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1.
Metabolites ; 12(5)2022 May 21.
Artículo en Inglés | MEDLINE | ID: mdl-35629969

RESUMEN

Lactate can protect against damage caused by acute brain injuries both in rodents and in human patients. Besides its role as a metabolic support and alleged preferred neuronal fuel in stressful situations, an additional signaling mechanism mediated by the hydroxycarboxylic acid receptor 1 (HCAR1) was proposed to account for lactate's beneficial effects. However, the administration of HCAR1 agonists to mice subjected to middle cerebral artery occlusion (MCAO) at reperfusion did not appear to exert any relevant protective effect. To further evaluate the involvement of HCAR1 in the protection against ischemic damage, we looked at the effect of HCAR1 absence. We subjected wild-type and HCAR1 KO mice to transient MCAO followed by treatment with either vehicle or lactate. In the absence of HCAR1, the ischemic damage inflicted by MCAO was less pronounced, with smaller lesions and a better behavioral outcome than in wild-type mice. The lower susceptibility of HCAR1 KO mice to ischemic injury suggests that lactate-mediated protection is not achieved or enhanced by HCAR1 activation, but rather attributable to its metabolic effects or related to other signaling pathways. Additionally, in light of these results, we would disregard HCAR1 activation as an interesting therapeutic strategy for stroke patients.

2.
Infect Dis Health ; 26(3): 208-213, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-33903074

RESUMEN

BACKGROUND: Healthcare workers (HCW) are exposed to an increased risk of COVID-19 through direct contact with patients and patient environments. We calculated the; seroprevalence of SARS-CoV-2 in HCW at Eastern Health, a tertiary healthcare network in Victoria, and assessed associations with demographics, work location and role. METHODS: A cross-sectional cohort study of HCW at Eastern Health was conducted. Serum was analysed for the presence of antibodies to SARS-CoV-2, and all participants completed; an online survey collecting information on demographics, place of work, role, and exposures; to COVID-19. Seroprevalence was calculated as the proportion participants with SARS-CoV-2; antibodies out of all tested individuals. RESULTS: The crude seroprevalence of SARS-CoV-2 antibodies in this study was 2.17% (16/736). Thirteen of the 16 (81.2%) positive cases had previously been diagnosed with COVID-19 by PCR: the seroprevalence in the group not previously diagnosed with COVID by PCR was 0.42% (3/720). Having direct contact with COVID-19 patients did not increase the likelihood of having positive serology. A prior history of symptoms consistent with COVID-19 was associated with a higher likelihood of having positive serology (OR 17.2, p = 0.006, 95%CI: 2.25-131.55). CONCLUSION: Our calculated seroprevalence of 2.17% is higher than estimated in the general Australian population, but lower than that reported in HCW internationally. The; majority of those with positive serology in our study had previously been diagnosed with COVID-19 by PCR based testing. Seropositivity was not associated with interaction with COVID-19 positive patients, highlighting effective infection prevention and control practices within the workplace.


Asunto(s)
Anticuerpos Antivirales/sangre , COVID-19/sangre , Personal de Salud/estadística & datos numéricos , SARS-CoV-2/inmunología , Adulto , Anciano , COVID-19/epidemiología , Estudios de Cohortes , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , SARS-CoV-2/genética , Estudios Seroepidemiológicos , Atención Terciaria de Salud/estadística & datos numéricos , Victoria/epidemiología , Adulto Joven
3.
Pilot Feasibility Stud ; 6: 109, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32742718

RESUMEN

BACKGROUND: Effective translation of evidence-based research into clinical practice requires assessment of the many factors that can impact implementation success. Research methods that draw on recognised implementation frameworks, such as the Promoting Action Research in Health Services (PARiHS) framework, and that test feasibility to gain information prior to full-scale roll-out, can support a more structured approach to implementation. OBJECTIVE: This paper presents qualitative findings from a feasibility study in one cancer service of an online portal to operationalise a clinical pathway for the screening, assessment and management of anxiety and depression in adult cancer patients. The aim of this study was to explore staff perspectives on the feasibility and acceptance of a range of strategies to support implementation in order to inform the full-scale roll-out. METHODS: Semi-structured interviews were conducted with fifteen hospital staff holding a range of clinical, administrative and managerial roles, and with differing levels of exposure to the pathway. Qualitative data were analysed thematically, and themes were subsequently organised within the constructs of the PARiHS framework. RESULTS: Barriers and facilitators that affected the feasibility of the online portal and implementation strategies were organised across eight key themes: staff perceptions, culture, external influences, attitudes to psychosocial care, intervention fit, familiarity, burden and engagement. These themes mapped to the PARiHS framework's three domains of evidence, context and facilitation. CONCLUSIONS: Implementation success may be threatened by a range of factors related to the real-world context, perceptions of the intervention (evidence) and the process by which it is introduced (facilitation). Feasibility testing of implementation strategies can provide unique insights into issues likely to influence full-scale implementation, allowing for early tailoring and more effective facilitation which may save time, money and effort in the long-term. Use of a determinant implementation framework can assist researchers to synthesise and effectively respond to barriers as they arise. While the current feasibility study related to a specific implementation, strategies such as regular engagement with local stakeholders, and discussion of barriers arising in real-time during early testing is likely to be of benefit to all researchers and clinicians seeking to maximise the likelihood of long-term implementation success.

4.
Front Cell Dev Biol ; 8: 371, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32523952

RESUMEN

Edema is a hallmark of many brain disorders including stroke. During vasogenic edema, blood-brain barrier (BBB) permeability increases, contributing to the entry of plasma proteins followed by water. Caveolae and caveolin-1 (Cav-1) are involved in these BBB permeability changes. The expression of the aquaporin-4 (AQP4) water channel relates to brain swelling, however, its regulation is poorly understood. Here we tested whether Cav-1 regulates AQP4 expression in the perivascular region after brain ischemia in mice. We showed that Cav-1 knockout mice had enhanced hemispheric swelling and decreased perivascular AQP4 expression in perilesional and contralateral cortical regions compared to wild-type. Glial fibrillary acidic protein-positive astrocytes displayed less branching and ramification in Cav-1 knockout mice compared to wild-type animals. There was a positive correlation between the area of perivascular AQP4-immunolabelling and branch length of Glial fibrillary acidic protein-positive astrocytes in wild-type mice, not seen in Cav-1 knockout mice. In summary, we show for the first time that loss of Cav-1 results in decreased AQP4 expression and impaired perivascular AQP4 covering after cerebral ischemia associated with altered reactive astrocyte morphology and enhanced brain swelling. Therapeutic approaches targeting Cav-1 may provide new opportunities for improving stroke outcome. SIGNIFICANCE STATEMENT: Severe brain edema worsens outcome in stroke patients. Available treatments for stroke-related edema are not efficient and molecular and cellular mechanisms are poorly understood. Cellular water channels, aquaporins (AQPs), are mainly expressed in astrocytes in the brain and play a key role in water movements and cerebral edema, while endothelial caveolins have been suggested to play a role in vasogenic edema. Here we used an integrative approach to study possible interaction between AQP4 and caveolin-1 (Cav-1) after stroke. Absence of Cav-1 was associated with perivascular changes in AQP4 expression and enhanced brain swelling at 3 days after cerebral ischemia. The present work indicates a direct or indirect effect of Cav-1 on perivascular AQP4, which may lead to novel edema therapy.

5.
Br J Cancer ; 123(2): 268-274, 2020 07.
Artículo en Inglés | MEDLINE | ID: mdl-32393849

RESUMEN

BACKGROUND: Women with a BRCA1 or BRCA2 mutation have high lifetime risks of developing breast and ovarian cancers. We sought to estimate the prevalence of cancer-related distress and to identify predictors of distress in an international sample of unaffected women with a BRCA mutation. METHODS: Women with a BRCA1/2 mutation and no previous cancer diagnosis were recruited from the United States, Canada, the United Kingdom, Australia and from a national advocacy group. Using an online survey, we asked about cancer risk reduction options and screening, and we measured cancer-related distress using the Impact of Event Scale. RESULTS: Among 576 respondents, mean age was 40.8 years (SD = 8.1). On average 4.9 years after a positive test result, 16.3% of women reported moderate-to-severe cancer-related distress. Women who had undergone risk-reducing breast and ovarian surgery were less likely to have (moderate or severe) cancer-related distress compared to other women (22.0% versus 11.4%, P value = 0.007). Women recruited from the advocacy group were more likely to have cancer-related distress than other women (21.6% versus 5.3%, P value = 0.002). CONCLUSIONS: Approximately 16% of women with a BRCA1 or BRCA2 mutation experience distress levels comparable to those of women after a cancer diagnosis. Distress was lower for women who had risk-reducing surgery.


Asunto(s)
Proteína BRCA1/genética , Proteína BRCA2/genética , Neoplasias de la Mama/psicología , Neoplasias Ováricas/psicología , Distrés Psicológico , Adulto , Australia , Neoplasias de la Mama/epidemiología , Neoplasias de la Mama/genética , Neoplasias de la Mama/cirugía , Canadá , Femenino , Pruebas Genéticas , Heterocigoto , Humanos , Persona de Mediana Edad , Mutación/genética , Neoplasias Ováricas/epidemiología , Neoplasias Ováricas/genética , Neoplasias Ováricas/cirugía , Factores de Riesgo , Reino Unido
6.
Front Public Health ; 7: 293, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31681724

RESUMEN

Objective and Study Setting: Research efforts to identify factors that influence successful implementation are growing. This paper describes methods of defining and measuring outcomes of implementation success, using a cluster randomized controlled trial with 12 cancer services in Australia comparing the effectiveness of implementation strategies to support adherence to the Australian Clinical Pathway for the Screening, Assessment and Management of Anxiety and Depression in Adult Cancer Patients (ADAPT CP). Study Design and Methods: Using the StaRI guidelines, a process evaluation was planned to explore participant experience of the ADAPT CP, resources and implementation strategies according to the Implementation Outcomes Framework. This study focused on identifying measurable outcome criteria, prior to data collection for the trial, which is currently in progress. Principal Findings: We translated each implementation outcome into clearly defined and measurable criteria, noting whether each addressed the ADAPT CP, resources or implementation strategies, or a combination of the three. A consensus process defined measures for the primary outcome (adherence) and secondary (implementation) outcomes; this process included literature review, discussion and clear measurement parameters. Based on our experience, we present an approach that could be used as a guide for other researchers and clinicians seeking to define success in their work. Conclusions: Defining and operationalizing success in real-world implementation yields a range of methodological challenges and complexities that may be overcome by iterative review and engagement with end users. A clear understanding of how outcomes are defined and measured, based on a strong theoretical framework, is crucial to meaningful measurement and outcomes. The conceptual approach described in this article could be generalized for use in other studies. Trial Registration: The ADAPT Program to support the management of anxiety and depression in adult cancer patients: a cluster randomized trial to evaluate different implementation strategies of the Clinical Pathway for Screening, Assessment and Management of Anxiety and Depression in Adult Cancer Patients was prospectively registered with the Australian New Zealand Clinical Trials Registry Registration Number: ACTRN12617000411347.

7.
Palliat Support Care ; 17(5): 507-514, 2019 10.
Artículo en Inglés | MEDLINE | ID: mdl-30767818

RESUMEN

CONTEXT: The short-term impact of prolonged grief disorder (PGD) following bereavement is well documented. The longer term sequelae of PGD however are poorly understood, possibly unrecognized, and may be incorrectly attributed to other mental health disorders and hence undertreated. OBJECTIVES: The aims of this study were to prospectively evaluate the prevalence of PGD three years post bereavement and to examine the predictors of long-term PGD in a population-based cohort of bereaved cancer caregivers. METHODS: A cohort of primary family caregivers of patients admitted to one of three palliative care services in Melbourne, Australia, participated in the study (n = 301). Sociodemographic, mental health, and bereavement-related data were collected from the caregiver upon the patient's admission to palliative care (T1). Further data addressing circumstances around the death and psychological health were collected at six (T2, n = 167), 13 (T3, n = 143), and 37 months (T4, n = 85) after bereavement. RESULTS: At T4, 5% and 14% of bereaved caregivers met criteria for PGD and subthreshold PGD, respectively. Applying the total PGD score at T4, linear regression analysis found preloss anticipatory grief measured at T1 and self-reported coping measured at T2 were highly statistically significant predictors (both p < 0.0001) of PGD in the longer term. CONCLUSION: For almost 20% of caregivers, the symptoms of PGD appear to persist at least three years post bereavement. These findings support the importance of screening caregivers upon the patient's admission to palliative care and at six months after bereavement to ascertain their current mental health. Ideally, caregivers at risk of developing PGD can be identified and treated before PGD becomes entrenched.


Asunto(s)
Cuidadores/psicología , Pesar , Cuidados Paliativos al Final de la Vida/métodos , Neoplasias/complicaciones , Adaptación Psicológica , Adulto , Anciano , Cuidadores/estadística & datos numéricos , Estudios de Cohortes , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neoplasias/mortalidad , Neoplasias/psicología , Prevalencia , Psicometría/instrumentación , Psicometría/métodos , Victoria
8.
Sci Rep ; 9(1): 507, 2019 01 24.
Artículo en Inglés | MEDLINE | ID: mdl-30679481

RESUMEN

After ischemic stroke, in the lesion core as well as in the ischemic penumbra, evolution of tissue damage and repair is strongly affected by neuroinflammatory events that involve activation of local specialized glial cells, release of inflammatory mediators, recruiting of systemic cells and vascular remodelling. To take advantage of this intricate response in the quest to devise new protective therapeutic strategies we need a better understanding of the territorial and temporal interplay between stroke-triggered inflammatory and cell death-inducing processes in both parenchymal and vascular brain cells. Our goal is to describe structural rearrangements and functional modifications occurring in glial and vascular cells early after an acute ischemic stroke. Low and high scale mapping of the glial activation on brain sections of mice subjected to 30 minutes middle cerebral artery occlusion (MCAO) was correlated with that of the neuronal cell death, with markers for microvascular changes and with markers for pro-inflammatory (IL-1ß) and reparative (TGFß1) cytokines. Our results illustrate a time-course of the neuroinflammatory response starting at early time-points (1 h) and up to one week after MCAO injury in mice, with an accurate spatial distribution of the observed phenomena.


Asunto(s)
Encéfalo , Mediadores de Inflamación/metabolismo , Accidente Cerebrovascular , Remodelación Vascular , Animales , Encéfalo/irrigación sanguínea , Encéfalo/metabolismo , Encéfalo/patología , Encéfalo/fisiopatología , Muerte Celular , Modelos Animales de Enfermedad , Humanos , Inflamación/metabolismo , Inflamación/patología , Inflamación/fisiopatología , Interleucina-1beta/metabolismo , Masculino , Ratones , Neuroglía/metabolismo , Neuroglía/patología , Neuronas/metabolismo , Neuronas/patología , Accidente Cerebrovascular/metabolismo , Accidente Cerebrovascular/patología , Accidente Cerebrovascular/fisiopatología , Factor de Crecimiento Transformador beta1/metabolismo
9.
BMC Cancer ; 18(1): 1077, 2018 Nov 07.
Artículo en Inglés | MEDLINE | ID: mdl-30404619

RESUMEN

BACKGROUND: Health service change is difficult to achieve. One strategy to facilitate such change is the clinical pathway, a guide for clinicians containing a defined set of evidence-based interventions for a specific condition. However, optimal strategies for implementing clinical pathways are not well understood. Building on a strong evidence-base, the Psycho-Oncology Co-operative Research Group (PoCoG) in Australia developed an evidence and consensus-based clinical pathway for screening, assessing and managing cancer-related anxiety and depression (ADAPT CP) and web-based resources to support it - staff training, patient education, cognitive-behavioural therapy and a management system (ADAPT Portal). The ADAPT Portal manages patient screening and prompts staff to follow the recommendations of the ADAPT CP. This study compares the clinical and cost effectiveness of two implementation strategies (varying in resource intensiveness), designed to encourage adherence to the ADAPT CP over a 12-month period. METHODS: This cluster randomised controlled trial will recruit 12 cancer service sites, stratified by size (large versus small), and randomised at site level to a standard (Core) versus supported (Enhanced) implementation strategy. After a 3-month period of site engagement, staff training and site tailoring of the ADAPT CP and Portal, each site will "Go-live", implementing the ADAPT CP for 12 months. During the implementation phase, all eligible patients will be introduced to the ADAPT CP as routine care. Patient participants will be registered on the ADAPT Portal to complete screening for anxiety and depression. Staff will be responsible for responding to prompts to follow the ADAPT CP. The primary outcome will be adherence to the ADAPT CP. Secondary outcomes include staff attitudes to and experiences of following the ADAPT CP, using the ADAPT Portal and being exposed to ADAPT implementation strategies, collected using quantitative and qualitative methods. Data will be collected at T0 (baseline, after site engagement), T1 (6 months post Go-live) and T2 (12 months post Go-live). DISCUSSION: This will be the first cluster randomised trial to establish optimal levels of implementation effort and associated costs to achieve successful uptake of a clinical pathway within cancer care. TRIAL REGISTRATION: The study was registered prospectively with the ANZCTR on 22/3/2017. Trial ID ACTRN12617000411347.


Asunto(s)
Ansiedad/diagnóstico , Ansiedad/etiología , Ansiedad/terapia , Protocolos Clínicos , Depresión/diagnóstico , Depresión/etiología , Depresión/terapia , Neoplasias/complicaciones , Cooperación del Paciente , Manejo de la Enfermedad , Humanos , Proyectos de Investigación
10.
Eur J Cancer Care (Engl) ; 27(5): e12893, 2018 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-30016004

RESUMEN

Prevalence of clinical anxiety among patients with cancer is higher than the general population. Clinical anxiety in people with other medical conditions is associated with greater healthcare resource use and costs. This scoping review describes the evidence relating to costs associated with clinical anxiety in cancer populations. We conducted searches of online databases Medline, Embase, Cinahl, National Health Service Economic Evaluation Database (NHS-EED) and Cochrane Library of systematic reviews to identify studies published between 2006 and 2017 that included healthcare cost in terms of monetary or health service utilisation variables. Of 411 records screened, six studies met inclusion criteria. Only one study used formal diagnostic criteria to identify clinical anxiety. The healthcare system perspective was most common, with direct costs such as medications, hospital visits, type of therapy and use of mental health services reported. All studies found anxiety was related to increased costs/resource use; however, methodological differences mean specific costs and potential impact of interventions on resource use remain relatively unquantified. Despite the prevalence of clinical anxiety, there is little data on the economic impact on health service costs and utilisation. Future studies quantifying the true cost are urgently needed to inform healthcare service planning and delivery, and quality improvement initiatives.


Asunto(s)
Trastornos de Ansiedad/economía , Costos de la Atención en Salud/estadística & datos numéricos , Servicios de Salud Mental/economía , Neoplasias/psicología , Trastornos de Ansiedad/etiología , Humanos , Neoplasias/economía
11.
Psychooncology ; 27(9): 2063-2076, 2018 09.
Artículo en Inglés | MEDLINE | ID: mdl-29885258

RESUMEN

OBJECTIVE: The aims of this meta-analysis were to estimate the overall effect size (ES) of psychological interventions on anxiety in patients with cancer and extract sample and intervention characteristics that influence effectiveness. METHODS: PubMed, Scopus, PsycINFO, Embase, Medline, and CINAHL were searched using Medical Subject Heading keywords 'cancer' AND 'anxiety' AND 'psychological intervention' AND 'counselling' AND 'psycho*' AND 'psychotherapy' AND 'psychosocial' AND 'therapy' between January 1993 and June 2017. RESULTS: Seventy-one studies were eligible for the systematic review; among them, 51 studies were included in the meta-analysis calculations. The overall ES was -0.21 (95% confidence interval; -0.30 to -0.13) in favour of the intervention. From subgroup analyses, studies conducted in Asia, enrolling inpatients, focussing on relaxation, of <6-week intervention duration, <30-minute intervention dose per session, and <4 hours of total time of intervention showed moderate ESs ranging from -0.40 to -0.55. Only 2 studies restricted enrolment to prescreened patients with clinically elevated level of anxiety and showed moderate ES of -0.58. CONCLUSIONS: Low psychological distress at baseline and nonevidence-based interventions were the main factors identified for low effectiveness. Screening and assessment to determine clinical levels of anxiety in patients with cancer should be considered in future trials as an inclusion criterion before providing psychological interventions. Systematic review registration: PROSPERO: International Prospective Register of Systematic Reviews: CRD42017056132.


Asunto(s)
Trastornos de Ansiedad/terapia , Ansiedad/terapia , Neoplasias/psicología , Psicoterapia/métodos , Ansiedad/etiología , Trastornos de Ansiedad/etiología , Humanos , Pacientes Internos , Estudios Prospectivos , Psicoterapia de Grupo , Calidad de Vida , Estrés Psicológico/terapia
12.
Psychooncology ; 27(8): 1908-1914, 2018 08.
Artículo en Inglés | MEDLINE | ID: mdl-29677398

RESUMEN

OBJECTIVE: The possible impact of stress on cancer incidence remains controversial. We prospectively evaluated associations between life event stressors, social support, personality characteristics (optimism, anger control, antiemotionality), and risk of developing primary breast cancer (BCa), in women at increased familial risk of BCa. METHODS: A prospective cohort, repeated measures design was used. Recruitment was through the Kathleen Cuningham Foundation Consortium for Research into Familial Breast Cancer, which collects genetic, epidemiological, and clinical data from Australasian families with multiple BCa cases. Acute and chronic stressors for the prior 3 years and psychosocial, clinical, and epidemiological variables were measured at cohort entry and at 3-yearly intervals. Cox proportional hazard regression analysis controlling for BCa risk factors and familial clustering was undertaken. The primary outcome was histopathologically confirmed BCa (invasive or ductal carcinoma in situ, including occult cases diagnosed during risk-reducing mastectomy). RESULTS: Of 3595 consecutive women invited to participate, 3054 (85.0%) consented. Of these, 2739 (89.7%) from 990 families (range 1-16 per family) completed at least 1 assessment point. During the study, 103 women were diagnosed with BCa. No stressor or psychosocial variable or interaction between them was significantly associated with BCa in unadjusted or adjusted models (total acute stressors HR = 1.03 [0.99-1.08], P = .19; total chronic stressors HR = 1.0 [0.90-1.11], P = .98). CONCLUSIONS: This study did not demonstrate an association between acute and chronic stressors, social support, optimism, antiemotionality or anger control, and BCa risk. Women should focus on proven methods of BCa risk reduction.


Asunto(s)
Neoplasias de la Mama/etiología , Emociones , Optimismo , Personalidad , Apoyo Social , Estrés Psicológico/complicaciones , Adulto , Anciano , Femenino , Humanos , Persona de Mediana Edad , Estudios Prospectivos
13.
Psychooncology ; 27(4): 1162-1171, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-29377335

RESUMEN

OBJECTIVES: While mindfulness-based stress reduction (MBSR) and mindfulness-based cognitive therapy (MBCT) have demonstrated efficacy in clinical populations, the potential therapeutic benefit of mindfulness in the context of cancer is less clear. The aim of this review was to critically appraise mindfulness intervention reporting and study methodology. METHODS: Studies using randomized control trial design and/or a control arm were included. PubMed, Medline, PsycINFO, CINAHL, and Embase databases between January 1999 and April 2017 were searched. Studies were assessed on (1) reported theoretical framework, (2) intervention description, and (3) justification of modifications to standardized MBSR/MBCT. The overall quality of study design and research methodology were also assessed. RESULTS: Of 30 studies identified, none adhered to MBSR. Modified versions of MBSR were reported in 19 studies. Five studies reported variants of MBCT, 1 used a combination of MBSR/MBCT, and 5 inadequately documented the intervention/ theoretical framework. Overall, component and timeline modifications were poorly documented and justified. Mean intervention contact time was less than standardized MBSR/MBCT protocols. Target outcomes were poorly justified, and 12 studies failed to identify a primary aim, reporting multiple outcomes. Only 9 of 15 studies recruiting clinical populations included clinical cutoffs, and an active therapeutic control was included in 4 studies. CONCLUSIONS: Mindfulness is increasingly considered a standard therapy in psycho-oncology. While many studies proclaim benefits, considerable variability, modification to standardized protocols, and claims of benefit often reflect decreases in sub-clinical supportive care symptomology rather than therapeutic relief of clinically significant psychological disorders.


Asunto(s)
Terapia Cognitivo-Conductual/métodos , Atención Plena/métodos , Neoplasias/psicología , Estrés Psicológico/psicología , Ensayos Clínicos como Asunto , Femenino , Humanos , Masculino , Trastornos Mentales , Neoplasias/terapia , Proyectos de Investigación , Estrés Psicológico/terapia
14.
Support Care Cancer ; 26(2): 625-634, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-28929323

RESUMEN

PURPOSE: Cancer patients are often prescribed antidepressants, but little data is available about whether the type and dose are similar to prescriptions to patients with other chronic diseases. This study compared the prescription practices of antidepressants to cancer and non-cancer inpatients at a major Australian tertiary hospital and assessed side effects and potential drug-drug interactions. METHODS: Inpatients diagnosed with cancer within the past 12 months and prescribed antidepressants were age and gender matched to inpatients with other chronic disease conditions. Data from 75 cancer and 75 non-cancer inpatients were extracted. RESULTS: Antidepressants were prescribed to cancer and non-cancer patients, respectively, for the treatment of depression (n = 50 vs n = 59), other mental health problems (n = 8 vs n = 11, p < 0.67) or unspecified reasons (n = 17 vs n = 5, p < 0.02). Mirtazapine (n = 11/75) was most commonly prescribed to cancer patients followed by duloxetine (n = 9/75). Desvenlafaxine (n = 15/75) was prescribed most commonly to non-cancer inpatients, followed by mirtazapine (n = 11/75). Four cancer patients and three non-cancer patients had documented adverse side effects from antidepressants. About one-third of cancer patients (n = 23/75) and about a quarter of non-cancer patients (n = 18/75) were prescribed other medicines with the potential for drug-drug interactions with antidepressants. CONCLUSIONS: Antidepressants were prescribed for a range of indications in all patients, but more commonly for unspecified reasons among the cancer patients. Future prospective studies that monitor antidepressant prescribing to cancer patients should ascertain details of the indication, pathways to prescription and differences in type, dose or schedule depending on prescribing medical practitioner.


Asunto(s)
Antidepresivos/uso terapéutico , Australia , Estudios de Casos y Controles , Cálculo de Dosificación de Drogas , Femenino , Humanos , Pacientes Internos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Estudios Retrospectivos , Centros de Atención Terciaria
15.
J Neurosci Res ; 96(2): 194-206, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-28419510

RESUMEN

Here we assess the potential functional role of increased aquaporin 9 (APQ9) in astrocytes. Increased AQP9 expression was achieved in primary astrocyte cultures by transfection of a plasmid-containing green fluorescent protein fused to either wild-type or mutated human AQP9. Increased AQP9 expression and phosphorylation at Ser222 were associated with a significant change in astrocyte morphology, mainly with a higher number of processes. Similar phenotypic changes are observed in astrogliosis processes after injury. In parallel, we observed that in vivo, thrombin preconditioning before ischemic stroke induced an early increase in AQP9 expression in the male mouse brain. This increased AQP9 expression was also associated with astrocyte morphological changes, especially in the white matter tract. Astrocyte reactivity is debated as being either beneficial or deleterious. As thrombin preconditioning leads to a decrease in lesion size after stroke, our data suggest that the early increase in AQP9 concomitant with astrocyte reactivity leads to a beneficial effect. © 2017 Wiley Periodicals, Inc.


Asunto(s)
Acuaporinas/metabolismo , Astrocitos/metabolismo , Regulación de la Expresión Génica/fisiología , Gliosis/patología , Animales , Acuaporina 4/metabolismo , Acuaporinas/genética , Células Cultivadas , Modelos Animales de Enfermedad , Embrión de Mamíferos , Proteína Ácida Fibrilar de la Glía/metabolismo , Gliosis/etiología , Proteínas Fluorescentes Verdes/genética , Proteínas Fluorescentes Verdes/metabolismo , Infarto de la Arteria Cerebral Media/complicaciones , Infarto de la Arteria Cerebral Media/patología , Ratones , Ratones Endogámicos BALB C , Fosforilación/fisiología , ARN Mensajero/metabolismo , Serina/metabolismo , Transfección
16.
Breast Cancer Res Treat ; 165(2): 433-444, 2017 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-28624978

RESUMEN

PURPOSE: Unaffected women who carry BRCA1 or BRCA2 mutations face difficult choices about reducing their breast cancer risk. Understanding their treatment preferences could help us improve patient counseling and inform drug trials. The objective was to explore preferences for various risk-reducing options among women with germline BRCA1/2 mutations using a discrete-choice experiment survey and to compare expressed preferences with actual behaviors. METHODS: A discrete-choice experiment survey was designed wherein women choose between hypothetical treatments to reduce breast cancer risk. The hypothetical treatments were characterized by the extent of breast cancer risk reduction, treatment duration, impact on fertility, hormone levels, risk of uterine cancer, and ease and mode of administration. Data were analyzed using a random-parameters logit model. Women were also asked to express their preference between surgical and chemoprevention options and to report on their actual risk-reduction actions. Women aged 25-55 years with germline BRCA1/2 mutations who were unaffected with breast or ovarian cancer were recruited through research registries at five clinics and a patient advocacy group. RESULTS: Between January 2015 and March 2016, 622 women completed the survey. Breast cancer risk reduction was the most important consideration expressed, followed by maintaining fertility. Among the subset of women who wished to have children in future, the ability to maintain fertility was the most important factor, followed by the extent of risk reduction. Many more women said they would take a chemoprevention drug than had actually taken chemoprevention. CONCLUSIONS: Women with BRCA1/2 mutations indicated strong preferences for breast cancer risk reduction and maintaining fertility. The expressed desire to have a safe chemoprevention drug available to them was not met by current chemoprevention options.


Asunto(s)
Neoplasias de la Mama/epidemiología , Neoplasias de la Mama/genética , Genes BRCA1 , Genes BRCA2 , Heterocigoto , Mutación , Conducta de Reducción del Riesgo , Adulto , Neoplasias de la Mama/prevención & control , Femenino , Estudios de Asociación Genética , Predisposición Genética a la Enfermedad , Mutación de Línea Germinal , Encuestas Epidemiológicas , Humanos , Persona de Mediana Edad , Riesgo , Encuestas y Cuestionarios , Adulto Joven
17.
J Clin Oncol ; 35(2): 217-225, 2017 Jan 10.
Artículo en Inglés | MEDLINE | ID: mdl-28056205

RESUMEN

Purpose Cognitive impairment is reported frequently by cancer survivors. There are no proven treatments. We evaluated a cognitive rehabilitation program (Insight) and compared it with standard care in cancer survivors self-reporting cognitive symptoms. Patients and Methods We recruited adult cancer survivors with a primary malignancy (excluding central nervous system malignancies) who had completed three or more cycles of adjuvant chemotherapy in the previous 6 to 60 months and reported persistent cognitive symptoms. All participants received a 30-minute telephone consultation and were then randomly assigned to the 15-week, home-based intervention or to standard care. Primary outcome was self-reported cognitive function (Functional Assessment of Cancer Therapy Cognitive Function [FACT-COG] perceived cognitive impairment [PCI] subscale): difference between groups after intervention (T2) and 6 months later (T3). Results A total of 242 participants were randomly assigned: median age, 53 years; 95% female. The primary outcome of difference in FACT-COG PCI was significant, with less PCI in the intervention group at T2 ( P < .001). This difference was sustained at T3 ( P < .001). At T2, there was a significant difference in all FACT-COG subscales, favoring the intervention. Neuropsychological results were not significantly different between the groups at T2 or T3. There were significantly lower levels of anxiety/depression and fatigue in the intervention group at T2. There were significant improvements in stress in the intervention group at both time points. There was no significant difference in quality of life between the groups at T2, but the intervention group had better quality of life at T3. Conclusion The intervention, Insight, led to improvements in cognitive symptoms compared with standard care. To our knowledge, this is the first large randomized controlled trial showing an improvement in self-reported cognitive function in cancer survivors, indicating that this intervention is a feasible treatment.


Asunto(s)
Disfunción Cognitiva/inducido químicamente , Disfunción Cognitiva/rehabilitación , Neoplasias/tratamiento farmacológico , Adulto , Anciano , Ansiedad , Depresión , Femenino , Humanos , Entrevistas como Asunto , Masculino , Persona de Mediana Edad , Calidad de Vida
18.
Asia Pac J Clin Oncol ; 13(5): e381-e388, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-27573704

RESUMEN

AIMS: Participant drop out is a major barrier to high-quality patient-reported outcome (PRO) data analysis in cancer research as patients with worsening health are more likely to dropout. To test the hypothesis that ovarian cancer patients with worse PROs would drop out earlier, we examined how patients differed by time of dropout on health-related quality of life (HRQOL), anxiety, depression, optimism and insomnia. METHODS: This analysis included 619 participants, stratified by time of dropout, from the Australian Ovarian Cancer Study - Quality of Life substudy, in which participants completed PRO questionnaires at three-monthly intervals for 21 months. Trends in PROs over time were examined. Pearson correlations examined the relationship between time of dropout and baseline PROs. Multiple linear regression models including age, disease stage and time since diagnosis examined relationships between baseline and final PRO scores, and final PRO scores and dropout group. RESULTS: Participants who dropped out earlier had significantly worse baseline HRQOL (p < 0.0001) and higher depression (p < 0.0001). For all five PROs, final scores were significantly associated with baseline scores (p < 0.0001). Time of dropout was significantly associated with final HRQOL (p = 0.003), anxiety (p = 0.05), depression (p = 0.02) and optimism (p = 0.02) scores. Depression, HRQOL and anxiety worsened at a faster rate overtime in dropouts than study completers. CONCLUSIONS: Poorer HRQOL and higher depression at baseline, and final HRQOL, anxiety, depression and optimism scores were predictive of time of dropout. These results highlight the importance of collecting auxiliary data to inform careful and considered handling of missing PRO data during analysis, interpretation and reporting.


Asunto(s)
Ansiedad/psicología , Depresión/psicología , Neoplasias Ováricas/psicología , Pacientes Desistentes del Tratamiento/psicología , Adulto , Femenino , Humanos , Persona de Mediana Edad , Neoplasias Ováricas/fisiopatología , Calidad de Vida , Encuestas y Cuestionarios
19.
Support Care Cancer ; 24(6): 2627-34, 2016 06.
Artículo en Inglés | MEDLINE | ID: mdl-26732767

RESUMEN

PURPOSE: Women with advanced ovarian cancer generally have a poor prognosis but there is significant variability in survival despite similar disease characteristics and treatment regimens. The aim of this study was to determine whether psychosocial factors predict survival in women with ovarian cancer, controlling for potential confounders. METHODS: The sample comprised 798 women with invasive ovarian cancer recruited into the Australian Ovarian Cancer Study and a subsequent quality of life study. Validated measures of depression, optimism, minimization, helplessness/hopelessness, and social support were completed 3-6 monthly for up to 2 years. Four hundred nineteen women (52.5 %) died over the follow-up period. Associations between time-varying psychosocial variables and survival were tested using adjusted Cox proportional hazard models. RESULTS: There was a significant interaction of psychosocial variables measured prior to first progression and overall survival, with higher optimism (adjusted hazard ratio per 1 standard deviation (HR) = 0.80, 95 % confidence interval (CI) 0.65-0.97), higher minimization (HR = 0.79, CI 0.66-0.94), and lower helplessness/hopelessness (HR = 1.40, CI 1.15-1.71) associated with longer survival. After disease progression, these variables were not associated with survival (optimism HR = 1.10, CI 0.95-1.27; minimization HR = 1.12, CI 0.95-1.31; and helplessness/hopelessness HR = 0.86, CI 0.74-1.00). Depression and social support were not associated with survival. CONCLUSIONS: In women with invasive ovarian cancer, psychosocial variables prior to disease progression appear to impact on overall survival, suggesting a preventive rather than modifying role. Addressing psychosocial responses to cancer and their potential impact on treatment decision-making early in the disease trajectory may benefit survival and quality of life.


Asunto(s)
Optimismo/psicología , Neoplasias Ováricas/mortalidad , Neoplasias Ováricas/psicología , Adulto , Anciano , Australia/epidemiología , Toma de Decisiones , Depresión/psicología , Femenino , Desamparo Adquirido , Esperanza , Humanos , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Calidad de Vida , Apoyo Social
20.
Support Care Cancer ; 24(1): 409-418, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26093976

RESUMEN

BACKGROUND: Immigrants from culturally and linguistically diverse (CALD) backgrounds diagnosed with cancer face multiple challenges with health systems foreign to them. There is scarce understanding about their needs following cancer treatment in the survivorship phase. Unmet needs were examined in immigrant Chinese and Greek cancer survivors in order to assist development of relevant and useful information resources for these CALD groups. METHODS: Qualitative descriptive design was used. Adult cancer survivors, whose native language was Mandarin, Cantonese or Greek, were recruited through ethnic cancer support groups and cancer specialists in two Australian cities. Six focus groups were conducted, two in each native language group. Recorded responses were transcribed, translated into English, and thematically analysed. RESULTS: Thirty-nine CALD cancer survivors participated from Greek (11), Cantonese (14) and Mandarin (14) backgrounds. Thematic findings included as follows: ongoing cancer-related stressors, cancer misunderstandings, coping strategies, 'survivor' seldom reflects self-appraisal, and additional CALD survivorship information needed. Immigrant cancer survivors may prefer 'recovery' to 'survivorship' descriptors and need information similar to Caucasian cancer survivors alongside as follows: resources for navigating health care, financial and community entitlements; caregiver-directed information to enhance their support; explanations about differences in health care approaches between survivors' original and adopted countries; and acknowledgment of survivorship diversity within CALD groups. CONCLUSIONS: Immigrant cancer survivors' additional requirements to native survivors likely reflect challenges in dealing with foreign environments and varied levels of acculturation within group members. Identification of immigrant cancer survivorship issues may support development of targeted resources for promoting survivors' self-care and capacity for finding, choosing, and using existing support options.


Asunto(s)
Neoplasias/psicología , Sobrevivientes/psicología , Adulto , Anciano , Pueblo Asiatico/etnología , Cuidadores , Cultura , Atención a la Salud , Autoevaluación Diagnóstica , Emigrantes e Inmigrantes/psicología , Etnicidad , Grupos Focales , Humanos , Masculino , Persona de Mediana Edad , Neoplasias/etnología , Nueva Gales del Sur/etnología , Educación del Paciente como Asunto , Investigación Cualitativa , Autocuidado , Victoria/etnología , Población Blanca/etnología
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