Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 59
Filtrar
Mais filtros

Base de dados
Tipo de documento
Intervalo de ano de publicação
1.
Attach Hum Dev ; 21(1): 57-69, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30406721

RESUMO

Individuals' social experiences are associated with their mental health, physical health, and even mortality. Over the last 30 years, researchers have examined the ways in which these social experiences might be associated with chronic inflammation - a component underlying many of the chronic diseases of aging. Little research, however, has examined the role of adults' attachment style as a specific social component that might be associated with inflammation. In the present study, we utilized data from a sample of 59 African-American adults from the Maryland Adolescent Development in Context Study (MADICS) to examine the links between attachment avoidance and attachment anxiety and C-reactive protein (CRP) and interleukin (IL)-6. After controlling for demographic characteristics, body mass index, and depressive symptoms, attachment avoidance and anxiety were associated with IL-6 but not CRP. This study adds to the growing body of research identifying the wide range of social experiences associated with inflammation and further suggests that attachment relationship experiences may have implications for biological processes relevant to many chronic diseases of aging.


Assuntos
Ansiedade/fisiopatologia , Negro ou Afro-Americano , Proteína C-Reativa/biossíntese , Interleucina-6/biossíntese , Apego ao Objeto , Adulto , Ansiedade/etnologia , Depressão/etnologia , Depressão/fisiopatologia , Feminino , Humanos , Inflamação/metabolismo , Relações Interpessoais , Estudos Longitudinais , Masculino
2.
Brain Behav Immun ; 73: 331-339, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-29842903

RESUMO

OBJECTIVE: Evidence links depression and stress to more rapid progression of HIV-1 disease. We conducted a randomized controlled trial to test whether an intervention aimed at improving stress management and emotion regulation, mindfulness-based stress reduction (MBSR), would improve immunological (i.e. CD4+ T-cell counts) and psychological outcomes in persons with HIV-1 infection. METHODS: We randomly assigned participants with HIV-1 infection and CD4 T-cell counts >350 cells/µl who were not on antiretroviral therapy in a 1:1 ratio to either an MBSR group (n = 89) or an HIV disease self-management skills group (n = 88). The study was conducted at the University of California at San Francisco. We assessed immunologic (CD4, c-reactive protein, IL-6, and d-dimer) and psychological measures (Beck Depression Inventory for depression, modified Differential Emotions Scale for positive and negative affect, Perceived stress-scale, and mindfulness) at 3, 6 and 12 months after initiation of the intervention; we used multiple imputation to address missing values. RESULTS: We observed statistically significant improvements from baseline to 3-months within the MBSR group in depression, positive and negative affect, perceived stress, and mindfulness; between group differences in change were significantly greater in the MBSR group only for positive affect (per item difference on DES-positive 0.25, 95% CI 0.049, 0.44, p = .015). By 12 months the between group difference in positive affect was not statistically significant, although both groups had trends toward improvements compared to baseline in several psychological outcomes that were maintained at 12-months; these improvements were only statistically significant for depression and negative affect in the MBSR group and perceived stress for the control group. The groups did not differ significantly on rates of antiretroviral therapy initiation (MBSR = 39%, control = 29%, p = .22). After 12 months, the mean decrease in CD4+ T-cell count was 49.6 cells/µl in participants in the MBSR arm, compared to 54.2 cells/µl in the control group, a difference of 4.6 cells favoring the MBSR group (95% CI, -44.6, 53.7, p = .85). The between group differences in other immunologic-related outcomes (c-reactive protein, IL-6, HIV-1 viral load, and d-dimer) were not statistically significant at any time point. CONCLUSIONS: MBSR improved positive affect more than an active control arm in the 3 months following the start of the intervention. However, this difference was not maintained over the 12-month follow-up and there were no significant differences in immunologic outcomes between intervention groups. These results emphasize the need for further carefully designed research if we are to translate evidence linking psychological states to immunological outcomes into evidence-based clinical practices.


Assuntos
Infecções por HIV/psicologia , Atenção Plena/métodos , Estresse Psicológico/terapia , Adulto , Ansiedade/terapia , Contagem de Linfócito CD4/métodos , Linfócitos T CD4-Positivos/imunologia , Depressão/terapia , Feminino , Soropositividade para HIV , Humanos , Masculino , Meditação/métodos , Meditação/psicologia , Pessoa de Meia-Idade , Escalas de Graduação Psiquiátrica , Qualidade de Vida , Estresse Psicológico/metabolismo , Estresse Psicológico/psicologia , Resultado do Tratamento
3.
Am J Community Psychol ; 60(1-2): 145-159, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28913882

RESUMO

Reduction of cancer-related disparities requires strategies that link medically underserved communities to preventive care. In this community-based participatory research project, a public library system brought together stakeholders to plan and undertake programs to address cancer screening and risk behavior. This study was implemented over 48 months in 20 large urban neighborhoods, selected to reach diverse communities disconnected from care. In each neighborhood, Cancer Action Councils were organized to conduct a comprehensive dynamic trial, an iterative process of program planning, implementation and evaluation. This process was phased into neighborhoods in random, stepped-wedge sequence. Population-level outcomes included self-reported screening adherence and smoking cessation, based on street intercept interviews. Event-history regressions (n = 9374) demonstrated that adherence outcomes were associated with program implementation, as were mediators such as awareness of screening programs and cancer information seeking. Findings varied by ethnicity, and were strongest among respondents born outside the U.S. or least engaged in care. This intervention impacted health behavior in diverse, underserved and vulnerable neighborhoods. It has been sustained as a routine library system program for several years after conclusion of grant support. In sum, participatory research with the public library system offers a flexible, scalable approach to reduce cancer health disparities.


Assuntos
Etnicidade , Conhecimentos, Atitudes e Prática em Saúde , Disparidades em Assistência à Saúde , Bibliotecas , Neoplasias/diagnóstico , Logradouros Públicos , Pesquisa Participativa Baseada na Comunidade , Detecção Precoce de Câncer , Feminino , Fidelidade a Diretrizes , Comportamentos Relacionados com a Saúde , Humanos , Masculino , Área Carente de Assistência Médica , Pessoa de Meia-Idade , Neoplasias/prevenção & controle , Cidade de Nova Iorque , Razão de Chances , Desenvolvimento de Programas , Abandono do Hábito de Fumar , População Urbana , Populações Vulneráveis
4.
J Soc Pers Relat ; 34(8): 1168-1185, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36714796

RESUMO

Within the field of relationship science there is increasing interest in the connections between close relationships and physical health. In the present study, we examined whether adolescents' (~12 years old) and young adults' (~20 years old) perceptions of their parents as a secure base prospectively predict C-reactive protein (CRP), a commonly used marker of inflammatory activity, at age 32 in a well-characterized sample of African Americans. We utilized existing data collected as part of the Maryland Adolescent Development in Context Study (MADICS) to construct measures of perceptions of parental secure base support (SBS), general parental support, and peer support in early adolescence and early adulthood. In the present study, SBS was operationalized as the perceived ability to depend on parents in times of need. Fifty-nine African American MADICS participants who reported on perceived support in early adolescence and early adulthood participated in a follow-up home visit at age 32 during which serum CRP was measured via a blood draw. After controlling for inflammation-related confounds (e.g., tobacco use, body mass index), adolescents' perceptions of parental SBS, but not peer support or general parental support, predicted lower CRP values at age 32 (b = -.92, SE = .34, p < .05). None of the support variables in early adulthood predicted CRP at 32 years. This study adds to a growing literature on relationships and health-related outcomes and provides the first evidence for a link between parental SBS in adolescence and a marker of inflammatory activity in adulthood.

5.
Oncologist ; 21(12): 1414-e9, 2016 12.
Artigo em Inglês | MEDLINE | ID: mdl-27742908

RESUMO

LESSONS LEARNED: The safety and activity findings of abiraterone acetate plus prednisone treatment in black men with mCRPC were similar to results from previously conducted studies with largely white populations.Poor trial accrual continues to be a challenge in black men with mCRPC and further efforts are needed to address such underrepresentation. BACKGROUND: Self-identified black men have higher incidence and mortality from prostate cancer in the United States compared with white men but are dramatically underrepresented in clinical trials exploring novel therapies for metastatic castration-resistant prostate cancer (mCRPC). METHODS: Black men with mCRPC were treated with abiraterone acetate (AA), 1,000 mg daily, and prednisone (P), 5 mg twice daily. The primary objective was to determine antitumor activity (defined by a ≥30% decline in prostate-specific antigen [PSA] level) and to correlate germline polymorphisms in androgen metabolism genes with antitumor activity. Secondary objectives included determining safety, post-treatment changes in measurable disease, and time to disease progression. RESULTS: From April 2013 to March 2016, a total of 11 black men were enrolled and received AA plus P (AA+P); 7 of 10 evaluable patients were docetaxel naive. Post-treatment declines in PSA level of ≥30% were achieved in 90% of patients. The side effect profile was consistent with prior clinical trials exploring AA+P in mCRPC. Due to poor accrual, the study was closed prematurely with insufficient sample size for the planned pharmacogenetic analyses. CONCLUSION: In this small prospective study terminated for poor accrual, the safety and activity of AA+P in black men with mCRPC was similar to that reported in prior studies exploring AA in largely white populations. Further efforts are needed to address underrepresentation of black men in mCRPC trials.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias de Próstata Resistentes à Castração/tratamento farmacológico , Acetato de Abiraterona/administração & dosagem , Acetato de Abiraterona/efeitos adversos , Idoso , População Negra , Humanos , Masculino , Pessoa de Meia-Idade , Metástase Neoplásica , Prednisona/administração & dosagem , Prednisona/efeitos adversos , Estudos Prospectivos , Neoplasias de Próstata Resistentes à Castração/etnologia , Neoplasias de Próstata Resistentes à Castração/patologia
6.
Psychooncology ; 25(9): 1071-8, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-27317127

RESUMO

OBJECTIVES: Greater patient activation, defined as having the knowledge, skills, and confidence to manage one's health, is associated with cancer control behaviors. Cancer risk beliefs may be associated with patient activation, and delineating this relationship could inform cancer control interventions across diverse patient subgroups. This study examines associations between cancer risk beliefs, language preference, and patient activation within a multilingual urban primary care setting. DESIGN: Patients 18 years and older within a New York City public hospital serving a large proportion of non-native-born Americans were surveyed regarding their cancer risk beliefs and patient activation in Haitian Creole, Spanish, or English based on language preference during a health care visit. RESULTS: The sample (N = 460) included 150 Haitian Creole speakers, 159 Spanish speakers, and 151 English speakers and was primarily non-White (92%). Most participants (84%) had not been born in the United States. Cancer risk beliefs differed across language preference. Beliefs that cancer could be avoided by minimizing thoughts about cancer risk were significantly higher in Haitian Creole speakers than in others; reported negative emotion when thinking about cancer risk was higher in Spanish and English than in Haitian Creole speakers. These cancer risk beliefs were positively related to patient activation, even when controlling for language preference. CONCLUSION: Cancer risk beliefs differ across language preference and are related to patient activation, making them potentially important in cancer control. Consideration of language represents important demographic stratification for understanding the frequency and relevance of different beliefs about cancer and patient activation.


Assuntos
Conhecimentos, Atitudes e Prática em Saúde/etnologia , Idioma , Neoplasias/psicologia , Participação do Paciente , Atenção Primária à Saúde , Adulto , Negro ou Afro-Americano/psicologia , Feminino , Haiti/etnologia , Hispânico ou Latino/psicologia , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/etnologia , Cidade de Nova Iorque/epidemiologia , Inquéritos e Questionários , Estados Unidos
7.
Brain Behav Immun ; 26(7): 1047-56, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22687333

RESUMO

A dynamic systems model was used to generate parameters describing a phenotype of Hypothalamic-Pituitary-Adrenal (HPA) behavior in a sample of 36 patients with chronic fatigue syndrome (CFS) and/or fibromyalgia (FM) and 36 case-matched healthy controls. Altered neuroendocrine function, particularly in relation to somatic symptoms and poor sleep quality, may contribute to the pathophysiology of these disorders. Blood plasma was assayed for cortisol and ACTH every 10 min for 24h. The dynamic model was specified with an ordinary differential equation using three parameters: (1) ACTH-adrenal signaling, (2) inhibitory feedback, and (3) non-ACTH influences. The model was "personalized" by estimating an individualized set of parameters from each participant's data. Day and nighttime parameters were assessed separately. Two nocturnal parameters (ACTH-adrenal signaling and inhibitory feedback) significantly differentiated the two patient subgroups ("fatigue-predominant" patients with CFS only versus "pain-predominant" patients with FM and comorbid chronic fatigue) from controls (all p's<.05), whereas daytime parameters and diurnal/nocturnal slopes did not. The same nocturnal parameters were significantly associated with somatic symptoms among patients (p's<.05). There was a significantly different pattern of association between nocturnal non-ACTH influences and sleep quality among patients versus controls (p<.05). Although speculative, the finding that patient somatic symptoms decreased when more cortisol was produced per unit ACTH, is consistent with cortisol's anti-inflammatory and sleep-modulatory effects. Patients' HPA systems may compensate by promoting more rapid or sustained cortisol production. Mapping "behavioral phenotypes" of stress-arousal systems onto symptom clusters may help disentangle the pathophysiology of complex disorders with frequent comorbidity.


Assuntos
Doença/classificação , Fenótipo , Medicina de Precisão/métodos , Adolescente , Hormônio Adrenocorticotrópico/sangue , Adulto , Algoritmos , Ritmo Circadiano/fisiologia , Interpretação Estatística de Dados , Síndrome de Fadiga Crônica/fisiopatologia , Síndrome de Fadiga Crônica/psicologia , Feminino , Fibromialgia/fisiopatologia , Humanos , Hidrocortisona/sangue , Sistema Hipotálamo-Hipofisário/fisiopatologia , Masculino , Pessoa de Meia-Idade , Modelos Estatísticos , Sistema Hipófise-Suprarrenal/fisiopatologia , Adulto Jovem
8.
Brain Behav Immun ; 26(4): 573-9, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-22293459

RESUMO

Chronic psychological stress is a risk factor for multiple diseases of aging. Accelerated cellular aging as indexed by short telomere length has emerged as a potential common biological mechanism linking various forms of psychological stress and diseases of aging. Stress appraisals determine the degree and type of biological stress responses and altered stress appraisals may be a common psychological mechanism linking psychological stress and diseases of aging. However, no previous studies have examined the relationship between stress appraisals and telomere length. We exposed chronically stressed female caregivers and non-caregiving controls (N=50; M age=62.14±6.10) to a standardized acute laboratory stressor and measured their anticipatory and retrospective threat and challenge appraisals of the stressor. We hypothesized that threat and challenge appraisals would be associated with shorter and longer telomere length respectively, and that chronic caregiving stress would influence telomere length through altered stress appraisals. Higher anticipatory threat appraisals were associated with shorter age-adjusted telomere length (ß=-.32, p=.03), but challenge appraisals and retrospective threat appraisals showed no independent association with telomere length. Caregivers reported significantly higher anticipatory (ß=-.36, p=.006) and retrospective (ß=-.29, p=.03) threat appraisals than controls, but similar challenge appraisals. Although there was no significant main effect of caregiver status on telomere length, caregiving had a significant indirect effect on telomere length through anticipatory threat appraisals. Exaggerated anticipatory threat appraisals may be a common and modifiable psychological mechanism of psychological stress effects on cellular aging.


Assuntos
Cuidadores/psicologia , Senescência Celular/fisiologia , Estresse Psicológico/metabolismo , Homeostase do Telômero/fisiologia , Encurtamento do Telômero/fisiologia , Idoso , Estudos de Casos e Controles , Feminino , Humanos , Pessoa de Meia-Idade , Fatores de Risco , Inquéritos e Questionários
9.
J Clin Oncol ; 40(31): 3603-3612, 2022 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-35709430

RESUMO

PURPOSE: Food insecurity is prevalent among low-income immigrant and minority patients with cancer. To our knowledge, this randomized controlled trial is the first to prospectively examine the impact on cancer outcomes of food insecurity interventions, with the goal of informing evidence-based interventions to address food insecurity in patients with cancer. METHODS: A three-arm randomized controlled trial was conducted among food-insecure (18-item US Department of Agriculture Household Food Security Survey Module score ≥ 3) patients with cancer (N = 117) at four New York City safety net cancer clinics. Arms included a hospital cancer clinic-based food pantry (arm 1), food voucher plus pantry (arm 2), and home grocery delivery plus pantry (arm 3). Treatment completion (primary outcome) and full appointment attendance were assessed at 6 months. Food security status, depression symptoms (Patient Health Questionnaire-9), and quality-of-life scores (Functional Assessment of Cancer Therapy-General) were assessed at baseline and at 6 months. RESULTS: Voucher plus pantry had the highest treatment completion rate (94.6%), followed by grocery delivery plus pantry (82.5%) and pantry (77.5%; P = .046). Food security scores improved significantly in all arms, and Patient Health Questionnaire-9 and Functional Assessment of Cancer Therapy-General scores improved significantly in the pantry and delivery plus pantry arms. CONCLUSION: Our findings in this preliminary study suggest that voucher plus pantry was the most effective intervention at improving treatment completion, and it met our a priori criterion for a promising intervention (≥ 90%). All interventions demonstrated the potential to improve food security among medically underserved, food-insecure patients with cancer at risk of impaired nutrition status, reduced quality of life, and poorer survival. All patients with cancer should be screened for food insecurity, with evidence-based food insecurity interventions made available.


Assuntos
Assistência Alimentar , Neoplasias , Humanos , Abastecimento de Alimentos , Qualidade de Vida , Insegurança Alimentar , Neoplasias/terapia
10.
Case Rep Endocrinol ; 2022: 4044602, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35083088

RESUMO

An adrenal myelolipoma presenting with suspicious features may pose a diagnostic challenge to surgeons and endocrinologists. In this case report of an adult patient with undiagnosed congenital adrenal hyperplasia presenting with bilateral adrenal masses, we review his radiographic and clinical findings which were highly suspicious for adrenal malignancy. Features of adrenal myelolipoma that may resemble malignant lesions are reviewed. This case report highlights important features of adrenal myelolipoma that the surgeon and endocrinologist should be aware of. The importance of avoiding overtreating adrenal myelolipomas presenting as tumors of uncertain malignant potential is crucial.

11.
Psychosom Med ; 73(7): 604-11, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21873586

RESUMO

OBJECTIVE: Physically active individuals have lower rates of morbidity and mortality, and recent evidence indicates that physical activity may be particularly beneficial to those experiencing chronic stress. The tendency to ruminate increases and prolongs physiological stress responses, including hypothalamic-pituitary-adrenal (HPA) axis responses as indexed by cortisol reactivity to stressful experiences. We examined the association between ruminating in response to a laboratory stressor task and HPA axis reactivity and recovery and examined whether a physically active life-style moderates the associations between rumination and cortisol output trajectories. METHODS: Forty-six postmenopausal women underwent the Trier Social Stress Test, whereas salivary cortisol was repeatedly measured. Twenty-five minutes after the end of the stressor, participants reported level of rumination in response to the stress. RESULTS: Findings indicate that physical activity moderated the initial rate (B = -0.10, standard error = 0.04, p < .05) and curvature (B = -0.03, standard error = 0.01, p = .06) of the relationship between rumination and log-transformed cortisol trajectory. Among sedentary participants, those who responded to the stressor with higher levels of rumination had a more rapid initial increase in cortisol level (0.26 versus 0.21, p < .001), a later peak in cortisol reactivity (56 versus 39 minutes), and a delayed recovery from stress (curvature: -0.07 versus -0.08, p < .001) compared with those with lower levels of rumination. In active participants, cortisol trajectories were equivalent, regardless of the level of rumination. CONCLUSIONS: In sum, individuals who maintain a physically active life-style may be protected against the effects of rumination on HPA axis reactivity to and recovery from acute stress.


Assuntos
Hidrocortisona/análise , Atividade Motora/fisiologia , Estresse Psicológico/prevenção & controle , Idoso , Idoso de 80 Anos ou mais , Índice de Massa Corporal , Feminino , Humanos , Hidrocortisona/fisiologia , Pessoa de Meia-Idade , Testes Psicológicos , Saliva/química , Comportamento Sedentário , Estresse Psicológico/fisiopatologia , Pensamento/fisiologia
12.
Invest New Drugs ; 29(6): 1475-81, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-20574790

RESUMO

PURPOSE: The transcription factor nuclear factor-kB (NFkB) is implicated in gastric cancer carcinogenesis and survival, and its inhibition by proteosome inhibition is associated with preclinical gastric cancer anti-tumor activity. We examined the single agent efficacy of bortezomib, a selective proteasome inhibitor, in gastric adenocarcinoma. EXPERIMENTAL DESIGN: We performed a phase II trial of bortezomib in patients with advanced gastric adenocarcinoma. Bortezomib 1.3 mg/m(2) was administered on days 1, 4, 8, and 11 every 21 days. The primary endpoint was objective response rate(RR); the null hypothesis was RR <1% versus the alternative ≥15%. One response in the first stage(15 patients) was required before proceeding with an additional 18 patients. If at least 2 or more responses out of 33 were observed, further study with bortezomib was warranted. Correlative studies evaluated pre-treatment tumor expression of NFkB, IkB, p53, p21, and cyclin D1. RESULTS: We enrolled 16 patients (15 evaluable for response) from four institutions. No patients demonstrated an objective response(95% CI, 0-22%); one patient achieved stable disease. Fourteen out of 16 patients experienced ≥ grade 2 toxicity. The most common toxicity was fatigue in six patients (n = 4 grade 2, n = 2 grade 3). Seven patients experienced neuropathy (n = 5 grade 1, and 1 each grade 2 and 3). Seven (60%) had high cytoplasmic staining for NFkB. CONCLUSIONS: Single agent bortezomib is inactive in metastatic gastric adenocarcinoma and should not be pursued. Future study of proteasome inhibition in gastric adenocarcinoma should be considered in combination with targeted inhibition of other non-overlapping oncogenic pathways as a potential rational approach.


Assuntos
Adenocarcinoma/tratamento farmacológico , Antineoplásicos/uso terapêutico , Ácidos Borônicos/uso terapêutico , Pirazinas/uso terapêutico , Neoplasias Gástricas/tratamento farmacológico , Adenocarcinoma/patologia , Idoso , Antineoplásicos/efeitos adversos , Ácidos Borônicos/efeitos adversos , Bortezomib , Junção Esofagogástrica/patologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , NF-kappa B/metabolismo , Metástase Neoplásica , Inibidores de Proteases/efeitos adversos , Inibidores de Proteases/uso terapêutico , Pirazinas/efeitos adversos , Neoplasias Gástricas/patologia , Resultado do Tratamento
13.
J Psychosoc Oncol ; 29(4): 347-58, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21966720

RESUMO

The aim of this study was to pilot test in a minority cancer patient population a communication workshop to improve doctor-patient communication skills. Thirty-two patients participated. Eighteen evaluated a face-to-face workshop, while 14 completed surveys only. Participants in the workshop group completed the Patient Report of Communication Behavior (PRCB) before and after the workshop and a course evaluation. Participants did not differ on baseline PRCB scores. Posttest scores were significantly higher than pretest scores (p < 0.01). All participants agreed or strongly agreed that they would use the communication skills; 93% agreed or strongly agreed that the skills would improve their health care.


Assuntos
Competência Clínica , Grupos Minoritários/psicologia , Neoplasias/psicologia , Educação de Pacientes como Assunto/métodos , Relações Médico-Paciente , Adulto , Idoso , Competência Clínica/normas , Comunicação , Educação/normas , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Educação de Pacientes como Assunto/normas , Projetos Piloto , Avaliação de Programas e Projetos de Saúde
14.
Psychol Sci ; 20(10): 1237-44, 2009 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-19754527

RESUMO

This study experimentally tested whether a stressor characterized by social-evaluative threat (SET), a context in which the self can be judged negatively by others, would elicit increases in proinflammatory cytokine activity and alter the regulation of this response. This hypothesis was derived in part from research on immunological responses to social threat in nonhuman animals. Healthy female participants were assigned to perform a speech and a math task in the presence or absence of an evaluative audience (SET or non-SET, respectively). As hypothesized, stimulated production of the proinflammatory cytokine tumor necrosis factor-alpha (TNF-alpha) increased from baseline to poststressor in the SET condition, but was unchanged in the non-SET condition. Further, the increases in TNF-alpha production correlated with participants' cognitive appraisals of being evaluated. Additionally, the ability of glucocorticoids to shut down the inflammatory response was decreased in the SET condition. These findings underscore the importance of social evaluation as a threat capable of eliciting proinflammatory cytokine activity and altering its regulation.


Assuntos
Autoimagem , Comportamento Social , Estresse Psicológico/sangue , Fator de Necrose Tumoral alfa/sangue , Adulto , Análise de Variância , Pressão Sanguínea , Citocinas/sangue , Emoções , Feminino , Glucocorticoides/administração & dosagem , Humanos , Matemática , Fala , Inquéritos e Questionários , Análise e Desempenho de Tarefas , Adulto Jovem
15.
Brain Behav Immun ; 23(1): 1-9, 2009 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-18809488

RESUMO

There exists a bidirectional network of interactions between the central nervous system, the endocrine system and the immune system. The existence of these pathways allows stressful life experience to impact the immune system with important implications for health. One powerful elicitor of changes in the autonomic, endocrine and immune systems is threat to social status. This review describes the development of a human model of social status threat that specifies a set of contextual, psychological and biological pathways that may underlie the health consequences of threats to social status and regard. The role of cognitive processes in shaping the physiological response to the social world will be emphasized.


Assuntos
Adaptação Psicológica/fisiologia , Neuroimunomodulação/fisiologia , Meio Social , Estresse Psicológico/fisiopatologia , Humanos , Modelos Psicológicos , Neuroimunomodulação/imunologia , Psiconeuroimunologia , Estresse Psicológico/imunologia , Estresse Psicológico/psicologia
16.
Clin Breast Cancer ; 19(1): 47-57, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30420181

RESUMO

INTRODUCTION: Trebananib, a peptide-Fc fusion protein, blocks angiogenesis by inhibiting binding of angiopoietin-1/2 to the receptor tyrosine kinase Tie2. Trebananib plus trastuzumab and paclitaxel was evaluated in human epidermal growth factor receptor 2-positive breast cancer in an open-label phase 1b clinical study. PATIENTS AND METHODS: Women with human epidermal growth factor receptor 2-positive breast cancer received weekly paclitaxel (80 mg/m2), trastuzumab (8 mg/m2 then 6 mg/kg every 3 weeks), and intravenous trebananib (10 mg/kg or 30 mg/kg weekly) beginning week 2. The primary end point was the incidence of dose-limiting toxicities. Secondary end points included incidence of adverse events (AEs), pharmacokinetics, and tumor response (objective response and duration of response). RESULTS: Forty women were enrolled; 2 experienced dose-limiting toxicities (grade 3 ocular transient ischemic attack [10 mg/kg cohort] and grade 3 elevation in γ-glutamyl transferase [30 mg/kg cohort]). The most common treatment-emergent AEs were peripheral edema (n = 28), diarrhea (n = 27), alopecia (n = 26), fatigue (n = 24), and nausea (n = 24). Maximum observed concentration and area under the concentration-time curve increased proportionally with the trebananib dose. Objective response was confirmed in 31 patients. In the 10 mg/kg cohort, 16 patients (80%) experienced partial response, and none experienced complete response. In the 30 mg/kg cohort, 12 patients (71%) experienced partial response and 3 (18%) experienced complete response. Median (95% confidence interval) duration of response in the 10 and 30 mg/kg cohorts was 12.6 (4.3-20.2) and 16.6 (8.2-not estimable) months, respectively. CONCLUSION: This phase 1b study showed that trebananib was tolerated with manageable AEs at a dose up to 30 mg/kg weekly. Trebananib demonstrated anticancer activity, as indicated by objective response and duration of response.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Recidiva Local de Neoplasia/tratamento farmacológico , Receptor ErbB-2/metabolismo , Adulto , Idoso , Neoplasias da Mama/metabolismo , Neoplasias da Mama/patologia , Estudos de Coortes , Feminino , Seguimentos , Humanos , Dose Máxima Tolerável , Pessoa de Meia-Idade , Metástase Neoplásica , Recidiva Local de Neoplasia/metabolismo , Recidiva Local de Neoplasia/patologia , Paclitaxel/administração & dosagem , Prognóstico , Proteínas Recombinantes de Fusão/administração & dosagem , Trastuzumab/administração & dosagem
17.
Clin Cancer Res ; 25(13): 3784-3792, 2019 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-30988080

RESUMO

PURPOSE: Lapatinib and capecitabine cross the blood-tumor barrier in breast cancer brain metastasis but have modest clinical efficacy. Administration of high-dose tyrosine kinase inhibitor has been evaluated in brain metastases and primary brain tumors as a strategy to improve drug exposure in the central nervous system (CNS). We derived a rational drug scheduling of intermittent high-dose lapatinib alternating with capecitabine based on our preclinical data and Norton-Simon mathematical modeling. We tested this intermittent, sequential drug schedule in patients with breast cancer with CNS metastasis. PATIENTS AND METHODS: We conducted a phase I trial using an accelerated dose escalation design in patients with HER2-positive (HER2+) breast cancer with CNS metastasis. Lapatinib was given on day 1-3 and day 15-17 with capecitabine on day 8-14 and day 22-28 on an every 28-day cycle. Lapatinib dose was escalated, and capecitabine given as a flat dose at 1,500 mg BID. Toxicity and efficacy were evaluated. RESULTS: Eleven patients were enrolled: brain only (4 patients, 36%), leptomeningeal (5 patients, 45%), and intramedullary spinal cord (2 patients, 18%). Grade 3 nausea and vomiting were dose-limiting toxicities. The MTD of lapatinib was 1,500 mg BID. Three patients remained on therapy for greater than 6 months. CONCLUSIONS: High-dose lapatinib is tolerable when given intermittently and sequentially with capecitabine. Antitumor activity was noted in both CNS and non-CNS sites of disease. This novel administration regimen is feasible and efficacious in patients with HER2+ breast cancer with CNS metastasis and warrants further investigation.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias da Mama/genética , Neoplasias da Mama/patologia , Neoplasias do Sistema Nervoso Central/tratamento farmacológico , Neoplasias do Sistema Nervoso Central/secundário , Receptor ErbB-2/antagonistas & inibidores , Receptor ErbB-2/genética , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Capecitabina/administração & dosagem , Neoplasias do Sistema Nervoso Central/mortalidade , Esquema de Medicação , Humanos , Lapatinib/administração & dosagem , Pessoa de Meia-Idade , Células Neoplásicas Circulantes , Resultado do Tratamento
18.
J Immunother Cancer ; 7(1): 30, 2019 02 04.
Artigo em Inglês | MEDLINE | ID: mdl-30717797

RESUMO

BACKGROUND: We evaluated the antitumor activity and safety of avelumab, a human anti-PD-L1 IgG1 antibody, as first-line switch-maintenance (1 L-mn) or second-line (2 L) treatment in patients with advanced gastric/gastroesophageal cancer (GC/GEJC) previously treated with chemotherapy. METHODS: In a phase 1b expansion cohort, patients without (1 L-mn) or with (2 L) disease progression following first-line chemotherapy for advanced GC/GEJC received avelumab 10 mg/kg intravenously every 2 weeks. Endpoints included best overall response, progression-free survival (PFS), overall survival (OS), and safety. RESULTS: Overall, 150 patients were enrolled (1 L-mn, n = 90; 2 L, n = 60) and median follow-up in the 1 L-mn and 2 L subgroups was 36.0 and 33.7 months, respectively. The confirmed objective response rate was 6.7% in both subgroups (95% CI, 2.5-13.9% and 1.8-16.2%, respectively), including complete responses in 2.2% of the 1 L-mn subgroup (n = 2). In the 1 L-mn and 2 L subgroups, median duration of response was 21.4 months (95% CI, 4.0-not estimable) and 3.5 months (95% CI, 2.8-8.3) and disease control rates were 56.7 and 28.3%, respectively. Median PFS in the 1 L-mn and 2 L subgroups was 2.8 months (95% CI, 2.3-4.1) and 1.4 months (95% CI, 1.3-1.5), with 6-month PFS rates of 23.0% (95% CI, 14.7-32.4%) and 7.9% (95% CI, 2.6-17.2%), and median OS was 11.1 months (95% CI, 8.9-13.7) and 6.6 months (95% CI, 5.4-9.4), respectively. In the 1 L-mn subgroup, median OS measured from start of 1 L chemotherapy was 18.7 months (95% CI, 15.4-20.6). Across both subgroups, 20.7% had an infusion-related reaction of any grade. Other common treatment-related adverse events (TRAEs) of any grade included fatigue (10.0%) and nausea (6.7%). Treatment-related serious adverse events occurred in 4.0% of patients. Overall, 8.7% had a grade ≥3 TRAE, including 1 treatment-related death. CONCLUSION: Avelumab showed clinical activity and an acceptable safety profile in patients with GC/GEJC. TRIAL REGISTRATION: ClinicalTrials.gov NCT01772004 ; registered 21 January 2013.


Assuntos
Anticorpos Monoclonais/uso terapêutico , Antineoplásicos Imunológicos/uso terapêutico , Antígeno B7-H1/antagonistas & inibidores , Neoplasias Esofágicas/tratamento farmacológico , Imunoglobulina G/uso terapêutico , Neoplasias Gástricas/tratamento farmacológico , Idoso , Anticorpos Monoclonais/efeitos adversos , Anticorpos Monoclonais Humanizados , Antineoplásicos Imunológicos/efeitos adversos , Neoplasias Esofágicas/mortalidade , Neoplasias Esofágicas/patologia , Junção Esofagogástrica/patologia , Feminino , Humanos , Imunoglobulina G/efeitos adversos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Neoplasias Gástricas/mortalidade , Neoplasias Gástricas/patologia , Análise de Sobrevida
19.
J Oncol Pract ; 14(3): e158-e167, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29298115

RESUMO

PURPOSE: To implement and test a Web-based tracking and feedback (T&F) tool to close referral loops and reduce adjuvant breast cancer treatment underuse in safety-net hospitals (SNHs). PATIENT AND METHODS: We randomly assigned 10 SNHs, identified patients with new stage 1 to stage 3 breast cancer, assessed their connection with the oncologist, and relayed this information to surgeons for follow-up. We interviewed key informants about the tool's usefulness. We conducted intention-to-treat and pre- and poststudy analyses to assess the T&F tool and implementation effectiveness, respectively. RESULTS: Between the study start and intervention implementation, several hospitals reorganized care delivery and 49% of patients scheduled to undergo breast cancer surgery were ineligible because they already were in contact with an oncologist. One high-volume hospital closed. Despite randomization of hospitals, intervention (INT) hospitals had fewer white patients (5% v 16%; P = .0005), and more underuse (28% v 15%; P = .002) compared with usual care (UC) hospitals. Over time, INT hospitals with poorer follow-up significantly reduced underuse compared with UC hospitals (INT hospitals, from 33% to 9%, P = .001 v UC hospitals, from 15% to 11%, P = .5). There was no difference in underuse (9% at INT hospitals, 11% at UC hospitals; P = .8). Hospitals with better follow-up (odds ratio, 0.85; 95% CI, 0.73 to 0.98) had less underuse. In settings with poor follow-up and tracking approaches, key informants found the tool useful. The rapidly changing delivery landscape posed significant challenges to this implementation research. CONCLUSION: A T&F tool did not significantly reduce adjuvant underuse but may help reduce underuse in SNHs with poor follow-up capabilities. Inability to discern T&F effectiveness is likely due to encountered challenges that inform lessons for future implementation research.


Assuntos
Neoplasias da Mama/epidemiologia , Hospitais , Melhoria de Qualidade , Ensaios Clínicos Controlados Aleatórios como Assunto , Provedores de Redes de Segurança , Neoplasias da Mama/diagnóstico , Neoplasias da Mama/terapia , Feminino , Humanos , Análise de Intenção de Tratamento , Aplicações da Informática Médica , Cidade de Nova Iorque , Provedores de Redes de Segurança/métodos , Provedores de Redes de Segurança/normas , Resultado do Tratamento
20.
Psychosom Med ; 69(3): 225-34, 2007 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-17401058

RESUMO

OBJECTIVE: To examine the effect of unemployment on natural killer cell cytotoxicity (NKCC) and, in a subsample of persons who become re-employed, to determine if, after termination of the stressor, immune values recover to levels similar to matched controls. METHODS: One hundred unemployed and 100 matched employed healthy men and women, aged 29 to 45 years, were followed for 4 months with monthly blood samples taken to measure NKCC, the ability of NK cells to kill target cells. Twenty-five participants obtained employment before the end of the study, leaving 75 unemployed (and 75 employed) participants in the main sample. For unemployed participants who obtained employment before the end of the study, subsample analyses compared NKCC levels before and after obtaining a new job. RESULTS: The persistently unemployed sample had significantly lower NKCC levels for all three effector:target ratios (100:1, p = .0004; 50:1, p = .002; and 25:1, p = .02) when compared with the matched employed sample. There were no significant gender effects. In the subsample analyses, NKCC was significantly higher after the participants became employed, compared with their unemployed period, with substantial "recovery" of immune function (44%-72%) compared with values from the steadily employed group. CONCLUSIONS: Chronic stress is associated with persistent NKCC impairment. When the chronic stressor is terminated, however, the immune cell functional capacity quickly begins to recover. We believe this is the first study in humans to document immune function recovery after the definable end of a chronic stressor.


Assuntos
Citotoxicidade Imunológica , Emprego , Síndromes de Imunodeficiência/etiologia , Células Matadoras Naturais/imunologia , Estresse Psicológico/imunologia , Desemprego , Adulto , Consumo de Bebidas Alcoólicas/epidemiologia , Estudos de Casos e Controles , Doença Crônica , Testes Imunológicos de Citotoxicidade , Economia , Escolaridade , Emprego/psicologia , Etnicidade/estatística & dados numéricos , Exercício Físico , Feminino , Febre/epidemiologia , Seguimentos , Humanos , Síndromes de Imunodeficiência/imunologia , Síndromes de Imunodeficiência/psicologia , Renda/estatística & dados numéricos , Infecções/epidemiologia , Masculino , Pessoa de Meia-Idade , Preparações Farmacêuticas , São Francisco , Privação do Sono/epidemiologia , Fumar/epidemiologia , Estresse Psicológico/etiologia , Inquéritos e Questionários , Desemprego/psicologia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA