Diagnosis of diabetic nephropathy and chronic kidney disease in prepubertal children with type 1 diabetes mellitus

The state of renal function in children with type 1 diabetes mellitus and small, up to 5 years old, disease experience was studied. The aim of the study was to determine the indicators of the initial stages of the formation of diabetic nephropathy and chronic kidney disease. A prospective cohort study of a group of 46 prepubertal patients with type 1 diabetes mellitus and less than 5 years of illness was carried out. Diabetic nephropathy at the stage of microalbuminuria was detected already in 8% of children. Signs of the first, preclinical stage of chronic kidney disease, manifested by hyperfiltration, were found in 20% of patients, impaired tubular functions — in 28%. A moderate decrease in glomerular filtration rate corresponding to stage 2 of chronic kidney disease was observed in 4% of children with diabetes. An increase in the concentration of endothelial growth factor in the blood serum and the morning portion of urine, as well as monocyte chemoattractant protein-1 in the blood serum are sensitive highly specific markers of the formation of chronic kidney disease in patients of prepubertal age with a history of diabetes mellitus of less than 5 years. The relationship between the characteristics of the course of diabetes mellitus with endothelial growth factor and monocyte chemoattractant protein-1 was not revealed, which reflects the independent mechanism of the influence of neoangiogenesis and the reaction of non-infectious inflammation on the formation of diabetic nephropathy and chronic kidney disease. The relationship between vascular endothelial growth factor and monocyte chemoattractant protein-1 with the formation of early signs of chronic kidney disease and diabetic nephropathy has been revealed. The results obtained can be used for early diagnosis of diabetic nephropathy and the formation of a risk group for kidney damage in children with diabetes mellitus.

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