Changes in lipid-synthesizing function of the liver in congenital cytomegalovirus infection in death newborns

Abstract

Aim. To assess the change in the lipid-synthesizing function of the liver in congenital cytomegalovirus infection (CMVI) in dead newborns.Materials and methods. The study of the lipid spectrum of umbilical cord blood in the first minutes of life was carried out in 59 full-term newborns with antenatal ontogenesis, unburdened and burdened with congenital CMVI. The first group consisted of 25 newborns of early neonatal age (control group) from mothers without moderate and severe obstetric and somatic pathology, as well as respiratory viral diseases and sexually transmitted infections. The second group included 18 children of the same age (comparison group), whose mothers suffered exacerbation of CMVI in the second trimester of pregnancy, which did not lead to antenatal viral aggression. The third group was represented by 16 newborns with congenital CMVI. The life expectancy of children was 2-5 days. In the first group, the main cause of death of children was prolonged ante- and intranatal hypoxia, atelectasis and hyaline membranes of the lungs, in the second group – prolonged antenatal hypoxia, intranatal hypoxia and atelectatic, hyaline and edematous-hemorrhagic pneumopathies, and in the third group – congenital CMVI, which manifested itself as cerebral ischemia of moderate and severe degree, meningoencephalitis, ventriculomegaly, pseudocysts of the vascular plexus and subarachnoid hemorrhages, monocytosis, vesiculopustulosis, hepatitis and pneumonia. In the blood serum from the umbilical vein during biochemical analysis, the concentration (mmol/L) of total cholesterol, high-density lipoproteins, low-density lipoproteins and triglycerides was estimated.Results. In newborns of the second group in the blood serum from the umbilical cord vein, the concentration of total cholesterol was 1.90±0.04 mmol/L, high-density lipoproteins – 1.49±0.06 mmol/L, low-density lipoproteins - 0.26±0,02 mmol/L and triglycerides – 0.49±0.03 mmol/L (in the first group, respectively, 1.93±0.06 mmol/L, p>0.05; 1.37±0.06 mmol/L, p>0.05; 0.43±0.02 mmol/L, p<0.001; 0.45±0.02 mmol/L, p>0.05). In the third group, compared with the second one, there was a decrease in the level of total cholesterol to 1.79±0.04 mmol/L (p<0.05) and high-density lipoproteins – to 1.28±0.06 (p><0.05) against the background of an increase in triglyceride concentration up to 0.59±0.03 mmol/L (p><0.05). Conclusion. The above changes in the lipid-synthesizing function of the liver indicate a direct and indirect effect of congenital CMVI on the morphological structure of hepatocytes and the activity of enzyme systems. Key words: full-term newborns, congenital cytomegalovirus infection, total cholesterol, high-density lipoproteins, lowdensity lipoproteins, triglyceride>˂ 0.05) and high-density lipoproteins – to 1.28±0.06 (p<0.05) against the background of an increase in triglyceride concentration up to 0.59±0.03 mmol/L (p><0.05). Conclusion. The above changes in the lipid-synthesizing function of the liver indicate a direct and indirect effect of congenital CMVI on the morphological structure of hepatocytes and the activity of enzyme systems. Key words: full-term newborns, congenital cytomegalovirus infection, total cholesterol, high-density lipoproteins, lowdensity lipoproteins, triglycerides>˂ 0.05) against the background of an increase in triglyceride concentration up to 0.59±0.03 mmol/L (p˂ 0.05).Conclusion. The above changes in the lipid-synthesizing function of the liver indicate a direct and indirect effect of congenital CMVI on the morphological structure of hepatocytes and the activity of enzyme systems.