A comparative evaluation of macro- and microelement composition of plants of white lupine and soybean

The studies were conducted in the forest-steppe zone of Belgorod region. The soil cover was represented by typical chernozems and leached chernozems. The objective of the research was to analyze and assess the accumulation of major macro- and microelements in the plants of white lupine and soybean. It was found that the content of macroelements: nitrogen, phosphorus, potassium, sulfur in white lupine beans is lower than in so

Possibilities of using branched-chain amino acids for the treatment and prevention of sarcopenia in elderly and old patients (literature review)

Due to the high prevalence of sarcopenia among elderly and old patients, early prevention and treatment of sarcopenia and its complications are relevant. Protein supplements can be used to maintain muscle strength and mass during aging. The possibility of using branched-chain amino acids (BCAAs) in the treatment and prevention of sarcopenia in geriatric patients is of scientific interest. BCAAs promote the synthesis and inhibit the degradation of muscle tissue proteins, are involved in the regulation of tissue sensitivity to insulin, ammonia utilization, the tricarboxylic acid cycle, etc.Search strategy. The search for scientific articles for literature review was carried out in the PubMed and PubMed Central databases. The selection criterion was scientific articles published up to December 2022. We used the following search keywords: “branched-chain amino acids”, “BCAA”, “body composition”, “sarcopenia”, “aging”. The 2019 European Working Group on Sarcopenia in Older People 2 (EWGSOP2) Consensus was included in the list of articles.Conclusions. The possibility of using BCAAs in elderly and old patients for the prevention and treatment of sarcopenia is a relevant topic that continues to be actively studied. The effectiveness of BCAA supplementation in the diet is debatable as long as sufficient protein is consumed daily. On the other hand, BCAA supplementation may be justified in cases where it is not possible to consume enough high-quality protein in the diet. More research is needed on this topic

OPTICAL PROPERTIES OF (In2O3/SiO2)25 MULTILAYER STRUCTURES

(In2O3/SiO2)25 multilayer structures were obtained by ion-beam sputtering. The structure of (In2O3/SiO2)25 thin films are amorphous. Multilayer structures have high transparency and low electrical resistance, which makes them a promising material for transparent electronics.Работа была выполнена при поддержке государственного задания (№ FZGM-2020-0007)

Клинико-экономический анализ и оценка влияния на бюджет применения имплантируемых кардиовертеров-дефибрилляторов в Российской Федерации

Objective: to evaluate cost-effectiveness and budget impact of using single and dual chamber implantable cardioverter-defibrillators (ICD) adjunctive to the standard drug therapy (DT) compared to the standard DT alone for the primary and secondary prevention of sudden cardiac death (SCD).Material and methods. Original partitioned survival analysis model was developed to assess the cost-effectiveness of using ICD within the modelling horizon of 8 years. The following model outcomes were used: life years and quality-adjusted life years (QALY). Primary prevention model was focused on patients after myocardial infarction with left ventricular ejection fraction (LVEF) ≤30%, whilst secondary prevention model considered cardiac arrest survivors and/or patients diagnosed with ventricular tachycardia or ventricular fibrillation with LVEF ≤35%. The model summarizes treatment effect and costs for ICD and DT specific to the healthcare system of the Russian Federation (RF). The main scenario accounted for ICD implantation cost in accordance with general reimbursement price asserted in the high technology medical care list part 2 (HТMC 2). Additionally, alternative scenario of ICD reimbursement level was developed to account for general tariff split onto singleand dual-chamber ICD implantation reimbursement tariffs which can be financed through high technology medical care list part 1 (HТMC 1). Budget impact analysis compared the costs of using ICD within the current volume of the annual increase in ICD implantations and a threefold increased volume of ICD implantations.Results. By the end of the modelling period, additional 34% of patients survived in the ICD group compared to the DT group. Incremental cost-effectiveness ratio (ICER) per 1 QALY constituted 2.8 and 2.2 million rubles for primary and secondary prevention, respectively. ICER values are slightly above or lower than the willingness-to-pay threshold of 2.5 million rubles per 1 QALY in the RF in the segment of primary and secondary SCD prevention, respectively. Additional HТMC 1 scenario incorporating lower ICD implantation prices resulted in an average ICER drop by 13% compared to HTMC 2. Overall patient population requiring SCD prevention comprised of 7,161 and 3,341 patients in primary and secondary prevention, respectively. Budget impact analysis showed that threefold rise in the ICD implantations rate will require additional 648 million rubles for primary prevention cohort to provide additional 573 patients with ICD, and 230 million rubles for secondary prevention cohort with additional 267 patients covered with ICD. ICD reimbursement price drop within the HТMC 1 scenario will save 133 million rubles and allow to provide additional 143 patients with ICDs for a given budget.Conclusion. ICD is a cost-effective option of secondary prevention of SCD. Additional analysis of ICD reimbursement price drop drives ICER downwards to a considerable extent which in turn increases the accessibility of ICDs to patients. In scenario of ICD implantation financing within HТMC 1, ICD is established to be a cost-effective option for primary and secondary prevention of SCD in the RF.Цель: оценка клинико-экономической эффективности и анализ влияния на бюджет (АВБ) применения одно- и двухкамерных имплантируемых кардиовертеров-дефибрилляторов (ИКД) в сочетании со стандартной лекарственной терапией (ЛТ) по сравнению со стандартной ЛТ для первичной и вторичной профилактики внезапной сердечной смерти (ВСС).Материал и методы. Построена оригинальная модель распределенной выживаемости пациентов с риском ВСС для проведения анализа «затраты–эффективность» с горизонтом моделирования 8 лет. В качестве исходов модели были использованы годы жизни и годы жизни с поправкой на качество (англ. quality-adjusted life year, QALY). Модель первичной профилактики ВСС включала пациентов после инфаркта миокарда с фракцией выброса левого желудочка (ФВЛЖ) 30% и менее, модель вторичной профилактики ВСС – больных после остановки сердца и/или имеющих желудочковую тахикардию или фибрилляцию желудочков с ФВЛЖ 35% и менее. Модель позволяет прогнозировать затраты на лечение и исходы пациентов, использующих ИКД или ЛТ в условиях системы здравоохранения Российской Федерации (РФ). Основной сценарий учитывает стоимость имплантации прибора по единому тарифу для всех типов ИКД в рамках второго перечня высокотехнологичной медицинской помощи (ВМП 2). Дополнительно моделировали сценарий со снижением тарифа на имплантацию ИКД за счет разгруппировки существующего единого тарифа на два: для однои двухкамерных ИКД в отдельности в рамках первого перечня ВМП (ВМП 1). С помощью АВБ сравнивали затраты на использование ИКД в рамках текущего объема ежегодного прироста имплантаций ИКД и повышенного (трехкратного) объема прироста.Результаты. На конец горизонта моделирования дополнительный прирост выживаемости в группе ИКД по сравнению с группой ЛТ составил 34%. Инкрементальный показатель «затраты–эффективность» (англ. incremental cost-effectiveness ratio, ICER) за 1 QALY в основном сценарии составил 2,8 и 2,2 млн руб. в сегментах первичной и вторичной профилактики ВСС соответственно. Полученное значение по первичной профилактике незначительно превышает, а по вторичной профилактике находится ниже референтного значения ICER (порога готовности платить), составляющего в РФ 2,5 млн руб. за 1 QALY. Моделируемое снижение стоимости тарифа на установку ИКД в рамках перечня ВМП 1 улучшает затратную эффективность (снижает ICER) в среднем на 13% от сценария ВМП 2. Суммарная популяция пациентов, нуждающихся в первичной и вторичной профилактике ВСС, составляет около 7161 и 3341 человека соответственно. Моделирование трехкратного прироста числа ИКД по отношению к текущим объемам обеспеченности в АВБ позволяет дополнительно обеспечить 573 пациента в рамках первичной профилактики ВСС, затратив дополнительно 638 млн руб., и 267 пациентов в рамках вторичной профилактики ВСС при размере дополнительных затрат 230 млн руб. Снижение стоимости имплантации ИКД в сценарии ВМП 1 способствует повышению доступности данной технологии за счет высвобождения дополнительных средств в размере 133 млн руб., позволяющих выполнить дополнительные операции по установке приборов ИКД 143 пациентам при первичной и вторичной профилактике ВСС суммарно.Заключение. ИКД является затратно-эффективной технологией в сегменте вторичной профилактики ВСС. Снижение стоимости ИКД в результате разгруппировки тарифа ВМП 2 значительно повышает клинико-экономическую эффективность данной технологии и способствует ее доступности для пациентов. Таким образом, при финансировании имплантаций по разгруппированным тарифам в рамках перечня ВМП 1 ИКД является затратно-эффективной опцией первичной и вторичной профилактики ВСС в РФ

THE EXPECTORANT ACTIVITY RESEARCH OF PHYTOPREPARATIONS OF THE WILD AND CULTIVATED SPECIES OF THE SALVIA L. GENUS

The expectorant activity research of infusions and water-soluble polysaccharide complexes of Salvia genus plants was carried out on the model of studying of motor function of the ciliated epithelium of frog esophagus. Experimentally, it was found that the investigated phytopreparations have an expectorant activity to some extent. The most effective ones are the infusion (an increase of motor activity is 41,26 ± 2,14%) and a water-soluble polysaccharide complex of Salvia horminum L. (an increase of motor activity is 45,38 ± 4,24%), which exceed Salvia's officinalis effect in respect of the strength of pharmacological activity. The rest are close by the action of an expectorant activity to officinal species Salvia officinalis L

A comparative evaluation of macro- and microelement composition of plants of white lupine and soybean

The studies were conducted in the forest-steppe zone of Belgorod region. The soil cover was represented by typical chernozems and leached chernozems. The objective of the research was to analyze and assess the accumulation of major macro- and microelements in the plants of white lupine and soybean. It was found that the content of macroelements: nitrogen, phosphorus, potassium, sulfur in white lupine beans is lower than in so

Thermostimulated crystal structure transformation of the polymineral clay submicron particles

Abstract Changes in the structure of phyllosilicate microparticles of submicron fractions of polymineral clay with an average size of 290 nm, as well as changes in the positions of impurity ions of transition metals in the crystal lattice, were studied by X-ray diffraction analysis, Fourier transform infrared spectroscopy, and high-resolution electron paramagnetic resonance spectroscopy. The main composition of microparticles included clinochlore, montmorillonite, calcite, and quartz. Structural transformations were stimulated by heating the samples to 1200 K at a rate of 10 K/min. A decrease in the number of crystal structures of microparticles was recorded due to the amorphization of montmorillonite, the decomposition of calcite, and the formation of sillimanite. Structural rearrangements of crystal cells containing impurity paramagnetic ions Fe3+ and Mn2+ in submicron particles of clinochlore and montmorillonite, accompanied by displacements and changes in the chemical bonds of these ions, were recorded by the ion-electron paramagnetic resonance method. It is shown that when microparticles were heated to 1200 K, the impurity paramagnetic ions of transition metals did not go beyond their crystal cells

THERMOEMF OF THIN-FILM STRUCTURES In2O3/SiO2

Thin films (In2O3/SiO2)25 were by ion-beam sputtering. The effect of heat treatment on the phase composition and thermopower is studied. Increasing of annealing temperature – a thermopower was decrease. After annealing, the structure of thin films is preserved up to a temperature of 500°C.Данная работа выполнена при поддержке РФФИ (Грант №19-48-360010 р_а)