Publications by authors named "Yakovlev A"

Article Synopsis
  • * Research indicates that exposure to psychoactive substances affects the production and composition of sEVs, with potential differences based on sex.
  • * The study suggests there are two mechanisms through which psychoactive substances impact sEVs: a "fast" mechanism that promotes neuroplasticity, and a "slow" mechanism that disrupts the normal production of sEVs.
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  • Hyperhomocysteinemia (hHCY) is linked to increased plasma homocysteine levels and correlates with a higher risk of migraines, especially those with aura.
  • The study investigated how hHCY affects cortical spreading depression (CSD) and neuronal activity in the somatosensory cortex of rats, highlighting an increased excitability and more frequent CSDs in those with hHCY.
  • Results showed impaired CSD propagation and delayed recovery of brain activity in hHCY animals, indicating that prolonged high homocysteine levels may increase the risk of migraine-associated brain injuries.
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A dynamic study of ceramide concentrations and their association with recurrent event risk could enhance our understanding of cardiovascular complications. To assess the prognostic value of ceramide concentrations (Cer(d18:1/16:0), Cer(d18:1/18:0), Cer(d18:1/24:1), Cer(d18:1/24:0)) and their dynamics in combination with standard clinical and laboratory parameters and therapeutic interventions in ACS patients. Among 110 ACS patients, triple blood sampling was performed for targeted lipidomic analysis using high-performance liquid chromatography-tandem mass spectrometry.

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Aim: To evaluate the efficiency of therapy with Prostatex plus rectal suppositories in the treatment of patients with chronic abacterial prostatitis and benign prostatic hyperplasia (BPH).

Materials And Methods: A total of 50 men with chronic abacterial prostatitis of category III A, occurring in combination with BPH, were included in the study. All patients received Prostatex plus (rectal suppositories) 1 suppository 1 time per day.

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To evaluate the effect of early measurement of serum digoxin concentration (SDC) on therapeutical safety and efficacy in patients with recent-onset atrial fibrillation and heart failure. De novo ventricular arrhythmias, high-grade AV node or sinus node blocks were noted in 22%, this risk was positively associated with endpoint SDC (mean SDC 0,88±0,78 ng/mL vs 0,45±0,71 ng/mL, p=0,039) irrespective of baseline characteristics. Empiric calculators for long-term digoxin monitoring correlated with both SDC (r=0,54.

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  • Machine learning (ML) is increasingly important for predicting sepsis, a critical condition where timely intervention is crucial; this study explores the effectiveness of ML models in clinical settings.
  • Researchers analyzed 73 studies involving nearly 458,000 patients and found that ML models, particularly Neural Networks and Decision Trees, performed better than traditional scoring systems, achieving a pooled AUC of 0.825.
  • The study emphasizes the need for standardized practices in reporting and validating ML models to enhance their clinical application and effectiveness in predicting sepsis across diverse patient populations.
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Background: Fibromyalgia (FM) is a chronic pain syndrome associated with significant distress and numerous unpleasant consequences. Mental health problems in people with FM have been reported in many studies. People with mental disorders are thought to be at higher risk of FM than the general population, but the prevalence has not been established.

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We have obtained what we believe to be the shortest fs tuning wavelength (1004 nm) from a Yb-based solid-state laser system. As the working horse, we have chosen Yb:YVO due to its blueshifted gain spectrum. While using a single 10 W 952 nm diode for pumping and a semiconductor saturable absorber mirror (SESAM) for mode-locking, we have achieved 266 fs long pulses with up to 1.

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Objective: To study the long-term outcomes of surgical treatment of cerebral aneurysms (CA) after using different methods of excluding the aneurysm from the bloodstream.

Material And Methods: We analyzed the long-term results of surgical treatment of 311 patients for CA (on average after 3.5 years).

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Introduction:  Epidural spinal cord stimulation is a minimally invasive procedure with a growing list of indications. It has a good safety profile and analgesic effect, reduces the severity of spasticity, and activates various brain regions. The purpose of this study is to evaluate the clinical outcome of epidural spinal cord stimulation in patients with spastic syndrome and chronic disorders of consciousness resulting from severe traumatic brain injury (sTBI).

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  • * A study in Russia examined 574 hospitalized children under 18 with COVID-19 from January 2022 to March 2023, finding about one-third had coinfections, predominantly adenovirus and bacterial infections.
  • * Results indicated that while viral coinfections led to higher fevers and bronchitis, bacterial coinfections resulted in longer illnesses and increased pneumonia, suggesting that seasonal viruses may have been more harmful to children during the Omicron wave than SARS-CoV-2 alone.
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Click ligation is a technology of joining DNA fragments based on azide-alkyne cycloaddition. In the most common variant, click ligation introduces a 4-methyl-1,2,3-triazole (trz) group instead of the phosphodiester bond between two adjacent nucleosides. While this linkage is believed to be biocompatible, little is known about the possibility of its recognition by DNA repair systems or its potential for DNA polymerase stalling and miscoding.

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All bacterial strains studied retained the viability and ability to form both mono- and polycultural biofilms under conditions of long-term culturing in artificial seawater at 6°C and without addition of nutrients. Bacillus sp. and Pseudomonas japonica presumably stimulated the growth and reproduction of the pathogenic bacteria Listeria monocytogenes and Yersinia pseudotuberculosis.

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Using femtosecond differential spectroscopy, excitation energy transfer in reaction centers (RCs) of the carotenoidless strain of purple bacteria Rhodospirillum rubrum G9 was studied at room temperature. Excitation and probing of the Q, Q and Soret absorption bands of the RCs were carried out by pulses with duration of 25-30 fs. Modeling of ΔA (light - dark) kinetics made it possible to estimate the characteristic time of various stages of excitation energy transformation.

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The prevailing model for understanding chronic critical illness is a biphasic model, suggesting phases of acute and chronic critical conditions. A major challenge within this model is the difficulty in determining the timing of the process chronicity. It is likely that the triad of symptoms (inflammation, catabolism, and immunosuppression [ICIS]) could be associated with this particular point.

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Background: Postoperative agitation is common after non-cardiac surgery. It is associated with postoperative delirium and cognitive dysfunction, leading to prolonged hospital stay and delayed social readjustment. Prevention and treatment strategies are lacking.

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Elevation of the homocysteine concentration in the plasma called hyperhomocysteinemia (hHCY) during pregnancy causes a number of pre- and postnatal developmental disorders. The aim of our study was to analyze the effects of HS donors -NaHS and N-acetylcysteine (NAC) on blood-brain barrier (BBB) permeability in rats with prenatal hHCY. In rats with mild hHCY BBB permeability assessed by Evans Blue extravasation in brain increased markedly throughout life.

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Atherosclerosis poses a significant and widespread problem at the population level. Consequently, there is a pressing need to develop effective methods to reduce the risk associated with this condition, which holds a prominent position in cardiology research. The primary manifestation of atherosclerosis involves plaque formation on the walls of coronary arteries.

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This study focuses on the complex interplay of healthcare, economic factors, and population dynamics, addressing a research gap in regional-level models that integrate diverse features within a temporal framework. Our primary objective is to develop an advanced temporal model for predicting cardiovascular mortality in Russian regions by integrating global and local healthcare features with economic and population dynamics. Utilizing a dataset from the Almazov Center's Department of Mortality Performance Monitoring, covering 94 regions and 752 records from January 1, 2015, to December 31, 2023, our analysis incorporates key parameters such as angioplasty procedures, population morbidity rates, Ischemic Heart Disease (IHD) and Cardiovascular Diseases (CVD) monitoring, and demographic data.

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Atherosclerosis is extremely widespread. Traditionally, it is considered a disease of older people, who most often experience problems with the heart and blood vessels. While much attention from the scientific community has been paid to studying the association between aging and atherosclerosis, as well as its consequences, there is evidence that atherosclerosis occurs at an early age.

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In this study, we used multilayer graphene oxide (GO) obtained by anodic oxidation of graphite powder in 83% sulfuric acid. The modification of GO was carried out by its interaction with hexamethylenediamine (HMDA) according to the mechanism of nucleophilic substitution between the amino group of HMDA (HMDA) and the epoxy groups of GO, accompanied by partial reduction of multilayer GO and an increase in the deformation of the carbon layers. The structure and properties of modified HMDA-GO were characterized using research methods such as scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction spectroscopy and Raman spectroscopy.

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