Abstract
Background. Plasminogen activator inhibitor-1(PAI-1) is a marker of endothelial dysfunction(ED) and a predictor of both the development of type 2 diabetes mellitus, and a cardiovascular event(CVE). Its role in the CVE development was sufficiently studied in patients without carbohydrate metabolism disorders, and understudied in patients with prediabetes. Aim: the research interest is the study of PAI-1 in patients with prediabetes and its effect on the CVE development. Materials and methods. The case-control study of 168 patients aged from 18 to 65 was carried out among the local population from January to December 2019.After clinical examination, patients were divided into 3 groups: group 1 (n=55)– patients with prediabetes and with CVE; group 2 (n=93) - patients with prediabetes and without CVE; the control group n=20. Results. Differences in PAI-1 level were found in groups 1 (Me=30718.6 pg/ml) and 2 (Me=24692.0 pg/ml; p≤0.001), even greater differences were found in both groups compared to the control one (p≤0.001). The correlation analysis has found in both group influence such IR indicators as fasting glucose, IR-HOMA index, glucagon, C-peptide to elevation of PAI-1. These findings indicate that with an elevation of the PAI-1 level, the concentration of fasting glucose, glucagon, C-peptide and scores of IR-HOMA index increase in both group. The Binary regression analysis has demonstrated, that an elevation of the PAI-1 biomarker increases the likelihood of CVE by 3.3 fold in patients with prediabetes (p≤0.01). In addition to, a model has been derived for assessing the risk of cardiovascular events in patients with prediabetes. Conclusions. Elevation of PAI-1 concentration is associated with insulin resistance which leads to ED, and further development risk of CVE in patients with prediabetes.