LAUSR

Background. Arterial hypertension in patients with diabetes mellitus (DM) plays a main role in the earlier formation of diabetic kidney disease (DKD). Endothelial dysfunction is considered to be a process based on the development of diabetic complications. It is important to study the markers, which gives the opportunity to identify DKD in early stage. Objective: to evaluate 24-h ambulatory blood pressure data in patients with DM and its correlation with estimated glomerular filtration rate and endothelial dysfunction. Materials and methods. The endothelial function was determined by the levels of transforming growth factor-beta 1 (TGF-b1) and vascular cell adhesion molecule 1 (VCAM-1). There were 124 patients with DM (66 with type 1 and 58 with type 2) under observation. Results. Levels of endothelial function (TGF-b1 and VCAM-1) indexes in patients with type 1 and type 2 DM depended on glomerular filtration rate. Between the indexes of endothelial function (TGF-b1, VCAM-1) and the 24-hour ambulatory blood pressure, there is strong and average correlation, therefore, parameters of 24-hour ambulatory blood pressure and presence of endothelial dysfunction can be considered as early signs of DKD progression in patients with DM. Conclusions. 24-hour ambulatory blood pressure in patients with DM on the early stages of diabetic nephropathy is characterized by significant circadian rhythm disorders. The insufficient night decline of blood pressure in patients with type 1 and type 2 DM characterizes the presence of diabetic nephropathy progression according to the indexes of 24-h ambulatory blood pressure.