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A Repurposing Programme Evaluating Transdermal Oestradiol Patches for the Treatment of Prostate Cancer Within the PATCH and STAMPEDE Trials: Current Results and Adapting Trial Design. Clin Oncol (R Coll Radiol) 2024; 36:e11-e19. [PMID: 37973477 DOI: 10.1016/j.clon.2023.10.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 10/31/2023] [Indexed: 11/19/2023]
Abstract
AIMS Androgen deprivation therapy (ADT), usually achieved with luteinising hormone releasing hormone analogues (LHRHa), is central to prostate cancer management. LHRHa reduce both testosterone and oestrogen and are associated with significant long-term toxicity. Previous use of oral oestrogens as ADT was curtailed because of cardiovascular toxicity. Transdermal oestrogen (tE2) patches are a potential alternative ADT, supressing testosterone without the associated oestrogen-depletion toxicities (osteoporosis, hot flushes, metabolic abnormalities) and avoiding cardiovascular toxicity, and we here describe their evaluation in men with prostate cancer. MATERIALS AND METHODS The PATCH (NCT00303784) adaptive trials programme (incorporating recruitment through the STAMPEDE [NCT00268476] platform) is evaluating the safety and efficacy of tE2 patches as ADT for men with prostate cancer. An initial randomised (LHRHa versus tE2) phase II study (n = 251) with cardiovascular toxicity as the primary outcome measure has expanded into a phase III evaluation. Those with locally advanced (M0) or metastatic (M1) prostate cancer are eligible. To reflect changes in both management and prognosis, the PATCH programme is now evaluating these cohorts separately. RESULTS Recruitment is complete, with 1362 and 1128 in the M0 and M1 cohorts, respectively. Rates of androgen suppression with tE2 were equivalent to LHRHa, with improved metabolic parameters, quality of life and bone health indices (mean absolute change in lumbar spine bone mineral density of -3.0% for LHRHa and +7.9% for tE2 with an estimated difference between arms of 9.3% (95% confidence interval 5.3-13.4). Importantly, rates of cardiovascular events were not significantly different between the two arms and the time to first cardiovascular event did not differ between treatment groups (hazard ratio 1.11, 95% confidence interval 0.80-1.53; P = 0.54). Oncological outcomes are awaited. FUTURE Efficacy results for the M0 cohort (primary outcome measure metastases-free survival) are expected in the final quarter of 2023. For M1 patients (primary outcome measure - overall survival), analysis using restricted mean survival time is being explored. Allied translational work on longitudinal samples is underway.
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1772P Characterisation of a DNA repair deficiency (DRD) biomarker phenotype in metastatic urothelial carcinoma (mUC) within the ATLANTIS clinical trial platform. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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P-187 Post-thaw embryo quality is not predictive of live birth rates in frozen embryo transfer cycles: a retrospective cohort study. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
To determine whether post-thaw change in embryo quality is associated with live birth outcomes.
Summary answer
Post-thaw embryo morphology is not predictive of live birth rates in single frozen embryo transfer cycles.
What is known already
Embryo quality is typically evaluated via morphological assessment of embryos based on the Gardner criteria. For medical or elective reasons, embryos are commonly frozen for future use through the vitrification process. Research has shown that embryo quality pre-vitrification correlates highly with freeze-thaw survival, implantation, pregnancy, and subsequent live birth rates. Good-quality embryos are therefore more likely to be selected for vitrification. However, it is not unusual to find a decline in the quality of these vitrified embryos upon thawing them for embryo transfer.
Study design, size, duration
We retrospectively identified a patient cohort based out of the Ottawa Fertility Centre in Ottawa, Ontario, Canada, between 2016 and 2020.
Participants/materials, setting, methods
Frozen single embryo transfer (FET) cycles involving good-quality expanded blastocysts deriving from autologous oocytes were selected for inclusion. We compared FET cycles involving good post-thaw embryo quality to those with worsened/poor post-thaw embryo quality. The primary outcome was live birth after FET. Secondary outcomes included rates of positive serum human chorionic gonadotropin, clinical intrauterine pregnancy, miscarriage, and ectopic pregnancy. We fit a multivariate logistic regression model, adjusting for patient and cycle characteristics.
Main results and the role of chance
A total of 962 single FET cycles were analyzed. There were 826 embryos that preserved their pre-vitrification quality post-thaw and 136 embryos that exhibited poorer quality on post-thaw assessment. Baseline characteristics were mostly comparable between the two groups under study. In the multivariate regression model, the adjusted odds of live birth was not significantly different in the group with good post-thaw embryo quality compared to that in the group with worse/poor post-thaw embryo quality (odds ratio [OR] 1.30, 95% confidence interval [CI] 0.86-1.96, p = 0.21). Similarly, no significant associations were found between post-thaw embryo quality and the secondary outcomes of positive BhCG (OR 1.19, 95% CI 0.81-1.75), clinical intrauterine pregnancy (OR 1.29, 95% CI 0.87-1.87), miscarriage (OR 0.97, 95% CI 0.53-1.77), and ectopic pregnancy rates (OR 0.41, 95% CI 0.14-1.24).
Limitations, reasons for caution
Although a multivariate regression model was used to adjust for clinically relevant confounders, there remains the possibility for residual confounding given the observational nature of our study.
Wider implications of the findings
The results of our study suggest that, after adjusting for patient and cycle characteristics, post-thaw embryo quality does not impact live birth outcomes.
Trial registration number
Not applicable
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P-428 Fertility outcomes following treatment of chronic endometritis: a systematic review and meta-analysis. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
To determine if treatment of chronic endometritis (CE) impacts fertility outcomes
Summary answer
Treatment of CE in women with infertility, recurrent pregnancy loss, or recurrent implantation failure, improves live birth outcomes
What is known already
Chronic endometritis is an inflammatory condition that involves plasma cells invading the endometrial stroma. Prevalence of CE is high among patients with recurrent pregnancy loss (RPL), recurrent implantation failure (RIF), and infertility. Proposed treatment strategies include oral antibiotics, intrauterine antibiotic infusion, platelet-rich plasma, and hysteroscopic surgery, among others. Although treatment-associated CE cure rates have been high, few studies have reported on fertility outcomes following treatment of CE. Previously published systematic reviews have also yielded widely conflicting outcomes regarding the impact of CE treatment on fertility outcomes.
Study design, size, duration
We conducted a systematic search of the literature until late December 2021 across the Cochrane, EMBASE, and Medline databases. We used a DerSimonian and Laird random-effects meta-analysis model for the quantitative analysis.
Participants/materials, setting, methods
Clinical trials, prospective and retrospective observational studies that examined the treatment outcomes of CE were included. Study eligibility assessment, data extraction, and risk of bias assessment were independently performed by two reviewers. Comparisons were made between the groups of treated versus untreated CE, treated versus persistent CE, and between specific treatment strategies. Pooled risk ratios (RR) for the impact of CE treatment on outcomes such as live birth, clinical pregnancy, and miscarriage rates were assessed
Main results and the role of chance
Twelve studies totalling 1,539 women were included in our systematic review (3 randomized controlled trials and 9 observational studies), and 5 studies were included in the quantitative meta-analysis. Patients all had confirmed CE and a history of infertility, RPL, or RIF. Cure rates ranged between 37.2-91.8%. Live birth rate in the treated CE group ranged from 27.1-84.6%, from 16.4-44.4% in the non-treated CE group, and from 6.7-30.8% in the persistent CE group. Clinical pregnancy rate in the treated CE group ranged from 29.3-76.3%, from 11.1-30% in the non-treated CE group, and from 20-42.3% in the persistent CE group. Miscarriage rate in the treated CE group ranged from 6.7-23.8%, from 35.7-55.6% in the non-treated CE group, and from 27.3-66.7% in the persistent CE group. Risk ratio for the pooled effect of successful CE treatment compared to persistent CE on live birth was 2.98 (95% confidence ratio [CI] 1.51-5.91, I2=36.8%), on clinical pregnancy rate was 2.25 (95% CI 1.59-3.18, I2=40.1%), and on miscarriage rate was 0.55 (95% CI 0.28-1.10, I2=0.0%). Insufficient studies compared specific treatment subtypes to allow for any substantive qualitative or quantitative analysis.
Limitations, reasons for caution
Our results are limited by significant between-study heterogeneity in the study design, patient population, and comparisons used. Subgroup analysis by categories of comparisons mitigates some of this heterogeneity
Wider implications of the findings
Adequate treatment of CE significantly improves live birth rates in patients with RPL, RIF, and infertility. Assessment for CE should become part of routine fertility investigations, and resolution of CE must be confirmed prior to initiating fertility treatments.
Trial registration number
not applicable
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P-748 Cesarean scar defect does not predict embryo transfer outcomes: A retrospective cohort study. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
Is the presence of a cesarean scar defect associated with live birth outcomes at the time of embryo transfer?
Summary answer
The presence of a cesarean scar defect is not predictive of live birth rates at the time of embryo transfer.
What is known already
Cesarean delivery is associated with subsequent impaired fertility, with lower pregnancy and live birth rates and longer inter-pregnancy intervals, compared to patients who delivered vaginally. Studies exploring pregnancy rates after IVF and embryo transfer also suggest lower pregnancy rates among patients with prior cesarean delivery. A postulated mechanism by which a prior cesarean delivery may impact fertility is the cesarean scar defect, and prior studies have shown a possible association between a scar defect and suboptimal outcomes.
Study design, size, duration
We retrospectively identified a patient cohort based out of the Ottawa Fertility Centre in Ottawa, Ontario, Canada, between 2013 and 2019.
Participants/materials, setting, methods
This retrospective cohort study included 317 patients with a prior cesarean delivery. Embryo transfer outcomes compared between the two groups based on the finding of a cesarean scar defect. The primary outcome was live birth rate, secondary outcomes of positive hCG, clinical intrauterine pregnancy, miscarriage rate. We fit a multivariate log binomial regression model with a priori variables for the primary and secondary outcomes, adjusting for patient and cycle characteristics.
Main results and the role of chance
There was no statistically significant difference in live birth rate among patients with a cesarean scar defect compared to those without, 28.0% vs 29.5% respectively (adjusted RR 0.95, 95% CI 0.68-1.35). There was no statistically significant difference in any of the secondary outcomes. Area of the defect and subgroup analysis of fresh vs frozen embryo transfer did not demonstrate any difference. Secondary analysis of patients with retroverted uterus had significantly lower live birth rates compared to those with an anteverted uterus, 17.7% vs 32.4%, respectively (adjusted RR 0.56, 95% CI 0.34-0.91).
Limitations, reasons for caution
Although a multivariate log binomial model was used to adjust for clinically relevant confounders, there remains the possibility for residual confounding given the observational nature of our study.
Wider implications of the findings
The results of our study suggest that, after adjusting for patient and cycle characteristics, the presence of a cesarean scar defect may not impact live birth outcomes and secondary analysis of the impact of uterine retroversion requires more study.
Trial registration number
Not applicable
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226 Emergency Department Hyperoxia Exposure and Mortality. Ann Emerg Med 2020. [DOI: 10.1016/j.annemergmed.2020.09.239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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116 Associations of Emergency Department Sedation and Analgesia and Hospital Outcomes in Mechanically Ventilated Patients. Ann Emerg Med 2020. [DOI: 10.1016/j.annemergmed.2020.09.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Corrigendum to Addition of docetaxel to hormonal therapy in low- and high-burden metastatic hormone sensitive prostate cancer: long-term survival results from the STAMPEDE trial: Ann Oncol 2019; 30: 1992-2003. Ann Oncol 2020; 31:442. [PMID: 32067690 PMCID: PMC8929236 DOI: 10.1016/j.annonc.2020.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Addition of docetaxel to hormonal therapy in low- and high-burden metastatic hormone sensitive prostate cancer: long-term survival results from the STAMPEDE trial. Ann Oncol 2019; 30:1992-2003. [PMID: 31560068 PMCID: PMC6938598 DOI: 10.1093/annonc/mdz396] [Citation(s) in RCA: 222] [Impact Index Per Article: 44.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND STAMPEDE has previously reported that the use of upfront docetaxel improved overall survival (OS) for metastatic hormone naïve prostate cancer patients starting long-term androgen deprivation therapy. We report on long-term outcomes stratified by metastatic burden for M1 patients. METHODS We randomly allocated patients in 2 : 1 ratio to standard-of-care (SOC; control group) or SOC + docetaxel. Metastatic disease burden was categorised using retrospectively-collected baseline staging scans where available. Analysis used Cox regression models, adjusted for stratification factors, with emphasis on restricted mean survival time where hazards were non-proportional. RESULTS Between 05 October 2005 and 31 March 2013, 1086 M1 patients were randomised to receive SOC (n = 724) or SOC + docetaxel (n = 362). Metastatic burden was assessable for 830/1086 (76%) patients; 362 (44%) had low and 468 (56%) high metastatic burden. Median follow-up was 78.2 months. There were 494 deaths on SOC (41% more than the previous report). There was good evidence of benefit of docetaxel over SOC on OS (HR = 0.81, 95% CI 0.69-0.95, P = 0.009) with no evidence of heterogeneity of docetaxel effect between metastatic burden sub-groups (interaction P = 0.827). Analysis of other outcomes found evidence of benefit for docetaxel over SOC in failure-free survival (HR = 0.66, 95% CI 0.57-0.76, P < 0.001) and progression-free survival (HR = 0.69, 95% CI 0.59-0.81, P < 0.001) with no evidence of heterogeneity of docetaxel effect between metastatic burden sub-groups (interaction P > 0.5 in each case). There was no evidence that docetaxel resulted in late toxicity compared with SOC: after 1 year, G3-5 toxicity was reported for 28% SOC and 27% docetaxel (in patients still on follow-up at 1 year without prior progression). CONCLUSIONS The clinically significant benefit in survival for upfront docetaxel persists at longer follow-up, with no evidence that benefit differed by metastatic burden. We advocate that upfront docetaxel is considered for metastatic hormone naïve prostate cancer patients regardless of metastatic burden.
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Monitoring cognitive change in multiple sclerosis using a computerized cognitive battery. Mult Scler J Exp Transl Clin 2018; 4:2055217318815513. [PMID: 30559973 PMCID: PMC6293367 DOI: 10.1177/2055217318815513] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 10/11/2018] [Accepted: 11/01/2018] [Indexed: 11/15/2022] Open
Abstract
Background Cognitive monitoring that can detect short-term change in multiple sclerosis is challenging. Computerized cognitive batteries such as the CogState Brief Battery can rapidly assess commonly affected cognitive domains. Objectives The purpose of this study was to establish the acceptability and sensitivity of the CogState Brief Battery in multiple sclerosis patients compared to controls. We compared the sensitivity of the CogState Brief Battery to that of the Paced Auditory Serial Addition Test over 12 months. Methods Demographics, Expanded Disability Status Scale scores, depression and anxiety scores were compared with CogState Brief Battery and Paced Auditory Serial Addition Test performances of 51 patients with relapsing-remitting multiple sclerosis, 19 with secondary progressive multiple sclerosis and 40 healthy controls. Longitudinal data in 37 relapsing-remitting multiple sclerosis patients were evaluated using linear mixed models. Results Both the CogState Brief Battery and the Paced Auditory Serial Addition Test discriminated between multiple sclerosis and healthy controls at baseline (p<0.001). CogState Brief Battery tasks were more acceptable and caused less anxiety than the Paced Auditory Serial Addition Test (p<0.001). In relapsing-remitting multiple sclerosis patients, reaction time slowed over 12 months (p<0.001) for the CogState Brief Battery Detection (mean change -34.23 ms) and Identification (-25.31 ms) tasks. Paced Auditory Serial Addition Test scores did not change over this time. Conclusions The CogState Brief Battery is highly acceptable and better able to detect cognitive change than the Paced Auditory Serial Addition Test. The CogState Brief Battery could potentially be used as a practical cognitive monitoring tool in the multiple sclerosis clinic setting.
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Radiotherapy (RT) to the primary tumour for men with newly-diagnosed metastatic prostate cancer (PCa): Survival results from STAMPEDE. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy424.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Adding abiraterone or docetaxel to long-term hormone therapy for prostate cancer: directly randomised data from the STAMPEDE multi-arm, multi-stage platform protocol. Ann Oncol 2018; 29:1235-1248. [PMID: 29529169 PMCID: PMC5961425 DOI: 10.1093/annonc/mdy072] [Citation(s) in RCA: 175] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Background Adding abiraterone acetate with prednisolone (AAP) or docetaxel with prednisolone (DocP) to standard-of-care (SOC) each improved survival in systemic therapy for advanced or metastatic prostate cancer: evaluation of drug efficacy: a multi-arm multi-stage platform randomised controlled protocol recruiting patients with high-risk locally advanced or metastatic PCa starting long-term androgen deprivation therapy (ADT). The protocol provides the only direct, randomised comparative data of SOC + AAP versus SOC + DocP. Method Recruitment to SOC + DocP and SOC + AAP overlapped November 2011 to March 2013. SOC was long-term ADT or, for most non-metastatic cases, ADT for ≥2 years and RT to the primary tumour. Stratified randomisation allocated pts 2 : 1 : 2 to SOC; SOC + docetaxel 75 mg/m2 3-weekly×6 + prednisolone 10 mg daily; or SOC + abiraterone acetate 1000 mg + prednisolone 5 mg daily. AAP duration depended on stage and intent to give radical RT. The primary outcome measure was death from any cause. Analyses used Cox proportional hazards and flexible parametric models, adjusted for stratification factors. This was not a formally powered comparison. A hazard ratio (HR) <1 favours SOC + AAP, and HR > 1 favours SOC + DocP. Results A total of 566 consenting patients were contemporaneously randomised: 189 SOC + DocP and 377 SOC + AAP. The patients, balanced by allocated treatment were: 342 (60%) M1; 429 (76%) Gleason 8-10; 449 (79%) WHO performance status 0; median age 66 years and median PSA 56 ng/ml. With median follow-up 4 years, 149 deaths were reported. For overall survival, HR = 1.16 (95% CI 0.82-1.65); failure-free survival HR = 0.51 (95% CI 0.39-0.67); progression-free survival HR = 0.65 (95% CI 0.48-0.88); metastasis-free survival HR = 0.77 (95% CI 0.57-1.03); prostate cancer-specific survival HR = 1.02 (0.70-1.49); and symptomatic skeletal events HR = 0.83 (95% CI 0.55-1.25). In the safety population, the proportion reporting ≥1 grade 3, 4 or 5 adverse events ever was 36%, 13% and 1% SOC + DocP, and 40%, 7% and 1% SOC + AAP; prevalence 11% at 1 and 2 years on both arms. Relapse treatment patterns varied by arm. Conclusions This direct, randomised comparative analysis of two new treatment standards for hormone-naïve prostate cancer showed no evidence of a difference in overall or prostate cancer-specific survival, nor in other important outcomes such as symptomatic skeletal events. Worst toxicity grade over entire time on trial was similar but comprised different toxicities in line with the known properties of the drugs. Trial registration Clinicaltrials.gov: NCT00268476.
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The determinants and consequences of adult nursing staff turnover: a systematic review of systematic reviews. BMC Health Serv Res 2017; 17:824. [PMID: 29246221 PMCID: PMC5732502 DOI: 10.1186/s12913-017-2707-0] [Citation(s) in RCA: 129] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 11/07/2017] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Nurses leaving their jobs and the profession are an issue of international concern, with supply-demand gaps for nurses reported to be widening. There is a large body of existing literature, much of which is already in review form. In order to advance the usefulness of the literature for nurse and human resource managers, we undertook an overview (review of systematic reviews). The aim of the overview was to identify high quality evidence of the determinants and consequences of turnover in adult nursing. METHODS Reviews were identified which were published between 1990 and January 2015 in English using electronic databases (the Cochrane Database of Systematic Reviews, MEDLINE, EMBASE, Applied Social Sciences Index and Abstracts, CINAHL plus and SCOPUS) and forward searching. All stages of the review were conducted in parallel by two reviewers. Reviews were quality appraised using the Assessment of Multiple Systematic Reviews and their findings narratively synthesised. RESULTS Nine reviews were included. We found that the current evidence is incomplete and has a number of important limitations. However, a body of moderate quality review evidence does exist giving a picture of multiple determinants of turnover in adult nursing, with - at the individual level - nurse stress and dissatisfaction being important factors and -at the organisational level - managerial style and supervisory support factors holding most weight. The consequences of turnover are only described in economic terms, but are considered significant. CONCLUSIONS In making a quality assessment of the review as well as considering the quality of the included primary studies and specificity in the outcomes they measure, the overview found that the evidence is not as definitive as previously presented from individual reviews. Further research is required, of rigorous research design, whether quantitative or qualitative, particularly against the outcome of actual turnover as opposed to intention to leave. TRIAL REGISTRATION PROSPERO Registration 17 March 2015: CRD42015017613 .
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Adding abiraterone for patients (pts) with high-risk prostate cancer (PCa) starting long-term androgen deprivation therapy (ADT): Outcomes in non-metastatic (M0) patients from STAMPEDE (NCT00268476). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx440.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Adding abiraterone acetate plus prednisolone (AAP) or docetaxel for patients (pts) with high-risk prostate cancer (PCa) starting long-term androgen deprivation therapy (ADT): Directly randomised data from STAMPEDE (NCT00268476). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx440.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Interventions to Reduce Adult Nursing Turnover: A Systematic Review of Systematic Reviews. Open Nurs J 2017; 11:108-123. [PMID: 29299084 PMCID: PMC5725565 DOI: 10.2174/1874434601711010108] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/22/2017] [Accepted: 06/08/2017] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Nurse turnover is an issue of concern in health care systems internationally. Understanding which interventions are effective to reduce turnover rates is important to managers and health care organisations. Despite a plethora of reviews of such interventions, strength of evidence is hard to determine. OBJECTIVE We aimed to review literature on interventions to reduce turnover in nurses working in the adult health care services in developed economies. METHOD We conducted an overview (systematic review of systematic reviews) using the Cochrane Database of Systematic Reviews, MEDLINE, EMBASE, Applied Social Sciences Index and Abstracts, CINAHL plus and SCOPUS and forward searching. We included reviews published between 1990 and January 2015 in English. We carried out parallel blinded selection, extraction of data and assessment of bias, using the Assessment of Multiple Systematic Reviews. We carried out a narrative synthesis. RESULTS Despite the large body of published reviews, only seven reviews met the inclusion criteria. These provide moderate quality review evidence, albeit from poorly controlled primary studies. They provide evidence of effect of a small number of interventions which decrease turnover or increase retention of nurses, these being preceptorship of new graduates and leadership for group cohesion. CONCLUSION We highlight that a large body of reviews does not equate with a large body of high quality evidence. Agreement as to the measures and terminology to be used together with well-designed, funded primary research to provide robust evidence for nurse and human resource managers to base their nurse retention strategies on is urgently required.
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30-year trends in overweight, obesity and waist-to-height ratio by socioeconomic status in Australian children, 1985 to 2015. Int J Obes (Lond) 2017; 41:76-82. [PMID: 27847388 PMCID: PMC5220161 DOI: 10.1038/ijo.2016.204] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 09/15/2016] [Accepted: 10/23/2016] [Indexed: 01/25/2023]
Abstract
BACKGROUND/OBJECTIVE To report 30-year (1985-2015) prevalence trends in overweight, obesity and abdominal obesity among children by school level and socioeconomic status (SES). SUBJECTS/METHODS Five cross-sectional, population child surveys (age 4-18 years; n=27 808) conducted in 1985-1997-2004-2010-2015 in New South Wales, Australia. Outcomes were prevalence of measured overweight, obesity and waist-to-height ratio (WHtR⩾0.5) by sex, school level (children (primary) and adolescents (high)) and SES tertile. RESULTS In 2015, the prevalences of overweight, obesity and WHtR⩾0.5 in children were 16.4%, 7.0% and 14.6%, respectively, and in adolescents 21.9%, 17.2% and 4.6%, respectively. Obesity prevalence has not significantly changed in children or adolescents since 1997, nor since 2010 (children, P=0.681; adolescents, P=0.21). Overweight has not significantly changed in children since 1997, but has in adolescents since 1985, with a relative increase of 16 percentage points (P<0.001) between 2010 and 2015. WHtR⩾0.5 prevalence has significantly changed since 1985, except in adolescent girls between 2010 and 2015. Between 2010 and 2015 the relative increase in WHtR⩾0.5 was 17 and 40 percentage points in children and adolescent boys, respectively. Significant disparities in prevalence rates between children and adolescents from low and high SES backgrounds began in 2010 for overweight, since 1997 for obesity and since 2004 for WHtR⩾0.5. Differences between SES groups have become larger over the past 18 years. CONCLUSIONS Since 1997, obesity has remained stable, and overweight has stabilized in children, not in adolescents. WHtR⩾0.5 significantly increased between 1985 and 2015, with prevalence rates at each survey around twice the obesity prevalence. Compared with high SES children and adolescents, the risk of overweight, obesity and WHtR⩾0.5 was significantly higher for low SES children and adolescents. The findings are highly relevant to policy makers involved in child obesity prevention interventions and highlight the need for better targeted interventions among children and adolescents from low SES backgrounds, and adolescents in particular.
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Active body, active brain: Quantifying the role of physical activity in preventing dementia. J Sci Med Sport 2017. [DOI: 10.1016/j.jsams.2017.01.213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Planned Early Discharge After Laparoscopic (PEDAL) Hysterectomy Study: A Pilot Prospective Observational Study. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Retaining nurses in metropolitan areas: insights from senior nurse and human resource managers. J Nurs Manag 2016; 24:1041-1048. [PMID: 27291829 DOI: 10.1111/jonm.12402] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2016] [Indexed: 11/26/2022]
Abstract
AIM To investigate the views of senior nurse and human resource managers of strategies to retain hospital nurses in a metropolitan area. BACKGROUND Against a global shortage, retaining nurses is a management imperative for the quality of hospital services. METHOD Semi-structured interviews, thematically analysed. RESULTS Metropolitan areas have many health organisations in geographical proximity, offering nurses choices in employer and employment. Senior nurse and human resource managers recognised the complexity of factors influencing nurse turnover, including those that 'pulled' nurses out of their jobs to other posts and factors that 'pushed' nurses to leave. Four themes emerged in retaining nurses: strategy and leadership, including analysis of workforce and leavers' data, remuneration, the type of nursing work and career development and the immediate work environment. CONCLUSIONS In contexts where multiple organisations compete for nurses, addressing retention through strategic leadership is likely to be important in paying due attention and apportioning resources to effective strategies. IMPLICATIONS FOR NURSING MANAGEMENT Aside from good human resource management practices for all, strategies tailored to different segments of the nursing workforce are likely to be important. This metropolitan study suggests attention should be paid to strategies that address remuneration, progressing nursing careers and the immediate work environment.
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Student nurse selection and predictability of academic success: The Multiple Mini Interview project. NURSE EDUCATION TODAY 2016; 40:123-127. [PMID: 27125161 DOI: 10.1016/j.nedt.2016.01.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 01/20/2016] [Accepted: 01/30/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND With recent reports of public enquiries into failure to care, universities are under pressure to ensure that candidates selected for undergraduate nursing programmes demonstrate academic potential as well as characteristics and values such as compassion, empathy and integrity. The Multiple Mini Interview (MMI) was used in one university as a way of ensuring that candidates had the appropriate numeracy and literacy skills as well as a range of communication, empathy, decision-making and problem-solving skills as well as ethical insights and integrity, initiative and team-work. OBJECTIVES To ascertain whether there is evidence of bias in MMIs (gender, age, nationality and location of secondary education) and to determine the extent to which the MMI is predictive of academic success in nursing. DESIGN A longitudinal retrospective analysis of student demographics, MMI data and the assessment marks for years 1, 2 and 3. SETTINGS One university in southwest London. PARTICIPANTS One cohort of students who commenced their programme in September 2011, including students in all four fields of nursing (adult, child, mental health and learning disability). METHODS Inferential statistics and a Bayesian Multilevel Model. RESULTS MMI in conjunction with MMI numeracy test and MMI literacy test shows little or no bias in terms of ages, gender, nationality or location of secondary school education. Although MMI in conjunction with numeracy and literacy testing is predictive of academic success, it is only weakly predictive. CONCLUSIONS The MMI used in conjunction with literacy and numeracy testing appears to be a successful technique for selecting candidates for nursing. However, other selection methods such as psychological profiling or testing of emotional intelligence may add to the extent to which selection methods are predictive of academic success on nursing.
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The experiences of student nurses on placements with practice nurses: A pilot study. Nurse Educ Pract 2016; 16:225-34. [DOI: 10.1016/j.nepr.2015.08.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 04/04/2015] [Accepted: 08/11/2015] [Indexed: 10/23/2022]
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Do ergonomic and education interventions reduce prolonged occupational sitting? A randomised controlled trial. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.1663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Students' first year experience of a BSc (Hons) in nursing: a pilot study. NURSE EDUCATION TODAY 2015; 35:256-64. [PMID: 25245661 DOI: 10.1016/j.nedt.2014.08.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 06/03/2014] [Accepted: 08/29/2014] [Indexed: 05/28/2023]
Abstract
BACKGROUND All new nurses in England from 2013 will be educated at the point of registration to the degree level. A study was undertaken into the first-year experience of one cohort on the new degree programme at one university. OBJECTIVES The aim of the study was to evaluate nursing students' experience during the first year of the degree programme in terms of their engagement with the programme, its impact and value and their overall satisfaction. DESIGN A mixed method qualitative and quantitative survey design was used. SETTINGS AND PARTICIPANTS One cohort of students at one university in south west London was studied. In total 96 out of 256 students completed the online survey questionnaire (response rate=37.5%). METHOD Data were collected through an online questionnaire survey comprising Likert-style, demographic and open-ended questions. Data were analysed using SPSS version 19 and through the framework method. FINDINGS Students' responses were largely positive. Areas of concern expressed included assessment timings and juggling personal/family commitments with academic workload. Although some experienced a degree of stress in year 1 the majority indicated that stress was not a problem; some experienced little or no stress at all. Students were positive about the quality of teaching, support received, and their relationships with academic staff. Satisfaction with year 1 was high. A small percentage considered leaving during year 1. Factors that made them stay included personal motivation to succeed, family support and help from academic staff and mentors. Overall attrition rate is low. CONCLUSIONS As nursing in England moves to an all-graduate profession at the point of registration it is timely to evaluate issues like attrition, the students' engagement with their academic and practice experience, the impact on them of their assignments/assessments, stressors, their perceptions of quality, what makes them stay and their overall satisfaction.
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PET imaging demonstrates histone deacetylase target engagement and clarifies brain penetrance of known and novel small molecule inhibitors in rat. ACS Chem Neurosci 2014; 5:1055-62. [PMID: 25188794 PMCID: PMC4198064 DOI: 10.1021/cn500162j] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
![]()
Histone deacetylase (HDAC) enzymes
have been demonstrated as critical
components in maintaining chromatin homeostasis, CNS development,
and normal brain function. Evidence in mouse models links HDAC expression
to learning, memory, and mood-related behaviors; small molecule HDAC
inhibitor tool compounds have been used to demonstrate the importance
of specific HDAC subtypes in modulating CNS-disease-related behaviors
in rodents. So far, no direct evidence exists to understand the quantitative
changes in HDAC target engagement that are necessary to alter biochemistry
and behavior in a living animal. Understanding the relationship between
target engagement and in vivo effect is essential
in refining new ways to alleviate disease. We describe here, using
positron emission tomography (PET) imaging of rat brain, the in vivo target engagement of a subset of class I/IIb HDAC
enzymes implicated in CNS-disease (HDAC subtypes 1, 2, 3, and 6).
We found marked differences in the brain penetrance of tool compounds
from the hydroxamate and benzamide HDAC inhibitor classes and resolved
a novel, highly brain penetrant benzamide, CN147, chronic treatment
with which resulted in an antidepressant-like effect in a rat behavioral
test. Our work highlights a new translational path for understanding
the molecular and behavioral consequences of HDAC target engagement.
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Phenotypic characterisation of canine epileptoid cramping syndrome in the Border terrier. J Small Anim Pract 2013; 55:102-7. [PMID: 24372194 PMCID: PMC4277704 DOI: 10.1111/jsap.12170] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To characterise the phenotype of Border terriers suspected to be affected by canine epileptoid cramping syndrome and to identify possible contributing factors. METHODS Owners of Border terriers with suspected canine epileptoid cramping syndrome were invited to complete an online questionnaire. The results of these responses were collated and analysed. RESULTS Twenty-nine Border terriers were included. Most affected dogs had their first episode before 3 years of age (range: 0·2 to 7·0 years). The majority of episodes lasted between 2 and 30 minutes (range: 0·5 to 150 minutes). The most frequent observations during the episodes were difficulty in walking (27 of 29), mild tremor (21 of 29) and dystonia (22 of 29). Episodes most frequently affected all four limbs (25 of 29) and the head and neck (21 of 29). Borborygmi were reported during episodes in 11 of 29 dogs. Episodes of vomiting and diarrhoea occurred in 14 of 29, with 50% of these being immediately before or after episodes of canine epileptoid cramping syndrome (7 of 14). Most owners (26 of 29) had changed their dog's diet, with approximately 50% (14 of 26) reporting a subsequent reduction in the frequency of episodes. CLINICAL SIGNIFICANCE This study demonstrates similarities in the phenotype of canine epileptoid cramping syndrome to paroxysmal dystonic choreoathetosis, a paroxysmal dyskinesia reported in humans. This disorder appears to be associated with gastrointestinal signs in some dogs and appears at least partially responsive to dietary adjustments.
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Dexrazoxane efficacy for anthracycline extravasation: use in UK clinical practice. Int J Clin Pract 2013; 67:244-9. [PMID: 23409691 DOI: 10.1111/ijcp.12103] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 12/04/2012] [Indexed: 11/30/2022] Open
Abstract
Extravasation is recognised as a major complication of administering intravenous chemotherapy treatment. Of the agents involved in extravasation, anthracyclines are associated with the greatest risk to patients because they are vesicant agents, having the potential to cause blistering and ulceration. If not identified and left untreated, anthracycline extravasation can lead to more serious complications such as tissue necrosis and functional impairment. Dexrazoxane (Savene(®) ) is the only licensed antidote for the treatment of anthracycline extravasation and clinical evidence has shown Savene(®) to be highly effective for preventing the need for surgery following anthracycline extravasation, allowing full recovery in the majority of patients. To date, there have been eight published studies reporting a total of 102 cases of Savene(®) use. Here, we review the published data on the efficacy of Savene(®) and present an analysis of 12 UK case studies. All UK oncology centres where Savene(®) has been used to manage anthracycline extravasation were contacted by SpePharm UK, who requested case studies for this publication. All of the cases received, including two from our own experience of using Savene(®) have been included in the analysis.
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Abstract
Recovery-oriented practice, an approach aligned towards the service user perspective, has dominated the mental health care arena. Numerous studies have explored service users' accounts of the purpose, meaning and importance of 'recovery'; however, far less is known about healthcare staff confidence in its application to care delivery. A self-efficacy questionnaire and content analysis of nursing course documents were used to investigate a cohort of community mental health nurses' recovery-oriented practice and to determine the extent to which the current continuing professional development curriculum met their educational needs in this regard. Twenty-three community mental health nurses completed a self-efficacy questionnaire and 28 course documents were analysed. The findings revealed high levels of nurses' confidence in their understanding and ability to apply the recovery model and low levels of confidence were found in areas of social inclusion. The content analysis found only one course document that used the whole term 'recovery model'. The findings suggest a gap in the nurses' perceived ability and confidence in recovery-oriented practice with what is taught academically. Hence, nursing education needs to be more explicitly focused on the recovery model and its application to care delivery.
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‘PREMM 1,2,6 MODEL’ as a new gene specific prediction model for Lynch Syndrome: retrospective review of mutation positive cases. Hered Cancer Clin Pract 2012. [PMCID: PMC3327294 DOI: 10.1186/1897-4287-10-s2-a67] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Abstract
ABSTRACTWe have recently developed a method to perform Density Functional Theory calculations in systems with a very large number of atoms, which is based on the use of numerical atomic orbitals as basis sets. The method incorporates Order-N techniques both in the calculation of the Kohn-Sham hamiltonian matrix elements and in the solution of the wave functions, which make the CPU time and memory to scale linearly with the number of atoms, allowing calculations in very large system. In this work, we present results on several test systems to show that the approach and the basis sets used with our method are able to provide an accuracy similar to that of other standard DFT techniques.
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Potential Energy Surfaces. EPJ WEB OF CONFERENCES 2011. [DOI: 10.1051/epjconf/20111402002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Simulation of the Thermodynamics of surfaces and interfaces. EPJ WEB OF CONFERENCES 2011. [DOI: 10.1051/epjconf/20111404001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract P3-12-11: Combining Genotype at Low Penetrance Breast Cancer Loci with Family History Risk Leads to Significant Risk Reclassification. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p3-12-11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: A significant proportion of women are at increased genetic risk of breast cancer. Mutations in high penetrance genes such as BRCA1 and BRCA2 are only responsible in the minority of cases, with low penetrance polymorphisms in other genes expected to account for the majority of the remaining genetic risk. An increasing number of such low penetrance polymorphisms are being identified, but each polymorphism only contributes a small amount to overall risk. Currently, in clinical practice, women who are at increased risk of breast cancer are identified by their family history, and the role of genetic testing for multifactorial risk remains uncertain. We have taken the population frequency and genotype relative risk information for the 18 most established low penetrance breast cancer risk loci and explored the effect of combining information from these loci, with risk derived from family history. Results: Genotyping at these 18 loci could provide significant risk information for an individual. The top 1% of women in the genotype risk distribution would have a risk of breast cancer of 2.11 times the general population. At this level of risk, they would qualify for breast cancer screening from age 40 according to evidence based guidelines issued by the UK National Institute of Clinical Excellence (NICE). In addition, the top 5% of the population are at 1.67 times risk of breast cancer and would have the same risk at age 40 as a 50 year old at population risk who would qualify for breast screening according to UK and US National Screening Guidelines. To investigate whether low penetrance genotype has greater potential if combined with other risk factors, we used a simple multiplicative model to combine family history risk of cancer derived using BOADICEA with genotype information. Our data suggest that genotype would result in a significant reclassification of individual risk. For example, 10% of women who only had a sister affected with breast cancer at 55 would qualify for additional screening under NICE criteria if genotype were taken into account. Extending this approach with 160 complex family histories from the Tayside family history breast clinic, we have shown that genotyping could result in reclassification and change of management for 19.1% of women being assessed in this clinic, with 12.4% of women moving into a higher risk category, and 6.7% of women moving into a lower category. Discussion: These data suggest that genotyping for low penetrance breast cancer risk loci is clinically relevant, and that it will be more powerful if it can be combined with other established risk factors.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P3-12-11.
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Abstract
Women who gain excessive weight during pregnancy have an increased risk of post-partum obesity, and retention of gestational weight gain (GWG) post birth is a strong predictor of maternal overweight/obesity a decade or more after the birth. The aim of the current review was to identify, and evaluate the effect of key variables designed to modify risk factors for excessive weight gain in pregnant women that have been targeted in interventions over the last decade. The 10 interventions focused primarily on behavioural changes in relation to physical activity and/or to eating. While six studies reported significantly less weight gain in the intervention women, only three showed that women in the intervention were significantly more likely to gain within recommended guidelines. GWG was reduced in only normal-weight, low-income, obese, or overweight women, or not at all. Only one study reported a reduction in GWG in women with body mass indexes spanning the normal, overweight and obese categories. The findings were inconsistent in relation to what factors need to be targeted in intervention programmes to reduce GWG. Consideration of psychological factors relevant to pregnancy, in addition to behavioural changes in relation to eating and physical activity, is suggested for future intervention studies.
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Sci-Fri AM(1): Imaging-05: Setting Local Diagnostic Reference Levels. Med Phys 2009. [DOI: 10.1118/1.3244188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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172 CENTRAL SENSITIZATION — INDUCTION OF RECTAL HYPER‐SENSITIVITY AND ACTIVATION OF DESCENDING INHIBITION FOLLOWING OESOPHAGEAL ACID AND CAPSAICIN INFUSION. Eur J Pain 2009. [DOI: 10.1016/s1090-3801(09)60175-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Multimodal sensory testing of the rectum and rectosigmoid: development and reproducibility of a new method. Neurogastroenterol Motil 2008; 20:908-18. [PMID: 18482255 DOI: 10.1111/j.1365-2982.2008.01126.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Evaluation of rectal and rectosigmoid sensation is important in basic, clinical and pharmacological studies. New methods to evoke and assess multimodal (electrical, thermal and mechanical) experimental pain of the upper gut activate distinct pathways and mimics clinical pain. The aims of the current study were to characterize the sensory response and reproducibility to multimodal stimulation of rectum and the rectosigmoid. A multimodal rectal probe was developed. Mucosal electrostimulation was delivered at the recto-sigmoid junction. In Rectum, impedance planimetry was used for measurement of cross-sectional area (CSA) during distension. Circulation of water within the bag at either 4 or 60 degrees C was applied for thermal stimulation. The method was tested in 12 healthy volunteers (six men mean age 32 years) on two subsequent days. Mechanical and sensory responses and referred pain areas were assessed. Stimulation with electrical, thermal and mechanical modalities resulted in different sensory perceptions. The relationship between stimulus intensity and sensory response was linear for all modalities. Sensory response to different modalities did not differ between investigation days (all P-values > 0.1). Approximately 75% of subjects felt referred pain in distinct skin locations. Between-days reproducibility was good for all modalities [intra-class correlation (ICC) > or = 0.6]. At sensory threshold, CSA showed best reproducibility (ICC > or = 0.9). At pain detection threshold stretch ratio, CSA and electrostimulation showed best reproducibility (ICC = 1.0; 0.9; 0.9). The present model was easily implemented, robust and showed good reproducibility. It can be used to study pathophysiology or pharmacological interventions in healthy controls and in patients with diseases involving the distal hindgut.
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Electrophysiological effects of intravitreal Avastin (bevacizumab) in the treatment of exudative age-related macular degeneration. Br J Ophthalmol 2008; 92:1248-52. [DOI: 10.1136/bjo.2008.138800] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Effects of a 5-HT(4) receptor agonist on oesophageal function and gastro-oesophageal reflux: studies using combined impedance-manometry and combined impedance-pH. Aliment Pharmacol Ther 2006; 24:155-62. [PMID: 16803614 DOI: 10.1111/j.1365-2036.2006.02968.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND 5-HT(4) receptor agonists are used as promotility agents of the stomach, small and large intestine. There is limited information on the influence of 5-HT(4) receptor agonists on oesophageal function and gastro-oesophageal reflux. AIM To evaluate the effects of tegaserod, a 5-HT(4) agonist on oesophageal function using impedance-manometry and postprandial reflux using impedance-pH monitoring. METHODS Twenty healthy volunteers were enrolled in a double-blind randomized three-period crossover placebo-controlled study. Impedance-manometry and impedance-pH monitoring after a refluxogenic meal were performed at baseline and after 2 days of dosing with tegaserod 6 mg b.d. or placebo. Multichannel intraluminal impedance-EM recorded pressure and bolus transit data during standardized swallows. Multichannel intraluminal impedance-pH monitoring recorded the number of 2-h postprandial acid and non-acid reflux episodes. RESULTS We found no significant difference in distal oesophageal amplitude when subjects received placebo (median 94.5; range: 53-243 mmHg) or tegaserod (93.6; 43-216 mmHg). Bolus transit time was similar during dosing with placebo (7.1; 5.3-9.4 s) and tegaserod (7.2; 5.9-11.1 s). We observed similar numbers of acid and non-acid reflux episodes during dosing with placebo (5; 0-15 and 3; 0-18, respectively) and tegaserod (2; 0-11 and 4; 0-19, respectively). CONCLUSION Tegaserod, a 5-HT(4) receptor agonist does not change oesophageal motility and gastro-oesophageal reflux parameters in healthy volunteers.
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Abstract
The gating-spring theory of hair cell mechanotransduction channel activation was first postulated over twenty years ago. The basic tenets of this hypothesis have been reaffirmed in hair cells from both auditory and vestibular systems and across species. In fact, the basic findings have been reproduced in every hair cell type tested. A great deal of information regarding the structural, mechanical, molecular and biophysical properties of the sensory hair bundle and the mechanotransducer channel has accumulated over the past twenty years. The goal of this review is to investigate new data, using the gating spring hypothesis as the framework for discussion. Mechanisms of channel gating are presented in reference to the need for a molecular gating spring or for tethering to the intra- or extracellular compartments. Dynamics of the sensory hair bundle and the presence of motor proteins are discussed in reference to passive contributions of the hair bundle to gating compliance. And finally, the molecular identity of the channel is discussed in reference to known intrinsic properties of the native transducer channel.
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Plants and altitude--revisited. ANNALS OF BOTANY 2004; 94:199. [PMID: 15229127 PMCID: PMC4242168 DOI: 10.1093/aob/mch143] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2003] [Revised: 03/03/2004] [Accepted: 04/28/2004] [Indexed: 05/24/2023]
Abstract
The importance of modelling and the integration of all environmental factors as they change with time is emphasized in relation to the evaluation of plant response to altitude.
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Cognitive behaviour therapy: an evidence-based clinical framework for working with dysfunctional thoughts. COUNSELLING PSYCHOLOGY QUARTERLY 2004. [DOI: 10.1080/09515070410001665884] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14. Effects of a high maternal phytoestrogen diet on the reproductive development of male offspring. Reprod Fertil Dev 2003. [DOI: 10.1071/srb03ab14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Management of spinal cord and cauda equina compression secondary to epidural metastatic disease in adults with malignant germ cell tumours. Clin Oncol (R Coll Radiol) 2002; 14:481-90. [PMID: 12512971 DOI: 10.1053/clon.2002.0167] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
AIM To review the management and clinical outcome of 10 patients, presenting to a single centre with symptoms and signs of spinal cord or cauda equina compression secondary to epidural metastatic disease from a testicular germ cell cancer. METHODS Clinical data regarding presenting history, physical examination, staging investigations, treatment and clinical outcome were retrospectively obtained from patient records. RESULTS Eight patients exhibited neurological deficits at the time of initial presentation of germ cell cancer or as a first manifestation of relapse following dog leg irradiation. Four of these cases were managed with chemotherapy alone, with excellent neurological recovery, whilst four underwent decompressive laminectomy--in three cases prior to referral and in one case after commencing chemotherapy. Five of the eight patients relapsed. Four required further chemotherapy (high dose in two cases). The remaining patient underwent thoracic surgery, with resection of teratoma differentiated. Six of the eight patients are currently alive and disease free. Two patients had chemorefractory disease and died, though one was treated in the pre-cisplatin era. Two patients presented with cord compression as a feature of disease relapse following chemotherapy, and were managed with radiotherapy alone in an attempt to achieve local disease control and limit neurological dysfunction. However, both subsequently died with progressive disease. CONCLUSION Epidural spinal cord or cauda equina compression is a rare complication of metastatic germ cell cancer, which can be successfully managed in chemo-naive patients with good neurological outcome.
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Lower GI 05. Br J Surg 2002. [DOI: 10.1046/j.1365-2168.89.s.1.31_5.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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A randomized trial of a group cognitive intervention for preventing depression in adolescent offspring of depressed parents. ARCHIVES OF GENERAL PSYCHIATRY 2001; 58:1127-34. [PMID: 11735841 DOI: 10.1001/archpsyc.58.12.1127] [Citation(s) in RCA: 354] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Adolescent offspring of depressed parents are at high risk for development of depression. Cognitive restructuring therapy holds promise for preventing progression to depressive episodes. METHODS A randomized, controlled trial was conducted to prevent depressive episodes in at-risk offspring (aged 13-18 years) of adults treated for depression in a health maintenance organization (HMO). Potential adult cases were found by reviewing the HMO pharmacy records for dispensation of antidepressant medication and the mental health appointment system. Medical charts were reviewed for a depression diagnosis. Recruitment letters signed by treating physicians were mailed to adults. Eligible offspring had subdiagnostic depressive symptoms insufficient to meet full DSM-III-R criteria for affective disorder and/or a past mood disorder. These youth were randomized to usual HMO care (n = 49) or usual care plus a 15-session group cognitive therapy prevention program (n = 45). RESULTS We detected significant treatment-by-time (program) effects for the Center for Epidemiological Studies Depression Scale (P=.005) and the Global Assessment of Functioning scores (P =.04). Survival analysis of incident major depressive episodes during a median 15-month follow-up found a significant advantage (P =.003) for the experimental condition (9.3% cumulative major depression incidence) compared with the usual-care control condition (28.8%). CONCLUSION A brief, group cognitive therapy prevention program can reduce the risk for depression in the adolescent offspring of parents with a history of depression.
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Abstract
PURPOSE To examine the amount of support being provided by nurses to women during childbirth and factors that influence the provision of support. STUDY DESIGN Exploratory, descriptive. METHODS Work sampling method was used to determine the percentage of time nurses spend in supportive care activities. Twelve nurses were observed over six nonconsecutive day shifts on a birthing unit of a Canadian teaching hospital in Quebec. A total of 404 observations were made. Nurses were also interviewed to determine their perceptions of what constitutes supportive nursing care and the factors that facilitate or inhibit the provision of this care. RESULTS Nurses spent only 12.4% of their total time providing supportive care to laboring women. Interviews with nurses suggested that perceptions of the components of supportive care were comparable to this study's operational definition of support, namely: physical, emotional, and instructional/informational support and advocacy. Barriers to providing support identified by nurses included lack of time and insufficient staff. However, further content analysis of the interview data revealed that healthcare providers had a pervasive sense of control over laboring women and their partners. CLINICAL IMPLICATIONS Although nursing support has been identified as an important aspect of nursing care in childbirth, this study demonstrated an incongruity between what nurses perceived as being supportive care and the amount of support that was actually provided. Barriers to the provision of supportive care in the practice setting as well as suggestions for its enhancement are discussed.
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