394 research outputs found
Interim Report: Assessing the Future Landscape of Scholarly Communication
The Center for Studies in Higher Education, with generous funding from the Andrew W. Mellon Foundation, is conducting research to understand the needs and desires of faculty for inprogress scholarly communication (i.e., forms of communication employed as research is being executed) as well as archival publication. In the interest of developing a deeper understanding of how and why scholars do what they do to advance their fields, as well as their careers, our approach focuses in fine-grained analyses of faculty values and behaviors throughout the scholarly communication lifecycle, including sharing, collaborating, publishing, and engaging with the public. Well into our second year, we have posted a draft interim report describing some of our early results and impressions ased on the responses of more than 150 interviewees in the fields of astrophysics, archaeology, biology, economics, history, music, and political science.Our work to date has confirmed the important impact of disciplinary culture and tradition on many scholarly communication habits. These traditions may override the perceived "opportunities" afforded by new technologies, including those falling into the Web 2.0 category. As we have listened to our diverse informants, as well as followed closely the prognostications about the likely future of scholarly communication, we note that it is absolutely imperative to be precise about terms. That includes being clear about what is meant by "open access" publishing (i.e., using preprint or postprint servers for scholarship published in prestigious outlets versus publishing in new, untested open access journals, or the more casual individual posting of working papers, blogs, and other non-peer-reviewed work). Our research suggests that enthusiasm for technology development and adoption should not be conflated with the hard reality of tenure and promotion requirements (including the needs and goals of final archival publication) in highly competitive professional environments
Keeping Weight Off: study protocol of an RCT to investigate brain changes associated with mindfulness-based stress reduction
INTRODUCTION: Obesity is a growing epidemic fuelled by unhealthy behaviours and associated with significant comorbidities and financial costs. While behavioural interventions produce clinically meaningful weight loss, weight loss maintenance is challenging. This may partially be due to failure to target stress and emotional reactivity. Mindfulness-based stress reduction (MBSR) reduces stress and emotional reactivity and may be a useful tool for behaviour change maintenance. This study seeks to provide a mechanistic understanding for clinical trials of the benefits of MBSR for weight loss maintenance by examining changes in functional connectivity (FC) and the association of these changes with clinical outcomes.
METHODS AND ANALYSIS: Community-dwelling individuals (n=80) who intentionally lost \u3e /=5% of their body weight in the past year will be recruited and randomised to an MBSR programme or educational control. FC using resting-state functional MRI will be measured at baseline and 8 weeks. Psychological factors, health behaviours, body mass index and waist circumference will be measured at baseline, 8 weeks and 6 months post intervention. A 12-month telephone follow-up will assess self-reported weight. Analyses will characterise FC changes in response to MBSR in comparison with a control condition, assess the relationship between baseline FC status and pre-post MBSR changes in FC and investigate the association of FC change with changes in psychological factors and weight loss maintenance.
ETHICS AND DISSEMINATION: The University of Massachusetts Medical School Institutional Review Board has approved this study, Declaration of Helsinki protocols are being followed, and patients will give written informed consent. The Independent Monitoring Committee will monitor protocol adherence. Results from the study will be disseminated to the medical community at conferences and submitted for publication in peer-reviewed journals when the last patient included has been followed up for 12 months.
TRIAL REGISTRATION NUMBER: NCT02189187
Acute liver toxicity with ifosfamide in the treatment of sarcoma: a case report
<p>Abstract</p> <p>Introduction</p> <p>Ifosfamide is a chemotherapy agent infrequently associated with liver toxicity. To the best of our knowledge, this report is the first to describe serious liver toxicity associated with ifosfamide used in combination with doxorubicin that caused acute but fully reversible liver failure and encephalopathy. This report reviews the possible mechanisms by which ifosfamide causes this adverse effect.</p> <p>Case report</p> <p>A 61-year-old Caucasian woman who presented with an inoperable right neck mass due to synovial sarcoma was treated with standard-dose ifosfamide and doxorubicin. Within 24 hours of completing the first cycle of chemotherapy, she developed significant derangements in liver function, with a 250-fold increase in transaminase and associated synthetic function impairment and encephalopathy. No other causes of liver failure were identified. Both biochemical tests and encephalopathy were reversed after supportive management and treatment with <it>N</it>-acetylcysteine. No liver toxicity was observed with subsequent cycles of chemotherapy with doxorubicin alone.</p> <p>Conclusion</p> <p>This case highlights the possibility that chemotherapy agents can cause rare and idiosyncratic toxicities, so physicians must be vigilant for drug reactions, especially when patients do not respond to usual treatment.</p
Acute liver toxicity with ifosfamide in the treatment of sarcoma: a case report
<p>Abstract</p> <p>Introduction</p> <p>Ifosfamide is a chemotherapy agent infrequently associated with liver toxicity. To the best of our knowledge, this report is the first to describe serious liver toxicity associated with ifosfamide used in combination with doxorubicin that caused acute but fully reversible liver failure and encephalopathy. This report reviews the possible mechanisms by which ifosfamide causes this adverse effect.</p> <p>Case report</p> <p>A 61-year-old Caucasian woman who presented with an inoperable right neck mass due to synovial sarcoma was treated with standard-dose ifosfamide and doxorubicin. Within 24 hours of completing the first cycle of chemotherapy, she developed significant derangements in liver function, with a 250-fold increase in transaminase and associated synthetic function impairment and encephalopathy. No other causes of liver failure were identified. Both biochemical tests and encephalopathy were reversed after supportive management and treatment with <it>N</it>-acetylcysteine. No liver toxicity was observed with subsequent cycles of chemotherapy with doxorubicin alone.</p> <p>Conclusion</p> <p>This case highlights the possibility that chemotherapy agents can cause rare and idiosyncratic toxicities, so physicians must be vigilant for drug reactions, especially when patients do not respond to usual treatment.</p
Origin of symbol-using systems: speech, but not sign, without the semantic urge
Natural language—spoken and signed—is a multichannel phenomenon, involving facial and body expression, and voice and visual intonation that is often used in the service of a social urge to communicate meaning. Given that iconicity seems easier and less abstract than making arbitrary connections between sound and meaning, iconicity and gesture have often been invoked in the origin of language alongside the urge to convey meaning. To get a fresh perspective, we critically distinguish the origin of a system capable of evolution from the subsequent evolution that system becomes capable of. Human language arose on a substrate of a system already capable of Darwinian evolution; the genetically supported uniquely human ability to learn a language reflects a key contact point between Darwinian evolution and language. Though implemented in brains generated by DNA symbols coding for protein meaning, the second higher-level symbol-using system of language now operates in a world mostly decoupled from Darwinian evolutionary constraints. Examination of Darwinian evolution of vocal learning in other animals suggests that the initial fixation of a key prerequisite to language into the human genome may actually have required initially side-stepping not only iconicity, but the urge to mean itself. If sign languages came later, they would not have faced this constraint
Quality of life with cediranib in relapsed ovarian cancer: The ICON6 phase 3 randomized clinical trial
BACKGROUND: The ICON6 trial showed that cediranib, an oral inhibitor of vascular endothelial growth factor receptors 1, 2, and 3, improved clinical outcomes for patients with platinum-sensitive relapsed ovarian cancer when it was used with chemotherapy and was continued as maintenance therapy. This study describes health-related quality of life (QOL) during the first year of treatment. METHODS: Four hundred fifty-six women were randomly allocated to receive standard chemotherapy only, chemotherapy with concurrent cediranib, or chemotherapy with cediranib administered concurrently and continued as maintenance. Patients completed QOL questionnaires until disease progression every 3 weeks during chemotherapy and then every 6 weeks to 1 year. Patients alive with disease progression completed a QOL form 1 year after randomization. The primary QOL endpoint was the global score from the Quality of Life Questionnaire Core 30 (of the European Organization for Research and Treatment of Cancer) at 1 year, with the standard chemotherapy group compared with the concurrent-maintenance cediranib group.
RESULTS: The rate of questionnaire compliance was 90% at the baseline and 76% at 1 year and was similar across the 3 groups. The mean global QOL score at 1 year was 62.6 points for the standard chemotherapy group and 68.7 points for the concurrent-maintenance group (+4.5; 95% confidence interval, –2.0 to 11.0; P = .18). Sensitivity analyses suggested that this finding was robust to the effect of missing data, and the improvement became statistically significant after adjustments for self-reported diarrhea. CONCLUSIONS: The 6th study by the International Collaboration in Ovarian Neoplasm (ICON6) showed a significant improvement in progression-free survival with cediranib as concurrent and maintenance therapy. No QOL detriment with cediranib was found 1 year after treatment was commenced. The maintenance of QOL along with prolonged cancer control suggests that cediranib has a valuable role in the treatment of relapsed ovarian cancer
GABAergic Neuron-Specific Loss of Ube3a Causes Angelman Syndrome-Like EEG Abnormalities and Enhances Seizure Susceptibility
Loss of maternal UBE3A causes Angelman syndrome (AS), a neurodevelopmental disorder associated with severe epilepsy. We previously implicated GABAergic deficits onto layer (L) 2/3 pyramidal neurons in the pathogenesis of neocortical hyperexcitability, and perhaps epilepsy, in AS model mice. Here we investigate consequences of selective Ube3a loss from either GABAergic or glutamatergic neurons, focusing on the development of hyperexcitability within L2/3 neocortex and in broader circuit and behavioral contexts. We find that GABAergic Ube3a loss causes AS-like increases in neocortical EEG delta power, enhances seizure susceptibility, and leads to presynaptic accumulation of clathrin-coated vesicles (CCVs) – all without decreasing GABAergic inhibition onto L2/3 pyramidal neurons. Conversely, glutamatergic Ube3a loss fails to yield EEG abnormalities, seizures, or associated CCV phenotypes, despite impairing tonic inhibition onto L2/3 pyramidal neurons. These results substantiate GABAergic Ube3a loss as the principal cause of circuit hyperexcitability in AS mice, lending insight into ictogenic mechanisms in AS
Delivering energy efficiency and carbon reduction schemes in England: Lessons from Green Deal Pioneer Places
Against a background of growing international and national carbon reduction legislation, the UK government introduced the “Green Deal” to deliver a significant increase in housing energy efficiency and reduction in carbon emissions. This paper reflects on one English local authority's experience delivering a programme intended to foster local interest in the Green Deal. Drawing on social surveys and pre and post Green Deal intervention interviews with five demonstrator homes (households that applied to receive a Green Deal package fully funded by the scheme, providing a test bed for the Green Deal recruitment and installation process), this paper shows that awareness and understanding of the Green Deal scheme is low. There is opposition to the cost of finance offered but a strong interest in improving household warmth and for funding improvements through payments added to the electricity bill. Demonstrator home residents perceived Green Deals had improved the warmth and quality of their home, but saving money was the primary motivator for their involvement, not increasing warmth. Whilst Green Deal has not delivered the level of success that was hoped, much can be learned from the scheme to improve future energy efficiency schemes that will be necessary to deliver emission reduction commitments
Interventions to reduce contaminated aerosols produced during dental procedures for preventing infectious diseases
This is a protocol for a Cochrane Review (intervention). The objectives are as follows: To assess the effectiveness of methods used during dental treatment procedures to minimise aerosol production and reduce or neutralise contamination in aerosols
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