The article presents information about the protein responsible for the iron depot in the body – ferritin. Its physiological role and clinical significance are demonstrated. A batophenanthroline method was used to determine the range of iron in the blood serum and the range of the total iron-binding capacity of the blood serum. The range of unsaturated iron-binding capacity of blood serum was calculated as the difference between total iron-binding capacity in blood serum and the range of iron in blood serum. The transferrin saturation coefficient of iron was defined as the ratio of the content of iron in blood serum to the total iron-binding capacity in blood serum. The range of transferrin was determined by the rate of the total iron-binding capacity in blood serum, and ferritin using the radiometric method. The dynamics of changes in ferritin content in malignant neoplasm anemia in patients with bladder cancer has been demonstrated. The conclusion about the importance of this parameter for laboratory diagnosis of iron deficiency and anemia of malignant neoplasms is made.

У статті представлено механізми розвитку нудоти та блювання у пацієнтів, які отримують цитостатичну терапію та наведені сучасні методи їх профілактики і лікування. Mechanisms of development of nausea and vomiting at patients which get cytostatic therapy a

Every year, more than 6 million people are diagnosed with and more than 4 million people die from cancer all over the world, which is approximately 10% of the total mortality. The incidence of cancer in Ukraine shows a gradual increase, with the number of newly diagnosed patients 304-308 per 100 thousand people. Bladder cancer ranks second in the world among oncological diseases of the urinary system after prostate cancer. In the later stages of diseases, their course may be associated with malignant neoplasm anemia. The purpose of the study was to study the content of 2,3-diphosphoglycerate in erythrocytes of peripheral venous blood of patients with malignant neoplasm anemia with urothelial bladder cancer and prostate cancer, depending on the severity of anemia; to evaluate the possible diagnostic and prognostic value of the studied indicator. Materials and methods. 96 patients (64 men and 32 women) with urothelial bladder cancer were examined. There were 39 patients (28 men and 11 women) among them, the course of their underlying disease was not accompanied by the presence of anemia (first (I) observation group) and 57 patients (36 men and 21 women), the course of their underlying disease was aggravated by malignant neoplasm anemia (second (II) observation group). Also, 48 men with prostate cancer whose course of the disease was not aggravated by malignant neoplasm anemia (19 men) (third (III) observation group) and 29 men (fourth (IV) observation group) were diagnosed with malignant neoplasm anemia. The age of the patients under the survey was from 22 to 79 years old. All patients were examined after verifying the diagnosis and before starting any treatment. The content of 2,3-diphosphoglycerate in erythrocytes of peripheral venous blood was determined by the method of I. S. Luganova, M. N. Blinov (1975). Results and discussion. The content of 2,3-diphosphoglycerate in peripheral venous erythrocytes of patients with malignant neoplasm anemia due to urothelial bladder cancer and prostate cancer has been studied. It was found that malignant neoplasm anemia in patients with urothelial bladder cancer and prostate cancer is associated with an increase in the studied indicator (p<0.05). The article discusses the possible causes and pathogenetic mechanisms of the identified changes. Conclusion. Patients with urothelial bladder cancer and prostate cancer have an imbalance of energy metabolism that occurs in erythrocytes. This process is manifested by an increase in the amount of 2,3-diphosphoglycerate