[PROINFLAMMATORY CYTOKINES AND SIGNALING PATHWAYS IN PERIPHERAL BLOOD MONONUCLEAR CELLS IN PATIENTS WITH CORONARY ARTERY DISEASE].

Aim To determine content of mononuclear ells (MNC) in peripheral blood of patients with coronary heart disease (CHD) and factors responsible for their functional state and cytokine production. Materials and methods Concentration of proteinkinases JNK1/2, ERK1/2, MAPK38, AKT1, JAK2, FAK, AMPK, p70S6K, STAT3, STAT5B and STAT6 was determined in MNC lysate by immune-enzyme assay. Interleukin 1β, 2, 4 and y-interferon levels were measured in blood sera. Results In patients with angina of effort and unstable angina, the JNK level was 59,8% and 53,1% higher than the normal one respectively (р=0,013) and (р=0,012). The level of the nuclear transcription factor was 26,9% (р=0,015) and 27,9% (р=0,017), JAK2 31,5% (р=0,022) and 48,6% (р=0,018), STAT3 49,6% (р=0,025) and 55,3% (р=0,02), STAT5B 21,5% (р=0,018) and 30,2% (р=0,011) lower. These changes were associated with a 13,1% (р=0,047) and 51,4% (р=0,019) rise in the STAT6 level, 30,1% (р=0,025) and 79,4% (р=0,003) FAK level, 7,6% (р=0,09) and 15,2% (р=0,039) АКТ1 level, 65,3 (р=0,02) and 76,2% (р=0,017) p70S6K level. Conclusion Results of the study suggest persistent pro-inflammatory activation of whole blood cells in CHD patients due to enhanced levels of IL-1 and IL-2, components of the MAPK/SAPK signal pathway in MNC and decreased STAT3 level determining cell sensitivity to IL-10. The elevated intracellular level of ERK and JNK us responsible for high responsiveness of MNC to pro-inflammatory cytokines.