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1.
J Environ Manage ; 352: 120096, 2024 Feb 14.
Artigo em Inglês | MEDLINE | ID: mdl-38262286

RESUMO

The colour of a waterbody may be indicative of the water quality or environmental change. Monitoring water colour can therefore be an important proxy for various waterbody processes. To this aim, satellites are increasingly being used as viable alternatives to field measurements. This study investigates whether water colour derived from satellites is an effective predictor of spatial and temporal patterns of water quality or environmental change in small waterbodies and can be used to explain the drivers of trends in these waterbodies. As a case study, 145 small waterbodies (<1 km2) in the greater Melbourne, south-eastern Australia were analysed to understand water colour spatio-temporal patterns using Sentinel-2 and Landsat 5, 7 and 8 satellite surface reflectance imagery over a period of 30 years. We found that the baseline water colour of small waterbodies in the greater Melbourne region has a dominant wavelength in the green to yellow region of the visible spectrum (λd ranging from 532 to 578 nm). Waterbody design factors and broader climate factors were also tested to understand the spatial variation of baseline water colour. Macrophyte ratio and the shoreline development index were shown to be the primary waterbody design factors that affect water colour. Some waterbodies are responsive to climate variability based on investigating how climate factors impact the water colour variability. Local climate factors had more impact than regional climate factors. Results from this study highlight how water colour could be used as a proxy for waterbody health assessment and how spatio-temporal variations in water colour can be used to assess environmental trends.


Assuntos
Monitoramento Ambiental , Tecnologia de Sensoriamento Remoto , Austrália , Tecnologia de Sensoriamento Remoto/métodos , Monitoramento Ambiental/métodos , Cor , Qualidade da Água
2.
BMC Public Health ; 23(1): 1742, 2023 09 07.
Artigo em Inglês | MEDLINE | ID: mdl-37679667

RESUMO

BACKGROUND: Excess weight and an unhealthy diet are risk factors for many cancers, and in high income countries, both are more prevalent among low income families. Dietary interventions targeting primary-school aged children (under 11) can improve healthy eating behaviours, but most are not designed to support the translation of skills learnt in the classroom to the home setting. This paper assessed attitudes and approaches to cooking and eating at home, and the potential to enhance engagement in healthy eating through the COOKKIT intervention. METHODS: COOKKIT is an intervention to deliver weekly cooking classes and supportive materials for low-income families to maintain healthy eating at home. Preliminary qualitative interviews were conducted with teachers and parent-child dyads from a range of primary schools in the UK to explore attitudes, barriers and facilitators for healthy eating and inform the development of COOKKIT. Following implementation, ten children (8-9 y/o) participated in post-intervention focus groups, alongside interviews with teaching staff and parents. RESULTS: Thematic analysis identified five themes under which to discuss the children's experience of food, cooking and the impact of COOKKIT: Involving children in planning and buying food for the family; Engaging children in preparing meals at home; Trying to eat healthy meals together in the midst of busy lives; Role-modelling; and Balancing practicalities, information and engagement when delivering cooking classes. CONCLUSIONS: Results suggest COOKKIT provides engaging and easy to follow in-school resources for children and school staff with take-home kits facilitating continued engagement and reinforcing lessons learned in the home environment. Importantly, participants highlighted the combination of healthy eating information, applied practical skills and low costs could support families to continue following the COOKKIT advice beyond the intervention, suggesting further evaluation of COOKKIT is warranted.


Assuntos
Culinária , Instituições Acadêmicas , Humanos , Criança , Dieta Saudável , Grupos Focais , Refeições
3.
Res Sports Med ; : 1-15, 2022 Jun 16.
Artigo em Inglês | MEDLINE | ID: mdl-35711113

RESUMO

Athletes report poor breast/bra knowledge, breast pain, sports bras causing lacerations and chafing, negatively affecting sports performance. No bra interventions to address these issues are reported. Working with 142 UK female athletes preparing for Tokyo Olympics/Paralympics (27 sports), this multi-phase intervention assessed breast/bra knowledge, preferences, issues via surveys and breast/bra assessments. Data were used to develop two sports bras. A total of 112 athletes were prescribed one of the new bras through individual assessments. After four weeks, wear athletes completed evaluations. Pre-intervention breast/bra knowledge was low (83% ≤average), multiple breast/bra issues were reported and most athletes wore ill-fitting, loose bras, offering limited support. Post-intervention, 63% reported improved knowledge and 97% reported their prescribed bra as better than their original bra. Eighty-seven per cent reported benefitting from this intervention, with 17% reporting improved performance. This intervention effectively assessed sports bra needs, developed and implemented solutions, which improved knowledge and potentially performance for some UK athletes.

5.
Int J Behav Nutr Phys Act ; 14(1): 119, 2017 09 05.
Artigo em Inglês | MEDLINE | ID: mdl-28870208

RESUMO

BACKGROUND: Habit-interventions are designed to promote the automaticity of healthy behaviours and may also enhance self-regulatory skills during the habit-formation process. A recent trial of habit-based advice for weight loss (10 Top Tips; 10TT), found that patients allocated to 10TT lost significantly more weight over 3 months than those allocated to usual care, and reported greater increases in automaticity for the target behaviours. The current study aimed to test the hypothesis that i) 10TT increased self-regulatory skills more than usual care, and ii) that self-regulatory skills and automaticity changes mediated the effect of 10TT on weight loss. METHODS: 537 obese patients from 14 primary care practices in the UK were randomized to receive 10TT or usual care. Patients in the 10TT group received a leaflet containing tips for weight loss and healthy habits formation, a self-monitoring log book and a wallet-sized shopping guide on how to read food labels. Patients were weighed and completed validated questionnaires for self-regulation and automaticity at baseline and 3-month follow-up. Within-group and Between-group effects were explored using Paired T-test and ANCOVA, respectively. Mediation was assessed using bootstrapping to estimate indirect effects and the sobel test. RESULTS: Over 3 months patients who were given 10TT reported greater increases in self-regulatory skills (Mean difference: .08; 95% CI .01; .15) than those who received usual care. Changes in self-regulatory skills and automaticity over 3 months mediated the effect of the intervention on weight loss (ß = .52, 95% Bias Corrected CI .17; .91). CONCLUSIONS: As hypothesised, 10TT enhanced self-regulatory skills and changes in self-regulatory skills and automaticity mediated the effect of the intervention on weight loss. This supports the proposition that self-regulatory training and habit formation are important features of weight loss interventions. TRIAL REGISTRATION: This study was prospectively registered with the International Standard Randomised Controlled Trials ( ISRCTN16347068 ) on 26 September 2011.


Assuntos
Hábitos , Obesidade/psicologia , Obesidade/terapia , Autocontrole/psicologia , Redução de Peso , Adulto , Idoso , Índice de Massa Corporal , Feminino , Seguimentos , Comportamentos Relacionados com a Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Atenção Primária à Saúde , Reprodutibilidade dos Testes , Tamanho da Amostra , Fatores Socioeconômicos , Inquéritos e Questionários
6.
Int J Lang Commun Disord ; 52(3): 374-387, 2017 05.
Artigo em Inglês | MEDLINE | ID: mdl-27882642

RESUMO

BACKGROUND: Conversation therapy for aphasia is a complex intervention comprising multiple components and targeting multiple outcomes. UK Medical Research Council (MRC) guidelines published in 2008 recommend that in addition to measuring the outcomes of complex interventions, evaluation should seek to clarify how such outcomes are produced, including identifying the hypothesized mechanisms of change. AIMS: To identify mechanisms of change within a conversation therapy for people with aphasia and their partners. Using qualitative methods, the study draws on behaviour change theory to understand how and why participants make changes in conversation during and after therapy. METHODS & PROCEDURES: Data were derived from 16 participants (eight people with aphasia; eight conversation partners) who were recruited to the Better Conversations with Aphasia research project and took part in an eight session conversation therapy programme. The dataset consists of in-therapy discussions and post-therapy interviews, which are analysed using Framework Analysis. OUTCOMES & RESULTS: Seven mechanisms of conversational behaviour change are identified and linked to theory. These show how therapy can activate changes to speakers' skills and motivation for using specific behaviours, and to the conversational opportunities available for strategy use. CONCLUSIONS & IMPLICATIONS: These clinically relevant findings offer guidance about the processes involved in producing behavioural change via conversation therapy. A distinction is made between the process involved in motivating change and that involved in embedding change. Differences are also noted between the process engaged in reducing unhelpful behaviour and that supporting new uses of compensatory strategies. Findings are expected to have benefits for those seeking to replicate therapy's core processes both in clinical practice and in future research.


Assuntos
Afasia/psicologia , Afasia/terapia , Terapia Comportamental , Terapia da Linguagem/métodos , Avaliação de Processos e Resultados em Cuidados de Saúde/métodos , Transtorno de Comunicação Social/psicologia , Transtorno de Comunicação Social/terapia , Adulto , Idoso , Afasia de Broca/psicologia , Afasia de Broca/terapia , Conscientização , Feminino , Fidelidade a Diretrizes , Humanos , Relações Interpessoais , Masculino , Pessoa de Meia-Idade , Modelos Psicológicos , Testes Neuropsicológicos , Gravação em Vídeo
7.
Lancet Oncol ; 17(1): 109-14, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26655422

RESUMO

BACKGROUND: The value of screen detection and treatment of ductal carcinoma in situ (DCIS) is a matter of controversy. At present, the extent to which the diagnosis and treatment of DCIS could prevent the occurrence of invasive breast cancer in the future is not clear. We sought to estimate the association between detection of DCIS at screening and invasive interval cancers subsequent to the relevant screen. METHODS: We obtained aggregate data for screen-detected cancers from 84 local screening units within 11 regional Quality Assurance Reference Centres in England, Wales, and Northern Ireland from the National Health Service Breast Screening Programme. Data for DCIS diagnoses were obtained for women aged 50-64 years who were invited to and attended mammographic breast screening from April 1, 2003, to March 31, 2007 (4 screening years). Patient-level data for interval cancer arising in the 36 months after each of these were analysed by Poisson regression with invasive interval cancer screen detection rate as the outcome variable; DCIS detection frequencies were fitted first as a continuous and then as a categorical variable. We repeated this analysis after adjustment with both small size and high-grade invasive screen-detected cancers. FINDINGS: We analysed data for 5,243,658 women and on interval cancers occurring in the 36 months after the relevant screen. The average frequency of DCIS detected at screening was 1·60 per 1000 women screened (median 1·50 [unit range 0·54-3·56] [corrected to] per 1000 women). There was a significant negative association of screen-detected DCIS cases with the rate of invasive interval cancers (Poisson regression coefficient -0·084 [95% CI -0·13 to -0·03]; p=0·002). 90% of units had a DCIS detection frequency within the range of 1·00 to 2·22 per 1000 women; in these units, for every three screen-detected cases of DCIS, there was one fewer invasive interval cancer in the next 3 years. This association remained after adjustment for numbers of small screen-detected invasive cancers and for numbers of grade 3 invasive screen-detected cancers. INTERPRETATION: The association between screen-detected DCIS and subsequent invasive interval cancers suggests that detection and treatment of DCIS is worthwhile in prevention of future invasive disease. FUNDING: UK Department of Health Policy Research Programme and NHS Cancer Screening Programmes.


Assuntos
Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/epidemiologia , Carcinoma Ductal de Mama/diagnóstico por imagem , Carcinoma Ductal de Mama/epidemiologia , Carcinoma Intraductal não Infiltrante/diagnóstico por imagem , Carcinoma Intraductal não Infiltrante/epidemiologia , Idoso , Carcinoma Intraductal não Infiltrante/patologia , Detecção Precoce de Câncer , Feminino , Humanos , Incidência , Mamografia , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Tempo , Reino Unido/epidemiologia
8.
Int J Behav Nutr Phys Act ; 13: 87, 2016 Aug 02.
Artigo em Inglês | MEDLINE | ID: mdl-27484457

RESUMO

BACKGROUND: Eating self-regulatory capacity can help individuals to cope with the obesogenic environment and achieve, as well as maintain, a healthy weight and diet. At present, there is no comprehensive, reliable and valid questionnaire for assessing this capacity and measuring change in response to self-regulation interventions in adults. This paper reports the development of the Self-regulation of Eating Behaviour Questionnaire (SREBQ) for use in UK adults, and presents evidence for its reliability and construct validity. The development of the SREBQ involved generation of an item pool, followed by two pilot studies (Samples 1 and 2) and a test of the questionnaire's underlying factor structure (Sample 3). The final version of the SREBQ was then assessed for reliability and construct validity (Sample 4). RESULTS: Development of the SREBQ resulted in a 5-item questionnaire. The face validity was satisfactory, as assessed by the pilot studies. The factor structure analysis (Sample 3) suggested that it has a single underlying factor, which was confirmed in a second sample (Sample 4). The SREBQ had strong construct validity, showing a positive correlation with general measures of self-regulation. It was also positively correlated with motivation and behavioural automaticity, and negatively correlated with food responsiveness and emotional over-eating (p < 0.001). It showed good discriminant validity, as it was only weakly associated with satiety responsiveness, food fussiness and slowness in eating. CONCLUSIONS: The SREBQ is a reliable and valid measure for assessment of eating self-regulatory capacity in the general UK adult population.


Assuntos
Emoções , Comportamento Alimentar/psicologia , Motivação , Autocontrole , Inquéritos e Questionários/normas , Adulto , Idoso , Peso Corporal , Dieta , Ingestão de Alimentos , Análise Fatorial , Feminino , Humanos , Hiperfagia/psicologia , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Psicometria , Reprodutibilidade dos Testes , Adulto Jovem
9.
BMC Cancer ; 15: 526, 2015 Jul 18.
Artigo em Inglês | MEDLINE | ID: mdl-26187714

RESUMO

BACKGROUND: There is a clear link between irregular breathing and errors in medical imaging and radiation treatment. The audiovisual biofeedback system is an advanced form of respiratory guidance that has previously demonstrated to facilitate regular patient breathing. The clinical benefits of audiovisual biofeedback will be investigated in an upcoming multi-institutional, randomised, and stratified clinical trial recruiting a total of 75 lung cancer patients undergoing radiation therapy. METHODS/DESIGN: To comprehensively perform a clinical evaluation of the audiovisual biofeedback system, a multi-institutional study will be performed. Our methodological framework will be based on the widely used Technology Acceptance Model, which gives qualitative scales for two specific variables, perceived usefulness and perceived ease of use, which are fundamental determinants for user acceptance. A total of 75 lung cancer patients will be recruited across seven radiation oncology departments across Australia. Patients will be randomised in a 2:1 ratio, with 2/3 of the patients being recruited into the intervention arm and 1/3 in the control arm. 2:1 randomisation is appropriate as within the interventional arm there is a screening procedure where only patients whose breathing is more regular with audiovisual biofeedback will continue to use this system for their imaging and treatment procedures. Patients within the intervention arm whose free breathing is more regular than audiovisual biofeedback in the screen procedure will remain in the intervention arm of the study but their imaging and treatment procedures will be performed without audiovisual biofeedback. Patients will also be stratified by treating institution and for treatment intent (palliative vs. radical) to ensure similar balance in the arms across the sites. Patients and hospital staff operating the audiovisual biofeedback system will complete questionnaires to assess their experience with audiovisual biofeedback. The objectives of this clinical trial is to assess the impact of audiovisual biofeedback on breathing motion, the patient experience and clinical confidence in the system, clinical workflow, treatment margins, and toxicity outcomes. DISCUSSION: This clinical trial marks an important milestone in breathing guidance studies as it will be the first randomised, controlled trial providing the most comprehensive evaluation of the clinical impact of breathing guidance on cancer radiation therapy to date. This study is powered to determine the impact of AV biofeedback on breathing regularity and medical image quality. Objectives such as determining the indications and contra-indications for the use of AV biofeedback, evaluation of patient experience, radiation toxicity occurrence and severity, and clinician confidence will shed light on the design of future phase III clinical trials. TRIAL REGISTRATION: This trial has been registered with the Australian New Zealand Clinical Trials Registry (ANZCTR), its trial ID is ACTRN12613001177741 .


Assuntos
Biorretroalimentação Psicológica/instrumentação , Neoplasias Pulmonares/radioterapia , Técnicas de Imagem de Sincronização Respiratória/métodos , Austrália , Biorretroalimentação Psicológica/métodos , Humanos , Interpretação de Imagem Assistida por Computador/normas , Neoplasias Pulmonares/patologia , Técnicas de Imagem de Sincronização Respiratória/efeitos adversos , Técnicas de Imagem de Sincronização Respiratória/instrumentação , Inquéritos e Questionários , Resultado do Tratamento
10.
Sci Total Environ ; 949: 175186, 2024 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-39097029

RESUMO

The Water-Energy-Food Nexus (WEFN) has gained international attention as an approach for managing water more holistically, building on the progress made by the Integrated Water Resources Management (IWRM) approach. However, modelling the availability of water, energy, and food and their interconnections is complex, with major barriers that include the availability of both data and modelling platforms capable of assessing the interconnected systems of the WEFN. There have been attempts to model resource availability in each sector generally, but few attempts to consider the WEFN in complex transboundary basins, especially considering Sustainable Development Goals (SDGs). Here, a water, energy, and food availability model was developed using a combination of remotely sensed, national government reported, and global datasets. The model explores the complex interactions between the physical availability and production of water, energy, and food for several subbasins representing different states. Results showed the potential impacts of socioeconomic development, population changes and transboundary cooperation on resources. Transboundary cooperation in the case study Ma Basin in Southeast Asia, under existing resources and operations could improve monthly food security and reduce coal power operations using excess hydropower in the basin during the dry season. These findings show that transboundary cooperation improves access to energy and food, whilst potentially reducing demands for water. Furthermore, the research has highlighted ways in which transboundary cooperation can further assist in attaining SDGs 12 and 13 on responsible production and climate action, respectively. The modelling framework is easily transferable and can support similar analysis in other basins, contributing to global attainment of several SDGs.

11.
J Med Screen ; 31(2): 115-118, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38105465

RESUMO

In response to the COVID-19 pandemic, a temporary change in policy was implemented in 2020. Breast screening services in England were advised to change from timed appointments to an open invitation for invitees to contact the service and arrange an appointment. This change to invitation methodology had potential benefits and risks including impacting inequalities in uptake. Qualitative data were collected by online questionnaire from 23 service providers and routinely collected quantitative uptake data were analysed to investigate the impact of open invitations on the National Programme in the South of England. Office for National Statistics and general practitioner (GP) practice profile data enabled the modelling of sociodemographic characteristics of breast screening invitees at each GP practice. Most services changed to open invitations (17/23), 82% of which altered administrative capacity and/or procedures to accommodate this change. Logistic benefits were reported including a more consistent flow of participants, fewer long gaps and fewer wasted slots. The change to open invitations was associated with a 7.2% reduction in the percentage of participants screened, accounting for participant sociodemographics and historical screening provider uptake. The inequality in screening uptake experienced by participants of minority ethnic background was exacerbated by the change to open invitations. Open invitations, whilst affording logistic benefits in an unprecedented pandemic era, were associated with reduced overall uptake and exacerbation of existing health inequality experienced by women of minority ethnic background. The broader impact on services highlighted the need for sustainability of measures taken to accommodate such operational changes.


Assuntos
Neoplasias da Mama , COVID-19 , Detecção Precoce de Câncer , Acessibilidade aos Serviços de Saúde , Humanos , Feminino , Inglaterra , Neoplasias da Mama/diagnóstico , Detecção Precoce de Câncer/estatística & dados numéricos , Detecção Precoce de Câncer/métodos , COVID-19/epidemiologia , COVID-19/diagnóstico , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Pessoa de Meia-Idade , SARS-CoV-2 , Inquéritos e Questionários , Programas de Rastreamento/estatística & dados numéricos , Programas de Rastreamento/métodos , Disparidades em Assistência à Saúde/estatística & dados numéricos , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricos , Mamografia/estatística & dados numéricos
12.
EJNMMI Rep ; 8(1): 16, 2024 Jun 07.
Artigo em Inglês | MEDLINE | ID: mdl-38844699

RESUMO

BACKGROUND: During a phase 0 clinical trial of an investigational programmed cell death ligand-1 (PD-L1) PET tracer in patients with non-small cell lung cancer (NSCLC), three patients received booster doses of COVID-19 vaccines before PD-L1 imaging. METHODS: Five patients underwent whole-body PET/CT imaging with a novel PD-L1 tracer, constructed by attaching 89Zr to the anti PD-L1 antibody durvalumab. Intramuscular (deltoid) booster doses of mRNA BNT162b2 COVID-19 mRNA vaccine were coincidentally given to three patients in the month before PD-L1 tracer injection. RESULTS: Two recently-vaccinated patients, in remission of NSCLC and receiving non-immunosuppressive cancer therapies (immunotherapy and tyrosine kinase inhibitor respectively), showed increasing PD-L1 tracer uptake in ipsilateral axillary lymph nodes. No asymmetric nodal uptake was seen in a third recently-vaccinated patient who was receiving immunosuppressive chemotherapy, or in two patients not recently-vaccinated. CONCLUSION: Immune response to mRNA BNT162b2 vaccination may involve regulation by PD-L1 positive immune cells in local draining lymph nodes in immunocompetent patients. TRIAL REGISTRATION: This trial was registered with the Australian New Zealand Clinical Trials Registry. Registration number ACTRN12621000171819. Date of Trial Registration 8/2/2021. Date of enrolment of 1st patient 11/4/2021. URL of trial registry record: https://www.australianclinicaltrials.gov.au/anzctr/trial/ACTRN12621000171819 .

13.
Lung Cancer ; 187: 107414, 2024 01.
Artigo em Inglês | MEDLINE | ID: mdl-38088015

RESUMO

Epidermal growth factor receptor (EGFR) mutations are detected in up to one third of patients with unresectable stage III non-small cell lung cancer (NSCLC). The current standard of care for unresectable stage III NSCLC is consolidation durvalumab for patients who have not progressed following concurrent chemoradiotherapy (the 'PACIFIC regimen'). However, the benefit of immunotherapy, specifically in patients with EGFR mutation-positive (EGFRm) tumors, is not well characterized, and this treatment approach is not recommended in these patients, based on a recent ESMO consensus statement. EGFR-tyrosine kinase inhibitors (EGFR-TKIs) have demonstrated significant improvements in patient outcomes in EGFRm metastatic NSCLC. The benefits of these agents have also translated to patients with EGFRm early-stage resectable disease as adjuvant therapy. The role of EGFR-TKIs has yet to be prospectively characterized in the unresectable setting. Preliminary efficacy signals for EGFR-TKIs in unresectable EGFRm stage III NSCLC have been reported from a limited number of subgroup and retrospective studies. Several clinical trials are ongoing assessing the safety and efficacy of EGFR-TKIs in this patient population. Here, we review the current management of unresectable EGFRm stage III NSCLC. We outline the rationale for investigating EGFR-TKI strategies in this setting and discuss ongoing studies. Finally, we discuss the evidence gaps and future challenges for treating patients with unresectable EGFRm stage III NSCLC.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/genética , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/genética , Estudos Retrospectivos , Inibidores de Proteínas Quinases/farmacologia , Receptores ErbB/genética , Mutação/genética
14.
Artigo em Inglês | MEDLINE | ID: mdl-39233020

RESUMO

PURPOSE: 18F-fluorothymidine (FLT) positron emission tomography (PET) enables sensitive imaging of bone marrow (BM) proliferation. Sequential FLT-PET/computed tomography scans before and during chemoradiation therapy (CRT) for non-small cell lung cancer were repurposed to investigate the dose-response effects of radiation on BM proliferation. METHODS AND MATERIALS: Twenty-six non-small cell lung cancer patients underwent platinum-based CRT to 60 Gy in 30 fractions with FLT-PET/computed tomography scans at baseline, week 2 (20 Gy), and week 4 (40 Gy). FLT uptake in BM was isolated using Medical Image Merge software. Weeks 2 and 4 FLT-PET BM scans were fused with contemporaneous radiation isodose distributions. Relationships between radiation dose and FLT BM uptake (highest standardized uptake values within the volume and visual parameters) were analyzed using generalized linear and restricted cubic spline models. Percentage volumes of total BM without appreciable FLT uptake ("ablated") on weeks 2 and 4 FLT-PET scans were calculated by comparisons with baseline scans. RESULTS: Thoracic FLT uptake was ablated in BM regions exposed to cumulative radiation doses ≥3 Gy by week 2. In all cases, BM FLT's highest standardized uptake values within the volume declined rapidly as the radiation dose increased. BM proliferation significantly decreased by >95% after ≥3 to 4 Gy at 2 weeks and ≥4 to 5 Gy at 4 weeks. The ablated BM volume increased from week 2 to week 4 as BM in the penumbra accumulated radiation dose. The median percentage of total BM ablated was 13.1% (range, 5.6%-20.3%) at 2 weeks and 15.7% (range, 9.2%-24.1%) at 4 weeks. Mean lymphocyte counts fell from a baseline of 2.01 × 109/L to 0.77 at week 2 and 0.60 at week 4. Lymphocyte decline strongly correlated with the percentage of total BM ablated by week 4 (y = -46 to 1.64x; R2adj = 0.34; P = .001). CONCLUSIONS: BM ablation associated with low-dose radiation exposure during CRT correlated significantly with lower week 4 lymphocyte counts. BM is a potential organ at risk, and reducing the BM volume exposed to ≥3 Gy may help preserve lymphocytes, which is essential for effective adjuvant immunotherapy.

15.
Cancer Treat Rev ; 130: 102807, 2024 Aug 02.
Artigo em Inglês | MEDLINE | ID: mdl-39151281

RESUMO

Up to 40% of patients with non-small cell lung cancer (NSCLC) develop central nervous system (CNS) metastases. Current treatments for this subgroup of patients with advanced NSCLC include local therapies (surgery, stereotactic radiosurgery, and, less frequently, whole-brain radiotherapy), targeted therapies for oncogene-addicted NSCLC (small molecules, such as tyrosine kinase inhibitors, and antibody-drug conjugates), and immune checkpoint inhibitors (as monotherapy or combination therapy), with multiple new drugs in development. However, confirming the intracranial activity of these treatments has proven to be challenging, given that most lung cancer clinical trials exclude patients with untreated and/or progressing CNS metastases, or do not include prespecified CNS-related endpoints. Here we review progress in the treatment of patients with CNS metastases originating from NSCLC, examining local treatment options, systemic therapies, and multimodal therapeutic strategies. We also consider challenges regarding assessment of treatment response and provide thoughts around future directions for managing CNS disease in patients with advanced NSCLC.

16.
Lung Cancer ; 190: 107531, 2024 04.
Artigo em Inglês | MEDLINE | ID: mdl-38513538

RESUMO

INTRODUCTION: Smoking is a risk factor for the development of lung cancer and reduces life expectancy within the general population. Retrospective studies suggest that non-smokers have better outcomes after treatment for lung cancer. We used a prospective database to investigate relationships between pre-treatment smoking status and survival for a cohort of patients with stage III non-small-cell lung cancer (NSCLC) treated with curative-intent concurrent chemoradiotherapy (CRT). METHODS: All patients treated with CRT for stage III NSCLC at a major metropolitan cancer centre were prospectively registered to a database. A detailed smoking history was routinely obtained at baseline. Kaplan-Meier statistics were used to assess overall survival and progression-free survival in never versus former versus current smokers. RESULTS: Median overall survival for 265 eligible patients was 2.21 years (95 % Confidence Interval 1.78, 2.84). It was 5.5 years (95 % CI 2.1, not reached) for 25 never-smokers versus 1.9 years (95 % CI 1.5, 2.7) for 182 former smokers and 2.2 years (95 % CI 1.3, 2.7) for 58 current smokers. Hazard ratio for death was 2.43 (95 % CI 1.32-4.50) for former smokers and 2.75 (95 % CI 1.40, 5.40) for current smokers, p = 0.006. Actionable tumour mutations (EGFR, ALK, ROS1) were present in more never smokers (14/25) than former (9/182) or current (3/58) smokers. TKI use was also higher in never smokers but this was not significantly associated with superior survival (Hazard ratio 0.71, 95 % CI 0.41, 1.26). CONCLUSIONS: Never smokers have substantially better overall survival than former or current smokers after undergoing CRT for NSCLC.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Neoplasias Pulmonares/tratamento farmacológico , Estudos Retrospectivos , Proteínas Tirosina Quinases , Proteínas Proto-Oncogênicas , Fumar/efeitos adversos , Quimiorradioterapia
17.
JMIR Res Protoc ; 13: e53301, 2024 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-38578682

RESUMO

BACKGROUND: Exercise rehabilitation is a promising strategy for reducing cardiovascular disease risk among patients with breast cancer. However, the evidence is primarily derived from programs based at exercise centers with in-person supervised delivery. Conversely, most patients report a preference for home-based rehabilitation. As such, there is a clear need to explore strategies that can provide real-time supervision and coaching while addressing consumer preferences. Evidence from cardiac rehabilitation has demonstrated the noninferiority of a smartphone-based telerehabilitation approach (REMOTE-CR) to improve cardiorespiratory fitness in people with cardiovascular disease compared to a center-based program. OBJECTIVE: This study aims to assess the feasibility, safety, and preliminary efficacy of the REMOTE-CR program adapted for patients with breast cancer at risk of cardiotoxicity (REMOTE-COR-B). We will also assess the satisfaction and usability of REMOTE-COR-B. METHODS: We will conduct a single-arm feasibility study of the REMOTE-COR-B program among patients with stage I-III breast cancer who are at risk of cardiotoxicity (taking treatment type and dose, as well as other common cardiovascular disease risk factors into account) and who are within 24 months of completing primary definitive treatment. Participants (target sample size of 40) will receive an 8-week smartphone-based telerehabilitation exercise program involving remotely delivered real-time supervision and behavior change support. The platform comprises a smartphone and wearable heart rate monitor, as well as a custom-built smartphone app and web application. Participants will be able to attend remotely monitored exercise sessions during set operating hours each week, scheduled in both the morning and evening. Adherence is the primary outcome of the trial, assessed through the number of remotely monitored exercise sessions attended compared to the trial target (ie, 3 sessions per week). Secondary outcomes include additional trial feasibility indicators (eg, recruitment and retention), safety, satisfaction, and usability, and objective and patient-reported efficacy outcomes (cardiovascular fitness, quality of life, fatigue, self-reported exercise, self-efficacy, habit strength, and motivation). Adherence, feasibility, and safety outcomes will be assessed during the intervention period; intervention satisfaction and usability will be assessed post intervention; and objective and patient-reported efficacy outcomes will be assessed at baseline, post intervention (2-month postbaseline assessment), and at follow-up (5-month postbaseline assessment). RESULTS: Recruitment for this trial commenced in March 2023, and 7 participants had been recruited as of the submission of the manuscript. The estimated completion date for the project is October 2024, with results expected to be published in mid-2025. CONCLUSIONS: The REMOTE-COR-B intervention is a novel and promising approach to providing exercise therapy to patients with breast cancer at risk of cardiotoxicity who have unique needs and heightened safety risks. This project will provide important information on the extent to which this approach is satisfactory to patients with breast cancer, safe, and potentially effective, which is necessary before larger-scale research or clinical projects. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry ACTRN12621001557820; www.anzctr.org.au/ACTRN12621001557820.aspx. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/53301.

18.
BMJ Open ; 14(7): e078335, 2024 Jul 05.
Artigo em Inglês | MEDLINE | ID: mdl-38969367

RESUMO

BACKGROUND: Patients with advanced non-small-cell lung cancer (NSCLC) with activating mutations in the epidermal growth factor receptor (EGFR) gene are a heterogeneous population who often develop brain metastases (BM). The optimal management of patients with asymptomatic brain metastases is unclear given the activity of newer-generation targeted therapies in the central nervous system. We present a protocol for an individual patient data (IPD) prospective meta-analysis to evaluate whether the addition of stereotactic radiosurgery (SRS) before osimertinib treatment will lead to better control of intracranial metastatic disease. This is a clinically relevant question that will inform practice. METHODS: Randomised controlled trials will be eligible if they include participants with BM arising from EGFR-mutant NSCLC and suitable to receive osimertinib both in the first-line and second-line settings (P); comparisons of SRS followed by osimertinib versus osimertinib alone (I, C) and intracranial disease control included as an endpoint (O). Systematic searches of Medline (Ovid), Embase (Ovid), Cochrane Central Register of Controlled Trials (CENTRAL), CINAHL (EBSCO), PsychInfo, ClinicalTrials.gov and the WHO's International Clinical Trials Registry Platform's Search Portal will be undertaken. An IPD meta-analysis will be performed using methodologies recommended by the Cochrane Collaboration. The primary outcome is intracranial progression-free survival, as determined by response assessment in neuro-oncology-BM criteria. Secondary outcomes include overall survival, time to whole brain radiotherapy, quality of life, and adverse events of special interest. Effect differences will be explored among prespecified subgroups. ETHICS AND DISSEMINATION: Approved by each trial's ethics committee. Results will be relevant to clinicians, researchers, policymakers and patients, and will be disseminated via publications, presentations and media releases. PROSPERO REGISTRATION: CRD42022330532.


Assuntos
Acrilamidas , Compostos de Anilina , Neoplasias Encefálicas , Carcinoma Pulmonar de Células não Pequenas , Receptores ErbB , Neoplasias Pulmonares , Radiocirurgia , Revisões Sistemáticas como Assunto , Humanos , Acrilamidas/uso terapêutico , Compostos de Anilina/uso terapêutico , Antineoplásicos/uso terapêutico , Neoplasias Encefálicas/secundário , Neoplasias Encefálicas/genética , Neoplasias Encefálicas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/genética , Carcinoma Pulmonar de Células não Pequenas/secundário , Terapia Combinada , Receptores ErbB/genética , Indóis , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/patologia , Metanálise como Assunto , Mutação , Estudos Prospectivos , Pirimidinas , Radiocirurgia/métodos , Ensaios Clínicos Controlados Aleatórios como Assunto , Projetos de Pesquisa
19.
Int J Lang Commun Disord ; 48(2): 220-39, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23472961

RESUMO

BACKGROUND & AIMS: A recent systematic review of conversation training for communication partners of people with aphasia has shown that it is effective, and improves participation in conversation for people with chronic aphasia. Other research suggests that people with aphasia are better able to learn communication strategies in an environment which closely mirrors that of expected use, and that cognitive flexibility may be a better predictor of response to therapy than severity of language impairment. This study reports results for a single case, one of a case series evaluation of a programme of conversation training for agrammatism that directly involves a person with aphasia (PWA) as well as their communication partner. It explores how a PWA is able to engage with and learn from the therapy, and whether this leads to qualitative change in post-therapy conversation behaviours. METHODS & PROCEDURES: A 55-year-old man with chronic agrammatism and his wife took part in eight weekly sessions of conversation therapy, adapted from Supporting Partners of People With Aphasia in Relationships and Conversation (SPPARC). Language and conversation were assessed before and after therapy, and the couple's views on conversation and disability were elicited. Conversation analysis was used to analyse: (1) pre-therapy conversation patterns, (2) how the PWA engaged and learned during therapy and the forms of facilitation that aided this process, and (3) qualitative change in post-therapy conversation behaviour. OUTCOMES & RESULTS: After therapy, the PWA showed increased insight and acceptance of the use of strategies such as writing and drawing in the face of conversational difficulty. However, use was prompted by his wife and was rarely spontaneous. CONCLUSIONS & IMPLICATIONS: This single case study suggests that conversation training based around an experiential learning process is able to engage a PWA directly in learning about the effects of aphasia on conversation. Key facilitators were self-study via video and experience of practising conversation whilst receiving online feedback from a speech and language therapist. However, increased insight did not automatically change conversation behaviour. Although he better understood the effects of his aphasia on conversations with his wife, learning stopped short of the ultimate goal of the conversation training programme; the spontaneous use of strategies worked on in therapy when faced with conversation breakdown. One explanation may be that limited cognitive flexibility lead to problems with switching from one strategy to another.


Assuntos
Afasia de Broca/terapia , Comunicação , Terapia da Linguagem/métodos , Cognição , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Psicolinguística , Cônjuges , Resultado do Tratamento , Aprendizagem Verbal , Redação
20.
J Youth Adolesc ; 42(12): 1873-83, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23354418

RESUMO

Obesity-related behaviors, such as intake of snacks and sweetened beverages (SSB), are assumed to result from the interplay between environmental factors and adolescents' ability to self-regulate their eating behaviors. The empirical evidence supporting this assumption is missing. This study investigated the relationships between perceptions of at-home and out-of-home food environment (including SSB accessibility, parental, and peers' social pressure to reduce intake of SSB), nutrition self-regulatory strategies (controlling temptations and suppression), and SSB intake. In particular, we hypothesized that these associations would differ across the stages of preadolescence, early and mid-adolescence. Self-reported data were collected from 2,764 adolescents (10-17 years old; 49 % girls) from 24 schools in the Netherlands, Poland, Portugal, and the United Kingdom. Path analysis indicated that direct associations between peers' social influence and SSB intake increased with age. Direct negative associations between at-home and out-of-home accessibility and SSB intake as well as direct positive associations between parental pressure and intake become significantly weaker with age. Accessibility was related negatively to self-regulation, whereas higher social pressure was associated with higher self-regulation. The effects of the environmental factors were mediated by self-regulation. Quantitative and qualitative differences in self-regulation were observed across the stages of adolescence. The associations between the use of self-regulatory strategies and lower SSB intake become significantly stronger with age. In preadolescence, SSB intake was regulated by means of strategies that aimed at direct actions toward tempting food. In contrast, early and mid-adolescents controlled their SSB intake by means of a combination of self-regulatory strategies focusing on direct actions toward tempting food and strategies focusing on changing the psychological meaning of tempting food.


Assuntos
Comportamento do Adolescente/psicologia , Sacarose Alimentar/administração & dosagem , Comportamento Alimentar/psicologia , Controles Informais da Sociedade/métodos , Meio Social , Adolescente , Criança , Feminino , Humanos , Masculino , Grupo Associado , Lanches , Edulcorantes
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