[Influence of Omega-3 PUFA on Non-invasive factors determining the risk of arrhYthmias eXcess and sudden cardiac death in patients with HFpEF with ischemic etiology (ONYX)].

Aim Patients with heart failure with reduced left ventricular (LV) ejection fraction (HFrEF) who have had acute myocardial infarction have an unfavorable prognosis, largely due to ventricular arrhythmias (VA) and risk of sudden cardiac death (SCD). The optimal treatment (triple neurohormonal blockade plus implantable cardioverter defibrillator and cardiac resynchronization therapy) reduced the risk of SCD primarily due to reverse cardiac remodeling, but has not solved this problem completely. Efficacy of purified ω-3 polyunsaturated fatty acid esters (PUFA) in low doses (1 g/day) in reducing VA and risk of SCD in HFrEF patients was demonstrated in two large randomized clinical trials.

[Combination therapy at an early stage of the novel coronavirus infection (COVID-19). Case series and design of the clinical trial "BromhexIne and Spironolactone for CoronаvirUs Infection requiring hospiTalization (BISCUIT)"].

The article focuses on effective treatment of the novel coronavirus infection (COVID-19) at early stages and substantiates the requirement for antiviral therapy and for decreasing the viral load to prevent the infection progression. The absence of a specific antiviral therapy for the SARS-CoV-2 virus is stated. The authors analyzed results of early randomized studies using lopinavir/ritonavir, remdesivir, and favipiravir in COVID-19 and their potential for the treatment of novel coronavirus infection.

[Proactive anti-inflammatory and anticoagulant therapy in the treatment of advanced stages of novel coronavirus infection (COVID-19). Case Series and Study Design: COLchicine versus ruxolitinib and secukinumab in open prospective randomIzed trial (COLORIT)].

The article is devoted to the treatment of the new coronavirus infection (COVID-19) in the advanced stages of the disease. The types of response of the immune system to the viral load of SARS-CoV-2 with the start of the inflammation process are considered. The situation is analyzed in detail in which the growing autoimmune inflammation (up to the development of a "cytokine storm") affects not only the pulmonary parenchyma, but also the endothelium of the small vessels of the lungs.

Model quantification of the light-induced thylakoid membrane processes in Synechocystis sp. PCC 6803 in vivo and after exposure to radioactive irradiation.

Measurements of OJIP-SMT patterns of fluorescence induction (FI) in Synechocystis sp. PCC 6803 (Synechocystis) cells on a time scale up to several minutes were mathematically treated within the framework of thylakoid membrane (T-M) model (Belyaeva et al., Photosynth Res 140:1-19, 2019) that was renewed to account for the state transitions effects.

Steroid pulse -therapy in patients With coronAvirus Pneumonia (COVID-19), sYstemic inFlammation And Risk of vEnous thRombosis and thromboembolism (WAYFARER Study).

Introduction Coronavirus pneumonia not only severely affects the lung tissue but is also associated with systemic autoimmune inflammation, rapid overactivation of cytokines and chemokines known as "cytokine storm", and a high risk of thrombosis and thromboembolism. Since there is no specific therapy for this new coronavirus infection (COVID-19), searching for an effective and safe anti-inflammatory therapy is critical.Materials and methods This study evaluated efficacy and safety of pulse therapy with high doses of glucocorticosteroids (GCS), methylprednisolone 1,000 mg for 3 days plus dexamethasone 8 mg for another 3-5 days, in 17 patients with severe coronavirus pneumonia as a part of retrospective comparative analysis (17 patients in control group).

[Modification of the of the cardiometabolic profile using combined therapy of the angiotensin receptor-neprilysin inhibitor and empagliflozin in comorbid patients with Chronic Heart Failure and type 2 Diabetes Mellitus].

Chronic heart failure (CHF) and type 2 diabetes mellitus (DM2) and very common comorbidities with bidirectional, mutually aggravating courses. DM2 is known as an independent risk factor of cardiovascular complications whereas a higher CHF functional class is associated with increased risk of DM2. At present time, hypoglycemic drugs of the gliflozin class and the angiotensin receptor-neprilysin inhibitor (ARNI) are widely discussed in connection with their use in the treatment of patients with CHF and DM.

[Therapeutic approaches to the Rational Use of trip-le combination therapy with a fixed combination of amlodipine, indapamide and perindopril arginine (TRIPLE COMBINATION) in patients with hypertension who do not control blood pressure on conventional treatment. (Description and main results of the TRIO program)].

Aim To study tactics of outpatient physicians in choosing the treatment when the previous double antihypertensive therapy (AHT) fails and to analyze the effectivity of an amlodipine/indapamide/perindopril arginine triple combination (TC).Material and methods The program included 1252 patients with arterial hypertension (AH); the TC group consisted of 992 (79.23 %) patients (38.

[Physical training in patients with chronic heart failure: level of involvement, as well as psychosocial, anamnestic and iatrogenic factors that determine the motivation to practice].

Introduction Physical exercise (PE) is a necessary part in the treatment of patients with chronic heart failure (CHF), which is stated in the European Society of Cardiology guidelines and the Russian Heart Failure Society guidelines. However, this type of non-drug treatment is still not sufficiently used in HF patients in Russia.Aim To study the current involvement of HF patients in PT and to describe psychosocial factors that influence the patients' willingness to exercise and potential barriers and motivations for PE.

[The stages of history of national clinic of internal diseases: The Soviet medicine (stage 4)].

The publication continues the topic of previous article and develops the theme of periodization of clinical internal medicine in Russia for last 200 years. The discussion covers the fourth stage - the Soviet period of internal medicine in 1920s - 1950s that resulted in crisis. The authors, using historical examples, illustrate the need to take into account historical and social processes in studying the development of medicine.

A Study of the Influence of the HCl Concentration on the Composition and Structure of (Hydroxy)Arylsiloxanes from the Hydrolysis-Condensation Reaction of Aryltrichlorosilanes.

The hydrolysis-condensation reactions of -tolyl, -chlorophenyl, and -naphtyl-trichlorsilanes, (, , and , respectively) in water-acetone solutions were examined for how they were influenced by the change in the concentration of HCl (C). The composition of the products was monitored by Si NMR spectroscopy and atmospheric pressure chemical ionization mass spectrometry (APCI-MS). The acidity of the medium was shown to affect the yields of the products, and so, what products were formed.

[200 years of history of National clinic of internal diseases: issues of periodization (stages 1-3)].

The main development of the clinical internal medicine in Russia took place over the past 200 years. To understand the pattern of this process, we explored its possible subdivision into phases (periods). This article presents the first part of the proposed periodization describing the characteristics and time frame of the first three stages (from the beginning of the 19th century to the late 1910s).

[The personalized medicine and organization of geriatric care of population].

The article presents advisability of applying approaches of personalized medicine to solve problems of modern gerontology and geriatrics. The actuality of issue is conditioned by population aging due to rapid increasing of both percentage and absolute number of elderly people in total population of most countries. The ideology of personalized medicine or P4 medicine is targeted to developing individual preventive and therapeutic activities for specific personality.

[The comparative characteristic of methods of flow cytofluorometry and optical microscopy in qualitative study of urine elements.].

The comparative study was carried out concerning methods of flow cytofluorometry and optical microscopy in analysis of urine elements with the purpose of establishing the necessity of verification by physician the results of clinical diagnostic laboratory obtained by the analyzer. The final data concerning comparison of results obtained by two methodologies for various groups of pathology. The participation of physician in validation of results can be avoided in the groups with normal and exceeding standard values of content of corpuscular elements of urine.

Hybrid complexes of photosynthetic reaction centers and quantum dots in various matrices: resistance to UV irradiation and heating.

The effects of ultraviolet (UV) irradiation (up to 0.6 J/cm) and heating (65 °C, 20 min) on the absorption spectra and electron transfer in dehydrated film samples of photosynthetic reaction centers (RCs) from purple bacterium Rhodobacter (Rb.) sphaeroides, as well as in hybrid structures consisting of RCs and quantum dots (QDs), have been studied.

[The monitoring of sensitivity of natural strains and clinical isolates of yeast fungus to anti-mycotics.].

The disc diffusion technique was applied to test sensitivity to anti-mycotics of 15 strains of fungi genus Candida separated from natural substrates and 25 clinical isolates. The fungi were of species C. albicans, C.

The kinetic model for slow photoinduced electron transport in the reaction centers of purple bacteria.

The present work is related to the investigation of slow kinetics of electron transport in the reaction centers (RCs) of Rhodobacter sphaeroides. Experimental data on the absorption kinetics of aqueous solutions of reaction centers at different modes of photoexcitation are given. It is shown that the kinetics of oxidation and reduction of RCs are well described by the sum of three exponential functions.

Synergistic fibrinolysis: The combined effects of tissue plasminogen activator and recombinant staphylokinase in vitro.

Background: Mechanisms of fibrin-specificity of tissue plasminogen activator (tPA) and recombinant staphylokinase (STA) are different, therefore we studied in vitro the possibility of the synergy of their combined thrombolytic action.

Methods: Thrombolytic effects of tPA, STA and their combinations were measured by lysis rate of human plasma clot and side effects were evaluated by decreasing in fibrinogen, plasminogen and α2-antiplasmin levels in the surrounding plasma at 37°C in vitro.

Results: STA and tPA induced dose- and time-dependent clot lysis: 50% lysis in 2 h was obtained with 30 nM tPA and 75 nM STA, respectively.

Fractal globules: a new approach to artificial molecular machines.

The over-damped relaxation of elastic networks constructed by contact maps of hierarchically folded fractal (crumpled) polymer globules was investigated in detail. It was found that the relaxation dynamics of an anisotropic fractal globule is very similar to the behavior of biological molecular machines like motor proteins. When it is perturbed, the system quickly relaxes to a low-dimensional manifold, M, with a large basin of attraction and then slowly approaches equilibrium, not escaping M.

A halogenophilic pathway in the reactions of transition metal carbonyl anions with [(η⁶-iodobenzene)Cr(CO)₃].

The paper provides the first example of formal nucleophilic substitution by the halogenophilic pathway in Cr(CO)3 complexes of haloarenes with metal carbonyl anions. All metal carbonyl anions examined attack [(η(6)-iodobenzene)Cr(CO)3] at halogen, which is shown by aryl carbanion scavenging with t-BuOH. The reaction with K[CpFe(CO)2] gives only the dehalogenated arene, but the reaction with K[Cp*Fe(CO)2] (Cp* = η(5)-C5Me5) results in nucleophilic substitution to give [(η(6)-C6H5FeCp*(CO)2)Cr(CO)3].

Radical-chain oxidative addition mechanism for the reaction of an [Re(CO)5]- anion with α-bromostilbene.

E-α-Bromostilbene spontaneously reacts with Na[Re(CO)(5)] at 22 °C in THF to give Na[ReBr(CO)(4){Z-C(Ph)=CHPh}] and Na[Re(2)(CO)(9){Z-C(Ph)=CHPh}] as the main products. Z-α-Bromostilbene is less reactive, but gives the same products. The reaction is stimulated by visible light or a source of solvated electrons (NaK(2.

The rate of Q(x)→Q(y) relaxation in bacteriochlorophylls of reaction centers from Rhodobacter sphaeroides determined by kinetics of the ultrafast carotenoid bandshift.

Transient absorption changes induced by excitation of isolated reaction centers (RCs) from Rhodobacter sphaeroides with 600nm laser pulses of 20fs (full width at half maximum) were monitored in the wavelength region of 420-560nm. The spectral features of the spectrum obtained are characteristic for an electrochromic band shift of the single carotenoid (Car) molecule spheroidene, which is an integral constituent of these RCs. This effect is assigned to an electrochromic bandshift of Car due to the local electric field of the dipole moment formed by electronic excitation of bacteriochlorophyll (BChl) molecule(s) in the neighborhood of Car.

Photosystem 2 effective fluorescence cross-section of cyanobacterium Synechocystis sp. PCC6803 and its mutants.

The effective fluorescence cross-section of photosystem 2 (PS2) was defined by measurements of chlorophyll a fluorescence induction curves for the wild type of the unicellular cyanobacterium Synechocystis sp. PCC6803, C-phycocyanin deficient mutant (CK), and mutant that totally lacks phycobilisomes (PAL). It was shown that mutations lead to a strong decrease of the PS2 effective fluorescence cross-section.