Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 20
Filtrar
1.
Clin Psychol Psychother ; 31(3): e2983, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38706144

RESUMO

Exposure to gender-related minority stressors, the negative experiences and beliefs that stem from anti-trans stigma increases transgender and gender diverse (TGD) people's vulnerability to experiencing poor mental health outcomes. This study examined if the relationships between experiences of minority stress and mental health outcomes were mediated by early maladaptive schemas: mental representations shaping the way people view themselves, others and the world. Drawing from a schema therapy perspective, the study additionally examined if caregivers' failure to meet TGD people's core emotional needs was associated with mental health outcomes and if schemas similarly mediated these relationships. A total of 619 TGD adults completed an online survey about early maladaptive schemas, core emotional needs, gender-related minority stress and psychological distress and wellbeing. Causal mediation analyses indicated that caregivers who did not meet TGD people's core emotional needs and greater experiences of minority stress were associated with increased distress and lower wellbeing. These relationships were mediated by schema severity, particularly the disconnection and rejection and impaired autonomy domains. These findings provide empirical support for the schema therapy model's assumption that unmet core emotional needs are associated with schema formation. For TGD people, maladaptive beliefs about the self, others and world can form in response to manifestations of anti-trans stigma within the individual, their interpersonal relationships, community and broader society. Caregivers' failure to meet needs, plus experiences of minority stress throughout the individual's system, leads to greater distress and lower wellbeing; however, clinical interventions targeting schemas may improve outcomes for this at-risk group.


Assuntos
Estigma Social , Estresse Psicológico , Pessoas Transgênero , Humanos , Feminino , Masculino , Adulto , Pessoas Transgênero/psicologia , Pessoas Transgênero/estatística & dados numéricos , Estresse Psicológico/psicologia , Pessoa de Meia-Idade , Adulto Jovem , Inquéritos e Questionários , Adolescente
2.
Dermatol Surg ; 48(11): 1166-1170, 2022 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-36095288

RESUMO

BACKGROUND: Ibrutinib, an irreversible Bruton tyrosine kinase inhibitor, has been associated with an increased risk of bleeding. There is a paucity of data on the risk of bleeding in patients on ibrutinib undergoing dermatologic surgery. OBJECTIVE: To determine the frequency of bleeding complications associated with ibrutinib in patients undergoing dermatologic surgery. MATERIALS AND METHODS: A retrospective, single-center, case-control study of patients on ibrutinib undergoing skin surgery between January 2013 and March 2020 compared with sex, disease, and age-matched control patients undergoing cutaneous surgeries. RESULTS: A total of 75 surgeries performed on 37 case patients and 116 surgeries performed on 64 control patients were included. Ibrutinib was associated with a statistically significant increased rate of bleeding events (6/75 [8%] vs 1/116 [0.8%], p -value = .02). Compared with ibrutinib patients who did not have a bleeding event, those on ibrutinib who suffered bleeding were all men, older (mean age 82.7 vs 73.0, p -value= .01), and had lower mean platelet counts (104.0 vs 150.5 K/µL, p -value = .03). CONCLUSION: Ibrutinib may be associated with increased risk of bleeding in patients with hematologic malignancies, particularly older men with lower platelet levels and on multiple anticoagulants. Transient discontinuation of ibrutinib should be considered for dermatologic surgeries.


Assuntos
Pirazóis , Pirimidinas , Masculino , Humanos , Idoso , Idoso de 80 Anos ou mais , Pirimidinas/efeitos adversos , Pirazóis/efeitos adversos , Estudos de Casos e Controles , Estudos Retrospectivos , Hemorragia/induzido quimicamente , Procedimentos Cirúrgicos Dermatológicos/efeitos adversos , Inibidores de Proteínas Quinases/efeitos adversos
3.
Genet Med ; 23(5): 934-941, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33500569

RESUMO

PURPOSE: Multiple efforts are underway to increase the inclusion of racial minority participants in genomic research and new forms of individualized medicine. These efforts should include studies that characterize how individuals from minority communities experience genomic medicine in diverse health-care settings and how they integrate genetic knowledge into their understandings of health-care needs. METHODS: As part of a large, multisite genomic sequencing study, we surveyed individuals to assess their decision to pursue genomic risk evaluation. Participants included Latino patients recruited at Mountain Park Health Center, a Federally Qualified Health Center in Phoenix, Arizona, and non-Latino patients recruited at a large academic medical center (Mayo Clinic in Rochester, MN). Both groups agreed to receive individualized genomic risk assessments. RESULTS: Comparisons between cohorts showed that Latino respondents had lower levels of decisional conflict about pursuing genomic screening but generally scored lower on genetic knowledge. Latino respondents were also more likely to have concerns about the misuse of genomic information, despite both groups having similar views about the value of genomic risk evaluation. CONCLUSION: Our results highlight the importance of evaluating sociocultural factors that influence minority patient engagement with genomic medicine in diverse health-care settings.


Assuntos
Hispânico ou Latino , Medicina de Precisão , Estudos de Coortes , Genômica , Hispânico ou Latino/genética , Humanos , Grupos Minoritários
4.
J Neurosci ; 37(37): 8895-8900, 2017 09 13.
Artigo em Inglês | MEDLINE | ID: mdl-28842409

RESUMO

Reward function appears to be modulated by the circadian system, but little is known about the neural basis of this interaction. Previous research suggests that the neural reward response may be different in the afternoon; however, the direction of this effect is contentious. Reward response may follow the diurnal rhythm in self-reported positive affect, peaking in the early afternoon. An alternative is that daily reward response represents a type of prediction error, with neural reward activation relatively high at times of day when rewards are unexpected (i.e., early and late in the day). The present study measured neural reward activation in the context of a validated reward task at 10.00 h, 14.00 h, and 19.00 h in healthy human males. A region of interest BOLD fMRI protocol was used to investigate the diurnal waveform of activation in reward-related brain regions. Multilevel modeling found, as expected, a highly significant quadratic time-of-day effect focusing on the left putamen (p < 0.001). Consistent with the "prediction error" hypothesis, activation was significantly higher at 10.00 h and 19.00 h compared with 14.00 h. It is provisionally concluded that the putamen may be particularly important in endogenous priming of reward motivation at different times of day, with the pattern of activation consistent with circadian-modulated reward expectancies in neural pathways (i.e., greater activation to reward stimuli at unexpected times of day). This study encourages further research into circadian modulation of reward and underscores the methodological importance of accounting for time of day in fMRI protocols.SIGNIFICANCE STATEMENT This is one of the first studies to use a repeated-measures imaging procedure to explore the diurnal rhythm of reward activation. Although self-reported reward (most often operationalized as positive affect) peaks in the afternoon, the present findings indicate that neural activation is lowest at this time. We conclude that the diurnal neural activation pattern may reflect a prediction error of the brain, where rewards at unexpected times (10.00 h and 19.00 h) elicit higher activation in reward brain regions than at expected (14.00 h) times. These data also have methodological significance, suggesting that there may be a time of day influence, which should be accounted for in neural reward studies.


Assuntos
Ondas Encefálicas/fisiologia , Encéfalo/fisiologia , Comportamento de Escolha/fisiologia , Ritmo Circadiano/fisiologia , Rede Nervosa/fisiologia , Recompensa , Mapeamento Encefálico , Humanos , Masculino , Valores de Referência , Fatores de Tempo
5.
Br J Gen Pract ; 2024 Feb 14.
Artigo em Inglês | MEDLINE | ID: mdl-38355220

RESUMO

BACKGROUND: Cognitive behavioural therapy for insomnia (CBT-I) is recommended as the first-line treatment yet remains underutilised in general practice. Understanding patient motivations and barriers to engaging in psychological interventions for insomnia is critical. Theoretical frameworks, such as the Theory of Planned Behaviour, are needed to identify variables related to intentions and behaviour change. AIM: To explore key influences that motivate individuals' intention to engage with psychological interventions for insomnia. DESIGN AND SETTING: An online survey and interviews with 20 community-dwelling participants with insomnia, aged 26-75 years. METHOD: Guided by the Theory of Planned Behaviour, reflexive thematic analysis was used to identify factors influencing participants' intention to engage with psychological interventions for insomnia. RESULTS: Participants reported positive attitudes towards psychological interventions for insomnia, stemming from negative beliefs about pharmacological sleep aids and the perceived benefits of a structured and evidence-based intervention. Important others positively influenced participants' intention to engage, however the GP influence was less consistent and often indirect. Participants believed in the efficacy of psychological interventions, but several barriers hampered their ability to benefit from them. Accessibility was identified as a key facilitator, whilst lack of knowledge and clear referral pathways were the main barriers impacting uptake. CONCLUSION: This study highlights key factors influencing patients' intention to engage in psychological interventions for insomnia as well as opportunities for GPs to support uptake and engagement. Routine conversations about sleep health are essential to reduce the burden of untreated insomnia in the community, and active promotion of evidence-based psychological interventions are needed.

6.
J Interpers Violence ; : 8862605241246798, 2024 Apr 16.
Artigo em Inglês | MEDLINE | ID: mdl-38624136

RESUMO

The stigma associated with sexual victimization (SV) can add to the psychological burden on survivors. We compared experiences of SV and SV stigma by survivor gender and sexuality and evaluated the relevance of public and internalized sources of this stigma to their psychological functioning. An online survey containing measures of SV type (sexual harassment and assault), public SV stigma, internalized SV stigma (self-blame, self-shame, anticipated-shame), and psychological functioning (depression, anxiety, stress, and post-traumatic stress disorder [PTSD] symptomatology) was completed by 877 women and 211 men aged 18 to 66 years (M = 30.2, SD = 8.06), of whom 73.9% were heterosexual and 26.1% identified as a sexual minority (same-sex-attracted, bisexual, pansexual, or asexual). Sexual harassment and assault were more prevalent in women and sexual minority men. Analysis of Covariance (ANCOVA) with age and SV frequency as covariates also revealed poorer psychological functioning in sexual minority men, and higher levels of SV stigma in sexual minority women and men. Multigroup path analyses further showed that exposure to public stigma was associated with poorer psychological functioning, that internalized stigma partly mediated these associations, and that the magnitude of the associations (particularly those involving self-shame and anticipated shame) was often greater in men and sexual minorities. The results add to our understanding of the role of gender and sexuality in the experience, internalization, and psychological impact of SV-related stigma on survivors. The results also highlight the need for societal shifts toward acknowledging and validating experiences of SV in men and sexual minorities, alongside women, and the development of intersectionality-informed interventions for SV stigma in survivors.

7.
Ir J Med Sci ; 192(2): 605-611, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-35503161

RESUMO

BACKGROUND: Transcatheter aortic valve implantation-related infective endocarditis (TAVI-IE) is a well-recognised and serious complication following TAVI. The purpose of this study was to describe the clinical characteristics, microorganism spectrum, and outcomes of TAVI-IE in an Irish context. METHODS: A prospective registry was used to assess the baseline demographics, procedural variables, and clinical outcomes of patients undergoing TAVI between 2009 and 2020 at two tertiary referral Irish Hospitals. RESULTS: A total of 733 patients underwent TAVI during the study period. During a follow-up duration of 1,949 person-years (median 28 months), TAVI-IE occurred in 17 (2.3%) patients. The overall incidence was 0.87 per 100 person-years and the median time from TAVI to presentation with IE was 7 months [IQR: 5-13 months]. In those who developed TAVI-IE, the mean age was 78.7 years, 70.5% were male, and there was a trend towards more permanent pacemaker implantations post-TAVI (17.6% vs. 5.86%; p = 0.08). The dominant culprit microorganisms were streptococci (41.1%) and four (23.5%) cases were attributed to dental seeding. Major complications of TAVI-IE included one (5.8%) stroke, one (5.8%) in-hospital death, and two (11.7%) urgent surgical aortic valve replacements. The Kaplan-Meier estimate of survival at 1-year was 82% (95% CI = 55-95). CONCLUSIONS: This Irish cohort of TAVI-IE exhibited a similar incidence and time to presentation compared to prior international registries; however, the 1-year mortality rate was comparatively lower. The need for rigorous dental clearance pre-TAVI and maintenance of dental health post-TAVI is underscored by the high prevalence of oral streptococcus species in this cohort.


Assuntos
Estenose da Valva Aórtica , Endocardite Bacteriana , Endocardite , Infecções Relacionadas à Prótese , Substituição da Valva Aórtica Transcateter , Humanos , Masculino , Idoso , Feminino , Substituição da Valva Aórtica Transcateter/efeitos adversos , Centros de Atenção Terciária , Mortalidade Hospitalar , Estenose da Valva Aórtica/cirurgia , Infecções Relacionadas à Prótese/epidemiologia , Infecções Relacionadas à Prótese/etiologia , Infecções Relacionadas à Prótese/cirurgia , Endocardite Bacteriana/epidemiologia , Endocardite Bacteriana/etiologia , Endocardite Bacteriana/cirurgia , Endocardite/epidemiologia , Endocardite/etiologia , Endocardite/cirurgia , Fatores de Risco , Resultado do Tratamento
8.
J Alzheimers Dis ; 94(4): 1335-1342, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37393495

RESUMO

Total joint arthroplasty (TJA) implants are composed of metals, ceramics, and/or polyethylene. Studies suggest that the debris released from metal implants may possess neurotoxic properties with reports of neuropsychiatric symptoms and memory deficits, which could be relevant to Alzheimer's disease and related dementias. This exploratory study examined the cross-sectional correlation of blood metal concentrations with cognitive performance and neuroimaging findings in a convenience sample of 113 TJA patients with history of elevated blood metal concentrations of either titanium, cobalt and/or chromium. Associations with neuroimaging measures were observed but not with cognitive scores. Larger studies with longitudinal follow-up are warranted.


Assuntos
Artroplastia de Quadril , Prótese de Quadril , Humanos , Estudos Transversais , Artroplastia de Quadril/métodos , Metais , Neuroimagem , Cognição
9.
JAMA Otolaryngol Head Neck Surg ; 149(9): 837-844, 2023 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-37535372

RESUMO

Importance: Current olfactory neuroblastoma (ONB) staging systems inadequately delineate locally advanced tumors, do not incorporate tumor grade, and poorly estimate survival and recurrence. Objective: The primary aims of this study were to (1) examine the clinical covariates associated with survival and recurrence of ONB in a modern-era multicenter cohort and (2) incorporate Hyams tumor grade into existing staging systems to assess its ability to estimate survival and recurrence. Design, Setting, and Participants: This retrospective, multicenter, case-control study included patients with ONB who underwent treatment between January 1, 2005, and December 31, 2021, at 9 North American academic medical centers. Intervention: Standard-of-care ONB treatment. Main Outcome and Measures: The main outcomes were overall survival (OS), disease-free survival (DFS), and disease-specific survival (DSS) as C statistics for model prediction. Results: A total of 256 patients with ONB (mean [SD] age, 52.0 [15.6] years; 115 female [44.9%]; 141 male [55.1%]) were included. The 5-year rate for OS was 83.5% (95% CI, 78.3%-89.1%); for DFS, 70.8% (95% CI, 64.3%-78.0%); and for DSS, 94.1% (95% CI, 90.5%-97.8%). On multivariable analysis, age, American Joint Committee on Cancer (AJCC) stage, involvement of bilateral maxillary sinuses, and positive margins were associated with OS. Only AJCC stage was associated with DFS. Only N stage was associated with DSS. When assessing the ability of staging systems to estimate OS, the best-performing model was the novel modification of the Dulguerov system (C statistic, 0.66; 95% CI, 0.59-0.76), and the Kadish system performed most poorly (C statistic, 0.57; 95% CI, 0.50-0.63). Regarding estimation of DFS, the modified Kadish system performed most poorly (C statistic, 0.55; 95% CI, 0.51-0.66), while the novel modification of the AJCC system performed the best (C statistic, 0.70; 95% CI, 0.66-0.80). Regarding estimation of DSS, the modified Kadish system was the best-performing model (C statistic, 0.79; 95% CI, 0.70-0.94), and the unmodified Kadish performed the worst (C statistic, 0.56; 95% CI, 0.51-0.68). The ability for novel ONB staging systems to estimate disease progression across stages was also assessed. In the novel Kadish staging system, patients with stage VI disease were approximately 7 times as likely to experience disease progression as patients with stage I disease (hazard ratio [HR], 6.84; 95% CI, 1.60-29.20). Results were similar for the novel modified Kadish system (HR, 8.99; 95% CI, 1.62-49.85) and the novel Dulguerov system (HR, 6.86; 95% CI, 2.74-17.18). Conclusions and Relevance: The study findings indicate that 5-year OS for ONB is favorable and that incorporation of Hyams grade into traditional ONB staging systems is associated with improved estimation of disease progression.


Assuntos
Estesioneuroblastoma Olfatório , Neoplasias Nasais , Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Estesioneuroblastoma Olfatório/terapia , Estesioneuroblastoma Olfatório/mortalidade , Estesioneuroblastoma Olfatório/patologia , Estudos Retrospectivos , Estudos de Casos e Controles , Neoplasias Nasais/patologia , Cavidade Nasal , Análise de Sobrevida , Estadiamento de Neoplasias , Progressão da Doença
10.
Chronobiol Int ; 39(7): 1027-1035, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-35393906

RESUMO

Sleep, depressive symptoms and circadian preference are highly interconnected processes. Evidence suggests that, especially in adolescence, all processes should be considered in the assessment and treatment of patients with clinically relevant psychopathology. The SCRAM (Sleep, Circadian Rhythms, and Mood) questionnaire was developed and validated in a student sample as a promising tool to conjointly measure and separate sleep, circadian preference and depression symptomatology. The present study aims to validate a German version of the SCRAM questionnaire in an adolescent psychiatric inpatient sample. A two-step analytic strategy consisting of an exploratory factor analysis EFA followed by confirmatory factor analyses (CFA) was conducted. The EFA was run in the first half of the sample (n = 422, M = 14.92, SD = 1.67). To validate the factor structure of the EFA and the original study, two CFA`s were performed in the second half of the adolescent sample (n = 438, M = 15.07, SD = 1.68). The EFA analysis revealed a 4-factor model with 12 items. Two Sleep items and one Morningness item had cross-factor loadings. The fit indices in the CFA were good using the factor model of the original study, whereas the 4-factor model of the EFA did not converge. The German SCRAM factor model seems structurally sound in an adolescent inpatient sample, but questions remain regarding the role of diagnosis, gender, external correlates, and examining the change scores of the SCRAM scores with treatment. Before this application, further research is needed to replicate the factor structure, investigate test-retest reliability, predictive and discriminant validity and test in more generalizable samples.


Assuntos
Ritmo Circadiano , Pacientes Internados , Adolescente , Análise Fatorial , Humanos , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários
11.
Int Forum Allergy Rhinol ; 12(12): 1457-1467, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-35385606

RESUMO

OBJECTIVE: Esthesioneuroblastoma (ENB) is a rare malignant neoplasm arising from the olfactory epithelium of the cribriform plate. The goal of this study was to update our oncologic outcomes for this disease and explore prognostic factors associated with survival. MATERIALS AND METHODS: We performed a retrospective analysis of patients with ENB treated at a single tertiary care institution from January 1, 1960, to January 1, 2020. Univariate and multivariate analysis was performed. Overall survival (OS), progression-free survival (PFS), and distant metastasis-free survival (DMFS) were reported. RESULTS: Among 143 included patients, the 5-year OS was 82.3% and the 5-year PFS was 51.6%; 5-year OS and PFS have improved in the modern era (2005-present). Delayed regional nodal metastasis was the most common site of recurrence in 22% of patients (median, 57 months). On univariate analysis, modified Kadish staging (mKadish) had a negative effect on OS, PFS, and DMFS (p < 0.05). Higher Hyams grade had a negative effect on PFS and DMFS (p < 0.05). Positive margin status had a negative effect on PFS (p < 0.05). Orbital invasion demonstrated worsening OS (hazard ratio, 3.1; p < 0.05). On multivariable analysis, high Hyams grade (3 or 4), high mKadish stage (C+D), and increasing age were independent negative prognostic factors for OS (p < 0.05). High Hyams grade (3+4), high mKadish stage (C+D), age, and positive margin status were independent negative prognostic factors for PFS (p < 0.05). High Hyams grade (3+4) was an independent negative prognostic factor for DMFS (p < 0.05). CONCLUSIONS: Patients with low Hyams grade and mKadish stage have favorable 5-year OS, PFS, and DMFS.


Assuntos
Estesioneuroblastoma Olfatório , Neoplasias Nasais , Humanos , Estesioneuroblastoma Olfatório/cirurgia , Estudos Retrospectivos , Neoplasias Nasais/diagnóstico , Cavidade Nasal/patologia , Prognóstico , Estadiamento de Neoplasias
13.
Chronobiol Int ; 36(2): 265-275, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30395721

RESUMO

The sleep, circadian rhythms, and mood (SCRAM) questionnaire (Byrne, Bullock et al., 2017) was designed to concurrently measure individual differences in three clinically important functions: diurnal preference, sleep quality, and mood. The 15-item questionnaire consists of three 5-item scales named Morningness, Good Sleep, and Depressed Mood. The overarching aim of the current project was to investigate the validity and reliability of the questionnaire. Here, we report on associations investigated in three data sets. Study 1 (N = 70, 80% females) was used to examine the test-retest reliability of the questionnaire, finding strong test-retest reliability of the three scales over a 2-week period (r's ranging from 0.73 to 0.86). Study 2 (N = 183, 80% females) enabled us to examine the construct validity of the SCRAM scales against well-validated self-report measures of diurnal preference, sleep quality, and depression. Strong correlations were found between each SCRAM scale and their respective measure in bivariate analyses, and associations were robust after the inclusion of the remaining two SCRAM scales as predictors in regression analyses. Data from Study 3 (N = 42, 100% males) were used to measure the extent to which SCRAM scores correlated with objective measures of sleep-wake behavior using actigraphy. Morningness was found to be related to earlier sleep onset and offset times, and Good Sleep was related to higher sleep efficiency but to no other measures of sleep quality; Depressed Mood was not related to actigraphy measures. The findings provide provisional support for construct validity and reliability of the SCRAM questionnaire as a measure of diurnal preference, sleep quality, and depressed mood. Future research into the psychometrics of SCRAM should test the questionnaire's discriminant and predictive validity in clinical samples.


Assuntos
Afeto , Ritmo Circadiano/fisiologia , Psicometria , Sono/fisiologia , Actigrafia/instrumentação , Adolescente , Adulto , Depressão , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Autorrelato , Inquéritos e Questionários , Vigília , Adulto Jovem
14.
Neurosci Biobehav Rev ; 99: 251-274, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30721729

RESUMO

Reward functioning in animals is modulated by the circadian system, but such effects are poorly understood in the human case. The aim of this study was to address this deficit via a systematic review of human fMRI studies measuring one or more proxies for circadian function and a neural reward outcome. A narrative synthesis of 15 studies meeting inclusion criteria identified 13 studies that show a circadian impact on the human reward system, with four types of proxy (circadian system biology, downstream circadian rhythms, circadian challenge, and time of day) associated with neural reward activation. Specific reward-related regions/networks subserving this effect included the medial prefrontal cortex, ventral striatum, putamen and default mode network. The circadian effect was observed in measures of both reward anticipation and reward receipt, with more consistent evidence for the latter. Findings are limited by marked heterogeneity across study designs. We encourage a systematic program of research investigating circadian-reward interactions as an adapted biobehavioural feature and as an aetiological mechanism in reward-related pathologies.


Assuntos
Ritmo Circadiano/fisiologia , Rede Nervosa/fisiologia , Neuroimagem , Recompensa , Animais , Mapeamento Encefálico/métodos , Humanos , Córtex Pré-Frontal/patologia
15.
Syst Rev ; 6(1): 237, 2017 12 02.
Artigo em Inglês | MEDLINE | ID: mdl-29197408

RESUMO

BACKGROUND: Animal research suggests that neural reward activation may be systematically modulated by sleep and circadian function. Whether humans also exhibit sleep and circadian modulation of neural reward pathways is unclear. This area is in need of further research, as it has implications for the involvement of sleep and circadian function in reward-related disorders. The aim of this paper is to describe the protocol for a pair of systematic literature reviews to synthesise existing literature related to (1) sleep and (2) circadian modulation of neural reward pathways in healthy human populations. METHODS: A systematic review of relevant online databases (Scopus, PubMed, Web of Science, ProQuest, PsycINFO and EBSCOhost) will be conducted. Reference lists, relevant reviews and supplementary data will be searched for additional articles. Articles will be included if (a) they contain a sleep- or circadian-related predictor variable with a neural reward outcome variable, (b) use a functional magnetic resonance imaging protocol and (c) use human samples. Articles will be excluded if study participants had disorders known to affect the reward system. The articles will be screened by two independent authors. Two authors will complete the data extraction form, with two authors independently completing the quality assessment tool for the selected articles, with a consensus reached with a third author if needed. Narrative synthesis methods will be used to analyse the data. DISCUSSION: The findings from this pair of systematic literature reviews will assist in the identification of the pathways involved in the sleep and circadian function modulation of neural reward in healthy individuals, with implications for disorders characterised by dysregulation in sleep, circadian rhythms and reward function. SYSTEMATIC REVIEW REGISTRATION: PROSPERO CRD42017064994.


Assuntos
Ritmo Circadiano/fisiologia , Vias Neurais/fisiologia , Recompensa , Sono/fisiologia , Encéfalo/fisiologia , Humanos , Imageamento por Ressonância Magnética/métodos , Revisões Sistemáticas como Assunto , Fatores de Tempo
16.
Chronobiol Int ; 34(2): 287-295, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28060525

RESUMO

A range of evidence suggests that human reward functioning is partly driven by the endogenous circadian system, generating 24-hour rhythms in behavioural measures of reward activation. Reward functioning is multifaceted but literature to date is largely limited to measures of self-reported positive mood states. The aim of this study was to advance the field by testing for hypothesised diurnal variation in previously unexplored components of psychological reward: 'wanting', liking, and learning using subjective and behavioural measures. Risky decision making (automatic Balloon Analogue Risk Task), affective responsivity to positive images (International Affective Pictures System), uncued self-reported discrete emotions, and learning-contingent reward (Iowa Gambling Task) were measured at 10.00 hours, 14.00 hours, and 19.00 hours in a counterbalanced repeated measures design with 50 healthy male participants (aged 18-30). As hypothesised, risky decision making (unconscious 'wanting') and ratings of arousal towards positive images (conscious wanting) exhibited a diurnal waveform with indices highest at 14.00 hours. No diurnal rhythm was observed for liking (pleasure ratings to positive images, discrete uncued positive emotions) or in a learning-contingent reward task. Findings reaffirm that diurnal variation in human reward functioning is most pronounced in the motivational 'wanting' components of reward.


Assuntos
Ritmo Circadiano , Emoções/fisiologia , Motivação , Recompensa , Adolescente , Adulto , Algoritmos , Apetite , Tomada de Decisões , Humanos , Aprendizagem , Masculino , Reprodutibilidade dos Testes , Assunção de Riscos , Adulto Jovem
17.
Front Psychol ; 8: 2105, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29250023

RESUMO

Sleep quality, circadian phase, and mood are highly interdependent processes. Remarkably, there is currently no self-report questionnaire that measures all three of these clinically significant functions: The aim of this project was to address this deficit. In Study 1, 720 participants completed a set of potential items was generated from existing questionnaires in each of the three domains and refined to follow a single presentation format. Study 2 used an independent sample (N = 498) to interrogate the latent structure. Exploratory factor analysis was used to identify a parsimonious, three-factor latent structure. Following item reduction, the optimal representation of sleep quality, circadian phase, and mood was captured by a questionnaire with three 5-item scales: Depressed Mood, Morningness, and Good Sleep. Confirmatory factor analysis found the three-scale structure provided adequate fit. In both samples, Morningness and Good Sleep were positively associated, and each was negatively associated with the Depressed Mood scale. Further research is now required to quantify the convergent and discriminant validity of its three face-valid and structurally replicated scales. The new sleep, circadian rhythms, and mood (SCRAM) questionnaire is the first instrument to conjointly measure sleep quality, circadian phase, and mood processes, and has significant potential as a clinical tool.

18.
J Exp Psychol Hum Percept Perform ; 42(6): 766-75, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-26618623

RESUMO

Efficiency of visual search in real-world tasks is affected by several factors, including scene context and target prevalence. Observers are more efficient at detecting target objects in congruent locations, and less efficient at detecting rare targets. Although target prevalence and placement often covary, previous research has investigated context and prevalence effects independently. We conducted 2 experiments to explore the potential interaction between scene context and target prevalence effects. In Experiment 1, we varied target prevalence (high, low) and context (congruent, incongruent), and, for congruent contexts, target location (typical, atypical). Experiment 2 focused on the interaction between target prevalence (high, low) and location (typical, atypical) for congruent contexts, and recorded observers' eye movements to examine search strategies. Observers were poorer at detecting low versus high prevalence targets; however, prevalence effects were significantly reduced for targets in typical, congruent locations compared with atypical or incongruent locations. Eye movement analyses in Experiment 2 revealed this was related to observers dwelling disproportionately on the most typical target locations within a scene. This suggests that a byproduct of contextual guidance within scenes is that placing targets in unexpected or atypical locations will further increase miss rates for uncommon targets, which has implications for real-world situations in which rare targets appear in unexpected locations. Although prevalence effects are robust, our results suggest potential for mitigating the negative consequences of low prevalence through targeted training that teaches observers where to focus their search. (PsycINFO Database Record


Assuntos
Atenção/fisiologia , Desempenho Psicomotor/fisiologia , Percepção Espacial/fisiologia , Percepção Visual/fisiologia , Adolescente , Adulto , Feminino , Humanos , Masculino , Adulto Jovem
19.
Spec Care Dentist ; 22(3): 99-102, 2002.
Artigo em Inglês | MEDLINE | ID: mdl-12240894

RESUMO

This study reports findings from a survey of dental fear in a special needs dental clinic population. Subjects were recruited from the University of Washington's Dental Education in Care of Persons With Disabilities (DECOD) clinical program (n = 132). Dental fears were assessed using the Kleinknecht Dental Report. Fear levels were examined among patients with differing categories of primary disabilities and between genders, races and educational levels. Some level of dental fear was reported by 43.2% of the respondents, indicating that dental fear may be an important factor in dental care for this population. Gender and educational level were significantly associated with fear levels (both p < 0.05). Significant differences in fear levels were found between individuals with differing classes of disability. Accompanying caregivers also were interviewed (n = 72) to allow for a comparison of patient and caregiver perceptions. Both patient and caregiver were interviewed whenever possible to create paired reports. Generally, caregivers significantly overestimated fear levels compared with patients (p < 0.01). However, when scores were compared in matched caregiver-patient analyses, the fear scores were not significantly different, indicating that caregivers accurately estimated their client's level of dental fear. A regression model including disability group, gender, and years of education was significant for predicting fear level as measured by the Kleinknecht survey (p = 0.02). We conclude that dental fear may be a significant, though little understood problem for a population of persons with disabilities as well as for their oral care providers, and that further investigation is needed.


Assuntos
Ansiedade ao Tratamento Odontológico/classificação , Assistência Odontológica para a Pessoa com Deficiência/psicologia , Pessoas com Deficiência/classificação , Adulto , Análise de Variância , Atitude Frente a Saúde , Cuidadores , Transtornos Cognitivos/classificação , Ansiedade ao Tratamento Odontológico/psicologia , Assistência Odontológica para Doentes Crônicos , Clínicas Odontológicas , Escolaridade , Feminino , Humanos , Masculino , Análise por Pareamento , Transtornos Mentais/classificação , Pessoa de Meia-Idade , Transtornos dos Movimentos/classificação , Análise de Regressão , Fatores Sexuais
20.
J Clin Oncol ; 29(22): 2993-3000, 2011 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-21690472

RESUMO

PURPOSE: Contralateral prophylactic mastectomy (CPM) rates in women with unilateral breast cancer are increasing despite controversy regarding survival advantage. Current scrutiny of the medical costs led us to evaluate the cost-effectiveness of CPM versus routine surveillance as an alternative contralateral breast cancer (CBC) risk management strategy. METHODS: Using a Markov model, we simulated patients with breast cancer from mastectomy to death. Model parameters were gathered from published literature or national databases. Base-case analysis focused on patients with average-risk breast cancer, 45 years of age at treatment. Outcomes were valued in quality-adjusted life-years (QALYs). Patients' age, risk level of breast cancer, and quality of life (QOL) were varied to assess their impact on results. RESULTS: Mean costs of treatment for women age 45 years are comparable: $36,594 for the CPM and $35,182 for surveillance. CPM provides 21.22 mean QALYs compared with 20.93 for surveillance, resulting in an incremental cost-effectiveness ratio (ICER) of $4,869/QALY gained for CPM. To prevent one CBC, six CPMs would be needed. CPM is no longer cost-effective for patients older than 70 years (ICER $62,750/QALY). For BRCA-positive patients, CPM is clearly cost-effective, providing more QALYs while being less costly. In non-BRCA patients, cost-effectiveness of CPM is highly dependent on assumptions regarding QOL for CPM versus surveillance strategy. CONCLUSION: CPM is cost-effective compared with surveillance for patients with breast cancer who are younger than 70 years. Results are sensitive to BRCA-positive status and assumptions of QOL differences between CPM and surveillance patients. This highlights the importance of tailoring treatment for individual patients.


Assuntos
Neoplasias da Mama/prevenção & controle , Neoplasias da Mama/cirurgia , Custos Diretos de Serviços , Mastectomia Radical Modificada/economia , Preferência do Paciente , Vigilância da População , Prevenção Secundária/economia , Adulto , Idoso , Neoplasias da Mama/economia , Fatores de Confusão Epidemiológicos , Análise Custo-Benefício , Feminino , Humanos , Cadeias de Markov , Pessoa de Meia-Idade , Qualidade de Vida , Anos de Vida Ajustados por Qualidade de Vida , Projetos de Pesquisa , Medição de Risco , Fatores de Risco , Prevenção Secundária/métodos , Estados Unidos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA