Publications by authors named "Nicolas Arnaud"

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Prax Kinderpsychol Kinderpsychiatr

November 2024

Mindfulness in the Context of Addiction Disorders in Childhood and Adolescence: Overview of the Current State of Research Adolescents are at an increased risk of developing addictive disorders due to a variety of risk factors. Addictive behaviour is characterised by a limited ability to control one's own behaviour. The potential of improved self-regulation through mindfulness-based interventions is increasingly being investigated in connection with addictive behaviour.

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  • Chronic airway inflammation can lead to conditions like COPD and asthma, causing issues such as goblet cell hyperplasia and obstructed airflow in chronic bronchitis.
  • Traditional animal testing methods are being replaced by in vitro three-dimensional cultures, but these often miss important characteristics of the human airway structure.
  • The Bronchus-on-a-Chip (BoC) system was developed to create a more accurate model of bronchial epithelium, successfully mimicking human responses to inflammation and improving the testing of chronic airway conditions.
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Background: During adolescence, substance use and digital media exposure usually peak and can become major health risks. Prevention activities are mainly implemented in the regular school setting, and youth outside this system are not reached. A mobile app ("Meine Zeit ohne") has been developed specifically for vocational students and encourages participants to voluntarily reduce or abstain from a self-chosen addictive behavior including the use of a substance, gambling, or a media-related habit such as gaming or social media use for 2 weeks.

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Cannabis use disorder (CUD) is the most frequent reason for psychiatric inpatient substance use disorder (SUD) treatment among 15-19-year-olds in Germany. Despite effective treatment programs, relapse rates remain high. Thus, existing multi-component programs (TAU) need to be enhanced with SUD-specific elements.

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Background: Even among minors, the use of psychotropic substances is widespread in Europe. Data on the use of tobacco, alcohol and cannabis are regularly reported in Germany, but data on problematic use are lacking. In the present study, established screening instruments were used to investigate the prevalence of problematic use of cigarettes, alcohol and cannabis among children and adolescents.

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Background: Mental health (MH) problems in youth are prevalent, burdening, and frequently persistent. Despite the existence of effective treatment, the uptake of professional help is low, particularly due to attitudinal barriers.

Objective: This study evaluated the effectiveness and acceptability of 2 video-based microinterventions aimed at reducing barriers to MH treatment and increasing the likelihood of seeking professional help in young people.

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Background: The aim of the current study was to assess the prevalence of the (problematic) consumption of alcohol, tobacco, and cannabis as well as the (problematic) use of social media, e‑products, computer games, and gambling among apprentices.

Method: Cross-sectional survey of 4591 apprentices at 17 vocational schools from Bavaria, Schleswig-Holstein, and Hamburg. Data was collected using questionnaires between March 2021 and April 2022.

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Background: Digital media-use disorders (DMUD) in adolescents are a rising phenomenon associated with psychological distress, comorbid mental disorders, and high burden on affected families. Since the ICD-11 introduced criteria for gaming disorder, these can now be transferred to describe additional DMUD associated with social media platforms and streaming services. Most evidence for effective treatments comes from cognitive-behavioral therapy (CBT).

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  • * Among the 1,449 surveyed adolescents, significant percentages reported engaging in risky sexual behaviors while under the influence, including 49.8% having sex while drunk or high, and a concerning 48.3% doing so without condoms.
  • * The findings suggest that high levels of binge drinking correlate with increased sexual risk, especially in young men, indicating the need for preventive programs to address both substance use and sexual safety together.
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Prenatal androgen exposure modulates the development of the brain, with lasting effects on its function and behavior over the infant's life span. Environmental factors during pregnancy, in particular maternal stress, have been shown to influence the androgen load of the unborn child. We here addressed the research gap on whether a mindfulness intervention or a pregnancy education administered to pregnant women more affects the androgen exposure of the unborn child (quantified by the proxies of second-to-fourth digit length ratio (2D:4D) and anogenital distance assessed one year after delivery and at delivery, respectively).

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Plant organ morphogenesis spans several orders of magnitude in time and space. Because of limitations in live-imaging, analysing whole organ growth from initiation to mature stages typically rely on static data sampled from different timepoints and individuals. We introduce a new model-based strategy for dating organs and for reconstructing morphogenetic trajectories over unlimited time windows based on static data.

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  • Adolescence is a crucial period for developing substance use disorders (SUDs), but data on these issues in Germany are limited, especially from youth samples.
  • A study surveying 4,001 German adolescents aged 12-18 found that 11.2% met criteria for at least one SUD, with alcohol use disorders being the most prevalent (10.1%).
  • Mindfulness was linked to lower rates of SUDs, while higher impulsivity and sensation-seeking traits were associated with increased substance use, highlighting important areas for youth intervention and prevention strategies.
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Vocational students are a risk group for problematic substance use and addictive behaviors. The study aim was to evaluate the effects of an app-based intervention on tobacco, e-cigarettes, alcohol, and cannabis use as well as gambling and digital media-related behaviors in the vocational school setting. A total of 277 classes with 4591 students (mean age 19.

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The vasculature system plays a critical role in inflammation processes in the body. Vascular inflammatory mechanisms are characterized by disruption of blood vessel wall permeability together with increased immune cell recruitment and migration. There is a critical need to develop models that fully recapitulate changes in vascular barrier permeability in response to inflammatory conditions.

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With recent progress in modeling liver organogenesis and regeneration, the lack of vasculature is becoming the bottleneck in progressing our ability to model human hepatic tissues in vitro. Here, we introduce a platform for routine grafting of liver and other tissues on an in vitro grown microvascular bed. The platform consists of 64 microfluidic chips patterned underneath a 384-well microtiter plate.

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Background: The most common substance use disorders in childhood and adolescence have to do with alcohol and cannabis. These disorders begin as early as puberty, are often accompanied by other mental disorders, and, if untreated, very frequently persist into adulthood.

Methods: This review is based on pertinent publications retrieved by a selective search in PubMed on substance use disorders in children and adolescents.

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Boundary domains delimit and organize organ growth throughout plant development almost relentlessly, building plant architecture and morphogenesis. Boundary domains display reduced growth and orchestrate development of adjacent tissues in a non-cell-autonomous manner. How these two functions are achieved remains elusive despite the identification of several boundary-specific genes.

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Background: Substance-related and addictive disorders are among the most common mental disorders in adolescence and young adulthood. Vocational school students are a risk group for problematic substance use and addictive behavior. However, the availability of evidence-based prevention concepts and programs is underdeveloped in the vocational school setting.

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Background: Addictive disorders are typically manifested during adolescence and have a high transmission rate into adulthood. When adulthood is reached the responsibility by the child and adolescent psychiatric care system ends and patients transition to adult psychiatry. A lack of supportive concepts and approaches to this transition can have detrimental effects on the long-term health of affected individuals.

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Use of Electronic Cigarettes (e-cigs) and e-Shishas by Children and Adolescents: Evidence Paper of the Joint Addiction Commission of the German Societies and Professional Associations of Child and Adolescent Psychiatry and Psychotherapy The particular risks associated with the consumption of electronic cigarettes (e-cigs) in children and adolescents are not sufficiently considered in the health policy discourse. The present article evaluates the current dissemination and consumption patterns of e-cigarettes as well as the health risks attached to children and adolescents. Based on data from current national and international studies, there has been a clear increase in the consumption of e-cigarettes over the past years.

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The timing of leaf emergence at the shoot apical meristem, or plastochron, is highly regulated in plants. Among the genes known to regulate the plastochron in Arabidopsis (Arabidopsis thaliana), KLUH (KLU), orthologous to the rice (Oryza sativa) PLASTOCHRON1, encodes the cytochrome P450 CYP78A5, and is thought to act through generation of a still unknown mobile signal. As klu mutants display not only a short plastochron but also a branching phenotype reminiscent of strigolactone (SL) mutants, we investigated whether KLU/CYP78A5 is involved in SL biosynthesis.

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Background: COVID-19 lockdown measures imposed extensive restrictions to public life. Previous studies suggest significant negative psychological consequences, but lack longitudinal data on population-based samples.

Aims: We aimed to prospectively identify increased psychological stress and associated risk factors in parent-child dyads.

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Advanced in vitro kidney models are of great importance to the study of renal physiology and disease. Kidney tubuloids can be established from primary cells derived from adult kidney tissue or urine. Tubuloids are three-dimensional multicellular structures that recapitulate tubular function and have been used to study infectious, malignant, metabolic, and genetic diseases.

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Disorders due to substance use or addictive behaviours in the ICD-11 This paper concerns the revised classification of Substance-Related and Addictive Disorders in the 11th edition of the International Classification of Diseases (ICD-11) of the World Health Organization. The revision of the ICD serves to reflect changes in the understanding and diagnosis of addictive disorders and the need to improve clinical applicability. Regarding substance-related and non-substance-related addictive disorders, considerable innovations were introduced compared to the previous version.

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