THE RATIO OF SYSTEMIC INFLAMMATION, OXIDATIVE STRESS AND GLUTATHIONE REDOX STATUS INDICATORS IN PATIENTS WITH CORONARY HEART DISEASE AND TYPE 2 DIABETES MELLITUS

Objective. To study and compare indicators of systemic inlammation and red blood cells glutathione redox potential by chronic oxidative stress (OS) in patients with coronary heart disease (CHD), type 2 diabetes mellitus (T2DM) and the combination of both diseases.

Design and methods. The study included 35 patients with CHD and newly diagnosed T2DM, 109 patients with CHD, 19 patients with T2DM, and 89 healthy individuals. Systemic inlammation indicators were measured including concentration of interleukin (IL) 6 and 8, myeloperoxidase (MPO) and OS in plasma, oxidized (GSSG) and reduced (GSH) glutathione, as well as their ratio and redox potential (E), the activity of glutathione reductase (GR) and glutathione peroxidase (GP) in red blood cells.

Results. Signiicant growth of systemic inlammation (IL-6, IL-8, MPO) indicators on the weakening antioxidant defense enzyme has been registered in patients with a combination of CHD and T2DM, a 3,4-fold reduction of GSH level, 5,8-fold of 2GSH/GSSH in red blood cells and E values towards the oxidized state at 36,3 mV were noted. These changes were less pronounced in CHD group and were absent in T2DM group. All subjects showed a decreased activity of GP and increased level of glycosylated hemoglobin. The correlation of E and activity GR have been found in patients with carbohydrate metabolism disorder. High positive relationship between IL concentration and red blood cells GR, E indicators has been identiied in patients with CHD and T2DM. There is a need to control and correct cellular redox potential in patients with CHD and T2DM.

Conclusion. The combination of CHD and T2DM contributes to the decrease of red blood cells redox status glutathione secondary to the increased systemic inlammatory response and chronic OS indicators.

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