Publications by authors named "Zubkov V"

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  • Recent studies highlight an increasing prevalence of late-onset sepsis caused by fungal infections in immunocompromised patients, particularly concerning newborns in NICUs.
  • In a study of 3,519 newborns, very low birth weight (VLBW) infants showed a significantly higher rate of invasive mycoses and funguria compared to heavier neonates.
  • The research underscores the importance of monitoring fungal colonization in vulnerable infants, particularly those with low gestational age and extended NICU stays, and suggests enhancing diagnostic techniques to better identify these infections.
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  • Umbilical cord blood's use in hemostasis testing for newborns is under-researched, leading to this study aimed at evaluating its applicability compared to venous blood samples.
  • The study involved 187 newborns and found that umbilical cord blood exhibited a hypocoagulable shift in clotting times and fibrinogen levels, while thromboelastometry and thrombodynamics showed a hypercoagulable shift in newborn blood.
  • The differences in hemostatic parameters highlight that newborns have distinct coagulation profiles compared to adults, with implications for understanding their physiological and pathological hemostatic features.
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Brain injury resulting from adverse events during pregnancy and delivery is the leading cause of neonatal morbidity and disability. Surviving neonates often suffer long-term motor, sensory, and cognitive impairments. Birth asphyxia is among the most common causes of neonatal encephalopathy.

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  • Bowel ultrasound (US) enhances the diagnostic accuracy for necrotizing enterocolitis (NEC) and related complications in premature newborns.
  • A study of 84 extremely low birth weight (ELBW) infants found specific ultrasound findings linked to stage 3 NEC, including bowel wall thinning and complex ascites, showing a high diagnostic effectiveness of 96.8%.
  • Bowel US can complement traditional abdominal radiography, providing better insights for diagnosing infants suspected of having NEC.
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Novel temperature-sensitive luminescent materials, BaGdGeO doped with Bi, Bi/Sm or Bi/Eu ions, have been prepared using a conventional solid-state reaction technique. The XRPD study has verified that all the synthesized germanates crystallize in the monoclinic system (space group 2/, = 4). The crystal lattice of the compounds consists of zigzag chains of edge-sharing MeO (Me = Bi, Eu or Sm) dimers, [GeO] units, and ten-coordinated Ba atoms.

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Neonatal disorders, particularly those resulting from prematurity, pose a major challenge in health care and have a significant impact on infant mortality and long-term child health. The limitations of current therapeutic strategies emphasize the need for innovative treatments. New cell-free technologies utilizing extracellular vesicles (EVs) offer a compelling opportunity for neonatal therapy by harnessing the inherent regenerative capabilities of EVs.

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A new series of BaRE(GeO)(GeO) (RE = Tm, Yb, Lu) germanates and activated phases BaYb(GeO)(GeO):Tm and BaLu(GeO)(GeO):12Yb,Tm have been prepared using a solid-state reaction. An XRPD study has revealed that the compounds crystallize in the monoclinic system (space group 2/, = 2). The crystal lattice consists of zigzag chains of edge-sharing distorted REO octahedra, bowed trigermanate [GeO] units, [GeO] groups, and eight-coordinated Ba atoms.

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This article describes the experience of application of multipotent mesenchymal stromal cells in the complex therapy of severe recurrent cholangitis in 2 children with biliary atresia after Kasai surgery. In both children, hepatic cellular insufficiency and portal hypertension developed against the background of long-term inflammatory process poorly controlled by standard therapy, which was the indication for liver transplantation. During the course of mesenchymal stromal cells therapy, the relief of the inflammatory process and functional recovery of the liver were achieved.

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The study included umbilical cord blood samples (n=64) intended for cryogenic storage of hematopoietic stem cells and obtained from patients with a history of mild and moderate forms of COVID-19 during pregnancy. The control group was composed of samples (n=746) obtained from healthy women in labor. A comparative analysis of the volume of cord blood collected, the total leukocyte count, the relative and absolute content of cells with the CD34/CD45 phenotype revealed no significant differences between the groups.

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A new series of BaREGeO (RE = Pr, Nd, Gd, Dy) germanates and BaGdEuGeO (x = 0.1-0.8) solid solutions have been synthesized using the solid-state reaction technique and characterized by X-ray powder diffraction.

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Epidermolysis bullosa is a severe hereditary disease caused by mutations in genes encoding cutaneous basement membrane proteins. These mutations lead to dermal-epidermal junction failure and, as a result, to disturbances in the morphological integrity of the skin. Clinically, it manifests in the formation of blisters on the skin or mucosa that in some cases can turn into non-healing chronic wounds, which not only impairs patient's quality of life, but also is a live-threatening condition.

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By sequencing 523 ancient humans, we show that the primary source of ancestry in modern South Asians is a prehistoric genetic gradient between people related to early hunter-gatherers of Iran and Southeast Asia. After the Indus Valley Civilization's decline, its people mixed with individuals in the southeast to form one of the two main ancestral populations of South Asia, whose direct descendants live in southern India. Simultaneously, they mixed with descendants of Steppe pastoralists who, starting around 4000 years ago, spread via Central Asia to form the other main ancestral population.

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Background: Preterm newborns are at thrombohemorrhagic risk during the early neonatal period. Taking into account the lack of informative tools for the laboratory diagnosis of hemostasis disorders in newborns, our goal was to determine the baseline values of thrombodynamics and platelet functional activity in healthy term and moderately preterm newborns during the early neonatal period future potential clinical use of these tests.

Methods: Coagulation was assessed using an integral assay of thrombodynamics and standard coagulation assays, and platelet functional activity was estimated by flow cytometry.

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The apatite-like NaLa9(GeO4)6O2:Nd3+,Ho3+ phosphor is prepared using the solid-state method. Rietveld refinement of high-resolution time-of-flight neutron powder diffraction measurements indicate that this compound crystallizes in the hexagonal system with space group P63/m, Z = 1 and unit cell parameters a = 9.88903(6) Å, c = 7.

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The article presents the study of psycho- and neurotropic properties of novel 3-(N-R,R'-aminomethyl)-2-methyl-1H-quinolin-4-ones . The research was carried out using the open field test, elevated plus maze, rotarod test, tail suspension test, passive avoidance test after scopolamine-induced amnesia and acute normobaric hypoxia with hypercapnia. As a result, two promising substances have been found.

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According to the results of analysis of whole genome sequencing, the presence of genes having resistance to β-lactam antibiotics in hospital-associated strains of Klebsiella pneumoniae was studied. The strains were isolated from neonatal intensive care units. The data obtained were compared with the results of antimicrobial susceptibility testing of isolated microorganisms.

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This study was designed to collect and perform a proteomic analysis of expired air condensate in newborns receiving respiratory support at the Department of Resuscitation and Intensive Care. The proteomic composition of expired air condensate was evaluated in newborns at various stages of development and with different abnormalities.

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Kidney development is initiated by the outgrowth of an epithelial ureteric bud into a population of mesenchymal cells. Reciprocal morphogenetic responses between these two populations generate a highly branched epithelial ureteric tree with the mesenchyme differentiating into nephrons, the functional units of the kidney. While we understand some of the mechanisms involved, current knowledge fails to explain the variability of organ sizes and nephron endowment in mice and humans.

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The review deals with an analysis of articles about a gastroschisis, its firequency and outcomes of treatment. The review discusses the mortality in patients with gastroschisis in Russia and peculiarities of anaesthesia management and surgical treatment.

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Extensive studies have explored the dynamics of the ocular surface fluid, though theoretical investigations are typically limited to the use of the lubrication approximation, which is not guaranteed to be uniformly valid a-priori throughout the tear meniscus. However, resolving tear film behaviour within the meniscus and especially its apices is required to characterise the flow dynamics where the tear film is especially thin, and thus most susceptible to evaporatively induced hyperosmolarity and subsequent epithelial damage. Hence, we have explored the accuracy of the standard lubrication approximation for the tear film by explicit comparisons with the 2D Navier-Stokes model, considering both stationary and moving eyelids.

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The method for prediction of structural properties of ultrathin liquid layers has been developed on the base of the atomistic molecular dynamics (AMD) and the density functional theory (DFT). A comparative analysis of ultrathin dichloromethane layer density profiles on three types of solid flat substrates showed that these approaches can be effectively used as mutually complementary procedures to describe the structural properties of nanometer scale surface layers. We used AMD calculations to predict the dichloromethane layer density profile on a solid substrate.

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We present a mathematical model describing the spatial distribution of tear film osmolarity across the ocular surface of a human eye during one blink cycle, incorporating detailed fluid and solute dynamics. Based on the lubrication approximation, our model comprises three coupled equations tracking the depth of the aqueous layer of the tear film, the concentration of the polar lipid, and the concentration of physiological salts contained in the aqueous layer. Diffusive boundary layers in the salt concentration occur at the thinnest regions of the tear film, the black lines.

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The new compound, 2-methyl-3-phenylaminomethylquinolin-4-on, belongs to V class of toxicity and exhibits antidepressant and antiamnesic properties. It is established that this compound reduces the duration of immobilization in the test of behavioral despair, prevents from the scopolamine induced amnesia, and exhibits antagonism with reserpine in mice. In a dose of 100 mg/kg, the synthesized compound influences the levels of cerebral catecholamines similarly to imipramine, but with a more pronounced decrease in the level of 5-hydroxytryptamine.

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