Evaluation of Cytokines and Biomarkers of Inflammation Indices in Patients with Peritoneal Sepsis with Different Degrees of Severity

Abstract

Introduction. Sepsis, severe sepsis and septic shock are major public health problems worldwide. The consequences of sepsis are especially unfavorable for people with weakened immunity. Biomarkers of inflammation play an important role in the diagnosis of sepsis: C-reactive protein and procalcitonin, the indices of which increase significantly in this pathology. The aim of the study. To investigate quantitative indices of cytokines and biomarkers of inflammation in patients with peritoneal sepsis with different degrees of severity. Materials and methods. A group under examination included 101 patients. The esteemed laboratory indices included interleukins-1β, -2, -6, -10; tumor necrosis factor-α; C-reactive protein and procalcitonin concentration. Results. In patients with sepsis, the interleukin-1β index exceeded control values by 2.9 times. In the severe sepsis group this same index increased by 1.2 times, and in septic shock – by 1.4 times, compared to patients with sepsis. The concentration of tumor necrosis factor-α in the blood of patients with peritoneal sepsis, severe sepsis, and septic shock was 1.1, 9.2, and 2.9 times higher than control values, respectively. While measuring the concentration of interleukin-6, it was detected this index enhancement in all three groups of septic patients. Also it was documented certain decrease in the interleukin-2 index in all patients under investigation, compared to control. In patients with severe sepsis and septic shock, an increase in the level of interleukin-10 in comparison to control values was estimated up to 4.9 and 5.1 times. An increase in C-reactive protein and procalcitonin registered in all groups of septic patients, as well as the observed cytokine imbalance apparently reflect disability of the immune system to respond adequately and resist pathogenic microorganisms due to the deepening of the sepsis severity. Conclusions. In patients with peritoneal sepsis, the level of interleukin-1β exceeded control values by 2.9 times, in patients with severe sepsis – 3.7 times, and with septic shock – 4.2 times. The concentration of tumor necrosis factor-α in the blood of patients with peritoneal sepsis, severe sepsis, and septic shock was 1.1, 9.2, and 2.9 times higher than control values, respectively. Concentration of interleukin-6 in patients with peritoneal sepsis exceeded by 8.4 times, in the severe sepsis – by 18.8 times, and in septic shock – by 17.4 times control values. In patients with sepsis and severe sepsis of peritoneal genesis, the level of interleukin-2 decreased by 1.85 times, and in the septic shock group – by 1.6 times compared to the control values. Interleukin-10 indices in patients with sepsis increased by 1.28 times, in severe sepsis – by 4.9 times, and in septic shock – by 5.1 times in comparison with control values. An increase in C-reactive protein compared to its control values was detected in all patients under investigation: in the sepsis group – by 77.8 times, in severe sepsis – by 128.1 times, and in patients with septic shock – by 95.7 times. Similar enhancement of procalcitonin levels was observed in all patients under investigation with these indices correlation to the severity of the disease. Indices of pro-inflammatory and anti-inflammatory cytokines, as well as C-reactive protein and procalcitonin can be recommended as a reliable markers of the severity of the inflammatory process in patients with peritoneal sepsis. Digital values of cytokines and inflammatory biomarkers can serve as a valuable additional criteria for the assessment severity of the pathological process (sepsis, severe sepsis, and septic shock) of peritoneal origin. Keywords: peritoneal sepsis, severe sepsis, septic shock, interleukins, cytokines, immune imbalance.