Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 7.152
Filtrar
1.
Laryngorhinootologie ; 102(5): 326, 2023 05.
Artigo em Alemão | MEDLINE | ID: mdl-37141869

Assuntos
Amigos , Humanos
2.
PLoS One ; 18(5): e0283723, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37163545

RESUMO

On social networking sites, users are continuously exposed to a variety of posts from the networked individuals. Such information may often influence recipients' perceptions of what is important and goal pursuits such as materialism. Even though several studies have examined the negative consequences of using social networking sites, less attention has been paid to the role of friends' number and its impact on people's life goal pursuits. This study aimed to investigate the dark side of online friends and explored why and when more friends in social networking sites would promote materialism. Based on a sample of 264 WeChat users, study 1 discovered that friends' number positively impacted materialism through extrinsic goal (i.e., wealth and status). Additionally, such association was moderated by social comparison orientation and self-esteem. Importantly, self-esteem buffers the detrimental effect of friends' number on materialism while social comparison orientation increases it. Study 2 further tested the causal relationship and showed that friends' number on SNS might become a signal to indicate materialism via an experiment. In conclusion, our findings add to the understanding of psychological processes regarding the dark side of online friends' number and render suggestions for developing positive personal value.


Assuntos
Amigos , Comparação Social , Humanos , Amigos/psicologia , Autoimagem , Rede Social
3.
Sci Rep ; 13(1): 7974, 2023 May 17.
Artigo em Inglês | MEDLINE | ID: mdl-37198298

RESUMO

Cultural outsiders, like immigrants or international students, often struggle to make friends. We propose that one barrier to social connection is not knowing what it means to be socially competent in the host culture. First-year students at a U.S. business school (N = 1328) completed a social network survey and rated their own social competence and that of several peers. International students were rated by peers as less socially competent than U.S. students, especially if they were from nations more culturally dissimilar to the U.S. International students' self-reported competence ratings were uncorrelated with peers' judgments. Social network analysis revealed international students were less central to their peer networks than U.S. students, although this gap was reduced if peers evaluated them as socially competent. Peer-reported competence mediated the effects of international student status on social network centrality. Since learning local norms takes time, we suggest inclusivity will require host communities to define social competence more broadly.


Assuntos
Grupo Associado , Habilidades Sociais , Humanos , Estudantes , Rede Social , Amigos
4.
PLoS One ; 18(5): e0283117, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37172045

RESUMO

The present study contrasts two forms of peer status as sources of friend influence: Relative likeability and relative popularity. Participants included 310 children (142 boys, 168 girls), ages 9 to 12, in stable reciprocated friendships. Peer nominations were collected at two time points, 8 to 14 weeks apart. After removing overlapping variance through residualization, partners in each friend dyad were categorized into roles on the basis of relative (to the partner) popularity and relative (to the partner) likeability. Dyadic analyses compared more- and less-liked friends and more- and less-popular friends in terms of their influence over physical aggression, relational aggression, prosocial behavior, and academic achievement. Higher initial relational aggression, prosocial behavior, and academic achievement among more-liked partners predicted greater increases in the same among less-liked partners, but not the reverse. Unexpectedly, physical aggression among less-liked partners predicted increases in physical aggression among more-liked partners. More popular friends did not influence less popular friends on any of these variables, although (also unexpectedly) less-popular friends influenced the academic achievement of more-popular friends. Taken together, the findings suggest that during the pre- and early adolescent years, relative influence within a friendship tends to be apportioned on the basis of likeability, not popularity.


Assuntos
Amigos , Relações Interpessoais , Masculino , Feminino , Adolescente , Humanos , Criança , Grupo Associado , Agressão , Emoções
5.
J Youth Adolesc ; 52(7): 1417-1432, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37133557

RESUMO

There is mixed evidence for depression socialization, a process by which friends affect each other's level of depressive symptoms. The current study examined whether adolescents' baseline depressive symptoms and three dimensions of autonomous functioning (autonomy, peer resistance, and friend adaptation) make adolescents more or less sensitive to depression socialization, and how these dimensions of autonomous functioning were connected. In this preregistered, two-wave longitudinal study, participants completed questionnaires on depressive symptoms, autonomy, and peer resistance and participated in a task to assess friend adaptation. Participants were 416 Dutch adolescents (Mage = 11.60, 52.8% girls) across 230 close friend dyads. In contrast to expectations, results showed no significant depression socialization nor significant moderation. Furthermore, autonomy and peer resistance were related but distinct constructs, and not related to friend adaptation. These findings suggest that there is no depression socialization in early adolescence, regardless of level of autonomous functioning.


Assuntos
Comportamento do Adolescente , Amigos , Feminino , Humanos , Adolescente , Masculino , Socialização , Estudos Longitudinais , Depressão , Grupo Associado , Relações Interpessoais
6.
Subst Use Misuse ; 58(8): 1053-1061, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37129011

RESUMO

Background: Recent cognitive neuroscience models of value-based decision-making suggest value-based choices for alcohol are sensitive to various inputs, such as context and social influence. In two online experiments, we tested whether manipulating these inputs influenced proxies for alcohol value. Experiment 1: 157 social drinkers were presented with 4 hypothetical scenarios (drinking alone, with friends who are also drinking, with friends but trying to "cut-down" for health reasons, with friends who aren't drinking) in a within-subjects design, and completed the Brief Assessment of Alcohol Demand after each as a measure of value. Value for alcohol (number of drinks purchased) was greatest when drinking with friends who were also drinking compared to drinking alone (d = 0.95), friends not drinking (d = 1.49) and friends drinking/health related (d = 1.59). Value for alcohol was also greater when drinking alone compared to with friends who were not drinking (d = 0.55), and also with friends drinking/health related (d = 0.62). Experiment 2: 241 participants were randomly allocated to see one of four categories of images in a 2 (context: bar vs house) x 2 (social influence: enjoy vs not enjoy) design, before completing a Concurrent Choice Task for alcohol and Visual Analog Scales. There were no significant effects found on either task, both taken as proxies for value. Conclusion: There was inconclusive evidence that the value for alcohol could be manipulated by social context. This could be explained by greater saliency of the manipulation in asking participants to imagine themselves in a hypothetical situation as opposed to presenting images depicting drinking scenarios.


Assuntos
Consumo de Bebidas Alcoólicas , Amigos , Humanos , Consumo de Bebidas Alcoólicas/psicologia , Amigos/psicologia , Meio Social
7.
Soc Sci Med ; 327: 115937, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37167920

RESUMO

BACKGROUND: Social isolation has become a serious public health issue. However, most previous studies examine the relationship between social isolation and a single outcome. We aimed to conduct holistic assessments to understand the multidimensional impacts of social isolation on health and well-being. METHODS: We used the three-wave data (2013, 2016, and 2019) obtained from the Japan Gerontological Evaluation Study. Our exposure, obtained from the 2016 survey, was the Social Isolation Index (SII) comprising five components: no partner, poor interaction with children, poor interaction with relatives, poor interaction with friends, and no social participation). We assessed 36 health and well-being outcomes across six dimensions obtained from the 2019 survey: physical/cognitive health, health behaviours, mental health, subjective well-being, social isolation, and cognitive social capital. Pre-exposure characteristics and prior outcome levels in 2013 were adjusted. We included 47,318 respondents for 4 outcomes (death, dementia, and functional disability) and 34,187 respondents for 32 other outcomes. The Bonferroni correction was used to correct for multiple tests. RESULTS: The total SII scores were associated with a wide range of health and well-being outcomes across the six dimensions. Specifically, we found a robust association between an SII score of four or greater with mortality (Odds ratio: 1.89; 95% CI: 1.46-2.43). Among the five components of the SII, poor interaction with friends and no social participation showed robust associations with a wide range of health and well-being. We also found some robust evidence regarding effect modification by gender and age in the associations between the components of the SII and health and well-being. CONCLUSIONS: Social isolation, specifically social interaction with friends and social participation, may affect a wide range of health and well-being among older adults.


Assuntos
Isolamento Social , Participação Social , Criança , Humanos , Idoso , Isolamento Social/psicologia , Saúde Mental , Inquéritos e Questionários , Amigos/psicologia , Estudos Longitudinais
8.
Biomolecules ; 13(5)2023 May 18.
Artigo em Inglês | MEDLINE | ID: mdl-37238722

RESUMO

Ribosomal proteins are fundamental components of the ribosomes in all living cells. The ribosomal protein uS5 (Rps2) is a stable component of the small ribosomal subunit within all three domains of life. In addition to its interactions with proximal ribosomal proteins and rRNA inside the ribosome, uS5 has a surprisingly complex network of evolutionarily conserved non-ribosome-associated proteins. In this review, we focus on a set of four conserved uS5-associated proteins: the protein arginine methyltransferase 3 (PRMT3), the programmed cell death 2 (PDCD2) and its PDCD2-like (PDCD2L) paralog, and the zinc finger protein, ZNF277. We discuss recent work that presents PDCD2 and homologs as a dedicated uS5 chaperone and PDCD2L as a potential adaptor protein for the nuclear export of pre-40S subunits. Although the functional significance of the PRMT3-uS5 and ZNF277-uS5 interactions remain elusive, we reflect on the potential roles of uS5 arginine methylation by PRMT3 and on data indicating that ZNF277 and PRMT3 compete for uS5 binding. Together, these discussions highlight the complex and conserved regulatory network responsible for monitoring the availability and the folding of uS5 for the formation of 40S ribosomal subunits and/or the role of uS5 in potential extra-ribosomal functions.


Assuntos
Amigos , Proteínas Ribossômicas , Humanos , Proteínas Ribossômicas/metabolismo , Proteína-Arginina N-Metiltransferases/química , Ribossomos/metabolismo , RNA Ribossômico/metabolismo , Proteínas Reguladoras de Apoptose/metabolismo
9.
Biomolecules ; 13(5)2023 May 17.
Artigo em Inglês | MEDLINE | ID: mdl-37238717

RESUMO

Oxidative stress participates at the baseline of different non-communicable pathologies such as cardiovascular diseases. Excessive formation of reactive oxygen species (ROS), above the signaling levels necessary for the correct function of organelles and cells, may contribute to the non-desired effects of oxidative stress. Platelets play a relevant role in arterial thrombosis, by aggregation triggered by different agonists, where excessive ROS formation induces mitochondrial dysfunction and stimulate platelet activation and aggregation. Platelet is both a source and a target of ROS, thus we aim to analyze both the platelet enzymes responsible for ROS generation and their involvement in intracellular signal transduction pathways. Among the proteins involved in these processes are Protein Disulphide Isomerase (PDI) and NADPH oxidase (NOX) isoforms. By using bioinformatic tools and information from available databases, a complete bioinformatic analysis of the role and interactions of PDI and NOX in platelets, as well as the signal transduction pathways involved in their effects was performed. We focused the study on analyzing whether these proteins collaborate to control platelet function. The data presented in the current manuscript support the role that PDI and NOX play on activation pathways necessary for platelet activation and aggregation, as well as on the platelet signaling imbalance produced by ROS production. Our data could be used to design specific enzyme inhibitors or a dual inhibition for these enzymes with an antiplatelet effect to design promising treatments for diseases involving platelet dysfunction.


Assuntos
NADPH Oxidases , Isomerases de Dissulfetos de Proteínas , Humanos , NADPH Oxidases/metabolismo , Isomerases de Dissulfetos de Proteínas/metabolismo , Espécies Reativas de Oxigênio/metabolismo , Amigos , Transdução de Sinais , Oxirredução
10.
PLoS Pathog ; 19(5): e1011364, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-37200235

Assuntos
Amigos , Humanos
11.
Am J Health Behav ; 47(2): 290-296, 2023 Apr 30.
Artigo em Inglês | MEDLINE | ID: mdl-37226358

RESUMO

Objective: In this study, we analyzed the effects of online friendship networks on Internet game frequency and time among university students.Methods: Our participants were 34 university students. Online friendship networks were analyzed by social network analysis and degree, closeness, and betweenness centrality. Internet game frequency showed the average frequency of playing Internet games during a week and Internet game time indicated the average time during the day. Results: The Out-degree centrality of online friendship networks, and Out-closeness centrality and Internet game time showed positive (+) correlations. In addition, analysis of causal relationships showed that only Out-degree centrality had a positive (+) effect on Internet game time. Conclusion: To prevent immersion in games and their negative effects, we recommend persons form relationship networks with other friends who have positive goals such as hobbies, leisure activities, and learning.


Assuntos
Amigos , Internet , Humanos , Universidades , República da Coreia , Estudantes
12.
Nature ; 617(7960): 227, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-37138069
13.
PLoS One ; 18(5): e0286085, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37235574

RESUMO

The COVID-19 measures raised societal concerns about increases in adolescents' loneliness. This study examined trajectories of adolescents' loneliness during the pandemic, and whether trajectories varied across students with different types of peer status and contact with friends. We followed 512 Dutch students (Mage = 11.26, SD = 0.53; 53.1% girls) from before the pandemic (Jan/Feb 2020), over the first lockdown (March-May 2020, measured retrospectively), until the relaxation of measures (Oct/Nov 2020). Latent Growth Curve Analyses (LGCA) showed that average levels of loneliness declined. Multi-group LGCA showed that loneliness declined mostly for students with a victimized or rejected peer status, which suggests that students with a low peer status prior to the lockdown may have found temporary relief from negative peer experiences at school. Students who kept all-round contact with friends during the lockdown declined in loneliness, whereas students who had little contact or who did not (video) call friends did not.


Assuntos
Comportamento do Adolescente , COVID-19 , Feminino , Humanos , Adolescente , Masculino , Amigos , Solidão , Pandemias , COVID-19/epidemiologia , Estudos Retrospectivos , Controle de Doenças Transmissíveis , Grupo Associado
14.
Adv Child Dev Behav ; 64: 135-162, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37080667

RESUMO

Family interactions constitute a critical context in which children can learn the basic relational skills that they need to make friends. In turn, friendship quality is a robust predictor of child socioemotional functioning. Therefore, friendship is likely to act as a bridge in a socioemotional developmental cascade linking early family interactions to child subsequent socioemotional adjustment. This study aimed to examine a mediation model linking family alliance (the degree of mother-father-child engagement and coordination in joint activities) in kindergarten to anxiety and depressive symptoms in early adolescence through the mediating role of friendship quality in middle childhood. The family alliance of 87 mother-father-child triads was assessed when children were aged 6 years based on a 15-min videotaped interaction. Children reported on the quality of their relationship with their best friend at age 10 and on their anxiety and depressive symptoms at both 12 and 13 years (averaged). Results showed that children who experienced better family alliance at 6 years had higher relationship quality with their best friend at 10 years which in turn, predicted less anxiety (but not depressive) symptoms in early adolescence. There was a significant indirect effect of family alliance on anxiety through friendship quality. Findings suggest that family alliance may play a central role in shaping children's capacity to develop high-quality friendships, with implications for their subsequent socioemotional functioning. Further longitudinal studies are needed to examine the reciprocal influences unfolding over time that are likely to characterize developmental cascades among family systems, children's developing friendships, and their socioemotional functioning.


Assuntos
Amigos , Relações Interpessoais , Criança , Humanos , Adolescente , Amigos/psicologia , Análise de Mediação , Ansiedade/psicologia , Transtornos de Ansiedade
15.
PLoS One ; 18(4): e0271798, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37071934

RESUMO

The present study was designed to test whether actions on Facebook such as commenting on others' posts can create a sense of commitment to continue performing similar actions in the future. Across four online experiments, we found evidence that regularly commenting on others' Facebook posts generates a sense of commitment to commenting on similar posts in the future, leading people to feel worse about not commenting on a post if they have done so regularly in the past than if they have not done so, and leading them to expect a Facebook friend to be more disappointed if they do not comment when there has been this previous history of commenting. These findings may contribute to illuminating the feelings associated with social media use, including its compulsive aspects and its effects on well-being.


Assuntos
Mídias Sociais , Humanos , Amigos , Emoções
16.
J Affect Disord ; 332: 221-230, 2023 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-37019389

RESUMO

BACKGROUND: This study aimed to estimate the prevalence of suicidal behaviors, i.e. suicidal ideation (SI), suicidal plan (SP), and suicidal attempt (SA) among adolescents with a focus on parental and peer support in eight South-East Asian countries including Bangladesh, Bhutan, Indonesia, Maldives, Myanmar, Nepal, Sri Lanka and Thailand. METHOD: Data were drawn from Global School-based Student Health Survey (GSHS) covering 42,888 adolescents aged 11-17 years. Weighted prevalence of SI, SP, and SA along with country specific prevalence was computed and binary logistic regression was used to identify associated risk factors. RESULTS: Among 42,888 adolescents 19,113 (44.9%) were males and 23,441 (55.1%) females. Overall prevalence of SI, SP and SA is 9.10%, 10.42% and 8.54%, respectively. Myanmar demonstrated the lowest SI (1.07%) and SP (0.18%) whereas lowest SA was found in Indonesia (3.79%). Maldives had the highest prevalence of SI, SP and SA which were 14.13%, 19.02% and 13.38% respectively. Overall suicidal behaviors were associated with being female [AOR: SI-1.26 (1.06,1.50), SP-1.34 (1.14,1.57)], high levels of sedentary behavior [AOR: SI-2.08 (1.62,2.66), SP-1.86 (1.49,2.32), SA-1.96 (1.45,2.64)], involvement in physical fighting [AOR: SI-1.30 (1.07,1.58), SP-1.37 (1.14,1.65), SA-1.50 (1.17,1.90)], being seriously injured [AOR: SI-1.40 (1.17,1.67), SP-1.44 (1.22,1.69), SA-1.74 (1.39,2.17)], being bullied [AOR: SI- 1.68 (1.39,2.02), SP-1.34 (1.12,1.60), SA-1.88 (1.50,2.36)], feeling lonely (most of time or always) [AOR: SI-3.41(2.60,4.46), SP-1.92 (1.48,2.47), SA-2.25 (1.62,3.13)], lack of parental support (never checking homework) [AOR: SI-1.59 (1.25,2.02), SP-1.52 (1.22,1.90)] and not having close friends [AOR: SI-2.19 (1.66,2.89), SP-2.26 (1.74,2.94), SA-4.23 (3.10,5.78)]. CONCLUSION: Though prevalence of suicidal behaviors varies, a range of cross-cutting risk factors exists that warrant further examination. We recommend focusing on strengthening parental and peer support, targeted programs addressing physical activity, bullying, loneliness and mental-health of adolescents.


Assuntos
Comportamento do Adolescente , Ideação Suicida , Masculino , Humanos , Adolescente , Feminino , População do Leste Asiático , Tentativa de Suicídio , Amigos , Prevalência , Fatores de Risco , Pais
17.
Patient Educ Couns ; 112: 107719, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37018880

RESUMO

OBJECTIVE: Family/friend involvement and diabetes distress are associated with outcomes for persons with type 2 diabetes (PWDs), but little is known about how they relate to each other. We aim to (1) describe associations between PWD and support person (SP) distress; (2) describe associations between involvement and diabetes distress for PWDs, for SPs, and across the dyad; and (3) explore whether associations differ by PWD-SP cohabitation. METHODS: PWDs and SPs co-enrolled in a study evaluating the effects of a self-care support intervention and completed self-report measures at baseline. RESULTS: PWDs and SPs (N = 297 dyads) were, on average, in their mid-50s and around one-third identified as racial or ethnic minorities. The association between PWD and SP diabetes distress was small (Spearman's ρ = 0.25, p < 0.01). For PWDs, experienced harmful involvement from family/friends was associated with more diabetes distress (standardized ß = 0.23, p < 0.001) independent of helpful involvement in adjusted models. Separately, SPs' self-reported harmful involvement was associated with their own diabetes distress (standardized ß = 0.35, p < 0.001) and with PWDs' diabetes distress (standardized ß = 0.25, p = 0.002), independent of SPs' self-reported helpful involvement. CONCLUSION AND PRACTICE IMPLICATIONS: Findings suggest dyadic interventions may need to address both SP harmful involvement and SP diabetes distress, in addition to PWD distress.


Assuntos
Demência , Diabetes Mellitus Tipo 2 , Humanos , Adulto , Diabetes Mellitus Tipo 2/terapia , Amigos , Autorrelato
18.
19.
MMW Fortschr Med ; 165(7): 35, 2023 04.
Artigo em Alemão | MEDLINE | ID: mdl-37016231

Assuntos
Dedos , Amigos , Humanos
20.
Parasite Immunol ; 45(5): e12982, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-37038955

RESUMO

Helminths are metazoan parasites affecting about one third of the worldwide population. Chronic helminth infections (CHIs) confer immunological tolerance to harmless and self-antigens mediated by regulatory T cells (Treg) that are up-regulated. In coronavirus disease 2019 (COVID-19), abnormal adaptive immune response and unrestrained innate immune response could result in local and systemic immune-mediated tissue damage. COVID-19 and CHIs establish complicated immune interactions due to SARS-CoV-2-induced immunological stimulation and CHIs-induced immunological tolerance. However, COVID-19 severity in patients with CHIs is mild, as immuno-suppressive anti-inflammatory cytokines counterbalance the risk of cytokine storm. Here, an overview of the interplay between helminths and COVID-19 severity is given. CHIs through helminth-derived molecules may suppress SARS-CoV-2 entry and associated hyperinflammation through attenuation of the TLR4/NF-kB signalling pathway. In addition, CHIs may reduce the COVID-19 severity by reducing the SARS-CoV-2 entry points at ACE2/DPP4/CD147 axis in the initial phase and immunomodulation in the late phase of the disease by suppressing TLR4/NF-kB signalling pathway.


Assuntos
COVID-19 , Coinfecção , Helmintos , Humanos , Animais , SARS-CoV-2 , NF-kappa B , Amigos , Receptor 4 Toll-Like
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...