The values of indices of non-specific resistance and cytokine regulation for early diagnosis of secondary peritonitis

Abstract

The aim of the work is to study the changes in indices of non-specific resistance and cytokine regulation, relevant for the early diagnosis of secondary peritonitis. During the period 2016-2022, in the Surgery Department of the Communal Non-Profit Enterprise “Regional Clinical Hospital, Ivano-Frankivsk Regional Council” there were treated 192 patients with postoperative peritonitis. Of them, in 69 (35.9%) patients the changes in indices of non-specific resistance and cytokine regulation were studied. These studies were performed in the laboratory of the Department of Biological and Medical Chemistry of the Ivano-Frankivsk National Medical University. The content of CD3+-lymphocytes in the blood of patients with secondary peritonitis on admission to the hospital was 35.49±3.39%, which is 1.8-fold less than in the comparison group (p<0.002), with their subsequent drop up to 31.00±2.88% (p<0.002) during the third day of the disease. When determining CD4+-lymphocytes during the first day of observation, their indices were 21.49±3.11%, by 56% less than in the comparison group (p<0.002). During the third day of the disease, we observed a slight increase in this index – up to 23.90±3.26% (p<0.01). The study of the level of CD8+-lymphocytes showed that, on admission to the hospital, their level in blood serum was 13.92±1.05%, which is 1.6-fold lower than in patients of the comparison group (p<0.002). Their decrease was observed further, and during the third day this index was 8.08±2.28% (p<0.002). The content of CD11a+-cells on hospitalization was 11.32±0.54%, which is more than 6-fold less than in the comparison group (p<0.002). The content of CD162+-cells in the blood on hospitalization was 21.49±3.11%, which is 3.1-fold less than in the comparison group (p<0.002). The content of CD16+-cells in the blood on hospitalization was 10.83±0.87% (p<0.002). A significant increase in the content of IL in the blood serum at the initial stage of secondary peritonitis with subsequent pathological changes are contributing factors in the disorder of the body’s immune response. The content of IL-6 on admission was 759.72±28.06%, which is almost 3.4-fold higher than the indices in the comparison group (p<0.002). After surgery, this index gradually decreased and during the seventh day was 438.63±19.84% (p<0.002). The results obtained on such indices of non-specific resistance and cytokine regulation as CD3+, CD4+, CD8+, CD11a, CD162, CD95, CD16, HLA-DR+, IL-2, IL-4, IL-6 showed their significant differences between the subgroups studied (p<0.002), indicating their high sensitivity for diagnosing and predicting the development of secondary peritonitis.