Mental health apps within the healthcare system: associations with stigma and mental health literacy.

BACKGROUND: Mental health apps (MHA) as a new form of self-help have gained popularity over the last years. Tentative evidence has suggested that MHA might also present a first step into the help-seeking process, because their anonymity circumvents stigma. Using MHA might also increase mental health literacy and reduce stigma through psychoeducation, which could encourage formal help-seeking. To date, it remains unclear how MHA usage relates to stigma, mental health literacy, and utilization of professional help within the public healthcare system. METHODS: We conducted a cross-sectional survey with N = 1,263 individuals from the general population (mean age 32.56 ± 11.51, 58.2% female) and employed structural equation modeling to investigate associations between stigma (against individuals with psychological disorders and against help-seeking), mental health literacy, MHA usage, and service utilization within the public healthcare system for mental health problems. RESULTS: MHA usage is high within the general population (40.5% of participants). Results indicate that higher stigma against help-seeking is associated with and increased likelihood of MHA usage, which in turn is positively associated with increased likelihood of service utilization. Symptoms of psychological disorder were associated with higher likelihood of service utilization, but not MHA usage. CONCLUSIONS: It can be concluded that MHA appeal especially to individuals with higher stigma against help-seeking and therefore might provide an opportunity to reach underserviced individuals. At the current time, MHA usage appears to take place mostly in a preventative manner or as a supplement to treatment. Better integration into the public healthcare system might help to exploit both preventative and interventional benefits of MHA.

Indicated Prevention for Children Screened in Routine Health Care: Effectiveness of a Social Skills Program on Social Anxiety and Depressive Symptoms.

Social anxiety is common in childhood and potentially transitions into clinical disorders including depression. The present study aimed to examine the effectiveness of an indicated prevention program for children screened in routine care. Data came from the PROMPt project, a prospective implementation study (10/2018-09/2022) that explored a novel care chain, starting with screening with the Strengths and Difficulties Questionnaire (SDQ) as part of regular health check-ups, followed by indicated assignment and participation in a prevention program. Questionnaires assessing anxiety and depression symptoms were administered shortly after screening or before program participation (T0), six months after screening or after program participation (T1) and at a follow-up, six months after T1 (T2). Children who participated in a group cognitive-behavioral social skills program (TT; n = 145) were compared using mixed model analyses with non-participating children who were either screened as normal (NOR; n = 894) or refused program participation despite indication (NoTT; n = 67). TT scores improved from T0 to T1 compared to NOR and NoTT (anxiety ß = -0.71 and ß = -0.71, social anxiety ß = -0.46 and ß = -0.52, depression ß = -0.52 and ß = -0.73). Improvement was maintained at T2. Moderation analyses showed a trend toward greater benefit for participants with higher baseline scores. Indicated prevention can improve anxiety and depression symptoms in children identified by screening in routine care. Systematic screening and targeted prevention may positively affect mental health of children on a population level.

Subclinical patterns of disordered eating behaviors in the daily life of adolescents and young adults from the general population.

BACKGROUND: Disordered eating behaviors (DEBs), a risk factor for the development of eating disorders (EDs), are prevalent in young people and different DEBs frequently co-occur. Previous studies on DEB-patterns have largely used traditional retrospective questionnaires to assess DEBs. In addition, most previous studies did not specifically exclude individuals with clinical EDs, which limits current knowledge concerning purely subclinical patterns of DEBs. In the present study, we aimed to explore phenotypes and group sizes of subclinical patterns of DEBs reported in everyday life via smartphone-based ecological momentary assessment (EMA) in adolescents and young adults from the general population without lifetime EDs. In secondary analyses, we further aimed to investigate whether DEB-patterns would be associated with additional previously identified risk factors for ED-development. METHODS: EMA was conducted in a community sample of 14-21-year-olds from Dresden, Germany, over four days for up to eight times a day and covered engagement in four DEBs: skipping eating, restrained eating, eating large amounts of food, and loss-of-control eating. Data were analyzed from N = 966 individuals without lifetime EDs with an EMA compliance rate of at least 50% (81.9% of the total sample; average compliance: 84.6%). Latent profile analyses were performed to identify subclinical patterns of DEBs, stratified by sex. Associations between symptomatic profiles and ED-risk factors were tested via regression analyses. RESULTS: Based on theoretical deliberations, statistical indices, interpretability, and parsimony, a three-profile solution, namely no DEBs, high-mixed DEBs, and low-mixed DEBs, was selected for both sexes. Both symptomatic profiles in both sexes were associated with more unfavorable manifestations in additional ED risk factors compared to the no DEBs profile, with the highest number of associations being observed in the female high-mixed profile. CONCLUSIONS: The present findings suggest that problematic manifestations of DEBs in young people may occur even in the absence of an ED diagnosis and that they are associated with additional risk factors for EDs, warranting increased efforts in targeted prevention, early identification and intervention in order to counteract symptom progression.

Cortical and Subcortical Brain Alterations in Specific Phobia and Its Animal and Blood-Injection-Injury Subtypes: A Mega-Analysis From the ENIGMA Anxiety Working Group.

OBJECTIVE: Specific phobia is a common anxiety disorder, but the literature on associated brain structure alterations exhibits substantial gaps. The ENIGMA Anxiety Working Group examined brain structure differences between individuals with specific phobias and healthy control subjects as well as between the animal and blood-injection-injury (BII) subtypes of specific phobia. Additionally, the authors investigated associations of brain structure with symptom severity and age (youths vs. adults). METHODS: Data sets from 31 original studies were combined to create a final sample with 1,452 participants with phobia and 2,991 healthy participants (62.7% female; ages 5-90). Imaging processing and quality control were performed using established ENIGMA protocols. Subcortical volumes as well as cortical surface area and thickness were examined in a preregistered analysis. RESULTS: Compared with the healthy control group, the phobia group showed mostly smaller subcortical volumes, mixed surface differences, and larger cortical thickness across a substantial number of regions. The phobia subgroups also showed differences, including, as hypothesized, larger medial orbitofrontal cortex thickness in BII phobia (N=182) compared with animal phobia (N=739). All findings were driven by adult participants; no significant results were observed in children and adolescents. CONCLUSIONS: Brain alterations associated with specific phobia exceeded those of other anxiety disorders in comparable analyses in extent and effect size and were not limited to reductions in brain structure. Moreover, phenomenological differences between phobia subgroups were reflected in diverging neural underpinnings, including brain areas related to fear processing and higher cognitive processes. The findings implicate brain structure alterations in specific phobia, although subcortical alterations in particular may also relate to broader internalizing psychopathology.

[Implementation of a novel form of care for the early detection and prevention of emotional and behavioral problems in children in the pediatric setting: Qualitative interviews with pediatricians, practice staff and parents]. / Implementierung einer neuen Versorgungsform zur Früherkennung und Prävention emotionaler und Verhaltensauffälligkeiten bei Kindern im kinderärztlichen Setting: Qualitative Interviews mit Kinderärzt*innen, Praxispersonal und Sorgeberechtigten.

AIM OF THE STUDY: Evaluation of the implementation of a standardized screening using the Strengths and Difficulties Questionnaire (SDQ) as part of the routine pediatric health check-ups in the Dresden area (Germany) in order to detect emotional and behavioral problems (EBPs) in children early and allocate them to indicated preventive programs and/or to further counselling and treatment services. METHODS: 1.) Semi-structured interviews were performed with participating pediatricians (n=4), practice staff (n=4) and custodians of screened children (n=17) and subjected to content analysis regarding feasibility, advantages and disadvantages of the screening and the targeted allocation, as well as barriers and facilitators of using the screening and the preventive programs and further services. 2.) A self-developed questionnaire survey (descriptive analysis: means and frequencies) was conducted among pediatricians (n=34/99) to inquire about the implementation of the SDQ screening regarding feasibility, advantages, disadvantages and necessary conditions for a potential adoption of the screening to standard health services. RESULTS: In the interviews, the pediatricians and practice staff reported that the SDQ screening embedded in routine pediatric health check-ups was simple and could be carried out in a few minutes. The screening helped to identify and address possible EBPs in children and to recommend a targeted service. Apart from the expenditure of time, no disadvantages were mentioned. As expected, parent-related (e.g. fears, attitudes and trust in the pediatrician), child-related (does not want to reveal any information about him- or herself , attitude and motivation), service provider-related (presentation of services), organizational (necessary signatures, financing, waiting time) and service-related (duration, costs, venue, designation) factors influenced the families' use of the screening and further services. Interviewed custodians whose child participated in an indicated preventive program within the project (n=11) would recommend the SDQ screening and preventive program to other families. In the questionnaire survey 28/31 pediatricians "completely" or "rather" agreed on a 5-point Likert scale that the SDQ screening and targeted allocation should be included in standard pediatric care. DISCUSSION: The use of the SDQ, which is one of the most widely used and, despite its brevity, most valid screening instruments for the early detection of EBPs, in routine pediatric health check-ups and the targeted allocation of further health services represent a feasible approach to the early identification and clarification of EBPs in children as well as their allocation to indicated preventive services. CONCLUSION: An adoption of the novel form of care (SDQ screening and targeted allocation to indicated preventive programs and further services) to standard pediatric care unfolds its benefits if preventive and care services for EBPs in children are made available nationwide.

Social Interactions in Everyday Life of Socially Anxious Adolescents: Effects on Mental State, Anxiety, and Depression.

Unfavorable interpersonal behavior in social anxiety disorder (SAD) contributes to the maintenance of the disorder and may also be related to the development of secondary depression. Since there is limited research on daily life behavior in SAD, this study aimed to describe social interaction behavior and analyze the effect of positive interactions on depression, anxiety, and mental state. Data were obtained from the Behavior and Mind Health study (11/2015-12/2016), an epidemiological cohort study of adolescents and young adults (n = 1,180, aged 14-21 years) from Dresden, Germany. Interpersonal behavior, current mental state, anxiety, and depression were assessed eight times per day over four days using smartphone-based ecological momentary assessments. The analyzed subsample consisted of n = 723 participants, comparing 12-month SAD (n = 60) and healthy controls (HC; n = 663). The interaction behavior of participants with SAD did not differ substantially from that of HC in terms of frequency of social interactions, type of interaction partner, and time spent communicating, although they reported fewer real-life interaction partners (SAD: M = 2.49, SD = 4.78; HC: M = 3.18, SD = 6.43; F(17,044) = 23.92, p < 0.001). When comparing mental state, anxiety, and depression after interactions with familiar people to no interaction, no differences were found between SAD and HC. However, interactions with unfamiliar people negatively affected depressive symptoms in individuals with SAD (b = 0.53; SE = 0.25; 95%CI: 0.04-1.03; p = 0.036). In adolescents with SAD, social situations with unfamiliar people seem to be processed in a dysfunctional way, contributing to increased depressive mood in everyday life. This is particularly interesting given the high rate of secondary depression in SAD.

Tension and disordered eating behaviors in the daily lives of adolescents and young adults from the general population: Associations and moderating role of trait emotion regulation.

Experiences of tension and difficulties in emotion regulation have been linked to eating pathology in clinical samples and are targeted in respective treatment approaches. The present study aimed to investigate the impact of tension on engagement in disordered eating behaviors (DEBs) and potential moderating effects of trait emotion regulation in young people from the general population. A subsample of 971 adolescents and young adults from an epidemiological cohort study reported on levels of tension and four different DEBs (skipping eating, restrained eating, eating large amounts of food, loss-of-control-eating) via ecological momentary assessment (EMA), as well as on trait emotion regulation via questionnaire. In multilevel models, momentary tension did not predict levels of subsequent DEBs. However, higher average levels of tension across the EMA period predicted higher levels of all DEBs. No interactions with emotion regulation emerged. Individuals experiencing overall higher levels of tension appear to be more prone to engaging in DEBs.

[Indicative prevention programs for mental health promotion in preschool and primary school age: Willingness of pediatricians and families to participate in an innovative care chain]. / Indikative Präventionsprogramme zur Förderung der seelischen Gesundheit im Vor- und Grundschulalter: Teilnahmebereitschaft von Kinderärzt*innen und Familien an einer innovativen Versorgungskette.

BACKGROUND: Mental health problems usually have their onset in childhood. Undiagnosed, they may progress into mental disorders. Despite their effectiveness, existing preventive programs have been rarely used. We aimed to examine to what extent the establishment of a care chain can identify children at high risk at an early stage and assign them to preventive interventions. In addition, prevention program participation was assessed. METHODS: In a prospective implementation study, the Strengths and Difficulties Questionnaire was administered as a screening instrument to families during regular pediatric health examinations (U9-U11, child age 5-10 years). Families received feedback directly from the pediatrician, and in the case of borderline abnormal emotional or behavioral problems, a recommendation for an indicative prevention program. Program indication was additionally determined in an entry examination prior to program participation. RESULTS: In the area of Dresden (Germany), n = 46 (38.7%) pediatricians participated in the project. In n = 28 pediatric practices, n = 3231 (86.4%) families participated in the screening and n = 864 (26.7%) children received a prevention recommendation. Of the families, n = 118/864 (13.7%) self-registered for the prevention programs, n = 215/624 (35.5%) showed interest after being contacted by the study teamn. Through other pathways, n = 139 families requested participation. Clinical evaluation interviews to assess prevention indication were conducted in n = 337 children (n = 461; via all entry pathways). Finally, n = 237 (n = 337) children participated in an indicated prevention program. CONCLUSION: Expanding screening to mental health problems during regular health checkups is feasible, useful, and widely accepted. In order to implement a care chain, a supply structure should be established to enable referral to and uptake of preventive interventions.

The Association Between Childhood Maltreatment and Body (dis)satisfaction in Adolescents and Young Adults from the General Population.

Adolescents with a history of childhood maltreatment are vulnerable to body dissatisfaction and associated psychopathology such as eating disorders. The aim of this study was to expand the understanding of the association between childhood maltreatment and body dissatisfaction in adolescents and young adults. In an epidemiological cohort study, N = 1,001 participants aged 14-21 years from Dresden, Germany, completed self-report measures on childhood maltreatment, body image, and self-esteem. Lifetime mental disorders were assessed in standardized clinical interviews. Data analyses included multiple regression and mediation analyses. More than one-third of the participants reported experiences of childhood maltreatment (37.4%), in which emotional neglect and abuse were the most frequent subtypes. Individuals with a history of childhood maltreatment showed significantly less satisfaction with their physical appearance than participants without such adverse experiences. In a single mediator model, self-esteem emerged as potential mediator in the association between child maltreatment and body (dis)satisfaction. Experiences of childhood maltreatment may be considered as risk factor for the development of body dissatisfaction in adolescents, and the role of potential mediator variables such as self-esteem warrants further prospective research.

Temporal associations between experiential avoidance and disordered eating behaviors in adolescents and young adults: findings from an epidemiological cohort study with ecological momentary assessment.

PURPOSE: Previous studies linking experiential avoidance (EA) and eating pathology have largely relied on single measurements based on traditional retrospective questionnaires. Taking advantage of available repeated assessments of EA and disordered eating behaviors (DEBs) in the everyday lives of young people from an epidemiological cohort, we aimed to investigate ecologically valid temporal associations between these constructs. METHODS: A random population sample of N = 1180 14-21-year-olds from Dresden, Germany, participated at baseline (2015/2016). As part of smartphone-based ecological momentary assessment (EMA), participants reported on engagement in EA and four DEBs (skipping eating, eating large amounts of food, loss-of-control eating, and restrained eating) up to eight times per day for four days. Multilevel modeling of concurrent and time-lagged associations between EA and DEBs, was conducted among those with at least 50% EMA-compliance (n = 1069). RESULTS: EA was associated with higher concurrent levels of all four types of concurrent DEBs. In addition, EA significantly predicted subsequent levels of restrained eating. Only loss-of-control eating significantly predicted subsequent EA, and this effect depended on the timespan between consecutive assessments. When this timespan was short, higher Loss-of-control eating predicted lower subsequent EA, while it predicted higher subsequent EA when the timespan was longer. CONCLUSION: The present findings suggest that EA is temporally closely linked to greater engagement in DEBs, supporting theoretical assumptions that DEBs may serve an attempted avoidance function in the context of unpleasant inner experiences. Future studies may benefit from examining samples with more pronounced eating pathology. LEVEL OF EVIDENCE: Level IV: Evidence obtained from multiple time series with or without the intervention, such as case studies.

Ecological momentary assessment and applied relaxation: Results of a randomized indicated preventive trial in individuals at increased risk for mental disorders.

Applied Relaxation (AR) is an established behavioral mental health intervention, but its efficacy in real life contexts remains unclear. Using randomized controlled trial data, we examined whether AR can effectively reduce mental health problems in daily life. A sample of 277 adults with increased psychopathological symptoms but without 12-month DSM-5 mental disorders at study entry was randomly assigned to an intervention group receiving AR training (n = 139) and an assessment-only control group (n = 138). Ecological momentary assessments were used to assess psychological outcomes in daily life over a period of seven days at baseline, post, and 12-month follow-up, respectively. Multilevel analyses indicated that all psychopathological symptoms decreased more in the intervention group than in the control group from baseline to post (range ß = -0.31 for DASS-depression to ß = -0.06 for PROMIS-anger). However, from post to follow-up, psychopathological symptoms decreased more in the control group than in the intervention group, so that only the intervention effects for PROMIS-depression (ß = -0.10) and PROMIS-anger (ß = -0.09) remained until follow-up. Moreover, positive affect (ß = 0.19), internal control beliefs (ß = 0.15), favorable coping (ß = 0.60), and unfavorable coping (ß = -0.41) improved more in the intervention group than in the control group, and these effects were mostly maintained in the long term. Some effects were stronger among women, older individuals, and individuals with higher initial symptoms. These findings suggest that AR can effectively reduce mental health problems in daily life. Trial registration. The trial has been registered at ClinicalTrials.gov (NCT03311529).

Volume of subcortical brain regions in social anxiety disorder: mega-analytic results from 37 samples in the ENIGMA-Anxiety Working Group.

There is limited convergence in neuroimaging investigations into volumes of subcortical brain regions in social anxiety disorder (SAD). The inconsistent findings may arise from variations in methodological approaches across studies, including sample selection based on age and clinical characteristics. The ENIGMA-Anxiety Working Group initiated a global mega-analysis to determine whether differences in subcortical volumes can be detected in adults and adolescents with SAD relative to healthy controls. Volumetric data from 37 international samples with 1115 SAD patients and 2775 controls were obtained from ENIGMA-standardized protocols for image segmentation and quality assurance. Linear mixed-effects analyses were adjusted for comparisons across seven subcortical regions in each hemisphere using family-wise error (FWE)-correction. Mixed-effects d effect sizes were calculated. In the full sample, SAD patients showed smaller bilateral putamen volume than controls (left: d = -0.077, pFWE = 0.037; right: d = -0.104, pFWE = 0.001), and a significant interaction between SAD and age was found for the left putamen (r = -0.034, pFWE = 0.045). Smaller bilateral putamen volumes (left: d = -0.141, pFWE < 0.001; right: d = -0.158, pFWE < 0.001) and larger bilateral pallidum volumes (left: d = 0.129, pFWE = 0.006; right: d = 0.099, pFWE = 0.046) were detected in adult SAD patients relative to controls, but no volumetric differences were apparent in adolescent SAD patients relative to controls. Comorbid anxiety disorders and age of SAD onset were additional determinants of SAD-related volumetric differences in subcortical regions. To conclude, subtle volumetric alterations in subcortical regions in SAD were detected. Heterogeneity in age and clinical characteristics may partly explain inconsistencies in previous findings. The association between alterations in subcortical volumes and SAD illness progression deserves further investigation, especially from adolescence into adulthood.

Hair androgen concentrations and depressive disorders in adolescents from the general population.

Although the link between androgens and depression is well established in adults, the effects of cofactors on this association are less clearly understood, particularly in youth. Epidemiological cohort study of adolescents in Dresden, Germany. Analyses comprised data of 985 individuals assessed at baseline and of 512 individuals at 1-year follow-up. We investigated multivariable regression models for cross-sectional and longitudinal associations of hair testosterone, dehydroepiandrosterone (DHEA), and their cortisol ratios with 12-month diagnoses of major depressive disorder (MDD) and MDD without any anxiety disorder assessed with standardized diagnostic interview (DIA-X-5), and with dimensional depression scores (PHQ-9, PROMIS), separately for males and females. The potential moderating effect of social support was determined. Cross-sectional analyses yielded inverse associations of testosterone and DHEA with MDD and MDD without any anxiety disorders in males. In cross-sectional and longitudinal analyses, baseline ratio cortisol/DHEA was significantly, inversely associated to PROMIS-depression in males. Only cross-sectional associations for ratio cortisol/DHEA and PROMIS-depression remained significant after Bonferroni-Holm correction. No robust associations were observed in female participants. Social support exerted no consistent moderating effect on the investigated association. The present observational cohort study showed no consistent association of hair androgen concentrations with depressive disorders in adolescents. However, findings provide some support for the association between the cortisol/DHEA ratio and depression in males. Longitudinal research designs in large samples are needed to understand the interplay between androgens, depression, and developmental and social factors in youth.

Dynamics of affect, cognition and behavior in a general population sample of adolescents and young adults with current and remitted anxiety disorders: An Ecological Momentary Assessment study.

BACKGROUND: Measures of dynamic changes in affect/emotions (variability, instability, inertia) have been linked to anxiety disorders (AD). We examine dynamics in affect, cognition and behavior in youth with current and remitted AD. METHODS: Mental disorders were assessed in a general population sample (N = 1180, age 14-21; Dresden, Germany) using standardized interview. Ecological Momentary Assessment of real-life affect, cognition and behavior took place eight times/day for four days. RESULTS: Individuals with current AD (n = 65) compared to healthy controls (HC, n = 531) revealed heightened variability of anxious and manic symptomatology, experiential avoidance, optimism and positive thoughts. Remitted AD (n = 52) showed lower variability of anxious and manic symptomatology and positive thoughts compared to current AD, while no differences were found compared to HC. Current AD and HC differed significantly in instability. Remitted AD showed lower instability of all constructs except for anger than current AD, and higher instability on all constructs except for positive and negative thoughts compared to HC. Current AD showed higher inertia of anger and negative thoughts than HC, and less inertia of positive thoughts than remitted AD. DISCUSSION: AD in youths is particularly linked to higher variability and instability of intertwined emotion-related experiences that partly persist after remission, informing emotion regulation models and interventions.

Efficacy of Applied Relaxation as indicated preventive intervention in individuals at increased risk for mental disorders: A randomized controlled trial.

The objective was to examine the efficacy of Applied Relaxation (AR) as indicated preventive intervention to reduce psychopathological symptoms and prevent incident mental disorders. In a parallel-group randomized controlled trial, N = 277 adults with elevated tension/distress, anxiety, or depressive symptomatology (Depression-Anxiety-Stress Scale, DASS-21) but no 12-month DSM-5 diagnosis of any mental disorder assessed via standardized interview (DIA-X-5) were randomized to an intervention group (IG; n = 139) receiving group-based AR training, or an assessment-only control group (CG, n = 138). Self-report questionnaires at baseline, post (immediately after the 10 week intervention or a similar time frame in CG) and 12-month follow-up included the DASS-21 as primary outcome measure of intervention efficacy. Incident subthreshold and threshold mental disorders were assessed via DIA-X-5 at 12-month follow-up as primary outcome of prevention efficacy. Intervention and prevention effects were examined on an intent-to-treat basis with missing data replaced using chained multiple imputation. Mixed-model analyses revealed accelerated symptom improvement in IG versus CG with a medium baseline-to-post between-group effect size (d = 0.59, 95%CI: 0.36-0.82). Logistic regression analysis revealed a significantly lower incidence rate for (sub-)threshold mental disorders until 12-month follow-up in IG (34.7%) versus CG (49.3%; Odds Ratio: 0.54, 95%CI: 0.31-0.92, Risk Ratio: 0.70, 95%CI: 0.51-0.96, Risk Difference = -0.15, 95%CI: -0.28 to -0.02). Group-based AR as a promising indicative preventive intervention should be tested in long-term studies and relative to a credible alternative intervention to assure that the intervention effects are not entirely due to demand characteristics, expectancies, or non-specific effects.

Depressive disorders are associated with increased peripheral blood cell deformability: a cross-sectional case-control study (Mood-Morph).

Pathophysiological landmarks of depressive disorders are chronic low-grade inflammation and elevated glucocorticoid output. Both can potentially interfere with cytoskeleton organization, cell membrane bending and cell function, suggesting altered cell morpho-rheological properties like cell deformability and other cell mechanical features in depressive disorders. We performed a cross-sectional case-control study using the image-based morpho-rheological characterization of unmanipulated blood samples facilitating real-time deformability cytometry (RT-DC). Sixty-nine pre-screened individuals at high risk for depressive disorders and 70 matched healthy controls were included and clinically evaluated by Composite International Diagnostic Interview leading to lifetime and 12-month diagnoses. Facilitating deep learning on blood cell images, major blood cell types were classified and morpho-rheological parameters such as cell size and cell deformability of every individual cell was quantified. We found peripheral blood cells to be more deformable in patients with depressive disorders compared to controls, while cell size was not affected. Lifetime persistent depressive disorder was associated with increased cell deformability in monocytes and neutrophils, while in 12-month persistent depressive disorder erythrocytes deformed more. Lymphocytes were more deformable in 12-month major depressive disorder, while for lifetime major depressive disorder no differences could be identified. After correction for multiple testing, only associations for lifetime persistent depressive disorder remained significant. This is the first study analyzing morpho-rheological properties of entire blood cells and highlighting depressive disorders and in particular persistent depressive disorders to be associated with increased blood cell deformability. While all major blood cells tend to be more deformable, lymphocytes, monocytes, and neutrophils are mostly affected. This indicates that immune cell mechanical changes occur in depressive disorders, which might be predictive of persistent immune response.

Applied relaxation and cortisol secretion: findings from a randomized controlled indicated prevention trial in adults with stress, anxiety, or depressive symptoms.

Previous research has shown that relaxation interventions can reduce distress, anxiety, and depression. The exact mechanisms that underlie the efficacy of relaxation interventions remain unresolved. This study aimed to investigate whether applied relaxation (AR) leads to changes in cortisol secretion and whether these effects mediate fewer symptoms due to AR. Data come from a randomized controlled preventive interventional trial (N = 277) with elevated tension/distress, anxiety, or depressive symptomatology. Participants were randomized to an intervention group (IG; n = 139, received AR training), or a non-interventional control group (CG, n = 138). Psychopathological symptoms were assessed with DASS-21 and diagnoses of mental disorders via DIA-X-5. Cortisol was measured as short-term index in saliva (six times/d for 2 d at pre-, post-, and follow-up [FU] assessment) and long-term index in hair samples (once at pre-assessment and FU, respectively). Data were analyzed as pre-specified secondary analyses of the randomized controlled trial (RCT) on completer basis (n = 134 CG, n = 102 IG), using multivariable-adjusted linear regression models and mediation analyses (the DASS-21 change in the IG vs. CG with cortisol (area under the curve [AUC]) as mediator). From pre- to post-assessment, total daily salivary cortisol (AUC) decreased more strongly in the IG vs. CG (ß-coefficient: -13.83, 95% confidence interval [CI]: -26.85 to -0.81), but was rendered non-significant when adjusting for pre-assessment AUC. This effect was not found for the cortisol awakening response (CAR) or hair cortisol. There was no evidence for a mediation of cortisol (AUC). These findings provide little support for the idea that cortisol reductions explain the beneficial effects of AR on mental health.

Progression of externalizing disorders into anxiety disorders: Longitudinal transitions in the first three decades of life.

BACKGROUND: There is a notable comorbidity between externalizing disorders and anxiety disorders, which may be explained by the co-occurrence of two prevalent early-onset disorders, by shared vulnerability and risk factors, or as evidence that one disorder group might be causally related to the other. AIM: To investigate the longitudinal trajectories of externalizing disorders, their interplay with anxiety disorders, and putative predictors for symptom progression in youth. METHODS: 1053 adolescents (14-17 years) from the general population were assessed at baseline and prospectively at 2, 4, and 10-year follow-up using a standardized interview of mental disorders (DIA-X/M-CIDI) to assess "early" (oppositional-defiant disorder, conduct disorder, ADHD) and "late" (antisocial behavior, substance use disorders) externalizing disorders as well as anxiety disorders. Longitudinal associations and predictors for symptom progression were examined using Kaplan-Meier-analyses. RESULTS: Lifetime prevalence of early externalizing disorders were 9.1% and 6.4% among those with and without any anxiety disorder. A late externalizing disorder was reported by 50.3% of those with an early externalizing disorder and in 26.6% of those with any anxiety disorder. Both early (HR: 1.5, 95%CI: 1.0-2.3) and late externalizing disorders (HR: 2.1, 95%CI: 1.7-2.6) were associated with incident anxiety disorders. Higher parental rejection, lower volitional inhibition, and higher volitional avoidance predicted incident anxiety disorders among those with early externalizing disorders. DISCUSSION: Early externalizing disorders likely follow a homotypic continuity (to late externalizing disorders) and/or a heterotypic continuity to anxiety disorders, and thus appear as a useful target for prevention and early intervention.