Publications by authors named "I S Ivanova"

The present paper deals with the synthesis, characterization, and properties of sol-gel-derived TiO/TeO/NbO nanopowders. The gels were prepared using a combination of organic [Ti (IV) n-butoxide, Nb (V) ethoxide (CHNbO)] and inorganic [telluric acid (HTeO)] precursors. The aging of gels was performed in air for several days in order to enable further hydrolysis.

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Arrestins and integrin-linked kinase (ILK) are important scaffold proteins that regulate myriad cell functions in metazoans. β-arrestins, first identified as critical components in G-protein-coupled receptor (GPCR) signaling pathways, participate in inflammatory, immunomodulatory and tissue repair processes in GPCR-dependent and -independent manners. ILK is a central mediator of signaling cascades elicited by activation of integrins, regulating cell motility, proliferation, and mechanotransduction.

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Cutaneous (CLE) and systemic lupus erythematosus (SLE) are autoimmune diseases with a multifactorial pathogenesis. Ultraviolet radiation (UVR) is the most important trigger of CLE; however, the degree of photosensitivity varies between the clinical subtypes. The expression of matrix metalloproteinases (MMPs)-important enzymes involved in skin turnover and homeostasis-is modulated by UVR.

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Biomacromolecules generally exist and function in aqueous media. Is it possible to estimate the state and properties of molecules in an initial three-dimensional colloidal solution based on the structure properties of biomolecules adsorbed on the two-dimensional surface? Using atomic force microscopy to study nanosized objects requires their immobilization on a surface. Particles undergoing Brownian motion in a solution significantly reduce their velocity near the surface and become completely immobilized upon drying.

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Objectives: The antimicrobial, oxidative activities, and ecotoxicity of synthesized silver-loaded zeolites (X and ZSM-5(MFI), Si-to-Al ratios 12 and 25) were studied, linking antimicrobial properties to material structure and released active silver species.

Methods: The materials were characterized by SEM, EDX, TEM, and XRPD. All materials, with a silver content of 1-3%wt for the Ss and about 35%wt for the X-zeolites, were tested against and .

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