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[Estimation of IGF-1 and IGFBP-3 concentrations in serum in children with diabetes type 1 and growth disorders].

The relations between diabetes type 1 and growth disturbances have been controversial. The aim of the study was to estimate the IGF-1 and IGFBP-3 levels in the group of children with diabetes type 1 and growth disturbances. The study group consisted of 22 children (10 males and 12 females) aged 11.96+/-3.38, bone aged 10.70+/-3.91, GV SDS < -0.93 below the mean for C. A. IGF-1, IGFBP-3, GH stimulation test, TSH, fT4 and HbA1 were determined. In the studied group positive correlations between: IGF-1 and IGFBP-3; IGF-1 and BMI; BMI and IGFBP-3 were determined. In children with diabetes type 1. The IGF-1 concentration was significantly higher when the sceletal age was delayed above 1 year in comparison with children with delaying of the sceletal age bellow 1 year and it was independent on results of GH stimulation tests.

English Abstract↗

Somatomedin in growth disorders and chronic renal insufficiency in children.

Somatomedin activity was measured using an embryonic chick cartilage assay in 33 normal and short normal children, 23 children with pituitary growth hormone (GH) deficiency, 14 children with sexual precocity, and 13 children with chronic renal insufficiency. In normal children somatomedin activity correlated well with chronological age: low valles in early childhood rose to higher than adult levels at puberty. Children with GH deficiency had significantly lower activities and those with sexual precocity significantly higher activities than normal children. In all three groups somatomedin activity correlated well with bone age. In children with chornic renal insufficiency there was a significant correlation between decreasing somatomedin activity and both a reduced growth velocity and a falling glomerular filtration rate. Somatomedin activity and growth velocity were within normal limits in children with glomerular filtration rates above 30 ml/min/1-73 m2.

Adolescent↗