In this work we solve the problem of automatic binary classification of subjects with a diagnosis of schizophrenia and control groups on a data set obtained on a Siemens 3T tomograph. The data set included 36 subjects undergoing treatment at Psychiatric Hospital no. 1 Named after N.A. Alexeev of the Department of Health of Moscow (GBUZ PKB No. 1 DZM) and 36 subjects from the control group. Machine learning methods were used to solve this problem. As a result, an accuracy of 76% was achieved, which corresponds to the results obtained in other scientific studies. The highest accuracy was obtained for the local homogeneity parameter (regional homogeneity - ReHo), already known in the literature. At the same time, the set of features developed by the authors based on the method for identifying functionally homogeneous regions (FHR) gave a classification accuracy of 74%. But at the same time, the set of FHR features provides higher classification accuracy when using a small number of brain regions. For example, already in 8 regions, the FHR set provided an almost maximum classification accuracy of 72.5% (versus 65% for the ReHo set), which suggests that it is the selected 8 regions that give the highest level of separation.

A new dangerous respiratory disease COVID-19 was first reported in China in December 2019, the pathogen SARS-Coronavirus 2 (SARS-CoV-2), belonging to the beta coronavirus genus, which, in addition to SARS-CoV-2, includes SARS-CoV-1 and MERS-CoV. The genome of SARS-CoV-2 is almost 80% similar to SARS-CoV-1 and 50% to MERS-CoV. The mechanisms of infection of SARS-CoV-1 and SARS-CoV-2 are also similar and occur through the binding of the virus to the type 2 angiotensin-converting enzyme protein (ACE2), which is widely represented in the human body with predominant expression in endocrine tissues. In this connection, SARS-CoV-1 and SARS-CoV-2 affect the organs of the endocrine system, causing damage and hormonal changes that affect the prognosis of the course of COVID-19. This literature review is devoted to the analysis of changes in the organs of the endocrine system that occur during infection with SARS-CoV-1 and SARS-CoV-2, as well as the potential effect of hormones on susceptibility to SARS-CoV-2.

This work presents data on the problem of ischemic heart disease, surgical myocardial revascularization, as well as the risk of developing acute cerebrovascular accident (ACVA) in elderly patients with coronary-artery bypass grafting (CABG). We conducted a study to identify risk factors for the development of ACVA in elderly patients. Predictors of ACVA development in the operative and early postoperative periods are identified. It is proven that the time of extubation, increased PCO2 levels, and hyperlactatemia are reliable intraoperative and early postoperative predictors of ACVA in elderly patients with CABG. The practical significance of the study lies in the application of its results to predict the development of perioperative stroke in elderly patients with CABG.

The phenomenon of human aging is the result of a complex interaction among several factors in which the immune system plays a key role. Cortisol is a glucocorticoid secreted by the adrenal gland and has a specific secretion pattern. The current study aimed at identifying the cause and pathogenesis of premature aging using biological markers. This study was performed based on the results of clinical and instrumental examinations on 91 middle-aged men aged 45-59 years. VaseraVS-1500 sphygmomanometer based on standard methods was used to measure biological age. The relationship between biological age and circadian rhythms of cortisol secretion was calculated to elucidate the pathophysiological mechanisms of aging development. The recorded data showed that the violation of the circadian rhythms of cortisol secretion characterized by a consistently high level of the hormone throughout the day was typical among individuals with accelerated types of aging. Based on the obtained data, a formula for determining the biological age of the studied groups of patients was prepared by considering the circadian rhythm of cortisol secretion, which can be an additional tool for early detection of aging in men.

Среди множества гериатрических синдромов несомненно одно из первых мест занимают старческая астения и саркопения. Несмотря на широкое их освещение в современной научной медицинской литературе, до сих пор актуальным остается вопрос о взаимосвязи этих гериатрических синдромов. Какой из вышеуказанных синдромов является первичным, а какой - вторичным? Они конкурируют между собой, взаимно отягощают друг друга, не зависят один от другого либо же объединены общими патологическими механизмами? Рассмотрению этих вопросов посвящен данный обзор литературы. Among the many geriatric syndromes, undoubtedly, one of the first places is, in other words, the leading positions are occupied by frailty and sarcopenia. Despite their wide coverage in the modern scientific medical literature, the question of the relationship of these geriatric syndromes with each other is still relevant. Which of the above syndromes is primary and which is secondary? Do they compete with each other, mutually burden each other, do not depend on each other, or are they united by common pathological mechanisms? This literature review is devoted to these issues.

In studies Romanchuk N. P. from invention in 2010 (A method for producing a cereal component for an instant food product and a method for producing a functional instant food product. RF patent for invention №2423873, consisting in increasing the preventive effect on the human body through the introduction of vital food substances into a functional food product to suppress free radical activity, invasive detoxification of the human body, optimizing neurogenic regulation of vascular tone in arterial hypertension and restoring reproductive functions in males and females by optimizing the quality structure of product components), to the present (https://doi.org/10.33619/2414-2948/58/14) it has been shown that a new managed healthy biomicrobiota and personalized functional and balanced nutrition of the “brain and microbiota” is a long-term medical program of the patient, which allows the combined use of nutritional epigenetics and pharmaceuticals, and most importantly the prevention of polypharmacy. The main engine of human longevity is when microbiological memory remains stable, and the diet of functional (healthy) dietary nutrition and the structure of healthy biomicrobiota function almost unchanged. The human microbiome is a collection of all microbes that inhabit the body. The human gut microbiome is a unique collection of microorganisms that affect a number of important processes: from metabolic and immune to cognitive, and deviation of its composition from the norm leads to the development of various pathological conditions. Harmful changes in the composition or number of gut bacteria, commonly referred to as intestinal dysbacteriosis, have been associated with the development and progression of numerous diseases, including cardiovascular (CVD) diseases. Most CVD risk factors, including aging, obesity, certain dietary patterns, and sedentary lifestyles, have been shown to cause bowel dysbiosis. Dysbacteriosis is associated with gut inflammation and reduced gut barrier integrity, which in turn increases levels of circulating structural components of bacteria and microbial metabolites that may contribute to CVD development. The purpose of the present review is to summarize available data on the role of the gut microbiome in the regulation of cardiovascular function and pathological processes. Particular attention is paid to dietary-related microbiome changes, as well as cellular mechanisms by which the microbiome can alter CVD risk.

Against the background of aging, there is an increase in the number of diseases associated with age, geriatric syndromes that contribute to the development of disorders of physical and functional activity, the risk of disability and mortality increases. One of the widespread diseases is chronic kidney disease (CKD), which is dangerous not only in itself, but also as a factor in the progression of other age-associated diseases and geriatric syndromes, including frailty and sarcopenia. Among patients of older age groups, CKD is more common in women than in men. A number of researchers are studying the problems of polymorbidity, the development and progression of geriatric syndromes in patients with CKD in the pre-dialysis and dialysis stages. Undoubtedly, the negative role of severe late stages of CKD in the development of senile asthenia and sarcopenia, at the same time, the relationship of these geriatric syndromes with early pre-dialysis stages of CKD has been insufficiently studied. Therefore, it is of undoubted scientific interest to identify correlations between signs of sarcopenia and frailty in elderly and senile women, depending on renal function, stage of CKD.

The growth in the world population of elderly and senile people provokes interest in the processes and mechanisms leading to aging and age-associated diseases. Hypovitaminosis D is common in geriatric patients and has been suggested by a number of authors as a cause of diseases such as dementia and sarcopenia. This literature review is devoted to the analysis of the role of vitamin D in the development of the above diseases, their prevention and treatment.

Calcium preparations are included in the treatment and prevention regimens for low bone mineral density. However, recent scientific studies have shown that additional calcium intake can increase the risk of heart disease, which is associated with the deposition of calcium in the endothelium of blood vessels. The significance of vascular wall mineralization is not limited to local accumulation of calcium deposits, but is largely determined by their activating effect on the progression of atherosclerosis. Vitamin K plays an important role in calcium homeostasis, reduces arterial calcification and arterial stiffness and, as a result, has a protective effect when taking calcium. This literature review provides current information about the calcium paradox, discusses the main molecular mechanisms of vascular calcification, and considers therapeutic strategies for vitamin К2 treatment.

Objectives to identify the correlations between the Charlson comorbidity index and the results of functional activity tests as predictors of sarcopenia among elderly and senile women with polymorbidity. Material and methods. The study included 269 elderly and senile women aged from 65 to 84 years, having polypathology. Results. Sarcopenia was detected in 14.63% of the elderly, and in 27.40% of senile women. The Charlson comorbidity index was associated with the risk of progression of frailty, a decrease in basic functional activity, increased muscle weakness and impaired function of skeletal muscles. Conclusion. Dynamometry and functional activity tests can be used in clinical practice to diagnose sarcopenia syndrome in elderly and senile women.

Against the background of an aging population, there is an increase in the frequency and prevalence of chronic non-infectious diseases with age. The syndrome of frailty, the frequency of which also increases with aging, is considered as a prognostic factor for the adverse outcomes of chronic diseases and mortality among geriatric patients. Moreover, in women, frailty is more common than in men. An earlier diagnosis and identification of signs of frailty is necessary to prevent the progression of both the syndrome itself and multiple age-associated chronic diseases.

Долгожительство – уникальный образец физиологического старения, медленных инволютивных изменений, длительного поддержания гомеостаза и высокого адаптационного потенциала. В связи с этим, представляет несомненный интерес не только в научном, но и в прикладном аспекте, изучение физиологических и патологических особенностей долгожителей различных природно-географических, социальных и экологических зон. Цель: изучение заболеваемости, антропометрических и клинико-лабораторных показателей у долгожителей Самарской области. Материалы и методы: в основу нашей работы положен анализ результатов обследования 62 долгожителей в возрасте от 90 до 101 года, средний возраст 92,29±2,40 лет. Исследование является одномоментным, выборочным. Проводился анализ структуры заболеваемости долгожителей, исследовались антропометрические характеристики и клинико-лабораторные данные. Результаты. Для долгожителей характерно наличие полиморбидности, большинство заболеваний носят хронический характер и находятся в стадии ремиссии, индекс коморбидности Charlson в обследованной популяции долгожителей Самарской области составляет 8,37±2,55 баллов, не имея гендерных различий. Анализ антропометрических показателей показал преобладание нормостенического телосложения среди лиц, перешагнувших 90-летний рубеж. Изучение лабораторных показателей выявило тенденцию к динамическому повышению в популяции долгожителей Самарской области общего холестерина и триглицеридов на фоне увеличения липопротеидов высокой плотности и снижения липопротеидов низкой плотности. При отсутствии резких отклонений уровня креатинина у долгожителей от референсных значений, у мужчин выявлено снижение почечной функции до значений СКФ (скорости клубочковой фильтрации) 64,38±18,15 мл/мин/1,73м2, у женщин значительное уменьшение до 44,82±14,56, мл/мин/1,73м2. Выводы. Долгожительство – это пример наследственного здоровья, сохраненный в условиях полиморбидности. Несмотря на удовлетворительный адаптационный потенциал, при динамическом наблюдении за долгожителями необходимо особое внимание уделять функционированию почек, производя расчет скорости клубочковой фильтрации, а не рутинное определение креатинина.

Rationale: The progressive decline in skeletal muscle strength and function during aging can lead to disability and premature death. It is of interest to evaluate the potential of bioimpedance phase angle (PhA) as an instrumental marker of sarcopenia in clinical practice.Aim: To identify an association between the phase angles determined by the bioimpedance analysis of body composition, with functional activity parameters in elderly women with multiple comorbidities.Materials and methods: The study included 146 elderly women (aged 75 to 84 years, mean age 79.44±2.56 years). Assessments consisted of the Charlson comorbidity index, “Vozrast ne pomekha” (Age is not a hindrance) questionnaire, the Barthel index, the sit-to-stand five-repeat test, the standardized 4-meter walking speed test, and bioimpedance analysis of body composition (ABC02, Medass, Russia). Muscle strength parameters were assessed by wrist dynamometry with a mechanical wrist dynamometer. The hand dynamometry index was calculated by dividing the hand grip strength by the patient's squared height. According to the EWGSOP2 guidelines for the critical cur-off for hand dynamometry, the patients were divided into two groups: those with the hand grip strength>16 kg (n=41) and those with<16 kg (n=105).Results: There were significant correlations of PhA with age (r=-0.369; p=0.017), the results of the screening questionnaire “Vozrast ne pomekha” (Age is not a hindrance) (r=-0.359; p=0.023), Barthel index (r=0.375; p=0.018), hand dynamometry (r=0.395; p=0.014), hand dynamometry index (r=0.340; p=0.021), lean body mass (r=0.414; p=0.009), musculoskeletal mass (r=0.819; p<0.001), proportion of musculoskeletal mass (r=0.796; p<0.001), walking speed (r=0.670; p<0.001), and the results of the sit-to-stand test (r=-0.541; p<0.001). Sarcopenia was diagnosed in 61 women (41.8%). There were also significant differences in age, hand dynamometry results, hand dynamometry index, walking speed and results of the sit-to-stand test between the two groups depending on their hand grip strength.Conclusion: The use of hand dynamometry, physical activity tests, and bioimpedance phase angle can be used in clinical practice to diagnose sarcopenia.

The demographic situation in recent decades has been characterized by a progressive increase in the proportion of older age groups in both developed countries and the Russian Federation. The main contribution to morbidity and mortality of people over 60 years of age is made by diseases of the circulatory system. Early development and progression of cardiovascular diseases contributes to kidney dysfunction, often developing against the background of morphological changes occurring with age in the kidneys, called “senile kidney”. Reduction of glomerular filtration rate in elderly patients is not mandatory and in most cases occurs as a result of an existing pathological process. The combined effect of changes in GFR and cardiovascular disease on the prognosis of older patients remains poorly understood, which determines the relevance of the study of chronic kidney disease in geriatric patients.

Hyponatremia is more common in the elderly. A number of studies suggest that even mild chronic hyponatremia is a serious danger, increasing the risks of developing geriatric syndromes, falls, low bone density, fractures, cognitive impairment, and death of all causes. Although the mechanism for the development of such complications is currently not completely clear. Questions remain about the need and methods for correcting this condition, although there is some evidence that the correction of hyponatremia improves cognitive functions, postural balance, minimizing the risk of falls and fractures. These issues are addressed in this review of the literature.

Anemic syndrome is detected in 10-25% of geriatric patients, and with increasing age, there is a tendency to increase the incidence of the disease. Among the diseases that lead to the development of anemia, kidney pathology plays an important role. Progressive deterioration of kidney function in old age is associated with an increased risk of fractures, sarcopenia, and the development of cognitive impairment. Also, nephrogenic anemia aggravates the prognosis in patients with cardiovascular diseases, which is associated with an increase in myocardial ischemia, an increase in tissue hypoxia, a progression of left ventricular hypertrophy, and a decrease in left ventricular systolic function.

Sarcopenia is an age-related loss of muscle mass, accompanied by a decrease in muscle function and/or strength, is increasingly recognized as a major risk factor for adverse outcomes in the weak elderly. The proven Association between hypodynamia, low-calorie diet, insufficient protein intake, and sarcopenia in older individuals suggests that exercise and targeted dietary supplements may have a significant therapeutic effect on the treatment and prevention of this condition. In this literature review, we summarize available data on the positive effects of various therapeutic interventions on muscle tissue.