Search results for "STRESS"
showing 10 items of 6278 documents
Extraction, Characterization and Incorporation of Hypericum scruglii Extract in Ad Hoc Formulated Phospholipid Vesicles Designed for the Treatment of…
2020
An extract of Hypericum scruglii, an endangered endemic plant of Sardinia (Italy), was prepared and characterized. It was loaded in special phospholipid vesicles, glycerosomes, which were modified by adding maltodextrin (glucidex) and a polymer (gelatin or hyaluronan). The corresponding liposomes were also prepared and used as reference. The vesicles disclosed suitable physicochemical features for skin delivery. Indeed, their mean diameter ranged from 120 to 160 nm, they were homogeneously dispersed (polydispersity index &le
HOW DO FOOTBALLERS COPE WITH STRESS?
2018
Background: Stress is an inseparable attribute of sports activities. The answer to the question of how to effectively cope with stress in a competition is one of the most important challenges of sportspsychology. The aim of this research is to analyze the stress-management strategies used by football players. Methods:Participants in the study were 32 students of physical education specializing in football and 39 students of management, aged between 19 and 27 years (M = 21.41, SD = 1.76), including 24 women (34% of all respondents). Coping strategies were assessed through application of the multi-dimensional COPE inventory. Results: In comparison with the sample of management students, the g…
Impact of
2018
Drosophila melanogaster has been for over a century the model of choice of several neurobiologists to decipher the formation and development of the nervous system as well as to mirror the pathophysiological conditions of many human neurodegenerative diseases. The rare disease Friedreich’s ataxia (FRDA) is not an exception. Since the isolation of the responsible gene more than two decades ago, the analysis of the fly orthologue has proven to be an excellent avenue to understand the development and progression of the disease, to unravel pivotal mechanisms underpinning the pathology and to identify genes and molecules that might well be either disease biomarkers or promising targets for therap…
Sensitivity to acetic acid, ability to colonize abiotic surfaces and virulence potential of Listeria monocytogenes EGD-e after incubation on parsley …
2010
International audience; Abstract Aim: To investigate how the survival of Listeria monocytogenes on parsley leaves may affect its ability to sustain process-related harsh conditions and its virulence. Methods and Results: Parsley seedlings were spot inoculated with stationary phase cells of L. monocytogenes EGD-e and incubated for 15 days. Each day, bacterial cells were harvested and enumerated, and their ability to survive acetic acid challenge (90 min, pH 4.0), to colonize abiotic surfaces and to grow as biofilms was assessed. After a 3-log decrease over the first 48 h, the population stabilized to about 10(6) CFU g(-1) until the sixth day. After the sixth day, L. monocytogenes was no long…
Effects of anthropogenic stress on hosts and their microbiomes: Treated wastewater alters performance and gut microbiome of a key detritivore ( Asell…
2023
Human activity is a major driver of ecological and evolutionary change in wild populations and can have diverse effects on eukaryotic organisms as well as on environmental and host-associated microbial communities. Although host-microbiome interactions can be a major determinant of host fitness, few studies consider the joint responses of hosts and their microbiomes to anthropogenic changes. In freshwater ecosystems, wastewater is a widespread anthropogenic stressor that represents a multifarious environmental perturbation. Here, we experimentally tested the impact of treated wastewater on a keystone host (the freshwater isopod Asellus aquaticus) and its gut microbiome. We used a semi-natur…
Manipulating Individual Decisions and Environmental Conditions Reveal Individual Quality in Decision-Making and Non-Lethal Costs of Predation Risk
2012
Habitat selection is a crucial decision for any organism. Selecting a high quality site will positively impact survival and reproductive output. Predation risk is an important component of habitat quality that is known to impact reproductive success and individual condition. However, separating the breeding consequences of decision-making of wild animals from individual quality is difficult. Individuals face reproductive decisions that often vary with quality such that low quality individuals invest less. This reduced reproductive performance could appear a cost of increased risk but may simply reflect lower quality. Thus, teasing apart the effects of individual quality and the effect of pr…
Evaluation of presumptive biomarkers of oxidative stress, immune response and apoptosis in primary open-angle glaucoma.
2013
There is growing interest on the correlation among oxidative stress, inflammation, apoptosis and primary open-angle glaucoma initiation and progression. Reactive oxygen species are formed in the eyes following a wide variety of stressors, and are largely implicated in glaucoma pathogenesis. Immune-inflammatory response mediators have recently become a target of ophthalmologic concern, including glaucoma. Much attention has been derived to the role of specific pro and anti-apoptotic molecules in glaucoma. This article reviews the early evidence suggesting that reactive oxygen species, immune inflammatory response mediators, and apoptogenic molecules are engaged in glaucoma disease. Moreover,…
Malestar emocional y percepción de amenaza en familiares de personas afectadas por COVID-19
2021
Los familiares de personas afectadas por la COVID-19 pudieron experimentar mayor impacto emocional durante el confinamiento, más aún si se tenía una imagen muy amenazante del COVID-19. El objetivo fue analizar la relación entre la psicopatología y la percepción de amenaza en familiares de personas afectadas por COVID-19. Participaron 50 familiares de personas afectadas por COVID-19 (84% mujeres), de entre 20 y 63 años (M=36,88; DT=12,73). Se evaluó la psicopatología (SCL-90-R; Derogatis, Lipman y Covi, 1973) y la percepción de amenaza del COVID (BIP-Q5; Pérez-Fuentes, Molero, Oropesa et al., 2020). Observamos una afectación emocional y una percepción de amenaza moderadas. Quienes tenían enf…
The mechanisms of the action of omega-3s in the retina
2013
Age-related Macular Degeneration (AMD) is the leading cause of visual loss in Western countries after the age of 50y. Based on large-scale epidemiologic studies, it appears now as evident that omega-3 polyunsaturated fatty acids (PUFAs) provide benefits in preventing both, early and late stages of AMD. The aim of this paper is to summarize the knowledge about the biological mechanisms by which omega-3 PUFAs may be protective for the retina. The content of this presentation will range from biochemical data about the occurrence of omega-3 PUFAs in retinal cell membranes to results from cellular and animal studies showing that omega-3 PUFAs can influence processes involved in signal transducti…
In vitro evaluation of toxic effects, bioavailability and bioaccesibility of beauvericin, enniatins and fusaproliferin = Evaluación in vitro de los e…
2013
Los hongos de Fusarium pueden producir micotoxinas hexadepsipeptidicas, como beauvericina (BEA) y eniatinas (ENs) e isoprenoides como la fusaproliferina (FUS), las cuales se encuentran de forma natural en los alimentos y piensos. En las últimas décadas se han publicado datos, aunque escasos, sobre su toxicidad potencial en humanos y animales. Los objectivos de esta tesis fueron evaluar: los efectos citotóxicos de las FUS, BEA y ENs A, A1, B y B1 en células Caco-2, CHO-K1 y HT-29; los efectos citotóxicos de las ENs combinadas, la generación de especies reactivas de oxígeno (ROS) y la producción de peroxidación lipídica (LPO) tras exposición a FUS, BEA y ENs en las células Caco-2; la citoprot…