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1.
Arch Womens Ment Health ; 26(6): 819-829, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37555873

RESUMO

The COVID-19 pandemic heightened prenatal maternal stress, a risk factor for poorer maternal and infant health. There was substantial variability, however, in the extent to which the stress of pandemic pregnancy influenced maternal mental health. Some of this variability may have been due to the different coping strategies used to manage pandemic stress. In this cross-sectional study of 7,383 pregnant women in the U.S. (M = 25.69 ± 8.71 weeks gestational age) recruited during the first and second U.S. waves of the COVID-19 pandemic, we examined associations of objective stressors, the subjective experience of stress, and the use of four coping strategies with anxiety and depressive symptoms. Spiritual coping, planning/preparation, and avoidant coping were associated with increased subjective and objective stress and with greater mood and anxiety symptoms, whereas coping by positive appraisal was associated with modestly lower subjective stress and with lower mood and anxiety symptoms. We also found small interactions of stress and coping in predicting mood and anxiety symptoms, suggesting that fit between coping strategy and type of stress influences coping outcomes. Specific coping strategy used as well as the fit between coping strategy and stress type may determine whether coping buffers or exacerbates mood and anxiety symptoms. The small magnitude of these associations suggests that individual-level coping may be insufficient in the face of the overwhelming nature of the stress accompanying a global pandemic. This work adds to our understanding of coping with pregnancy stress in the context of population-level stressors (i.e., a pandemic or large-scale disaster).


Assuntos
COVID-19 , Saúde Mental , Gravidez , Feminino , Humanos , Pandemias , Estudos Transversais , Adaptação Psicológica , Ansiedade/epidemiologia , Estresse Psicológico/epidemiologia , Depressão/epidemiologia
2.
Arch Womens Ment Health ; 25(2): 367-376, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-34269873

RESUMO

The COVID-19 pandemic has led to a public mental health crisis with many people experiencing new or worsening anxiety. Fear of contagion and the lack of predictability/control in daily life increased the risk for problems such as obsessive-compulsive disorder (OCD) in the general population. Pregnant women may be particularly vulnerable to such pandemic-related stressors yet the prevalence of OC symptoms in this population during the pandemic remains unknown. We examined the prevalence of OC symptoms in a sample of 4451 pregnant women in the USA, recruited via targeted online methods at the start of the pandemic. Participants completed self-report measures including the Obsessive-Compulsive Inventory-Revised and the Pandemic-Related Pregnancy Stress Scale. Clinically significant OC symptoms were present in 7.12% of participants, more than twice as high as rates of peripartum OCD reported prior to the pandemic. Younger maternal age, income loss, and suspected SARS-CoV-2 infection were all associated with higher OC symptoms. Two types of pregnancy-specific stress, pandemic-related and pandemic-unrelated, were both associated with higher levels of OC symptoms. Pandemic-related pregnancy stress predicted OC symptoms even after controlling for non-pandemic-related, pregnancy-specific stress. Elevated rates of OC symptoms were observed in women pregnant during the pandemic, particularly those experiencing elevated pandemic-related pregnancy stress. This type of stress confers a distinct risk for OC symptoms above and beyond pregnancy-specific stress and demographic factors. Healthcare providers should be prepared to see and treat more peripartum women with OC symptoms during this and future public health crises.


Assuntos
COVID-19 , Transtorno Obsessivo-Compulsivo , Ansiedade/epidemiologia , Ansiedade/psicologia , COVID-19/epidemiologia , Feminino , Humanos , Transtorno Obsessivo-Compulsivo/diagnóstico , Transtorno Obsessivo-Compulsivo/epidemiologia , Transtorno Obsessivo-Compulsivo/psicologia , Pandemias , Gravidez , Gestantes , SARS-CoV-2
3.
J Clin Child Adolesc Psychol ; 50(1): 131-140, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-31328972

RESUMO

Blunted reward processing both characterizes major depressive disorder and predicts increases in depressive symptoms. However, little is known about the interaction between blunted reward processing and other risk factors in relation to increases in depressive symptoms. Stressful life events and sleep problems are prominent risk factors that contribute to the etiopathogenesis of depression and have been linked to reward dysfunction; these factors may interact with reward dysfunction to predict increased depressive symptoms. In a large sample of 8- to 14-year-old adolescent girls, the current study examined how blunted reward processing, stressful life events, and sleep problems at baseline interacted to predict increases in depressive symptoms 1 year later. Reward processing was indexed by the reward positivity (RewP), an event-related potential elicited during a simple monetary reward paradigm (i.e., Doors task). Two-way interactions confirmed that a blunted RewP predicted increased depressive symptoms at (a) high levels of stress but not average or low levels of stress, and (b) high and average levels of sleep problems but not low levels of sleep problems. Finally, a 3-way interaction confirmed that a blunted RewP predicted increased depressive symptoms at high levels of stress and sleep problems but not average or low levels of stress and sleep problems. Thus, adolescents characterized by low reward response (i.e., blunted RewP) were at an increased risk of developing depressive symptoms if they experienced increased stressful life events or sleep problems; moreover, risk was greatest among adolescents characterized by all 3.


Assuntos
Depressão , Recompensa , Sono , Adolescente , Criança , Potenciais Evocados , Feminino , Humanos
4.
Dev Psychobiol ; 63(6): e22175, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34333771

RESUMO

Event-related potential (ERP) measures of reward- and error-related brain activity have emerged as potential biomarkers of risk for the development of psychopathology. However, the psychometric properties of reward- and error-related brain activity have been primarily investigated in adolescents and adults. It is critical to also establish the reliability of ERPs in younger children, particularly if they are used as individual difference measures of risk during key developmental periods. The present study examined the reliability of the reward positivity (RewP) and error-related negativity (ERN) among 80 children (Mage  = 6.9 years old; 50% female). Participants completed the doors, flanker, and go/no-go tasks twice, separated by approximately 8 months, while electroencephalography (EEG) was recorded. Results indicated that the RewP demonstrated strong internal consistency and test-retest reliability. The ERN also demonstrated strong internal consistency, but test-retest reliability was only significant for the ERN measured during the flanker task and not the go/no-go task. These results are largely consistent with reported psychometric properties of reward- and error related ERPs in adolescents and adults, suggesting that the ERN and RewP may be appropriate biomarkers of individual differences in populations ranging from early childhood to adulthood.


Assuntos
Eletroencefalografia , Potenciais Evocados , Adolescente , Adulto , Encéfalo , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Reprodutibilidade dos Testes , Recompensa , Adulto Jovem
5.
Health Promot Pract ; 22(1_suppl): 70S-82S, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33942642

RESUMO

Objectives. To increase the scale and efficacy of health promotion practice, culturally responsive approaches to well-being are needed in both communication and practice innovation. This mixed-methods evaluation sought to identify specific mechanisms used in a promising practice model and offers a potential theoretical framework to support public health programs in integrating culture and social justice into communication and intervention programs. Study Design. Rooted at the intersection of ethnographic and phenomenological worldviews, this mixed-methods, retrospective process evaluation used publicly available empirical and experiential data centered on the arts, science, and social justice to identify critical mechanisms used and incorporate them into an emergent theoretical framework. Method. The retrospective process evaluation used an ethnography-informed approach combined with scientific literature reviews. To integrate adjacent ideas into the emergent theoretical framework, a phenomenologically informed theme development approach was used. Results. The evaluation resulted in a five-step framework, called MOTIF, with the potential to be utilized in diverse situational and geographic contexts. Data that surfaced from related literature reviews revealed adjacent mechanisms from positive psychology, critical consciousness theory, and innovation design that were incorporated into the emergent framework. Conclusion. MOTIF may offer a culturally responsive public health communication and innovation process capable of promoting health equity through the cultivation of relationships between artists, community participants, and public health agencies and researchers who collectively endeavor to craft innovative solutions for population health and well-being.


Assuntos
Arte , Comunicação em Saúde , Humanos , Saúde Pública , Estudos Retrospectivos , Justiça Social
6.
J Clin Child Adolesc Psychol ; 48(4): 643-655, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-29412004

RESUMO

Adolescent girls are at increased risk for depression, which is thought to result from the interaction of biological vulnerabilities and life stressors common to adolescent girls. A blunted late positive potential (LPP) to emotional stimuli (i.e., pleasant and unpleasant) has been associated with depressive symptoms and risk. The current study of adolescent girls examines the moderating effects of the LPP, a candidate biomarker of depression, of the link between life stress and increases in depressive symptoms over 1 year. We measured LPP to pleasant and unpleasant pictures from the International Affective Picture Set among 143 predominantly Caucasian adolescent girls ages 8 to 14, who also reported on the frequency of common life stressors. Self-reported depressive symptoms were assessed both at baseline and 1 year after the initial lab visit. The LPP to pleasant pictures moderated the relationship between baseline life stressors and the change in depressive symptoms. Specifically, life stress was associated with increases in depressive symptoms when the LPP to pleasant pictures was blunted, whereas life stress was associated with decreases in depressive symptoms when the LPP to pleasant pictures was potentiated. These effects showed some specificity to family and school-related stressors and to anhedonic and efficacy-related depressive symptoms. A similar pattern, though not statistically significant, was found for the LPP to unpleasant pictures. Together, these findings suggest that the LPP to pleasant pictures may represent a useful biomarker in identifying individuals at greatest risk of experiencing depressive symptoms following stress.


Assuntos
Depressão/psicologia , Emoções/fisiologia , Fotografação , Estresse Psicológico/psicologia , Adolescente , Criança , Transtorno Depressivo , Feminino , Humanos , Masculino , Estudos Prospectivos
8.
J Nerv Ment Dis ; 201(9): 795-801, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23995036

RESUMO

This study presents nationally representative data on the prevalence and the correlates of difficulty discarding, a behavior described in many psychiatric disorders, including a new diagnosis in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, called hoarding disorder. Data were derived from the National Epidemiologic Survey on Alcohol and Related Conditions, a national sample of the US population (N=43,093). Difficulty discarding worn-out/worthless items (assessed by a single item) and diagnoses of psychiatric disorders were based on the Alcohol Use Disorder and Associated Disabilities Interview Schedule. The prevalence of difficulty discarding worn-out/worthless items in the general population was 20.6%. Difficulty discarding strongly correlated with axis I and axis II disorders, level of impairment, and use of mental health services. Difficulty discarding worn-out/worthless items is a common behavior that can be associated with various forms of psychopathology. When reported in a clinical setting, it may signal that careful assessment is needed to clarify diagnosis and inform treatment strategies.


Assuntos
Transtorno de Acumulação/epidemiologia , Adolescente , Adulto , Idoso , Comorbidade , Estudos Transversais , Feminino , Inquéritos Epidemiológicos , Transtorno de Acumulação/diagnóstico , Transtorno de Acumulação/psicologia , Humanos , Entrevista Psicológica , Masculino , Transtornos Mentais/diagnóstico , Transtornos Mentais/epidemiologia , Transtornos Mentais/psicologia , Pessoa de Meia-Idade , Estatística como Assunto , Estados Unidos , Adulto Jovem
9.
J Psychosom Obstet Gynaecol ; 43(4): 426-432, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-34967691

RESUMO

PURPOSE: Postpartum experiences have been adversely affected by the burdens of the COVID-19 pandemic. However, there are no well-tested measures of pandemic-specific postpartum stress. We developed a modified, postpartum version of the Pandemic-Related Pregnancy Stress Scale (PREPS) and examined the psychometric properties of this novel measure. METHODS: Online questionnaires were administered at 3-4 month intervals throughout pregnancy and postpartum to women pregnant at the start of the pandemic. This study reports psychometric properties of the Pandemic-Related Postpartum Stress Scale (PREPS-PP) among women who were administered this instrument at either of two postpartum timepoints. RESULTS: At both timepoints (n = 1301 and n = 1009), CFAs revealed good model fit of the same three-factor structure identified for the prenatal PREPS (Preparedness Stress, Infection Stress, and Positive Appraisal). All PREPS-PP subscales demonstrated good reliability (α's .78-87). Higher levels of Preparedness Stress and Infection Stress were associated with greater health and financial burdens and psychological distress. CONCLUSIONS: The PREPS-PP is a reliable and valid measure of postpartum stress related to the COVID-19 pandemic. It is a valuable tool for future research into how pandemic-related postpartum stress may affect families in the short- and long-term.


Assuntos
COVID-19 , Pandemias , Gravidez , Feminino , Humanos , Psicometria , Reprodutibilidade dos Testes , Período Pós-Parto
10.
Biol Psychol ; 167: 108240, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34875364

RESUMO

Parenting styles play a critical role in child well-being, yet the neural bases of parenting behaviors remain nebulous. Understanding the neural processes associated with parenting styles can both clarify etiological mechanisms underlying parenting behaviors and point us toward new targets for intervention. A novel electrocortical biomarker called the observational reward positivity (oRewP) that occurs in response to observing another receive a reward has been linked to self-reported authoritarian parenting behavior. The current study sought to replicate associations between the oRewP and self-reported and observationally-coded parenting in a sample of mothers selected to be at elevated risk for problematic parenting. Self-reported authoritarian parenting was associated with observationally-coded problematic discipline, while no other self-reported parenting scales were associated with observationally-coded scores. We replicated the previously reported association between a blunted oRewP and increased self-reported authoritarian parenting. We additionally found that an attenuated oRewP was associated with greater permissive parenting, and that only the relationship with permissive parenting was conserved after adjusting for other parenting styles and other relevant covariates. We did not find significant associations between the oRewP and observationally-coded parenting. The current findings suggest that the neural process indexed by the oRewP are relevant to parenting behavior. Further research is needed to better understand the discrepancy between self-reported and observed parenting.


Assuntos
Mães , Poder Familiar , Biomarcadores , Criança , Feminino , Humanos , Relações Pais-Filho , Recompensa , Autorrelato
11.
Neuropsychologia ; 145: 106346, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-28457978

RESUMO

Mounting evidence suggests that the ability to regulate emotion is crucial for psychological well-being. However, one important limitation of prior emotion regulation studies is that they rely on standardized stimuli low in personal relevance. To address this limitation, the current study employed a novel event-related potential (ERP) paradigm designed to investigate the late positive potential (LPP) as a measure of emotional reactivity and regulation to idiographic stimuli in 49 young adults. The Autobiographical Emotion Regulation Task (AERT) is a word-viewing task in which participants identify neutral and emotionally-charged autobiographical memories and generate keywords unique to each memory. First, participants are instructed to simply view the keywords. Then, participants are presented with keywords from negative memories and are either instructed to react normally (react condition), or to use cognitive reappraisal to decrease negative emotion (reappraise condition). Results indicate that the LPP was potentiated when initially viewing keywords for negative compared to neutral memories. Furthermore, the LPP was reduced during reappraise compared to react trials, demonstrating successful down-regulation of neural activity to negative idiographic stimuli. These findings suggest that the AERT is a feasible and effective probe of emotion regulation to idiographic stimuli.


Assuntos
Regulação Emocional , Memória Episódica , Eletroencefalografia , Potenciais Evocados , Feminino , Humanos , Masculino , Adulto Jovem
12.
Psychiatr Serv ; 71(4): 405-408, 2020 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-31910750

RESUMO

Hoarding disorder has significant health consequences, including the devastating threat of eviction. In this pilot study, critical time intervention (CTI), an evidence-based model of case management shown to be effective for vulnerable populations, was adapted for individuals with severe symptoms of hoarding disorder at risk for eviction (CTI-HD). Of the 14 adults who enrolled, 11 participants completed the 9-month intervention. Completers reported a modest decrease in hoarding severity, suggesting that, while helpful, CTI-HD alone is unlikely to eliminate the risk of eviction for individuals with severe symptoms of hoarding disorder.


Assuntos
Administração de Caso , Transtorno de Acumulação/terapia , Habitação , Reabilitação Psiquiátrica/métodos , Idoso , Comorbidade , Feminino , Transtorno de Acumulação/epidemiologia , Pessoas Mal Alojadas , Humanos , Masculino , Pessoa de Meia-Idade , Avaliação de Resultados em Cuidados de Saúde , Projetos Piloto , Fatores de Tempo
13.
Soc Cogn Affect Neurosci ; 13(3): 247-255, 2018 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-29373743

RESUMO

Affective science research on reward processing has primarily focused on monetary rewards. There has been a growing interest in evaluating the neural basis of social decision-making and reward processing. The present study employed a within-subject design and compared the reward positivity (RewP), an event-related potential component that is present following favorable feedback and absent or reduced following unfavorable feedback, during monetary and social reward tasks. Specifically, 114 participants (75 females) completed a monetary reward task and a novel social reward task that were matched on trial structure, timing, and feedback stimuli in a counterbalanced order. Results indicated that the monetary and social RewP were of similar magnitude, positively correlated and demonstrated comparable psychometric properties, including reliability and dependability. Across both the monetary and social tasks, women demonstrated a greater RewP compared with men. This study provides a novel methodological approach toward examining the electrocortical response to social reward that is comparable to monetary reward.


Assuntos
Eletroencefalografia , Motivação/fisiologia , Recompensa , Meio Social , Ansiedade/psicologia , Tomada de Decisões/fisiologia , Depressão/psicologia , Potenciais Evocados/fisiologia , Retroalimentação Psicológica , Feminino , Humanos , Masculino , Escalas de Graduação Psiquiátrica , Psicometria , Reprodutibilidade dos Testes , Caracteres Sexuais , Adulto Jovem
14.
Biol Psychol ; 136: 111-118, 2018 07.
Artigo em Inglês | MEDLINE | ID: mdl-29807086

RESUMO

Affective personality traits, such as extraversion and neuroticism, are associated with individual differences in reward system functioning. The reward positivity (ΔRewP) is an event-related potential (ERP) component that indexes sensitivity to reward, and can be elicited by feedback indicating monetary gains relative to losses. In a sample of 508 adolescent girls, the current study examined the relationship between extraversion, neuroticism, and their respective facets and the ΔRewP. Results indicated an Extraversion × Neuroticism interaction, such that greater extraversion was associated with an increased ΔRewP, but only in the context of low neuroticism. This association was primarily due to the extraversion facet positive emotionality-high levels of positive emotionality were associated with an increased ΔRewP, but only in the context of low neuroticism. In addition, increased neuroticism diminished the age-related increase in the ΔRewP. The current study suggests that both extraversion and neuroticism are associated with reward system function in adolescence.


Assuntos
Potenciais Evocados/fisiologia , Extroversão Psicológica , Neuroticismo , Recompensa , Adolescente , Feminino , Humanos , Individualidade
15.
Psychophysiology ; 54(4): 601-607, 2017 04.
Artigo em Inglês | MEDLINE | ID: mdl-28072462

RESUMO

The ability to differentiate between rewards and losses is critical for motivated action, and aberrant reward and loss processing has been associated with psychopathology. The reward positivity (RewP) and feedback negativity (FN) are ERPs elicited by monetary gains and losses, respectively, and are promising individual difference measures. However, few studies have reported on the psychometric properties of the RewP and FN-crucial characteristics necessary for valid individual difference measures. The current study examined the internal consistency and 1-week test-retest reliability of the RewP and FN as elicited by the doors task among 59 young adults. The RewP, FN, and their difference score (ΔRewP) all showed significant correlations between Time 1 and Time 2. The RewP and FN also achieved acceptable internal consistency at both time points within 20 trials using both Cronbach's α and a generalizability theory-derived dependability measure. Internal consistency for ΔRewP was notably weaker at both time points, which is expected from two highly intercorrelated constituent scores. In conclusion, the RewP and FN have strong psychometric properties in a healthy adult sample. Future research is needed to assess the psychometric properties of these ERPs in different age cohorts and in clinical populations.


Assuntos
Córtex Cerebral/fisiologia , Potenciais Evocados , Individualidade , Recompensa , Adulto , Eletroencefalografia , Feminino , Jogos Experimentais , Humanos , Masculino , Psicometria , Reprodutibilidade dos Testes , Adulto Jovem
16.
Soc Cogn Affect Neurosci ; 12(3): 363-371, 2017 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-27613780

RESUMO

Parenting styles are robust predictors of offspring outcomes, yet little is known about their neural underpinnings. In this study, 44 parent-adolescent dyads (Mage of adolescent = 12.9) completed a laboratory guessing task while EEG was continuously recorded. In the task, each pair member received feedback about their own monetary wins and losses and also observed the monetary wins and losses of the other member of the pair. We examined the association between self-reported parenting style and parents' electrophysiological responses to watching their adolescent winning and losing money, dubbed the observational Reward Positivity (RewP) and observational feedback negativity (FN), respectively. Self-reported authoritarian parenting predicted reductions in parents' observational RewP but not FN. This predictive relationship remained after adjusting for sex of both participants, parents' responsiveness to their own wins, and parental psychopathology. 'Exploratory analyses found that permissive parenting was associated with a blunting of the adolescents' response to their parents' losses'. These findings suggest that parents' rapid neural responses to their child's successes may relate to the harsh parenting behaviors associated with authoritarian parenting.


Assuntos
Nível de Alerta/fisiologia , Autoritarismo , Córtex Cerebral/fisiologia , Eletroencefalografia , Poder Familiar/psicologia , Recompensa , Adolescente , Adulto , Criança , Potenciais Evocados/fisiologia , Retroalimentação , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Motivação/fisiologia , Relações Pais-Filho , Permissividade
17.
Artigo em Inglês | MEDLINE | ID: mdl-28163996

RESUMO

OBJECTIVE: To explore the acceptability of currently available treatments and services for individuals who self-report hoarding behaviors. METHOD: Between 10/2013 and 8/2014, participants were invited to complete an online survey that provided them descriptions of eleven treatments and services for hoarding behaviors and asked them to evaluate their acceptability using quantitative (0 [not at all acceptable] -10 [completely acceptable]) Likert scale ratings. The a priori definition of acceptability for a given resource was an average Likert scale score of six or greater. Two well-validated self-report measures assessed hoarding symptom severity: the Saving Inventory-Revised and the Clutter Image Rating Scale. RESULTS: Two hundred and seventy two participants who self-reported having hoarding behaviors completed the questionnaire. Analyses focused on the 73% of responders (n=203) who reported clinically significant hoarding behaviors (i.e., Saving Inventory-Revised scores of ≥40). The three most acceptable treatments were individual cognitive behavioral therapy (6.2 ±3.1 on the Likert scale), professional organizing service (6.1 ±3.2), and use of a self-help book (6.0 ±3.0). CONCLUSION: In this sample of individuals with self-reported clinically significant hoarding behaviors (n=203), only 3 out of 11 treatments and services for hoarding were deemed acceptable using an a priori score. While needing replication, these findings indicate the need to design more acceptable treatments and services to engage clients and maximize treatment outcomes for hoarding disorder.

18.
Psychiatry Res ; 233(2): 141-7, 2015 Aug 30.
Artigo em Inglês | MEDLINE | ID: mdl-26104826

RESUMO

We previously reported the rapid and robust clinical effects of ketamine versus saline infusions in a proof-of-concept crossover trial in unmedicated adults with obsessive-compulsive disorder (OCD). This study examined the concurrent neurochemical effects of ketamine versus saline infusions using proton magnetic resonance spectroscopy ((1)H MRS) during the clinical proof-of-concept crossover trial. Levels of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA) and the excitatory neurochemicals glutamate+glutamine (Glx) were acquired in the medial prefrontal cortex (MPFC), a region implicated in OCD pathology. Seventeen unmedicated OCD adults received two intravenous infusions at least 1 week apart, one of saline and one of ketamine, while lying supine in a 3.0 T GE MR scanner. The order of each infusion pair was randomized. Levels of GABA and Glx were measured in the MPFC before, during, and after each infusion and normalized to water (W). A mixed effects model found that MPFC GABA/W significantly increased over time in the ketamine compared with the saline infusion. In contrast, there were no significant differences in Glx/W between the ketamine and saline infusions. Together with earlier evidence of low cortical GABA in OCD, our findings suggest that models of OCD pathology should consider the role of GABAergic abnormalities in OCD symptomatology.


Assuntos
Antagonistas de Aminoácidos Excitatórios/farmacologia , Ácido Glutâmico/metabolismo , Glutamina/metabolismo , Ketamina/farmacologia , Transtorno Obsessivo-Compulsivo/tratamento farmacológico , Transtorno Obsessivo-Compulsivo/metabolismo , Córtex Pré-Frontal/metabolismo , Ácido gama-Aminobutírico/metabolismo , Adulto , Estudos Cross-Over , Antagonistas de Aminoácidos Excitatórios/administração & dosagem , Feminino , Ácido Glutâmico/efeitos dos fármacos , Glutamina/efeitos dos fármacos , Humanos , Ketamina/administração & dosagem , Masculino , Córtex Pré-Frontal/efeitos dos fármacos , Espectroscopia de Prótons por Ressonância Magnética , Resultado do Tratamento , Ácido gama-Aminobutírico/efeitos dos fármacos
19.
Emotion ; 13(5): 905-914, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-23731439

RESUMO

This study tested the hypothesis that enhanced neural arousal in response to performance errors would predict poor affect and coping behaviors in everyday life. Participants were preselected as either low-depressed (LD) or high-depressed (HD) based on a screening questionnaire, and they then completed a laboratory Stroop task while EEG was recorded, followed by a 2-week period of daily reports of affect and coping behaviors. The EEG measure of arousal response to errors was the degree of error-related alpha suppression (ERAS) in the intertrial interval, that is the reduction in alpha power following errors compared with correct responses. ERAS was relatively heightened at frontal sites for the HD versus the LD group, and frontal ERAS predicted lower positive affect, higher negative affect, and less adaptive coping behaviors in the daily reports. Together, the results imply that heightened arousal following mistakes is associated with suboptimal emotion and coping with stressors.


Assuntos
Adaptação Psicológica , Afeto , Depressão , Desempenho Psicomotor , Repressão Psicológica , Estresse Psicológico , Adolescente , Adulto , Depressão/psicologia , Transtorno Depressivo/psicologia , Emoções , Feminino , Humanos , Masculino , Estresse Psicológico/psicologia , Inquéritos e Questionários , Adulto Jovem
20.
Neuropsychopharmacology ; 38(12): 2475-83, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-23783065

RESUMO

Serotonin reuptake inhibitors (SRIs), the first-line pharmacological treatment for obsessive-compulsive disorder (OCD), have two limitations: incomplete symptom relief and 2-3 months lag time before clinically meaningful improvement. New medications with faster onset are needed. As converging evidence suggests a role for the glutamate system in the pathophysiology of OCD, we tested whether a single dose of ketamine, a non-competitive N-methyl-D-aspartate (NMDA) glutamate receptor antagonist, could achieve rapid anti-obsessional effects. In a randomized, double-blind, placebo-controlled, crossover design, drug-free OCD adults (n=15) with near-constant obsessions received two 40-min intravenous infusions, one of saline and one of ketamine (0.5 mg/kg), spaced at least 1-week apart. The OCD visual analog scale (OCD-VAS) and the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) were used to assess OCD symptoms. Unexpectedly, ketamine's effects within the crossover design showed significant (p<0.005) carryover effects (ie, lasting longer than 1 week). As a result, only the first-phase data were used in additional analyses. Specifically, those receiving ketamine (n=8) reported significant improvement in obsessions (measured by OCD-VAS) during the infusion compared with subjects receiving placebo (n=7). One-week post-infusion, 50% of those receiving ketamine (n=8) met criteria for treatment response (≥35% Y-BOCS reduction) vs 0% of those receiving placebo (n=7). Rapid anti-OCD effects from a single intravenous dose of ketamine can persist for at least 1 week in some OCD patients with constant intrusive thoughts. This is the first randomized, controlled trial to demonstrate that a drug affecting glutamate neurotransmission can reduce OCD symptoms without the presence of an SRI and is consistent with a glutamatergic hypothesis of OCD.


Assuntos
Antagonistas de Aminoácidos Excitatórios/uso terapêutico , Ketamina/uso terapêutico , Transtorno Obsessivo-Compulsivo/tratamento farmacológico , Adulto , Estudos Cross-Over , Método Duplo-Cego , Antagonistas de Aminoácidos Excitatórios/administração & dosagem , Feminino , Humanos , Ketamina/administração & dosagem , Masculino , Pessoa de Meia-Idade , Adulto Jovem
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