The role of Enterobacteria, TNF-α, IL-6, and IL-10 in the development of myocardial ischemia with type 2 diabetes mellitus

Abstract

This study is to observe the distribution of intestinal flora and the changes of inflammatory factors in elderly patients with myocardial ischemia complicated with type 2 diabetes mellitus. A total of 106 elderly patients with myocardial ischemia complicated with type 2 diabetes mellitus (complicated group), 106 elderly patients with simple type 2 diabetes mellitus (diabetic group), and 106 healthy elderly people (control group) were selected. The fasting blood glucose (FBG), 1-h postprandial blood glucose (1hPG), 2-h postprandial blood glucose (2hPG), 3-h postprandial blood glucose (3hPG), and hemoglobin A1c (HbA1c) in complicated group and the diabetic group were higher than those in the control group (P < 0.05 or P < 0.01). The duration of diabetes, FBG, 3hPG, and HbA1c in the complicated group were higher than those in the diabetic group, while the 2hPG was lower than that in the diabetic group (P < 0.05). Compared with control group, the number of Enterobacteria in the diabetic group and complicated group was increased, while the numbers of Bacteroides, Bifidobacteria, and Lactobacillus were decreased (P < 0.05 or P < 0.01). Compared with the diabetic group, the number of Enterobacteria in complicated group was increased, while the numbers of Bacteroides, Bifidobacteria, and Lactobacillus were decreased (P < 0.05 or P < 0.01). Compared with control group, the levels of tumor necrosis factor alpha (TNF-α), interleukin 6 (IL-6), interleukin 1 beta (IL-1β), and C-reactive protein (CRP) decreased in the diabetic group and complicated group, and the lowest in the complicated group. Conversely, the levels of interleukin 10 (IL-10) and interleukin 12 (IL-2) increased in the diabetic group and complicated group, and the highest in the complicated group (P < 0.05 or P < 0.01). Multiple logistic regression analysis showed that the duration of diabetes, HbA1c, Enterobacteria, TNF-α, IL-6, and IL-10 were the influencing factors of myocardial ischemia complicated with type 2 diabetes mellitus (P < 0.05 or P < 0.01). In conclusion, in the elderly patients with myocardial ischemia complicated with type 2 diabetes mellitus, the number of intestinal probiotics and the level of anti-inflammatory factors decreased, and the number of pathogenic bacteria and the level of inflammatory factors increased. Enterobacteria, TNF-α, IL-6, and IL-10 may play an important role in the development of myocardial ischemia in type 2 diabetes mellitus.