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. The incidence rate of necrotizing enterocolitis is 2.4:1000 of newborns. The number of complications reaches 51-68%, and mortality rate varies from 4 to 80%. The aim of the study was to present current data of Russian and foreign experimental studies related to necrotizing enterocolitis in children. Results. Currently, infants with low and very low body weight constitute the most proportion of patients with enterocolitis; the development of the disease in this cohort of patients has its distinctive features. In this regard, the issues of pathogenesis, the impact of risk factors and methods of prevention of the pathological process remain underinvestigated. Experimental models were used to study the features of the toll-interleukin 1 receptor domain containing adapter protein (TIRAP), the etiology of Toll-like receptor 4 expression, and the reasons for the increased levels of inflammatory mediators. The mechanism of intestinal-brain reciprocal communication was confirmed. The role of the bacterial flora and effectiveness of the antibacterial drug effect on this flora was also determined. Biomarkers of enterocolitis, such as an epidermal growth factor, interleukins, claudins 2, 3, 4, were detected using experimental modeling. Various options for disease prevention ranging from ischemic preconditioning to probiotics application and breastfeeding were analyzed, the latter ones having beneficial ability to form natural defenses in newborns. Conclusions. Thus, necrotizing enterocolitis is a severe systemic disease. Experimental modeling allows analyzing the most complex, unsolved problems and introducing novel knowledge into clinical practice.

Experimental Modeling of Necrotizing Enterocolitis: Pathogenesis, Predictors, Prevention of the Disease