Publications by authors named "D S Stepanova"

This study is aimed at investigating the possibility of using spent cells of brewer's yeast to encapsulate the plant antioxidant curcumin and the effect of such an approach on the bioavailability of BAS in an digestion model. Spent brewer's yeast is a significant volume organic waste that is difficult to dispose of, which makes additional options for its use very promising. Encapsulation of curcumin into spent yeast cells was carried out in a nanostructured manner.

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Evolutionary potential of viruses can result in outbreaks of well-known viruses and emergence of novel ones. Pharmacological methods of intervening the reproduction of various less popular, but not less important viruses are not available, as well as the spectrum of antiviral activity for most known compounds. In the framework of chemical biology paradigm, characterization of antiviral activity spectrum of new compounds allows to extend the antiviral chemical space and provides new important structure-activity relationships for data-driven drug discovery.

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Angiogenesis is the process wherein endothelial cells (ECs) form sprouts that elongate from the pre-existing vasculature to create new vascular networks. In addition to its essential role in normal development, angiogenesis plays a vital role in pathologies such as cancer, diabetes and atherosclerosis. Mathematical and computational modeling has contributed to unraveling its complexity.

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In this work, the preparation procedure and properties of anionic magnetic microgels loaded with antitumor drug doxorubicin are described. The functional microgels were produced via the in situ formation of iron nanoparticles in an aqueous dispersion of polymer microgels based on poly(N-isopropylacrylamide-co-acrylic acid) (PNIPAM-PAA). The composition and morphology of the resulting composite microgels were studied by means of X-ray diffraction, Mössbauer spectroscopy, IR spectroscopy, scanning electron microscopy, atomic-force microscopy, laser microelectrophoresis, and static and dynamic light scattering.

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Article Synopsis
  • A new method for creating mixed polymer micelles using amorphous poly-D,L-lactide-block-polyethyleneglycol and crystalline amino-terminated poly-L-lactide significantly reduces the preparation time from several days to just 15-20 minutes through ultrasonication.
  • The resulting micelles, approximately 150 nm in size, exhibit low cytotoxicity, high stability in various conditions, and have an average molecular weight of 2.1 × 10 with an aggregation number of 6000.
  • They show potential as drug delivery vehicles, effectively encapsulating the antitumor drug paclitaxel with a lethal concentration similar to that found in commercial formulations.
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