8 research outputs found

    N-CYCLOAMINO-SUBSTITUTED POLYFLUORINATED SALICYLIC ACIDS AND THEIR BIOLOGICAL ACTIVITY

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    POLYFLUOROALKYL-2-(HET)ARYLHYDRAZONO-1,3-DICARBONYL COMPOUNDS IN INTRAMOLECULAR CYCLIZATION REACTIONS

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    This work was financially supported by the Program UB RAS (Grant number 18-3-3-13)

    ГСнСтичСскиС ΠΌΠ΅Ρ…Π°Π½ΠΈΠ·ΠΌΡ‹ распознавания Π±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠΉ Ρ€Π΅Ρ†Π΅ΠΏΡ‚ΠΎΡ€Π°ΠΌΠΈ Π²Ρ€ΠΎΠΆΠ΄Π΅Π½Π½ΠΎΠ³ΠΎ ΠΈΠΌΠΌΡƒΠ½ΠΈΡ‚Π΅Ρ‚Π° ΠΊΡ€ΡƒΠΏΠ½ΠΎΠ³ΠΎ Ρ€ΠΎΠ³Π°Ρ‚ΠΎΠ³ΠΎ скота

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    The research identified a list of molecules involved in the mechanisms of innate immunity in cattle and the recognition of bacterial pathogens. The current list of molecular receptors has expanded to include TLR receptors and the recently defined NOD-like receptors (NLRs): NOD, NALP, NAIP, and IPAF. TLR molecules are designed to transmit a ligand-binding signal on the cell surface or endosome and activate specific molecules of bacterial origin in the cytosol, such as peptidoglycans, RNA, toxins and flagellins. The obtained data on the molecular structure of TLR and NLR receptors indicate their anti-inflammatory role, mediated by signals through nuclear transcription factor ΞΊB and activation of caspase-1 in the inflammasome. It has been shown that the role of immunosensors of extracellular and intracellular perception of bacteria in regulating inflammation is synergistic. Mutations in TLR and NOD receptors are associated with autoimmune inflammatory syndromes. This review examines the body's ways of recognising intracellular pathogens, describes the problem of their mimicry from the animal immune system, and the molecular mechanisms of such interactions. Variants of molecular interactions of innate immune receptors with peptidoglycans, bacterial DNA and toxins, cell wall compartments, and bacterial flagellin receptors are also considered. This study aimed to analyse the current understanding of the genetic and molecular structure of the immune response to bacterial environmental factors and the mechanisms and characteristics of the reaction of the animal body.Π’ Ρ…ΠΎΠ΄Π΅ исслСдований ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ ΠΏΠ΅Ρ€Π΅Ρ‡Π΅Π½ΡŒ ΠΌΠΎΠ»Π΅ΠΊΡƒΠ», Π²ΠΎΠ²Π»Π΅Ρ‡Π΅Π½Π½Ρ‹Ρ… Π² ΠΌΠ΅Ρ…Π°Π½ΠΈΠ·ΠΌΡ‹ Π²Ρ€ΠΎΠΆΠ΄Π΅Π½Π½ΠΎΠ³ΠΎ ΠΈΠΌΠΌΡƒΠ½ΠΈΡ‚Π΅Ρ‚Π° ΠΊΡ€ΡƒΠΏΠ½ΠΎΠ³ΠΎ Ρ€ΠΎΠ³Π°Ρ‚ΠΎΠ³ΠΎ скота ΠΈ распознавания Π±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΏΠ°Ρ‚ΠΎΠ³Π΅Π½ΠΎΠ². Π‘ΠΎΠ²Ρ€Π΅ΠΌΠ΅Π½Π½Ρ‹ΠΉ ΠΏΠ΅Ρ€Π΅Ρ‡Π΅Π½ΡŒ молСкулярных Ρ€Π΅Ρ†Π΅ΠΏΡ‚ΠΎΡ€ΠΎΠ² Ρ€Π°ΡΡˆΠΈΡ€ΠΈΠ»ΡΡ ΠΈ Ρ‚Π΅ΠΏΠ΅Ρ€ΡŒ иммуносСнсоры Π²ΠΊΠ»ΡŽΡ‡Π°ΡŽΡ‚: Ρ€Π΅Ρ†Π΅ΠΏΡ‚ΠΎΡ€Ρ‹ TLR, Π° Ρ‚Π°ΠΊΠΆΠ΅ Π½Π΅Π΄Π°Π²Π½ΠΎ ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Π½Ρ‹Π΅ NOD-ΠΏΠΎΠ΄ΠΎΠ±Π½Ρ‹Π΅ Ρ€Π΅Ρ†Π΅ΠΏΡ‚ΠΎΡ€Ρ‹ (NLR): NOD, NALP, NAIP ΠΈ IPAF. ΠœΠΎΠ»Π΅ΠΊΡƒΠ»Ρ‹ TLR ΠΏΡ€Π΅Π΄Π½Π°Π·Π½Π°Ρ‡Π΅Π½Ρ‹ для ΠΏΠ΅Ρ€Π΅Π΄Π°Ρ‡ΠΈ сигнала связывания Π»ΠΈΠ³Π°Π½Π΄Π° Π½Π° повСрхности ΠΊΠ»Π΅Ρ‚ΠΊΠΈ ΠΈΠ»ΠΈ эндосомы ΠΈ Π°ΠΊΡ‚ΠΈΠ²Π°Ρ†ΠΈΠΈ Π² Ρ†ΠΈΡ‚ΠΎΠ·ΠΎΠ»Π΅ спСцифичных ΠΌΠΎΠ»Π΅ΠΊΡƒΠ» Π±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ происхоТдСния, Ρ‚Π°ΠΊΠΈΡ… ΠΊΠ°ΠΊ ΠΏΠ΅ΠΏΡ‚ΠΈΠ΄ΠΎΠ³Π»ΠΈΠΊΠ°Π½Ρ‹, РНК, токсины ΠΈ Ρ„Π»Π°Π³Π΅Π»Π»ΠΈΠ½Ρ‹. ΠŸΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ Π΄Π°Π½Π½Ρ‹Π΅ ΠΎ молСкулярной структурС Ρ€Π΅Ρ†Π΅ΠΏΡ‚ΠΎΡ€ΠΎΠ² TLR ΠΈ NLR ΡƒΠΊΠ°Π·Ρ‹Π²Π°ΡŽΡ‚ Π½Π° ΠΈΡ… ΠΏΡ€ΠΎΡ‚ΠΈΠ²ΠΎΠ²ΠΎΡΠΏΠ°Π»ΠΈΡ‚Π΅Π»ΡŒΠ½ΡƒΡŽ Ρ€ΠΎΠ»ΡŒ, ΠΎΠΏΠΎΡΡ€Π΅Π΄ΠΎΠ²Π°Π½Π½ΡƒΡŽ сигналами Ρ‡Π΅Ρ€Π΅Π· ΞΊB-Ρ„Π°ΠΊΡ‚ΠΎΡ€ ядСрной транскрипции ΠΈ Π°ΠΊΡ‚ΠΈΠ²Π°Ρ†ΠΈΠ΅ΠΉ Π² инфламмасомС каспазы-1. Показано, Ρ‡Ρ‚ΠΎ Ρ€ΠΎΠ»ΡŒ Π² рСгуляции воспалСния иммуносСнсоров Π½Π΅ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½ΠΎΠ³ΠΎ ΠΈ Π²Π½ΡƒΡ‚Ρ€ΠΈΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½ΠΎΠ³ΠΎ восприятия Π±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠΉ синСргСтична. ΠœΡƒΡ‚Π°Ρ†ΠΈΠΈ Π² TLR- ΠΈ NOD-Ρ€Π΅Ρ†Π΅ΠΏΡ‚ΠΎΡ€Π°Ρ… связаны с Π°ΡƒΡ‚ΠΎΠΈΠΌΡƒΠ½Π½Ρ‹ΠΌΠΈ Π²ΠΎΡΠΏΠ°Π»ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΌΠΈ синдромами. Π’ Π΄Π°Π½Π½ΠΎΠΌ ΠΎΠ±Π·ΠΎΡ€Π΅ рассмотрСны способы ΠΎΡ€Π³Π°Π½ΠΈΠ·ΠΌΠ° Ρ€Π°ΡΠΏΠΎΠ·Π½Π°Π²Π°Ρ‚ΡŒ Π²Π½ΡƒΡ‚Ρ€ΠΈΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹Π΅ ΠΏΠ°Ρ‚ΠΎΠ³Π΅Π½Ρ‹, описана ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΠ° ΠΈΡ… ΠΌΠΈΠΌΠΈΠΊΡ€ΠΈΠΈ ΠΎΡ‚ ΠΈΠΌΠΌΡƒΠ½Π½ΠΎΠΉ систСмы ΠΆΠΈΠ²ΠΎΡ‚Π½Ρ‹Ρ…, молСкулярныС ΠΌΠ΅Ρ…Π°Π½ΠΈΠ·ΠΌΡ‹ Ρ‚Π°ΠΊΠΈΡ… взаимодСйствий. РассмотрСны Ρ‚Π°ΠΊΠΆΠ΅ Π²Π°Ρ€ΠΈΠ°Π½Ρ‚Ρ‹ молСкулярных взаимодСйствий Ρ€Π΅Ρ†Π΅ΠΏΡ‚ΠΎΡ€ΠΎΠ² Π²Ρ€ΠΎΠΆΠ΄Π΅Π½Π½ΠΎΠ³ΠΎ ΠΈΠΌΠΌΡƒΠ½ΠΈΡ‚Π΅Ρ‚Π° с ΠΏΠ΅ΠΏΡ‚ΠΈΠ΄ΠΎΠ³Π»ΠΈΠΊΠ°Π½Π°ΠΌΠΈ, Π±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½ΠΎΠΉ Π”ΠΠš ΠΈ токсинами, ΠΊΠΎΠΌΠΏΠ°Ρ€Ρ‚ΠΌΠ΅Π½Ρ‚Π°ΠΌΠΈ ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹Ρ… стСнок, Π° Ρ‚Π°ΠΊΠΆΠ΅ Ρ€Π΅Ρ†Π΅ΠΏΡ‚ΠΎΡ€Π°ΠΌΠΈ Π±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ Ρ„Π»Π°Π³Π΅Π»Π»ΠΈΠ½Π°. ЦСлью Π΄Π°Π½Π½ΠΎΠ³ΠΎ исслСдования Π±Ρ‹Π» Π°Π½Π°Π»ΠΈΠ· соврСмСнного понимания гСнСтичСской ΠΈ молСкулярной структуры ΠΈΠΌΠΌΡƒΠ½Π½ΠΎΠ³ΠΎ ΠΎΡ‚Π²Π΅Ρ‚Π° Π½Π° Π±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½Ρ‹Π΅ Ρ„Π°ΠΊΡ‚ΠΎΡ€Ρ‹ ΠΎΠΊΡ€ΡƒΠΆΠ°ΡŽΡ‰Π΅ΠΉ срСды, Π° Ρ‚Π°ΠΊΠΆΠ΅ Π°Π½Π°Π»ΠΈΠ· ΠΌΠ΅Ρ…Π°Π½ΠΈΠ·ΠΌΠΎΠ² ΠΈ особСнностСй рСагирования ΠΎΡ€Π³Π°Π½ΠΈΠ·ΠΌΠ° ΠΆΠΈΠ²ΠΎΡ‚Π½Ρ‹Ρ…

    Aspects of the directional synthesis of carbon nanotubes to create hierarchical radio-absorbing composite materials

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    The conducted information review showed that there are various types of radio absorbing materials.Β  The expansion of the working wavelength range for radio-absorbing composites is possible due to the combined use of conductive fillers, characterized by different magnetic and dielectric characteristics and the value of electrical conductivity.Β  As a rule, the increase in the efficiency of radio absorption of materials is associated with an increase in the concentration of metal fillers in them, as a result of which the weight and size parameters increase proportionally.Β  To avoid this, the use of carbon nanomaterials, which have the ability to create self-organizing hierarchical structures in the bulk of the composite, allows.Β  Varying the composition of the catalytic systems of the CVD process allows directional synthesis of carbon nanomaterials with the necessary morphological characteristics.Β  To assess the effect of the composition of the catalyst on the morphology and structure of the synthesized CNTs, 3 Ni / MgO catalyst compositions with different contents of the active component (Ni) were selected.Β  The effectiveness of the obtained catalysts was determined by the specific yield of CNTs (gC/gkat).Β  The morphology and structure of the catalysts and the synthesized CNTs were studied by means of scanning by transmission electron microscopy. The use of a nickel-based catalyst provides the material with magnetic properties.Β  The diameter of carbon filiform formations synthesized on Ni/0.16MgO and Ni / 0.3MgO catalysts is ~ 30 Γ· 60Β nm.Β  The Ni/0.5MgO system is characterized by low productivity in one-dimensional nanostructures; the sample after the CVD process contains a large number of unstructured forms of carbon and an unchanged catalyst.Β  Structural diversity in carbon nanomaterials allows to obtain on their basis an effective hierarchical structure in the radio absorbing composite.
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