4,331 research outputs found
Three Lenses on the Multinational Enterprise: Politics, Corruption and Corporate Social Responsibility.
Scholars who study multinational enterprises (MNEs) recognize the complex relationship between international business and society. However, compared to other international business topics, research on politics, corruption and corporate social responsibility (CSR) -- three 'lenses' on the MNE -- remains somewhat embryonic, with critical unresolved issues regarding frameworks, measurement, methods and theory. This creates rich opportunities for integration and extension of disciplinary perspectives, which we explore in this article. Building on the three lenses framework, we identify common concepts and tools, outline an agenda for additional theoretical and empirical research, and review the papers in a Focused Issue of the Journal of International Business Studies.
Immunotherapy with myeloid cells for tolerance induction
PURPOSE OF REVIEW: Understanding the interplay between myeloid dendritic cells and T cells under tolerogenic conditions, and whether their interactions induce the development of antigen-specific regulatory T cells (Tregs) is critical to uncover the mechanisms involved in the induction of indefinite allograft survival. RECENT FINDINGS: Myeloid dendritic cell-T-cell interactions are seminal events that determine the outcome of the immune response, and multiple in-vitro protocols suggest the generation of tolerogenic myeloid dendritic cells that modulate T-cell responses, and determine the outcome of the immune response to an allograft following adoptive transfer. We believe that identifying specific conditions that lead to the generation of tolerogenic myeloid dendritic cells and Tregs are critical for the manipulation of the immune response towards the development of transplantation tolerance. SUMMARY: We summarize recent findings regarding specific culture conditions that generate tolerogenic myeloid dendritic cells that induce T-cell hyporesponsiveness and Treg development, which represents a novel immunotherapeutic approach to promote the induction of indefinite graft survival prolongation. The interpretations presented here illustrate that different mechanisms govern the generation of tolerogenic myeloid dendritic cells, and we discuss the concomitant therapeutic implications.This work was supported by the Programa RamĂłn y Cajal RYC-2006-1588, Ministerio de Educa-ciĂłn y Ciencia SAF2007-63579, Programa JosĂŠ Castillejo JC2008-00065, and Programa de InvestigaciĂłn de Grupos Emergentes del ISCIII (to J.C.O.), and NIH R01 AI-41428, AI-72039, and the Emerald Foundation (to J.S.B.).S
Who Gets Vocal about Hyperlocal: Neighborhood Involvement and Socioeconomics in the Sharing of Hyperlocal News
This is an Accepted Manuscript of an article published by Taylor & Francis in Journalism Practice on January 9. 2018, available online: http://www.tandfonline.com/10.1080/17512786.2017.1419827.This study examined the characteristics of readers who share hyperlocal news in person, over email, and through social media. A reader survey of 10 hyperlocal news websites that operate in a variety of communities in the United States was conducted (nâ=â2289). More readers indicated sharing hyperlocal news in person than through email or social media. Higher neighborhood involvement and higher education tended to characterize readers who shared hyperlocal news via each of the three channels. Education moderated the association between neighborhood involvement and sharing news in person and via social media. These results suggested that highly involved readers with little education used social media more than their highly educated neighbors to share news from hyperlocal websites. The study extends the precepts of channel complementarity theory into the domain of online news sharing
Renal failure deaths and their risk factors in India 2001â13: nationally representative estimates from the Million Death Study
Background
Renal failure represents a growing but mostly undocumented cause of premature mortality in low-income and middle-income countries. We investigated changes in adult renal failure mortality and its key risk factors in India using the nationally representative Million Death Study.
Methods
In this cross-sectional analysis of population-based data, two trained physicians independently assigned underlying causes to 150â018 deaths at ages 15â69 years from a nationally-representative mortality survey in India for 2001â03 and 2010â13, using the International Classification of Diseases, 10th version (ICD-10). We applied the age-specific proportion of renal failure deaths for the 2010â13 period to the 2015 UN estimates of total deaths in India and calculated age-standardised death rates for renal failure by rural or urban residence, state, and age group. We used proportional mortality of renal deaths (cases) to injuries (controls) to calculate the odds of renal death in the presence of different comorbidities and stratified risks by decade of birth.
Findings
In 2001â03, 2¡1% of total deaths among 15â69 year olds were from renal failure (1266 [2¡2%] of 58â871; unweighted). By 2010â13, the proportion of deaths from renal failure had risen to 2¡9% (2943 [3¡2%] of 91â147; unweighted) of total deaths and corresponding to 136â000 renal failure deaths (range 108â000â150â000) of 4â688â000 total deaths nationally in 2015. Age-standardised renal death rates were highest in the southern and eastern states, particularly among adults aged 45â69 years in 2010â13. Diabetes, hypertension, and cardiovascular disease were all significantly associated with increased renal failure deaths, with diabetes the strongest predictorâodds ratio (OR) vs control 9¡2 (95% CI 6¡7â12¡7) in 2001â03, rising to 15¡1 (12¡6â18¡1) in 2010â13. In the 2010â13 study population, the diabetes to non-diabetes OR was twice as large in adults born in the 1970s (25¡5, 95% CI 17¡6â37¡1) as in those individuals born during or before the 1950s (11¡7, 9¡1â14¡9).
Interpretation
Renal failure is a growing cause of premature death in India. Poorly treated diabetes is the most probable reason for this increase. Strategies aimed at diabetes prevention, and early detection and treatment are urgently needed in India, as well as greater access to renal replacement therapy
Green Wireless Internet Technology
YesIET Editorial: In the future communications will be pervasive in nature, allowing users access at the âtouch of buttonâ to attain any service, at any time, on any device. The future device design process requires both a reconfigurable RF front end and back end with high tuning speed, energy efficiency, excellent linearity and intelligence to maximise the âgreennessâ of the network. But energy efficiency and excellent linearity are the main topics that are driving the designs of future transceivers, including their efforts to minimise network contributions to climate changes such as the effect of CO2 emissions: the minimisation of these is a requirement for information and communication technology (ICT) as much as for other technologies. Recently, information and communication technologies were shown to account for 3% of global power consumption and 2% of global CO2 emissions, and hence far from insignificant. The approach towards energy conservation and CO2 reduction in future communications will require a gret deal of effort which should be targeted both at the design of energy efficient, low-complexity physical, MAC and network layers, while maintaining the required Quality of Service (QoS). There is also a need, in infrastructures, networks and user terminals, to take a more holistic approach to improving or achieving green communications, from radio operation, through functionality, up to implementation. The increasing demand for data and voice services is not the only cause for concern since energy management and conservation are now at the forefront of the political agenda. The vision of Europe 2020 is to become a smart, sustainable and inclusive economy, and as part of these priorities the EU have set forth the 20:20:20 targets, whereby greenhouse gas emissions and energy consumption should be reduced by 20% while energy from renewables should be increased by 20%
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Drosophila para bss Flies as a Screening Model for Traditional Medicine: Anticonvulsant Effects of Annona senegalensis.
Epilepsy is among the most common serious neurological disorders and affects around 50 million people worldwide, 80% of which live in developing countries. Despite the introduction of several new Anti-Epileptic Drugs (AEDs) in the last two decades, one third of treated patients have seizures refractory to pharmacotherapy. This highlights the need to develop new treatments with drugs targeting alternative seizure-induction mechanisms. Traditional medicine (TM) is used for the treatment of epilepsy in many developing countries and could constitute an affordable and accessible alternative to AEDs, but a lack of pre-clinical and clinical testing has so far prevented its wider acceptance worldwide. In this study we used Drosophila melanogaster paralytic bangsensitive (para bss ) mutants as a model for epileptic seizure screening and tested, for the first time, the anti-seizure effect of a non-commercial AED. We evaluated the effect of the African custard-apple, Annona senegalensis, which is commonly used as a TM for the treatment of epilepsy in rural Africa, and compared it with the classical AED phenytoin. Our results showed that a stem bark extract from A. senegalensis was significantly more effective than a leaf extract and similar to phenytoin in the prevention and control of seizure-like behavior. These results support that Drosophila constitutes a robust animal model for the screening of TM with potential value for the treatment of intractable epilepsy
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Structure-based inhibitors of amyloid beta core suggest a common interface with tau.
Alzheimer's disease (AD) pathology is characterized by plaques of amyloid beta (Aβ) and neurofibrillary tangles of tau. Aβ aggregation is thought to occur at early stages of the disease, and ultimately gives way to the formation of tau tangles which track with cognitive decline in humans. Here, we report the crystal structure of an Aβ core segment determined by MicroED and in it, note characteristics of both fibrillar and oligomeric structure. Using this structure, we designed peptide-based inhibitors that reduce Aβ aggregation and toxicity of already-aggregated species. Unexpectedly, we also found that these inhibitors reduce the efficiency of Aβ-mediated tau aggregation, and moreover reduce aggregation and self-seeding of tau fibrils. The ability of these inhibitors to interfere with both Aβ and tau seeds suggests these fibrils share a common epitope, and supports the hypothesis that cross-seeding is one mechanism by which amyloid is linked to tau aggregation and could promote cognitive decline
Failure to Preserve β-Cell Function With Mycophenolate Mofetil and Daclizumab Combined Therapy in Patients With New- Onset Type 1 Diabetes
OBJECTIVE This trial tested whether mycophenolate mofetil (MMF) alone or with daclizumab (DZB) could arrest the loss of insulin-producing β-cells in subjects with new-onset type 1 diabetes.
RESEARCH DESIGN AND METHODS A multi-center, randomized, placebo-controlled, double-masked trial was initiated by Type 1 Diabetes TrialNet at 13 sites in North America and Europe. Subjects diagnosed with type 1 diabetes and with sufficient C-peptide within 3 months of diagnosis were randomized to either MMF alone, MMF plus DZB, or placebo, and then followed for 2 years. The primary outcome was the geometric mean area under the curve (AUC) C-peptide from the 2-h mixed meal tolerance test.
RESULTS One hundred and twenty-six subjects were randomized and treated during the trial. The geometric mean C-peptide AUC at 2 years was unaffected by MMF alone or MMF plus DZB versus placebo. Adverse events were more frequent in the active therapy groups relative to the control group, but not significantly.
CONCLUSIONS Neither MMF alone nor MMF in combination with DZB had an effect on the loss of C-peptide in subjects with new-onset type 1 diabetes. Higher doses or more targeted immunotherapies may be needed to affect the autoimmune process
Solar Coronal Loops Associated with Small-scale Mixed Polarity Surface Magnetic Fields
How and where are coronal loops rooted in the solar lower atmosphere? The
details of the magnetic environment and its evolution at the footpoints of
coronal loops are crucial to understanding the processes of mass and energy
supply to the solar corona. To address the above question, we use
high-resolution line-of-sight magnetic field data from the Imaging Magnetograph
eXperiment instrument on the SUNRISE balloon-borne observatory and coronal
observations from the Atmospheric Imaging Assembly onboard the Solar Dynamics
Observatory of an emerging active region. We find that the coronal loops are
often rooted at the locations with minor small-scale but persistent
opposite-polarity magnetic elements very close to the larger dominant polarity.
These opposite-polarity small-scale elements continually interact with the
dominant polarity underlying the coronal loop through flux cancellation. At
these locations we detect small inverse Y-shaped jets in chromospheric Ca II H
images obtained from the SUNRISE Filter Imager during the flux cancellation.
Our results indicate that magnetic flux cancellation and reconnection at the
base of coronal loops due to mixed polarity fields might be a crucial feature
for the supply of mass and energy into the corona.Comment: Published in the Astrophysical Journal Supplement Serie
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