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BIOMARKERS OF APOPTOSIS IN GLYCOGEN STORAGE DISEASE IN CHILDREN


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Abstract

Glycogen storage disease (GSD) is a rare form of the pathology in children caused by genetically determined pathological changes of the formation or cleavage of glycogen. Depending on the disorders of functions of enzymes involved in glycogen metabolism, there are known up to 15 GSD types, among them there are isolated liver, muscular and mixed forms. There are presented data of the immunoassay analysis of changes in concentrations of the array of proteins considered as biomarkers of apoptosis: sAPO-1/FAS receptor, sFAS-L, cytochrome C, annexin V, caspase-8, caspase-9 and TNF-α in the serum of GSD with the prevailed liver damage (I, III, VI and IX types). There was established the excess of the concentration of cytochrome C in the serum of GSD children by 2,7 times sAPO-1/FAS receptor - 8,9 times, sFAS-L - 2,5 times, annexin V - 4,8 times and TNF-α - 2,9 times in comparison with reference values. Whereby the excess in the cytochrome C content, sAPO-1/FAS receptor, sFAS-L annexin V and the serum was observed in all patients, that indicating to the higher activity of apoptosis in GSD. In this connection GSD in children can be considered as a form of pathology associated with the pronounced apoptosis that contributes to the progression of structural changes in the liver.


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