactive protein, hepcidin, soluble transferrin receptor in patients with malignant neoplasms, accompanied by anaemia and without it. Patients with anaemia compared with non-anaemic patients had lower haemoglobin, erythrocyte, hematocrit, mean corpuscular haemoglobin and mean corpuscular haemoglobin concentration, iron, iron transferrin saturation, total iron-binding capacity, and higher levels C-reactive protein, hepcidin, soluble transferrin receptor (p0,05). Negative correlations of moderate strength between hepcidin and erythrocyte levels (r=-0,41), hemoglobin (r=-0,3), hematocrit (r=-0,35), and total iron-binding capacity (r=-0,51) and transferrin (r=-0,54). In addition, negative correlations of moderate strength were revealed between the soluble transferrin receptor and hemoglobin level (r=-0,57), hematocrit (r -0,49), iron transferrin saturation (r=-0,47), mean corpuscular hemoglobin (r=-0,44), mean corpuscular volume (r=-0,39). A direct correlation of moderate strength was found between the soluble transferrin receptor and transferrin (r=0,41) and total iron-binding capacity (r=0,38), as well as between hepcidin and ferritin (r=0,61), C-reactive protein (r=0,48). In general, the development of functional iron deficiency in patients with anaemia and malignant neoplasms has been established, and the value of hepcidin and soluble transferrin receptor in the genesis of this anaemia has been confirmed.
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