881 resultados para Social Control, Law, Crime, and Deviance
Resumo:
This article examines hospital provision in Ireland during the early twentieth century. It examines attempts by the newly independent Irish Free State to reform and de-stigmatise medical relief in former workhouse infirmaries. Such reforms were designed to move away from nineteenth century welfare regimes which were underpinned by principles of deterrence. The reform initiated in independent Ireland - the first attempted break-up of the New Poor Law in Great Britain or Ireland - was partly successful. Many of the newly named County and District Hospitals provided solely for medical cases and managed to dissociate such health care provision from the relief of poverty. However, some hospitals continued to act as multifunctional institutions and provided for various categories including the sick, the aged and infirm, 'unmarried mothers' and 'harmless lunatics'. Such institutions often remained associated with the relief of poverty. This article also examines patient fee-payment and outlines how fresh terms of entitlement and means-testing were established. Such developments were even more pronounced in voluntary hospitals where the majority of patients made a financial contribution to their treatment. The article argues that the ability to pay at times determined the type of provision, either voluntary or rate-aided, available to the sick. However, it concludes that the clinical condition of patients often determined whether they entered a more prestigious voluntary hospital or the former workhouse. Although this article concentrates on two Irish case studies, County Kerry and Cork City; it is conceptualised within wider developments with particular reference to the British context.
Resumo:
BACKGROUND: Bdellovibrio bacteriovorus HD100 must regulate genes in response to a variety of environmental conditions as it enters, preys upon and leaves other bacteria, or grows axenically without prey. In addition to "housekeeping" sigma factors, its genome encodes several alternate sigma factors, including 2 Group IV-RpoE-like proteins, which may be involved in the complex regulation of its predatory lifestyle.
RESULTS: We find that one sigma factor gene, bd3314, cannot be deleted from Bdellovibrio in either predatory or prey-independent growth states, and is therefore possibly essential, likely being an alternate sigma 70. Deletion of one of two Group IV-like sigma factor genes, bd0881, affects flagellar gene regulation and results in less efficient predation, although not due to motility changes; deletion of the second, bd0743, showed that it normally represses chaperone gene expression and intriguingly we find an alternative groES gene is expressed at timepoints in the predatory cycle where intensive protein synthesis at Bdellovibrio septation, prior to prey lysis, will be occurring.
CONCLUSIONS: We have taken the first step in understanding how alternate sigma factors regulate different processes in the predatory lifecycle of Bdellovibrio and discovered that alternate chaperones regulated by one of them are expressed at different stages of the lifecycle.
Resumo:
AIMS: We report the outcomes of a large lung stereotactic ablative body radiotherapy (SABR) programme for primary non-small cell lung cancer (NSCLC) and pulmonary metastases. The primary study aim was to identify factors predictive for local control.
MATERIALS AND METHODS: In total, 311 pulmonary tumours in 254 patients were treated between 2008 and 2011 with SABR using 48-60 Gy in four to five fractions. Local, regional and distant failure data were collected prospectively, whereas other end points were collected retrospectively. Potential clinical and dosimetric predictors of local control were evaluated using univariate and multivariate analyses.
RESULTS: Of the 311 tumours, 240 were NSCLC and 71 were other histologies. The 2 year local control rate was 96% in stage I NSCLC, 76% in colorectal cancer (CRC) metastases and 91% in non-lung/non-CRC metastases. Predictors of better local control on multivariate analysis were non-CRC tumours and a larger proportion of the planning target volume (PTV) receiving ≥100% of the prescribed dose (higher PTV V100). Among the 45 CRC metastases, a higher PTV V100 and previous chemotherapy predicted for better local control.
CONCLUSIONS: Lung SABR of 48-60 Gy/four to five fractions resulted in high local control rates for all tumours except CRC metastases. Covering more of the PTV with the prescription dose (a higher PTV V100) also resulted in superior local control.
Resumo:
This book contributes towards EU studies and the growing discourse on law and public health. It uses the EU’s governance of public health as a lens through which to explore questions of legal competence and its development through policy and concrete techniques, processes and practices, risk and security, human rights and bioethics, accountability and legitimacy, democracy and citizenship, and the nature, essence and ‘future trajectory’ of the European integration project. These issues are explored first, by situating the EU's public health strategy within the overarching architecture of governance and subsequently by examining its operationalisation in relation to the key public health problems of cancer, HIV/AIDS and pandemic planning.
The book argues that the centrality and valorisation of scientific and technical knowledge and expertise in the EU's risk-based governance means that citizen participation in decision-making is largely marginalised and underdeveloped – and that this must change if public health and the quality, accountability and legitimacy of EU governance and its regulation are to be improved. Subsequently the book goes on to argue that the legitimating discourses of ethics and human rights, and the developing notion of EU (supra-)stewardship responsibility, can help to highlight the normative dimensions of governance and its interventions in public health. These discourses and dimensions provide openings and possibilities for citizens to power ‘technologies of participation’ and contribute important supplementary knowledge to decision-making.
Resumo:
High-affinity nitrate transport was examined in intact hyphae of Neurospora crassa using electrophysiological recordings to characterize the response of the plasma membrane to NO3 - challenge and to quantify transport activity. The NO3 --associated membrane current was determined using a three electrode voltage clamp to bring membrane voltage under experimental control and to compensate for current dissipation along the longitudinal cell axis. Nitrate transport was evident in hyphae transferred to NO3 --free, N-limited medium for 15 hr, and in hyphae grown in the absence of a nitrogen source after a single 2-min exposure to 100 μM NO3 -. In the latter, induction showed a latency of 40-80 min and rose in scalar fashion with full transport activity mensurable approx. 100 min after first exposure to NO3 -; it was marked by the appearance of a pronounced sensitivity of membrane voltage to extracellular NO3 - additions which, after induction, resulted in reversible membrane depolarizations of (+)54-85 mV in the presence of 50 μM NO3 -; and it was suppressed when NH4 +, was present during the first, inductive exposure to NO3 -. Voltage clamp measurements carried out immediately before and following NO3 - additions showed that the NO3 --evoked depolarizations were the consequence of an inward-directed current that appeared in parallel with the depolarizations across the entire range of accessible voltages -400 to +100 mV). Measurements of NO3 - uptake using NO3 --selective macroelectrodes indicated a charge stoichiometry for NO3 - transport of 1(+):1(NO3 -) with common K(m) and J(max) values around 25 μM and 75 pmol NO3 - cm-2sec-1, respectively, and combined measurements of pH(o) and [NO3 -](o) showed a net uptake of approx. 1 H+ with each NO3 - anion. Analysis of the NO3 - current demonstrated a pronounced voltage sensitivity within the normal physiological range between -300 and -100 mV as well as interactions between the kinetic parameters of membrane voltage, pH(o) and [NO3 -](o). Increasing the bathing pH from 5.5 to 8.0 reduced the current and the associated membrane depolarizations 2- to 4-fold. At a constant pH(o) of 6.1, driving the membrane voltage from -350 to -150 mV resulted in an approx. 3-fold reduction in the maximum current and a 5-fold rise in the apparent affinity for NO3 -. By contrast, the same depolarization effected an approx. 20% fall in the K(m) for transport as a function in [H+](o). These, and additional results are consistent with a charge-coupling stoichiometry of 2(H+) per NO anion transported across the membrane, and implicate a carrier cycle in which NO binding is kinetically adjacent to the rate-limiting step of membrane charge transit. The data concur with previous studies demonstrating a pronounced voltage-dependence to high-affinity NO3 - transport system in Arabidopsis, and underline the importance of voltage as a kinetic factor controlling NO3 - transport; finally, they distinguish metabolite repression of NO3 - transport induction from its sensitivity to metabolic blockade and competition with the uptake of other substrates that draw on membrane voltage as a kinetic substrate.