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1.
Complex Psychiatry ; 10(1-4): 1-9, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38221939

RESUMO

Introduction: During the coronavirus disease 2019 (COVID-19) pandemic, university students experienced unusual environmental stresses, and the number of university students with depressive symptoms increased. The pandemic had a profoundly negative impact on the mental health of first-year students because they were not prepared to face academic and social stresses. The purpose of this study was to investigate the effect of the COVID-19 pandemic on depressive symptoms, eating behaviors, and stress-coping ability among first-year university students. Methods: A total of 8,424 first-year students, 2,043 males and 1,636 females who entered university in Japan in 2021-2022 (during the pandemic) and 2,912 males and 1,833 females who entered university in Japan in 2018-2019 (before the pandemic), participated. We investigated the differences in depressive symptoms (using Beck Depression Inventory II [BDI-II]), eating behaviors (using Eating Attitudes Test-26 [EAT-26] and Bulimic Inventory Test, Edinburgh [BITE]), and stress coping (using Coping Inventory for Stressful Situations [CISS], which has three subscales) between first-year students before and during the pandemic. We divided the students into three categories (clinical, subthreshold, and nonsymptomatic) according to depressive symptoms and eating behaviors based on BDI-ll and EAT-26 scores and compared the frequencies of the three categories at two time points. Results: First-year students during the pandemic showed a higher percentage of depressive symptoms, including clinical and subthreshold levels, than first-year students before the pandemic but did not show disordered eating behaviors. Additionally, the CISS task-oriented score was significantly lower for students with depressive symptoms, including clinical and subthreshold levels, during the pandemic than before the pandemic in females. Conclusions: This study suggests that it may be important to provide first-year university students with more information about depressive symptom awareness, including clinical and subthreshold levels, and to provide appropriate ways for stress coping from many angles and early support in pandemic conditions.

2.
Psychopathology ; 56(4): 276-284, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36509080

RESUMO

INTRODUCTION: The number of young adults with eating disorders or subthreshold eating disorders has increased recently. Although disordered eating behaviors persist once they appear, there have been relatively few studies on factors that might cause disordered eating behaviors. The purpose of this study was to investigate how the eating attitudes of young adults change over time and the risk factors that increase disordered eating behaviors. METHODS: A total of 1,141 college students, 639 males and 502 females, participated. We investigated changes in eating attitudes (using EAT-26 and BITE), depressive symptoms (using BDI-II), and stress coping (using CISS, which has three subscales) between 2 time points: at college entrance and in the fourth year of college. We divided the students into three groups (clinical, subthreshold, and healthy) based on EAT-26 scores and compared their BDI-II and CISS scores. Next, we identified students who developed disordered eating behaviors, both clinical and subthreshold, during their time at college (exacerbated students) and compared depressive symptoms and stress coping styles between exacerbated students and healthy students (unchanged students). RESULTS: The students in the subthreshold group (both males and females) scored significantly higher on the BDI-II and emotion-oriented coping (CISS-E) than the students in the healthy group at college entrance. Additionally, the exacerbated students (both males and females) scored significantly higher on the CISS-E in the fourth year than unchanged students. The female exacerbated students scored significantly higher on the BDI-II than female unchanged students at both time points. CONCLUSIONS: Our results show that depressive symptoms and nonadaptive stress coping are associated with an increased risk of disordered eating behaviors. This study suggests that early intervention may be necessary for both the clinical and subthreshold groups. The key to early intervention may be to manage not only eating behaviors but also depressive symptoms and stress coping.


Assuntos
Transtornos da Alimentação e da Ingestão de Alimentos , Masculino , Adulto Jovem , Humanos , Feminino , Estudos de Coortes , Inquéritos e Questionários , Transtornos da Alimentação e da Ingestão de Alimentos/epidemiologia , Atitude , Estudantes , Universidades
3.
Am J Infect Control ; 51(8): 907-911, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-36435404

RESUMO

BACKGROUND: Although the COVID-19 Omicron BA.1 subvariant was initially predominant, the BA.2 subvariant has now replaced it. Effectiveness of a booster dose vaccination for BA.2 remains unclear among university students. METHODS: We enrolled 562 Japanese university students who became a close contact and underwent polymerase chain reaction testing. We compared infection rates and cumulative incidence rates of severe fever among the students according to the COVID-19 vaccine doses received between BA.1-dominant (January 1-March 31, 2022) and BA.2-dominant (April 1-July 31, 2022) periods. RESULTS: Infection rates for BA.1 were 32% with 3 doses, 49% with 2 doses, and 68% in the unvaccinated (P = .008). The odds ratio (OR) for infection following 3 doses during BA.1 was 0.46 (95% confidence interval [CI] = 0.25-0.82, P = .009). Infection rates for BA.2 were 45% with 3 doses, 62% with 2 doses, and 64% in the unvaccinated (P = .02). The OR for infection following 3 doses during BA.2 was 0.50 (95% CI = 0.31-0.82, P = .006). Effectiveness of vaccine for BA.2 tended to decrease for both 3 (45% vs 32%, P = .06) and 2 doses (62% vs 49%, P = .07) compared with those for BA.1. CONCLUSIONS: Booster dose effectiveness tended to decrease but remained significant against BA.2 subvariant predominancy among Japanese university students.


Assuntos
Vacinas contra COVID-19 , COVID-19 , Humanos , Universidades , COVID-19/prevenção & controle , Razão de Chances , Estudantes
4.
Vaccines (Basel) ; 10(8)2022 Aug 09.
Artigo em Inglês | MEDLINE | ID: mdl-36016171

RESUMO

With the spread of the Coronavirus disease 2019 (COVID-19), missing learning opportunities due to COVID-19 has been raised as a major concern for university education. We aimed to examine the effectiveness of a booster dose of COVID-19 vaccines among Japanese university students during the spread of the Omicron variant. We enrolled 249 students who became a close contact and 294 COVID-19-infected students though the Hiroshima University COVID-19 registration system. Infection rates of people in close contact with sick individuals and symptoms of infected students were examined. Close contacts who had received a booster dose showed a significantly lower infection rate (31%) compared with those with two doses (50%, p = 0.02) and the unvaccinated (71%, p = 0.002). Age- and sex-adjusted odds ratios of receipt of a booster dose vs. two doses and unvaccinated were 0.40 (95% confidence interval [CI], 0.23−0.70, p = 0.001) and 0.44 (95% CI, 0.25−0.77, p = 0.004), respectively. The incidence of severe fever (38.5°C or higher) was significantly less prevalent in those with a booster dose (16%) compared with two doses (40%, p = 0.002) and those who were unvaccinated (75%, p < 0.0001). Booster doses reduced infection rates among close-contact students and can help students to avoid missing learning opportunities.

5.
Vaccines (Basel) ; 10(6)2022 May 27.
Artigo em Inglês | MEDLINE | ID: mdl-35746471

RESUMO

BACKGROUND: It is said that safe and effective vaccination is an important tool to end the COVID-19 pandemic. However, recent studies have reported hesitation, especially in young adults. Promoting the vaccination of university students, who represent the young adults, will lead to infection prevention measures. The purpose of this study was to clarify to compare the vaccination rates, attitudes toward vaccines, and post-vaccination behavior of students and faculty members in order to understand the actual situation of young population. METHODS: We conducted large-scale vaccination of Hiroshima University from 21 June to 18 September 2021. This cross-sectional survey was conducted via e-mail from 27 September to 3 October 2021. RESULTS: The number of second inoculations was 10,833 /14,154 students (76.5%), and 2240/2583 staff members (86.7%). Regarding the impressions after vaccination, the most common answer was "I was able to prevent worsening of the disease even if I was infected". Many students answered that their range of activities had expanded after vaccination. However, many students (n = 1799, 87.8%) answered as having "no change after vaccination" regarding infection prevention. CONCLUSION: The high vaccination rate in this survey was thought to be due to the increased sense of security and confidence in the vaccine. The fact that young adults who perform a wide range of activities are careful about infection prevention may be one of the factors that prevents the explosive spread of infection in Japan.

6.
Neuropsychiatr Dis Treat ; 14: 2633-2641, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30349261

RESUMO

BACKGROUND: No significant effect of psychological treatment has been reported from meta-analysis of subthreshold depression patients and control subjects at 1-year follow-up. However, behavioral activation is a simpler and more cost-effective treatment than cognitive behavioral therapy. The primary purpose of this study was to assess by comparison to an assessment-only control group whether the effects of behavioral activation program for depressive symptoms can persist up to 1-year follow-up without the use of antidepressants or other psychotherapy. PATIENTS AND METHODS: Late adolescent students were the population targeted in this study. Participants were allocated randomly to an intervention group (n=62) or a control group (n=56). Treatment consisted of five-weekly 60-minute sessions. Participants underwent a structured interview and completed self-report scales at 1 year post-assessment. RESULTS: Late adolescent students receiving treatment had significantly lower mean Beck Depression Inventory, second edition scores at 1-year follow-up than control group students. The effect size (Hedges' g) for between-group differences at 1-year follow-up was -0.41. CONCLUSION: Our behavioral activation program is simple and short. Nevertheless, the results obtained at 1-year follow-up of the control group and late adolescent students receiving treatment indicated a significant difference in their Beck Depression Inventory, second edition scores. Our 5-week behavioral activation program based on behavioral characteristics for subthreshold depression might be promising for subthreshold depression. The sample examined for this study imposed some study limitations.

7.
Neuropsychiatr Dis Treat ; 14: 2159-2164, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30214205

RESUMO

BACKGROUND: A Japanese study revealed that 20.7% of first-year undergraduate students had a major depressive episode during the previous 12 months: first-year undergraduate students with depression need early support. Reportedly, antidepressant medication use during adolescence is associated with modestly increased risk of suicidality. This case study of a late-adolescent woman with depression illustrates the effects of behavioral activation without psychotropic medication. CASE PRESENTATION: A first-year undergraduate student was diagnosed as having major depressive disorder. From earlier studies, we developed a behavioral activation program for late-adolescent people with major depressive disorder. Behavioral activation administered in 10 weekly 60-minute sessions decreased depressive symptoms, avoidant behaviors, and rumination. Moreover, the Beck Depression Inventory, second version score was 1 at 1-year follow-up. CONCLUSION: Results of this case study show that behavioral activation is effective without psychotropic medication. Future studies of large samples must be conducted to assess the effectiveness of behavioral activation without psychotropic medication for depression in late adolescence.

8.
BJPsych Open ; 4(5): 317-323, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30070201

RESUMO

BACKGROUND: Behavioural activation is an efficient treatment for depression and can improve intrinsic motivation. Previous studies have revealed that the frontostriatal circuit is involved in intrinsic motivation; however, there are no data on how behavioural activation affects the frontostriatal circuit.AimsWe aimed to investigate behavioural activation-related changes in the frontostriatal circuit. METHOD: Fifty-nine individuals with subthreshold depression were randomly assigned to either the intervention or non-intervention group. The intervention group received five weekly behavioural activation sessions. The participants underwent functional magnetic resonance imaging scanning on two separate occasions while performing a stopwatch task based on intrinsic motivation. We investigated changes in neural activity and functional connectivity after behavioural activation. RESULTS: After behavioural activation, the intervention group had increased activation and connectivity in the frontostriatal region compared with the non-intervention group. The increased activation in the right middle frontal gyrus was correlated with an improvement of subjective sensitivity to environmental rewards. CONCLUSIONS: Behavioural activation-related changes to the frontostriatal circuit advance our understanding of psychotherapy-induced improvements in the neural basis of intrinsic motivation.Declaration of interestNone.

9.
Biopsychosoc Med ; 12: 8, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29849751

RESUMO

BACKGROUND: The aim of this study was to examine the necessity of early intervention for students with potential bulimia by investigating how the eating attitudes of college students change and examining the relation between bulimic symptoms and depressive symptoms or the ability to cope with stress. METHODS: The study participants were students who entered Hiroshima University in 2014. This study was conducted at two time points: Time-1 in 2014 and Time-2 in 2017. The Eating Attitudes Test-26 (EAT-26), Bulimic Inventory Test, Edinburgh (BITE), Beck Depression Inventory-II (BDI-II), and Coping Inventory for Stressful Situations (CISS) were administered at Times 1 and 2, and the responses were compared between the time points. Next, we compared the BDI-II scores of the BITE improved and worsened groups. In addition, we divided the participants into a clinical group, subthreshold group, and healthy group based on the BITE score at Time-1to compared their depressive symptoms and the ability to cope with stress. RESULTS: Significantly higher BITE and BDI-II scores were recorded for both males and females at Time-2 than at Time-1. The BDI-II score at Time-1 was significantly higher in the BITE worsened group than in the BITE improved group. The BDI-II scores at Time-1 were significantly higher for both males and females in the subthreshold group than in the healthy group. Furthermore, significantly higher CISS-T and CISS-E scores were recorded at Time-1 for females in the subthreshold group than for females in the healthy group. CONCLUSIONS: Based on these results, intervention for students the subthreshold group is important, and the key to intervention may be to address not only eating behaviors but also depressive symptoms and stress coping. TRIAL REGISTRATION: UMIN000029474 Registered 9 October, 2017 (retrospectively).

10.
J Eat Disord ; 5: 52, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29177049

RESUMO

BACKGROUND: Cognitive-behavioral therapy (CBT) has been recommended for the treatment of eating disorders, and group therapy is known to have certain advantages over individual therapy. The aim of the current study was to compare the 10-year prognosis of patients who completed integrated group CBT with those who dropped out and to examine the effect of completion of group CBT on the prognosis. METHODS: The participants were 65 adult patients with eating disorders. All patients were women and Japanese. The average age (19-37) of the patients was 25.1 ± 3.8 years, and the average body mass index (BMI) was 17.7 ± 2.0. We conducted integrated group CBT with the patients and compared eating disorder symptoms, mood states, coping styles, and self-esteem before and after therapy. Furthermore, we compared clinical features and the 10-year prognosis of patients who completed the treatment and those who dropped out. RESULTS: After 10 sessions of group therapy, Eating Attitudes Test scores, Profile of Mood States depression scores, and Coping Inventory for Stressful Situations emotion-oriented scores decreased, while Rosenberg's Self-Esteem Scale scores increased. Regarding the results of the 10-year follow up, the completer group had more patients with a good prognosis. In contrast, the dropout group had more patients with a poor prognosis. CONCLUSIONS: Those who completed the integrated group CBT had a good prognosis. Group therapy gives the patients an opportunity to form peer relationships, and helps them to develop communication and socialization skills. Furthermore, in the group therapy sessions, the patients develop self-awareness by listening to other members of the group and they also develop interpersonal relationships. This effect may be temporary, but experience of group therapy may provide hope for the patient and increase the chance of the patient continuing treatment. TRIAL REGISTRATION: Retrospectively registered in University Hospital Medical Information Network in Japan: No. 000028868 (May 19th, 2017).

11.
Neuropsychiatr Dis Treat ; 13: 25-33, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28053534

RESUMO

PURPOSE: Despite its clinical importance, adolescent subthreshold depression remains a largely neglected topic. The aims of this study were to accurately identify the natural course of depressive symptoms and the risk for developing major depressive episode (MDE) in late adolescents with subthreshold depression over 1 year. PATIENTS AND METHODS: One hundred and seventy-two participants <20 years of age (mean age: 18.32 years, standard deviation: 0.50), who did not meet the full criteria for an MDE, were selected from 2,494 screened freshmen based on the Beck Depression Inventory, 2nd edition (BDI-II). We conducted a cohort study of three groups (low-, middle-, and high-symptom groups) divided based on BDI-II scores, over a 1 year period with the use of bimonthly assessments. Temporal changes of depressive symptoms were analyzed using linear mixed modeling and growth mixture modeling. RESULTS: First, we found that late adolescents with subthreshold depression (high depressive symptoms) were split between the increasing and decreasing depressive symptoms groups, whereas the majority of the less-symptoms group remained stable during 1 year. Second, in comparison with late adolescents with less depressive symptoms, those with subthreshold depression had an elevated risk of later depression. CONCLUSION: Some late adolescents with subthreshold depression had increased depressive symptoms and developed an MDE during 1 year. Therefore, it is necessary for us to rigorously assess the changes in subthreshold depressive symptoms over time in late adolescents.

12.
J Affect Disord ; 204: 70-3, 2016 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-27341422

RESUMO

BACKGROUND: It is suggested that there is some support for notion that frequency of activity can lead to improved mood in behavioral activation, but this research is relatively imprecise. We investigated whether positive reinforcement mediates the relationship between activation and alleviation of depressive symptoms METHODS: Late adolescents with sub-threshold depressive symptoms participated in the study. We conducted an intervention using behavioral activation with the participants. Then, pre-and post-treatment results of behavioral activation were compared. We used mediation analysis using the bootstrapping method to examine whether changes in reinforcement mediated the relationship between changes in activation and improvements in depressive symptoms. RESULTS: Participants improved significantly at the post-intervention assessment, compared to the baseline assessment. Results of mediation analysis indicated that reinforcement significantly mediated the relationship between activation and depressive symptoms, whereas activation alone had no a direct effect on depressive symptoms. LIMITATIONS: Further studies with more diverse samples of participants are required in order to generalize the results of this study to more diverse populations. CONCLUSIONS: The study provides the first full mediational test of behavioral activation model including both measures of activation and positive reinforcement, and we found support for behavioral activation's presumed mechanism of action that contact with positive reinforcement mediates the relation between activity and depression.


Assuntos
Comportamento do Adolescente/psicologia , Terapia Comportamental/métodos , Depressão/psicologia , Depressão/terapia , Reforço Psicológico , Adolescente , Depressão/diagnóstico , Feminino , Humanos , Masculino , Modelos Psicológicos , Escalas de Graduação Psiquiátrica , Resultado do Tratamento , Adulto Jovem
13.
Eur Child Adolesc Psychiatry ; 25(11): 1171-1182, 2016 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-27003390

RESUMO

The main behavioral characteristic of subthreshold depression that is observed in adolescents is the low frequency of exposure to environmental rewards. Therefore, it was considered that a simple intervention conducted in short sessions, focusing on increasing access to positively reinforcing activities, would be efficacious in increasing the availability of rewards. We conduct a randomized controlled trial to examine the efficacy of such a behavioral activation program that was conducted weekly for 5 weeks in 60-min sessions. Late adolescent university students aged 18-19 years with subthreshold depression were randomly allocated to a treatment (n = 62) or a control group (n = 56). The primary outcome of the study was the Beck Depression Inventory-II score. Results indicated that late adolescent students in the treatment group showed significant improvements in their depressive symptoms (effect size -0.90, 95 % CI -1.28 to -0.51) compared to the control group. Students in the treatment group also showed significant improvements in self-reported rating of quality of life and in behavioral characteristics. It is concluded that this intervention had a large and significant effect despite being short and simple and that this low-intensity cognitive behavioral therapy program could be conducted in many different types of institutions. It is suggested that the long-term effects of the treatment program should be targeted for investigation in future studies.


Assuntos
Terapia Comportamental/métodos , Depressão/terapia , Recompensa , Adolescente , Adulto , Feminino , Humanos , Masculino , Qualidade de Vida , Resultado do Tratamento , Adulto Jovem
14.
Brain Nerve ; 67(2): 183-92, 2015 Feb.
Artigo em Japonês | MEDLINE | ID: mdl-25681363

RESUMO

Eating disorders are characterized by aberrant patterns of eating behavior, including such symptoms as extreme restriction of food intake or binge eating, and severe disturbances in the perception of body shape and weight, as well as a drive for thinness and obsessive fears of becoming fat. Eating disorder is an important cause for physical and psychosocial morbidity in young women. Patients with eating disorders have a deficit in the cognitive process and functional abnormalities in the brain system. Recently, brain-imaging techniques have been used to identify specific brain areas that function abnormally in patients with eating disorders. We have discussed the clinical and cognitive aspects of eating disorders and summarized neuroimaging studies of eating disorders.


Assuntos
Bulimia/etiologia , Cognição/fisiologia , Comportamento Alimentar/fisiologia , Transtornos da Alimentação e da Ingestão de Alimentos/diagnóstico , Transtornos da Alimentação e da Ingestão de Alimentos/terapia , Imagem Corporal , Bulimia/diagnóstico , Bulimia/terapia , Transtornos da Alimentação e da Ingestão de Alimentos/etiologia , Transtornos da Alimentação e da Ingestão de Alimentos/fisiopatologia , Humanos , Transtornos Mentais/complicações
15.
J Affect Disord ; 168: 472-5, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25128753

RESUMO

BACKGROUND: This study examines differences in behavioral characteristics among individuals who are not depressed and individuals with subthreshold depression, and depression. METHODS: We conducted structured interviews with 111 undergraduate students, who also completed self-report scales. The participants were divided into a non-depression group, a subthreshold depression group, and a depression group based on results of the structured interview and the BDI-II. RESULTS: There were significant differences in avoidance between depression group and other two groups. Also, for the environmental rewards, there were significant difference between the non-depressed group and the other two groups. LIMITATIONS: The sample of depressed participants was small. The overall sample consisted only undergraduate students. CONCLUSIONS: This study reported that there are different behavioral characteristics among non-depression, subthreshold depression, and depression groups. Whereas depression group is characterized by high frequency of avoidance and low environmental rewards, subthreshold depression group is characterized by only low environmental rewards.


Assuntos
Depressão/psicologia , Transtorno Depressivo/psicologia , Adolescente , Depressão/diagnóstico , Transtorno Depressivo/diagnóstico , Feminino , Humanos , Masculino , Autorrelato , Índice de Gravidade de Doença , Adulto Jovem
16.
Psychiatry Res ; 201(2): 113-9, 2012 Feb 28.
Artigo em Inglês | MEDLINE | ID: mdl-22398299

RESUMO

Several studies have reported that anorexia nervosa (AN) patients have high levels of alexithymia. However, relatively little is known about the underlying neurobiological relationships between alexithymia and AN. We used functional magnetic resonance imaging to examine the brain responses in 30 AN patients and 20 healthy women during the processing of negative words concerning interpersonal relationships. We investigated the relationship between alexithymia levels and brain activation in AN. AN patients showed significant activation of the orbitofrontal cortex, dorsolateral prefrontal cortex and medial prefrontal cortex while processing negative words concerning interpersonal relationships, as compared to the processing of neutral words. Moreover, the subjective rating of unpleasantness with negative words and neural activities in the amygdala, posterior cingulate cortex (PCC) and anterior cingulate cortex (ACC) negatively correlated with the level of alexithymia in AN. Our neuroimaging results suggest that AN patients tend to cognitively process negative words concerning interpersonal relationships, resulting in activation of the prefrontal cortex. Lower activation of the amygdala, PCC and ACC in response to these words may contribute to the impairments of emotional processing that are hallmarks of alexithymia. Functional abnormalities associated with alexithymia may be involved in the emotional processing impairments in AN patients.


Assuntos
Sintomas Afetivos/fisiopatologia , Anorexia Nervosa/fisiopatologia , Nível de Alerta/fisiologia , Encéfalo/fisiopatologia , Interpretação de Imagem Assistida por Computador , Relações Interpessoais , Imageamento por Ressonância Magnética , Oxigênio/sangue , Leitura , Semântica , Adulto , Sintomas Afetivos/diagnóstico , Sintomas Afetivos/psicologia , Anorexia Nervosa/diagnóstico , Anorexia Nervosa/psicologia , Mapeamento Encefálico , Dominância Cerebral/fisiologia , Imagem Ecoplanar , Feminino , Lobo Frontal/fisiopatologia , Giro do Cíngulo/fisiopatologia , Humanos , Valores de Referência , Lobo Temporal/fisiopatologia
17.
Seishin Shinkeigaku Zasshi ; 112(8): 741-9, 2010.
Artigo em Japonês | MEDLINE | ID: mdl-20976966

RESUMO

We examined brain activation in the presence of eating disorders while processing unpleasant words concerning body images using functional magnetic resonance imaging (fMRI). Anorexia nervosa restricting type (AN-R) and anorexia nervosa binge-eating/ purging type (AN-BP) patients showed significant amygdala activation. Farther, AN-BP and bulimia nervosa (BN) patients showed significant medial prefrontal cortex activation. Next, we conducted short-term integrated group therapy for eating disorders. After treatment, depressive scores of POMS and emotional-oriented coping scores of CISS were significantly decreased, and EAT scores and self-esteem scores of RSES were significantly increased.


Assuntos
Anorexia Nervosa/fisiopatologia , Anorexia Nervosa/terapia , Cognição/fisiologia , Tonsila do Cerebelo/fisiopatologia , Terapia Comportamental , Imagem Corporal , Feminino , Humanos , Imageamento por Ressonância Magnética , Psicoterapia de Grupo
18.
Psychiatry Res ; 181(3): 183-92, 2010 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-20153150

RESUMO

Eating disorder (ED) patients have severe disturbances in the perception of body shape and weight. The authors investigated brain activation patterns during the perception of distorted body images in various subtypes of ED. Participants comprised 33 patients with EDs (11 with restricting-type anorexia nervosa (AN-R), 11 with binging-purging type anorexia nervosa (AN-BP), 11 with bulimia nervosa (BN)) and 11 healthy women. Functional magnetic resonance imaging was used to examine cerebral response to morphed images of subjects' own bodies, as well as that of another woman. The amygdala was significantly activated in AN-R patients, AN-BP patients, and healthy women in response to their own fat-image, but this did not occur in BN patients. The prefrontal cortex (PFC) was significantly activated in AN-BP patients and healthy women, but not in AN-R and BN patients. Our results showed that the various EDs are different with respect to significant activation of the amygdala and PFC during the processing of participants' own fat-image. Brain activation pattern differences between the various EDs may underlie cognitive differences with respect to distorted body image, and therefore might reflect a general failure to represent and evaluate one's own body in a realistic fashion.


Assuntos
Imagem Corporal , Mapeamento Encefálico , Encéfalo/irrigação sanguínea , Transtornos da Alimentação e da Ingestão de Alimentos/complicações , Transtornos da Percepção/patologia , Autoimagem , Adolescente , Adulto , Tonsila do Cerebelo/irrigação sanguínea , Encéfalo/patologia , Transtornos da Alimentação e da Ingestão de Alimentos/classificação , Feminino , Humanos , Processamento de Imagem Assistida por Computador/métodos , Imageamento por Ressonância Magnética/métodos , Oxigênio/sangue , Reconhecimento Visual de Modelos/fisiologia , Estimulação Luminosa/métodos , Adulto Jovem
19.
Neuroimage ; 50(3): 1333-9, 2010 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-20045473

RESUMO

Eating disorders (EDs) are associated with abnormalities of body image perception. The aim of the present study was to investigate the functional abnormalities in brain systems during processing of negative words concerning body images in patients with EDs. Brain responses to negative words concerning body images (task condition) and neutral words (control condition) were measured using functional magnetic resonance imaging in 36 patients with EDs (12 with the restricting type anorexia nervosa; AN-R, 12 with the binging-purging type anorexia nervosa; AN-BP, and 12 with bulimia nervosa; BN) and 12 healthy young women. Participants were instructed to select the most negative word from each negative body-image word set and to select the most neutral word from each neutral word set. In the task relative to the control condition, the right amygdala was activated both in patients with AN-R and in patients with AN-BP. The left medial prefrontal cortex (mPFC) was activated both in patients with BN and in patients with AN-BP. It is suggested that these brain activations may be associated with abnormalities of body image perception. Amygdala activation may be involved in fearful emotional processing of negative words concerning body image and strong fears of gaining weight. One possible interpretation of the finding of mPFC activation is that it may reflect an attempt to regulate the emotion invoked by the stimuli. These abnormal brain functions may help provide better accounts of the psychopathological mechanisms underlying EDs.


Assuntos
Anorexia Nervosa/fisiopatologia , Imagem Corporal , Encéfalo/fisiopatologia , Bulimia Nervosa/fisiopatologia , Transtornos da Alimentação e da Ingestão de Alimentos/fisiopatologia , Leitura , Adulto , Mapeamento Encefálico , Feminino , Humanos , Imageamento por Ressonância Magnética , Processos Mentais/fisiologia , Testes Neuropsicológicos , Estimulação Luminosa , Psicolinguística , Percepção Visual/fisiologia
20.
Hiroshima J Med Sci ; 58(1): 1-8, 2009 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-19400551

RESUMO

Individuals with alexithymia are typically unable to identify, understand, or describe their own emotions. Patients with anorexia nervosa (AN) have been shown to have high levels of alexithymia, and the latter trait may play an important role over the course of AN. However, relatively little is known about the underlying neurobiological relationships between alexithymia and AN. The aim of this study was to investigate the relationship between alexithymia level and brain activation in patients with AN. Thirty female patients participated in this study. Alexithymia was measured using the 20-item Toronto Alexithymia Scale. Functional magnetic resonance imaging was used to identify the brain regions that display abnormal hemodynamic activity while patients with AN were engaged in an emotional decision-making task. There was significant activation in the amygdala during the task, but not in the posterior and anterior cingulate cortices (PCC, ACC). However, PCC and ACC activation did vary as a function of alexithymia level. These results suggest that alexithymia in AN patients is associated with a deficit in the cognitive evaluation of negative emotions concerning body image. Alexithymia might play a crucial role in the emotional processing impairments that are often observed in AN patients, and this trait might ultimately help to better account for the psychopathological mechanism that underlies AN.


Assuntos
Sintomas Afetivos/fisiopatologia , Anorexia Nervosa/fisiopatologia , Estimulação Acústica , Adulto , Sintomas Afetivos/psicologia , Anorexia Nervosa/psicologia , Imagem Corporal , Encéfalo/patologia , Mapeamento Encefálico/métodos , Emoções , Feminino , Humanos , Idioma , Imageamento por Ressonância Magnética/métodos , Modelos Neurológicos , Fenômenos Fisiológicos
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