Features of nonspecific immunity in the progression of colorectal cancer

The purpose of our work is to study the spontaneous and induced chemiluminescent activity of neutrophilic granulocytes (NG) in patients with rectal cancer in dynamics. Materials and methods. The study included 56 patients with rectal cancer. At the first stage there were 9 people, in the II stage 19 people, on the III 17 and at the IV stage 11 patients. The object of study are neutrophilic granulocytes isolated from venous blood. The control group consisted of 112 healthy blood donors. The intensity of synthesis of active oxygen species of NG was determined by the method of chemiluminescence analysis. Results. The study showed a significant increase in the intensity of spontaneous and induced luminescence and the area under the curve of spontaneous chemiluminescence in the II-IV stages of the disease. When studying zymosan-induced chemiluminescence, the area under the curve is increased in all groups of patients, while in patients at stage IV the total production of ROS is significantly higher than in stages I and II. On the 7^th day after the surgical treatment, the intensity of spontaneous chemiluminescence remains elevated only in patients at the IV stage of the rectal cancer. The intensity of induced chemiluminescence and the area under the curve of spontaneous and induced luminescence are increased at all stages of the disease with respect to control. The activation index was increased in patients at all stages of with rectal cancer both before and after surgery. Сonclusion. As a result of the study, an increase in the intensity of ROS synthesis in patients with rectal cancer was revealed. The total production of reactive oxygen species is higher in the late stage of the disease. An increase in the activation index of neutrophils in all stages of the RPC characterizes the metabolic capabilities of neutrophils to the enhanced synthesis of ROS in functional activation.

нейтрофильные гранулоциты, хемилюминесценция, рак прямой кишки, neutrophilic granulocytes, chemiluminescence, rectal cancer