32 research outputs found
The influence of a new organic fertilizer based on sapropel on the results of germination of seeds of wheat, oats and mung bean
The article describes experience in studying the effect of a new complex biofertilizer based on natural raw materials - extracts of bird droppings and sapropel, namely: humic and fulvic substances from it, nitrogen-fixing microorganism Azotobacter chroococcum, fungus–ascomycete Trichoderma viride and a source of zinc sulfur - zinc sulfate. on germination and germination energy, seeds of winter wheat (Triticum aestivum) of Tanya variety, oats (Avena sativa L.) of Valdin 765 variety and legume mash (Vigna radiata) of Tajik 1 variety. The purpose of this study was to establish a sustainable positive effect by germinating seeds of winter wheat, oats and mung bean in Petri dishes when treated with a new complex biofertilizer based on sapropel and without treatment, to track the intensity of the germination energy of seeds of these plants on the third day and germination - on the seventh day. On the seventh day of germination of winter wheat in the experimental version, the length of seedlings exceeded the control version by 9.2%. In oats, the length of sprouts in the experimental version is 13.6% longer than in the control version
Solutions of the Two-Dimensional Hubbard Model: Benchmarks and Results from a Wide Range of Numerical Algorithms
Numerical results for ground-state and excited-state properties (energies, double occupancies, and Matsubara-axis self-energies) of the single-orbital Hubbard model on a two-dimensional square lattice are presented, in order to provide an assessment of our ability to compute accurate results in the thermodynamic limit. Many methods are employed, including auxiliary-field quantum Monte Carlo, bare and bold-line diagrammatic Monte Carlo, method of dual fermions, density matrix embedding theory, density matrix renormalization group, dynamical cluster approximation, diffusion Monte Carlo within a fixed-node approximation, unrestricted coupled cluster theory, and multireference projected Hartree-Fock methods. Comparison of results obtained by different methods allows for the identification of uncertainties and systematic errors. The importance of extrapolation to converged thermodynamic-limit values is emphasized. Cases where agreement between different methods is obtained establish benchmark results that may be useful in the validation of new approaches and the improvement of existing methods
COVID-19 symptoms at hospital admission vary with age and sex: results from the ISARIC prospective multinational observational study
Background:
The ISARIC prospective multinational observational study is the largest cohort of hospitalized patients with COVID-19. We present relationships of age, sex, and nationality to presenting symptoms.
Methods:
International, prospective observational study of 60 109 hospitalized symptomatic patients with laboratory-confirmed COVID-19 recruited from 43 countries between 30 January and 3 August 2020. Logistic regression was performed to evaluate relationships of age and sex to published COVID-19 case definitions and the most commonly reported symptoms.
Results:
‘Typical’ symptoms of fever (69%), cough (68%) and shortness of breath (66%) were the most commonly reported. 92% of patients experienced at least one of these. Prevalence of typical symptoms was greatest in 30- to 60-year-olds (respectively 80, 79, 69%; at least one 95%). They were reported less frequently in children (≤ 18 years: 69, 48, 23; 85%), older adults (≥ 70 years: 61, 62, 65; 90%), and women (66, 66, 64; 90%; vs. men 71, 70, 67; 93%, each P < 0.001). The most common atypical presentations under 60 years of age were nausea and vomiting and abdominal pain, and over 60 years was confusion. Regression models showed significant differences in symptoms with sex, age and country.
Interpretation:
This international collaboration has allowed us to report reliable symptom data from the largest cohort of patients admitted to hospital with COVID-19. Adults over 60 and children admitted to hospital with COVID-19 are less likely to present with typical symptoms. Nausea and vomiting are common atypical presentations under 30 years. Confusion is a frequent atypical presentation of COVID-19 in adults over 60 years. Women are less likely to experience typical symptoms than men
Administration of the immunomodulatory drug aminodihydrophthalazinedione sodium for prevention of progression pneumonia induced COVID-19
Aim to determine the efficacy of drug aminodihydrophthalazinedione sodium (Galavit) for prevention of progression of the coronavirus infection pulmonary complications: acceleration of regression of pulmonary infiltrates and resolution of COVID-induced pneumonia. 22 patients with medium and severe COVID-induced pneumonia were included in the study. The study included 8 men and 14 women, the average age was 62.17.4 years. Patients with more than one adverse prognostic factor made 82%. Average volume of pulmonary tissue affection (computer tomography CT-2, 2550% of lung volume) was registered in 13 (59.1%) patients, significant volume (CT-3, 5075% of lung volume), in 9 (40.9%) patients. All patients had progressive respiratory failure manifestations due to hypoxemia and related diseases. Aminodihydrophthalazinedione sodium was administered for 714 days from the beginning of disease, at the end of the course of standard complex therapy, in case of preservation of signs of intoxication, negative dynamics according to computer tomography data. Administration of aminodihydrophthalazinedione sodium had a positive effect on the dynamics of clinical scores. The progression of respiratory failure was halted and there was an increase in SpO2 values. According to the control computer tomography data the stabilization of the pulmonary parenchyma affection degree was noted, as well as reduction of the size of the compacted areas in the pulmonary tissue and formation of the picture of organising pneumonia that contributed to reduction of respiratory failure grade. The use of aminodihydrophthalazinedione sodium in complex therapy of COVID-induced pneumonia has a modulating effect on the immune system, prevents the progression of pulmonary tissue affection, promotes regression of infiltration foci, preventing the development of excessive pneumofibrosis and the progression of respiratory failure
The change in function of Th1 and Th2-lymphocytes and cytokine profile at chronic intoxication of ethanol
In experiments in non-inbred rats, it has been established that chronic intoxication of ethanol (30 days, total dose – 6.0 LD50) essentially reduces concentration of cytokines IFNγ, IL-2, IL-4, IL-10 in blood, increases concentration of IL-6, reduces an interrelation IFNγ/IL-4 in comparison with the control, suppresses of immune responses, which displays the greater lesion of Th1-cells in comparison with Th2-lymphosytes
The influence of a new organic fertilizer based on sapropel on the results of germination of seeds of wheat, oats and mung bean
The article describes experience in studying the effect of a new complex biofertilizer based on natural raw materials - extracts of bird droppings and sapropel, namely: humic and fulvic substances from it, nitrogen-fixing microorganism Azotobacter chroococcum, fungus–ascomycete Trichoderma viride and a source of zinc sulfur - zinc sulfate. on germination and germination energy, seeds of winter wheat (Triticum aestivum) of Tanya variety, oats (Avena sativa L.) of Valdin 765 variety and legume mash (Vigna radiata) of Tajik 1 variety. The purpose of this study was to establish a sustainable positive effect by germinating seeds of winter wheat, oats and mung bean in Petri dishes when treated with a new complex biofertilizer based on sapropel and without treatment, to track the intensity of the germination energy of seeds of these plants on the third day and germination - on the seventh day. On the seventh day of germination of winter wheat in the experimental version, the length of seedlings exceeded the control version by 9.2%. In oats, the length of sprouts in the experimental version is 13.6% longer than in the control version
Gallstone disease as a clinical marker of metabolic syndrome
The prevalence of cholelithiasis, its close pathogenetic connection with metabolic syndrome, high frequency of surgical intervention, significant economic losses put forward this comorbid pathology in a number of leading problems of modern clinical medicine. The factors associated with the metabolic syndrome not only increase the risk of developing cholelithiasis, but also form the basis of non-drug and drug therapy. Metabolic syndrome often determines the occurrence of three common and potentially life-threatening complications of cholelithiasis: acute cholecystitis, acute cholangitis and biliary pancreatitis. Therefore, the solution of this problem is associated with the need for early detection of additional risk factors for cholelithiasis, optimization of the early diagnostic and prognostic model of existing multi-organ pathology with the aim of reducing the progression of the disease and its complications. The data obtained in recent years on the human genome with metabolic syndrome and cholelithiasis make it possible to predict the development of comorbid pathology and to fully ensure the effectiveness of primary prevention
Increased Oxidative Stress in the Prefrontal Cortex as a Shared Feature of Depressive- and PTSD-Like Syndromes: Effects of a Standardized Herbal Antioxidant
Major depression (MD) and posttraumatic stress disorder (PTSD) share common brain mechanisms and treatment strategies. Nowadays, the dramatically developing COVID-19 situation unavoidably results in stress, psychological trauma, and high incidence of MD and PTSD. Hence, the importance of the development of new treatments for these disorders cannot be overstated. Herbal medicine appears to be an effective and safe treatment with fewer side effects than classic pharmaca and that is affordable in low-income countries. Currently, oxidative stress and neuroinflammation attract increasing attention as important mechanisms of MD and PTSD. We investigated the effects of a standardized herbal cocktail (SHC), an extract of clove, bell pepper, basil, pomegranate, nettle, and other plants, that was designed as an antioxidant treatment in mouse models of MD and PTSD. In the MD model of “emotional” ultrasound stress (US), mice were subjected to ultrasound frequencies of 16–20 kHz, mimicking rodent sounds of anxiety/despair and “neutral” frequencies of 25–45 kHz, for three weeks and concomitantly treated with SHC. US-exposed mice showed elevated concentrations of oxidative stress markers malondialdehyde and protein carbonyl, increased gene and protein expression of pro-inflammatory cytokines interleukin (IL)-1β and IL-6 and other molecular changes in the prefrontal cortex as well as weight loss, helplessness, anxiety-like behavior, and neophobia that were ameliorated by the SHC treatment. In the PTSD model of the modified forced swim test (modFST), in which a 2-day swim is followed by an additional swim on day 5, mice were pretreated with SHC for 16 days. Increases in the floating behavior and oxidative stress markers malondialdehyde and protein carbonyl in the prefrontal cortex of modFST-mice were prevented by the administration of SHC. Chromatography mass spectrometry revealed bioactive constituents of SHC, including D-ribofuranose, beta-D-lactose, malic, glyceric, and citric acids that can modulate oxidative stress, immunity, and gut and microbiome functions and, thus, are likely to be active antistress elements underlying the beneficial effects of SHC. Significant correlations of malondialdehyde concentration in the prefrontal cortex with altered measures of behavioral despair and anxiety-like behavior suggest that the accumulation of oxidative stress markers are a common biological feature of MD and PTSD that can be equally effectively targeted therapeutically with antioxidant therapy, such as the SHC investigated here