Publications by authors named "Vanhalst J"

The thermophilic bacterium Rhodothermus marinus has mainly been studied for its thermostable enzymes. More recently, the potential of using the species as a cell factory and in biorefinery platforms has been explored, due to the elevated growth temperature, native production of compounds such as carotenoids and exopolysaccharides, the ability to grow on a wide range of carbon sources including polysaccharides, and available genetic tools. A comprehensive understanding of the metabolism of cell factories is important.

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Although it is assumed that loneliness in one relationship might put one at risk of experiencing loneliness in another relationship, this association has rarely been examined as such. In this longitudinal study, we examined the associations between peer- and parent-related loneliness in a sample of 3391 adolescents across three waves ( = 14.53; 59.

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The Virus-X-Viral Metagenomics for Innovation Value-project was a scientific expedition to explore and exploit uncharted territory of genetic diversity in extreme natural environments such as geothermal hot springs and deep-sea ocean ecosystems. Specifically, the project was set to analyse and exploit viral metagenomes with the ultimate goal of developing new gene products with high innovation value for applications in biotechnology, pharmaceutical, medical, and the life science sectors. Viral gene pool analysis is also essential to obtain fundamental insight into ecosystem dynamics and to investigate how viruses influence the evolution of microbes and multicellular organisms.

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Youth with type 1 diabetes (T1D) must adhere to a complex treatment regimen to prevent health complications. Friends may provide diabetes-specific support to help youth manage diabetes, but evidence on whether youth benefit from diabetes-specific friend support is inconclusive. The present study first investigated whether satisfaction with friend support was linked to psychological distress and diabetes management.

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Background: Repetitive Negative Thinking (RNT) is a well-established predictor in adolescents of emotional problems, such as depression. Surprisingly little research, however, has looked at the relative importance of RNT vs. more interpersonally relevant variables in the context of depression, such as loneliness and lack of social connectedness.

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Background: Despite clear evidence that peers are crucial for youth development, research on the role of peers for youth with Type 1 diabetes (T1D) is scarce.

Purpose: The present study identified trajectory classes of perceived peer functioning in youth with T1D, based on peer support and extreme peer orientation (EPO). Further, classes were compared with respect to their trajectories of depressive symptoms, diabetes-specific distress, treatment adherence, and HbA1c values.

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Youth with type 1 diabetes are confronted with the challenging task of integrating diabetes into their identity. This integration process, referred to as illness identity, may play an important role in how youth with type 1 diabetes cope with normative and illness-specific challenges. In line with socio-ecological theorizing, the present study investigated the longitudinal interplay between illness identity and two important social contexts for youth, the parent and peer contexts.

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Many longitudinal studies have investigated whether self-esteem predicts depressive symptoms (vulnerability model) or the other way around (scar model) in adolescents. The most common method of analysis has been the Cross-lagged Panel Model (CLPM). The CLPM does not separate between-person effects from within-person effects, making it unclear whether the results from previous studies actually reflect the within-person effects, or whether they reflect differences between people.

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Social relationships are of vital importance for children's and adolescents' development, and disruptions in these relationships can have serious implications. Such disruptions play a central role in both loneliness and social anxiety. Although both phenomena are closely related, they have largely been studied separately, and important questions have remained unanswered concerning how both go together within and across time.

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Co-rumination has been shown advantageous for friendship quality, but disadvantageous for mental health. Recently, two components have been distinguished, with co-brooding predicting increases in depressive symptoms and co-reflection decreases. The current study aimed to replicate these findings and investigated whether both components also show differential relations with friendship quality.

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In adolescence, when establishing and maintaining satisfying social relationships is a key developmental task, chronic loneliness is related to a host of negative outcomes. This study aimed at examining motivational and regulatory factors related to chronic loneliness. Specifically, this study investigated chronically lonely adolescents' responses to hypothetical vignettes of social inclusion and exclusion, thereby focusing on (a) adolescents' willingness and motivation to approach social inclusion and (b) emotion regulation strategies to deal with social exclusion.

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Adolescents are particularly vulnerable to experiencing feelings of loneliness. Changes in different social contexts and the inability to cope with these changes can result in different types of loneliness. According to the multidimensional view on loneliness, loneliness can be experienced in relationships with peers and parents and can be placed in a broader perspective by taking into account attitudes toward aloneness (i.

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Because loneliness is a subjective experience, it is often examined using self-reports. Yet, researchers have started to use other-reports to examine loneliness. As previous research suggests that discrepancies between self- and other views might have important implications for adolescents' mental health, the current study examines discrepancies in multi-informant reports on adolescents' loneliness in relation with prosocial behavior, aggression, and adolescents' parent-related loneliness.

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Background: In intensive care unit (ICU) patients, acute kidney injury treated with renal replacement therapy (AKI-RRT) is associated with adverse outcomes. The aim of this study was to evaluate variables associated with long-term survival and kidney outcome and to assess the composite endpoint major adverse kidney events (MAKE; defined as death, incomplete kidney recovery, or development of end-stage renal disease treated with RRT) in a cohort of ICU patients with AKI-RRT.

Methods: We conducted a single-center, prospective observational study in a 50-bed ICU tertiary care hospital.

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Contradicting evidence exists regarding the link between loneliness and sensitivity to facial cues of emotion, as loneliness has been related to better but also to worse performance on facial emotion recognition tasks. This study aims to contribute to this debate and extends previous work by (a) focusing on both accuracy and sensitivity to detecting positive and negative expressions, (b) controlling for depressive symptoms and social anxiety, and (c) using an advanced emotion recognition task with videos of neutral adolescent faces gradually morphing into full-intensity expressions. Participants were 170 adolescents (49% boys; M = 13.

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In adolescence, feeling lonely and dealing with time spent alone become particularly salient. The present study examined the co-occurrence of parent- and peer-related loneliness, and positive and negative attitudes toward aloneness, using cluster analysis. In three independent samples, covering about 1800 adolescents (61 % female), six meaningful groups were identified.

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The present study examined the factor structure and construct validity of the Children's Loneliness Scale (CLS), a popular measure of childhood loneliness, in Belgian children. Analyses were conducted on two samples of fifth and sixth graders in Belgium, for a total of 1,069 children. A single-factor structure proved superior to alternative solutions proposed in the literature, when taking item wording into account.

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The goal of this study was to identify mechanisms associated with chronic loneliness by examining the effect of adolescents' accumulated history of loneliness on responses to new social situations. Specifically, this study investigated whether attributions and emotions in situations of social inclusion and exclusion differ between chronically lonely adolescents and adolescents with a different loneliness history. A total of 730 adolescents (Mage at Wave 1 = 15.

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Most people have experienced loneliness and have been able to overcome it to reconnect with other people. In the current review, we provide a life-span perspective on one component of the evolutionary theory of loneliness-a component we refer to as the reaffiliation motive (RAM). The RAM represents the motivation to reconnect with others that is triggered by perceived social isolation.

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Purpose: Acquiring close peer relationships is an important developmental task in adolescence. This task may be particularly demanding for adolescents with congenital heart disease (CHD), who face disease-specific challenges putting them at risk for social isolation and loneliness. This study compared cross-sectional levels of loneliness in adolescents with and without CHD; examined the longitudinal course of loneliness and identified different developmental trajectory classes in adolescents with CHD; and investigated to what extent these trajectory classes are accompanied by differences in depressive symptoms and perceived health.

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Low self-esteem has been shown to relate to concurrent and later feelings of loneliness in adolescence. However, it remains unclear why low self-esteem puts adolescents at risk for experiencing loneliness. Further, longitudinal research on the direction of effects between loneliness and self-esteem is virtually non-existent.

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The present study employed latent growth mixture modeling to discern distinct trajectories of loneliness using data collected at 2-year intervals from age 7-17 years (N = 586) and examine whether measures taken at age 5 years were good predictors of group membership. Four loneliness trajectory classes were identified: (1) low stable (37% of the sample), (2) moderate decliners (23%), (3) moderate increasers (18%), and (4) relatively high stable (22%). Predictors at age 5 years for the high stable trajectory were low trust beliefs, low trusting, low peer acceptance, parent reported negative reactivity, an internalizing attribution style, low self-worth, and passivity during observed play.

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Caring for adolescents with congenital heart disease requires attention to physical health but also to psychosocial functioning. Identifying how such psychosocial variables influence one another over time is important for designing health care strategies. The present study examined how depressive symptoms, loneliness, paternal and maternal support, and quality of life predicted one another.

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Although loneliness is a common problem across late adolescence, its developmental course has not been investigated in depth in this period of life. The present study aims to fill this gap by means of a five-wave cohort-sequential longitudinal study spanning ages 15 to 20 (N = 389). Both variable-centered (i.

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Coping strategies and identity processes are hypothesized to influence one another over time. This three-wave longitudinal study (N = 458; 84.9% women) examined, for the first time, how and to what extent identity processes (i.

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