The features of the functional condition of the GH—IGF1 system in adolescent boys with different course of puberty and nontoxic diffuse goiter
Journal Title: Український журнал дитячої ендокринології - Year 2019, Vol 0, Issue 1
Abstract
Objective — to assess the production of growth hormone(GH) and insulin-like growth factor 1 (IGF1) in adolescent boys taking into account the state of the thyroid system and the course of puberty. Materials and methods. In 233 adolescents 14—17 years old, the state of the thyroid system was studied, the degree of sexual and physical development was assessed. The following groups were identified: the control group — healthy adolescents; adolescents with a normal volume of the thyroid gland and delayed sexual development (DSD); adolescents with nontoxicdiffuse goiter (NDG) and normal sexual development; adolescents with NDG and DSD. In the blood serum, the level of GH, IGF1 and sex hormones was determined by the radioimmunoassay; thyrotropin, free thyroxine and free triiodothyronine by enzyme immunoassay. Mathematical processing of the obtained results was carried out using the SPSS Statistics 17.0 and Excel software packages with the description of the main statistical parameters of the series. Results and discussion. Adolescents with NDG and normal sexual development had a level of GH ((3.65; 1.00—8.15) IU/l) and IGF1 ((290.80; 157.00—370.00) ng/ml), which was not significantly different from the control, due to a wide range of values. In adolescent boys with low growth, delayed sexual development and NDG, the lowest level of basal GH and IGF1 was determined. Among adolescents with NDG, low growth and DSD, the lowest level of basal IGF1, GH and reduced reserve capacity of somatotrophs were recorded. The close relationship between the functional state of the GH—IGF1 system, thyroid and sex hormones was confirmed by regression analysis, and the nature of the relationship between them depended on the course of puberty and the presence of goiter. Conclusions. In adolescents with delayed sexual development and nontoxic diffuse goiter there is a decrease in the functional activity of the GH—IGF1 system, which leads to a slower growth rate and the formation of a body weight deficit.
Authors and Affiliations
S. I. Turchyna
Keywords
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- EP ID EP604064
- DOI 10.30978/UJPE2019-1-49
- Views 119
- Downloads 0
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