Abstract
The purpose of this study was to search for molecular prognostic markers of diabetic nephropathy (DN) in patients with type 2 diabetes mellitus (T2DM). The study included 205 patients with T2DM and DN (stages 1 to 4). All patients were stratified by the MDRD equation. The control group included 30 healthy individuals. All T2DM patients were divided into 4 groups depending on the DN stages. Group 1 included 42 patients with DN-Stage 1 (prenephropathy), Group 2 included 48 patients with DN-Stage 2 (incipient nephropathy); Group 3 included 65 patients with DN-Stage 3 (overt nephropathy), and Group 4 included 50 patients with DN-Stage 4 (kidney failure). Molecular phenotyping of urine was processed with methods of proteomics: the prefractionation, the separation of proteins with standard sets (MB-HIC C8 Kit, MB-IMAC Cu, MB-Wax Kit, «Bruker», USA), matrix-assisted laser desorption-ionization time-of-flight mass spectrometry (MALDI-TOF-MS/MS, Ultraflex II, «Bruker», USA). The data of the molecular interactions and functional features of proteins were received with STRING 10.0 database. Potentially new molecular markers of DN development
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