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1.
BMC Psychiatry ; 20(1): 554, 2020 11 23.
Artigo em Inglês | MEDLINE | ID: mdl-33228583

RESUMO

BACKGROUND: The jumping to conclusions bias (JTC) is considered to be an important causal factor in theoretical models for the formation and maintenance of delusions. However, recent meta-analytic findings show a rather equivocal pattern of results regarding associations between JTC and delusions. Thus, the present study aims to investigate in a large sample whether the JTC-bias is more pronounced in patients with psychotic disorders in comparison to controls and whether the JTC bias is associated with a more severe delusional conviction, persecutory delusions, and positive symptoms in general. METHODS: Patients with psychotic disorders (n = 300) enrolled in a therapy trial and healthy controls (n = 51) conducted a variant of the beads task (fish task) as a measure for the JTC-bias at the start of the trial. Further, clinical interviews were used to assess patients' delusional severity and delusional conviction. RESULTS: There were no statistically significant differences between patients with psychotic disorders (with 53% displaying the JTC-bias) and controls (41%). Furthermore, there were no statistically significant correlations between JTC measures and persecutory delusions, delusional conviction, and positive symptoms. CONCLUSIONS: We found no differences in JTC between patients with psychotic disorders and healthy controls, which is in part in line with meta-analytic findings using a wide range of JTC task variants. Interestingly, patients with psychotic disorders displayed JTC rates commonly found in the literature, while healthy control subjects showed an unexpectedly high level of JTC. The task variant we used in the present study (fish task) is discussed as a potential reason for our results, as it may induce a more deliberative reasoning style in controls as compared to the traditional beads task. Furthermore, possible implications for the measurement of the JTC-bias, in general, are discussed. TRIAL REGISTRATION: ISRCTN29242879 ( isrctn.com ), date of registration: April 12th 2006, retrospectively registered.


Assuntos
Transtornos Psicóticos , Viés , Tomada de Decisões , Delusões , Humanos , Resolução de Problemas , Transtornos Psicóticos/diagnóstico
2.
BMC Psychiatry ; 20(1): 59, 2020 02 10.
Artigo em Inglês | MEDLINE | ID: mdl-32041577

RESUMO

BACKGROUND: Cognitive models of psychosis postulate an important role of Theory of mind (ToM) in the formation and maintenance of delusions, but research on this plausible conjecture has gathered conflicting findings. In addition, it is still an open question whether problems in emotion recognition (ER) are associated with delusions. We examined the association of problems in ToM and ER with different aspects of delusions in a large sample of patients with psychosis enrolled in a therapy trial. This also enabled us to explore the possible impact of ToM and ER on one part of patients' social life: the quality of their therapeutic relationship. METHODS: Patients with psychotic disorders and delusions and/or hallucinations (n = 185) and healthy controls (n = 48) completed a ToM picture sequencing task and an ER task. Subsequently, patients were enrolled in a randomized-controlled Cognitive Behavior Therapy (CBT) trial (ISRCTN29242879). Patients and therapists rated the quality of the therapeutic relationship during the first five sessions of therapy. RESULTS: In comparison to controls, patients were impaired in both ToM and ER. Patients with deficits in ER experienced more severe delusional distress, whereas ToM problems were not related to delusions. In addition, deficits in ER predicted a less favorable therapeutic relationship and interactional problems viewed by the therapist. Impaired ER also moderated (increased) the negative influence of delusions on the therapeutic relationship and interactional difficulties viewed by the therapist. CONCLUSIONS: Cognitive models on the formation and maintenance of delusions should consider ER as a potential candidate that might be related to the formation and maintenance of delusional distress, whereas problems in ToM might not be directly related to delusions and secondary dimensions of delusions. In addition, problems in ER in patients with psychosis might have an impact on the quality of the therapeutic relationship and patients with problems in ER are more likely to be viewed as problematic by their therapists. Nevertheless, training ER might be a way to improve the quality of the therapeutic relationship and potentially the effectiveness of CBT or other interventions for patients with psychosis.


Assuntos
Delusões , Emoções , Transtornos Psicóticos/psicologia , Transtornos Psicóticos/terapia , Teoria da Mente , Adulto , Delusões/complicações , Delusões/terapia , Feminino , Alucinações/complicações , Alucinações/terapia , Humanos , Masculino , Transtornos Psicóticos/complicações
3.
Eur Child Adolesc Psychiatry ; 29(7): 1011-1022, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-31599351

RESUMO

Cognitive behavioral therapy for psychosis (CBT) is an effective treatment in adult patients with schizophrenia. However, no randomized controlled and blinded trial in adolescents with early-onset psychosis (EOP) has been conducted. Therefore, the present pilot study explores the acceptance, tolerability, feasibility, and safety of a modified CBT in adolescents with EOP. Twenty-five adolescents with EOP were randomized to either 9 months (20 sessions) of CBT + treatment as usual (TAU) or TAU alone. The primary endpoint was the PANSS-positive subscale (P1-7). Secondary endpoints included psychopathology, global functioning, and quality of life (QoL). Acceptance, tolerability, feasibility, and safety were assessed. Blinded assessments took place by the end of the treatment (9 months) and at 24-month follow-up. Despite improvements in both groups and lack of statistical significance between CBT + TAU and TAU regarding the primary endpoint, we observed between-group effect sizes of at least d = 0.39 in favor of CBT + TAU at post-treatment for delusions, negative symptoms, functioning and QoL after the intervention and effect sizes of at least d = 0.35 after 24 months. CBT in EOP was highly acceptable (73.5% agreed to randomization), well-tolerated (83.1% attendance rate, no drop-outs), and safe (one serious adverse event (SAE) in CBT + TAU in comparison with six SAEs in TAU). These findings suggest that CBT adapted to the needs of adolescents with EOP is a promising approach regarding negative symptoms, functioning, and QoL. CBT is a safe and tolerable treatment. However, due to the small sample size and the pilot character of the study, these conclusions are limited, and should be tested in a larger, adequately powered randomized controlled trial.


Assuntos
Terapia Cognitivo-Comportamental/métodos , Transtornos Psicóticos/terapia , Qualidade de Vida/psicologia , Adolescente , Adulto , Feminino , Humanos , Masculino , Projetos Piloto , Transtornos Psicóticos/psicologia , Resultado do Tratamento , Adulto Jovem
4.
Early Interv Psychiatry ; 12(6): 1157-1165, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-28524542

RESUMO

BACKGROUND: The objective of this study is to test the conflicting theories concerning the association of negative self and other schemata and paranoid ideation. METHODS: A risk-based approach, including risk stratification, is used to gain insight into the association of the negative self and other schemata that may be shared by individuals or differentiate between individuals at clinical high risk (CHR) for a first-episode psychosis and those with full-blown psychosis. The dataset includes a sample of individuals at CHR (n = 137) and a sample of individuals with persisting positive symptoms (PPS, n = 211). The CHR sample was subdivided according to a prognostic index yielding 4 CHR sub-classes with increasing risk for transition to psychosis. RESULTS: Negative beliefs about the self were associated with paranoid ideation in CHR and a lower risk state. In the highest risk state and full-blown psychosis, there is an association with negative beliefs about others. CONCLUSION: These findings are in line with theories suggesting a switch from a predominantly activated negative self-schema to a malevolent others-schema in association with paranoid ideation along the risk-continuum. However, due to methodological limitations these results should be replicated by future studies.


Assuntos
Cultura , Transtornos Paranoides/diagnóstico , Transtornos Psicóticos/diagnóstico , Adulto , Feminino , Humanos , Masculino , Transtornos Paranoides/complicações , Sintomas Prodrômicos , Prognóstico , Transtornos Psicóticos/complicações , Adulto Jovem
5.
J Nurs Meas ; 25(3): 559-572, 2017 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-29268835

RESUMO

BACKGROUND AND PURPOSE: The Family Questionnaire-Brazilian Portuguese Version (FQ-BPV) has been preliminarily validated in the Brazilian population. This study assessed the predictive validity of the FQ-BPV for relapse in patients with schizophrenia. METHODS: Ninety-four dyads (patients with schizophrenia and their relatives) were recruited from three mental health clinics. Expressed emotion was assessed using the FQ-BPV. Presence of relapse was assessed at 6-, 9-, 12-, and 18-month follow-ups and analyzed through logistic regressions. RESULTS: The critical comments (CC) domain of the FQ-BPV was statistically significant at 18 months. However, the model was not sufficiently robust to classify individuals correctly into relapse or no relapse categories. CONCLUSION: The FQ-BPV did not predict relapse well and we cannot recommend it for that purpose in Brazil without further studies.


Assuntos
Família , Esquizofrenia/diagnóstico , Inquéritos e Questionários , Traduções , Adolescente , Adulto , Idoso , Brasil , Emoções Manifestas , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva , Reprodutibilidade dos Testes , Adulto Jovem
7.
Schizophr Bull ; 40(6): 1338-46, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24743864

RESUMO

Theoretical models postulate an important role of attributional style (AS) in the formation and maintenance of persecutory delusions and other positive symptoms of schizophrenia. However, current research has gathered conflicting findings. In a cross-sectional design, patients with persistent positive symptoms of schizophrenia (n = 258) and healthy controls (n = 51) completed a revised version of the Internal, Personal and Situational Attributions Questionnaire (IPSAQ-R) and assessments of psychopathology. In comparison to controls, neither patients with schizophrenia in general nor patients with persecutory delusions (n = 142) in particular presented an externalizing and personalizing AS. Rather, both groups showed a "self-blaming" AS and attributed negative events more toward themselves. Persecutory delusions were independently predicted by a personalizing bias for negative events (beta = 0.197, P = .001) and by depression (beta = 0.152, P = .013), but only 5% of the variance in persecutory delusions could be explained. Cluster analysis of IPSAQ-R scores identified a "personalizing" (n = 70) and a "self-blaming" subgroup (n = 188), with the former showing slightly more pronounced persecutory delusions (P = .021). Results indicate that patients with schizophrenia and patients with persecutory delusions both mostly blamed themselves for negative events. Nevertheless, still a subgroup of patients could be identified who presented a more pronounced personalizing bias and more severe persecutory delusions. Thus, AS in patients with schizophrenia might be less stable but more determined by individual and situational characteristics that need further elucidation.


Assuntos
Delusões/fisiopatologia , Depressão/fisiopatologia , Controle Interno-Externo , Esquizofrenia/fisiopatologia , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
8.
Psychiatr Prax ; 41(4): 215-20, 2014 May.
Artigo em Alemão | MEDLINE | ID: mdl-24089318

RESUMO

OBJECTIVE: To analyze direct costs and cost determinants in psychotic patients with persistent positive symptoms (PPS). METHODS: A total of 330 patients with PPS were recruited via 6 university clinics and interviewed about service utilization in the previous 3 months. After monetary valuation, costs were analyzed via generalized linear mixed models with gamma distribution and log-link function to identify determinants of direct costs. RESULTS: The mean costs were 7,065 € and resulted predominantly from psychiatric hospital care (63 %), assisted living (17 %) and complementary services (8 %). We found statistically significant associations between direct costs and an increasing score of the negative subscale of the Positive and Negative Syndrome Scale (+ 2,484 € per point, p < 0.001) and experiencing less than one social contact per week (- 2,272 €, p = 0.003). CONCLUSION: PPS incurred substantial direct costs which primarily resulted from hospital treatment, and were strongly associated with symptom severity.


Assuntos
Gastos em Saúde/estatística & dados numéricos , Programas Nacionais de Saúde/economia , Escalas de Graduação Psiquiátrica , Esquizofrenia/economia , Esquizofrenia/terapia , Psicologia do Esquizofrênico , Adulto , Terapia Combinada/economia , Avaliação da Deficiência , Feminino , Alemanha , Hospitais Psiquiátricos , Hospitais Universitários , Humanos , Modelos Lineares , Masculino , Avaliação das Necessidades/economia
9.
Psychiatr Prax ; 41(2): 95-100, 2014 Mar.
Artigo em Alemão | MEDLINE | ID: mdl-24089322

RESUMO

OBJECTIVE: The multiple-choice vocabulary intelligence test MWT (Mehrfachwahl-Wortschatz-Intelligenztest) as a measure of premorbid IQ is widely used in clinical practice and research in Germany. The study examined whether the MWT is actually insensitive to brain dysfunction and psychopathology in patients with schizophrenia. METHOD: 81 post-acute patients with schizophrenia and 27 matched healthy controls completed the MWT at two points in time. At baseline, we further applied a neuropsychological test battery and a psychopathology rating. RESULTS: The multiple linear regression analysis showed that the MWT-IQ of patients is significantly confounded by neuropsychological dysfunctions and psychopathology. The repeated measurement ANOVA pointed to a significant recovery effect of the MWT-IQ during clinical remission in the patient group. CONCLUSION: The results question the validity of the MWT as a measure of premorbid IQ in schizophrenia.


Assuntos
Testes de Inteligência/estatística & dados numéricos , Inteligência , Sintomas Prodrômicos , Transtornos Psicóticos/diagnóstico , Transtornos Psicóticos/psicologia , Esquizofrenia/diagnóstico , Psicologia do Esquizofrênico , Vocabulário , Adulto , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos/estatística & dados numéricos , Escalas de Graduação Psiquiátrica/estatística & dados numéricos , Psicometria/estatística & dados numéricos , Valores de Referência , Reprodutibilidade dos Testes , Esquizofrenia Paranoide/diagnóstico , Esquizofrenia Paranoide/psicologia , Adulto Jovem
10.
Psychiatry Res ; 210(3): 702-9, 2013 Dec 30.
Artigo em Inglês | MEDLINE | ID: mdl-23992793

RESUMO

Despite the promising findings in relation to the efficacy of cognitive behavioral therapy for psychosis (CBTp), little attention has been paid to the therapy skills necessary to deliver CBTp and to the influence of such skills on processes underlying therapeutic change. Our study investigated the associations between general and technical therapy skills and patient experiences of change processes in CBTp. The study sample consisted of 79 patients with psychotic disorders who had undergone CBTp. We randomly selected one tape-recorded therapy session from each of the cases. General and technical therapy skills were assessed by the Cognitive Therapy Scale for Psychosis. The Bern Post Session Report for Patients was applied to measure patient experiences of general change processes in the sense of Grawe's psychological therapy. General skills, such as feedback and understanding, explained 23% of the variance of patients' self-esteem experience, but up to 10% of the variance of mastery, clarification, and contentment experiences. The technical skill of guided discovery consistently showed negative associations with patients' alliance, contentment, and control experiences. The study points to the importance of general therapy skills for patient experiences of change processes in CBTp. Some technical skills, however, could detrimentally affect the therapeutic relationship.


Assuntos
Terapia Cognitivo-Comportamental/métodos , Satisfação do Paciente , Relações Profissional-Paciente , Transtornos Psicóticos/terapia , Adulto , Afeto , Idoso , Atenção , Competência Clínica , Feminino , Alemanha , Humanos , Masculino , Aceitação pelo Paciente de Cuidados de Saúde/psicologia , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricos , Transtornos Psicóticos/diagnóstico , Transtornos Psicóticos/psicologia , Análise de Regressão , Resultado do Tratamento
11.
Cogn Affect Behav Neurosci ; 13(2): 330-45, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23297009

RESUMO

Attributions are constantly assigned in everyday life. A well-known phenomenon is the self-serving bias: that is, people's tendency to attribute positive events to internal causes (themselves) and negative events to external causes (other persons/circumstances). Here, we investigated the neural correlates of the cognitive processes implicated in self-serving attributions using social situations that differed in their emotional saliences. We administered an attributional bias task during fMRI scanning in a large sample of healthy subjects (n = 71). Eighty sentences describing positive or negative social situations were presented, and subjects decided via buttonpress whether the situation had been caused by themselves or by the other person involved. Comparing positive with negative sentences revealed activations of the bilateral posterior cingulate cortex (PCC). Self-attribution correlated with activation of the posterior portion of the precuneus. However, self-attributed positive versus negative sentences showed activation of the anterior portion of the precuneus, and self-attributed negative versus positive sentences demonstrated activation of the bilateral insular cortex. All significant activations were reported with a statistical threshold of p ≤ .001, uncorrected. In addition, a comparison of our fMRI task with data from the Internal, Personal and Situational Attributions Questionnaire, Revised German Version, demonstrated convergent validity. Our findings suggest that the precuneus and the PCC are involved in the evaluation of social events with particular regional specificities: The PCC is activated during emotional evaluation, the posterior precuneus during attributional evaluation, and the anterior precuneus during self-serving processes. Furthermore, we assume that insula activation is a correlate of awareness of personal agency in negative situations.


Assuntos
Mapeamento Encefálico , Córtex Cerebral/fisiologia , Controle Interno-Externo , Percepção Social , Adolescente , Adulto , Córtex Cerebral/irrigação sanguínea , Feminino , Lateralidade Funcional , Humanos , Processamento de Imagem Assistida por Computador , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Oxigênio/sangue , Reprodutibilidade dos Testes , Adulto Jovem
12.
J Clin Nurs ; 22(11-12): 1521-30, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23134331

RESUMO

AIMS AND OBJECTIVES: To evaluate the internal reliability and validity of the Brazilian Portuguese version of the Family Questionnaire among families of schizophrenia outpatients. BACKGROUND: The main studies about the family environment of schizophrenia patients are related to the concept of Expressed Emotion. There is currently no instrument to evaluate this concept in Brazil that is easily applicable and comparable with studies from other countries. DESIGN: Methodological and cross-sectional research design. METHOD: A convenience sample of 130 relatives of schizophrenia outpatients was selected. The translation and cultural adaptation of the instrument involved experts in mental health and experts in the German language and included back translation, semantic evaluation of items and pretesting of the instrument with 30 relatives of schizophrenia outpatients. The psychometric properties of the instrument were studied with another 100 relatives, which fulfilled the requirements for the Brazilian Portuguese version of the instrument. The psychometric properties of the instrument were assessed by construct validity (using an analysis of its key components, comparisons between distinct groups-convergent validity with the Antonovsky's Sense of Coherence Scale) and reliability (checking the internal consistency of its items and its test-retest reproducibility). RESULTS: The analysis of main components confirmed dimensionality patterns that were comparable between the original and adapted versions. In two domains of the instrument, critical comments and emotional over-involvement had moderate and significant correlations, respectively, with Antonovsky's Sense of Coherence Scale, appropriate values of Cronbach's alpha and strong and significant correlations, respectively, in test-retest reproducibility. We observed significant differences between distinct groups of parents in the category of emotional over-involvement. CONCLUSION: We conclude that the Portuguese-adapted version of the Family Questionnaire is valid and reliable for the study sample. RELEVANCE TO CLINICAL PRACTICE: This study provided evidence that the Family Questionnaire is a reliable and valid instrument for assessing expressed emotion. It is easy and practical to use and is acceptable for use in a Brazilian cultural population.


Assuntos
Adaptação Psicológica , Cultura , Família , Pacientes Ambulatoriais , Psicometria , Esquizofrenia , Brasil , Humanos
13.
Heart Lung ; 42(2): 105-11, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23110854

RESUMO

OBJECTIVES: To examine the temporal contingency of anxiety and implantable cardioverter defibrillator (ICD) therapy (anti-tachycardia-pacing and shocks to prevent ventricular tachycardia and/or fibrillation). BACKGROUND: It is under debate whether anxiety is a precursor and/or consequence of ICD-therapy. METHODS: In a prospective longitudinal study, fifty-four patients undergoing first-time ICD-implantation were assessed for anxiety, frequency of ICD-shocks and anti-tachycardia-pacing up to two days before ICD-implantation (T0) and twelve months later (T1). RESULTS: Anxiety at T0 did not predict frequency of ICD-shocks at T1, but ICD-shocks significantly predicted increased anxiety at T1. In contrast, anxiety at T0 and T1 was unrelated to frequency of anti-tachycardia-pacing. Effects remained stable when we controlled for potentially confounding variables (e.g. age, sex, cardiac health and depression at T0). CONCLUSION: Our findings indicate that repeated ICD-shocks are a cause of anxiety in ICD-patients rather than a consequence, thus shock frequency should be minimized.


Assuntos
Ansiedade/diagnóstico , Arritmias Cardíacas , Depressão/diagnóstico , Cardioversão Elétrica , Adulto , Idoso , Ansiedade/epidemiologia , Ansiedade/etiologia , Ansiedade/fisiopatologia , Arritmias Cardíacas/epidemiologia , Arritmias Cardíacas/psicologia , Arritmias Cardíacas/terapia , Fatores de Confusão Epidemiológicos , Desfibriladores Implantáveis , Depressão/etiologia , Depressão/fisiopatologia , Cardioversão Elétrica/efeitos adversos , Cardioversão Elétrica/instrumentação , Cardioversão Elétrica/métodos , Cuidado Periódico , Feminino , Alemanha/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Avaliação de Processos e Resultados em Cuidados de Saúde , Estudos Prospectivos , Escalas de Graduação Psiquiátrica , Psicopatologia , Fatores de Risco , Fatores de Tempo
14.
J Nerv Ment Dis ; 200(7): 569-76, 2012 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-22759932

RESUMO

This study examined the frequency and extent of detrimental effects of cognitive behavioral therapy (CBT) for psychosis. In a randomized clinical trial, we investigated the efficacy of CBT for the reduction of negative symptoms as compared with cognitive remediation (CR) in schizophrenia patients (n = 198). Safety was addressed through assessment of severe adverse events (SAEs), which were defined as suicides, suicide attempts, suicidal crises, and severe symptom exacerbations over a period of 12 months after inclusion in the study. Monthly assessments with Positive and Negative Syndrome Scale and Scale for the Assessment of Negative Symptoms allowed for the analysis of symptom increases during the treatment. There were no suicides in the trial. SAEs were observed in 10 CBT and 5 CR patients. Increases in negative symptoms occurred in 64 CBT and 58 CR patients. These differences were not significant. The maximum increase in negative symptoms under treatment, as compared with the baseline, was equal to an effect size of -0.66 in CBT patients and -0.77 in CR patients. Thus, the SAE rate was comparable between both interventions and was relatively low, given the severity of the psychotic disorder. Therapists should be aware of a subgroup of patients who show symptom increases with large effect sizes and might require more intensive care.


Assuntos
Terapia Cognitivo-Comportamental , Esquizofrenia/terapia , Adulto , Antipsicóticos/uso terapêutico , Cognição , Terapia Combinada , Feminino , Humanos , Masculino , Cooperação do Paciente , Segurança do Paciente , Esquizofrenia/tratamento farmacológico , Psicologia do Esquizofrênico , Método Simples-Cego , Resultado do Tratamento
15.
Schizophr Bull ; 37 Suppl 2: S98-110, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21860053

RESUMO

Clinical studies on cognitive behavioral therapy (CBT) that include schizophrenia patients primarily on the basis of negative symptoms are uncommon. However, those studies are necessary to assess the efficacy of CBT on negative symptoms. This article first gives an overview of CBT on negative symptoms and discusses the methodological problems of selecting an adequate control group. Furthermore, the article describes a clinical study (the TONES-Study, ISRCTN 25455020), which aims to investigate whether CBT is specifically efficacious for the reduction of negative symptoms. This multicenter randomized clinical trial comparing CBT with cognitive remediation (CR) for control of nonspecific effects is depicted in detail. In our trial, schizophrenia patients (n = 198) participated in manualized individual outpatient treatments. Primary outcome is the negative syndrome assessed with the positive and negative syndrome scale, analyzed with multilevel linear mixed models. Patients in both groups moderately improved regarding the primary endpoint. However, against expectation, there was no difference between the groups after treatment in the intention to treat as well as in the per-protocol analysis. In conclusion, psychotherapeutic intervention may be useful for the reduction of negative symptoms. However, there is no indication for specific effects of CBT compared with CR.


Assuntos
Terapia Cognitivo-Comportamental/métodos , Esquizofrenia/terapia , Psicologia do Esquizofrênico , Adulto , Determinação de Ponto Final/métodos , Estudos de Viabilidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Escalas de Graduação Psiquiátrica , Projetos de Pesquisa , Esquizofrenia/tratamento farmacológico , Método Simples-Cego , Resultado do Tratamento
16.
J Psychopharmacol ; 25(7): 896-907, 2011 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-21148022

RESUMO

Variability in response to atypical antipsychotic drugs is due to genetic and environmental factors. Cytochrome P450 (CYP) isoforms are implicated in the metabolism of drugs, while the P-glycoprotein transporter (P-gp), encoded by the ABCB1 gene, may influence both the blood and brain drug concentrations. This study aimed to identify the possible associations of CYP and ABCB1 genetic polymorphisms with quetiapine and norquetiapine plasma and cerebrospinal fluid (CSF) concentrations and with response to treatment. Twenty-two patients with schizophrenia receiving 600 mg of quetiapine daily were genotyped for four CYP isoforms and ABCB1 polymorphisms. Quetiapine and norquetiapine peak plasma and CSF concentrations were measured after 4 weeks of treatment. Stepwise multiple regression analysis revealed that ABCB1 3435C > T (rs1045642), 2677G > T (rs2032582) and 1236C > T (rs1128503) polymorphisms predicted plasma quetiapine concentrations, explaining 41% of the variability (p = 0.001). Furthermore, the ABCB1 polymorphisms predicted 48% (p = 0.024) of the variability of the Δ PANSS total score, with the non-carriers of the 3435TT showing higher changes in the score. These results suggest that ABCB1 genetic polymorphisms may be a predictive marker of quetiapine treatment in schizophrenia.


Assuntos
Membro 1 da Subfamília B de Cassetes de Ligação de ATP/genética , Antipsicóticos/uso terapêutico , Sistema Enzimático do Citocromo P-450/genética , Dibenzotiazepinas/uso terapêutico , Esquizofrenia/tratamento farmacológico , Psicologia do Esquizofrênico , Subfamília B de Transportador de Cassetes de Ligação de ATP , Adulto , Antipsicóticos/efeitos adversos , Antipsicóticos/sangue , Antipsicóticos/líquido cefalorraquidiano , Antipsicóticos/farmacocinética , Dibenzotiazepinas/efeitos adversos , Dibenzotiazepinas/sangue , Dibenzotiazepinas/líquido cefalorraquidiano , Dibenzotiazepinas/farmacocinética , Feminino , Humanos , Modelos Lineares , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Farmacogenética , Projetos Piloto , Escalas de Graduação Psiquiátrica , Fumarato de Quetiapina , Medição de Risco , Fatores de Risco , Esquizofrenia/diagnóstico , Esquizofrenia/enzimologia , Esquizofrenia/genética , Resultado do Tratamento , Adulto Jovem
17.
Trials ; 11: 123, 2010 Dec 29.
Artigo em Inglês | MEDLINE | ID: mdl-21190574

RESUMO

BACKGROUND: It has been demonstrated that cognitive behavioural therapy (CBT) has a moderate effect on symptom reduction and on general well being of patients suffering from psychosis. However, questions regarding the specific efficacy of CBT, the treatment safety, the cost-effectiveness, and the moderators and mediators of treatment effects are still a major issue. The major objective of this trial is to investigate whether CBT is specifically efficacious in reducing positive symptoms when compared with non-specific supportive therapy (ST) which does not implement CBT-techniques but provides comparable therapeutic attention. METHODS/DESIGN: The POSITIVE study is a multicenter, prospective, single-blind, parallel group, randomised clinical trial, comparing CBT and ST with respect to the efficacy in reducing positive symptoms in psychotic disorders. CBT as well as ST consist of 20 sessions altogether, 165 participants receiving CBT and 165 participants receiving ST. Major methodological aspects of the study are systematic recruitment, explicit inclusion criteria, reliability checks of assessments with control for rater shift, analysis by intention to treat, data management using remote data entry, measures of quality assurance (e.g. on-site monitoring with source data verification, regular query process), advanced statistical analysis, manualized treatment, checks of adherence and competence of therapists. Research relating the psychotherapy process with outcome, neurobiological research addressing basic questions of delusion formation using fMRI and neuropsychological assessment and treatment research investigating adaptations of CBT for adolescents is combined in this network. Problems of transfer into routine clinical care will be identified and addressed by a project focusing on cost efficiency. DISCUSSION: This clinical trial is part of efforts to intensify psychotherapy research in the field of psychosis in Germany, to contribute to the international discussion on psychotherapy in psychotic disorders, and to help implement psychotherapy in routine care. Furthermore, the study will allow drawing conclusions about the mediators of treatment effects of CBT of psychotic disorders.


Assuntos
Terapia Cognitivo-Comportamental , Transtornos Psicóticos/terapia , Competência Clínica , Protocolos Clínicos , Análise Custo-Benefício , Humanos , Cooperação do Paciente , Estudos Prospectivos , Projetos de Pesquisa , Método Simples-Cego
18.
J Clin Psychopharmacol ; 30(5): 496-503, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20814316

RESUMO

This study investigated concentrations of quetiapine and norquetiapine in plasma and cerebrospinal fluid (CSF) in 22 schizophrenic patients after 4-week treatment with quetiapine (600 mg/d), which was preceded by a 3-week washout period. Blood and CSF samples were obtained on days 1 and 28, and CSF levels of homovanillic acid (HVA), 5-hydroxyindoleacetic acid (5-HIAA), and 3-methoxy-4-hydroxyphenylglycol (MHPG) concentrations were measured at baseline and after 4 weeks of quetiapine, allowing calculations of differences in HVA (ΔHVA), 5-HIAA (Δ5-HIAA), and MHPG (ΔMHPG) concentrations. Patients were assessed clinically, using the Positive and Negative Syndrome Scale (PANSS) and Clinical Global Impression Scale at baseline and then at weekly intervals. Plasma levels of quetiapine and norquetiapine were 1110 ± 608 and 444 ± 226 ng/mL, and the corresponding CSF levels were 29 ± 18 and 5 ± 2 ng/mL, respectively. After the treatment, the levels of HVA, 5-HIAA, and MHPG were increased by 33%, 35%, and 33%, respectively (P < 0.001). A negative correlation was found between the decrease in PANSS positive subscale scores and CSF ΔHVA (r(rho) = -0.690, P < 0.01), and the decrease in PANSS negative subscale scores both with CSF Δ5-HIAA (r(rho) = -0.619, P = 0.02) and ΔMHPG (r(rho) = -0.484, P = 0.038). Because, unfortunately, schizophrenic patients experience relapses even with the best available treatments, monitoring of CSF drug and metabolite levels might prove to be useful in tailoring individually adjusted treatments.


Assuntos
Dibenzotiazepinas/líquido cefalorraquidiano , Ácido Homovanílico/líquido cefalorraquidiano , Ácido Hidroxi-Indolacético/líquido cefalorraquidiano , Metoxi-Hidroxifenilglicol/líquido cefalorraquidiano , Esquizofrenia/tratamento farmacológico , Adolescente , Adulto , Biomarcadores/sangue , Biomarcadores/líquido cefalorraquidiano , Dibenzotiazepinas/sangue , Dibenzotiazepinas/uso terapêutico , Feminino , Ácido Homovanílico/sangue , Humanos , Ácido Hidroxi-Indolacético/sangue , Masculino , Metoxi-Hidroxifenilglicol/sangue , Pessoa de Meia-Idade , Fumarato de Quetiapina , Esquizofrenia/sangue , Esquizofrenia/líquido cefalorraquidiano , Resultado do Tratamento , Adulto Jovem
19.
J Nerv Ment Dis ; 198(7): 478-85, 2010 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-20611050

RESUMO

We examined whether the cognitive dispute of psychotic symptoms has a negative impact on the course of the therapeutic alliance. Sixty-seven patients with persistent psychotic symptoms received either cognitive behavioral therapy (CBT) or supportive therapy. Questionnaire-based alliance ratings were repeatedly obtained throughout the course of therapy. Patient and therapist alliance ratings were examined separately. Data analyses comprised repeated measurement analyses of variance and cluster analytic procedures. Neither patient nor therapist alliance ratings showed a differential course throughout the treatments. This was despite the implementation of disputing strategies in later stages of CBT. Irrespective of the treatment condition a cluster with a positive alliance rating and a cluster with a poorer rating were found for therapist and patient ratings, respectively. Baseline symptoms and insight differentiated between the types of clusters. In conclusion, CBT-specific interventions that challenge psychotic symptoms do not necessarily negatively influence the course of the alliance.


Assuntos
Conscientização , Terapia Cognitivo-Comportamental/métodos , Delusões/psicologia , Delusões/terapia , Dissidências e Disputas , Relações Profissional-Paciente , Transtornos Psicóticos/psicologia , Transtornos Psicóticos/terapia , Esquizofrenia/terapia , Psicologia do Esquizofrênico , Adulto , Doença Crônica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Satisfação do Paciente , Escalas de Graduação Psiquiátrica , Psicoterapia , Apoio Social , Inquéritos e Questionários
20.
Psychiatry Res ; 179(2): 130-8, 2010 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-20483167

RESUMO

In view of the potential importance of self-esteem in schizophrenia, there is a considerable lack of knowledge about the characteristics of specific self-esteem. The literature suggests that the experience of the self might be particularly destabilised in the transition phase between acute and remission points of the illness. Thus, the present study aims at examining the quality and correlates of different self-concepts at the beginning stabilisation phase of schizophrenia. In this study, 135 patients with schizophrenia were assessed 3 weeks after admission to inpatient treatment. Four central self-concepts were measured by the Frankfurt Self-Concept Scales (FSKN; Deusinger, I.M., 1986, Die Frankfurter Selbstkonzeptskalen (FSKN), Göttingen, Hogrefe). Clinical psychopathologic, neuropsychological and sociodemographic factors were analysed in two-step exploratory correlation and regression analyses to determine their relative contribution to self-concepts. The median of the four self-concepts ranged between -0.9 and -1.4 standard deviations below normative level. The relationship between negative symptoms and self-concepts was consistently significant, even when the contribution of depression was partialed out. In the multivariate analyses, these two symptom clusters explained up to 39% of the variances in our patients' self-evaluation. Neuropsychological dysfunctions were of relatively subordinate relevance for the patients' self-concepts. Thus, our results suggest that specific self-esteem at the point of beginning stabilisation of schizophrenia is significantly confounded not only by depression but also by negative symptoms.


Assuntos
Esquizofrenia/complicações , Psicologia do Esquizofrênico , Autoimagem , Estatística como Assunto/métodos , Adulto , Demografia , Feminino , Humanos , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos , Transtornos da Personalidade/diagnóstico , Transtornos da Personalidade/etiologia , Escalas de Graduação Psiquiátrica , Estudos Retrospectivos , Esquizofrenia/diagnóstico , Adulto Jovem
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