CONNECTIVE TISSUE DISORDERS AND METABOLIC CHANGES IN CHILDREN LIVING IN THE REPUBLIC OF SAKHA (YAKUTIA)

The article presents the results of the amino acid composition of urine in children with connective tissue disorders (undifferentiated connective tissue dysplasia syndrome – uCTD) living in the Republic of Sakha (Yakutia). Connective tissue disorders are associated with complex metabolic changes, including amino acid metabolism in children. However, currently available data are contradictory. The aim of this study was a comprehensive assessment of connective tissue disorders, as well as a comparative analysis of the amino acid levels in the urine of healthy children and children with uCTD. Materials and methods. The present study included 524 children who were part of the control group and 1266 children with undifferentiated connective tissue dysplasia syndrome included in the experimental group. The level of amino acids in the urine of 105 children was assessed using gas chromatography. Statistical analysis was performed using the SPSS program, version 22. Results and discussion. It has been established that the levels of amino acids in the urine of children provide information on the existing imbalance, which indicates, among other things, nutritional and metabolic disorders underlying a large number of diseases, including disorders associated with connective tissue. It is concluded that increased excretion of various amino acids in the urine of children with undifferentiated CTD syndrome may be a consequence of impaired protein synthesis due to the absence (or deficiency) of any amino acids in the diet.