Clinical, Anamnestic, and Demographic Characteristics of Patients with Myocardial Infarction in Russian Federation According to the Russian Registry of Acute Myocardial Infarction - REGION-IM.

AIM: Based on data from the Russian REGION-MI registry, to characterize patients with myocardial infarction (MI) hospitalized in Russian hospitals, describe their historical, demographic, and clinical characteristics, and compare the results with the data of previous Russian and international registries of acute coronary syndrome. MATERIAL AND METHODS: REGION-MI is a multicenter prospective observational study. The follow-up period was divided into three stages: during the hospital stay, at 6 and 12 months after the inclusion in the registry. Demographic and historic data and information about the present case of MI were entered into the patient's individual record card. RESULTS: The median age of all patients was 63 years; 68% of patients were men. The mean age of women was older than that of men. Among all MI cases, 70% were ST-segment elevation myocardial infarction (STEMI). Patients with non-ST-segment elevation myocardial infarction (NSTEMI) were older and had more comorbidities than patients with STEMI. The median time from the first symptoms to ECG recording was two hours, and from the first symptoms to CAG 7 hours. CAG was performed in 91% of patients with STEMI and 84% of patients with NSTEMI. Stenting was performed in 69% of patients. Although many patients had a complicated cardiovascular history, at the time of admission only 31.5% of patients were taking at least one drug from the groups of antiplatelets, oral anticoagulants, statins, and beta-blockers. CONCLUSION: Patients with MI in the Russian Federation are younger than patients with MI in European countries. Among the clinical and historical characteristics, conspicuous is the presence of modifiable risk factors in many patients, as well as the presence of a previous diagnosis of ischemic heart disease. Furthermore, a small proportion of patients took statins, antiplatelet agents or anticoagulants at the outpatient stage, which indicates a great reserve of both primary and secondary prevention of cardiovascular diseases in the Russian Federation. The delayed seeking medical help is also noticeable, which indicates the need for increasing the public awareness of the symptoms of MI and the importance of timely hospitalization.

Final Results of GERDA on the Two-Neutrino Double-ß Decay Half-Life of

We present the measurement of the two-neutrino double-ß decay rate of ^{76}Ge performed with the GERDA Phase II experiment. With a subset of the entire GERDA exposure, 11.8 kg yr, the half-life of the process has been determined: T_{1/2}^{2ν}=(2.022±0.018_{stat}±0.038_{syst})×10^{21} yr. This is the most precise determination of the ^{76}Ge two-neutrino double-ß decay half-life and one of the most precise measurements of a double-ß decay process. The relevant nuclear matrix element can be extracted: M_{eff}^{2ν}=(0.101±0.001).

Erratum: First Search for Bosonic Superweakly Interacting Massive Particles with Masses up to 1 MeV/c

This corrects the article DOI: 10.1103/PhysRevLett.125.011801.

First Search for Bosonic Superweakly Interacting Massive Particles with Masses up to 1 MeV/c

We present the first search for bosonic superweakly interacting massive particles (super-WIMPs) as keV-scale dark matter candidates performed with the GERDA experiment. GERDA is a neutrinoless double-ß decay experiment which operates high-purity germanium detectors enriched in ^{76}Ge in an ultralow background environment at the Laboratori Nazionali del Gran Sasso (LNGS) of INFN in Italy. Searches were performed for pseudoscalar and vector particles in the mass region from 60 keV/c^{2} to 1 MeV/c^{2}. No evidence for a dark matter signal was observed, and the most stringent constraints on the couplings of super-WIMPs with masses above 120 keV/c^{2} have been set. As an example, at a mass of 150 keV/c^{2} the most stringent direct limits on the dimensionless couplings of axionlike particles and dark photons to electrons of g_{ae}<3×10^{-12} and α^{'}/α<6.5×10^{-24} at 90% credible interval, respectively, were obtained.

Final Results of GERDA on the Search for Neutrinoless Double-ß Decay.

The GERmanium Detector Array (GERDA) experiment searched for the lepton-number-violating neutrinoless double-ß (0νßß) decay of ^{76}Ge, whose discovery would have far-reaching implications in cosmology and particle physics. By operating bare germanium diodes, enriched in ^{76}Ge, in an active liquid argon shield, GERDA achieved an unprecedently low background index of 5.2×10^{-4} counts/(keV kg yr) in the signal region and met the design goal to collect an exposure of 100 kg yr in a background-free regime. When combined with the result of Phase I, no signal is observed after 127.2 kg yr of total exposure. A limit on the half-life of 0νßß decay in ^{76}Ge is set at T_{1/2}>1.8×10^{26} yr at 90% C.L., which coincides with the sensitivity assuming no signal.

In Vitro Effects of Sodium Nitroprusside and L-Nω-Nitroarginine Methyl Ester (L-NAME) on Activity of Lysosomal Cysteine Proteinases and Lysosomal Membrane Permeability.

The direct effect of 5 mM L-NAME and 0.1 mM sodium nitroprusside on activity of lysosomal cysteine proteinases and permeability of lysosomal membrane was studied in vitro after 1, 2, and 4 h of incubation. Isolated from the liver of intact female rats lysosome suspensions were used. Both substances reduced total activity of cathepsin H and did not affect cathepsin B at all time intervals. L-NAME increased cathepsin L activity at all incubation times, while sodium nitroprusside increased activity of this enzyme after 2-h incubation and reduced it incubation after 4-h incubation. L-NAME demonstrated a membrane-destabilizing effect in in vitro experiments, while sodium nitroprusside on the contrary stabilized lysosomal membranes.

[The capacity of Escherichia coli to form biofilms in presence of nano-particles of aluminum oxide.]

The effect of various concentrations of suspensions of nanoparticles of aluminum oxide of size of 30 and 70 nm on capacity of Escherichia сoli to form biofilm in vitro was examined. The study used highly virulent strain of Escherichia сoli isolated from a patient with chronic pyelonephritis. The strain was characterized by high capacity of forming biofilm. It is established that nanoparticles of aluminum oxide with size of 30 nm inhibited capacity of forming biofilm. At that, a reliable decreasing of analyzed indication in two times occurred and analyzed clones of Escherichia сoli passed to category of microorganisms with average capacity of forming biofilm. It is established that intensity of factor suppression depended both on size and concentration of nanoparticles in medium. The most effective in suppression of capacity of forming biofilm was concentration of nanoparticles of aluminum oxide 0,015 mkg/ml that decreased intensity of factor in two times.

PH EFFECT ON ANTAGONISTIC ACTIVITY TOWARDS BACTERIA OF YEASTS ISOLATED FROM HUCUL DAIRY PRODUCTS AND GASTROINTESTINAL TRACT OF HUMAN.

The aim of this work was to study the influence of pH of medium on antagonistic ac- tivity of isolated from authentic Hucul dairy products and gastrointestinal tract (GIT) of Hucul long-livers yeasts towards potentially harmful for humans and animals bacteria. Among 52 tested yeast isolates 14 % yeasts showed considerable antagonistic activity towards Gram-positive bacteria Staphylococcus aureus and only 6 % of them inhibited growth of Gram negative bacteria belonging to genera Escherichia and Citrobacter Most ofyeasts with antagonistic activity (over 70 %) were isolatedfriom long-livers GIT There were identifed two optimal for antagonism areas of pH values of nutrient medium for tested yeasts being around 5.5 and 6.0 for Gram-positive bacteria and around 6.0 and 6.5 for Gram negative bacteria. It appeared that isolated fiom Hucul yogurt Saccharomyces pasterianus yeasts manifested their antagonistic activity in more acidic conditions com- pared to isolates fiom GIT.

ETHANOL PRODUCTION FROM STARCH BY YEASTS ISOLATED FROM CROPS AND DAIRY PRODUCTS.

The aim of this work was to study the ability ofyeasts isolated from crops and dairy products to convert starch to ethanol. The isolated yeasts were screened for their ability to hydrolyze starch. Six most active strains were identified as Lipomyces mesembrius spp. 5.4, 5.5 and 6.4, Shwanniomyces vanrijiae var yarowii F33, Torulaspora sp. F7 and Candida sp. S26. The selected yeasts produced low levels of ethanol from starch under aerobic conditions - 0.006-0.129 g/l (0.3-0.87 % of theoretical yield) and microaerobic conditions - 0. 089-0.35 g/l (1.61-6.07 % of theoretical yield). These amylolytic yeast strains will be studied as the potential candidates for the cocultivation with efficient ethanol producers which do not possess the ability to directly hydrolyze starch.

Complex Identifcation of Red Yeast Isolate from Gastrointestinal Tract of Hucul Long-Liver (Carpathians, Ukraine).

The red yeasts are currently widely discussed and controversial group of yeasts because of the growing number of reports of their ability to become opportunistic pathogens of plants, animals and humans. The aim of this work was complex identifcation of the red yeast culture isolated from gastrointestinal tract of healthy Hucul long-liver from the Carpathians highland region of Ukraine. Torularhodin was found to be a major component within yeast culture carotenoids complex. According to conventional biochemical and morphological approaches as well as to molecular biological investigation of internal transcribed spacer region (ITS) of ribosomal operon it was concluded that isolate belonged to species Rhodotorula mucilaginosa.

[Polysuccinimide exhibited antitumor activity in the experiment].

Antitumor activity of the novel for oncology compound, such as polysuccinimide, against some of experimental tumor models (Lewis lung carcinoma, Acatol adenocarcinoma, Ca-755 adenocarcinoma) has been established. This drug induced 60-80% tumor growth inhibition of these murine solid tumor strains. Polysuccinimide is also effective (60%) against development of metastatic process in lung (Lewis lung carcinoma). Polysuccinimide causes no changes in pH level in tumor tissue (P-388 leukemia, Acatol adenocarcinoma). This agent may be recommended for further profound preclinical study.

[Anti-Tumour Activity of Dinitrosyl Iron Complex with Glutathione and S-Nitrosoglutathione Preparations: Comparative Studies].

The anti-tumor activity of the binuclear form of dinitrosyl iron complexes with glutathione against Lewis lung carcinoma, found earlier upon intraperitoneal administration of the complexes, was also observed when this preparation was injected subcutaneously. A 100 µM/kg subcutaneous dose of the complex being used daily (as calculated per one iron atom in binuclear dinitrosyl iron complexes) for 10 or 15 days, inhibited the tumor growth by 43%. The effect was observed during the first two weeks after tumor transplantation. After that, the tumors began to grow at the rate equal to or even higher than that one for control animals. The mean survival time for treated mice exceeded the control values by 30%. Binuclear dinitrosyl iron complexes administered intraperitoneally was also effective against Ca-755 adenocarcinoma. However, in this case the mean survival time for treated animals increased only by 7%. The anti-tumor activity of S-nitrosoglutathione against Lewis lung carcinoma growth inhibition by 70% and Ca-755 adenocarcinoma growth inhibition by 90% was also shown. However, unlike binuclear dinitrosyl iron complexes the anti-tumor effect of S-nitrosoglutathione decreased when a daily dose of the compound increased (from 200 to 400 µM/kg) The initial anti-tumor effect of binuclear dinitrosyl iron complexes and S-nitrosoglutathione is suggested to be due to NO released from both compounds. A subsequent suppression of the effect is determined by the development of anti-nitrosative and anti-oxidant defense systems in tumors.

[Anti-nitrosative system as a factor of malignant tumor resistance to cytotoxic effect of nitrogen monooxide].

The inhibitory action of binuclear dinitrosyl iron complexes with glutathione on the growth of implanted solid tumor in BDF1 mice bearing Lewis lung carcinoma cells was found. The effect was induced by intraperitoneal injection of the binuclear dinitrosyl iron complexes to mice at a dose of 200 µM/kg daily on days 1-5 and 7-11. At the binuclear dinitrosyl iron complexes: free glutathione ratios of 1:1; and 1:10 in solutions, the inhibitory effect of the DNICs reached the level of 70% and 85%, respectively. When B-DNICs were not further infused, intensive tumor growth, a more rapid rate of tumor growth than control, was observed. The selective accumulation of DNICs as well as iron nitrosyl complexes of heme-containing proteins in tumors were detected by EPR method. The latter were found also in the tumors in control animals. Tumor growth delay in course of B-DNIC administration to the mice is supposed to be due to the elaboration of anti-nitrosative defense in tumor tissue in response to the action of NO released from B-DNIC.

[WET-MODE SCANNING ELECTRON MICROSCOPY AS AN INSTRUMENT FOR STUDIES OF BIOGEOCHEMICAL PROCESSES OF FUNGAL BIOMINERALS FORMATION].

The aim of this work was to examine the potential of the use of one of the modern approaches in scanning electron microscopy--the wet mode ESEM to study biogeochemical processes of biominerals formation by micromycetes. The object of the study was microscopic fungus Beauveria caledonica known for its ability to transform metals and minerals. In response to the presence of copper phosphate in the medium, it was observed the abundant formation of copper oxalate crystals in fungal mycelium. Optimal visualization at wet mode was achieved at the sample chamber pressure around 6 torr and relative humidity 85 - 90%. The comparison of the observations obtained using high-vacuum mode and wet mode scanning electron microscopy showed that in their natural state fungal hyphae and mycelial cords are surrounded by thick hydrated mucilaginous sheath which serves as a matrix for biogeochemical processes of secondary minerals formation and growth. The wet mode and high-vacuum mode scanning electron microscopies complement each other in comprehensive study of biogeochemical role of microscopic fungi in transformations of metals and minerals.

[Oxidative carbonylation of vascular wall proteins in dynamics of experimental venous thrombosis].

The objects of the study were a total of 24 conventional sexually mature Wistar rats weighing 200-400 g. Thrombosis was modelled by means of ligation of the common iliac vein. Animals were withdrawn from the study on days 1, 3 and 5 after intervention. The materials for the study in each animal were homogenates of the vein portion below the site of ligation (thrombosed vein) and the portion of the symmetrical vessel (intact vein). Taken as controls were portions of the common iliac vein of intact animals matched by age, body weight, and keeping conditions. The level of spontaneous and induced in the Fenton reaction oxidative carbonylation of proteins was determined by means of carbonyl derivatives according to the R.L. Levine technique modified by E.E. Dubinina with optical registration of the formed dinitrophenylhydrazines at 356, 370, 430 and 530 nm. The reserve-and-adaptation potential was assessed by means of counting the ratio of the amount of carbonyl derivatives of proteins in spontaneous and induced oxidation. The obtained findings showed that experimental thrombosis is accompanied and followed by an increase in the content of carbonyl derivatives of proteins in the wall of thrombosed veins and, to a lesser degree, in that of intact veins. The maximal elevation of the parameters was registered during the first 24 hours of the development of pathology, demonstrating not only early but late markers of oxidative modification of proteins. Thrombosed veins on day 3 were found to have a decrease in the content of carbonylated proteins to the level of the control values, which was associated with a maximal value of the reserve-adaptation potential. However, day five was marked by a secondary increase in carbonylation accompanied by certain exhaustion of the reserve-adaptive potential. In intact veins, a decrease of the spontaneous oxidative modification level on day 3 was accompanied by a splash of induced carbonylation followed by stabilization of the parameters at the levels slightly exceeding the control values by day 5.

Complex investigation of the effects of lambertianic acid amide in female mice under conditions of social discomfort.

The effects of chronic administration of a new substance lambertianic acid amide and previously synthesized methyl ester of this acid were compared in female mice living under conditions of social discomfort. For modeling social discomfort, female mouse was housed for 30 days in a cage with aggressive male mouse kept behind a transparent perforated partition and observed its confrontations with another male mouse daily placed to the cage. The new agent more effectively than lambertianic acid methyl ester improved communicativeness and motor activity of animals, reduced hypertrophy of the adrenal glands, and enhanced catalase activity in the blood. These changes suggest that lambertianic acid amide produces a pronounced stress-protective effect under conditions of social discomfort.

Effect of 2-aminoadamantane derivatives on behavior of mice in a modified light/dark test.

The effects of two derivatives of 2-aminoadamantane, enantiomers J447H and J579, on the behavior of male and female C57Bl/6J mice were studied using a modified light/dark test. The substances differed by their effects on the behavior of male mice. J579 reduced the number of rearings. J447H in a dose of 1 mg/kg affected more parameters: it reduced exploratory activity 1 h after administration and stimulated exploratory and motor activity in 2 h. In female mice, J447H significantly reduced the number of peepings into holes in 2 h after administration. The results indicate that further analysis of the effects of J579 and especially J447H is required.

[Polyacrylates of noble metals as potential antitumor drugs].

The antitumor activity of polyacrylates of the noble metals containing argentum (argacryl), aurum (auracryl) and platinum (platacryl) has been studied using experimental murine solid tumor models (Lewis lung carcinoma and Acatol adenocarcinoma). It has been found that polyacrylates of the noble metals are capable of inhibiting tumor development by 50-90% compared to control. Auracryl that inhibites the growth of Lewis lung carcinoma and Acatol adenocarcinoma by 80 and 90%, respectively, compared to control is the most efficient among the tested compounds and can be recommended for the further profound preclinical studies.

[Anti-tumour activity of dinitrosyl iron complexes with glutathione].

The anti-tumour dose-dependent effect of binuclear dinitrosyl iron complexes with glutathione as NO donors on solid tumour in the mouse Lewis lung carcinome was detected. The complexes being injected at the doses of 21, 42, 105 mg/kg daily during 10 days blocked completely the development of the tumour for the first week after tumour cell implantation into animals. After that, the part of tumour cells which remained in intact alive state began to grow at the rate equal to that for control animals. The effect was proposed to be caused via the formation of the anti-nitrosative defense system in the cells as a response to NO attack to cells. It was also hypothesized that this system can be inactivated by higher doses of dinitrosyl iron complexes. The data were obtained which were in line with the hypothesis.

Searches for new physics below twice the electron mass with GERDA.

A search for full energy depositions from bosonic keV-scale dark matter candidates of masses between 65 and 1021 keV has been performed with data collected during Phase II of the GERmanium Detector Array (Gerda) experiment. Our analysis includes direct dark matter absorption as well as dark Compton scattering. With a total exposure of 105.5 kg years, no evidence for a signal above the background has been observed. The resulting exclusion limits deduced with either Bayesian or Frequentist statistics are the most stringent direct constraints in the major part of the 140-1021 keV mass range. As an example, at a mass of 150 keV the dimensionless coupling of dark photons and axion-like particles to electrons has been constrained to α ' / α < 8.7 × 10 - 24 and g ae < 3.3 × 10 - 12 at 90% credible interval (CI), respectively. Additionally, a search for peak-like signals from beyond the Standard Model decays of nucleons and electrons is performed. We find for the inclusive decay of a single neutron in 76 Ge a lower lifetime limit of τ n > 1.5 × 10 24 years and for a proton τ p > 1.3 × 10 24 years at 90% CI. For the electron decay e - → ν e γ a lower limit of τ e > 5.4 × 10 25 years at 90% CI has been determined. Supplementary Information: The online version contains supplementary material available at 10.1140/epjc/s10052-024-13020-0.