adaptation to stress
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OBJECTIVES: This study aims to explore the lasting effects of stress experienced by pregnant women during World War II (WWII) on body and head measurements of their adult daughters. METHODS: The research sample consists of 336 female university students born in Poland between 1925 and 1951. The data include body measurements and socioeconomic information (parental occupation and number of siblings) acquired from questionnaires collected between the 1950s and 1970s. Student's t-test, Mann-Whitney test and Analysis of Variance were used to analyze differences in body measurements between groups of women born before and during the war, as well as the possible influences of socioeconomic variables. RESULTS: The mean measurements of body height, symphysion height, and waist circumference were lower in women conceived and born during the war compared to those born in the pre-war period. In contrast, the mean measurements of biacromial (shoulder) width, trunk length, and three head dimensions were higher in women conceived and born during the war. Additionally, the number of siblings appeared to be a significant factor that may have influenced the body measurements of women in both groups. For instance, a higher number of living siblings, particularly sisters, was associated with reduced body dimensions, such as body height and waist circumference, while a greater number of deceased siblings was linked to an increase in certain body dimensions. CONCLUSION: The results suggest that war-related prenatal conditions may have influenced the postnatal growth and development of women conceived and born during the war. Notably, the direction of these changes varied, which indicates that the growth response to the war-related conditions was a complex adaptation, reflecting both positive and negative changes in different body parts, rather than a uniform pattern of growth suppression.
- MeSH
- 2. světová válka * MeSH
- dospělí MeSH
- lidé MeSH
- mladý dospělý MeSH
- psychický stres MeSH
- socioekonomické faktory MeSH
- těhotenství MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mladý dospělý MeSH
- těhotenství MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Polsko MeSH
A Mycobacterium smegmatis transcriptional regulator, MSMEG_5850, and its ortholog in M. tuberculosis, rv0775 were annotated as putative TetR Family Transcriptional Regulators. Our previous study revealed MSMEG_5850 is involved in global transcriptional regulation in M. smegmatis and the presence of gene product supported the survival of bacteria during nutritional starvation. Phylogenetic analysis showed that MSMEG_5850 diverged early in comparison to its counterparts in virulent strains. Therefore, the expression pattern of MSMEG_5850 and its counterpart, rv0775, was compared during various in-vitro growth and stress conditions. Expression of MSMEG_5850 was induced under different environmental stresses while no change in expression was observed under mid-exponential and stationary phases. No expression of rv0775 was observed under any stress condition tested, while the gene was expressed during the mid-exponential phase that declined in the stationary phase. The effect of MSMEG_5850 on the survival of M. smegmatis under stress conditions and growth pattern was studied using wild type, knockout, and supplemented strain. Deletion of MSMEG_5850 resulted in altered colony morphology, biofilm/pellicle formation, and growth pattern of M. smegmatis. The survival rate of wild-type MSMEG_5850 was higher in comparison to knockout under different environmental stresses. Overall, this study suggested the role of MSMEG_5850 in the growth and adaptation/survival of M. smegmatis under stress conditions.
- MeSH
- bakteriální proteiny * genetika metabolismus MeSH
- biofilmy růst a vývoj MeSH
- fylogeneze MeSH
- fyziologický stres * MeSH
- mikrobiální viabilita MeSH
- Mycobacterium smegmatis * genetika růst a vývoj fyziologie metabolismus MeSH
- regulace genové exprese u bakterií MeSH
- transkripční faktory * genetika metabolismus MeSH
- Publikační typ
- časopisecké články MeSH
Good brain health plays a significant role in an individual's well-being and profoundly impacts the collective economy and society. Brain development does not stop at birth, and some aspects continue throughout childhood and adolescence, allowing the full development of cognitive functions. Different determinants related to physical health, healthy environments, safety and security, life-long learning and social connection as well as access to quality services influence the way our brains develop, adapt and respond to stress and adversity. Ongoing progress in neurobiology and cognitive neuroscience allows the design of better prevention and intervention strategies to help avoid brain deficits and/or limit their impact and maintain brain health. The European Brain Council (EBC) convened an expert meeting during the Federation of European Neuroscience Societies (FENS) Forum 2024 to address youth brain health challenges. In recent years, the importance of brain health has garnered significant attention across scientific, medical and policy-making communities. Although much focus has traditionally been on neurodegenerative conditions affecting the elderly, a paradigm shift towards prioritizing brain health in youth is both timely and necessary. This shift can profoundly impact individual lives and society, necessitating an interdisciplinary approach that brings neuroscience to the forefront of public health and informs evidence-based policy. The topic is of utmost importance as EBC launched this year a new campaign on No Health Without Brain Health rallying support with its member organizations and the wider brain community for the increased prioritization of brain health on EU health and research agendas.
Úzkostné poruchy jsou v současnosti nejčetnější skupinou duševních poruch, postihují světově více než 300 milionů lidí. Rozpočty směřující na léčení a prevenci těchto poruch jsou velmi omezené. Článek se zaměřuje na soucit se sebou, který je dostupným přístupem snižování úzkostných příznaků i potenciálního léčení úzkostných poruch. Uvedený text se opírá zejména o teorii tří systémů regulace emocí, doplněnou o rešerši studií zaměřujících se na vztah mezi soucitem se sebou, úzkostnými příznaky, citovou vazbou a oxytocinem. Pro budoucí rozvoj tohoto oboru je zapotřebí více randomizovaných kontrolovaných longitudinálních studií a komplexnějších výzkumných modelů, zkoumajících zejména roli mediačních/moderačních faktorů, jako je citová vazba či emoční regulace. Autoři v oboru by také měli zvážit adaptování a validaci většího množství intervencí v rámci klinické populace. Významný potenciál budoucího výzkumu lze spatřit ve zkoumání role oxytocinu, který dle některých studií vykazuje příznivé efekty pro snižování úzkostí. V poslední části jsou prezentována doporučení pro podporu praxe pracovníků v oblasti duševního zdraví.
Anxiety disorders are currently the most common group of mental disorders, affecting more than 300 million people worldwide. Budgets for the treatment and prevention of these disorders are very limited. The article focuses on self-compassion, which is an available approach to reducing anxiety symptoms as well as potentially treating anxiety disorders. The above text is mainly based on the theory of three systems of emotion regulation, as well as studies focusing on the relationship between self-compassion, anxiety symptoms, emotional attachment and oxytocin. Based on this, recommendations for future studies are presented. For the future development of this field, more randomized controlled longitudinal studies and more complex research models are needed, especially investigating the role of mediating/moderating factors such as emotional attachment, personality characteristics or emotional regulation. Authors in the field should also consider adapting and validating more interventions within a clinical population. Significant potential for future research can be seen in examining the role of oxytocin, which according to some studies shows beneficial effects for reducing anxiety. In the last part, recommendations for supporting the practice of mental health workers are presented.
Cíl: Popsat strategie zvládání stresu (coping) a prožívaný stres v souvislosti s neplodností u mužů a žen podstupujících léčbu in vitro fertilizace (IVF). Zjistit, zda jsou mezi ženami a muži rozdíly v prožívání a zároveň vytipovat adaptivní a neadaptivní strategie pro zvládání neplodnosti. Soubor a metoda: Korelační studie, 162 pacientů s primární neplodností (99 žen a 63 mužů), kteří podstupovali léčbu IVF v Sanus Pardubice, vyplnilo psychologické dotazníky Fertility Problem Inventory a COPE Inventory. Výsledky: Mezi muži a ženami nebyl nalezen statisticky významný rozdíl v míře prožívaného stresu. Nejčastěji užívali muži i ženy copingové strategie pozitivní reinterpretace, plánování a akceptace, muži užívali signifikantně častěji než ženy strategii zdrženlivost, potlačení a plánování, ženy užívaly signifikantně častěji než muži strategie využívání emoční sociální opory a náboženský coping. U žen i mužů signifikantně korelovala s celkovou mírou prožívaného stresu strategie popření v pozitivním směru, strategie pozitivní reinterpretace a akceptace v negativním směru. Závěr: Nedobrovolně bezdětné ženy a muži v léčbě IVF prožívají podobný stres, užívají ale mírně odlišné copingové strategie. Pro muže i ženy se jako adaptivní copingové strategie ukazují pozitivní reinterpretace a akceptace, jako neadaptivní popření.
Aim: To describe coping strategies and infertility stress in men and women undergoing in vitro fertilization (IVF) treatment. To determine whether there are differences in coping strategies between men and women and to identify adaptive and non-adaptive coping strategies for infertility. Materials and methods: A correlational study, where 162 patients (99 women and 63 men) with primary infertility undergoing IVF treatment at Sanus Pardubice completed the Fertility Problem Inventory and COPE Inventory psychological questionnaires. Results: There were no significant differences between women and men in experiencing infertility stress. The coping strategies used most frequently by both men and women were Positive Reinterpretation, Planning, and Acceptance; men used the strategies Restraint, Suppression, and Planning significantly more frequently than women; and women used the strategies Using Emotional Social Support and Religious Coping significantly more frequently than men. For both women and men, level of Global infertility stress significantly correlated with Denial in the positive direction and with Positive Reinterpretation and Acceptance in the negative direction. Conclusion: Involuntarily childless women and men in IVF treatment experience similar infertility stress, but use slightly different coping strategies. For both men and women, Positive Reinterpretation and Acceptance emerged as adaptive strategies, while Denial emerged as non-adaptive.
The current understanding of lipid droplets (LDs) in cell biology has evolved from being viewed merely as storage compartments. LDs are now recognized as metabolic hubs that act as cytosolic buffers against the detrimental effects of free fatty acids (FAs). Upon activation, FAs traverse various cellular pathways, including oxidation in mitochondria, integration into complex lipids, or storage in triacylglycerols (TGs). Maintaining a balance among these processes is crucial in cellular FA trafficking, and under metabolically challenging circumstances the routes of FA metabolism adapt to meet the current cellular needs. This typically involves an increased demand for anabolic intermediates or energy and the prevention of redox stress. Surprisingly, LDs accumulate under certain conditions such as amino acid starvation. This review explores the biochemical aspects of FA utilization in both physiological contexts and within cancer cells, focusing on the metabolism of TGs, cholesteryl esters (CEs), and mitochondrial FA oxidation. Emphasis is placed on the potential toxicity associated with non-esterified FAs in cytosolic and mitochondrial compartments. Additionally, we discuss mechanisms that lead to increased LD biogenesis due to an inhibited mitochondrial import of FAs.
ABSTRACTBackground: European health care workers recently experienced serious challenges to their mental health. Following the extremely stressful experience of the COVID-19 pandemic, the war in Ukraine caused a humanitarian influx of refugees in need of social and healthcare. We aimed to explore: (1) how working with refugees has affected the mental well-being of health care workers in the context of the COVID-19 pandemic, and (2) the nature of health care workers' emotional strain related to the refugee situation and the war in Ukraine.Methods: We used a combination of quantitative regression analyses and qualitative content analysis to assess data collected by an online questionnaire in 2022. The study included 1121 health care workers from the Czech arm of the international HEROES Study.Results: Quantitative findings did not indicate that working with Ukrainian refugees was reliably associated with a greater occurrence of symptoms of depression, anxiety, distress, or burnout. Qualitative analysis revealed five categories of emotional strain: impacts on working conditions, emotional reactions to refugees and the war, comparisons with the COVID-19 pandemic, and coping strategies.Conclusions: This study highlights the resilience of health care workers but also points to the need for ongoing support to address the complex emotional challenges they face during health crises.
- MeSH
- adaptace psychologická MeSH
- COVID-19 * psychologie MeSH
- deprese psychologie epidemiologie MeSH
- dospělí MeSH
- duševní zdraví * MeSH
- lidé středního věku MeSH
- lidé MeSH
- pandemie MeSH
- profesionální vyhoření psychologie MeSH
- průzkumy a dotazníky MeSH
- psychický stres psychologie MeSH
- SARS-CoV-2 MeSH
- uprchlíci * psychologie statistika a číselné údaje MeSH
- úzkost psychologie MeSH
- zdravotnický personál * psychologie statistika a číselné údaje MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
- Ukrajina MeSH
BACKGROUND: Marathon training and running have many beneficial effects on human health and physical fitness; however, they also pose risks. To date, no comprehensive review regarding both the benefits and risks of marathon running on different organ systems has been published. MAIN BODY: The aim of this review was to provide a comprehensive review of the benefits and risks of marathon training and racing on different organ systems. A predefined search strategy including keywords (e.g., marathon, cardiovascular system, etc.) and free text search was used. Articles covering running regardless of sex, age, performance level, and event type (e.g., road races, mountain marathons) were considered, whereas articles examining only cycling, triathlon, stress-tests or other sports were excluded. In total, we found 1021 articles in PubMed, Scopus, and Google Scholar, of which 329 studies were included in this review. Overall, marathon training offers several benefits for different organ systems and reduces all-cause mortality. As such, it improves cardiovascular risk factors, leads to favorable cardiac adaptations, enhances lung function, and improves quality of life in chronic kidney disease patients. It also enhances gastrointestinal mobility and reduces the risk of specific tumors such as colorectal cancer and hepatocellular carcinoma. Marathon training enhances bone health and skeletal muscle metabolism. It further positively affects hematopoiesis and cytotoxic abilities of natural killer cells, and may act neuroprotective on a long-term basis. After a marathon, changes in biomarkers suggesting pathological events in certain organ systems such as cardiovascular, renal, gastrointestinal, liver, hematological, immune, musculoskeletal, central nervous, and endocrine systems can often be observed. Mostly, these changes are limited to 1-3 days post-race and usually normalize within a week. Moreover, marathon running poses the risk of serious adverse events such as sudden cardiac death or acute liver failure. Concerning lung function, a decrease after a marathon race was observed. Acute kidney injury, as well as electrolyte imbalances, are relatively common amongst marathon finishers. Many runners complain of gastrointestinal symptoms during or after long-distance running. Many runners suffer from running-related musculoskeletal injuries often impairing performance. A marathon is often accompanied by an acute inflammatory response with transient immunosuppression, making runners susceptible to infections. Also, hormonal alterations such as increased cortisol levels or decreased testosterone levels immediately after a race are observed. Disturbances in sleep patterns are commonly found in marathon runners leading up to or directly after the race. CONCLUSION: All in all, marathon training is generally safe for human health and individual organ systems. Considering the high popularity of marathon running, these findings supply athletes, coaches, sports scientists, and sports medicine practitioners with practical applications. Further large-scale studies examining long-term effects on the cardiovascular, renal, and other system are needed.
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
Protein synthesis (translation) consumes a substantial proportion of cellular resources, prompting specialized mechanisms to reduce translation under adverse conditions. Ribosome inactivation often involves ribosome-interacting proteins. In both bacteria and eukaryotes, various ribosome-interacting proteins facilitate ribosome dimerization or hibernation, and/or prevent ribosomal subunits from associating, enabling the organisms to adapt to stress. Despite extensive studies on bacteria and eukaryotes, understanding factor-mediated ribosome dimerization or anti-association in archaea remains elusive. Here, we present cryo-electron microscopy structures of an archaeal 30S dimer complexed with an archaeal ribosome dimerization factor (designated aRDF), from Pyrococcus furiosus, resolved at a resolution of 3.2 Å. The complex features two 30S subunits stabilized by aRDF homodimers in a unique head-to-body architecture, which differs from the disome architecture observed during hibernation in bacteria and eukaryotes. aRDF interacts directly with eS32 ribosomal protein, which is essential for subunit association. The binding mode of aRDF elucidates its anti-association properties, which prevent the assembly of archaeal 70S ribosomes.
- MeSH
- archeální proteiny * chemie metabolismus ultrastruktura MeSH
- dimerizace MeSH
- elektronová kryomikroskopie * MeSH
- malé podjednotky ribozomu archebakteriální chemie metabolismus MeSH
- molekulární modely MeSH
- multimerizace proteinu MeSH
- Pyrococcus furiosus * metabolismus MeSH
- ribozomální proteiny * chemie metabolismus MeSH
- ribozomy metabolismus ultrastruktura chemie MeSH
- vazba proteinů MeSH
- Publikační typ
- časopisecké články MeSH
Daunomycin is a chemotherapeutic agent widely used for the treatment of leukemia, but its toxicity toward healthy dividing cells limits its clinical use and its production by fermentation. Herein, we describe the development of a specialized cultivation medium for daunomycin production, including a shift to oil rather than sugar as the primary carbon source. This achieved an almost threefold increase in daunomycin yields, reaching 5.5-6.0 g/L. Daunomycin produced in the oil-based medium was predominantly found in the solid sediment, whereas that produced in the sugar-based medium was mostly soluble. The oil-based medium thus induces an autonomous daunomycin-resistance mechanism involving biogenic nanoparticle formation. The characterization of the nanoparticles confirmed the incorporation of iron and daunomycin, indicating that this approach has the potential to mitigate cytotoxicity while improving yields. The presence of proteins associated with iron homeostasis and oxidative stress responses revealed the ability of the production strain to adapt to high iron concentrations. Our findings provide insight into the mechanisms of biogenic nanoparticle formation and the optimization of cultivation processes. Further investigation will help to refine microbial production systems for daunomycin and also broaden the application of similar strategies for the synthesis of other therapeutically important compounds.
- Publikační typ
- časopisecké články MeSH
