Репозиторий Университета

© 2019, Springer Science+Business Media, LLC, part of Springer Nature. Diallyl trisulfide (DATS) is distinguished as the most potent polysulfide isolated from garlic. The aim of our study was to investigate effects of oral administration of DATS on healthy and diabetic rats, with special attention on heart function. Rats were randomly divided into four groups: CTRL (healthy rats), DATS (healthy rats treated with DATS), DM (diabetic rats), DM + DATS (diabetic rats treated with DATS). DATS (40 mg/kg of body weight) was administered every other day for 3 weeks, at the end of which rats underwent echocardiography, glycemic measurement and redox status assessment. Isolated rat hearts were subjected to 30 min global ischemia and 60 min reperfusion, after which heart tissue was counterstain with hematoxylin and eosin and cardiac Troponin T staining (cTnT), while expression of Bax, B cell lymphoma 2 (Bcl-2), caspase-3, caspase-9 and superoxide dismutase-2 were examined in the left ventricle. DATS treatment significantly reduced blood glucose levels of diabetic rats, and improved cardiac function recovery, diminished oxidation status, attenuated cardiac remodeling and inhibited myocardial apoptosis in healthy and diabetic rats. DATS treatment causes promising cardioprotective effects on ex vivo-induced ischemia/reperfusion (I/R) injury in diabetic and healthy rat heart probably mediated by inhibited myocardial apoptosis. Moreover, appropriate DATS consumption may provide potential co-therapy or prevention of hyperglycemia and various cardiac complications in rats with DM.

© 2018 by the authors. Neonatal hypoxia–ischemia is one of the main causes of mortality and disability of newborns. To study the mechanisms of neonatal brain cell damage, we used a model of neonatal hypoxia–ischemia in seven-day-old rats, by annealing of the common carotid artery with subsequent hypoxia of 8% oxygen. We demonstrate that neonatal hypoxia–ischemia causes mitochondrial dysfunction associated with high production of reactive oxygen species, which leads to oxidative stress. Targeted delivery of antioxidants to the mitochondria can be an effective therapeutic approach to treat the deleterious effects of brain hypoxia–ischemia. We explored the neuroprotective properties of the mitochondria-targeted antioxidant SkQR1, which is the conjugate of a plant plastoquinone and a penetrating cation, rhodamine 19. Being introduced before or immediately after hypoxia–ischemia, SkQR1 affords neuroprotection as judged by the diminished brain damage and recovery of long-term neurological functions. Using vital sections of the brain, SkQR1 has been shown to reduce the development of oxidative stress. Thus, the mitochondrial-targeted antioxidant derived from plant plastoquinone can effectively protect the brain of newborns both in pre-ischemic and post-stroke conditions, making it a promising candidate for further clinical studies.

© 2018, Springer Science+Business Media, LLC, part of Springer Nature. Oxidative kidney injury was compared in newborn and adult rats under conditions of ischemia/reperfusion and in experimental model of systemic inflammation induced by endotoxin (LPS of bacterial cell wall) administration. Oxidative stress in the kidney accompanied both experimental models, but despite similar oxidative tissue damage, kidney dysfunction in neonates was less pronounced than in adult animals. It was found that neonatal kidney has a more potent regenerative potential with higher level of cell proliferation than adult kidney, where the level proliferating cell antigen (PCNA) increased only on day 2 after ischemia/reperfusion. The pathological process in the neonatal kidney developed against the background of active cell proliferation, and, as a result, proliferating cells could almost immediately replace the damaged structures. In the adult kidney, regeneration of the renal tissue was activated only after significant loss of functional nephrons and impairment of renal function.

© 2018 Vitebsk State Medical University. All rights reserved. The acute mesenteric ischemia is one of the most complex problems in the urgent surgery because of the high mortality, the cause of which is late diagnosis. The operation treatment is often provided in the phase of diffuse peritonitis. This literature review is done in order to identify the most accessible and accurate methods of early diagnosis of the acute mesenteric ischemia. At present time rather a small number of biomarkers for diagnosing the acute mesenteric ischemia are used, such as α-glutamate-S-transferase, D-dimers, procalcitonin, D-lactate, intestinal fatty acid binding protein (I-FABP), ischemia-modified albumin. According to the literature the highest sensitivity and specificity were found in I-FABP (75-85% and 70-80% respectively), α-glutamate-S-transferase (67.8% and 84.2%), ischemia-modified albumin (94.7% and 86.4%). In addition, expensive and invasive methods are currently used for early diagnosis, such as CT angiography, contrast-enhanced MRI, selective angiography. However, these technologies are not available to all medical institutions. We should continue further search of various biomarkers and their more widespread introduction to clinical practice in order to solve the problem of early acute mesenteric ischemia diagnostics.

Chronic obstructive pulmonary disease (COPD) is one of the main causes of disease and death incidences worldwide. Different organs and systems are involved in COPD activating tissue hypoxia. It affects especially tissue functioning with the high level of intensity of metabolic processes, and the nervous system suffers first. Neuroimaging studies show white and grey matter damage and cerebral atrophy, which may clinically manifest themselves in different neurological symptoms depended on vascular system lesions, and cognitive and affective impairments. Despite of its potential importance, encephalopathy in COPD remains a little-studied concomitant pathology. Application of cytoprotective drugs is pathogenetically justified in this case and must be included in COPD complex therapy. In particular, the inclusion of mexicor in the treatment of patients with chronic pulmonary heart increases the efficacy of treatment of the main and associated diseases (chronic cerebral ischemia, cardiac insufficiency and arrhythmia).

© 2018, Media Sphera Publishing Group. All rights reserved. Objective. To study the effect of сavinton comforte (CC) on the severity of cognitive impairment and motor awkwardness in patients with chronic brain ischemia (HIGM). Material and methods. There were 30 patients (8 men, 22 women) aged 50—65 years (61.6±4.9 years on average) with AHU with cognitive impairment. We used tests of MINI-Cog, Munsterberg, TMT), ADL). QC appointed 10 mg 3 times a day for 3 months. Results. Against the background of therapy, the improvement of constructive praxis and short-term memory, an increase in the speed of visual search and visual-motor function, an increase in the level of selectivity of attention, an improvement in the reproduction of visual images and perception, an increase in the speed of the motor task (drawing strokes). Conclusion. The obtained data can testify about the improvement of indicators of function of a small motility of brushes on the background of improvement of cognitive functions.

© 2018, Media Sphera Publishing Group. All rights reserved. The authors describe manifestations of chronic cerebral ischemia (CCI) and present the cases of a combination of primary headache and CCI. Management of patients with CCI and headache and the use of vazobral and its efficacy in treatment of such patients are discussed.

© 2018 Stolichnaya Izdatelskaya Kompaniya. All rights reserved. The key to successful treatment in patients with acute coronary syndrome is maximally early revascularization of the coronary arteries. Treatment of multifocal atherosclerosis with lesions of the coronary and peripheral arteries requires coordinated work of the multidisciplinary team of doctors. Critical ischemia of the lower limbs requires urgent revascularization in order to prevent limb amputation. However, it is not always possible to perform revascularization using specialists of the same profile – endovascular or surgical. The use of hybrid methods of treatment (surgical and endovascular) allows to significantly improve the prognosis in saving the limb. The article presents a clinical observation of successful multistep treatment of a patient with acute coronary syndrome in combination with critical ischemia of the lower limb. The first stage was performed by multiple stenting of the coronary arteries with bioabsorptive scaffolds; the second stage was the hybrid treatment – femoral-tibial bypass with simultaneous recanalization and angioplasty of the lower leg arteries with good postoperative and long-term outcome.

© 2018 Russian Electronic Journal of Radiology.All right reserved. Purpose: Presentation of diagnostic possibilities of volume computed tomography (VCT) of a heart combined with pharmacological vasodilation agent adenosine triphosphate (ATP) test in estimation of myocardial perfusion and detection of left ventricle myocardial ischemia diagnosis with non-obstructive coronary arteries. Materials and methods: VCT combined with ATP test was performed at female 53-year-old patient with non-obstructive coronary arteries verified by coronary angiography. The VCT «Aqulion ONE 640 Vision Edition» (Toshiba, Japan) was used. The non-ionic iodinecontaining contrast agent Ultravist-370 (Bayer, Germany) was infused in a quantity of 60 ml at rest and during ATP test. The clinical and instrumental data were also performed. Conclusion: The presented clinical case shows the possibilities in myocardial ischemia of the left ventricle in non-obstructive coronary arteries diagnostics by a volume CT combined with ATP pharmacological test.

© Ima-Press Publishing House. All rights reserved. Stroke is one of the leading causes of death and disability in the population, has a complex multifactorial nature and develops through the interaction of environmental factors and genetic predisposition, the pattern and mechanisms of which have been insufficiently studied. Ischemic stroke (IS) is most commonly encountered. Objective: to investigate the differential expression of microRNAs (miRNAs) in the plasma of patients in the acute and subacute stages of stroke. Patients and methods. The investigation enrolled 10 patients (5 men and 5 women; mean age, 64.5 years) with IS and 10 gender- and age-matched volunteers (a control group). A real-time polymerase chain reaction (PCR) was used to analyze the expression of 45 miRNAs isolated from the plasma samples of the patients on days 1 and 8 after onset of IS and isolated once from those of the controls. Results. A list of 45 miRNAs, that might be potential biomarkers and/or prognostic factors of stroke, was compiled. The investigation showed a decrease in let-7i-3p and miR-23a-3p miRNA expression in patients on the first day after onset of IS compared to the control group. The expression of miR-23a-3p increased in the patients at 8 days after IS. The patients with IS and the controls both showed gender differences in the expression of let-7i-5p and miR-92b-3p. Conclusion. The in-silico analysis revealed specific miRNA clusters associated with the peculiarities of clinical manifestations of IS. This may suggest that the patients with the favorable and unfavorable course of stroke may have its different molecular basis. In addition, it is necessary to take into account gender differences in the expression of individual miRNAs in assessing their significance in the pathogenesis and prognosis of IS.

© 2018, SPb RAACI. The aim of the study was to determine efficiency of Glutoxim, aimed for correction of immune disorders. The drug was administered to the patients with chronic cerebral ischemia (CCI, Stage I and II) complicated by arterial hypertension. Increased contents of pro-And anti-inflammatory cytokines, IFNγ, IL- 2, G-CSF, and activation of the complement system have been revealed for these conditions, at both functional stages of the disease. The patients with stage II CCI showed elevated markers of oxygen-dependent activity in polymorphonuclear leukocytes (increased levels of spontaneous and stimulated nitroblue tetrazolium (NBT) reduction tests, phagocytic capacity and stimulation index of neutrophils). Stage I of chronic cerebral ischemia was characterized by normal values of NBT reduction tests and functional reserve of neutrophils, along with decreased stimulation index of neutrophils. Among 26 parameters of immune status, 73.1% and 80.8% of indices proved to be changed, respectively, in the patients with stage I and II CCI. 66.7% of immune indices appeared similar in magnitude and direction of changes, whereas the resting 33% are identical in orientation. Usage of Cereton and Actovegin in treatment of the stage I CCI caused normalization of 5.3% immune parameters, with partial normalization of 26.3% tests, and 68.4% of the indexes remaining unchanged or increased posttreatment. Inclusion of Glutoxim into the combined pharmacotherapy proved to be more effective since it totally normalized 52.6% of the indexes, along with partial normalization of 21.1%, while 26.3% of the indicators were not affected by the therapy. Administration of Cereton and Actovegin at the second stage of chronic brain ischemia was followed by partial normalization for 47,6% of the tests, while leaving unchanged or increased 52.4% of the indicators. Glutoxim Use fully normalize 19.0% and partially normalizes 57.1% of immune parameters.

© 2018, © 2018 Informa UK Limited, trading as Taylor  &  Francis Group. The aim of our study was to determine a chemical composition of methanol extract of Galium verum as well as to assess its effects on functional recovery and redox status of isolated rat heart after ischemia. Rats were divided into control and G. verum group, which included animals treated with 500 mg/kg of methanol extract of G. verum for 28 days. Parameters of heart function and oxidative stress markers were estimated. Cell morphology was evaluated by hematoxylin and eosin (HE) staining. Our results demonstrated for the first time that G. verum extract preserved cardiac contractility, systolic, and diastolic function as wells as structural damage of the heart after ischemia. Furthermore, G. verum extract modulated the activity of antioxidant enzymes and alleviated the production of pro-oxidants.

© 2018 Media Sphera Publishing Group.All Rights Reserved. The review illuminated actual issues of the diagnostic efficiency of computed tomography (CT) of the coronary arteries in the planning of the procedure percutaneous coronary intervention (PCI) in patients with chronic occlusion of coronary arteries (CTO). The results of researches of detection of predictors of unsuccessful recanalization according to traditional coronary angiography (CAG) and CT angiography were presented. The major CT characteristics of the CTO, which can supplement the coronary angiography data to predict outcomes of the PCI were discussed.

© 2018 Izdatel'stvo Meditsina. All rights reserved. The cerebrovascular effects of 5-hydroxyadamantane-2-one (100 mg/kg, i.v.), nimodipine (0.03 mg/kg, i.v.), and S-amlodi- pine nicotinate (0.1 rag/kg, i.v.) were compared and found to differ significantly. While G ABA-ergic 5-hydroxyadaman- tan-2-one and slow calcium channels blocker nimodipine cause a pronounced increase in cerebral blood supply under conditions of global transient ischemia of the brain, their activity in modeling hemorrhagic stroke is significantly lower. At the same time, S-amlodipine nicotinate equally improves cerebral circulation in both hemorrhagic and ischemic brain damage, i.e., the cerebrovascular effect of S-amlodipine nicotinate in the hemorrhagic stroke model is superior to that of nimodipine and 5-hydroxyadamantan-2-one. This is due to a distinguishing feature of the of S-amlodipine nicotinate action, which, in contrast to 5-hydroxyadamantan-2-one and nimodipine, has a binary vasodilating effect on cerebral vessels: (i) blocking slow calcium channels and (ii) stimulating GABAA-receptors.

© 2018 Human Stem Cell Institute. All rights reserved. Cell therapy is one of the most promising directions in the treatment of critical limb ischemia (CLI). In spite of certain advances achieved in this field in the last decades, which are related to application of bone marrow stem cells (BMSC), a large number of problems still remain unsolved. In this review, we discuss the BMSC biology, mechanisms of their therapeutic effect in the CLI treatment and results of the most notable BMSC-based clinical studies in detail.

© 2018 Ima-Press Publishing House. All rights reserved. Chronic cerebral ischemia (CCI) is one of the most common diagnoses in middle-aged and elderly patients in the practice of an outpatient neurologist. Unfortunately, the diagnosis of CCI in these patients is often established only on the basis of complaints of headache, dizziness, instability during walking, and lower mood. At the same time, other diseases that cause these symptoms are not diagnosed, patients do not receive treatment, which considerably worsens quality of life and leads to anxiety and depression. A variety of diseases, such as headache, peripheral vestibular vertigo, depression, Alzheimer's disease, and Parkinson's syndrome, are frequently hidden under the diagnosis of CCI. The leading neurological syndrome in CCI is cognitive impairment that can be both moderate and reach the level of dementia. Approximately 40% of patients with chronic cerebrovascular disease complain of headache that is usually caused by mixed primary headache. The management tactics for a CCI patient suffering from headache is aimed at treating primary headache, modifying vascular risk factors, and managing cognitive impairment. The paper discusses the use of choline alphoscerate in patients diagnosed with CCI.

© 2018 Ima-Press Publishing House. All rights reserved. Cognitive impairment (CI) is a basis for the clinical presentation of chronic cerebral ischemia (CCI). However, the role of the mechanisms of inflammation and angiogenesis in the origin of CI is unclear, as is its relationship to the number and localization of foci during a neuroimaging examination. Objective: to investigate the relationship between the presence of CI, focal brain tissue changes, and the plasma and serum levels of vascular endothelial growth factor (VEGF) and monocyte chemoattractant protein-1 (MCP-1) in patients with CCI. Patients and methods. Examinations were made in 59 patients with CCI and in 20 apparently healthy individuals. The investigators evaluated the cognitive status using the Mini-Mental State Examination (MMSE) and the clock drawing test), performed brain magnetic resonance imaging (MRI), duplex scanning of cerebral vessels, and determined laboratory indicators: the serum levels of MCP-1 and C-reactive protein, and the serum and plasma concentrations of VEGF. Results. The patients with CI were found to have higher values of inflammatory markers, lower serum and plasma concentrations of angiogenic factors, and a greater number of focal changes on MRI than those without CI (5.06±0.23 and 2.36±0.3 scores, respectively; p(0.05). Imbalance of angiogenic and antiangiogenic factors can cause disease progression and moderate vascular CI in patients with CCI.

It is known that the reduction of blood vessels by epinephrine that are part of the local anesthetic leads to a decrease in oxygen intake and the development of hypoxia, which has a significant effect on the excitability of nerve fibers. This is due to the fact that epinephrine is present in the local anesthetic cartridge, which helps to reduce, until termination, microcirculation in the depot area, which leads to local hypothermia. With the introduction of local anesthetics, the temperature of which is significantly lower than the depot temperature, the patient experiences severe discomfort, which is associated with unsuccessful local anesthesia. The goal of the study was the need to analyze the feasibility of using the thermography method in assessing the degree of ischemia of the soft tissues of the maxillofacial region against the background of local anesthesia with a different concentration of epinephrine in dentistry. MATERIAL AND METHODS: In the pilot study, 22 healthy volunteers aged between 29-35 years of both sexes participated. To assess the degree of external vasoconstriction, a buccal region was chosen near the maxilla. Infiltration anesthesia was used with a 4% solution of articaine with epinephrine 1: 100 000 and 1: 200 000 at a dosage of 0.5-0.7 ml. The temperature distribution in the study area was estimated using a thermal imager Nec InfReC Thermo Gear G30. RESULTS: The study showed that the use of epinephrine in local anesthetics naturally has a moderate effect on hemodynamics in areas adjacent to the anesthesia depot. When using a low concentration of epinephrine (1:200 000), the projection hyperthermia of the skin is determined. Perhaps this is due to the activation of microcirculation due to an increase in capillary blood flow in the region above the zone of action of the epinephrine. From the point of view of physiological arterial hyperemia, this mechanism carries positive properties, since leads to an increase in tissue oxygenation. When using a high concentration of epinephrine (1:100 000), the zone of hypothermia of the skin is determined, which corresponds to the phenomenon of angiospastic ischemia.

© 2018 Saint Petersburg Pasteur Institute. All rights reserved. Nowadays sepsis is grave complication of infection end the cause of death reanimation. In this survey, we would like to emphasize the importance of the control over the activation over the compliment system. It has been proved of animal model a complement one of the key role in the development of hyperactive immunity response, later resulting in violation of immunity homeostasis. Mice which had C3-/-, C4-/-deficit, aft receiving a LPS dose intraperitoneallis showed a better survival to compare with the control group of animals. There exist clinical data which confirm active participation of the compliment in the chain of the septic process. The research showed the patient affected by sepsis, had protein C3 and C4 concentration correlating which mortality at the time of diagnosis. The is chemoattractants, protein C3a and C5a, turn tube the result of complements pathway activation. The chemoattractants, provoke the extraction a big number of cytokines. Vessels permeability increase and DIC-syndrome activation wis it, multiple organ dysfunction develops. Ishemiareperfusion launch triggers aseptic inflammation, which appears decentralization and DIC-syndrome. C1-INH controls the work of classical way complement and Hemostasis System. Researchers the deficit in C1-INH animals and patients affected bay sepsis, which is proved in laboratory and clinics. The remedy C1-INH (Berinert, CSL Behring) appeared over 25 years ago and was used and therapy hereditary angioedema. For the lasted years we accumulated a considerable quantity of fasts of C1-INH use which after pathologies: heart attack, Ischemia-reperfusion injury, trauma provoked by cardiopulmonary bypass. The use of C1-INH on animal models septic in clinical research their efficacy and safety.

© 2018 by the authors. A recently discovered key role of reactive oxygen species (ROS) in mitochondrial traffic has opened a wide alley for studying the interactions between cells, including stem cells. Since its discovery in 2006, intercellular mitochondria transport has been intensively studied in different cellular models as a basis for cell therapy, since the potential of replacing malfunctioning organelles appears to be very promising. In this study, we explored the transfer of mitochondria from multipotent mesenchymal stem cells (MMSC) to neural cells and analyzed its efficacy under normal conditions and upon induction of mitochondrial damage. We found that mitochondria were transferred from the MMSC to astrocytes in a more efficient manner when the astrocytes were exposed to ischemic damage associated with elevated ROS levels. Such transport of mitochondria restored the bioenergetics of the recipient cells and stimulated their proliferation. The introduction of MMSC with overexpressed Miro1 in animals that had undergone an experimental stroke led to significantly improved recovery of neurological functions. Our data suggest that mitochondrial impairment in differentiated cells can be compensated by receiving healthy mitochondria from MMSC. We demonstrate a key role of Miro1, which promotes the mitochondrial transfer from MMSC and suggest that the genetic modification of stem cells can improve the therapies for the injured brain.