Metagenomic characterization of a novel non-ammonia-oxidizing Thaumarchaeota from hadal sediment.

BACKGROUND: The hadal sediment, found at an ocean depth of more than 6000 m, is geographically isolated and under extremely high hydrostatic pressure, resulting in a unique ecosystem. Thaumarchaeota are ubiquitous marine microorganisms predominantly present in hadal environments. While there have been several studies on Thaumarchaeota there, most of them have primarily focused on ammonia-oxidizing archaea (AOA). However, systematic metagenomic research specifically targeting heterotrophic non-AOA Thaumarchaeota is lacking. RESULTS: In this study, we explored the metagenomes of Challenger Deep hadal sediment, focusing on the Thaumarchaeota. Functional analysis of sequence reads revealed the potential contribution of Thaumarchaeota to recalcitrant dissolved organic matter degradation. Metagenome assembly binned one new group of hadal sediment-specific and ubiquitously distributed non-AOA Thaumarchaeota, named Group-3.unk. Pathway reconstruction of this new type of Thaumarchaeota also supports heterotrophic characteristics of Group-3.unk, along with ABC transporters for the uptake of amino acids and carbohydrates and catabolic utilization of these substrates. This new clade of Thaumarchaeota also contains aerobic oxidation of carbon monoxide-related genes. Complete glyoxylate cycle is a distinctive feature of this clade in supplying intermediates of anabolic pathways. The pan-genomic and metabolic analyses of metagenome-assembled genomes belonging to Group-3.unk Thaumarchaeota have highlighted distinctions, including the dihydroxy phthalate decarboxylase gene associated with the degradation of aromatic compounds and the absence of genes related to the synthesis of some types of vitamins compared to AOA. Notably, Group-3.unk shares a common feature with deep ocean AOA, characterized by their high hydrostatic pressure resistance, potentially associated with the presence of V-type ATP and di-myo-inositol phosphate syntheses-related genes. The enrichment of organic matter in hadal sediments might be attributed to the high recruitment of sequence reads of the Group-3.unk clade of heterotrophic Thaumarchaeota in the trench sediment. Evolutionary and genetic dynamic analyses suggest that Group-3 non-AOA consists of mesophilic Thaumarchaeota organisms. These results indicate a potential role in the transition from non-AOA to AOA Thaumarchaeota and from thermophilic to mesophilic Thaumarchaeota, shedding light on recent evolutionary pathways. CONCLUSIONS: One novel clade of heterotrophic non-AOA Thaumarchaeota was identified through metagenome analysis of sediments from Challenger Deep. Our study provides insight into the ecology and genomic characteristics of the new sub-group of heterotrophic non-AOA Thaumarchaeota, thereby extending the knowledge of the evolution of Thaumarchaeota. Video Abstract.

Effects of physical exercise on non-suicidal self-injury in adolescents: the chain mediating role of perceived social support and self-concept.

Objective: To study the effect of physical exercise on non-suicidal self-injury in adolescents and to verify the chain mediating role of perceived social support and self-concept. Methods: A survey study was conducted on 1,426 adolescents in Chengdu, Sichuan Province. A chain mediation model was used to verify whether perceived social support and self-concept played a mediating role. Results: Physical exercise was significantly negatively associated with non-suicidal self-injury in adolescents (ß = -0.53, p < 0.01) and significantly positively associated with perceived social support and self-concept (ß = 0.52, 0.54, p < 0.01), and perceived social support and self-concept were significantly negatively associated with non-suicidal self-injury (ß = -0.59, p < 0.01; ß = -0.64, p < 0.01), and perceived social support was able to significantly and positively associate self-concept (ß = 0.76, p < 0.01). Conclusion: Perceived social support and self-concept play a chain mediating role in the effect of physical exercise on non-suicidal self-injury in adolescents, and it is recommended that the development of perceived social support and self-concept be emphasized during adolescents' development, which has the potential to reduce the incidence of non-suicidal self-injurious behaviors in adolescents.

Mediating Role of Teamwork in the Influence of Team Role on Team Performance.

Objective: As an important hospital task, the quality and efficiency of nursing practice directly affect the medical quality and sustainable development of the hospital. Increasing attention is now paid by managers to nursing teamwork. From the level of the nursing team, this study explored the relationship between team roles, using teamwork as the intermediate variable, and team performance to provide a theoretical foundation for the human resource management of nursing managers. Methods: Taking 29 general inpatient areas of a tertiary general hospital in Beijing as research objects, a questionnaire survey was used to collect basic information on nursing staff, teamwork, team roles and team performance. The collected data were analysed. A pathway analysis based on a multiple regression analysis was used to interpret the effect of each team role on teamperformance. Results: ①The mean and maximum value of emotional type (Teamworker and Finisher) were the largest in the role combination of nursing team. In the team role combination, the average value of emotional type was 12.58 ± 1.48, with significant difference (P<0.001). ② The average level of emotion, thinking and decision of team role combination is positively correlated with work performance; The average level and maximum value of emotion have a positive correlation with team cooperation; The average level of willingness was negatively correlated with team cooperation, job performance and satisfaction (P<0.05). ③ Teamwork plays a certain intermediary role in the mean value of emotion to improve level of team satisfaction and performance. Conclusion: This study identified the important roles of different types of nursing staff in work performance and used a pathway analysis to create a path showing each role. Increasing the emotional-type nursing staff in a team can not only improve the mean level of team emotion but also effectively improve both teamwork and work performance.

Remote-Controlled Drone System through Eye Movements of Patients Who Need Long-Term Care: An Intermediary's Role.

The use of a remote-controlled drone system (RDS) by eye movements was studied to assist patients in psychiatric long-term care (PLTC) to allow them to view the environment outside the hospital, hoping that this will bring them some enjoyment. However, successfully applying this system requires human intermediaries in facilitating the interactions between patients and RDS operators. The aim of the study was to describe the role of nurses as intermediaries in the application of an RDS through eye movements of patients PLTC. This study employed the Intentional Observational Clinical Research Design. Data collection was performed in November 2021 at a psychiatric hospital with selected patients in PLTC. Seventeen patients took part in the indoor experiment, whereas 23 patients took part in the outdoor experiment. Fifteen of the 23 patients in the outdoor experiment were the same patients who took part in the indoor experiment. Most of the patients in the indoor and outdoor test arenas could successfully, delightfully, and safely fly the drone. This study demonstrated that RDS using just eye movements could increase the quality of life in older patients with psychiatric problems in PLTC. For the successful use of this drone system, nurse intermediaries assumed critically significant roles.

The influence of job stress and psychological contract on occupational adaptation of newly-hired policemen / 中国职业医学

@#Abstract: Objective ， To explore the relationship among job stress psychological contract and occupational adaptation in - . Methods newly hired policemen A total of 413 new police officers in a southwest province were selected as the research ， subjects using convenient sampling method. The Chinese version of Perceived Stress Scale the Psychological Contract ， Questionnaire and the Occupational Adaptation Scale were used to investigate their job stress psychological contract and occupational adaptation respectively. The effects of job stress and psychological contract on occupational adaptation was analyzed. Results ， （ ），（ ） The total scores of job stress psychological contract and occupational adaptation were 27.6±7.1 63.9±16.6 and （ ）， - 56.2±8.6 respectively. The work pressure of newly hired police officers was negatively correlated with occupational ［ （r） ，P< ］ adaptation correlation coefficient =−0.61 0.01 . There was a positive correlation between psychological contract and （r ，P< ） occupational adaptation =0.59 0.01 . The results of hierarchical regression analysis showed that after adjusting for ， ， ， ， ， confounding factors such as gender education level marriage fertility the stronger the sense of out of control in work stress （P< ）； ， the lower the level of occupational adaptation 0.01 the higher the score of psychological contract the higher the level of （P< ） occupational adaptation 0.01 . The psychological contract played a mediating role between job stress and occupational ， Conclusion - adaption accounting for 12.5% of the total effect. The job stress and psychological contract of the newly hired policemen can affect their occupational adaptation. Psychological contract plays a partial intermediary role in job stress on occupational adaptation.

Information Matching: How Regulatory Focus Affects Information Preference and Information Choice.

Individuals often prefer information that matches their needs. In this study, we aimed to explore the relationship between regulatory focus and information preference. Specifically, we investigated the effects of promotion-focused information and prevention-focused information on explicit and implicit information preferences and choice behavior, and examined the mediating roles of information preference. In Experiment 1, we found that prevention-focused individuals were more likely to choose functional information, whereas promotion-focused people were more likely to choose hedonic information. However, there was no significant relationship between regulatory focus and explicit preference and no mediating effect of explicit information preference. In Experiment 2, we found that promotion-focused individuals had a greater implicit preference for hedonic information than did prevention-focused individuals. Implicit information preference mediated the influence of regulatory focus on information choice. The findings of this study may help us understand the psychological mechanism underlying information preference and have important implications for information dissemination.

Impact of OXTR Polymorphisms on Subjective Well-Being: The Intermediary Role of Attributional Style.

Polymorphisms in the oxytocin receptor (OXTR) gene are related to individual differences in negative emotions, such as depressive symptoms and anxiety. However, it remains unclear what the potential roles of OXTR polymorphisms are in subjective well-being (SWB), which is negatively correlated with depressive symptoms. We examined attributional styles as mediator between SWB and five polymorphisms of the oxytocin receptor gene (OXTR rs53576, rs2254298, rs1042778, rs2268494, and rs2268490) among 627 full-time college freshmen (M age = 20.90, SD = 0.82 for male; M age = 20.81, SD = 0.92 for female) using structural equation modeling. The results showed that individuals with the OXTR rs2254298 AA genotype and rs53576 AA/GA genotype reported higher scores on SWB, which suggested that individuals with this genotype experienced more happiness. Moreover, external attributional style partially mediated the association between OXTR rs2254298 polymorphism and SWB (ß = 0.019, 95%CI [0.001, 0.036], p = 0.035). In conclusion, our findings demonstrated that the genetic variations of OXTR played a role in the individual differences of SWB, and external attribution style could mediate the association.

Intermediary role of experiential avoidance in neurosis and posttraumatic stress response in firefighters / 中国职业医学

OBJECTIVE: To explore the mediating effect of experiential avoidance on neurosis and posttraumatic stress response in firefighters. METHODS: A cluster random sampling method was used to select 275 male firefighters from 26 Fire Alarm squadrons in a province of China.The Neuroticism subscale of Eysenck Personality Questionnaire Short Scale, the Acceptance and Action Questionnaire-Second Edition, and the Impact of Event Scale were used to investigate the relationship of neurosis, experiential avoidance and posttraumatic stress response. RESULTS: The median score of neurosis, experiential avoidance and posttraumatic stress response was 5, 21 and 15, respectively. Both neurosis and experiential avoidance were positively correlated with posttraumatic stress syndromes(Spearman correlation coefficient were 0.45 and 0.45, P<0.01). The total effect of neurosis on posttraumatic stress response in firefighters was 0.57. The intermediary role of experiential avoidance on neurosis and posttraumatic stress response was 0.19, accounting for 33.33% of the total effect. CONCLUSION: Experiential avoidance plays a partial positive mediating role between neurosis and posttraumatic stress response in firefighters.

The mediating role of psychological capital between the sense of occupational mission and job engagement in preschool teachers / 中国职业医学

OBJECTIVE: To explore the mediating role of psychological capital in the sense of occupational mission and work engagement in preschool teachers.METHODS: A method of stratified cluster sampling was used to select 464 preschool teachers from 16 kindergartens in a city of Hubei Province. Occupational Mission Scale, Psychological Capital Questionnaire and Job Involvement Questionnaire were used to investigate their sense of occupational mission, psychological capital and job engagement. RESULTS: The total score of occupational mission was(48.6±6.9); the total score of psychological capital was(87.1±11.8); and the total score of work engagement was(79.8±11.4). Occupational mission was positively correlated with job engagement [correlation coefficient(r) was 0.607, P<0.01].The self-efficacy, hope, tenacity and optimism were positively correlated with job engagement(r were 0.526, 0.544, 0.573, 0.415, respectively, P<0.01). The mediating effect of psychological capital on occupational mission and work engagement was 0.15, accounting for 26.8% of the total effect. CONCLUSION: The sense of occupational mission can directly or indirectly promote job engagement. The psychological capital plays a mediating role between occupational mission and job engagement.

Mediating role of psychological capital on occupational stress and job satisfaction in disease prevention and control personnel / 中国职业医学

OBJECTIVE: To explore the mediating effect of psychological capital on occupational stress and job satisfaction in disease prevention and control personnel. METHODS: A cluster random sampling method was used to select 541 stuffs of the center of disease control( CDC) as the research subjects from Zhumadian City in Henan Province. The Effort-Reward Imbalance Questionnaire, Pychological Capital Questionnaire and Minnesota Satisfaction Questionnaire were used to investigate occupational stress,psychological capital and job satisfaction. RESULTS: The total scores of occupational stress,psychological capital and job satisfaction in the CDC staff were( 65. 9 ± 7. 3),( 100. 3 ± 14. 1),and( 70. 7 ± 13. 0),respectively. Both contribution and internal input were negatively correlated with job satisfaction( r were-0. 397 and-0. 158,P < 0. 05). Reward,self-efficacy,hope,tenacity and optimism were positively correlated with job satisfaction( r were 0. 210,0. 245,0. 485,0. 309 and 0. 332,P < 0. 05). The intermediary role of psychological capital between occupational stress and job satisfaction was-0. 10,accounting for 23. 2% of the total effect. CONCLUSION: Psychological capital plays a partial negative mediating role between occupational stress and job satisfaction.

Role of protein kinase Cδ in dopaminergic neurotoxic events.

The pro-apoptotic role of Protein kinase Cδ (PKCδ), a member of the novel PKC subfamily, has been well-documented in various pathological conditions. In the central nervous system, the possible role of PKCδ has been studied, mainly in the condition of dopaminergic loss. It has been suggested that the phosphorylation of PKCδ at tyrosine 311 residue (Tyr311) by redox-sensitive Src family kinases (SFKs) is critical for the caspase-3-mediated proteolytic cleavage, which produces the constitutively active cleaved form of PKCδ. Mitochondrial translocation of cleaved PKCδ has been suggested to facilitate mitochondria-derived apoptosis and oxidative burdens. Moreover, it has been suggested that PKCδ contribute to neuroinflammation through the transformation of microglia into the pro-inflammatory M1 phenotype and the assembly of membrane NADPH oxidase in dopaminergic impairments. Interestingly, mitochondrial respiratory chain inhibitors or neuroinflammogens have shown to induce PKCδ activation in dopaminergic systems. Thus, PKCδ activation may be one of the pivotal causes of neuropathologic events, and could amplify these processes further in a positive feedback manner. Furthermore, PKCδ may play an intermediary role in connecting each neuropathologic event. This review affords insight into the role of PKCδ in various dopaminergic neurotoxic models, which could provide a potential target for mitigating dopaminergic neurotoxicity.