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1.
BMC Cancer ; 24(1): 500, 2024 Apr 19.
Artículo en Inglés | MEDLINE | ID: mdl-38641809

RESUMEN

BACKGROUND: Our aim was to develop a validated Patient Reported Experience Measure (PREM) to capture patient and carer experience during participation in experimental cancer medicine trials (ECM): called PREM-ECM. METHODS: Mixed method design, consisting of four stages. Questionnaire items were produced for both patients and carers using interviews, focus groups, and cognitive interviews with patients and carers separately. For both patient and carer PREMs, a cross-sectional questionnaire study was conducted to identify final items for inclusion using hierarchical item reduction and Rasch analysis. Questionnaire validity and reliability were assessed, including administration feasibility. RESULTS: Initial interview participants suggested the need for three PREMs, two specific to patients: (i) a 'prior' questionnaire that captured experiences of trial introduction, screening, consenting, and early trial experience (< 6 weeks post consent); and (ii) 'on-trial' that captured experiences of ongoing consent and trial participation; and (iii) a PREM specific for carers. The draft 25-item 'prior' questionnaire was completed by 162 patients and 162 patients completed the draft 35-item 'on-trial' questionnaire. Hierarchical and Rasch analysis produced a 14-item 'prior' list and a 15-item list for 'on-trial'. Both patient PREM's demonstrated a good fit to the Rasch model following Bonferroni correction (X2p = 0.008). The carer 34-draft item questionnaire was completed by 102 participants. Hierarchical and Rasch analysis produced a 13-item list for PREM-ECM-Carer, with good fit to the Rasch model ( X2p = 0.62). The pilot testing demonstrated the feasibility of all the PREMs in capturing patient and caregiver experiences in routine clinical settings. CONCLUSIONS: The three PREM-ECM questionnaires will be the first validated experience measures for ECM trial patients and their carers. These questionnaires may be used to assess patients' and their carers' experiences of ECM and enable robust comparisons across cancer trial units highlighting areas for service improvement.


Asunto(s)
Cuidadores , Neoplasias , Humanos , Cuidadores/psicología , Reproducibilidad de los Resultados , Estudios Transversales , Encuestas y Cuestionarios , Neoplasias/tratamiento farmacológico , Medición de Resultados Informados por el Paciente
3.
Syst Rev ; 12(1): 183, 2023 09 30.
Artículo en Inglés | MEDLINE | ID: mdl-37777816

RESUMEN

INTRODUCTION: Adoptive cell therapy (ACT) is a rapidly evolving field. Patient-reported outcomes (PROs) allow patients to report the impact of treatment on their quality of life during and after treatment. The systematic review aims to characterise the breadth of PROs utilised in ACT cancer care and provide guidance for the use of PROs in this patient population in the future. METHODS: A systematic search was conducted (MEDLINE, PsycINFO, Embase and CINAHL) in August 2021 by two reviewers. Search terms covered the following: "adoptive cell therapy", "patient-reported outcomes" and "cancer". Studies were included if they used a PRO measure to report the impact of ACT. The methodological quality of PROs was assessed. Forward and backward reference searching was conducted of any relevant papers. A quality grading scale was applied based on Cochrane and Revenson criteria for classification of high-quality studies. Key data from the studies and the included PROs was extracted by two researchers and tabulated. RESULTS: One-hundred nine papers were identified; 11 papers were included. The majority of studies were single-arm trials or observational studies. Twenty-two different PROs were identified; none was ACT specific. The PROMIS-29 and EQ-5D were most commonly used. Few studies collected PRO data in the first 1-2 weeks. Four studies followed patients up for over a year, and a further four studies followed patients for approximately 3 months. DISCUSSION: None of the PROs identified have been designed specifically for ACT. Appropriateness of existing instruments should be considered. It should be considered whether it is appropriate to collect data more frequently in the acute stage and then less frequently during follow-up. It should be considered if one tool is suitable at all time points or if the tool should be adapted depending on time since treatment. More research is needed to identify the exact timings of PRO assessments, and qualitative work with patients is needed to determine the most important issues for them throughout the treatment and follow-up.


Asunto(s)
Neoplasias , Calidad de Vida , Humanos , Inmunoterapia Adoptiva , Neoplasias/terapia , Medición de Resultados Informados por el Paciente
4.
Cancer Chemother Pharmacol ; 92(4): 325-328, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37452859

RESUMEN

BACKGROUND: Dubin-Johnson syndrome is a rare benign autosomal recessive condition that causes an isolated increase of conjugated bilirubin in the serum. Impaired biliary excretion is due to mutation in the multiple drug-resistance protein 2 gene (MRP2). CASE PRESENTATION: We describe the case of a 4-year-old girl being treated for acute lymphoblastic leukaemia who had a history of conjugated hyperbilirubinaemia and persistently elevated bilirubin levels on initiation of chemotherapy. During treatment for leukaemia, she was diagnosed with Dubin-Johnson syndrome for the underlying condition. Following administration of vincristine at the recommended dose of 1.5 mg/m2, an abnormally high vincristine exposure was observed (AUC > 200 µg/L*h), approximately 3 times higher than previously reported exposures in a comparable clinical setting. Vincristine dose reductions were applied on subsequent cycles of treatment and resulted in markedly reduced drug exposures, within the normal target range. CONCLUSION: This case provided a rare opportunity to assess the impact of MRP2 mutations associated with Dubin-Johnson syndrome on the pharmacokinetics of vincristine and strongly indicates that a marked dose reduction should be recommended. Clinicians should be made aware of the potential for altered drug disposition for agents such as vincristine in patients with this rare genetic condition.


Asunto(s)
Ictericia Idiopática Crónica , Leucemia-Linfoma Linfoblástico de Células Precursoras , Femenino , Humanos , Niño , Preescolar , Ictericia Idiopática Crónica/tratamiento farmacológico , Ictericia Idiopática Crónica/genética , Ictericia Idiopática Crónica/complicaciones , Vincristina , Proteínas Asociadas a Resistencia a Múltiples Medicamentos/genética , Proteína 2 Asociada a Resistencia a Múltiples Medicamentos , Bilirrubina/metabolismo , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamiento farmacológico , Leucemia-Linfoma Linfoblástico de Células Precursoras/genética
5.
BMJ Open ; 11(10): e047813, 2021 10 05.
Artículo en Inglés | MEDLINE | ID: mdl-34610932

RESUMEN

OBJECTIVES: The study aimed to explore patients' experiences of experimental cancer medicine (ECM) clinical trials. DESIGN: The study's design was qualitative. Two focus groups with patients were undertaken followed by semistructured interviews, to explore patients' experiences of ECM clinical trials. Interviews and focus groups were audiorecorded and transcribed verbatim. Data were analysed using thematic analysis. SETTING: A regional cancer centre (tertiary care) in North-West England. PARTICIPANTS: Twelve patients (aged 52-79) participated in one of the two focus groups and 22 patients (aged 42-83) participated in interviews. PRIMARY OUTCOME MEASURE: Patients' experiences of an ECM trial. RESULTS: Four main themes were identified from the analysis: decision making, information needs, the experience of trial participation and impact of trial participation. Subthemes are presented in the manuscript. CONCLUSION: To make fully informed decisions about trial participation, patients required the simplification of trial information and wanted more information about side effects, their response to trial treatment and the overall trial progress throughout the trial. Patients highlighted the need for improvement for the support provided to their family and friends.


Asunto(s)
Investigación Biomédica , Neoplasias , Grupos Focales , Humanos , Oncología Médica , Neoplasias/terapia , Investigación Cualitativa
6.
Ther Adv Vaccines Immunother ; 8: 2515135520944355, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33015538

RESUMEN

Advanced Therapy Medicinal Products (ATMPs) comprise novel cell, tissue and gene therapies and offer the potential of durable remissions for diseases where there is a high unmet clinical need. Once considered a niche area of academic research, ATMPs now represent one of the fastest-growing areas of clinical development. The field has seen a rapid expansion of academic and commercial entities successfully translating ATMP research into the clinic. This is reflected in projection that the global gene and cell therapy market will be worth US $11.96 billion by 2025. However, these treatments are complex to deliver and frequently do not fit naturally into established healthcare systems. In the United Kingdom (UK) there has been a long-standing interest in ATMP research and, in order to meet the ambition to act as an international hub of activity for delivery of ATMPs, a collaborative network of Advanced Therapy Treatment Centres (ATTCs) has been established. This review explores the challenges of delivery in the clinical setting, focussing on one form of ATMP, Adoptive Cell Therapy (ACT). We describe the strategy being implemented in the UK to optimise the roll-out of these exciting new therapies.

7.
BMJ Support Palliat Care ; 10(2): 234-241, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-31784463

RESUMEN

OBJECTIVE: In recent years, a simultaneous care model for advanced cancer patients has been recommended meaning that palliative care services are offered throughout their cancer journey. To inform the successful adoption of this model in a phase I trial context, the study aimed to explore patients' care needs and their perceptions of specialist palliative care. METHODS: Semi-structured interviews were conducted with 10 advanced cancer patients referred to the Experimental Cancer Medicine team. Interviews were transcribed verbatim and thematically analysed with a framework approach to data organisation. RESULTS: Despite reporting considerable physical and psychological impacts from cancer and cancer treatment, participants did not recognise a need for specialist palliative care support. Understanding of the role of specialist palliative care was largely limited to end of life care. There was perceived conflict between considering a phase I trial and receiving specialist palliative care. Participants felt specialist palliative care should be introduced earlier and educational resources developed to increase patient acceptability of palliative care services. SIGNIFICANCE OF RESULTS: Patients with advanced cancer referred for phase I trials are likely to benefit from specialist palliative care. However, this study suggests patients may not recognise a need for support nor accept this support due to misperceptions about the role of palliative care. Developing a specific educational resource about specialist palliative care for this population would help overcome barriers to engaging with a simultaneous care model.


Asunto(s)
Ensayos Clínicos Fase I como Asunto/psicología , Neoplasias/psicología , Cuidados Paliativos/psicología , Aceptación de la Atención de Salud/psicología , Sujetos de Investigación/psicología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neoplasias/terapia , Investigación Cualitativa , Cuidado Terminal/psicología
8.
Clin J Oncol Nurs ; 23(4): 439-442, 2019 08 01.
Artículo en Inglés | MEDLINE | ID: mdl-31322625

RESUMEN

The benefits of international immersion programs are multifactorial. These programs not only allow the sharing of nursing best practices and models of care and education, but they also increase collaborative opportunities to develop shared research ideas and innovation. This article presents the practicalities and considerations when undertaking an immersion program, with exemplars from the authors' experience and the unique and invaluable outcomes that were achieved.


Asunto(s)
Bachillerato en Enfermería/métodos , Cooperación Internacional , Enfermería Oncológica/educación , Desarrollo de Personal , Humanos
9.
J Clin Nurs ; 26(23-24): 5160-5168, 2017 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-28881074

RESUMEN

AIMS AND OBJECTIVES: To review hospital passports currently in use for people with intellectual disabilities in the UK and to make recommendations for practice. BACKGROUND: Hospital passports have been introduced internationally to address communication barriers that may limit access to appropriate health care for people with intellectual disabilities. They are viewed as promoting patient safety and person-centred care but their format may vary, they are not always used appropriately, and hence, their effectiveness may be limited. DESIGN: Qualitative content analysis. METHODS: Sixty hospital passports in use in the UK were reviewed against a coding frame by two members of the research team. Areas of interest included key patient and primary care information, support network details, consent and capacity, support required in relation to activities of daily living, length of the document and completion details. Results were entered into Excel. RESULTS: Considerable variation was found between documents in terms of terminology, length and format. Most included information regarding communication and support needs although some omitted important information such as allergies, risk assessment and need for reasonable adjustments. CONCLUSIONS: Considerable variation exists between current hospital passports, which may limit their effectiveness: key information required may not be included and/or it may not be easy to locate. Greater standardisation of documents is required, but this process should include input from all key stakeholders. RELEVANCE TO CLINICAL PRACTICE: Internationally nurses provide care for people with intellectual disabilities and others with communication difficulties. Hospital passports are one way of enhancing safety and person-centred care, need to be accessed and used as a basis for care planning. However, variation in format may limit this effectiveness and nurses should work with others to develop a more standardised approach, which better meets the needs of all stakeholders.


Asunto(s)
Barreras de Comunicación , Hospitales/normas , Discapacidad Intelectual/enfermería , Seguridad del Paciente/normas , Atención Dirigida al Paciente/normas , Actividades Cotidianas , Humanos , Atención Dirigida al Paciente/organización & administración , Investigación Cualitativa , Reino Unido
10.
Resuscitation ; 105: 130-7, 2016 08.
Artículo en Inglés | MEDLINE | ID: mdl-27283061

RESUMEN

BACKGROUND: The use of cardiac arrest educational debriefing has been associated with improvements in cardiopulmonary resuscitation (CPR) quality and patient outcome. The practical challenges associated with delivering some debriefing approaches may not be generalisable to the UK health setting. The aim of this study was to evaluate the deliverability and effectiveness of three cardiac arrest debriefing approaches that were tailored to UK working practice. METHODS: We undertook a before/after study at three hospital sites. During the post-intervention period of the study, three cardiac arrest educational debriefing models were implemented at study hospitals (one model per hospital). To evaluate the effectiveness of the interventions, CPR quality and patient outcome data were collected from consecutive adult cardiac arrest events attended by the hospital cardiac arrest team. The primary outcome was chest compression depth. RESULTS: Between November 2011 and July 2014, 1198 cardiac arrest events were eligible for study inclusion (782 pre-intervention; 416 post-intervention). The quality of CPR was high at baseline. During the post-intervention period, cardiac arrest debriefing interventions were delivered to 191 clinicians on 344 occasions. Debriefing interventions were deliverable in practice, but were not associated with a clinically important improvement in CPR quality. The interventions had no effect on patient outcome. CONCLUSION: The delivery of these cardiac arrest educational debriefing strategies was feasible, but did not have a large effect on CPR quality. This may be attributable to the high-quality of CPR being delivered in study hospitals at baseline. TRIAL REGISTRATION: ISRCTN39758339.


Asunto(s)
Reanimación Cardiopulmonar/métodos , Paro Cardíaco/terapia , Modelos Educacionales , Mejoramiento de la Calidad , Anciano , Anciano de 80 o más Años , Reanimación Cardiopulmonar/educación , Reanimación Cardiopulmonar/mortalidad , Estudios Controlados Antes y Después , Cardioversión Eléctrica/estadística & datos numéricos , Femenino , Paro Cardíaco/mortalidad , Masaje Cardíaco/métodos , Masaje Cardíaco/estadística & datos numéricos , Hospitales/estadística & datos numéricos , Humanos , Masculino , Persona de Mediana Edad , Estadísticas no Paramétricas
11.
Cochrane Database Syst Rev ; 4: CD006247, 2016 Apr 24.
Artículo en Inglés | MEDLINE | ID: mdl-27107610

RESUMEN

BACKGROUND: Neutropenia is a potentially serious side effect of chemotherapy and a major risk factor for infection, which can be life-threatening. It has been hypothesised that a low bacterial diet (LBD) can prevent infection and (infection-related) mortality in cancer patients receiving chemotherapy that causes episodes of neutropenia, but much remains unclear. This review is an update of a previously published Cochrane review. OBJECTIVES: The primary objective of this review was to determine the efficacy of an LBD versus a control diet in preventing infection and in decreasing (infection-related) mortality in adult and paediatric cancer patients receiving chemotherapy that causes episodes of neutropenia. Secondary objectives were to assess time to first febrile episode, need for empirical antibiotic therapy, diet acceptability and quality of life. SEARCH METHODS: We searched the following electronic databases: the Cochrane Central Register of Controlled Trials (CENTRAL) (2015, Issue 4), the Database of Abstracts of Reviews of Effects (DARE) (2015, Issue 4), PubMed (from 1946 to 4 May 2015), EMBASE (from 1980 to 4 May 2015) and the Cumulative Index to Nursing and Allied Health Literature (CINAHL) (from 1981 to 4 May 2015).In addition, we searched the reference lists of relevant articles and conference proceedings of American Society of Hematology (ASH; from 2000 to 2015), European Bone Marrow Transplantation (EBMT; from 2000 to 2015), Oncology Nurses Society (ONS; from 2000 to 2015), International Society for Paediatric Oncology (SIOP; from 2000 to 2014), Multinational Association of Supportive Care in Cancer (MASCC; from 2000 to 2015), American Society of Clinical Oncology (ASCO; from 2000 to 2015), Interscience Conference of Antimicrobial Agents and Chemotherapy (ICAAC; from 2000 to 2015), European Society for Clinical Nutrition and Metabolism (ESPEN; from 2000 to 2015), American Society for Parenteral and Enteral Nutrition (ASPEN; from 2000 to 2015) and European Hematology Association (EHA; from 2000 to 2015). In May 2015, we scanned the National Institutes of Health Register via clinicaltrials.gov and the International Standard Randomised Controlled Trial Number (ISRCTN) Register (www.controlled-trials.com). SELECTION CRITERIA: Randomised controlled trials (RCTs) comparing use of an LBD versus a control diet with regard to infection rate, (infection-related) mortality, time to first febrile episode, need for empirical antibiotic therapy, diet acceptability and quality of life in adult and paediatric cancer patients receiving chemotherapy causing episodes of neutropenia. DATA COLLECTION AND ANALYSIS: Two review authors independently performed study selection, 'Risk of bias' assessment and data extraction. We performed analyses according to the guidelines of the Cochrane Handbook for Systematic Reviews of Interventions. MAIN RESULTS: In the original version of this review, we identified three RCTs that assessed different intervention and control diets in 192 participants (97 randomised to intervention diet; 95 to control diet) with different types of malignancies. For the update, we identified no eligible new studies. Co-interventions (e.g. protective environment, antimicrobial prophylaxis, central venous catheter care, oral care, hygiene practices, colony-stimulating factors) and outcome definitions also differed between studies. In all included studies, it was standard policy to give empirical antibiotics (and sometimes also antimycotics) to (some of) the participants diagnosed with an infection. Two studies included adults and one study included children. In all studies, only a scant description of treatment regimens was provided. All studies had methodological limitations. Pooling of results of included studies was not possible. In two individual studies, no statistically significant differences in infection rate were identified between intervention and control diets; another study showed no significant differences between treatment groups in the number of chemotherapy cycles with an infection. None of the studies mentioned infection-related mortality, but in one study, no significant difference in overall survival was observed between treatment groups. Time from onset of neutropenia to fever, duration of empirical antibiotics and antimycotics, diet acceptability (i.e. following the diet easily and following the diet throughout all chemotherapy cycles) and quality of life were all evaluated by only one study; for all outcomes, no statistically significant differences between treatment arms were identified. AUTHORS' CONCLUSIONS: At the moment, no evidence from individual RCTs in children and adults with different malignancies underscores use of an LBD for prevention of infection and related outcomes. All studies differed with regard to co-interventions, outcome definitions and intervention and control diets. As pooling of results was not possible, and as all studies had serious methodological limitations, we could reach no definitive conclusions. It should be noted that 'no evidence of effect', as identified in this review, is not the same as 'evidence of no effect'. On the basis of currently available evidence, we are not able to provide recommendations for clinical practice. Additional high-quality research is needed.


Asunto(s)
Antineoplásicos/efectos adversos , Infecciones Bacterianas/prevención & control , Micosis/prevención & control , Neoplasias/tratamiento farmacológico , Neutropenia/dietoterapia , Antibacterianos/uso terapéutico , Antifúngicos/uso terapéutico , Fiebre/dietoterapia , Humanos , Neutropenia/inducido químicamente , Ensayos Clínicos Controlados Aleatorios como Asunto
12.
Acta Orthop ; 86(5): 523-33, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25828191

RESUMEN

BACKGROUND AND PURPOSE: Outcome measurement has been shown to improve performance in several fields of healthcare. This understanding has driven a growing interest in value-based healthcare, where value is defined as outcomes achieved per money spent. While low back pain (LBP) constitutes an enormous burden of disease, no universal set of metrics has yet been accepted to measure and compare outcomes. Here, we aim to define such a set. PATIENTS AND METHODS: An international group of 22 specialists in several disciplines of spine care was assembled to review literature and select LBP outcome metrics through a 6-round modified Delphi process. The scope of the outcome set was degenerative lumbar conditions. RESULTS: Patient-reported metrics include numerical pain scales, lumbar-related function using the Oswestry disability index, health-related quality of life using the EQ-5D-3L questionnaire, and questions assessing work status and analgesic use. Specific common and serious complications are included. Recommended follow-up intervals include 6, 12, and 24 months after initiating treatment, with optional follow-up at 3 months and 5 years. Metrics for risk stratification are selected based on pre-existing tools. INTERPRETATION: The outcome measures recommended here are structured around specific etiologies of LBP, span a patient's entire cycle of care, and allow for risk adjustment. Thus, when implemented, this set can be expected to facilitate meaningful comparisons and ultimately provide a continuous feedback loop, enabling ongoing improvements in quality of care. Much work lies ahead in implementation, revision, and validation of this set, but it is an essential first step toward establishing a community of LBP providers focused on maximizing the value of the care we deliver.


Asunto(s)
Dolor de la Región Lumbar/terapia , Evaluación de Resultado en la Atención de Salud/métodos , Manejo del Dolor/normas , Técnica Delphi , Humanos , Dimensión del Dolor/métodos , Satisfacción del Paciente , Factores de Riesgo , Resultado del Tratamiento
13.
Resuscitation ; 85(11): 1523-6, 2014 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-25151949

RESUMEN

INTRODUCTION: Effective and safe cardiac arrest care in the hospital setting is reliant on the immediate availability of emergency equipment. The patient safety literature highlights deficiencies in current approaches to resuscitation equipment provision, highlighting the need for innovative solutions to this problem. METHODS: We conducted a before-after study at a large NHS trust to evaluate the effect of a sealed tray system and database on resuscitation equipment provision. The system was evaluated by a series of unannounced inspections to assess resuscitation trolley compliance with local policy prior to and following system implementation. The time taken to check trolleys was assessed by timing clinicians checking both types of trolley in a simulation setting. RESULTS: The sealed tray system was implemented in 2010, and led to a significant increase in the number of resuscitation trolleys without missing, surplus, or expired items (2009: n=1 (4.76%) vs 2011: n=37 (100%), p<0.001). It also significantly reduced the time required to check each resuscitation trolley in the simulation setting (12.86 (95% CI: 10.02-15.71) vs 3.15 (95% CI: 1.19-4.51)min, p<0.001), but had no effect on the number of resuscitation trolleys checked every day over the previous month (2009: n=8 (38.10%) vs 2011: n=11 (29.73%), p=0.514). CONCLUSION: The implementation of a sealed tray system led to a significant and sustained improvement in resuscitation equipment provision, but had no effect on resuscitation trolley checking frequency.


Asunto(s)
Reanimación Cardiopulmonar/instrumentación , Servicio de Urgencia en Hospital/organización & administración , Equipos y Suministros de Hospitales/estadística & datos numéricos , Paro Cardíaco/terapia , Intervalos de Confianza , Urgencias Médicas , Femenino , Equipo Hospitalario de Respuesta Rápida/organización & administración , Humanos , Masculino , Botiquin , Grupo de Atención al Paciente/organización & administración , Seguridad del Paciente , Mejoramiento de la Calidad , Reproducibilidad de los Resultados , Factores de Tiempo , Resultado del Tratamiento , Reino Unido
14.
J Homosex ; 61(10): 1435-61, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24972149

RESUMEN

International surveys of victims show crime rates in England and Wales, including hate crimes, are among the highest in Europe. Nevertheless, sexual minority status is a less considered risk factor in general victimization research. This study used sexual minority status and sex to predict victimization across British Crime Surveys from 2007-2010. Logistic regression analyses showed sexual minority status groups were more likely than heterosexuals to be victimized from any and some specific crimes. However, bisexuals rather than lesbians or gay men were more consistently victimized, notably by sexual attacks and within the household. Implications for understanding victimization among these groups are discussed.


Asunto(s)
Víctimas de Crimen/estadística & datos numéricos , Homosexualidad Femenina/estadística & datos numéricos , Homosexualidad Masculina/estadística & datos numéricos , Bisexualidad/estadística & datos numéricos , Crimen/estadística & datos numéricos , Recolección de Datos , Femenino , Heterosexualidad/estadística & datos numéricos , Humanos , Masculino , Grupos Minoritarios/estadística & datos numéricos , Reino Unido/epidemiología
15.
BMJ Open ; 4(6): e004850, 2014 Jun 24.
Artículo en Inglés | MEDLINE | ID: mdl-24961717

RESUMEN

OBJECTIVE: There is increasing evidence to suggest that diet, one of the most important modifiable environmental factors, may play a role in preventing or delaying cognitive decline and Alzheimer's disease (AD). This study examines the relationship between dietary nutrients and brain biomarkers of AD in cognitively normal individuals (NL) with and without AD risk factors. DESIGN: As part of an ongoing brain imaging study, participants received clinical and laboratory examinations, a neurocognitive test battery, positron emission tomography (PET) with (11)C-Pittsburgh Compound-B (PiB; a measure of amyloid-ß (Aß) load) and (18)F-fluorodeoxyglucose (FDG; a proxy of neuronal activity), and completed semiquantitative food frequency questionnaires. SETTING: Research centre affiliated with the Alzheimer's disease Core Center at New York University School of Medicine. PARTICIPANTS: 49 NL individuals (age 25-72 years, 69% women) with dietary information, (11)C-PiB and (18)F-FDG PET scans were examined. RESULTS: Controlling for age and total caloric intake, higher intake of vitamin B12, vitamin D and ω-3 polyunsaturated fatty acid (PUFA) was associated with lower Aß load in AD regions on PiB-PET, while higher intake of ß-carotene and folate was associated with higher glucose metabolism on FDG-PET. ß-carotene and folate were associated with reduced glucose metabolism for women, apolipoprotein E epsilon 4 (APOE4) carriers and participants with positive AD family history, but not for their risk-free counterparts. The associations of vitamin B12, vitamin D and ω-3 PUFA with PiB retention were independent of gender, APOE and family history. The identified nutrient combination was associated with higher intake of vegetables, fruit, whole grains, fish and legumes, and lower intake of high-fat dairies, meat and sweets. CONCLUSIONS: Our data provide a potential pathophysiological mechanism for epidemiological findings showing that dietary interventions may play a role in the prevention of AD. Longitudinal studies are needed to determine whether there is a direct link between nutrient intake, brain biomarkers and risk of AD.


Asunto(s)
Enfermedad de Alzheimer/diagnóstico por imagen , Enfermedad de Alzheimer/metabolismo , Encéfalo/diagnóstico por imagen , Ingestión de Energía , Neuroimagen , Tomografía de Emisión de Positrones , Adulto , Anciano , Biomarcadores/metabolismo , Encéfalo/metabolismo , Estudios Transversales , Femenino , Fluorodesoxiglucosa F18 , Humanos , Masculino , Persona de Mediana Edad , Proyectos Piloto , Radiofármacos , Factores de Riesgo
16.
Adv J Mol Imaging ; 4(4): 43-57, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25599008

RESUMEN

Increased physical activity and higher adherence to a Mediterranean-type diet (MeDi) have been independently associated with reduced risk of Alzheimer's disease (AD). Their association has not been investigated with the use of biomarkers. This study examines whether, among cognitively normal (NL) individuals, those who are less physically active and show lower MeDi adherence have brain biomarker abnormalities consistent with AD. METHODS: Forty-five NL individuals (age 54 ± 11, 71% women) with complete leisure time physical activity (LTA), dietary information, and cross-sectional 3D T1-weigthed MRI, 11C-Pittsburgh Compound B (PiB) and 18F-fluorodeoxyglucose (FDG) Positron Emission Tomography (PET) scans were examined. Voxel-wise multivariate partial least square (PLS) regression was used to examine the effects of LTA, MeDi and their interaction on brain biomarkers. Age, gender, ethnicity, education, caloric intake, BMI, family history of AD, Apolipoprotein E (APOE) genotype, presence of hypertension and insulin resistance were examined as confounds. Subjects were dichotomized into more and less physically active (LTA+ vs. LTA-; n = 21 vs. 24), and into higher vs. lower MeDi adherence groups (n = 18 vs. 27) using published scoring methods. Spatial patterns of brain biomarkers that represented the optimal association between the images and the groups were generated for all modalities using voxel-wise multivariate Partial Least Squares (PLS) regression. RESULTS: Groups were comparable for clinical and neuropsychological measures. Independent effects of LTA and MeDi factors were observed in AD-vulnerable brain regions for all modalities (p < 0.001). Increased AD-burden (in particular higher Aß load and lower glucose metabolism) were observed in LTA- compared to LTA+ subjects, and in MeDi- as compared to MeDi+ subjects. A gradient effect was observed for all modalities so that LTA-/MeDi- subjects had the highest and LTA+/MeDi+ subjects had the lowest AD-burden (p < 0.001), although the LTA × MeDi interaction was significant only for FDG measures (p < 0.03). Adjusting for covariates did not attenuate these relationships. CONCLUSION: Lower physical activity and MeDi adherence were associated with increased brain AD-burden among NL individuals, indicating that lifestyle factors may modulate AD risk. Studies with larger samples and longitudinal evaluations are needed to determine the predictive power of the observed associations.

17.
J Interpers Violence ; 28(5): 887-909, 2013 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-23027835

RESUMEN

The current study investigated the impact that respondent gender, victim-perpetrator relationship, and the level of emotional closeness had on attributions in a hypothetical child sexual abuse case. A total of 160 university students read a hypothetical scenario depicting a female child sexually abused by an adult male. The perpetrator was either the victim's biological father or her stepfather, with this relationship described as being either emotionally close or emotionally distant. Respondents read one of four (2 victim-perpetrator relationship × 2 emotional closeness) scenarios before completing 26 attribution items pertaining to credibility, blame, and severity. Principle components analysis yielded five factors, namely victim credibility, mother culpability, perpetrator culpability, assault severity, and victim culpability. Multivariate analysis of covariance--controlling for respondent (Caucasian vs. non-Caucasian) ethnicity--revealed, as predicted, significant main effects for respondent gender, victim-perpetrator relationship, and emotional closeness. In general, females assigned more provictim/ antiperpetrator/antimother attributions than males. Results were also suggested that both victim-perpetrator relationship and emotional closeness influence attributions made toward the victim, perpetrator, and nonoffending mother. Methodological issues and suggestions for future work are also discussed.


Asunto(s)
Actitud , Abuso Sexual Infantil , Relaciones Padre-Hijo , Incesto , Relaciones Madre-Hijo , Distancia Psicológica , Adolescente , Adulto , Inglaterra , Femenino , Humanos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Análisis de Componente Principal , Factores Sexuales , Percepción Social
18.
J Homosex ; 59(10): 1424-42, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-23153027

RESUMEN

Research has shown that negative attitudes toward lesbians and gay men are common and widespread in Western societies. However, few studies have addressed attitudes toward transgender individuals. In addition, although research has shown that homophobic harassment and bullying is highly common among adolescents, little is known about adolescent's attitudes toward sexual minorities. This study aimed to fill these gaps in knowledge, by investigating adolescents' attitudes toward transgender individuals and possible attitudinal correlates of those attitudes. Participants (N = 188; 62 males and 126 females) were recruited in high schools in Lisbon, Portugal. Age ranged from 15 to 19 years (M = 17; SD = .96). Participants completed a questionnaire booklet measuring attitudes toward transgender individuals, lesbians, and gay men, and gender role beliefs. Results revealed that attitudes toward transgender individuals were significantly correlated with all attitude measures. Specifically, it was revealed that those participants who endorsed negative attitudes toward transgender individuals were also endorsing of negative attitudes toward lesbians and gay men and tended to adhere to traditional gender roles. A significant gender effect was found with males being more negative toward sexual minorities than females, but these negative attitudes were more extreme toward gay men than toward lesbian women. Implications of these findings are discussed.


Asunto(s)
Identidad de Género , Homofobia , Transexualidad/psicología , Adolescente , Actitud , Femenino , Homosexualidad Femenina/psicología , Homosexualidad Masculina/psicología , Humanos , Masculino , Portugal , Prejuicio , Psicología del Adolescente , Factores Sexuales , Personas Transgénero/psicología , Adulto Joven
19.
Cochrane Database Syst Rev ; (9): CD006247, 2012 Sep 12.
Artículo en Inglés | MEDLINE | ID: mdl-22972091

RESUMEN

BACKGROUND: Neutropenia is a potentially serious side effect of chemotherapy and a major risk factor for infections, which can be life-threatening. It has been hypothesised that a low bacterial diet (LBD) can prevent the occurrence of infections and (infection-related) mortality in cancer patients receiving chemotherapy causing episodes of neutropenia, but much remains unclear. OBJECTIVES: The primary objective was to determine the efficacy of an LBD versus a control diet in preventing the occurrence of infection and to decrease (infection-related) mortality in adult and paediatric cancer patients receiving chemotherapy causing episodes of neutropenia. Secondary objectives were to assess the time to first febrile episode, the need for empirical antibiotic therapy, diet acceptability and quality of life. SEARCH METHODS: We searched the following electronic databases: the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library, issue 3 2011), Database of Abstracts of Reviews of Effects (DARE) (The Cochrane Library, issue 3 2011), PubMed (from 1946 to 20 October 2011), EMBASE (from 1980 to 20 October 2011) and CINAHL (from 1981 to 20 October 2011). In addition, we searched several conference proceedings (from 2000 to either 2010 or 2011) and reference lists of relevant articles. To identify ongoing trials we contacted researchers working on this topic and we scanned the National Institute of Health Register and the ISRCTN Register (www.controlled-trials.com; searched May 2012). SELECTION CRITERIA: Randomised controlled trials (RCTs) comparing the use of an LBD with a control diet with regard to infection rate, (infection-related) mortality, time to first febrile episode, need for empirical antibiotic therapy, diet acceptability, and quality of life in adult and paediatric cancer patients receiving chemotherapy causing episodes of neutropenia. DATA COLLECTION AND ANALYSIS: Two review authors independently performed the study selection, 'Risk of bias' assessment and data extraction. Analyses were performed according to the guidelines of the Cochrane Handbook for Systematic Reviews of Interventions. MAIN RESULTS: We identified three RCTs assessing different intervention and control diets in 192 patients (97 randomised to intervention diet; 95 to control diet) with different types of malignancies. Co-interventions (e.g. protective environment, antimicrobial prophylaxis, central venous catheter care, oral care, hygiene practices and colony-stimulating factors) and outcome definitions also differed between studies. In all included studies it was standard policy to give empirical antibiotics (and sometimes also antimycotics) to (some of) the patients diagnosed with an infection. Two studies included adults and one study included children. In all studies only a scant description of treatment regimens was provided. All studies had methodological limitations. Pooling of results of included studies was not possible. In two individual studies no statistically significant difference in infection rate between the intervention and control diet was identified; another study showed no significant difference in the number of chemotherapy cycles with an infection between the treatment groups. None of the studies mentioned infection-related mortality, but in one study no significant difference in overall survival between the treatment groups was observed. Time from onset of neutropenia to fever, the duration of empirical antibiotics and antimycotics, diet acceptability (i.e. following the diet easily and following the diet throughout all chemotherapy cycles) and quality of life were all evaluated by only one study; for all outcomes no statistically significant differences between the treatment arms was observed. AUTHORS' CONCLUSIONS: At the moment there is no evidence from individual RCTs in children and adults with different malignancies that underscores the use of an LBD for the prevention of infection and related outcomes. All studies differed with regard to co-interventions, outcome definitions, and intervention and control diets. Since pooling of results was not possible and all studies had serious methodological limitations, no definitive conclusions can be made. It should be noted that 'no evidence of effect', as identified in this review, is not the same as 'evidence of no effect'. Based on the currently available evidence, we are not able to give recommendations for clinical practice. More high-quality research is needed.


Asunto(s)
Antineoplásicos/efectos adversos , Infecciones Bacterianas/prevención & control , Micosis/prevención & control , Neoplasias/tratamiento farmacológico , Neutropenia/dietoterapia , Antibacterianos/uso terapéutico , Antifúngicos/uso terapéutico , Fiebre/dietoterapia , Humanos , Neutropenia/inducido químicamente , Ensayos Clínicos Controlados Aleatorios como Asunto
20.
Cancer Chemother Pharmacol ; 70(3): 461-9, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22864876

RESUMEN

PURPOSE: Barasertib (AZD1152) is a pro-drug that rapidly undergoes phosphatase-mediated cleavage in serum to release barasertib-hQPA, a selective Aurora B kinase inhibitor that has shown preliminary activity in clinical studies of patients with acute myeloid leukemia (AML). The pharmacokinetic (PK), metabolic and excretion profiles of barasertib and barasertib-hQPA were characterized in this open-label Phase I study. METHODS: Five patients with poor prognosis AML (newly diagnosed, relapsed or refractory) received barasertib 1,200 mg as a 7-day continuous infusion every 28 days. On Day 2 of Cycle 1 only, patients also received a 2-hour infusion of [(14)C]-barasertib. Blood, urine and feces samples were collected at various time points during Cycle 1. Safety and preliminary efficacy were also assessed. RESULTS: Barasertib-hQPA was extensively distributed to tissues, with a slow rate of total clearance (CL = 31.4 L/h). Overall, 72-82 % of radioactivity was recovered, with approximately double the amount recovered in feces (mean = 51 %) compared with urine (mean = 27 %). The main metabolism pathways for barasertib were (1) cleavage of the phosphate group to form barasertib-hQPA, followed by oxidation and (2) loss of the fluoroaniline moiety to form barasertib-hQPA desfluoroaniline, followed by oxidation. One of the four patients evaluable for response entered complete remission. No new or unexpected safety findings were observed; the most common adverse events were nausea and stomatitis. CONCLUSIONS: The PK profile of barasertib is similar to previous studies using the same dosing regimen in patients with AML. The majority of barasertib-hQPA clearance occurred via hepatic metabolic routes.


Asunto(s)
Leucemia Mieloide Aguda/tratamiento farmacológico , Organofosfatos/farmacocinética , Proteínas Serina-Treonina Quinasas/antagonistas & inhibidores , Quinazolinas/farmacocinética , Adulto , Anciano , Aurora Quinasa B , Aurora Quinasas , Femenino , Humanos , Infusiones Intravenosas , Leucemia Mieloide Aguda/patología , Masculino , Persona de Mediana Edad , Organofosfatos/efectos adversos , Organofosfatos/uso terapéutico , Profármacos , Quinazolinas/efectos adversos , Quinazolinas/uso terapéutico , Inducción de Remisión , Factores de Tiempo , Resultado del Tratamiento
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