РОЛЬ N-КОНЦЕВОГО ФРАГМЕНТА МОЗГОВОГО НАТРИЙУРЕТИЧЕСКОГО ПЕПТИДА В ДИАГНОСТИКЕ НЕКОМПАКТНОГО МИОКАРДА У ДЕТЕЙ

Non-compacted myocardium is a rare congenital cardiomyopathy. Due to the lack of uniform criteria, diagnostics of this condition is complicated presently, which results in over-diagnosing. N-terminal pro-brain natriuretic peptide (NT-proBNP) is a marker of chronic cardiac insufficiency (CCI) in children. The results of the study of NT-proBNP in non-compacted myocardium diagnostics are represented in this article. It was established, that serum NT-proBNP levels were higher in children with non-compacted myocardium than in children with CCI and without this disorder (р < 0,01). The received data can be useful in clinical practice.Некомпактный миокард является редкой врожденной кардиомиопатией. В настоящее время диагностика данной патологии затруднена в связи с отсутствием единых критериев, что приводит к частой гипердиагностике. Натрийуретического гормона N-концевой полипептид (NT-proBNP) является маркером хронической сердечной недостаточности у детей. В статье представлены собственные результаты изучения роли NT-proBNP в диагностике некомпактного миокарда. Выявлено, что содержание NT-proBNP в сыворотке крови детей с некомпактным миокардом выше, чем у детей с хронической сердечной недостаточностью без данной патологии (р < 0,01). Полученные результаты могут быть полезны врачу в клинической практике

Estimation of the impact of semiconductor device parameters on the accuracy of separating a mixed production batch

In this paper, we investigate the problem of separation of a mixed production batch of semiconductor devices for the space industry into homogeneous production batches. The method of factor analysis is applied to reduce the dimensionality of the problem. We investigate the impact of measured parameters of semiconductor devices in the accuracy of the separation of the mixed lot, composed several homogeneous batches. It was shown, that with any orthogonal rotations of factor structure as the number of homogeneous batches in the sample increases, the clustering accuracy reduces. Groups of semiconductor device parameters which have the greatest impact on the partition accuracy regardless of the number of homogeneous batches in the sample detected

The Impact of Maternal SARS-CoV-2 Infection Next to Pre-Immunization with Gam-COVID-Vac (Sputnik V) Vaccine on the 1-Day-Neonate’s Blood Plasma Small Non-Coding RNA Profile: A Pilot Study

The antenatal and postnatal effects of maternal SARS-CoV-2 on the fetus outcomes, especially in the case of maternal pre-vaccination against this infection, are still under investigation. Such effects may be due to placental insufficiency caused by maternal hypoxia and inflammatory response associated with SARS-CoV-2, and/or be a direct cytopathic effect of the virus. In this work, we studied the profile of small non-coding RNAs (sncRNAs) in the blood plasma of a newborn from a mother who had SARS-CoV-2 at the 22nd week of gestation after immunization with Gam-COVID-Vac (Sputnik V). The fetus had ultrasound signs of hypertrophy of the right heart and hydropericardium 4 weeks after infection of the mother with SARS-CoV-2, as well as cysts of the cerebral vascular plexuses by the time of birth. Taking this into account, we compared the sncRNA profile of this newborn on the first postpartum day with that of neonates born to COVID-19-negative women with different perinatal outcomes: severe cardiovascular and/or neurological disorders, or absence of any perinatal complications. According to next-generation sequencing data, we found that the fetus born to a COVID-19-affected mother pre-immunized with Gam-COVID-Vac (Sputnik V) vaccine differs from newborns with severe cardiovascular and/or nervous system abnormalities either in multidirectional changes in circulating sncRNAs or in less pronounced unidirectional changes in the level of sncRNAs relative to control samples. Considering this, it can be concluded that maternal vaccination against SARS-CoV-2 before pregnancy has a protective effect in preventing antenatal development of pathological processes in the cardiovascular and nervous systems of the neonate associated with COVID-19