Stress and psychological resilience in intervention and rescue activities

Nature of intervention and rescue personnel activity places them at the top of professions that face a considerable number of occupational health and safety risks. Often, this occupational category does not face a single safety risk, but a complex combination of risk factors, including unpredictability of situations in which they are required to work. Emergence of stress and other psychosocial risks in work processes requires the implementation of an anticipatory attitude and a constant level of vigilance to identify and evaluate them. In intervention and rescue, the issue of regulating and self-regulating the individual’s behaviour is essential, as exceptional acts performed in unusual conditions require adaptive mechanisms as close as possible to perfection. Developing resilience should focus on amplifying already present strengths (physical and mental characteristics and abilities), rather than managing negative effects of operational stressors. The current paper presents a theoretical approach of the concept of resilience, appliable to intervention and rescue activities and suggests several ways to develop rescuer’s resilience.

The contribution of professions to the governance of integrated care: Towards a conceptual framework based on case studies from Denmark

Objective Good governance of integrated care is key to better health care, but we know little about how professions can help make this happen. Our aim is to introduce a conceptual framework to analyse how professions contribute to the governance of integrated care, and to apply the framework to a secondary analysis of selected case studies from Denmark. Methods We developed a framework, which identified the what, how and why of the contribution professions make to the governance of integrated care. We included five qualitative Danish studies, using coordination as an indicator of integrated care. We adopted a thematic approach in our analysis, combining deductive and inductive elements. Results Health professions engage in highly diverse activities, which fall into closely connected clusters of more formal or more informal coordination. Professions apply many different adaptive mechanisms at different levels to fit coordination into local contexts. Professions are driven by interlocking rationales, where a common focus on patients connects organizational and professional concerns. Conclusions Our analytical framework emerges as a useful tool for analysis. The contribution of professions to the governance of integrated care needs greater attention in health policy implementation as it can promote more effective governance of integrated care.

ACTUAL ASPECTS OF THE DEVELOPMENT OF SOCIAL AND COMMUNICATIVE ACTIVITY OF STUDENTS

The paper considers the procedural aspects of social communication such as meeting the requirements of today’s comprehensive characteristics of social skills of the future specialist, which is manifested in his ability and ability to effectively perform professional duties adequately to each situation by activating socially and professionally important qualities in the competent application of the existing arsenal of professional knowledge, skills and abilities. The semantic elements of social communication as forms of expression of will, practical actions of an individual or a social group in a certain collective activity to achieve a socially significant result are revealed. It is established that the level of development of social and communicative skills can characterize not only the mechanisms of acquiring knowledge, skills, professionally significant qualities in the learning process, but also the peculiarities of the students’ understanding of social reality in general and in specific situations in particular, when both the adaptive mechanisms and the integrated life narratives of the individual are significantly influenced by the characteristics of the social environment. The need for coordination and focus on creating appropriate conditions for attracting external and internal resources (as a set of objectively existing conditions, means, opportunities that can be mobilized and used in the process of development of any system) to address this issue, including the intensification of participation in the development of communication skills of leading agents of influence ‒ subjects of all levels and types of education – traditional, alternative, extracurricular, “non-formal”, etc. Keywords: social communication; educational environment; communicative approach; social interaction; subjects of social communication; extracurricular activity; socialization skills; applicants of higher education.

Reconceptualization of Hormetic Responses in the Frame of Redox Toxicology

Cellular adaptive mechanisms emerging after exposure to low levels of toxic agents or stressful stimuli comprise an important biological feature that has gained considerable scientific interest. Investigations of low-dose exposures to diverse chemical compounds signify the non-linear mode of action in the exposed cell or organism at such dose levels in contrast to the classic detrimental effects induced at higher ones, a phenomenon usually referred to as hormesis. The resulting phenotype is a beneficial effect that tests our physiology within the limits of our homeostatic adaptations. Therefore, doses below the region of adverse responses are of particular interest and are specified as the hormetic gain zone. The manifestation of redox adaptations aiming to prevent from disturbances of redox homeostasis represent an area of particular interest in hormetic responses, observed after exposure not only to stressors but also to compounds of natural origin, such as phytochemicals. Findings from previous studies on several agents demonstrate the heterogeneity of the specific zone in terms of the molecular events occurring. Major factors deeply involved in these biphasic phenomena are the bioactive compound per se, the dose level, the duration of exposure, the cell, tissue or even organ exposed to and, of course, the biomarker examined. In the end, the molecular fate is a complex toxicological event, based on beneficial and detrimental effects, which, however, are poorly understood to date.

Proteomics Readjustment of the Yarrowia lipolytica Yeast in Response to Increased Temperature and Alkaline Stress

Yeasts cope with a wide range of environmental challenges using different adaptive mechanisms. They can prosper at extreme ambient pH and high temperatures; however, their adaptation mechanisms have not been entirely investigated. Previously, we showed the pivotal role and flexibility of the sugar and lipid composition of Yarrowia lipolytica W 29 upon adaptation to unfavorable conditions. In this study, we showed that extreme pH provoked significant changes in the cell wall proteins expression, with an increase in both the chaperones of heat shock protein HSP60 and some other proteins with chaperone functions. The mitochondria activity changes inducing the VDAC and malate dehydrogenase played an essential role in the adaptation, as did the altered carbohydrate metabolism, promoting its shift towards the pyruvate formation rather than gluconeogenesis. The elevated temperature led to changes in the cell wall proteins and chaperones, the induced expression of the proteins involved in the cell structural organization, ribosomal proteins, and the enzymes of formaldehyde degradation. Moreover, the readjustment of the protein composition and amount under combined stress indicated the promotion of catabolic processes related to scavenging the damaged proteins and lipids. Under all of the stress conditions studied, the process of folding, stress resistance, redox adaptation, and oxidative phosphorylation were the dominant pathways. The combined chronic alkaline and heat stress (pH 9.0, 38 °C) led to cross-adaptation, which caused “switching” over the traditional metabolism to the adaptation to the most damaging stress factor, namely the increased temperature.

Commentary to the article “Multiple hormonal and metabolic deficiency syndrome predicts outcome in heart failure: the T.O.S.CA. Registry”, Antonio Cittadini et al. Eur J Prev Cardiol. 2021

: Chronic heart failure represents a relevant concern for public health. The endocrine system is heavily involved in the induction and progression of chronic heart failure. Among endocrine dysfunction, the most relevant alterations are related to the growth hormone-insulin like growth factor 1 axis, serum testosterone, dehydroepiandrosterone sulfate, triiodothyronine levels, insulin resistance, and type 2 diabetes mellitus. It is currently debated whether these changes might be simple adaptive mechanisms or, instead, they may deteriorate myocardial pump function over time. Medical management of patients exhibiting one or more hormonal deficiencies or metabolic disorders, including insulin resistance and diabetes mellitus, may have a therapeutic role.

Mild hypobaric hypoxia influences splenic proliferation during the later phase of stress erythropoiesis

Tissue trauma and hemorrhagic shock are common battlefield injuries that can induce hypoxia, inflammation, and/or anemia. Inflammation and hypoxia can initiate adaptive mechanisms, such as stress erythropoiesis in the spleen, to produce red blood cells and restore the oxygen supply. In a military context, mild hypobaric hypoxia—part of the environmental milieu during aeromedical evacuation or en route care—may influence adaptive mechanisms, such as stress erythropoiesis, and host defense. In the present study, healthy (control), muscle trauma, and polytrauma (muscle trauma and hemorrhagic shock) mice were exposed to normobaric normoxia or hypobaric hypoxia for ∼17.5 h to test the hypothesis that hypobaric hypoxia exposure influences splenic erythropoiesis and splenic inflammation after polytrauma. This hypothesis was partially supported. The polytrauma + hypobaric hypoxia group exhibited more splenic neutrophils, fewer total spleen cells, and fewer splenic proliferating cells than the polytrauma+normobaric normoxia group; however, no splenic erythroid cell differences were detected between the two polytrauma groups. We also compared splenic erythropoiesis and myeloid cell numbers among control, muscle trauma, and polytrauma groups. More reticulocytes at 1.7 days (40 h) post-trauma (dpt) and neutrophils at 4 dpt were produced in the muscle trauma mice than corresponding control mice. In contrast to muscle trauma, polytrauma led to a reduced red blood cell count and elevated serum erythropoietin levels at 1.7 dpt. There were more erythroid subsets and apoptotic reticulocytes in the polytrauma mice than muscle trauma mice at 4 and 8 dpt. At 14 dpt, the red blood cell count of the polytrauma + normobaric normoxia mice was 12% lower than that of the control + normobaric normoxia mice; however, no difference was observed between polytrauma + hypobaric hypoxia and control + hypobaric hypoxia mice. Our findings suggest muscle trauma alone induces stress erythropoiesis; in a polytrauma model, hypobaric hypoxia exposure may result in the dysregulation of splenic cells, requiring a treatment plan to ensure adequate immune functioning.

Study on cardio-respiratory adaptive mechanisms for performance athletes with physical disabilities

Introduction.Recently, the emphasis has been on the problems faced by performance athletes with physical deficiencies of the spine. The aim of the paper is to train coaches in awareness of physical problems, especially of the spine in swimming athletes aged 10-12 years and the development of kinetic programs on land in order to correct them. Material and method. Research on the effectiveness of kinetic programs as means of correction are very numerous and, in this regard, we aim to select the most effective exercises to correct deficiencies acquired by swimmers and change the functional parameters of the cardio-respiratory system during their training. In order to highlight the need for kinetic correction programs, the coach must work in collaboration with the sports doctor and the physiotherapist in order to prevent possible deviations from normal somatic-functional values. Results and discussions. Regarding the estimation of the adaptive possibilities of the cardio-respiratory capacity, hence the need to apply a complex of tests to assess the effort capacity of athletes. Conclusions. In this sense, we will submit to the study the performance group from the University Sports Club from Suceava, and the recovery programs will take place within the Swimming and Kinesiology Complex, Suceava. Keywords: adaptive mechanisms, performance swimmers, functional physical deficiencies, kinetic means,