22 research outputs found

    Π Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠΈ синтСза Π½Π°Π½ΠΎΡ€Π°Π·ΠΌΠ΅Ρ€Π½Ρ‹Ρ… частиц ΠΌΠ΅Ρ‚Π°Π»Π»ΠΎΠ² ΠΏΠ»Π°Ρ‚ΠΈΠ½ΠΎΠ²ΠΎΠΉ Π³Ρ€ΡƒΠΏΠΏΡ‹ Π½Π° повСрхности носитСля с Ρ†Π΅Π»ΡŒΡŽ создания ΠΊΠ°Ρ‚Π°Π»ΠΈΠ·Π°Ρ‚ΠΎΡ€ΠΎΠ² для ΠΏΠΎΡ€Ρ‚Π°Ρ‚ΠΈΠ²Π½Ρ‹Ρ… Π³Π΅Π½Π΅Ρ€Π°Ρ‚ΠΎΡ€ΠΎΠ² Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄Π° Π½Π° основС Π³ΠΈΠ΄Ρ€ΠΎΠ»ΠΈΠ·Π° Π±ΠΎΡ€Π³ΠΈΠ΄Ρ€ΠΈΠ΄Π° натрия.

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    The reaction properties of supported rhodium nanoparticles depend on degree of interaction between rhodium chloride and support at the stage of preparation Rh/TiO2 catalysts. Their catalytic properties are defined by its calcinations temperature and presence of impurity on support surfaceΠ Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Ρ‹ Π½Π°ΡƒΡ‡Π½Ρ‹Π΅ основы Π½Π°ΠΏΡ€Π°Π²Π»Π΅Π½Π½ΠΎΠ³ΠΎ синтСза Π°ΠΊΡ‚ΠΈΠ²Π½Ρ‹Ρ… ΠΈ ΡΡ‚Π°Π±ΠΈΠ»ΡŒΠ½Ρ‹Ρ… ΠΊΠ°Ρ‚Π°Π»ΠΈΠ·Π°Ρ‚ΠΎΡ€ΠΎΠ² для ΠΏΠΎΡ€Ρ‚Π°Ρ‚ΠΈΠ²Π½Ρ‹Ρ… Π³Π΅Π½Π΅Ρ€Π°Ρ‚ΠΎΡ€ΠΎΠ² Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄Π°. Π’Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Ρ‹ исслСдования Rh/TiO2 ΠΊΠ°Ρ‚Π°Π»ΠΈΠ·Π°Ρ‚ΠΎΡ€ΠΎΠ² ΠΈ испытания ΠΈΡ… Π² Ρ€Π΅Π°ΠΊΡ†ΠΈΠΈ Π³ΠΈΠ΄Ρ€ΠΎΠ»ΠΈΠ·Π° Π±ΠΎΡ€Π³ΠΈΠ΄Ρ€ΠΈΠ΄Π° натрия

    Клинико-психологичСскиС особСнности Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… с ΠΎΡ‚Ρ€Π°Π²Π»Π΅Π½ΠΈΠ΅ΠΌ Π³ΠΈΠΏΠΎΡ‚Π΅Π½Π·ΠΈΠ²Π½Ρ‹ΠΌΠΈ ΠΈ антиаритмичСскими ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚Π°ΠΌΠΈ Π² Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π΅ ΡΡƒΠΈΡ†ΠΈΠ΄Π°Π»ΡŒΠ½Ρ‹Ρ… дСйствий

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    The effective care for patients with self-poisoning with antihypertensive and antiarrhythmic drugs is associated with taking into account both clinical and adverse social, psychological and environmental stress factors. To identify their specifics, a retrospective analysis of 120 medical records and a clinical and psychological examination of 20 patients with antihypertensive and antiarrhythmic drugs self-poisoning and a comparison group of 34 patients with selfpoisoning with psychotropic drugs were carried out. It has been shown that the risk group for re-suicide in self-poisoning with antihypertensive and antiarrhythmic drugs is about 30% of patients. Risk factors are depressive symptoms that persist before discharge from the hospital, as well as dysfunctional personality traits (perfectionism in the form of increased preoccupation with the assessments of other people and frequent unfavorable comparisons with them, experiencing loneliness and isolation, increased impulsivity and a feeling of hostility from others) and unproductive ways of coping with stress (ruminative thinking or repetitive unpleasant and unproductive thoughts about anergy, lack of strength and loneliness). The results of the study and the developed psychodiagnostic complex can be used to identify targets for urgent psychological assistance and screening for the risk of re-suicide.ЭффСктивная ΠΏΠΎΠΌΠΎΡ‰ΡŒ ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚Π°ΠΌ с самоотравлСниями Π³ΠΈΠΏΠΎΡ‚Π΅Π½Π·ΠΈΠ²Π½Ρ‹ΠΌΠΈ ΠΈ антиаритмичСскими ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚Π°ΠΌΠΈ (Π“ΠΈΠΠŸ) связана с ΡƒΡ‡Π΅Ρ‚ΠΎΠΌ ΠΊΠ°ΠΊ клиничСских, Ρ‚Π°ΠΊ ΠΈ нСблагоприятных ΡΠΎΡ†ΠΈΠ°Π»ΡŒΠ½Ρ‹Ρ…, психологичСских ΠΈ срСдовых стрСссовых Ρ„Π°ΠΊΡ‚ΠΎΡ€ΠΎΠ². Для выявлСния ΠΈΡ… спСцифики Π±Ρ‹Π»ΠΈ ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Ρ‹ рСтроспСктивный Π°Π½Π°Π»ΠΈΠ· 120 мСдицинских ΠΊΠ°Ρ€Ρ‚ ΠΈ ΠΊΠ»ΠΈΠ½ΠΈΠΊΠΎ-психологичСскоС обслСдованиС 20 ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠ² с самоотравлСниями Π“ΠΈΠΠŸ ΠΈ Π³Ρ€ΡƒΠΏΠΏΡ‹ сравнСния β€” 34 ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠ² с самоотравлСниями психотропными ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚Π°ΠΌΠΈ. Показано, Ρ‡Ρ‚ΠΎ Π³Ρ€ΡƒΠΏΠΏΠ° риска ΠΏΠΎΠ²Ρ‚ΠΎΡ€Π½ΠΎΠ³ΠΎ суицида ΠΏΡ€ΠΈ самоотравлСниях Π“ΠΈΠΠŸ составляСт ΠΎΠΊΠΎΠ»ΠΎ 30% ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠ². Π€Π°ΠΊΡ‚ΠΎΡ€Π°ΠΌΠΈ риска Π²Ρ‹ΡΡ‚ΡƒΠΏΠ°ΡŽΡ‚ ΡΠΎΡ…Ρ€Π°Π½ΡΡŽΡ‰Π°ΡΡΡ ΠΏΠ΅Ρ€Π΅Π΄ выпиской ΠΈΠ· стационара дСпрСссивная симптоматика, Π° Ρ‚Π°ΠΊΠΆΠ΅ Π΄ΠΈΡΡ„ΡƒΠ½ΠΊΡ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½Ρ‹Π΅ личностныС Ρ‡Π΅Ρ€Ρ‚Ρ‹ (ΠΏΠ΅Ρ€Ρ„Π΅ΠΊΡ†ΠΈΠΎΠ½ΠΈΠ·ΠΌ Π² Ρ„ΠΎΡ€ΠΌΠ΅ ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½Π½ΠΎΠΉ озабочСнности ΠΎΡ†Π΅Π½ΠΊΠ°ΠΌΠΈ Π΄Ρ€ΡƒΠ³ΠΈΡ… людСй ΠΈ частыми Π½Π΅Π²Ρ‹Π³ΠΎΠ΄Π½Ρ‹ΠΌΠΈ сравнСниями сСбя с Π½ΠΈΠΌΠΈ, ΠΏΠ΅Ρ€Π΅ΠΆΠΈΠ²Π°Π½ΠΈΠ΅ одиночСства ΠΈ изоляции, ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½Π½Π°Ρ ΠΈΠΌΠΏΡƒΠ»ΡŒΡΠΈΠ²Π½ΠΎΡΡ‚ΡŒ ΠΈ ΠΎΡ‰ΡƒΡ‰Π΅Π½ΠΈΠ΅ враТдСбности ΠΎΠΊΡ€ΡƒΠΆΠ°ΡŽΡ‰ΠΈΡ…) ΠΈ Π½Π΅ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΈΠ²Π½Ρ‹Π΅ способы совладания со стрСссом (Ρ€ΡƒΠΌΠΈΠ½Π°Ρ‚ΠΈΠ²Π½ΠΎΠ΅ ΠΌΡ‹ΡˆΠ»Π΅Π½ΠΈΠ΅ ΠΈΠ»ΠΈ ΠΏΠΎΠ²Ρ‚ΠΎΡ€ΡΡŽΡ‰ΠΈΠ΅ΡΡ нСприятныС ΠΈ Π½Π΅ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΈΠ²Π½Ρ‹Π΅ Ρ€Π°Π·ΠΌΡ‹ΡˆΠ»Π΅Π½ΠΈΡ Π½Π° Ρ‚Π΅ΠΌΡƒ Π°Π½Π΅Ρ€Π³ΠΈΠΈ, отсутствия сил ΠΈ одиночСства). Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ исслСдования ΠΈ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Π½Ρ‹ΠΉ психодиагностичСский комплСкс ΠΌΠΎΠ³ΡƒΡ‚ Π±Ρ‹Ρ‚ΡŒ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Π½Ρ‹ для выявлСния мишСнСй срочной психологичСской ΠΏΠΎΠΌΠΎΡ‰ΠΈ ΠΈ скрининга риска ΠΏΠΎΠ²Ρ‚ΠΎΡ€Π½ΠΎΠ³ΠΎ суицида

    Flow cytometry sorting of cells infected with African swine fever virus

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    The African swine fever panzooticΒ  is continuingΒ  to spread,Β  and the numberΒ  of affected countries and material losses are increasing. In particular, India, Papua New Guinea, Malaysia, Greece and Bhutan joined the list of ASF infected countries in 2020–2021. The disease control is hinderedΒ  by the lack of commercially available and effective vaccines, which, in its turn, is attributableΒ  to the insufficient knowledge of ASF pathogenesisΒ  and immune defense against the disease. The use of attenuated virus variants enables a thoroughΒ  investigation of the factors influencing the virulence of African swine fever virus and the immuneΒ  responseΒ  to it. This involves the use of naturally attenuated virus variants, as well as of the variants attenuated by a long-term passaging of the virus in cell cultures. However, virulence heterogeneity characteristic of the ASF virus population, necessitatesΒ  the additional selection of infected cells for the virus cloning. Conventional culture-based techniques for virus particle cloning are rather time- and labour-consuming;Β  it is therefore appropriateΒ  to use flow cytometry cell sorting for the selection and cloning of virus infected cells with a view of selectingΒ  homologousΒ  virus lineages.Β  The paperΒ  presentsΒ  the results of sortingΒ  of African greenΒ  monkey kidney cells (CV-1) and porcine bone marrow cells infected with African swine fever virus; the cells were sorted into the 96-well culture plates using a MoFloΒ  AstriosΒ Β  EQ cell sorter in order to isolate a population of the virus originating from one infected cell. After the single cell sorting of the infected cell cultures into the 96-well plates, ASF positive cell detectionΒ  rates in the plate wells were 30% for porcine bone marrow cells and 20% for CV-1

    Π­ΠΏΠΈΠΊΠ°Ρ€Π΄ΠΈΠ°Π»ΡŒΠ½Π°Ρ трансплантация пластов ΠΈΠ· ΠΌΠ΅Π·Π΅Π½Ρ…ΠΈΠΌΠ°Π»ΡŒΠ½Ρ‹Ρ… ΡΡ‚Ρ€ΠΎΠΌΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΊΠ»Π΅Ρ‚ΠΎΠΊ ΠΆΠΈΡ€ΠΎΠ²ΠΎΠΉ ΠΊΠ»Π΅Ρ‚Ρ‡Π°Ρ‚ΠΊΠΈ способствуСт Π°ΠΊΡ‚ΠΈΠ²Π°Ρ†ΠΈΠΈ эпикарда ΠΈ стимулируСт Π°Π½Π³ΠΈΠΎΠ³Π΅Π½Π΅Π· ΠΏΡ€ΠΈ ΠΈΠ½Ρ„Π°Ρ€ΠΊΡ‚Π΅ ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄Π° (ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½ΠΎΠ΅ исслСдованиС)

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    Aim: to evaluate the impact of tissue-engineered structures (TES) transplantation based on mesenchymal stromal cell (MSC) sheets in myocardial infarction on the activation of the epicardial cell pool and vascularization of the damaged zone.Materials and methods. Mesenchymal stromal cells were obtained from samples of subcutaneous fat of Wistar rats and C57Bl/6 mice. Tissue engineering structures were obtained by culturing cell sheets on thermosensitive plates (Nunc Dishes with UpCell Surface). Transplantation of TESs was performed after myocardial infarction modeling in rats by ligation of the anterior descending coronary artery. Transplant cells and damaged zones were assessed using immunofluorescent staining of myocardial cryosections. The impact of MSC secretion products on the migration activity of epicardial cells in vitro was evaluated using the explant culture method.Results. MSCs in TESs after transplantation remain viable and induce activation of the epicardial cell pool and local increase of the damaged zone vascularization. The in vitro experiments showed that the conditioned environment of MSCs stimulates the migratory activity of epicardial cells and initiates the formation of activated Wt1/POD1 precursor cells.Conclusion. TES transplantation on the basis of MSC sheets seems to be a promising approach for effective delivery of viable cells into myocardium to activate the epicardial cellular niche and reparative angiogenesis.ЦСль исслСдования: ΠΎΡ†Π΅Π½ΠΈΡ‚ΡŒ влияниС трансплантации Ρ‚ΠΊΠ°Π½Π΅ΠΈΠ½ΠΆΠ΅Π½Π΅Ρ€Π½Ρ‹Ρ… конструкций (ВИК) Π½Π° основС пластов ΠΌΠ΅Π·Π΅Π½Ρ…ΠΈΠΌΠ°Π»ΡŒΠ½Ρ‹Ρ… ΡΡ‚Ρ€ΠΎΠΌΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΊΠ»Π΅Ρ‚ΠΎΠΊ (МБК) ΠΏΡ€ΠΈ ΠΈΠ½Ρ„Π°Ρ€ΠΊΡ‚Π΅ ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄Π° Π½Π° Π°ΠΊΡ‚ΠΈΠ²Π°Ρ†ΠΈΡŽ ΡΠΏΠΈΠΊΠ°Ρ€Π΄ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΏΡƒΠ»Π° ΠΊΠ»Π΅Ρ‚ΠΎΠΊ ΠΈ Π²Π°ΡΠΊΡƒΠ»ΡΡ€ΠΈΠ·Π°Ρ†ΠΈΡŽ Π·ΠΎΠ½Ρ‹ поврСТдСния.ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. МБК ΠΏΠΎΠ»ΡƒΡ‡ΠΈΠ»ΠΈ ΠΈΠ· ΠΎΠ±Ρ€Π°Π·Ρ†ΠΎΠ² ΠΏΠΎΠ΄ΠΊΠΎΠΆΠ½ΠΎΠΉ ΠΆΠΈΡ€ΠΎΠ²ΠΎΠΉ ΠΊΠ»Π΅Ρ‚Ρ‡Π°Ρ‚ΠΊΠΈ крыс Π»ΠΈΠ½ΠΈΠΈ Wistar ΠΈ ΠΌΡ‹ΡˆΠ΅ΠΉ Π»ΠΈΠ½ΠΈΠΈ C57Bl/6. ВИК ΠΏΠΎΠ»ΡƒΡ‡ΠΈΠ»ΠΈ ΠΏΡƒΡ‚Π΅ΠΌ ΠΊΡƒΠ»ΡŒΡ‚ΠΈΠ²ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡ пластов ΠΊΠ»Π΅Ρ‚ΠΎΠΊ Π½Π° Ρ‡Π°ΡˆΠΊΠ°Ρ… с Ρ‚Π΅Ρ€ΠΌΠΎΡ‡ΡƒΠ²ΡΡ‚Π²ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΌ ΠΏΠΎΠΊΡ€Ρ‹Ρ‚ΠΈΠ΅ΠΌ (Nunc Dishes with UpCell Surface). Π’Ρ€Π°Π½ΡΠΏΠ»Π°Π½Ρ‚Π°Ρ†ΠΈΡŽ ВИК ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ послС модСлирования ΠΈΠ½Ρ„Π°Ρ€ΠΊΡ‚Π° ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄Π° Ρƒ крысы ΠΏΡƒΡ‚Π΅ΠΌ пСрСвязки ΠΏΠ΅Ρ€Π΅Π΄Π½Π΅ΠΉ нисходящСй ΠΊΠΎΡ€ΠΎΠ½Π°Ρ€Π½ΠΎΠΉ Π°Ρ€Ρ‚Π΅Ρ€ΠΈΠΈ. ΠžΡ†Π΅Π½ΠΊΡƒ состояния ΠΊΠ»Π΅Ρ‚ΠΎΠΊ трансплантата ΠΈ Π·ΠΎΠ½Ρ‹ поврСТдСния ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ с использованиСм иммунофлуорСсцСнтного ΠΎΠΊΡ€Π°ΡˆΠΈΠ²Π°Π½ΠΈΡ криосрСзов ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄Π°. Для ΠΎΡ†Π΅Π½ΠΊΠΈ влияния ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΎΠ² сСкрСции МБК Π½Π° ΠΌΠΈΠ³Ρ€Π°Ρ†ΠΈΠΎΠ½Π½ΡƒΡŽ Π°ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ ΠΊΠ»Π΅Ρ‚ΠΎΠΊ эпикарда in vitro использовали ΠΌΠ΅Ρ‚ΠΎΠ΄ эксплантной ΠΊΡƒΠ»ΡŒΡ‚ΡƒΡ€Ρ‹.Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. МБК Π² составС ВИК послС трансплантации ΡΠΎΡ…Ρ€Π°Π½ΡΡŽΡ‚ ΠΆΠΈΠ·Π½Π΅ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡ‚ΡŒ ΠΈ Π²Ρ‹Π·Ρ‹Π²Π°ΡŽΡ‚ Π°ΠΊΡ‚ΠΈΠ²Π°Ρ†ΠΈΡŽ ΡΠΏΠΈΠΊΠ°Ρ€Π΄ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΏΡƒΠ»Π° ΠΊΠ»Π΅Ρ‚ΠΎΠΊ ΠΈ локальноС ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½ΠΈΠ΅ васкуляризации Π·ΠΎΠ½Ρ‹ поврСТдСния. ЭкспСримСнты in vitro ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ, Ρ‡Ρ‚ΠΎ кондиционированная срСда МБК ΠΎΠΊΠ°Π·Ρ‹Π²Π°Π΅Ρ‚ ΡΡ‚ΠΈΠΌΡƒΠ»ΠΈΡ€ΡƒΡŽΡ‰Π΅Π΅ воздСйствиС Π½Π° ΠΌΠΈΠ³Ρ€Π°Ρ†ΠΈΠΎΠ½Π½ΡƒΡŽ Π°ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ ΠΊΠ»Π΅Ρ‚ΠΎΠΊ эпикарда ΠΈ Π²Ρ‹Π·Ρ‹Π²Π°Π΅Ρ‚ ΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Π½ΠΈΠ΅ Π°ΠΊΡ‚ΠΈΠ²ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Ρ… Wt1/POD1 ΠΊΠ»Π΅Ρ‚ΠΎΠΊ-ΠΏΡ€Π΅Π΄ΡˆΠ΅ΡΡ‚Π²Π΅Π½Π½ΠΈΡ†.Π—Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅. Врансплантация ВИК Π½Π° основС пластов МБК прСдставляСтся Ρ€Π°Ρ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½Ρ‹ΠΌ ΠΏΠΎΠ΄Ρ…ΠΎΠ΄ΠΎΠΌ для эффСктивной доставки ТизнСспособных ΠΊΠ»Π΅Ρ‚ΠΎΠΊ Π² ΠΌΠΈΠΎΠΊΠ°Ρ€Π΄ с Ρ†Π΅Π»ΡŒΡŽ Π°ΠΊΡ‚ΠΈΠ²ΠΈΡ€ΡƒΡŽΡ‰Π΅Π³ΠΎ воздСйствия Π½Π° ΡΠΏΠΈΠΊΠ°Ρ€Π΄ΠΈΠ°Π»ΡŒΠ½ΡƒΡŽ ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½ΡƒΡŽ Π½ΠΈΡˆΡƒ ΠΈ Ρ€Π΅ΠΏΠ°Ρ€Π°Ρ‚ΠΈΠ²Π½Ρ‹ΠΉ Π°Π½Π³ΠΈΠΎΠ³Π΅Π½Π΅Π·

    Development of synthesis of supported noble metal nanoparticles for preparation of catalysts used in portable hydrogen generators based on sodium borohydride hydrolysis

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    The reaction properties of supported rhodium nanoparticles depend on degree of interaction between rhodium chloride and support at the stage of preparation Rh/TiO2 catalysts. Their catalytic properties are defined by its calcinations temperature and presence of impurity on support surfac

    Epicardial Transplantation of Adipose Mesenchymal Stromal Cell Sheets Promotes Epicardial Activation and Stimulates Angiogenesis in Myocardial Infarction (Experimental Study)

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    Aim: to evaluate the impact of tissue-engineered structures (TES) transplantation based on mesenchymal stromal cell (MSC) sheets in myocardial infarction on the activation of the epicardial cell pool and vascularization of the damaged zone.Materials and methods. Mesenchymal stromal cells were obtained from samples of subcutaneous fat of Wistar rats and C57Bl/6 mice. Tissue engineering structures were obtained by culturing cell sheets on thermosensitive plates (Nunc Dishes with UpCell Surface). Transplantation of TESs was performed after myocardial infarction modeling in rats by ligation of the anterior descending coronary artery. Transplant cells and damaged zones were assessed using immunofluorescent staining of myocardial cryosections. The impact of MSC secretion products on the migration activity of epicardial cells in vitro was evaluated using the explant culture method.Results. MSCs in TESs after transplantation remain viable and induce activation of the epicardial cell pool and local increase of the damaged zone vascularization. The in vitro experiments showed that the conditioned environment of MSCs stimulates the migratory activity of epicardial cells and initiates the formation of activated Wt1/POD1 precursor cells.Conclusion. TES transplantation on the basis of MSC sheets seems to be a promising approach for effective delivery of viable cells into myocardium to activate the epicardial cellular niche and reparative angiogenesis
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