Different Types Of Stress Research Articles

Exploring the Relationship Between Work Stress and Work-related Rumination.

Current studies lack adequate analysis of the antecedents of the two forms of work-related rumination. However, understanding the relationship between different types of stress and the two forms of rumination is of profound significance for eliminating the influence of negative rumination. In this project, three studies were conducted to investigate the cumulative and immediate effects of challenge and hindrance stress on affective rumination and problem-solving rumination based on one-time, two-time points and daily measurements. Participants were 1109, 605 and 111 employees from a variety of jobs in Chinese mainland. The results showed the relationship between hindrance stress and affective rumination varies over different time course. There was no significant correlation between hindrance stress and problem-solving rumination over any time course. The relationship between challenge stress and two forms of work-related rumination varies over different time course. The results of this study suggest that the antecedent analysis of work-related rumination should not only give attention to the type of work stress, but also consider the time of work stress when analyzing its aftereffects.

Association Between Stress and Parafunctional Habits Among Undergraduate Healthcare Students of Pakistan

Objective: Stress is a feeling of mental pressure and tension which leads to parafunctional habits increasing the risk of developing temporomandibular disorders. The purpose of this study was to assess the association between parafunctional habits as well as stress in undergraduate medical and dental students. Study Design And Setting: This cross-sectional study was carried out from April 01, 2020, to October 31, 2021, amongst the students of different medical and dental colleges, both in the private and public sectors in Punjab, Sindh, and the Federal areas in Pakistan. Methodology: The study comprised 466 students between 18 to 25 years. A self-compiled and validated questionnaire was shared with students belonging to various years of different medical and dental colleges. Response from all the forms was analyzed using SPSS Version 20 and the relationship between stress and parafunctional habits was assessed. Results: Results indicated that the stress of studies was the most common stress among students (75.1%, n = 350) while the most common parafunctional habit was lip biting (30%, n = 140). The association between different types of stresses and parafunctional habits was seen to be significantly related to one another. Conclusion: A significant relationship between parafunctional habits and stress was seen in undergraduate medical and dental students

Cloning and comparative modeling identifies a highly stress tolerant Cu/Zn cytosolic super oxide dismutase 2 from a drought tolerant maize inbred line.

Plants have a complex system of stress response that deals with different types of stresses. Maize (Zea mays L.), one of the most important crops grown throughout the world, across a range of agro-ecological environments, employs complex mechanisms of gene regulation in response to drought stress. HKI 335 is a tropical maize inbred line showing remarkable adaptation to drought stress. Abiotic stresses, like drought, trigger the production of reactive oxygen species (ROS) due to the incomplete reduction or excitation of molecular oxygen, eventually leading to cell damage. Superoxide dismutase (SOD, EC 1.15.1.1) is a metalloenzyme that acts as the first line of defense against ROS. We cloned the Sod2 gene from HKI 335 inbred line and analyzed its protein through detailed in silico characterization. Our comparative modeling revealed that at the level of tertiary structure, the HKI 335 SOD2 protein is highly similar to Potentilla atrosanguinea SOD2, which had been previously identified as highly thermostable SOD that can tolerate autoclaving as well as sub-zero temperatures. We performed phylogenetic analysis, estimated physicochemical properties, post-translational modifications, protein-protein interactions, and domain composition of this SOD2. The phylogenetic analysis showed that orthologous sequences of SOD from different species were clustered into two clusters. Secondary structure prediction indicates that SOD2 is a soluble protein and no transmembrane domains have been found. Most of the beta sheets have RSA value greater than 2. The Ramachandran plot from PDBsum revealed that most of the residues fall in the highly favored region. It was estimated that the value of the instability index was less than 40, the value of the aliphatic index was extremely high and the GRAVY value lies between -2 and +2. We could identify only one phosphorylation site, located at position 20 with a score of 0.692. Overall, the unique stress-tolerant properties of the HKI 335 SOD2, may be one of the reasons contributing to the high drought tolerance trait exhibited by HKI 335 maize inbred line. Further research may reveal more insights into the drought adaptation mechanism in maize and the eventual deployment of the trait in maize hybrids.

Cytoplasmic contractile injection systems mediate cell death in Streptomyces

Contractile injection systems (CIS) are bacteriophage tail-like structures that mediate bacterial cell–cell interactions. While CIS are highly abundant across diverse bacterial phyla, representative gene clusters in Gram-positive organisms remain poorly studied. Here we characterize a CIS in the Gram-positive multicellular model organism Streptomyces coelicolor and show that, in contrast to most other CIS, S. coelicolor CIS (CISSc) mediate cell death in response to stress and impact cellular development. CISSc are expressed in the cytoplasm of vegetative hyphae and are not released into the medium. Our cryo-electron microscopy structure enabled the engineering of non-contractile and fluorescently tagged CISSc assemblies. Cryo-electron tomography showed that CISSc contraction is linked to reduced cellular integrity. Fluorescence light microscopy furthermore revealed that functional CISSc mediate cell death upon encountering different types of stress. The absence of functional CISSc had an impact on hyphal differentiation and secondary metabolite production. Finally, we identified three putative effector proteins, which when absent, phenocopied other CISSc mutants. Our results provide new functional insights into CIS in Gram-positive organisms and a framework for studying novel intracellular roles, including regulated cell death and life-cycle progression in multicellular bacteria.

Genetic Improvement to Obtain Specialized Haematococcus pluvialis Genotypes for the Production of Carotenoids, with Particular Reference to Astaxanthin

Nowadays, the search for natural substances with a high nutraceutical effect positively impact the world market. Among the most attractive macromolecules are antioxidants, capable of preventing the development of various pathologies. Astaxanthin (ASX) is antioxidant molecule produced by the microalga H. pluvialis as a response to different types of stress. Usually, astaxanthin production involves the first phase of accumulation of the biomass of H. pluvialis (green phase), which is then stressed to stimulate the biosynthesis and accumulation of ASX (red phase). In this study, the H. pluvialis wild-type strain was subjected to random mutagenesis by UV. Among the different mutant strains obtained, only two showed interesting bio-functional characteristics, such as a good growth rate. The results demonstrated that the HM1010 mutant not only has a higher growth trend than the WT mutant but accumulates and produces ASX even in the green phase. This innovative genotype would guarantee the continuous production of ASX, not linked to the two-step process and the uniqueness of the product obtained.

Multicluster Fractures Propagation during Temporary Plugging Fracturing in Naturally Fractured Reservoirs Integrated with Dynamic Perforation Erosion

Summary Temporary plugging technology has been widely applied in multicluster fracturing for the uniform growth of multiple fractures. To investigate the propagation behavior of multiple fractures and explore a better fracturing scheme during temporary plugging fracturing, a 2D finite element method (FEM)-discrete fracture network (DFN) model is established. An improved traction-separation law is used to describe the constitutive behavior of fractures under different types of stress. The model is further integrated with the perforation pressure drop model, considering the dynamic perforation erosion effect to simulate the fracture geometry more accurately. Based on the model, the impact of the perforation erosion effect on the propagation of multicluster fractures in the naturally fractured reservoir is quantitatively evaluated first. The result showed that the effect can intensify the nonuniformity among multicluster fractures, especially under the condition of small cluster spacing. Then, the simulation for temporary plugging fracturing is carried out under different cluster spacings. Finally, the plugging time optimization in temporary plugging fracturing is explored. The model and results presented in this paper can provide new insight into the impact of the perforation erosion effect and exploration for plugging time optimization in temporary plugging fracturing.

A comparative study of stress experienced by Swedish and Norwegian police officers.

Police officers work in a variable environment under different circumstances and often involves stressful situations. This include working irregular hours, ongoing exposure to critical incidents, confrontations and violence. community police officers are mainly out in the society and have daily contact with the general public. critical incidents can also consist of being criticized and stigmatized as a police officer, both from the public but also lack of support from their own organization. There is evidence on negative impacts of stress on police officers. However, knowledge about the nature of police stress and its various types is insufficient. It is assumed that there are common stress factors which are universal among all police officers in different contexts but there is a lack of comparative studies to provide empirical evidence. The aim of this study is to compare different types of stress among police officers in Norway and Sweden and how the pattern of experiencing stress has changed over time in these countries. The study population consisted of patrolling police officers from 20 local police districts or units in all seven regions in Sweden (n = 953) and patrolling police officers from four police districts in Norway (n = 678). A 42-item Police Stress Identification Questionnaire was used to measure the stress level. The findings show differences in types of stressful events as well as its severity among police officers in Sweden and Norway. The level of stress decreased over time among Swedish police officers whereas it showed no change or even an increase among the Norwegian participants. The results of this study are relevant for policy-makers, police authorities and lay police officers in each country to tailor their efforts to prevent stress among police officers.

Selenium Biofortification: Strategies, Progress and Challenges

Selenium (Se) is an essential trace element for humans and animals. Its necessity for plants is still under examination. Due to the contradictory nature of Se and its significance, it has received much interest in recent years. Se deficiency can be harmful to humans, yet almost a billion people are deficient. Its deficiency has been associated with cancers, impairment of organs, and a number of other ailments. The biofortification of plants and livestock is a guaranteed practice to increase human selenium consumption. Strategies such as foliar spraying, the direct application of Se in plants and Se feed, and injections in livestock have been employed. Se biofortification has been shown to have additional beneficial effects in plants and livestock. In plants, it has been reported to mitigate different types of stress and increase yield. In animal biofortification, Se has been shown to reduce the detrimental effects of ailments and promote healthy growth. Se biofortification, nevertheless, confronts a number of difficulties. For instance, the bulk of biofortified products must be prepared before consumption, lowering the Se concentration. The objective of this review is to convey the current understanding of the Se biofortification of plants and animals, as well as its difficulties, taking into account both the detrimental consequences of Se deficiency and benefits of Se biofortification.

A disaster's disparate impacts: analysing perceived stress and personal resilience across gender and race.

This research sought to identify differences in perceived stress and personal resilience across gender, race, and different types of stressors (such as rent or mortgage stress) among a sample of United States residents experiencing the COVID-19 pandemic. It used a cross-sectional, convenience sampling design for primary survey data collected over 10 weeks starting in April 2020 (n=374). Independent t-tests and binary logistic regression were performed to determine statistically significant differences between gender and race for perceived stress and personal resilience and to pinpoint key contributing factors. Results indicate women exhibited higher levels of stress, with non-IPV (intimate partner violence) reporting women evidencing higher levels of resilience than IPV reporting women. Racial minority women were more likely to experience nutritional stress, whereas White women were more likely to worry about rent or mortgage stress. These findings provide insight into disparate impacts across vulnerable populations at the start of a crisis with implications for improving pre- and post-disaster interventions.

Coaggregative interactions between rhizobacteria are promoted by exopolysaccharides from Sinorhizobium meliloti.

Bacterial surface components and extracellular compounds such as exopolysaccharides (EPSs) are crucial for interactions between cells, tolerance to different types of stress, and host colonization. Sinorhizobium meliloti produces two EPSs: Succinoglycan (EPS I), which is involved in the establishment of symbiosis with Medicago sativa, and galactoglucan (EPS II), associated with biofilm formation and the promotion of aggregation. Here, we aimed to assess their role in aggregative interactions between cells of the same strain of a given species (auto-aggregation), and between genetically different strains of the same or different species (intra- or intergeneric coaggregation). To do this, we used S. meliloti mutants which are defective in the production of EPS I, EPS II, or both. Macroscopic and microscopic coaggregation tests were performed with combinations or pairs of different bacterial strains. The EPS II-producing strains were more capable of coaggregation than those that cannot produce EPS II. This was true both for coaggregations between different S. meliloti strains, and between S. meliloti and other common rhizobacteria of agricultural relevance, such as Pseudomonas fluorescens and Azospirillum brasilense. The exogenous addition of EPS II strongly promoted coaggregation, thus confirming the polymer's importance for this phenotype. EPS II may therefore be a key factor in events of physiological significance for environmental survival, such as aggregative interactions and biofilm development. Furthermore, it might be a connecting molecule with relevant properties at an ecological, biotechnological, and agricultural level.

Recent Advances in the Bacterial Phytohormone Modulation of Plant Growth.

Phytohormones are regulators of plant growth and development, which under different types of stress can play a fundamental role in a plant's adaptation and survival. Some of these phytohormones such as cytokinin, gibberellin, salicylic acid, auxin, and ethylene are also produced by plant growth-promoting bacteria (PGPB). In addition, numerous volatile organic compounds are released by PGPB and, like bacterial phytohormones, modulate plant physiology and genetics. In the present work we review the basic functions of these bacterial phytohormones during their interaction with different plant species. Moreover, we discuss the most recent advances of the beneficial effects on plant growth of the phytohormones produced by PGPB. Finally, we review some aspects of the cross-link between phytohormone production and other plant growth promotion (PGP) mechanisms. This work highlights the most recent advances in the essential functions performed by bacterial phytohormones and their potential application in agricultural production.

Natural Bioactive Molecules as Neuromedicines for the Treatment/Prevention of Neurodegenerative Diseases.

The brain is vulnerable to different types of stresses, particularly oxidative stress as a result of oxygen requirements/utilization in the body. Large amounts of unsaturated fatty acids present in the brain increase this vulnerability. Neurodegenerative diseases (NDDs) are brain disorders that are characterized by the gradual loss of specific neurons and are attributed to broad evidence of cell-level oxidative stress. The accurate characterization of neurological disorders relies on several parameters along with genetics and environmental risk factors, making therapies less efficient to fight NDDs. On the way to tackle oxidative damage and discover efficient and safe therapies, bioactives are at the edge of NDD science. Naturally occurring bioactive compounds such as polyphenols, carotenoids, essential fatty acids, phytosterols, essential oils, etc. are particularly of interest owing to their potent antioxidant and anti-inflammatory activities, and they offer lots of brain-health-promoting features. This Review focuses on probing the neuroefficacy and bioefficacy of bioactives and their role in supporting relatively low antioxidative and low regenerative capacities of the brain, neurogenesis, neuroprotection, and ameliorating/treating NDDs.

Students stress patterns in a Kenyan socio-cultural and economic context: toward a public health intervention

This study aimed at determining the prevalence of stress, different types of stress, their severity and their determinants in Kenyan university, college and high school students. The following tools were administered to 9741 students: (1) Researcher-designed socio-demographic tool, (2) Psychiatric Diagnostic Screening Questionnaire (PDSQ) for psychiatric disorders, (3) WERC Stress Screen for stress, (4) Washington Early Recognition Center Affectivity and Psychosis (WERCAP) screen for psychosis and affectivity, (5) Wealth Index Questionnaire for economic indicators. Descriptive analysis for the prevalence of different types of stress and inferential analysis for stress and independent variables were done. Significant variables (p < 0.05) were fitted into generalized linear model to determine independent predictors. The mean age of the respondents was 21.4 years (range 16–43). Money issues were the commonest stressors while alcohol and drug use were the least. The independent predictors of stress were females, college students and use of gas stove. In conclusion, up to 30% of the students suffer from mild to severe stress. The students experience a wide range of stressors. The most important stressors include money and finances, family related problems and concerns about their future. Our findings suggest a public health approach to create stress awareness in students.

Role and Regulation of Clp Proteases: A Target against Gram-Positive Bacteria

Bacterial proteases participate in the proteolytic elimination of misfolded or aggregated proteins, carried out by members of the AAA+ protein superfamily such as Hsp100/Clp, Lon, and FtsH. It is estimated that the Clp and Lon families perform around 80% of cellular proteolysis in bacteria. These functions are regulated, in part, through the spatial and/or temporal use of adapter proteins, which participate in the recognition and delivery of specific substrate proteins to proteases. The proteolysis plays an important role in maintaining and controlling the quality of the proteins, avoiding the accumulation and aggregation of unfolded or truncated proteins. However, this is not their only function, since they play an important role in the formation of virulent phenotypes and in the response to different types of stress faced when entering the host or that occur in the environment. This review summarizes the structural and functional aspects of the Clp proteases and their role in Gram-positive microorganisms.

A Case Report of Danish Students’ Wellbeing and Stress in a Time of Crisis and Recoveries

This article examines Danish students’ wellbeing, distinguishing between emotional, social, and academic wellbeing and between different types of stressors, understood as factors that can respectively induce and mitigate the risk of stress. An exploratory factor analyses on data from Danish students in December 2022 empirically confirm the three dimensions of wellbeing and identify two stressor factors (anxiety and security). The article illustrates how the wellbeing and stressor factors can be used in a cluster analysis to identify and clarify students at risk. In a cross-sectional perspective focusing on December 2022, the article identifies six clusters of Danish students with different levels of wellbeing and stressors. The students in the different clusters have varying characteristics with regard to the five factors (three wellbeing and two stressors) and thus also to what degree they each suffer. By applying The Stress Framework, we characterize the different clusters as a cluster with no stress (20% of the students), a cluster with positive-to-tolerable stress (20% of the students), a cluster with tolerable stress (23% of the students), a cluster with tolerable-to-toxic stress (16% of the students), and two clusters with toxic stress (9% and 12% of the students respectively). Finally, we discuss which of the clusters of students that are in risk of negative long-term educational consequences, and we suggest that it is important to implement mitigating initiatives aimed at students with characteristics as those in the identified clusters with tolerable-to-toxic and toxic stress.

Molecular Cloning and Functional Characterization of Catalase in Stress Physiology, Innate Immunity, Testicular Development, Metamorphosis, and Cryopreserved Sperm of Pacific Abalone.

Catalase is a crucial enzyme of the antioxidant defense system responsible for the maintenance of cellular redox homeostasis. The aim of the present study was to evaluate the molecular regulation of catalase (Hdh-CAT) in stress physiology, innate immunity, testicular development, metamorphosis, and cryopreserved sperm of Pacific abalone. Hdh-CAT gene was cloned from the digestive gland (DG) of Pacific abalone. The 2894 bp sequence of Hdh-CAT had an open reading frame of 1506 bp encoding 501 deduced amino acids. Fluorescence in situ hybridization confirmed Hdh-CAT localization in the digestive tubules of the DG. Hdh-CAT was induced by different types of stress including thermal stress, H2O2 induction, and starvation. Immune challenges with Vibrio, lipopolysaccharides, and polyinosinic-polycytidylic acid sodium salt also upregulated Hdh-CAT mRNA expression and catalase activity. Hdh-CAT responded to cadmium induced-toxicity by increasing mRNA expression and catalase activity. Elevated seasonal temperature also altered Hdh-CAT mRNA expression. Hdh-CAT mRNA expression was relatively higher at the trochophore larvae stage of metamorphosis. Cryopreserved sperm showed significantly lower Hdh-CAT mRNA expression levels compared with fresh sperm. Hdh-CAT mRNA expression showed a relationship with the production of ROS. These results suggest that Hdh-CAT might play a role in stress physiology, innate immunity, testicular development, metamorphosis, and sperm cryo-tolerance of Pacific abalone.

Types of stressors and their influence on human capital in the gaming industry

Research indicates a clear need for society to improve the quality of human capital by reducing stress at the workplace in order to improve the wellbeing of employees, the organization and society. The daily stress of employees has increased on the global stage, therefore research examining different aspects of workplace stress is necessary. The goal of this research was to determine the types of stress among employees in the gaming industry through the analysis of the intensity of their negative emotional response to different sources of work related stress. 753 subjects (80.1% of women, average age 25.2 ? 3.21). The Stress Scale in Young-30 (SSM-30) was used (? = 0.904). The data were processed using confirmatory factor analysis and structural modeling. Research results show that there are four types of workplace stress in the gaming industry (Family stress, Job expectations, Deficits, Burden). The strongest stressor is heavy workload in the workplace. Reactions to different types of stressors are correlated. The most important correlation is expressed between negative emotional responses to high achievement demands and heavy workload showing that employees respond to demands for more engagement at work and the improvement of the work output in a similar way.

Stress and human health in diabetes: A report from the 19th Chicago Biomedical Consortium symposium.

Stress and diabetes coexist in a vicious cycle. Different types of stress lead to diabetes, while diabetes itself is a major life stressor. This was the focus of the Chicago Biomedical Consortium's 19th annual symposium, "Stress and Human Health: Diabetes," in November 2022. There, researchers primarily from the Chicago area met to explore how different sources of stress - from the cells to the community - impact diabetes outcomes. Presenters discussed the consequences of stress arising from mutant proteins, obesity, sleep disturbances, environmental pollutants, COVID-19, and racial and socioeconomic disparities. This symposium showcased the latest diabetes research and highlighted promising new treatment approaches for mitigating stress in diabetes.

Effect of Heat Stress in Poultry and Its Mitigation

The major problem for huge economic loss in the poultry industry was stress and from different types of stressors; heat stress was a major one. In this developing era, poultry played an important role in almost economic gain of every country. But with changing climatic conditions it had become hard to maintain the temperature in poultry production system. Heat stress effects the overall performance of both layers and broiler in terms of meat quality, growth, egg quality and egg production. If these types of parameters start showing in poultry farms timely taken steps will save farm from huge economic loss. Scientists are using different methods and techniques to alleviate the devastating effects of heat stress in both economically important poultry sectors, layer and broiler. Providing birds with suitable environmental conditions like proper ventilation and stocking density helps minimize HS. Supplementation of feed additives also helps in reducing damaging effects of HS by improving performance and gut health. Scientists worldwide are trying to develop birds with high heat tolerating ability so that birds will perform well during high-temperature phase. Conditioning of birds with high temperature at early age also helps the birds to perform better in later phases of life. This article highlights major issues regarding to chicken health under HS condition and some techniques to perform well under stressed conditions.

DAILY ASSOCIATIONS BETWEEN STRESSOR CONTROL AND AFFECT VARY AS A FUNCTION OF STRESSOR TYPE

Abstract Perceived control is an important psychosocial correlate of emotional well-being. Using data from the National Study of Daily Experiences (N=1,797, M=55.82 years, SD=10.35, 57.27% Female), we examined how self-reported control over different types of stressors (arguments, avoided arguments, work, home, network) was associated with negative affect (NA) and positive affect (PA). Over 8 consecutive days in waves conducted in ~2008 and ~2017, people reported their daily NA, PA, and control over stressors they had experienced. Within-person associations revealed lower NA on days when stressor control was higher than usual (p&amp;lt;.001), driven by control over arguments, avoided arguments, and work stressors specifically. PA was higher on days when individuals perceived greater control over avoided and actual arguments (ps&amp;lt;.001), but lower on days when individuals perceived greater control over network stressors (p&amp;lt;.01). Results suggest the facilitative role of control over daily stress for emotional well-being depends on the type of stressor experienced.