Substantiation of treatment tactics in young children with congenital malformations associated with undifferentiated connective tissue dysplasia

Abstract

Objective. To substantiate the treatment tactics in young children with congenital malformations of the urinary system (CMUS) associated with undifferentiated connective tissue dysplasia (UCTD).
Material and methods. 210 children of early age with pyelonephritis were examined on the background of CMUS, who were divided into 4 research groups: I ‑ with quantitative and positional abnormalities of kidney development (76 children), II ‑ with vesicoureteral reflux of various degrees (67), III ‑ with congenital hydronephrosis (53), IV ‑ with abnormalities of formation and differentiation of renal tissue – normonephronic hypoplasia and multicystic kidney dysplasia (14). The control group included 65 children with pyelonephritis without CMUS. In the urine of these children, the content of hydrooxyproline (HOP) was determined for the diagnosis of the presence or absence of UCTD and the markers of the morphofunctional status of the renal parenchyma.
Results and discussion. In children with CMUS of all groups compared with the control one, the phenotypic, clinical and biochemical signs of UCTD were more reliably recorded. HOP was most often detected in the urine of children with congenital hydronephrosis and the formation and differentiation of renal tissue anomalies. Excretion of polar lipids with daily urine was significantly higher in children with CMUS and UCTD association and it was the, most pronounced in patients with vesicoureteral reflux and congenital hydronephrosis. A significant decrease of creatinine excretion and an increase of glycosaminoglycan excretion with urine, markers of the renal parenchyma sclerotherapy was observed in 85% of children with CMUS, which was more pronounced in patients with UCDT.
Conclusions. The results of biochemical examinations make it necessary to supplement the complex of conservative therapy of children with CMUS and the phenotypic and biochemical features of UCDT with preparations stimulating collagen formation and have a bioenergetics effect by L-carnitine and vitamins B6 and E.