Modelo animal para estudo do temperamento : relevância para os transtornos de humor

Temperamento é hereditário e relativamente estável no padrão de emoções básicas tais como medo e raiva. Nós exploramos traços de temperamento em camundongos para selecionar fenótipos distintos com extremos de temperamento. Em um ambiente novo (campo aberto) com objeto central, dois grupos de 15 animais a partir de 79 foram selecionados e separados de acordo com alta e baixa exploração do objeto para compor os grupos de alto e baixo exploradores, respectivamente. O desempenho destes animais foi idêntico no mesmo teste uma semana depois e se manteve distinto oito meses depois, sugerindo a presença de traços de temperamento. Estes camundongos foram posteriormente testados em outras tarefas comportamentais. Comparados aos baixo exploradores, os camundongos alto exploradores foram menos ansiosos no claro-escuro e no labirinto em cruz elevado, mostraram aumento na locomoção no campo aberto, apresentaram melhor desempenho no decorrer dos testes do Labirinto de Lashley (estímulo apetitivo) e tiveram alta latência para descer da plataforma no teste de esquiva inibitória (estímulo aversivo). Camundongos alto exploradores se mostraram agressivos no teste de intruso, enquanto que os baixo exploradores se mostraram passivos ou submissos. Estes resultados mostram que diferenças individuais no temperamento influenciam grande parte dos comportamentos em camundongos. Esse perfil comportamental dos camundongos alto e baixo exploradores se assemelha a temperamentos depressivos e hipertímicos de pacientes com depressão unipolar e bipolar.

Personalidade e sua relação com transtornos de ansiedade e de humor: Uma análise da produção científica brasileira na abordagem cognitivo-comportamental

Personality is one of the most controversial and intriguing theme in Psychology. In a general way, it could be understood as a set of rigid patters of feelings, thoughts, and behaviors from an individual. The aim of this investigation was describe how Brazilian researches in Psychology that use cognitive, behavioral, and cognitive-behavioral therapy referential have been approaching the subject Personality in their work. We also intended to determine the frequency of publications on Personality Disorders to compare this data with the bibliographical production on Anxiety and Mood Disorders. Moreover, we tried to describe how the Personality construct - and even Personality Disorders construct - has been addressed in the work on the Anxiety and Mood Disorders chosen for this review. The PePSIC Periódicos Eletrônicos em Psicologia - e SciELO.ORG - Scientific Electronic Library Online - databases were used for research. We investigated 53 journals, including two specific Cognitive Therapies and Behavioral-Cognitive Therapy (TCC) periodicals. Within each journal, we undertook a systematic survey on publications on the themes: Personality, Personality Disorder, Panic Disorder, Social Phobia, Obsessive-Compulsive Disorder (OCD), Generalized Anxiety Disorder, Major Depression, Dysthymia and Bipolar Disorder. A preliminary research has resulted in 218 articles. A second filter has obtained 81 articles in which we the focused on this review. There were found thirty-eight articles on Anxiety Disorders, twenty-five on Mood Disorders and eighteen on Personality Disorders. It was found that 90% of the papers on Anxiety Disorders make no reference to the term Personality or make it in a discrete way. This number rises to 96% to Personality Disorder group. Analyzing the specific journals on TCC we verified that 97% of the articles on Anxiety and Humor disorders do not cite the term Personality or cite but not explore it. This results point to the low rate of studies addressing the Personality and personality disturbs. Then, we can suggest that the difficulty on treating this Axis II disturbs has been worsened by lack of knowledge produced on the subject, either for lack of interest among researchers or because of the methodological obstacles found on this field.

O mau humor na TPM: uma interpretação do feminino

Em O mau humor da TPM: uma interpretação do feminino propomos mostrar como são construídas algumas representações do feminino a partir da sua relação com a menstruação e discutir alguns significados culturais acerca dos transtornos de humor derivado de uma síndrome comumente conhecida como a tensão pré-menstrual. A partir de um recorte teórico do corpo e do olhar médico sobre este enquanto objetos das ciências sociais, isto é, como construções sociais, e tendo como orientação os estudos feministas, analisamos dois tipos de discursos circulantes acerca da menstruação, localizados nas camadas médias cariocas, no início do século XXI, que dizem representar ou dialogar com este corpo hormonal. Estes seguem duas direções diferentes: o primeiro discurso analisado é um livro de um médico, no formato de literatura de auto-ajuda, voltado para a discussão da inteligência hormonal; que pretende ser um modelo de subjetivação do feminino, baseado no olhar médico-científico. Este propõe um controle sobre o corpo, organizando o feminino a partir de idéias essencializadas as quais universalizam os corpos e tratam das descrições desse feminino como pré-determinadas por condições localizadas no corpo Natural. O segundo é um conjunto de entrevistas realizadas com bancárias, que registram o feminino subjetivado. Estes discursos sobre a vivência do feminino, apesar de também articularem descrições corporais enraizadas na biologia e nas ciências médicas, revelam ainda outros significados culturais representativos, destacando assim a importância dos estudos que privilegiam o agenciamento do sujeito na construção social de gênero, no caso desses femininos.

Alterações na evocação de uma memória aversiva ao liongo do ciclo estral de ratas: influências da transmissão gabaérgica na amígdala

GABAergic neurotransmission has been implicated in many aspects of learning and memory, as well as mood and anxiety disorders. The amygdala has been one of the major focuses in this area, given its essential role in modulating emotionally relevant memories. However, studies with male subjects are still predominant in the field. Here we investigated the consequences for an aversive memory of enhancing or decreasing GABAergic transmission in the basolateral nucleus of the amygdala (BLA). Wistar female rats were trained in the plus-maze discriminative avoidance task, in which they had to learn to avoid one of the enclosed arms where an aversive stimulus consisting of a bright light and a loud noise was given (day 1). Fifteen minutes before the test session (day 2) animals received 0,2 μL infusions of either saline solution, the GABAergic agonist muscimol (0,05 mg/ml), or the GABAergic antagonist bicuculine (0,025 mg/ml) bilaterally intra-BLA. On the test day, females in proestrous or estrous presented adequate retrieval and did not extinguish the task, while females in metestrous or diestrous presented impaired retrieval. In the first group, muscimol infusion impaired retrieval and bicuculline had no effect, suggesting naturally low levels of GABAergic transmission in the BLA of proestrous and estrous females. In the second group, muscimol infusion had no effect and bicuculline reversed retrieval impairment, suggesting naturally high levels of GABAergic transmission in the BLA of metestrous and diestous females. Additionally, proestrous and estrous females presented higher anxiety levels compared to metestrous and diestrous females, which could explain better performance of this group. On the other hand, BLA GABAergic system did not interfere with the innate fear response because drug infusions had no effect in anxiety. Thus, retrieval alterations caused by the GABAergic drugs were probably related specifically to memory processes

Mulheres com lúpus eritematoso sistêmico: sintomas depressivos e apoio social percebido

Systemic Lupus Erythematosus (SLE) is a chronic autoimmune disease, rare, multisystem, with a very heterogeneous clinical and serological manifestations standard. The patient, in addition to suffering injuries on his physical and physiological functioning, may also face a number of psychosocial problems. Research indicates that SLE can cause significant damage to the psychological realm, especially with the presence of anxiety and depression. In 1999, the American College of Rheumatology (ACR), proposed the establishment of 19 neuropsychiatric clinical syndromes attributed to SLE. Depression lies between mood disorders and is one of the most common psychiatric manifestations in this group, being found more frequently in these patients than in the general population. Studies also suggest that social support plays an important role in the development of coping strategies, in SLE management and depression. This study has as main objective verify the association between depressive symptoms and perceived social support in patients with SLE. The specific objectives turned to: investigte the prevalence of depressive symptoms; investigate the perceived social support and verify if there is an association between depression, social support and sociodemographic variables. We used a sociodemographic questionnaire, the Beck Depression Scale, and the Perceived Social Support Scale. The analysis was performed through descriptive and inferential statistics. The final sample could count with 79 SLE women, with an average age of 35.7 years. 44 (55.7%) of the participants were married. Only 6 (7.59%) had completed higher education and 32 (40.51%) have not finished high school. Seventy-one (89.87%) had an income below three minimum salaries and 71 (89.87) practiced a religion, and the Catholic (67.71%) was the most mentioned by them. Of the total sample, 37 (46.74%) had been diagnosed SLE more than 7 years before, and 25 (31.65%) had the disease for more than 10 years. Only 19 (24.05%) had some work activity. Forty-two of them (53.17%) had depressive symptoms levels from mild to severe, and 51 (64.46%) reported pain levels of 5, or above. The study found a significant association between depressive symptoms and pain (p = 0.013) and depressive symptoms and work activity (p = 0.02). When we examined the perception of social support, the results showed high levels among participants. Using the Spearman correlation test we found a strong correlation between depressive symptoms and social support (p= 0,000037). It means that the higher the frequency of support, the lower the score of depression. These findings are relevant because depressive symptoms in patients with SLE have a multicausal and multifactorial character and may remain unnoticed, since many of them are confused with the manifestations of the disease. This fact requires a careful assessment from professionals, not only in the clinical setting, but also considering other psychosocial reasons, that may be influencing the emergence or worsening of symptoms. These results also corroborate other studies, which not only confirm the predictive role of social support in the physical wellbeing, but also in the psychological.

Mulheres com lúpus eritematoso sistêmico: sintomas depressivos e apoio social percebido

Systemic Lupus Erythematosus (SLE) is a chronic autoimmune disease, rare, multisystem, with a very heterogeneous clinical and serological manifestations standard. The patient, in addition to suffering injuries on his physical and physiological functioning, may also face a number of psychosocial problems. Research indicates that SLE can cause significant damage to the psychological realm, especially with the presence of anxiety and depression. In 1999, the American College of Rheumatology (ACR), proposed the establishment of 19 neuropsychiatric clinical syndromes attributed to SLE. Depression lies between mood disorders and is one of the most common psychiatric manifestations in this group, being found more frequently in these patients than in the general population. Studies also suggest that social support plays an important role in the development of coping strategies, in SLE management and depression. This study has as main objective verify the association between depressive symptoms and perceived social support in patients with SLE. The specific objectives turned to: investigte the prevalence of depressive symptoms; investigate the perceived social support and verify if there is an association between depression, social support and sociodemographic variables. We used a sociodemographic questionnaire, the Beck Depression Scale, and the Perceived Social Support Scale. The analysis was performed through descriptive and inferential statistics. The final sample could count with 79 SLE women, with an average age of 35.7 years. 44 (55.7%) of the participants were married. Only 6 (7.59%) had completed higher education and 32 (40.51%) have not finished high school. Seventy-one (89.87%) had an income below three minimum salaries and 71 (89.87) practiced a religion, and the Catholic (67.71%) was the most mentioned by them. Of the total sample, 37 (46.74%) had been diagnosed SLE more than 7 years before, and 25 (31.65%) had the disease for more than 10 years. Only 19 (24.05%) had some work activity. Forty-two of them (53.17%) had depressive symptoms levels from mild to severe, and 51 (64.46%) reported pain levels of 5, or above. The study found a significant association between depressive symptoms and pain (p = 0.013) and depressive symptoms and work activity (p = 0.02). When we examined the perception of social support, the results showed high levels among participants. Using the Spearman correlation test we found a strong correlation between depressive symptoms and social support (p= 0,000037). It means that the higher the frequency of support, the lower the score of depression. These findings are relevant because depressive symptoms in patients with SLE have a multicausal and multifactorial character and may remain unnoticed, since many of them are confused with the manifestations of the disease. This fact requires a careful assessment from professionals, not only in the clinical setting, but also considering other psychosocial reasons, that may be influencing the emergence or worsening of symptoms. These results also corroborate other studies, which not only confirm the predictive role of social support in the physical wellbeing, but also in the psychological.

Saúde mental e gênero em um CAPS II de Brasília : condições sociais, sintomas, diagnósticos e sofrimento psíquico

Tese (doutorado)—Universidade de Brasília, Instituto de Psicologia, Departamento de Psicologia Clínica, Programa de Pós-graduação em Psicologia Clínica e Cultura, 2016.

Avaliação comportamental e neuroquímica de ratos em dessincronização forçada: possíveis implicações para um modelo animal de oscilações no humor

Bipolar disorder has been growing in several countries. It is a disease with high mortality and has been responsible by the social isolation of the patients. Bipolar patients have alterations in circadian timing system, showing a phase shift in various physiological variables. There are several arguments demonstrating alterations in circadian rhythms may be part of the bipolar disorder pathophysiology. Given the necessity for further elucidation, the goal of this study was to validate the forced desynchronization protocol as an animal model for bipolar disorder. To do this, Wistar rats were submitted to a forced desynchronization protocol which consists in a symmetrical light dark cycle with 22h. Under this protocol, rats dissociate the locomotor activity rhythm into two components: one synchronized to the light / dark cycle with 22h, and another component with period longer than 24 hours following the animal endogenous period. These rhythms with different periods sometimes there is coincidence, which we named CAP (Coincidence Active Phase) and the opposite phase, non-coincidence, called NCAP (Non-Concidence Active Phase). The hypothesis is that in CAP animals present a mania-like behavior and animals in NCAP depressive-like behavior. We found some evidence described in detail throughout this thesis. In sum, the animals under forced desynchronization protocol were more stressed, showed an increase in stereotypic behaviors such as grooming and reduction in other behaviors such as risk assessment and vertical exploration when compared to the control group. The CAP animals showed increased locomotor activity, especially during the dark phase when compared to controls (rats under T24) and less depressive behavior in the forced swim test. The animals in NCAP showed a higher anxiety in elevated plus maze, but they don t have ahnedonia. The animals under dissociation have more labeled 5HT1A cells at the amygdala area, which appoint that they have more amygdala inhibition. Taking these data together, we could partially validated the forced desynchronization protocol as an animal model for mood oscillations

Como os sintomas de transtornos mentais e comportamentais influenciam a memória operacional de universitários?

Pós-graduação em Psicologia do Desenvolvimento e Aprendizagem - FC

Estudo de associação entre disfunção neurocognitiva, estresse oxidativa e polimorfismos em pacientes jovens com Transtornos Bipolar tipo I

O Transtorno Bipolar (TB) tipo I é uma doença caracterizada por episódios de mania e depressão recorrentes com importante prejuízo do funcionamento global e comprometimento das funções cognitivas. Além disso, sabe-se que o número de episódios de humor patológico ao longo da vida pode também influenciar o funcionamento cognitivo destes sujeitos. Neste cenário, ocorreu a necessidade de se investigar marcadores genéticos para disfunção cognitiva no TB com o objetivo de estudar este fenômeno. Dentre os potenciais genes responsáveis por influenciar a cognição destacam-se os polimorfismos funcionais do fator neurotrófico derivado do cérebro (BDNF), da catecol-O-metiltransferase (COMT), da apolipoproteína-E (APOE) e do canal de cálcio de baixa voltagem subunidade 1-C (CACNA1C). Sabe-se, também, que no TB os marcadores de estresse oxidativo estão aumentados durante todas as fases da doença, entretanto, não é claro qual impacto destes na disfunção cognitiva de indivíduos com TB. O objetivo dessa tese foi avaliar o desempenho cognitivo de pacientes jovens com bipolaridade tipo I e sua associação com o genótipo de BDNF, COMT, APOE e CACNA1C e também com os níveis plasmáticos de oxidação da guanosina (8-OHdG) e citosina (5-Mec) durante os episódios de humor, eutimia e em controles. Para investigar essa associação foram incluídos 116 pacientes (79 em episódio de humor patológico e 37 eutímicos) com diagnóstico de TB tipo I (DSMIV-TR); 97 controles saudáveis foram submetidos à avaliação neuropsicológica e coleta de sangue para extração de DNA visando genotipagem para BDNF (rs6265), COMT (rs4680; rs165599), APOE (rs429358 e rs7412), CACNA1C (rs1006737), 8-OhdG e 5-Mec. A análise dos dados obtidos revelou que pacientes portadores do genótipo Met/Met rs4680/rs165599 do COMT apresentam comprometimento cognitivo mais grave (função executiva, fluência verbal, memória e inteligência) comparado ao genótipo Val/Met ou Val/Val durante episódios maníacos ou mistos. Na mesma direção destes resultados, verificou-se que pacientes portadores do alelo Met rs4680 do COMT apresentam comprometimento do reconhecimento de emoções faciais em episódios de mania e depressão. Nenhum efeito do COMT foi observado em controles. O alelo de risco Met do CACNA1C se associou a um pior comprometimento executivo independente dos sintomas maníacos ou depressivos no TB, porém nenhum efeito se observou nos controles. O alelo Met do BDNF rs6265 ou a presença do alelo 4 da APOE não representa um fator que identifique um grupo com desempenho cognitivo diferenciado durante as fases do TB ou em controles. Sujeitos com TB apresentaram níveis mais elevados de 8-OHdG e tais níveis eram diretamente proporcionais ao número de episódios maníacos ao longo da vida, sugerindo um papel dos episódios hiperdopaminérgicos na oxidação das bases de DNA. Concluiu-se que a genotipagem para COMT e CACNA1C em pacientes com TB pode identificar um grupo de pacientes associados a pior disfunção cognitiva durante as fases maníacas e mistas do TB. Tal dado pode ser um indicador do envolvimento do sistema dopaminérgico e dos canais de cálcio de baixa voltagem na fisiopatologia da disfunção cognitiva no TB e deve ser explorado em outros estudos

Tweeted joke lifespans and appropriated punch lines: Practices around topical humor on social media

During the coverage of breaking news and broadcasts on social media, journalists and audiences alike share links, comments, and opinions in response to new developments. On Twitter, such content can gain increased visibility by receiving retweets from other users, through automated functions, or by manually republishing and modifying comments. This article studies tweeted coverage of the doping scandal involving Lance Armstrong in 2012 and 2013. Humorous framing is found to be popular in this discussion, and such comments experience different longevity to breaking news tweets. With these patterns come new opportunities for users to modify and appropriate punch lines in attempts to receive increased attention—and for the serendipitous creation of similar jokes—which raise questions of authorship and attribution.

Humor y retórica: Antiochikós o Misopógon de Juliano

Presentado en las Jornadas sobre "El humor (y los humores) en el mundo antiguo", organizado por el Departamento de Estudios Clásicos y el Instituto de Ciencias de la Antigüedad de la UPV y celebrado en Vitoria-Gasteiz los días 16 y 17 de octubre de 2007.

Humor y comicidad en el misántropo: la evolución del tipo desde el ámbito dramático (Menandro y Molière) hasta la narrativa (Villalonga, Moravia y Castellani)

Presentado en las Jornadas sobre "El humor (y los humores) en el mundo antiguo", organizado por el Departamento de Estudios Clásicos y el Instituto de Ciencias de la Antigüedad de la UPV y celebrado en Vitoria-Gasteiz los días 16 y 17 de octubre de 2007.

Humor y comicidad: la aportación freudiana

Presentado en las Jornadas sobre "El humor (y los humores) en el mundo antiguo", organizado por el Departamento de Estudios Clásicos y el Instituto de Ciencias de la Antigüedad de la UPV y celebrado en Vitoria-Gasteiz los días 16 y 17 de octubre de 2007.