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1.
Pediatrics ; 153(4)2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38511235

RESUMO

Acquired hemophilia is caused by acquired autoantibodies to 1 of the factors of the coagulation cascade, usually factor VIII or IX, and is an exceedingly rare phenomenon in children. The finding of an acquired factor VIII inhibitor in a pediatric patient with idiopathic multicentric Castleman disease has never been reported. Patients with acquired hemophilia can have life-threatening bleeds that are refractory to blood product support, requiring bypassing agents to manage bleeding symptoms. We present the novel finding of acquired hemophilia resulting from an autoantibody to factor VIII in a pediatric patient with idiopathic multicentric Castleman disease and discuss the optimal management of bleeding in a patient with acquired hemophilia.


Assuntos
Hiperplasia do Linfonodo Gigante , Hemofilia A , Humanos , Criança , Fator VIII , Hemofilia A/complicações , Hemofilia A/diagnóstico , Hiperplasia do Linfonodo Gigante/complicações , Hiperplasia do Linfonodo Gigante/diagnóstico , Hemorragia/etiologia , Autoanticorpos
2.
PLoS One ; 19(2): e0298134, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38394147

RESUMO

INTRODUCTION: Historically, university students demonstrate poor movement behaviours that could negatively impact current and future health. Recent literature has focused on identifying determinants of physical activity (PA) and sedentary behaviour (SB) in this population to inform the development of intervention strategies. However, the COVID-19 pandemic substantially restricted movement behaviours in this population, meaning findings of previous research may no longer be applicable within the current societal context. The present study explored the longitudinal relationships between pre-pandemic psychological, behavioural and anthropometric factors, and the movement behaviours of UK university students nine months following the outbreak of COVID-19. METHODS: Mental wellbeing (MWB), perceived stress (PS), body mass index (BMI), SB, and PA were assessed using an online self-report survey in 255 students prior to (October 2019) and nine months following (October 2020) the first confirmed case of COVID-19 in the UK. Path analysis was utilised to test relationships between pre-COVID mental wellbeing, perceived stress and BMI, and movement behaviours during the pandemic. RESULTS: The fit of the path analysis model was good (χ2 = 0.01; CMIN = 0.10, CFI = 1.00, RMSEA = 0.00). Pre-covid MWB and PS positively influenced PA (ß = 0.29; ß = 0.24; P < 0.01) but not SB (ß = -0.10; ß = 0.00; P = 0.79) during the pandemic. Additionally, pre-pandemic SB and PA positively influenced SB and PA during the pandemic respectively (SB: ß = 0.26; P < 0.01) (PA: ß = 0.55; P < 0.01). Pre-pandemic BMI did not influence any measured variable during the pandemic (PA: ß = 0.03 and P = 0.29; SB: ß = 0.06 and P = 0.56), and there was no mediating effect of PA on SB during the pandemic (ß = -0.26; P = 0.14). CONCLUSION: These findings indicate that pre-covid mental health and movement behaviours had a direct positive influence on PA during the pandemic, but not SB. This longitudinal study demonstrates the influence that prior psychological and behavioural factors have in determining university students' response to periods of elevated stress and uncertainty, furthering our understanding of determinants of health-related behaviours in students.


Assuntos
COVID-19 , Humanos , COVID-19/epidemiologia , Pandemias , Comportamento Sedentário , Universidades , Estudos Longitudinais , Exercício Físico/psicologia , Estudantes/psicologia
3.
Antioxidants (Basel) ; 12(9)2023 Sep 07.
Artigo em Inglês | MEDLINE | ID: mdl-37760038

RESUMO

The NRF2 transcription factor is a master regulator of the cellular oxidant/electrophile response and a drug target for the prevention/treatment of chronic diseases. A major mechanism of NRF2 activation is its escape from rapid degradation, and newly synthesized NRF2 induces cytoprotective protein expression through its cognate antioxidant response elements (AREs). However, oxidative stress can also inhibit global protein translation, thereby potentially inhibiting NRF2 protein accumulation. H2O2 has been shown to be a relatively weak inducer of NRF2 in comparison with electrophiles. In the current study, we evaluated whether levels of H2O2 that activate the NRF2/ARE pathway inhibit NRF2 protein synthesis in HaCaT keratinocytes. A weak maximum induction was observed for H2O2 in comparison with electrophiles, both for NRF2 protein accumulation and ARE reporter activation (~10-fold compared to ≥100-fold activation). At similar H2O2 concentrations, both NRF2 protein synthesis and global protein synthesis were inhibited. The manganese porphyrin antioxidant MnTMPyP rescued both global protein synthesis and NRF2 protein synthesis from H2O2 inhibition and increased ARE reporter activation. Similar results were observed for the diphenol di-tert-butylhydroquinone (dtBHQ). In conclusion, induction of the NRF2/ARE pathway by H2O2 and dtBHQ-derived oxidative species can be limited by inhibition of NRF2 protein synthesis, likely by arrest of global protein synthesis.

4.
BMJ Open ; 13(6): e070323, 2023 06 13.
Artigo em Inglês | MEDLINE | ID: mdl-37311634

RESUMO

OBJECTIVE: To identify the breadth and range of follow-up interventions currently provided to people after minor stroke with a focus on the definitions used for minor stroke, intervention components, intervention theory and outcomes used. These findings will inform the development and feasibility testing of a pathway of care. DESIGN: Scoping review. SEARCH STRATEGY: The final search was run in January 2022. Five databases were searched-EMBASE, MEDLINE, CINAHL, British Nursing Index and PsycINFO. Grey literature was also searched. Title and abstract screening and full-text reviews were conducted by two researchers and a third was involved when differences of opinion existed. A bespoke data extraction template was created, refined and then completed. The Template for Intervention Description and Replication (TIDieR) checklist was used to describe interventions. RESULTS: Twenty-five studies, using a range of research methodologies were included in the review. A range of definitions were used for minor stroke. Interventions focused largely on secondary prevention and management of increased risk of further stroke. Fewer focused on the management of hidden impairments experienced after minor stroke. Limited family involvement was reported and collaboration between secondary and primary care was seldom described. The intervention components, content, duration and delivery were varied as were the outcome measures used. CONCLUSION: There is an increasing volume of research exploring how best to provide follow-up care to people after minor stroke. Personalised, holistic and theory-informed interdisciplinary follow-up is needed that balances education and support needs with adjustment to life after stroke.


Assuntos
Líquidos Corporais , Acidente Vascular Cerebral , Humanos , Seguimentos , Alta do Paciente , Lista de Checagem , Acidente Vascular Cerebral/terapia
5.
Patient Educ Couns ; 112: 107716, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37004503

RESUMO

BACKGROUND: Cancer survivors are at greater risk for COVID-19 complications, emphasizing the importance of adherence to COVID-19 prevention. Active coping mechanisms can help manage pandemic stress but disengaged coping practices can have adverse effects. OBJECTIVES: 1) Identify differences in COVID-19 coping styles and COVID-19 preventive behaviors among cancer survivors in active treatment, survivors not in treatment, and a comparison group without a cancer history. 2) Exploring variables that may predict adherence to COVID-19 preventative behaviors. PATIENT INVOLVEMENT & METHODS: This study used an online survey among two categories of cancer survivors - one group in active treatment and one group no longer in treatment - and one group without a cancer history (N = 897 total). RESULTS AND DISCUSSION: Cancer survivors in treatment were more likely to utilize both active and disengaged coping (p < .001). This could indicate that the additional COVID-19 strain is making survivors more likely to engage in coping in any way possible. Cancer survivors not in treatment were less likely to report intent to carry out COVID- 19 preventative behaviors compared to the comparison group (p = .009). Providers should understand how survivors may use both coping mechanism types because these coping strategies predict both depression and adherence to COVID-19 preventive behaviors.


Assuntos
COVID-19 , Sobreviventes de Câncer , Neoplasias , Humanos , COVID-19/epidemiologia , COVID-19/prevenção & controle , Pandemias/prevenção & controle , Adaptação Psicológica , Sobreviventes
6.
J Palliat Med ; 26(7): 922-929, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-36603111

RESUMO

Background: Demographic factors, such as disease context and family relationships, are communication mediators and moderators; however, little is known about how understanding these factors can improve caregiver communication with providers. Recognition of communication differences among caregivers may aid the development of approaches to improve serious illness communication. Objective: To explore whether caregiver communication differs by disease context (cancer vs. dementia) and caregiver communication type (Manager, Carrier, Partner, and Lone). Caregiver communication type is based on communication patterns between the care recipient and caregiver. Design and Measurements: Caregivers of persons with cancer and/or dementia were surveyed from a U.S. national research registry website. Measures of caregiver communication included information needs, communication confidence, perception of provider understanding of the caregiver, perceived frequency of caregiver assessment, and caregiver stress. Analysis of variance (ANOVA) determined significant differences between caregiver communication (p < 0.05) based on disease context and caregiver communication type. Results: Cancer caregivers reported higher unrecognized-demanded information states (i.e., not recognizing information was needed), more communication confidence, and more frequent caregiver assessment compared to dementia caregivers. Among caregiver communication types, Manager caregiver types were more confident communicating than other caregiver types and perceived greater understanding by providers than the Lone caregiver type. Manager caregivers reported significantly less stress than other caregiver communication types. Conclusions: Understanding disease context and caregiver communication type may help improve caregiver communication with health care providers.


Assuntos
Demência , Neoplasias , Humanos , Cuidadores , Comunicação , Apoio Social
7.
World Psychiatry ; 22(1): 45-46, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36640381
8.
Health Commun ; 38(14): 3252-3263, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36415031

RESUMO

This case study focuses on a video telehealth consult to discuss genetic testing results. Participants include a Genetic Counselor (GC) and a Patient (P) previously diagnosed with ovarian cancer who is currently undergoing chemotherapy treatments. Utilizing conversation analysis (CA), attention is first given to a series of interactional dilemmas as GC delivers and P responds to negative, uncertain, and complex test results. Specific findings address practices employed by GC to structure the encounter and establish authority, impacts on P's participation and understandings, recurring and at times problematic orientations to "negative" findings, and inherent ambiguities faced by GC and P when attempting to discern good and bad news. Close examination of these moments provides a unique opportunity to identify, describe, and explain genetic counseling as a co-produced, interactional achievement. These findings are then integrated with patient's post-counseling survey (susceptibility, anxiety, uncertainty, fear, and hope), including reported experiences which broaden understandings of the interactional environment. Specific recommendations are raised for improving counseling skills, enhancing patients' understandings, and building therapeutic alliances addressing both patients' emotional circumstances and the complexities of genetic test results.


Assuntos
Aconselhamento Genético , Telemedicina , Humanos , Incerteza , Aconselhamento , Comunicação
9.
Artigo em Inglês | MEDLINE | ID: mdl-36078836

RESUMO

Evangelical Christians are among the most hesitant to get the COVID-19 vaccine. This study examined the extent to which COVID-19 vaccination uptake among Evangelicals is explained by demographic characteristics, Health Belief Model constructs, and faith-based support factors. Survey research firm Qualtrics recruited 531 U.S. adults and conducted a survey to explore predictors of COVID-19 vaccine uptake among people who self-identified as Evangelicals in September 2021. A logistic regression showed that those reporting high perceived benefits of the COVID-19 vaccine were more likely to be vaccinated, while those reporting high perceived barriers were less likely to be vaccinated. Those whose healthcare provider asked them about the vaccine were more likely to be vaccinated than those whose healthcare provider did not ask. Finally, while those who reported information seeking from religious leaders were less likely to be vaccinated, those who reported more faith-based support for vaccination were more likely to be vaccinated. In addition to beliefs about benefits and barriers to vaccination, the role of healthcare providers and clergy were important factors influencing vaccination status. Intervention efforts that capitalize on partnerships between health providers and clergy in supportive congregations may be able to reach undecided Evangelicals.


Assuntos
Vacinas contra COVID-19 , COVID-19 , Adulto , COVID-19/prevenção & controle , Clero , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Vacinação , Hesitação Vacinal
10.
J Interpers Violence ; 37(23-24): NP22226-NP22249, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-35164586

RESUMO

This study experimentally examines the effects of perpetrator sex (male or female), relationship context (heterosexual or homosexual), and the type of media framing (episodic or thematic) on endorsement for public health perspectives about intimate partner violence (IPV) and punishment preferences for IPV perpetrators. Participants (N = 750) were randomly assigned to a condition, exposed to a composite news story, and then completed a survey. Manipulation check responses demonstrated a pattern suggesting that participants had difficulty attending to details of IPV in stories where the perpetrator was a woman, or where the violence occurred in a homosexual relationship. Results revealed significant interaction effects for the endorsement of public health perspectives and for perpetrator punishment preferences. Results for the endorsement of public health perspectives showed that thematic framing caused stronger support only when the perpetrator was a heterosexual man. Results for perpetrator punishment preferences revealed a pattern where participants preferred stronger punishments for heterosexual male perpetrators over any other group. Participants did not distinguish in their punishment preferences for male or female homosexual perpetrators, but these were still stronger than their punishment preferences for heterosexual female perpetrators. Theoretical implications are presented with attention to extending research about media portrayals of IPV, and discussion is offered concerning practical considerations for public health support services that address IPV.


Assuntos
Heterossexualidade , Homossexualidade , Violência por Parceiro Íntimo , Meios de Comunicação de Massa , Feminino , Humanos , Masculino , Homossexualidade Feminina , Violência por Parceiro Íntimo/legislação & jurisprudência , Minorias Sexuais e de Gênero , Violência , Punição , Controle Social Formal
11.
Ann Otol Rhinol Laryngol ; 131(9): 962-970, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34622693

RESUMO

OBJECTIVES: To investigate how the symptoms of mucus and cough impact adults living with laryngotracheal stenosis, and to use this information to guide future research and treatment plans. METHODS: A survey was developed with the support of patient advisors and distributed to people suffering with laryngotracheal stenosis. The survey comprised 15 closed and open questions relating to mucus and cough and included the Leicester Cough Questionnaire (LCQ). Descriptive statistics, X2 and thematic analyses were completed. RESULTS: In total, 641 participants completed the survey, with 83.62% (n = 536) reporting problems with mucus; 79% having daily issues of varying severity that led to difficulties with cough (46.18%) and breathing (20.90%). Mucus affected voice and swallowing to a lesser degree. Respondents described a range of triggers; they identified smoky air as the worst environmental trigger. Strategies to manage mucus varied widely with drinking water (72.26%), increasing liquid intake in general (49.35%) and avoiding or reducing dairy (45.32%) the most common approaches to control symptoms. The LCQ showed a median total score of 14 (interquartile range 11-17) indicative of cough negatively affecting quality of life. Thematic analysis of free text responses identified 4 key themes-the Mucus Cycle, Social impact, Psychological impact, and Physical impact. CONCLUSION: This study shows the relevance of research focusing on mucus and cough and its negative impact on quality of life, among adults with laryngotracheal stenosis. It demonstrates the inconsistent advice and management strategies provided by clinicians for this issue. Further research is required to identify clearer treatment options and pathways.


Assuntos
Laringoestenose , Estenose Traqueal , Adulto , Constrição Patológica , Tosse/terapia , Humanos , Laringoestenose/complicações , Muco , Qualidade de Vida , Inquéritos e Questionários , Estenose Traqueal/complicações
12.
Artigo em Inglês | MEDLINE | ID: mdl-36612674

RESUMO

Understanding local public attitudes toward receiving vaccines is vital to successful vaccine campaigns. Social media platforms may help uncover vaccine sentiments during infectious disease outbreaks at the local level, and whether offline local events support vaccine-promotion efforts. Communication Infrastructure Theory (CIT) served as a guiding framework for this case study of the San Diego region examining local public sentiment toward vaccines expressed on Twitter during the COVID-19 pandemic. We performed a sentiment analysis (including positivity and subjectivity) of 187,349 tweets gathered from May 2020 to March 2021, and examined how sentiment corresponded with local vaccine deployment. The months of November and December (52.9%) 2020 saw a majority of tweets expressing positive sentiment and coincided with announcements of offline local events signaling San Diego's imminent deployment of COVID-19 vaccines. Across all months, tweets remained mostly objective (never falling below 63%). In terms of CIT, considering multiple levels of the Story Telling Network in online spaces, and examining sentiment about vaccines on Twitter may help scholars to explore the Communication Action Context, as well as cultivate positive community attitudes to improve the Field of Health Action regarding vaccines. Real-time analysis of local tweets during development and deployment of new vaccines may help monitor local public responses and guide promotion of immunizations in communities.


Assuntos
COVID-19 , Mídias Sociais , Vacinas , Humanos , COVID-19/epidemiologia , COVID-19/prevenção & controle , Vacinas contra COVID-19 , Pandemias/prevenção & controle , Atitude
13.
Annu Int Conf IEEE Eng Med Biol Soc ; 2021: 1495-1498, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34891568

RESUMO

Gastric ablation has recently emerged as a promising potential therapy for bioelectrical dysrhythmias that underpin many gastrointestinal disorders. Despite similarities to well-developed cardiac ablation, gastric ablation is in early development and has thus far been limited to temperature-controlled, non-irrigated settings. A computational model of gastric ablation is needed to enable in silico testing and optimization of ablation parameters and techniques. In this study, we developed a computational model of radio-frequency (RF) gastric ablation. Model parameters and boundary conditions were established based on the current in vivo experimental application of serosal gastric ablation with a non-irrigated RF catheter. The Pennes bioheat transfer equation was used to model the thermal component of RF ablation, and Laplace's equation was used to model the Joule heating component. Tissue, blood, and catheter parameters were obtained from literature. The performance of the model was compared to previously established experimental values of temperature measured from various distances from the catheter tip. The model produced temperature estimations that were within 6% of the maximum experimental temperature at 2.5 mm from the catheter, and within 13% of the maximum temperature change at 4.7 mm. This model now provides a computational basis through which to conduct in silico testing of gastric ablation, and can be usefully applied to optimize gastric ablation parameters. In future, the model can be expanded to include irrigation of the catheter tip and power-controlled RF settings.Clinical Relevance- This work presents a computational model of gastric ablation that can now guide the in silico development of effective ablation parameters and therapeutic strategies, expanding the breadth of this promising therapy.


Assuntos
Ablação por Cateter , Catéteres , Humanos , Estômago/cirurgia , Temperatura , Irrigação Terapêutica
14.
Artigo em Inglês | MEDLINE | ID: mdl-33809313

RESUMO

Initial studies indicated that student mental health was impaired during the early stages of the pandemic and that maintaining/improving physical activity gave some protection from mental illness. However, as the pandemic persists, these data may not reflect current circumstances and may have been confounded by exam stress. METHODS: This study used an online survey to assess the changes in, and associations between, mental health and movement behaviours in 255 UK university students from before the COVID-19 pandemic (October 2019) to 9 months following the UK's first confirmed case (October 2020). Changes in and associations between mental wellbeing, perceived stress, physical activity, and sedentary behaviour were assessed using a mixed model ANOVA; a multiple linear regression model determined the predictive value of variables associated with Δ mental wellbeing. RESULTS: Mental wellbeing and physical activity decreased (45.2 to 42.3 (p < 0.001); 223 to 173 min/week (p < 0.001)), whereas perceived stress and time spent sedentary increased (19.8 to 22.8 (p < 0.001); 66.0 to 71.2 h/week (p = 0.036)). Δ perceived stress, Δ sedentary behaviour and university year accounted for 64.7%, 12.9%, and 10.1% of the variance in Δ mental wellbeing (p < 0.001; p = 0.006; p = 0.035). CONCLUSION: The COVID-19 pandemic is having a sustained negative impact on student mental health and movement behaviour.


Assuntos
COVID-19 , Saúde Mental , Humanos , Estudos Longitudinais , Pandemias , SARS-CoV-2 , Estudantes , Reino Unido/epidemiologia
15.
BMC Health Serv Res ; 21(1): 400, 2021 Apr 29.
Artigo em Inglês | MEDLINE | ID: mdl-33926441

RESUMO

BACKGROUND: There are increasing opportunities for healthcare professionals outside medicine to be involved in and lead clinical research. However, there are few roles within these professions that include time for research. In order to develop such roles, and evaluate effective use of this time, the range of impacts of this clinical academic activity need to be valued and understood by healthcare leaders and managers. To date, these impacts have not been comprehensively explored, but are suggested to extend beyond traditional quantitative impact metrics, such as publications, citations and funding awards. METHODS: Ten databases, four grey literature repositories and a naïve web search engine were systematically searched for articles reporting impacts of clinical academic activity by healthcare professionals outside medicine. Specifically, this did not include the direct impacts of the research findings, rather the impacts of the research activity. All stages of the review were performed by a minimum of two reviewers and reported impacts were categorised qualitatively according to a modified VICTOR (making Visible the ImpaCT Of Research) framework. RESULTS: Of the initial 2704 identified articles, 20 were eligible for inclusion. Identified impacts were mapped to seven themes: impacts for patients; impacts for the service provision and workforce; impacts to research profile, culture and capacity; economic impacts; impacts on staff recruitment and retention; impacts to knowledge exchange; and impacts to the clinical academic. CONCLUSIONS: Several overlapping sub-themes were identified across the main themes. These included the challenges and benefits of balancing clinical and academic roles, the creation and implementation of new evidence, and the development of collaborations and networks. These may be key areas for organisations to explore when looking to support and increase academic activity among healthcare professionals outside medicine. The modified VICTOR tool is a useful starting point for individuals and organisations to record the impact of their research activity. Further work is needed to explore standardised methods of capturing research impact that address the full range of impacts identified in this systematic review and are specific to the context of clinical academics outside medicine.


Assuntos
Pessoal de Saúde , Organizações , Atenção à Saúde , Humanos
16.
Health Commun ; 35(3): 297-307, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-30592223

RESUMO

This study examined the effects of threat label (i.e., the name assigned to a health threat) and source accent (i.e., the source's manner of pronunciation) on Appalachian residents' acceptance of oral health promotion messages. Participants (N = 348) listened to an audiotaped oral health promotion message about tooth decay or Mountain Dew Mouth; the message was delivered either in a standard American English or a Southern accent. Compared to the label Mountain Dew Mouth, the label tooth decay elevated perceptions of threat susceptibility, threat severity, and response-efficacy and resulted in higher message acceptance. The effect of threat label on message acceptance was mediated by severity perceptions. Participants attributed more status to the source and agreed more with her message when she spoke in a standard than a Southern accent. The effect of source accent on message acceptance was mediated by status perceptions. These findings suggest that the success of persuasive health messages depends not only on message content (i.e., what is said), but also on how that content is linguistically framed and delivered (i.e., how it is said).


Assuntos
Promoção da Saúde , Saúde Bucal , Comunicação Persuasiva , Região dos Apalaches , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Linguística
17.
Free Radic Biol Med ; 124: 532-540, 2018 08 20.
Artigo em Inglês | MEDLINE | ID: mdl-29969714

RESUMO

The transcription factor Nrf2 is a master regulator of antioxidant and cytoprotective genes, binding to antioxidant response elements (AREs) in their promoter regions. Due to the therapeutic role of the Nrf2/ARE system in oxidative homeostasis, its activation has been investigated in many pre-clinical and clinical trials for common chronic diseases. One of the most promising Nrf2 activators is sulforaphane, the subject of over 50 clinical trials. In this work, we examine the effect of reactive oxygen species (ROS) on sulforaphane's Nrf2/ARE activation in the non-tumorigenic keratinocyte cell line HaCaT, with the non-arylating oxidizable phenol, 2,5-di-tert-butylhydroquinone (dtBHQ), as the source of ROS. We find that, in combination with 2.5 µM sulforaphane, dtBHQ markedly enhances ARE-regulated gene expression, including expression of the cytoprotective proteins aldo-keto reductase family 1 member C1 (AKR1C1) and heme oxygenase-1 (HO-1). Additionally, sulforaphane's therapeutic window is widened by 12.5 µM dtBHQ. Our data suggest that H2O2 generated by dtBHQ oxidation is responsible for these effects, as shown by inclusion of catalase and by co-treatment with sulforaphane and H2O2. While sulforaphane treatment causes Nrf2 protein to accumulate as expected, interestingly, dtBHQ and H2O2 appear to act on targets downstream of Nrf2 protein accumulation to enhance sulforaphane's ARE-regulated gene expression. Inclusion of dtBHQ or H2O2 with sulforaphane does not increase Nrf2 protein levels, and catalase has little effect on Nrf2 protein levels in the presence of sulforaphane and dtBHQ. Surprisingly, dtBHQ suppresses Nrf2 protein synthesis. Inclusion of a superoxide dismutase mimetic with sulforaphane and dtBHQ partly rescues Nrf2 suppression and significantly further increases sulforaphane's efficacy for ARE-reporter expression. Thus, there is a "Dr. Jekyll and Mr. Hyde" effect of ROS: ROS enhance sulforaphane's ARE-regulated gene expression even as they also inhibit Nrf2 protein synthesis. This unexpected finding reveals the degree to which targets in the ARE pathway downstream of Nrf2 protein accumulation contribute to gene expression. The results presented here provide a model system for significant enhancement of sulforaphane's potency with small molecule co-treatment.


Assuntos
Elementos de Resposta Antioxidante/efeitos dos fármacos , Antioxidantes/farmacologia , Hidroquinonas/farmacologia , Isotiocianatos/farmacologia , Fator 2 Relacionado a NF-E2/metabolismo , Espécies Reativas de Oxigênio/metabolismo , Linhagem Celular , Regulação da Expressão Gênica/fisiologia , Humanos , Fator 2 Relacionado a NF-E2/efeitos dos fármacos , Oxirredução , Fenóis/farmacologia , Sulfóxidos
18.
Am J Health Promot ; 32(1): 143-152, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-29214815

RESUMO

PURPOSE: This study details the persuasive message development for a theory-based campaign designed to increase compliance with a university's tobacco-free policy. APPROACH: The theory of planned behavior (TPB) guided message design and evaluation for focus group-tested messages that were adapted to the context of complying with a tobacco-free policy. SETTING: The study was conducted at a university located in the tobacco belt. PARTICIPANTS: Undergraduate focus group participants (n = 65) were mostly male (69%), white (82%), and freshman (62%) who smoked at least 1 cigarette in the last 30 days; on-campus smoking percentages were never/rare (60%), occasionally (23%), and often/frequently (16%). METHOD: Data analysis used a theoretical thematic approach to identify how the TPB constructs related to perceptions of message effectiveness. RESULTS: Participants responded favorably to attitudinal strategies about health, respect, and university figures; they rejected approaches they considered juvenile and offensive. They also discussed the impact of noncompliance and avoiding overgeneralized statements for addressing subjective norms, suggesting shortening text, adjusting picture location, and emphasizing the importance of compliance to increase perceptions of behavioral control. CONCLUSION: Applying theory to preexisting messages is challenging. The design approach in this study is an evidence-based strategy that can be used as a universal process for message adaptation. Results offer health promotion suggestions for designing messages aimed at improving undergraduate smokers' willingness to comply with tobacco-free campus policies.


Assuntos
Terapia Comportamental/métodos , Fidelidade a Diretrizes , Promoção da Saúde/métodos , Política Antifumo , Abandono do Hábito de Fumar/métodos , Abandono do Hábito de Fumar/psicologia , Estudantes/psicologia , Adolescente , Adulto , Feminino , Grupos Focais , Humanos , Masculino , Teoria Psicológica , Estudantes/estatística & dados numéricos , Estados Unidos , Adulto Jovem
19.
Artigo em Inglês | MEDLINE | ID: mdl-28891936

RESUMO

This study experimentally evaluated the short-term effects of the Arizona Attorney General's cybersafety promotion presentation, a key component of which is cyberbullying prevention. Fifty-one parents of children attending a middle school in the southwestern United States participated in the study. Results reveal parents who viewed the presentation believed their children to be more susceptible to cyberbullying, and indicated that they were more likely to talk to their children about saving evidence, not retaliating, and telling an adult compared to parents who had not viewed the presentation. The theoretical and practical implications of these results are discussed.


Assuntos
Bullying/prevenção & controle , Vítimas de Crime , Internet , Pais , Estudantes , Adolescente , Adulto , Arizona , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Instituições Acadêmicas
20.
Violence Vict ; 32(5): 897-918, 2017 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-28810944

RESUMO

This study employed a mixed method approach to examine the effects of participant sex, perpetrator sex, and severity of violence on perceptions of intimate partner violence (IPV) perpetrators. Quantitative participants (n = 449) completed a survey and qualitative participants (n = 31) participated in a focus group or an interview. Participants believed that it was more likely male perpetrators had prior involvement in IPV. Participants rated stories of female perpetrators as more abnormal than stories of male perpetrators. Participants in the weak severity of violence condition had lower evaluations of responsibility than the strong or fatal severity of violence conditions and only women were discerning about perpetrator sex in their ratings of responsibility. Theoretical implications extend intimate terrorism and defensive attribution theory.


Assuntos
Vítimas de Crime/psicologia , Criminosos/psicologia , Relações Interpessoais , Violência por Parceiro Íntimo/psicologia , Parceiros Sexuais/psicologia , Percepção Social , Adulto , Análise de Variância , Atitude , Feminino , Grupos Focais , Humanos , Masculino , Distribuição Aleatória , Distribuição por Sexo , Comportamento Social , Estudantes , Inquéritos e Questionários , Estados Unidos , Universidades , Adulto Jovem
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