| Summary: | The problem of frequently ill children has extreme relevance in medical practice. A special group is FIC with autonomic dysfunction syndrome, born prematurely with perinatal damage of the central nervous system (CNS). In previous studies, we found that FIC who were born prematurely with perinatal damage of the central nervous system exhibit lower immunoreactivity than their healthy peers. Purpose of the work – to study the biochemical indicator of immunocompetent cells (the study of the phospholipid composition of granulocyte membranes) of the frequently ill children with autonomic dysfunction syndrome, born prematurely with perinatal damage to the central nervous system (CNS). Materials and methods. 68 children in the age of 6-7 years who are belonging to the group of frequently ill were examined. Out of 68 children, there were 36 children with autonomic dysfunction syndrome (SVD) born prematurely with perinatal hypoxic-ischemic damage to the central nervous system (group 1) and 32 children without autonomic dysfunction syndrome born on time without central nervous system damage (group 2). Results. A study of the phospholipid composition of blood granulocyte membranes of patients of the studied groups revealed significant differences comparison with the control group. The revealed changes in granulocyte biomembranes were more pronounced for FIC with SVD born prematurely with perinatal CNS damage than for children born on time without CNS and SVD damage. Conclusions. The obtained data allow us to conclude that FIL who were born preterm with perinatal damage of the central nervous system, changes in the biochemical characteristics of membranes are observed to a slightly greater extent than for children who were born on time without central nervous system damage. The revealed changes in immunocompetent cells are characterized by an increase in the polarity of the lipid component of biomembranes and a decrease in the relative content of neutral lipids in them. These violations lead to a change in protein-lipid interactions, which, as a result, leads to a change in the microviscosity of biomembranes and their structural and functional properties. At these children forme an inferior immune response to an infectious agent.
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