Modulation of Circumstellar Extinction in a Young Binary System with a Low-Mass Companion in a Noncoplanar Orbit

The cyclic activity model of a young star with the low-mass secondary component (q = M2/M1 <= 0.1) accreting a matter from circumbinary disk is considered. It is assumed that the orbit is circular and the disk and orbital planes are non-coplanar. Sets of hydrodynamics models of such a system have been calculated by the SPH method and then the variations of the circumstellar extinction and phase light curves were determined. The calculations showed that depending on the model parameters and orientation of the system in regards to an observer the different in shape and amplitude light curves can be observed. An important property of the considered models is also the dependence of the mass accretion rate onto the components on the phase of the orbital period. The results of the calculation can be used for analysis of the cyclic activity of UX Ori stars and young stars with the long-lasting eclipses.Comment: 14 pages, 7 figure

Non-alcoholic fatty liver disease and type 2 diabetes mellitus: the problem of conjunction and phasing

The widespread prevalence of non-alcoholic fatty liver disease (NAFLD) and type 2 diabetes mellitus (T2DM), as well as their combination, determines the need for a targeted analysis of this pathology in order to optimize approaches to the diagnosis and treatment of patients with NAFLD and T2DM. As components of the metabolic syndrome, these two diseases have largely similar mechanisms of development and progression, simultaneously increasing the risk of adverse outcomes in comorbid patients. Despite the common pathophysiological mechanisms, the question of the development of NAFLD and T2DM remains significant.Upon conducting literature analysis, two main theories have been identified: alimentary and metabolic. According to the alimentary theory, the primary link in the pathogenesis is obesity and the associated excessive accumulation of free fatty acids and triglycerides in the liver, which subsequently leads to insulin resistance and the development of T2DM. In contrast, the metabolic theory considers diabetes-related insulin resistance as the first hit, which, regardless of obesity, creates preconditions for liver damage. In addition, the review focuses on the consideration of the new concept of Metabolic associated fatty liver disease (MAFLD) as a hepatic manifestation of the metabolic syndrome and considers the clinical phenotypes identified within this pathology. In conclusion, pathogenically based treatment goals in patients with NAFLD and T2DM are overcoming insulin resistance, correcting atherogenic dyslipidemia, and restoring the structures and functions of liver cells

Advantages of physical activity of varying intensity for patients with type 1 diabetes and its influence on glucose metabolism

Patients with type 1 diabetes mellitus (T1DM) have many benefits from regular exercise, including improved quality of life, lower blood pressure, improved lipid profile, increased insulin sensitivity, decreased insulin dose requirements, improved endothelial function, and reduced risk of micro- and macrovascular complications, as well as overall mortality. Despite these benefits, T1DM patients often do not get enough physical activity (PA) and are less physically active than their non-diabetic peers. The main reason for the low PA in patients with T1DM is the difficulty of glycemic management and the fear of developing hypoglycemia during exercise. Different types of training, such as moderate to high intensity exercise, high intensity interval training, have different effects on glycemic activity during exercise, which can be used to prevent the development of hypoglycemic reactions during and after exercise, along with carbohydrate intake and insulin dose adjustment. Higher-intensity exercise, as well as greater frequency and duration, are associated with a greater reduction in the risk of overall and cardiovascular mortality. Regular physical activity has a positive effect on reducing the risk of micro- and macrovascular complications, general and cardiovascular mortality in patients with type 1 diabetes, regardless of the quality of glycemic control, which can be used for prevention of T1DM complications

Prediabetes. A new paradigm for early prevention of cardiovascular disease

This literature review focuses on the association of prediabetes with cardiovascular disease (CVD). Recently, much attention has been paid to the study of prediabetes due to its extremely high prevalence and strong association with a high risk of developing serious complications that worsen the quality of kife of patients. Prediabetes is not only a metabolic condition with a high risk of developing type 2 diabetes mellitus (T2DM), but also CVD and death from all causes. This association is true for both patients who do not yet have CVD and those with a history of CVD. Also during the COVID-19 pandemic, attention is drawn to the fact that people with prediabetes have a higher risk of a severe course of infection, complications and a worse prognosis of the disease. This is associated with hyperglycemia, the  presence of  chronic systemic inflammation of  a  low degree of  activity, impaired immune response mechanisms and a procoagulant state in patients with prediabetes, although these disorders are less developed than in patients with T2DM. Therefore, early screening of early disorders of normal metabolism. Since active early intervention at the stage of prediabetes helps to prevent the development of type 2 diabetes and CVD

Dietary fiber is a reliable and apparent element of treatment for patients with type 2 diabetes mellitus and cardiovascular diseases: an easy solution to a complicated problem

Cardiovascular diseases are a frequent comorbid condition in patients with type 2 diabetes mellitus (t2DM). This problem tends to remain acute because of the progression of t2DM, which increases the chances of cardiovascular events. Medicine today has a range of innovative hypoglycemic drugs, which proved their safety and effectiveness towards diseases of cardiovascular system. However, high cardiovascular mortality demonstrates that the medication is not enough effective. Partly lack of success may be explained by not enough work with unmodified risk factors, such as physical activity, smoking and excessive and wrong nutrition. Studies about dietary fiber (DF) let us discuss their including in the dietary plan of patients with t2DM and cardiovascular diseases. One of the promising DF types is Cyamopsis tetragonoloba extract. It showed its effectiveness concerning carbohydrate metabolism and lipid profile, improving, metabolic features of t2DM patients and lowering the risks of cardiovascular events. What is more, the advantage of Cyamopsis tetragonoloba extract is easy to use and has no side effects

Practical implementation of 3D CBCT tomography in dentistry, diagnostics of the affects of maxillofacilal area and ent-organs

Objective: To determine the peculiarities of CBCT tomography implementation in dentistry, diagnostics of the affects of maxillofacial and ENT-organs, to formulate a contraindication and indication for the method of examination, to reveal the advantages and disadvantages of the method and to introduce the advanced algorithms of radiology to dentists, oral surgeons and otolaryngologists. Materials and Methods: The report presents the experience of the network of offices of CBCT tomography (Kiev, Kharkov,Odessa, Donetsk), the archives of 2008 through 2011 were involved into the research; the patients from Surgical Rehabilitation Department of the Institute of Dental Sciences of the Academy of Medical Sciences of Ukraine in Odessa, Plastic Surgery Clinic “Virtus” in Odessa, Clinic of Maxillofacial Surgery of Military Medical Clinical Center of the Southern Region of Odessa were involved. The surveys were carried out on CBCT tomographs manufactured by “Vatech”. The main methods were CBCT tomography of the two jaws relation, midface, nose sinuses and temporal bone. Most studies were performed before and after surgical and conservative treatment, patient age ranged from 3 to 86 years old. The most common pathologies were traumas, inflammatory processes, cysts, debride, congenital malformations, secondary edentia Results and Conclusions: during the examination we managed to obtain high quality images of hard tissue, to determine the localization of pathological formations of bone fractures, the location of cysts of the jaws and nose sinuses, nasal polyps, to determine the presence or absence of maxillary antrum in­flammatory process, as well as its origin (odontogenic sinusitis). High resolution and high-quality threedimensional reconstructions allowed optimal defining and planning the scope and method of surgery in the short term, planning the most successful surgical treatment, determining the anatomical features of the channel, selecting the successful scheme of conservative therapy. The surveys that have been carried out in dynamics, helped to evaluate the cosmetic and functional results of reconstructive and plastic surgery, prevented the occurrence of complications, determined the effectiveness of conservative therapy. Based on these data, the peculiarities of the implementation of CDCT tomography in dentistry and diagnosing the affects of maxillofacial area, ENT - organs, have been determined, the contraindications and indications for the method of the survey have been formulated; the advantages and disadvantages have been revealed; the advanced algorithms of radiology have been introduced to dentists, oral surgeons and otolaryngologists

Metabolic and cardiovascular features of the course of type 2 diabetes mellitus in men with hypogonadism

Introduction. Androgenic deficiency is an important pathogenetic element in the development of metabolic syndrome and cardiovascular diseases in men. It has been proven that in male patients with type 2 diabetes, hypogonadism develops much more often. Objective – to study the metabolic and cardiovascular features of the course of type 2 diabetes mellitus (T2DM) in men with androgen deficiency.Materials and methods. The study included 124 men with type 2 diabetes. To diagnose hypogonadism, the levels of total testosterone (T), sex hormone binding globulin (SHBG), albumin and luteinizing hormone (LH) were measured. Free testosterone (free T) levels were calculated using a calculator from Ghent University Hospital, Belgium. A retrospective analysis of case histories was carried out (spectrum of late complications, the presence of heart attacks and strokes, laboratory data – total cholesterol (CS), triglycerides (TG), fasting blood plasma glucose, basal insulin level, glycated hemoglobin (HbA1c)). The HOMA-IR index was used to determine the degree of insulin resistance.Results. The average age of men was 57.39 ± 9.41 years. The incidence of laboratory-confirmed hypogonadism is 50.81%. An average positive correlation was found between androgen deficiency and the incidence of non-fatal cardiovascular events (r = 0.45, p &lt; 0.05). There was no statistically significant relationship between the presence of hypogonadism and the incidence and degree of late complications of T2DM. Patients with low T levels tended to have higher HOMA-IR values compared to patients with normal T levels (p &lt; 0.05). At the same time, the indicators of carbohydrate and lipid metabolism did not differ significantly in these groups (p &gt; 0.05).Conclusions. The revealed incidence of hypogonadism in men with T2DM corresponds to the data of international studies. The presence of a significant correlation between low testosterone levels and cardiovascular events in patients with T2DM suggests that hypogonadism can be used as an additional criterion for cardiovascular risk. Testosterone deficiency exacerbates insulin resistance, which can lead to weight gain and impair carbohydrate metabolism