Search results for " STRESS"
showing 10 items of 3936 documents
Psychobiological responses at the beginning and the end of an academic year in teachers
2013
Evidence shows that work stress increases risk of cardiovascular disease. Emotional, cardiovascular and endocrine responses are affected by day-to-day experience. Perceived stress, negative mood, heart rate (HR) and blood pressure (BP) increase in working periods. Cortisol (C) response is not so clear, there being contradictory results. The main purpose is to study stress markers in two working days in teachers. Moreover, we evaluate the role of gender in stress markers in 49 school teachers. Perceived stress, mood, BP, HR, and C were measured at the beginning and at the end of an academic year. Results show that psychological and heart rate responses to a working day were different at the …
Identity configurations across love and work in emerging adults in romantic relationships
2014
Love and work constitute two life-defining identity domains for emerging adults. The present study utilized a five-dimensional identity model and examined identity configurations across these two domains, capturing the degree to which identity statuses correspond across domains. A sample of German 18–30-year-olds who were either working or studying and engaged in a romantic relationship was assessed at baseline and three years later. Six identity clusters emerged in each domain. Combining identity clusters across love and work domains, 7 identity configurations were distinguished. Whereas some configurations were characterized by strong commitments in one or both domains, other configuratio…
WELL-BEING, SOURCES OF STRESS AND COPING STRATEGIES IN A SAMPLE OF ONCOLOGISTS
2010
Background: Several studies have highlighted that some professional categories, called: ‘helping professions’, appear, more than other professions, to be subjected to sources of stress and the connected risks of burn-out. In particular personnel working in oncology face potentially stressful situations and having to deal daily with the needs and concerns of the patients and their families. It is therefore necessary to understand the variables that can limit the impact of stress. This research seeks to explore the degree of personal well-being of the oncologists interviewed, taking into consideration some possible predictors, such as the age and specific trainings (i.e. in diagnosis communic…
Positive parenting and parenting stress among working mothers in Finland, the UK and the Netherlands : Do working time patterns matter?
2017
This study explored the effects of working time patterns on positive parenting and parenting stress, and the moderating effects of working hours, the unpredictability of work schedules, and autonomy over working time in a European context. This cross-national survey study compared Finnish (n = 337), Dutch (n = 283) and British (n = 317) mothers with children under the age of 13, using structural equation modeling with a multigroup procedure. We found a connection between working time patterns and positive parenting but the nature of the connection differed between countries. In all three countries, no relationship was found between working time pattern and parenting stress, while unpredict…
Workplace bullying, burnout and resilience amongst perioperative nurses in Australia: A descriptive correlational study.
2021
AIM This study aimed to investigate workplace bullying and explore correlations between bullying, burnout and resilience amongst perioperative nurses in Australia. BACKGROUND Workplace bullying in perioperative nursing involves verbal, physical and psychological violence. However, no prior studies have measured Australian perioperative nurses' experiences of workplace bullying nor sought to understand if there is a relationship with burnout and resilience. METHODS A descriptive correlational study was conducted utilizing an online survey incorporating four validated instruments. Descriptive statistics and regression models analysed workplace bullying, burnout and resilience. RESULTS Over ha…
Oleuropein multicompartment nanovesicles enriched with collagen as a natural strategy for the treatment of skin wounds connected with oxidative stres…
2021
Aim: Collagen-enriched transfersomes, glycerosomes and glytransfersomes were specifically tailored for skin delivery of oleuropein. Methods: Vesicles were prepared by direct sonication and their main physicochemical and technological properties were measured. Biocompatibility, protective effect and promotion of the healing of a wounded cell monolayer were tested in vitro using fibroblasts. Results: Vesicles were mainly multicompartment, small (∼108 nm), slightly polydispersed (approximately 0.27) and negatively charged (~-49 mV). Oleuropein was incorporated in high amounts (approximately 87%) and vesicles were stable during four months of storage. In vitro studies confirmed the low toxicit…
Depletion ofL-arginine induces autophagy as a cytoprotective response to endoplasmic reticulum stress in human T lymphocytes
2012
PMCID: PMC3494587
Induction of mitochondrial xanthine oxidase activity during apoptosis in the rat mammary gland
2006
Oxidative stress is an important signal for apoptosis to start. So far the mitochondrial respiratory chain has been considered as the major, if not the only, cause of such stress. Here we report that this is not the case. Xanthine oxidase, a O2(-) and H2O2 generating enzyme which is important in causing significant oxidative stress in the cytosol, is also present in the mitochondrial fraction of rat mammary gland. After weaning, during the involution of the mammary gland, massive apoptosis occurs. Mitochondrial xanthine oxidase activity increases and high mitochondrial H2O2 production takes place. Inhibition of xanthine oxidase activity by allopurinol, a specific inhibitor of xanthine oxida…
Vascular oxidative stress, nitric oxide and atherosclerosis.
2014
In the vascular wall, reactive oxygen species (ROS) are produced by several enzyme systems including NADPH oxidase, xanthine oxidase, uncoupled endothelial nitric oxide synthase (eNOS) and the mitochondrial electron transport chain. On the other hand, the vasculature is protected by antioxidant enzyme systems, including superoxide dismutases, catalase, glutathione peroxidases and paraoxonases, which detoxify ROS. Cardiovascular risk factors such as hypercholesterolemia, hypertension, and diabetes mellitus enhance ROS generation, resulting in oxidative stress. This leads to oxidative modification of lipoproteins and phospholipids, mechanisms that contribute to atherogenesis. In addition, oxi…
Sildenafil protects epithelial cell through the inhibition of xanthine oxidase and the impairment of ROS production
2009
Recent reports suggest that xanthine oxidase (XO), a modified form of the native xanthine dehydrogenase enzyme, plays an important role in various forms of ischemic and vascular injuries, inflammatory diseases, and chronic heart failure. The XO inhibitors allopurinol and its oxidation product oxypurinol held considerable promises in the treatment of these conditions both in experimental animals and in human clinical trials. More recently, an endothelium-based protective effect of sildenafil, a well-known type-5 phosphodiesterase inhibitor, has been reported in preconditioning prior to ischemia/reperfusion in healthy human subjects. Based on the structural similarities between allopurinol an…