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1.
Lancet ; 402(10401): 545-554, 2023 Aug 12.
Artigo em Inglês | MEDLINE | ID: mdl-37414064

RESUMO

BACKGROUND: Transcranial direct current stimulation (tDCS) has been proposed as a feasible treatment for major depressive disorder (MDD). However, meta-analytic evidence is heterogenous and data from multicentre trials are scarce. We aimed to assess the efficacy of tDCS versus sham stimulation as an additional treatment to a stable dose of selective serotonin reuptake inhibitors (SSRIs) in adults with MDD. METHODS: The DepressionDC trial was triple-blind, randomised, and sham-controlled and conducted at eight hospitals in Germany. Patients being treated at a participating hospital aged 18-65 years were eligible if they had a diagnosis of MDD, a score of at least 15 on the Hamilton Depression Rating Scale (21-item version), no response to at least one antidepressant trial in their current depressive episode, and treatment with an SSRI at a stable dose for at least 4 weeks before inclusion; the SSRI was continued at the same dose during stimulation. Patients were allocated (1:1) by fixed-blocked randomisation to receive either 30 min of 2 mA bifrontal tDCS every weekday for 4 weeks, then two tDCS sessions per week for 2 weeks, or sham stimulation at the same intervals. Randomisation was stratified by site and baseline Montgomery-Åsberg Depression Rating Scale (MADRS) score (ie, <31 or ≥31). Participants, raters, and operators were masked to treatment assignment. The primary outcome was change on the MADRS at week 6, analysed in the intention-to-treat population. Safety was assessed in all patients who received at least one treatment session. The trial was registered with ClinicalTrials.gov (NCT02530164). FINDINGS: Between Jan 19, 2016, and June 15, 2020, 3601 individuals were assessed for eligibility. 160 patients were included and randomly assigned to receive either active tDCS (n=83) or sham tDCS (n=77). Six patients withdrew consent and four patients were found to have been wrongly included, so data from 150 patients were analysed (89 [59%] were female and 61 [41%] were male). No intergroup difference was found in mean improvement on the MADRS at week 6 between the active tDCS group (n=77; -8·2, SD 7·2) and the sham tDCS group (n=73; -8·0, 9·3; difference 0·3 [95% CI -2·4 to 2·9]). Significantly more participants had one or more mild adverse events in the active tDCS group (50 [60%] of 83) than in the sham tDCS group (33 [43%] of 77; p=0·028). INTERPRETATION: Active tDCS was not superior to sham stimulation during a 6-week period. Our trial does not support the efficacy of tDCS as an additional treatment to SSRIs in adults with MDD. FUNDING: German Federal Ministry of Education and Research.

2.
Artigo em Inglês | MEDLINE | ID: mdl-38407625

RESUMO

Transcranial direct current stimulation (tDCS) of the prefrontal cortex might beneficially influence neurocognitive dysfunctions associated with major depressive disorder (MDD). However, previous studies of neurocognitive effects of tDCS have been inconclusive. In the current study, we analyzed longitudinal, neurocognitive data from 101 participants of a randomized controlled multicenter trial (DepressionDC), investigating the efficacy of bifrontal tDCS (2 mA, 30 min/d, for 6 weeks) in patients with MDD and insufficient response to selective serotonin reuptake inhibitors (SSRI). We assessed whether active tDCS compared to sham tDCS elicited beneficial effects across the domains of memory span, working memory, selective attention, sustained attention, executive process, and processing speed, assessed with a validated, digital test battery. Additionally, we explored whether baseline cognitive performance, as a proxy of fronto-parietal-network functioning, predicts the antidepressant effects of active tDCS versus sham tDCS. We found no statistically significant group differences in the change of neurocognitive performance between active and sham tDCS. Furthermore, baseline cognitive performance did not predict the clinical response to tDCS. Our findings indicate no advantage in neurocognition due to active tDCS in MDD. Additional research is required to systematically investigate the effects of tDCS protocols on neurocognitive performance in patients with MDD.

3.
Eur Child Adolesc Psychiatry ; 33(2): 581-593, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36922435

RESUMO

Adolescent refugees and asylum seekers (ARAS) are highly vulnerable to mental health problems. Stepped care models (SCM) and culturally sensitive therapies offer promising treatment approaches to effectively provide necessary medical and psychological support. To our knowledge, we were the first to investigate whether a culturally sensitive SCM will reduce symptoms of depression and PTSD in ARAS more effectively and efficiently than treatment as usual (TAU). We conducted a multicentric, randomized, controlled and rater-blinded trial across Germany with ARAS between the ages of 14 to 21 years. Participants (N = 158) were stratified by their level of depressive symptom severity and then equally randomized to either SCM or TAU. Depending on their severity level, SCM participants were allocated to tailored interventions. Symptom changes were assessed for depression (PHQ) and PTSD (CATS) at four time points, with the primary end point at post-intervention after 12 weeks. Based on an intention-to-treat sample, we used a linear mixed model approach for the main statistical analyses. Further evaluations included cost-utility analyses, sensitivity analyses, follow-up-analyses, response and remission rates and subgroup analysis. We found a significant reduction of PHQ (d = 0.52) and CATS (d = 0.27) scores in both groups. However, there was no significant difference between SCM and TAU. Cost-utility analyses indicated that SCM generated greater cost-utility when measured as quality-adjusted life years compared to TAU. Subgroup analysis revealed different effects for the SCM interventions depending on the outcome measure. Although culturally sensitive, SCMs did not prove to be more effective in symptom change and represent a more cost-effective treatment alternative for mentally burdened ARAS. Our research contributes to the optimization of clinical productivity and the improvement of therapeutic care for ARAS. Disorder-specific interventions should be further investigated.


Assuntos
Refugiados , Transtornos de Estresse Pós-Traumáticos , Humanos , Adolescente , Adulto Jovem , Adulto , Transtornos de Estresse Pós-Traumáticos/psicologia , Refugiados/psicologia , Resultado do Tratamento , Avaliação de Resultados em Cuidados de Saúde , Custos de Cuidados de Saúde
4.
Int J Neuropsychopharmacol ; 26(1): 20-31, 2023 01 19.
Artigo em Inglês | MEDLINE | ID: mdl-36173403

RESUMO

BACKGROUND: Electroconvulsive therapy (ECT) is an effective treatment for patients suffering from depression. Yet the exact neurobiological mechanisms underlying the efficacy of ECT and indicators of who might respond best to it remain to be elucidated. Identifying neural markers that can inform about an individual's response to ECT would enable more optimal treatment strategies and increase clinical efficacy. METHODS: Twenty-one acutely depressed inpatients completed an emotional working memory task during functional magnetic resonance imaging before and after receiving treatment with ECT. Neural activity was assessed in 5 key regions associated with the pathophysiology of depression: bilateral dorsolateral prefrontal cortex and pregenual, subgenual, and dorsal anterior cingulate cortex. Associations between brain activation and clinical improvement, as reflected by Montgomery-Åsberg Depression Rating Scale scores, were computed using linear regression models, t tests, and Pearson correlational analyses. RESULTS: Significant neurobiological prognostic markers or changes in neural activity from pre- to post ECT did not emerge. CONCLUSIONS: We could not confirm normalization effects and did not find significant neural markers related to treatment response. These results demonstrate that the search for reliable and clinically useful biomarkers for ECT treatment remains in its initial stages and still faces challenges.


Assuntos
Eletroconvulsoterapia , Humanos , Eletroconvulsoterapia/métodos , Resultado do Tratamento , Giro do Cíngulo/diagnóstico por imagem , Emoções , Imageamento por Ressonância Magnética
5.
Eur Arch Psychiatry Clin Neurosci ; 273(7): 1489-1499, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-36715751

RESUMO

Electroconvulsive therapy (ECT) is one of the most effective treatments for treatment-resistant depression. However, the underlying mechanisms of action are not yet fully understood. The investigation of depression-specific networks using resting-state fMRI and the relation to differential symptom improvement might be an innovative approach providing new insights into the underlying processes. In this naturalistic study, we investigated the relationship between changes in resting-state functional connectivity (rsFC) and symptom improvement after ECT in 21 patients with treatment-resistant depression. We investigated rsFC before and after ECT and focused our analyses on FC changes directly related to symptom reduction and on FC at baseline to identify neural targets that might predict individual clinical responses to ECT. Additional analyses were performed to identify the direct relationship between rsFC change and symptom dimensions such as sadness, negative thoughts, detachment, and neurovegetative symptoms. An increase in rsFC between the left amygdala and left dorsolateral prefrontal cortex (DLPFC) after ECT was related to overall symptom reduction (Bonferroni-corrected p = 0.033) as well as to a reduction in specific symptoms such as sadness (r = 0.524, uncorrected p = 0.014), negative thoughts (r = 0.700, Bonferroni-corrected p = 0.002) and detachment (r = 0.663, p = 0.004), but not in neurovegetative symptoms. Furthermore, high baseline rsFC between the left amygdala and the right frontal pole (FP) predicted treatment outcome (uncorrected p = 0.039). We conclude that changes in FC in regions of the limbic-prefrontal network are associated with symptom improvement, particularly in affective and cognitive dimensions. Frontal-limbic connectivity has the potential to predict symptom improvement after ECT. Further research combining functional imaging biomarkers and a symptom-based approach might be promising.


Assuntos
Transtorno Depressivo Maior , Eletroconvulsoterapia , Humanos , Eletroconvulsoterapia/métodos , Depressão/diagnóstico por imagem , Depressão/terapia , Transtorno Depressivo Maior/terapia , Tonsila do Cerebelo/diagnóstico por imagem , Córtex Pré-Frontal/diagnóstico por imagem , Imageamento por Ressonância Magnética
6.
Soc Psychiatry Psychiatr Epidemiol ; 58(5): 757-768, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-36633630

RESUMO

BACKGROUND: Providing adequate living conditions for forcibly displaced people represents a significant challenge for host countries such as Germany. This study explores refugee mental health's reciprocal, dynamic relationship with post-migration living conditions and social support. METHODS: The study sample included 325 Arabic- or Farsi-speaking asylum seekers and refugees residing in Germany since 2014 and seeking mental health treatment. Associations between reported symptoms of post-traumatic stress and depression and the subjective quality of living conditions and perceived social support were analyzed using a two-level approach including multiple linear regression and network analyses. RESULTS: Post-migration quality of living conditions and perceived social support were significantly associated with negative mental health outcomes on both levels. In the network, both post-migration factors were negatively connected with overlapping symptoms of psychiatric disorders, representing potential target symptoms for psychological treatment. CONCLUSION: Post-migration quality of living conditions and social support are important factors for refugee mental health and should be targeted by various actors fostering mental well-being and integration.


Assuntos
Refugiados , Transtornos de Estresse Pós-Traumáticos , Humanos , Saúde Mental , Refugiados/psicologia , Condições Sociais , Transtornos de Estresse Pós-Traumáticos/psicologia , Apoio Social
7.
Clin Psychol Psychother ; 30(5): 1170-1178, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37291938

RESUMO

Childhood emotional maltreatment (CEM) is a risk factor for the pathogenesis of depressive disorders. However, it is not clear whether CEM is more strongly related to specific symptoms of depression and whether specific traits or cognitive states may mediate the association between CEM and depressive symptoms. In our cross-sectional study, including 72 patients with a current depressive episode, we investigated if CEM is specifically related to cognitive symptoms of depression. In addition, we evaluated whether CEM also influences the extent of rumination and hopelessness in adult depression. Using multiple regression analyses, we tested if CEM and rumination could predict cognitive symptoms and hopelessness. A structural equation model (SEM) was used to examine if rumination mediates the relationship between CEM and cognitive symptoms. Correlational analyses revealed that CEM was related to cognitive symptoms, rumination, and hopelessness. The regression analyses showed that only rumination was a significant predictor for cognitive symptoms and hopelessness, whereas CEM could not significantly predict the two constructs. SEM revealed that the association between CEM and cognitive symptoms in adult depression was mediated by rumination. Our results thereby suggest that CEM is a risk factor particularly for the development of cognitive symptoms as well as rumination and hopelessness in adult depression. However, the influence on cognitive symptomatology seems to be indirectly regulated by rumination. These findings may contribute to a better understanding of processes that promote depression, as well as provide guidance for more targeted treatment options.


Assuntos
Depressão , Emoções , Adulto , Humanos , Depressão/psicologia , Estudos Transversais , Afeto , Cognição
8.
Int J Neuropsychopharmacol ; 25(12): 1003-1013, 2022 12 12.
Artigo em Inglês | MEDLINE | ID: mdl-35948274

RESUMO

BACKGROUND: Growing evidence underscores the utility of ketamine as an effective and rapid-acting treatment option for major depressive disorder (MDD). However, clinical outcomes vary between patients. Predicting successful response may enable personalized treatment decisions and increase clinical efficacy. METHODS: We here explored the potential of pregenual anterior cingulate cortex (pgACC) activity to predict antidepressant effects of ketamine in relation to ketamine-induced changes in glutamatergic metabolism. Prior to a single i.v. infusion of ketamine, 24 patients with MDD underwent functional magnetic resonance imaging during an emotional picture-viewing task and magnetic resonance spectroscopy. Changes in depressive symptoms were evaluated using the Beck Depression Inventory measured 24 hours pre- and post-intervention. A subsample of 17 patients underwent a follow-up magnetic resonance spectroscopy scan. RESULTS: Antidepressant efficacy of ketamine was predicted by pgACC activity during emotional stimulation. In addition, pgACC activity was associated with glutamate increase 24 hours after the ketamine infusion, which was in turn related to better clinical outcome. CONCLUSIONS: Our results add to the growing literature implicating a key role of the pgACC in mediating antidepressant effects and highlighting its potential as a multimodal neuroimaging biomarker of early treatment response to ketamine.


Assuntos
Transtorno Depressivo Maior , Ketamina , Humanos , Giro do Cíngulo/metabolismo , Transtorno Depressivo Maior/diagnóstico por imagem , Transtorno Depressivo Maior/tratamento farmacológico , Antidepressivos/farmacologia , Antidepressivos/uso terapêutico , Ácido Glutâmico/metabolismo , Imageamento por Ressonância Magnética , Biomarcadores/metabolismo
9.
Psychosom Med ; 83(6): 579-591, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34213860

RESUMO

OBJECTIVE: Mindfulness-based interventions (MBIs) have been found to be a promising approach for the treatment of recurrent courses of depression. However, little is known about their neural mechanisms. This functional magnetic resonance imaging study set out to investigate activation changes in corticolimbic regions during implicit emotion regulation. METHODS: Depressed patients with a recurrent lifetime history were randomized to receive a 2-week MBI (n = 16 completers) or psychoeducation and resting (PER; n = 22 completers). Before and after, patients underwent functional magnetic resonance imaging while labeling the affect of angry, happy, and neutral facial expressions and completed questionnaires assessing ruminative brooding, the ability to decenter from such thinking, and depressive symptoms. RESULTS: Activation decreased in the right dorsolateral prefrontal cortex (dlPFC) in response to angry faces after MBI (p < .01, voxel-wise family-wise error rate correction, T > 3.282; 56 mm3; Montreal Neurological Institute peak coordinate: 32, 24, 40), but not after PER. This change was highly correlated with increased decentring (r = -0.52, p = .033), decreased brooding (r = 0.60, p = .010), and decreased symptoms (r = 0.82, p = .005). Amygdala activation in response to happy faces decreased after PER (p < .01, family-wise error rate corrected; 392 mm3; Montreal Neurological Institute peak coordinate: 28, -4, -16), whereas the MBI group showed no significant change. CONCLUSIONS: The dlPFC is involved in emotion regulation, namely, reappraisal or suppression of negative emotions. Decreased right dlPFC activation might indicate that, after the MBI, patients abstained from engaging in elaboration or suppression of negative affective stimuli; a putatively important mechanism for preventing the escalation of negative mood.Trial Registration: The study is registered at ClinicalTrials.gov (NCT02801513; 16/06/2016).


Assuntos
Regulação Emocional , Atenção Plena , Depressão/diagnóstico por imagem , Depressão/terapia , Emoções , Expressão Facial , Humanos , Imageamento por Ressonância Magnética , Córtex Pré-Frontal/diagnóstico por imagem
10.
Psychother Psychosom ; 90(6): 403-414, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34350902

RESUMO

INTRODUCTION: Self-Help Plus (SH+) is a group-based psychological intervention developed by the World Health Organization for managing stress. OBJECTIVE: To assess the effectiveness of SH+ in preventing mental disorders in refugees and asylum seekers in Western Europe. METHODS: We conducted a randomized controlled trial in 5 European countries. Refugees and asylum seekers with psychological distress (General Health Questionnaire score ≥3), but without a Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5) or ICD/10 diagnosis of mental disorder, as assessed with the Mini International Neuropsychiatric Interview (MINI), were randomized to SH+ or enhanced treatment as usual (ETAU). The primary outcome was the frequency of mental disorders with the MINI at 6 months. Secondary outcomes included the frequency of mental disorders at postintervention, self-identified problems, psychological symptoms, and other outcomes. RESULTS: Four hundred fifty-nine individuals were randomly assigned to SH+ or ETAU. For the primary outcome, we found no difference in the frequency of mental disorders at 6 months (Cramer V = 0.007, p = 0.90, RR = 0.96; 95% CI 0.52-1.78), while the difference significantly favored SH+ at after the intervention (secondary outcome, measured within 2 weeks from the last session; Cramer V = 0.13, p = 0.01, RR = 0.50; 95% CI 0.29-0.87). CONCLUSIONS: This is the first randomized indicated prevention study with the aim of preventing the onset of mental disorders in asylum seekers and refugees in Western Europe. As a prevention effect of SH+ was not observed at 6 months, but rather after the intervention only, modalities to maintain its beneficial effect in the long term need to be identified.


Assuntos
Transtornos Mentais , Angústia Psicológica , Refugiados , Transtornos de Estresse Pós-Traumáticos , Europa (Continente) , Humanos , Transtornos Mentais/terapia
11.
Eur Arch Psychiatry Clin Neurosci ; 271(7): 1275-1284, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34269881

RESUMO

Establishing symptom-based predictors of electroconvulsive therapy (ECT) outcome seems promising, however, findings concerning the predictive value of distinct depressive symptoms or subtypes are limited; previous factor-analytic approaches based on the Montgomery-Åsberg Depression Rating Scale (MADRS) remained inconclusive, as proposed factors varied across samples. In this naturalistic study, we refrained from these previous factor-analytic approaches and examined the predictive value of MADRS single items and their change during the course of ECT concerning ECT outcome. We used logistic and linear regression models to analyze MADRS data routinely assessed at three time points in 96 depressed psychiatric inpatients over the course of ECT. Mean age was 53 years (SD 14.79), gender ratio was 58:38 (F:M), baseline MADRS score was M = 30.20 (SD 5.42). MADRS single items were strong predictors of ECT response, remission and overall symptom reduction, especially items 1 (apparent sadness), 2 (reported sadness) and 8 (inability to feel), assessing affective symptoms. Strongest effects were found for regression models including item 2 (reported sadness) with up to 80% correct prediction of ECT outcome. ROC analyses were performed to estimate the optimal cut-point for treatment response. MADRS single items during the course of ECT might pose simple, reliable, time- and cost-effective predictors of ECT outcome. More severe affective symptoms of depression at baseline and a stronger reduction of these affective symptoms during the course of ECT seem to be positively associated with ECT outcome. Precise cut-off values for clinical use were proposed. Generally, these findings underline the benefits of a symptom-based approach in depression research and treatment in addition to depression sum-scores and generalized diagnoses.


Assuntos
Depressão , Eletroconvulsoterapia , Adulto , Idoso , Depressão/psicologia , Depressão/terapia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Escalas de Graduação Psiquiátrica , Resultado do Tratamento
12.
BMC Public Health ; 21(1): 828, 2021 04 30.
Artigo em Inglês | MEDLINE | ID: mdl-33931077

RESUMO

BACKGROUND: Because refugees face significant adversities before, during, and after resettlement, resilience is of central importance to this population. However, strengths-based research on post-migration refugee experiences is sparse. METHODS: We conducted semi-structured interviews with 54 adult refugee participants who arrived in Germany between 2013 and 2018 in their preferred language. We analyzed different aspects of resilience in these interviews using thematic analysis. RESULTS: Nine themes were identified. Four themes manifest resilience in different ways and encompass cognitive as well as behavioral strategies for facing adversity, self-ascriptions of resilience as a personal trait or lasting characteristic, and the role of volunteering, work, and activism for refugee causes. Five themes capture factors that facilitate resilience: social support, experiencing migration as an opportunity generally and for women in particular, being a parent, and being young. CONCLUSIONS: This study adds to a growing body of knowledge about resilience among adult refugees. It may support clinicians working with refugees by making them aware of specific manifestations of resilience and factors promoting positive adaptation specific to this client group. It also contributes to a more strengths-based view on refugee mental health and processes of integration.


Assuntos
Refugiados , Adulto , Feminino , Alemanha , Humanos , Saúde Mental , Pesquisa Qualitativa , Voluntários
13.
Neuropsychobiology ; 79(6): 408-416, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32344410

RESUMO

BACKGROUND/AIMS/METHODS: Electroconvulsive therapy (ECT) is still one of the most potent treatments in the acute phase of major depressive disorder (MDD) and particularly applied in patients considered treatment resistant. However, despite the frequent and widespread use of ECT for >70 years, the exact neurobiological mechanisms underlying its efficacy remain unclear. The present review aims to describe differential antidepressant and cognitive effects of ECT as well as effects on markers of neural activity and connectivity, neurochemistry, and inflammation that might underlie the treatment response and remission. RESULTS: Region- specific changes in brain function and volume along with changes in concentrations of neurotransmitters and neuroinflammatory cytokines might serve as potential biomarkers for ECT outcomes. CONCLUSIONS: However, as current data is not consistent, future longitudinal investigations should combine modalities such as MRI, MR spectroscopy, and peripheral physiological measures to gain a deeper insight into interconnected time- and modality-specific changes in response to ECT.


Assuntos
Transtorno Depressivo Maior/terapia , Eletroconvulsoterapia , Avaliação de Resultados em Cuidados de Saúde , Transtorno Depressivo Maior/imunologia , Transtorno Depressivo Maior/metabolismo , Transtorno Depressivo Maior/fisiopatologia , Humanos
14.
Neuropsychobiology ; 79(6): 372-383, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31340213

RESUMO

Transcranial direct current stimulation (tDCS) is a neuromodulation technique, which noninvasively alters cortical excitability via weak polarizing currents between two electrodes placed on the scalp. Since it is comparably easy to handle, cheap to use and relatively well tolerated, tDCS has gained increasing interest in recent years. Based on well-known behavioral effects, a number of clinical studies have been performed in populations including patients with major depressive disorder followed by schizophrenia and substance use disorders, in sum with heterogeneous results with respect to efficacy. Nevertheless, the potential of tDCS must not be underestimated since it could be further improved by systematically investigating the various stimulation parameters to eventually increase clinical efficacy. The present article briefly explains the underlying physiology of tDCS, summarizes typical stimulation protocols and then reviews clinical efficacy for various psychiatric disorders as well as prevalent adverse effects. Future developments include combined and more complex interactions of tDCS with pharmacological or psychotherapeutic interventions. In particular, using computational models to individualize stimulation protocols, considering state dependency and applying closed-loop technologies will pave the way for tDCS-based personalized interventions as well as the development of home treatment settings promoting the role of tDCS as an effective treatment option for patients with mental health problems.


Assuntos
Transtornos de Ansiedade/terapia , Transtorno Bipolar/terapia , Transtorno Depressivo Maior/terapia , Psiquiatria/métodos , Esquizofrenia/terapia , Transtornos Relacionados ao Uso de Substâncias/terapia , Estimulação Transcraniana por Corrente Contínua , Humanos , Estimulação Transcraniana por Corrente Contínua/efeitos adversos , Estimulação Transcraniana por Corrente Contínua/métodos , Estimulação Transcraniana por Corrente Contínua/normas
15.
Eur Arch Psychiatry Clin Neurosci ; 270(1): 119-126, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30560291

RESUMO

Repetitive transcranial magnetic stimulation (rTMS) is a neuromodulation technique that stimulates cortical regions via time-varying electromagnetic fields; in several countries this technique has been approved as a treatment for major depressive disorder. One empirically established target in antidepressant pharmacotherapy is the flavin-containing monoamine oxidoreductase (MAO). The function of MAO enzymes is based on oxidation processes that may be sensitive towards strong electromagnetic fields. Therefore, we hypothesized that rTMS-induced electromagnetic fields impact the activity of this enzyme. Using crude synaptosomal cell preparations from human SH-SY5Y neuroblastoma cells and rat cortex as well as viable cells, we assessed the effects of rTMS on MAO-A and -B activity in a well-controlled in vitro set up. In short, samples were stimulated at maximal intensity with an equal number of total stimuli at frequencies of 5, 20, and 100 Hz. Sham stimulation was performed in parallel. Treatment at frequencies of 5 and 20 Hz significantly decreased mainly MAO-B activity in all tissue preparations and species, whereas 100 Hz stimulation remained without effect on any MAO activity. Our results support the hypothesis, that rTMS-induced electromagnetic fields affect MAO activity and provide further evidence for intracellular effects possibly contributing to therapeutic effects of this neuromodulatory method. On a cautionary note, however, our findings are solely based on in vitro evidence.


Assuntos
Córtex Cerebral/enzimologia , Monoaminoxidase/metabolismo , Sinaptossomos/enzimologia , Estimulação Magnética Transcraniana , Células Tumorais Cultivadas/enzimologia , Animais , Linhagem Celular Tumoral , Humanos , Neuroblastoma/enzimologia , Ratos
16.
Eur Arch Psychiatry Clin Neurosci ; 270(1): 95-106, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30796528

RESUMO

The sudden arrival of culturally diverse asylum seekers and refugees into Germany has created a strong demand for recognizing and appropriately treating those suffering from mental health issues. Due to many systemic, organizational, cultural and socio-linguistic barriers, psychiatric treatment of refugees is posing a major challenge to Germany's mental health care system. Thus, there is a need for alternative models that allow for increased access to adequate, effective and efficient culturally sensitive mental health care services. Here, we describe the Mental Health in Refugees and Asylum Seekers (MEHIRA) project, a multicentre randomized controlled trial investigating a stepped collaborative care model (SCCM) for providing mental health treatment in this vulnerable population. The proposed SCCM aims to decrease the aforementioned barriers. Adult and adolescent participants will be screened for depressive symptoms and matched to appropriate psychological interventions, including group-level interventions (START intervention, Empowerment/Gender-sensitive/Peer to peer), and other innovative, digital treatment approaches (Smartphone application). The therapeutic effect of the SCCM will be compared to TAU (treatment-as-usual). All interventions have been designed to be culturally sensitive, and offered in two different languages: Arabic and Farsi. The outcome of this study may contribute significantly to future clinical and legal guidelines in developing parallel and efficient new structures of treatment. Collected data will inform primary and secondary mental health care providers with recommendations concerning the design and implementation of effective treatment models and programmes. Guidelines and recommendations may also potentially be adopted by other host countries, developing countries and also in humanitarian aid programmes.


Assuntos
Assistência à Saúde Culturalmente Competente , Depressão/terapia , Serviços de Saúde Mental/organização & administração , Psicoterapia , Ensaios Clínicos Controlados Aleatórios como Assunto/métodos , Refugiados/psicologia , Projetos de Pesquisa , Transtornos de Estresse Pós-Traumáticos/terapia , Adolescente , Adulto , Idoso , Depressão/diagnóstico , Feminino , Alemanha , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Multicêntricos como Assunto/métodos , Estudos Prospectivos , Transtornos de Estresse Pós-Traumáticos/diagnóstico , Adulto Jovem
17.
Fortschr Neurol Psychiatr ; 88(2): 95-104, 2020 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-31853910

RESUMO

OBJECTIVE: In light of the current humanitarian crises in the Arabic world, a version of the Mini International Neuropsychiatric Interview (MINI) in standard Arabic, enabling a fast and efficient diagnosis of psychiatric disorders, is urgently needed. The aim of the present pilot study was to provide a culturally sensitive translation and adaptation of the MINI to standard Arabic and to undertake first steps towards its validation in a sample of Arab refugees. METHODS: Various experts in the field of psychiatry and psychotherapy, familiar with both Western and Arab cultures, were involved in the multi-level adaption process. N = 20 Arabic speaking refugee patients could be recruited for the pilot study at the Clearingstelle, established by the Charité, Univeritätsmedizin Berlin. The MINI diagnoses were compared to diagnoses by experts who were blinded to the MINI diagnoses, and screening instruments for depression (Patient Health Questionnaire 9, PHQ-9) and posttraumatic stress disorder (PTSD) (Harvard Trauma Questionnaire, HTQ) were used. RESULTS: Details concerning the particularities of the cultural adaptation process are comprehensively summarized and presented. Kappa values did not show any satisfactory concordance between the MINI and expert diagnoses. However, significantly strong concordance was found between the MINI and the PHQ-9 (κ = .69) and the HTQ (κ = .68). CONCLUSION: These results provide first indications for the validity of the standard Arabic version of the MINI and can be used as a basis for further, more comprehensive validation studies. Moreover, this study depicts a model process for the cultural adaptation of psychometric instruments.


Assuntos
Competência Cultural/organização & administração , Entrevistas como Assunto , Escalas de Graduação Psiquiátrica , Traduções , Arábia , Humanos , Projetos Piloto , Psicometria
18.
Z Kinder Jugendpsychiatr Psychother ; 48(6): 453-457, 2020 Nov.
Artigo em Alemão | MEDLINE | ID: mdl-33172360

RESUMO

Mental Disorders among Refugees Abstract. Children and adolescents with migration and refugee backgrounds are subject to various health-related, psychosocial, sociocultural, and economic burdens that may influence the prevalence, manifestation, course, and treatment as well as prognosis of mental disorders. In addition, they are particularly disadvantaged by numerous barriers to accessing the mental healthcare and treatment granted natives. The so-called transition gap only exacerbates the situation. As a solution, we provide recommendations for improving the mental healthcare of children and adolescents with a migration and refugee background analogous to the situation for adults. For inpatient settings, where mental healthcare is inadequate, we recommend the establishment of so-called adolescent wards under child and adolescent and adult psychiatric-psychotherapeutic management, with appropriate nursing and therapeutic staffing as well as a special "transition management" including the training of intercultural competence.


Assuntos
Transtornos Mentais/epidemiologia , Refugiados/psicologia , Refugiados/estatística & dados numéricos , Adolescente , Criança , Humanos , Transtornos Mentais/diagnóstico , Transtornos Mentais/terapia , Prevalência
19.
Cereb Cortex ; 28(12): 4365-4378, 2018 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-29161351

RESUMO

Affective experience has effects on subjective feelings, physiological indices, entails immediate activity changes in the brain, and even influences brain networks in a protracted manner. However, it is still unclear, how the functional connectivity (FC) interplay between major intrinsic connectivity networks upon affective stimulation depends on affective valence, and whether this is specific for affective experience, i.e., can be distinguished from cognitive task execution. Our study included fMRI scans during and after affective stimulation with sad and neutral movies and a working memory task complemented with measures of cardiovascular activity and mood. Via parcellation of the brain into default mode network (DMN), central executive network (CEN), and dorsal attention network, and application of network-based statistics, we identified subnetworks associated with changing psychological contexts. Specific effects for affective stimulation with negative valence were both reduced heart rate variability and mood, and upregulated FC of inter-CEN-DMN connections while intra-DMN connections were downregulated. Furthermore, results demonstrated a valence-specific dynamic carry-over effect in nodes of the CEN, which temporarily increased their FC strength after affective stimulation with negative valence and exhibited distinct temporal profiles. The reported effects were clearly distinguishable from those of a cognitive task and further elucidate the trajectory of affective experience.


Assuntos
Afeto/fisiologia , Córtex Cerebral/fisiologia , Cognição/fisiologia , Adulto , Atenção/fisiologia , Mapeamento Encefálico , Função Executiva/fisiologia , Feminino , Humanos , Imageamento por Ressonância Magnética , Memória de Curto Prazo/fisiologia , Pessoa de Meia-Idade , Vias Neurais/fisiologia , Ruminação Cognitiva/fisiologia , Adulto Jovem
20.
Eur Arch Psychiatry Clin Neurosci ; 268(8): 797-808, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29214483

RESUMO

Major Depressive Disorder (MDD) is one of the most prevalent psychiatric disorders worldwide. About 20-30% of patients do not respond to the standard psychopharmacological and/or psychotherapeutic interventions. Mounting evidence from neuroimaging studies in MDD patients reveal altered activation patterns in lateral prefrontal brain areas. Successful cognitive behavioral therapy (CBT) is associated with a recovery of these neural alterations. Moreover, it has been demonstrated that transcranial direct current stimulation (tDCS) is capable of influencing prefrontal cortex activity and cognitive functions such as working memory and emotion regulation. Thus, a clinical trial investigating the effects of an antidepressant intervention combining CBT with tDCS seems promising. The present study investigates the antidepressant efficacy of a combined CBT-tDCS intervention as compared to CBT with sham-tDCS or CBT alone. A total of 192 patients (age range 20-65 years) with MDD (Hamilton Depression Rating Scale Score ≥ 15, 21-item version) will be recruited at four study sites across Germany (Berlin, Munich, Tuebingen, and Freiburg) and randomly assigned to one of the following three treatment arms: (1) CBT + active tDCS; (2) CBT + sham-tDCS; and (3) CBT alone. All participants will attend a 6-week psychotherapeutic intervention comprising 12 sessions of CBT each lasting 100 min in a closed group setting. tDCS will be applied simultaneously with CBT. Active tDCS includes stimulation with an intensity of 2 mA for 30 min with the anode placed over F3 and the cathode over F4 according to the EEG 10-20 system, if assigned. The primary outcome measure is the change in Montgomery-Åsberg Depression Rating Scale scores from baseline to 6, 18, and 30 weeks after the first session. Participants also undergo pre- and post-treatment neuropsychological testing and functional magnetic resonance imaging (fMRI) to assess changes in prefrontal functioning and connectivity. The study investigates whether CBT can be augmented by non-invasive brain stimulation techniques such as tDCS in the treatment of MDD. It is designed as a proof-of-principle trial for the combined tDCS-CBT treatment, but also allows the investigation of the neurobiological underpinnings of the interaction between both interventions in MDD. Trial registration ClinicalTrials.gov Identifier NCT02633449.


Assuntos
Terapia Cognitivo-Comportamental/métodos , Transtorno Depressivo Maior/psicologia , Transtorno Depressivo Maior/terapia , Córtex Pré-Frontal/fisiologia , Estimulação Transcraniana por Corrente Contínua/métodos , Adulto , Idoso , Transtorno Depressivo Maior/diagnóstico por imagem , Método Duplo-Cego , Feminino , Seguimentos , Humanos , Processamento de Imagem Assistida por Computador , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Oxigênio/sangue , Córtex Pré-Frontal/diagnóstico por imagem , Escalas de Graduação Psiquiátrica , Resultado do Tratamento , Adulto Jovem
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