GABRIEL OKAWA BELIZARIO
Projetos de Pesquisa
Unidades Organizacionais
LIM/21 - Laboratório de Neuroimagem em Psiquiatria, Hospital das Clínicas, Faculdade de Medicina
19 resultados
Resultados de Busca
Agora exibindo 1 - 10 de 19
conferenceObject The impact of structured physical exercise on cognitive function of bipolar patients: A study protocol for a randomized controlled trial(2023) BELIZARIO, Gabriel; DUARTE, Cicera; NEVES, Lucas; MATHIAS, Karla; LAFER, Beny- Predominant polarity classification and associated clinical variables in bipolar disorder: A machine learning approach(2019) BELIZARIO, Gabriel Okawa; BORGES JUNIOR, Renato Gomes; SALVINI, Rogerio; LAFER, Beny; DIAS, Rodrigo da SilvaBackground: Bipolar disorder (BD) is a severe psychiatric disorder characterized by periodic episodes of manic and depressive symptomatology. Predominant polarity (PP) appears to be an important specifier of BD. The present study employed machine learning (ML) algorithms to accurately determine a patient ' s PP without the inclusion of number and polarity of past episodes, while exploring associations between PP and demographic and clinical variables. Methods: From a cohort of 148 BD patients, demographic and clinical variables were collected using a customized questionnaire and the SCID-CV. The algorithm employed was the Random-Forest method. The algorithm was programed to classify patients into either depressive or manic predominant polarities and to reveal which variables were associated to the specifier. Results: The algorithm attained an AUC ROC of 74.72% (95% CI = 72.29-77.15%) in classifying patients into either manic or depressive PP. The variables selected by the algorithm were: (1) age at first depressive episode; (2) number of hospitalizations; (3) BD Type II; (4) manic onset; (5) delusions; (6) psychotic features at onset; (7) tobacco addiction; (8) family history of BD; (9) hallucinations; and (10) comorbid anxiety disorders, (11) alcohol dependence, (12) eating disorders and (13) substance dependence. Limitations: The study is limited due to the small sample size, the inclusion of only self-reported and clinician-observed clinical variables and its cross-sectional design. Discussion: The results suggest that the ML approach could be effective in determining a patient ' s PP. Furthermore, although not previously reported, some variables, such as tobacco use and comorbid eating disorders, appear to be closely associated with PP.
conferenceObject Structured physical exercise in bipolar depression: A pilot study(2020) DUARTE, Cicera; BELIZARIO, Gabriel O.; MATHIAS, Karla; SILVA, Michele; ROBERTO, Paulo; GREVE, Julia; LAFER, Beny- Cognitive behavioral rehabilitation for bipolar disorder patients: A randomized controlled trial(2019) GOMES, Bernardo C.; ROCCA, Cristiana C.; BELIZARIO, Gabriel O.; FERNANDES, Francy de B. F.; VALOIS, Iolanda; OLMO, Giselle C.; FACHIN, Raquel V. P.; FARHAT, Luis C.; LAFER, BenyObjectives Bipolar disorder is frequently associated with cognitive impairment even during euthymia. Previous studies have reported significant impairments in functional and quality of life outcomes and a possible relationship between these variables and cognitive performance. Cognitive rehabilitation interventions have been proposed to address these outcomes but positive results are still scarce. The objective of the present study is to evaluate the efficacy of a new intervention developed to address both cognitive and functional impairment. Methods Thirty-nine individuals were included in this randomized controlled trial. All participants were evaluated by the Cambridge Neuropsychological Test Automated Battery (CANTAB) and completed functional and quality of life (QOL) scales. Patients were randomized to either treatment as usual (TAU) or Cognitive Behavior Rehabilitation (CBR), an add-on treatment delivered in 12 weekly group sessions. All individuals were revaluated after 12 weeks. Results A total of 39 bipolar type I or II patients were included in the analysis, 19 in the TAU group and 20 in the CBR condition. At the entrance of the study, both groups were statistically similar regarding clinical, socio-demographics and cognitive variables. After the end of the intervention, CBR individuals had significantly improved reaction time, visual memory and emotion recognition. In contrast, individuals in the CBR did not present a statistically change in functional and QOL scores after the 12-week intervention. Conclusions CBR intervention showed promising results in improving some of the commonly impaired cognitive domains in BD. A longer follow-up period may be necessary to detect changes in functional and QOL domains.
conferenceObject Cognitive profile of bipolar disorder patients: A 12-year prospective study(2019) WOSNES, C. J.; ROCCA, C. C.; BELIZARIO, G. O.; LAFER, B.; NUNES, P. V.conferenceObject Impaired social cognition in bipolar disorder: A meta-analysis of theory of mind in euthymic patients(2020) ROTENBERG, Luisa deSiqueira; BELIZARIO, Gabriel O.; BERALDI, Gabriel; LAFER, BenyconferenceObject The impact of cannabis use on the course of bipolar disorder: A 8-year longitudinal study(2023) ESPINDOLA, Fernanda; RAMALHO, Alana; BELIZARIO, Gabriel Okawa; LAFER, BenyconferenceObject Predominant polarity determination from a machine learning approach(2018) BELIZARIO, G.; BORGES JUNIOR, R.; SALVINI, R.; LAFER, B.; DIAS, R.conferenceObject Quality of life is associated with clinical outcome in BD: a longitudinal study(2018) SILVA, M.; BELIZARIO, G. O.; ABREU, L. N.; LAFER, B.- Quality of life and clinical outcomes in bipolar disorder: An 8-year longitudinal study(2021) KHAFIF, Tatiana Cohab; BELIZARIO, Gabriel Okawa; SILVA, Michelle; GOMES, Bernardo Carramao; LAFER, BenyObjectives: This longitudinal study examined the relationship of Quality of Life (QOL) throughout an 8-year follow-up period with baseline and longitudinal clinical variables indicative of outcome in patients with Bipolar Disorder (BD). Methods: 36 participants, ages 18-70, were recruited from the Bipolar Disorder Research Program (PROMAN) outpatient clinic. Participants completed the WHOQOL-BREF questionnaire in 2009 (baseline), 2015 (6-years) and 2017 (8-years), with high scores being associated with better quality of life. Baseline clinical variables were collected through the Structured Clinical Interview for DSM-IV (SCID-IV) and a structured baseline interview for demographic and clinical assessment. Longitudinal clinical variables were collected through medical records, including mood charts and mood symptoms scales. Results: The results suggest that the QoL, as measured by the WHOQOL-BREF scale, is negatively affected by depressive episodes and is rather stable throughout the course of patients diagnosed with BD. In our study, all three scores were negatively correlated to depressive episodes, and one WHOQOL-BREF score was positively correlated to manic episodes, suggesting that higher scores, both at baseline and throughout the course of the disorder, may be associated to a higher occurrence of manic episodes, while lower QoL scores may be predictive of a higher occurrence of depressive episodes. Also, all three scores revealed significant positive correlations between themselves, suggesting QoL, as measured by the WHOQOL-BREF, remained constant throughout the 8 year observed period. Finally, patients presenting Obsessive Compulsive Disorder (OCD), Post-Traumatic Stress Disorder (PTSD) and substance abuse comorbidities revealed consistent lower WHOQOL-BREF scores, suggesting that these comorbidities may be an important predictor of QoL in BD patients.