Статьи журнала - Cardiometry
Все статьи: 527
Статья научная
The aim is to study the effect of comorbid pathology, namely, diabetes mellitus, on free radical oxidation in the mitochondria in the heart cells in female rats with experimental Guerin carcinoma.
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Статья научная
The aim of present study was to compare the effect of Ca chelating anticoagulants (EDTA, citrate and oxalate) and antithrombin anticoagulant (heparin) on some rabbits plasma biochemical parameters at room temperature 25°С and extreme temperatures -18°С and 50°С for 1hr. Five male rabbits weighting between 800-1000gm, kept in the animal house /College of Veterinary Medicine/University of Diyala, under 12:12 dark light cycle with ad libtum food and water in individual cages (60cm,40cm) during November and December /2022. Four ml of blood samples were collected by cardiac puncture (23G needle) into four tubes contain anticoagulants: (EDTA, citrate, oxalate and heparin)one ml of blood for each tube; then the blood samples were kept at :room temperature 25°С, waterbath 50°С and refrigerator -18°С, for 1hr then put in centrifuge at 3000rpm for 15min. From total examined blood samples =24 for each Ca chelating anticoagulants (EDTA, citrate and oxalate) and antithrombin anticoagulant (heparin) after 1hr under in 25c°С, -18°С and 50°С. The both groups of anticoagulants (Ca chelating and antithrombin) showed no significant differences P>0.05 between them in level of biochemical parameters (glucose, total protein, cholesterol and urea) after 1 hr at 25C; on the other hand significant increase in plasma glucose, total protein and cholesterol beside significant decrease in plasma urea of Ca chelating anticoagulants after 1hr at -18C and 50C as compare with antithrombin anticoagulant. In conclusion; heparin was more effective than Ca chelating anticoagulant in preserve plasma biochemical parameters within normal values under extreme cool and hot condition
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Статья
Over the past decade, the use of adoptive immunotherapy has emerged as a promising approach to treatment of various malignancies, including breast cancer. Cytokines are involved in the development, differentiation and homeostasis of the T cells. Despite the similarities in signaling pathways, the γc cytokines shape the T cell responses differently: IL-2 plays a major role in the development and maintenance of the regulatory T cells, while IL- 15 stimulates the proliferation and cytotoxic functions of the CD8+ T cells and NK- cells that leads to an enhanced antitumor response. It is of interest to study the combined effect of these cytokines in an experiment.
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The effects of essential oils and music on the bioelectrical activity in brain
Статья научная
We studied the effect of essential oils and music fragments, as well as their various combinations on the brain’s electrical activity parameters. We showed the character of their impact on the basic EEG frequency bands, identified localization of sources for specific activity. It was found that the olfactory and musical influence of different modalities have unidirectional effect on the bioelectric activity indices. This EEG response is most likely associated with a common mechanism for implementing the effects of audio and odorant stimulants. It was found that the response to the combinations of sensory effects has different intensity. These data permit the sensory effects to be ranked in terms of their activation level, which makes it possible to purposefully influence the psycho-emotional states. Our findings are the basis for developing further methods and programs of modifying the athletes’ functional states
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Отчет
The article presents the results of space experiment “Pneumocard”. The investigation involved all 25 Russian members of the ISS crew. The total of 226 sessions were made including 130 aboard the ISS, 50 prior to launch and 46 on return from mission. The objective was to study effects of the spaceflight factors on autonomic regulation of blood circulation, respiration and cardiac contractility during long-duration mission. The purpose was to secure new research data that would clarify our present view of adaptation mechanisms. Registered were the following signals: electrocardiogram, impedance cardiogram, seismic cardiogram, pneumotachogram, finger photoplethysmogram. A set of hard- and software was used. Autonomic regulation of blood circulation by HRV analysis was investigated. It was shown that at the onset of a space mission parasympathetic involvement in regulation increases typically with subsequent mobilization of additional functional reserve. It guided the development of a functional states mathematical model incorporating the established types of autonomic regulation. Our data evidence that the combination of HRV analysis, pre-nosology diagnosis and probabilistic estimate of the pathology risk can reinforce the medical care program in space missions.
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The immune system and malignant neoplasms: fundamental and translational aspects
Статья
The immune system is responsible for control of the antigenic continuity, ensuring the friend-orfoe identification and the formation of appropriate responses by the organism, aimed either at destruction (in case of infection with infectious pathogens and transplantation of an alien graft), or protection of the "foe" to be incorporated by the host organism (under physiological pregnancy, or in case of pathology under malignant growth) [1]. The immune system closely interacts with the DNA Damage Response (DDR) system, which, together with other signaling pathways, ensures the repair of damaged genetic material. In the presence of a defect in the repair system, for example, with congenital mutations in the BRCA 1/2 repair genes, genomic instability appears as a basis for the development of cancer. This determines clonal evolution through an accumulation of driver aberrations (CNA, chromosomal rearrangements, mutations), malignancy, and progression of a malignant process, primarily associated with distant metastases [2].
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Статья научная
Background Implantation of multiple (≥ 2) overlapping stents has been associated with adverse outcomes after percutaneous coronary intervention (PCI). However, data regarding the impact of multiple new generations drug-eluting stents (DES) during primary PCI (PPCI) are limited. Objective To evaluate the impact of multiple overlapping stents implantation on the 6-months clinical outcomes of anterior STEMI patients undergoing PPCI with new generations DES. Methods We evaluated a total of 1078 consecutive anterior STEMI patients who underwent PPCI with deployment of new generations DES. The patients were divided according to the number of implanted stents into 2 groups; multiple-stents group having ≥2 overlapping stents (n =388) and single-stent group (n =690). We compared the rates of major adverse cardiovascular events (MACEs; composite of cardiac death, reinfarction, ischemia-driven target vessel revascularization (TVR), definite stent thrombosis (ST), and stroke) between the 2 study groups. Results There was a non-significant trend toward increased in-hospital mortality in the multiple-stents group [3.4% vs 1.7%; P=0.096]related to a significant higher rate of cardiogenic shock [9.5% vs 6.1%; P=0.037] and post-procedural suboptimal TIMI flow [26.3% vs 19.4%; P=0.009] as compared to the single-stent group. Yet, there were no significant differences between the 2 groups in the incidence of 6-month MACEs: [9% vs 7.1%; P=0.259], cardiac death: [4.6% vs 3%; P=0.173], reinfarction: [3.6% vs 3.2%; P=713], TVR: [4.4% vs 4.1%; P=0.799], and definite ST: [3.6% vs 2.8%; P=0.43], respectively. Conclusion The use of multiple new generations DES, if needed, is relatively safe and acceptable during PPCI for STEMI patients.
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The impact of rock music on Indian young adults: a qualitative study on emotions and moods
Статья научная
Music has proven to play a vital role in social and emotional development in teenagers and young adults. From contemplation, developing self-identity, understanding interpersonal relationships, and providing possibilities of experience mastery, agency, and self-control with the help of self-directed activities, music helps its audience develop in all aspects of life. In specific, Rock music, since its existence has been more than entertainment, artists expressed themselves and shared their opinions through their musical pieces. Infamous for promoting drugs and alcohol, Rock Music used its platform to enlighten the audience about taboo topics like racism, inequality, and other social issues. This research paper uses a qualitative methodology approach to understand Rock Music listeners’ points of view. Data was collected through ‘in-depth interviews’ of 15 participants hailing from different parts of the country. Rock Music has several positive effects on the listeners. Rock can elevate moods, induce emotions, helps the listeners be more productive and creative with their everyday work, and constantly motivate them to do better in every aspect of life. Rock provides a platform to express feelings and vent out all the angst, especially for those who otherwise do not voice their opinions because of their nature in general. Rock Music has been able to shape personalities, characteristics, and thought processes. Moreover, majorly, Rock Music helps people with anger management.
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Статья научная
The article discusses the promising possibilities of using the method of volumetric compression oscillometry in clinical practice, which allows to simultaneously determining 20 indicators of central hemodynamics. A comparative analysis with other research methods is presented herein, and the advantages of the presented method in the diagnostics of cardiovascular diseases are shown. The problematic issues in using this method and ways to solve them are considered herein.
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Статья научная
The aim is to assess the incidence rate of arterial hypertension (AH) and high normal arterial pressure (HNAP) in students of the Medical Faculty at the Kabardino-Balkarian State University as well as the relationship between arterial pressure (AP) and behavioral and biological risk factors (RF) of cardiovascular diseases (CVD) to substantiate the need for preventive measures
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Статья
Melanoma is the most aggressive of the common forms of skin cancer. Proinflammatory cytokines produced by the tumor and delivered via the circulatory and lymphatic systems can lead to damage to the structures of the central nervous system. Damage to the blood-brain barrier and the endothelium of blood capillaries can cause dysfunction of neurons in the cerebral cortex, induce changes in neural plasticity, cognitive functions and result in the development of depression. Depression is observed in 20% of the cancer patients, and it affects quality of life, treatment effectiveness and survival. Depression has been linked to damage to the prefrontal cortex, which plays an important role in many brain functions, including cognition, emotion regulation, motivation and sociability.
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Статья научная
With the participation of 8 male volunteers, the dynamics of values of heart rate autonomic regulation were studied at response to physical load on a bicycle ergometer twice: both respirating by the room air under normobaric environment and simulating effects of the altered hyperoxic respiratory gas mixture (HRGM) by the rebreathe respiration methods from a rebreather at the high-pressure chamber (at «depth» 7 m). The devices and methods of Holter electrocardiogram monitoring were used under 24 hours research. The specialized software to analyze the data was used. The electrocardiogram (ECG) and calculated time series of cardiac intervals data obtained were subjected to mathematical processing to calculate statistical and spectral values of heart rate variability (HRV). Additionally, the geometric and nonlinear analysis methods of HRV were investigated. It has been established that influencing factors (compound and pressure of the HRGM) affect the autonomic regulation of heartbeats both at rest and during physical load. Clinical practitioners the HRV values are studied at rest and during strictly regulated tests, i.e. in stationary conditions.non-stationary processes, for example, when it is necessary to continuously analyze data, the so-called transient processes under increasing psychological stress, to assess changes in the autonomic regulation of the heart during breathing of gas mixtures with different compositions (hypoxic therapy, hyperbaric oxygenation, etc.), and, especially during physically upload are used the methods of nonlinear and geometric analysis of HRV that are independent of the degree of nonstationary processes and, to some extent, of artifactual cardiac intervals. During the breathing the respiratory gas mixtures with an increased substance of O2 under conditions of high pressure, the activity of the parasympathetic branches of the autonomic nervous system (ANS) significantly increases. The nonlinear dynamics indexes reflect significant differences in the activity of autonomic components under experimental conditions in the direction of strengthening the parasympathetic links of the ANS. The use of nonlinear analysis values is more acceptable when evaluating obtained of non-stationary processes. In general, the study confirms that the regulatory response to the effects of hyperbaria and hyperoxia when performing a bicycle ergometer test with stepwise increase exercise strain is manifested by the prevalence of the activity of the parasympathetic part of the ANS autonomic regulation of cardiac rhythm compared to regular room air and barometric pressure.
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Статья научная
The article is devoted to the study of the cardiovascular system indicators in students under the conditions of exam stress. As a result we have found that students have experienced severe stress before the examination and after it that has negatively affected their hemodynamic parameters, which have shown high values indicating overstrain of the adaptation mechanisms
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The j wave: why so many contradictions and confusion in interpretation of its diagnostic value?
Ред. заметка
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Статья обзорная
Design of an effective succinate-based agent for the use in sports has required a profound analysis of the main action mechanisms of the agent in question. Our paper reflects basic principles, which are decisive for the design of the offered succinate-based agent to increase the organism performance and the rate of recovery after intensive physical loading. We have treated a special role of the metabolic conversions of succinate in energy exchange of mithochondria: high energy efficiency, possibility of beneficial oxidation under oxygen deprivation, anaerobic formation and possible consequences of the above phenomenon. The listed key factors have determined the applications of succinate in practice in order to maintain the energy exchange as well as design a number of anti-hypoxia means. It is assumed that the treated peculiarities of the succinate metabolism can provide the basis for formation of a signal, regulatory role of this molecule in the organism environment.
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Статья научная
The limitations of capabilities of the existing mathematical weather prediction (including forecasting for weather-sensitive individuals) cannot be duly realized nowadays due to the fact that till now there is no proof of the existence and uniqueness of smooth solutions of the three-dimensional (3D) Navier-Stokes equation (in any finite period of time). We have obtained a new analytical solution of the Cauchy problem of this equation in an unbounded space, which has finite energy for any values of time.
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Статья
All human health, from the cellular level to overall well-being, is inextricably linked to the health of our mitochondria. This article delves into the concept of mitochondrial training, focusing on Hypoxic Intermittent Training (HIT) as a central method for improving mitochondrial function. It is becoming increasingly clear that various diseases, stress, shock, inflammation, aging, and organ failure are primarily the result of respiratory problems that directly affect mitochondrial health. The regulation of metabolism is closely related to gas exchange, and the composition of the gases we breathe regulates our metabolism. Our main goal is to promote efficient mitochondrial function, a key biological imperative
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Статья научная
The mechanisms of anti-tumor action of low intensity factors of activation therapy remain little investigated. The aim of the present paper is to study the changes in the immune system organs, the state of blood leukocytes and tumor area under effective activation therapy in tumor-bearing animals using EMR microwave range. The research is relevant due to the immune processes influence on cardiovascular system performance. Materials and methods In experiments on 77 albino outbred male rats with inoculated sarcoma-45 and Pliss lymphosarcoma tumors low intensity EMR of microwave and EHF ranges with bioeffective frequencies has been used as an activation therapy factor. The structural-functional changes in the immune system organs, some indices of blood leukocyte activity, composition of immune cells infiltrating tumors when inhibiting their growth and regression have been studied. Besides, the signs of intercellular interactions with participation of leukocytes in the tumor area have been considered...
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Статья научная
Considering a life cycle, we can find an interesting feature: it is linked to the performance of the cardiovascular system and it is determined by two factors as follows.
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Статья научная
During the pandemic of coronavirus infection, medical staff around the world has faced the problem of a significant deterioration in the health conditions of patients, who have a history of type 2 diabetes mellitus and who have infected with COVID-19.The problem of the combination of the coronavirus infection and diabetes mellitus is urgent and requires an indepth study in this context. This article presents and reviews some results of an experiment during which the clinical indicators of 15 patients with type 2 diabetes mellitus, with elevated glycated hemoglobin, infected with coronavirus infection, aged 45 to 65, were taken on the 14th day of observation.
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