949 research outputs found

    Synthesis and antiproliferative study of phosphorescent multimetallic Re(I)/Au(I) complexes containing fused imidazo[4, 5-f]-1, 10-phenanthroline core

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    Five heterobimetallic Re-I/Au-I and a tri-metallic Re-I/Au-I/Re-I species following the formulas fac-ReCl (CO)(3)(NNCAuR)](0/+) and (fac-ReCl (CO)(3)(NNC)])(2)Au](+), where R is an iodide (1), phenylacetylene (2), dodecanethiol (3), 2, 3, 4, 6-tetra-O-acetyl-1-thio-beta-D-glucopyranose (4) and JohnPhos (5) and NNC is the fused imidazo4, 5-f]-1, 10-phenanthroline heterotopic ligand, were synthesised and fully characterised by a variety of spectroscopic and analytical techniques. The resultant complexes are luminescent in the orange region, revealing classical metal-to-ligand charge transfer ((MLCT)-M-3) ((Re (d pi) -> (NNC)(pi*)) emission in aerated DMSO solution. The red shifted emission observed on going from 3 to 4 suggests that the electronic properties of the gold ancillary ligand are implicated in the emissive properties. Antiproliferative activity in tumour cell lines, lung (A549) and cervix (HeLa) cells revealed that only complex 4 containing a 2, 3, 4, 6-tetra-O-acetyl-1-thio-beta-D-glucopyranose as gold ancillary ligand possesses certain cytotoxicity in both cell lines

    Simulating Membrane Systems in Digital Computers

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    * Work partially supported by contribution of EU commission Under The Fifth Framework Programme, project “MolCoNet” IST-2001-32008.Membrane Computing started with the analogy between some processes produced inside the complex structure of living cells and computational processes. In the same way that in other branches of Natural Computing, the model is extracted from nature but it is not clear whether or not the model must come back to nature to be implemented. As in other cases in Natural Computing: Artificial Neural Networks, Genetic Algorithms, etc; the models have been implemented in digital computers. Hence, some papers have been published considering implementation of Membrane Computing in digital computers. This paper introduces an overview in the field of simulation in Membrane Computing

    Thoracoscopy and talc poudrage compared with intercostal drainage and talc slurry infusion to manage malignant pleural effusion: the TAPPS RCT

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    Background: There are around 40,000 new cases of malignant pleural effusion in the UK each year. Insertion of talc slurry via a chest tube is the current standard treatment in the UK. However, some centres prefer local anaesthetic thoracoscopy and talc poudrage. There is no consensus as to which approach is most effective. Objective: This trial tested the hypothesis that thoracoscopy and talc poudrage increases the proportion of patients with successful pleurodesis at 3 months post procedure, compared with chest drain insertion and talc slurry. Design: This was a multicentre, open-label, randomised controlled trial with embedded economic evaluation. Follow-up took place at 1, 3 and 6 months. Setting: This trial was set in 17 NHS hospitals in the UK. Participants: A total of 330 adults with a confirmed diagnosis of malignant pleural effusion needing pleurodesis and fit to undergo thoracoscopy under local anaesthetic were included. Those adults needing a tissue diagnosis or with evidence of lung entrapment were excluded. Interventions: Allocation took place following minimisation with a random component, performed by a web-based, centralised computer system. Participants in the control arm were treated with a bedside chest drain insertion and 4 g of talc slurry. In the intervention arm, participants underwent local anaesthetic thoracoscopy with 4 g of talc poudrage. Main outcome measures: The primary outcome measure was pleurodesis failure at 90 days post randomisation. Secondary outcome measures included mortality and patient-reported symptoms. A cost–utility analysis was also performed. Results: A total of 166 and 164 patients were allocated to poudrage and slurry, respectively. Participants were well matched at baseline. For the primary outcome, no significant difference in pleurodesis failure was observed between the treatment groups at 90 days, with rates of 36 out of 161 (22%) and 38 out of 159 (24%) noted in the poudrage and slurry groups, respectively (odds ratio 0.91, 95% confidence interval 0.54 to 1.55; p = 0.74). No differences (or trends towards difference) were noted in adverse events or any of the secondary outcomes at any time point, including pleurodesis failure at 180 days [poudrage 46/161 (29%), slurry 44/159 (28%), odds ratio 1.05, 95% confidence interval 0.63 to 1.73; p = 0.86], mean number of nights in hospital over 90 days [poudrage 12 nights (standard deviation 13 nights), slurry 11 nights (standard deviation 10 nights); p = 0.35] and all-cause mortality at 180 days [poudrage 66/166 (40%), slurry 68/164 (42%); p = 0.70]. At £20,000 per quality-adjusted life-year gained, poudrage would have a 0.36 probability of being cost-effective compared with slurry. Limitations: Entry criteria specified that patients must be sufficiently fit to undergo thoracoscopy, which may make the results less applicable to those patients presenting with a greater degree of frailty. Furthermore, the trial was conducted on an open-label basis, which may have influenced the results of patient-reported measures. Conclusions: The TAPPS (evaluating the efficacy of Thoracoscopy And talc Poudrage versus Pleurodesis using talc Slurry) trial has robustly demonstrated that there is no additional clinical effectiveness or cost-effectiveness benefit in performing talc poudrage at thoracoscopy over bedside chest drain and talc slurry for the management of malignant pleural effusion. Trial registration: Current Controlled Trials ISRCTN47845793. Funding: This project was funded by the National Institute for Health Research (NIHR) Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 24, No. 26. See the NIHR Journals Library website for further project information

    European cardiovascular disease statistics

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    This is the third edition of European cardiovascular disease statistics. The first edition was published in 2000 when the European Union (EU) consisted of 15 Member States. After enlargement in 2004 and then again in 2007, there are now 27 Member States. Much has changed in the last seven years, but cardiovascular disease (CVD) remains the main cause of death in the EU. The European cardiovascular disease statistics was the first publication to bring together all the available sources of information about the burden of CVD in Europe, including data on death and illness, treatment, the prevalence of behavioural risk factors for CVD (smoking, diet, physical inactivity and alcohol consumption), and the prevalence of medical conditions associated with CVD (raised cholesterol, raised blood pressure, overweight and obesity, and diabetes). Ithas become an indispensable resource for anybody working on reducing the burden of CVD in Europe or in public health generally.<br /

    Family relationships and dementia: A synthesis of qualitative research including the person with dementia

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    yesFamily relationships are important for wellbeing across the life course and are known to be important for people living with dementia, bringing benefits to self-esteem and identity, as well as providing support for people living at home. Recent research has explored the impact of dementia upon relationships. Much of this research is qualitative in nature and rarely included in systematic reviews, however, it has the potential to provide significant contributions to understanding the interplay between family relationships and dementia and to inform interventions. A systematic synthesis of qualitative research concerning the impact of dementia upon family relationships was undertaken, using thematic synthesis. Eleven articles were reviewed, which address the perspectives of people living with dementia and their spouse and/or adult children. The aims of this review are to illuminate what is currently known about the reciprocal influences between family relationships and dementia from the perspectives of the family (including the person with dementia); and to consider the implications of these findings for research and practice. Four super-ordinate themes were identified: A shared history, negotiating the impact of dementia upon the relationship, openness and awareness, and shifting sands. This synthesis contributes to an emerging field but also highlights gaps in current understanding of the impact of dementia upon relationships and in providing appropriate interventions. Implications for research and practice are considered

    Cost-effectiveness of intrapleural use of tissue plasminogen activator and DNase in pleural infection:Evidence from the MIST2 randomised controlled trial

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    The MIST2 trial showed that combined intrapleural use of tissue plasminogen activator (t-PA) and DNase was effective when compared to single agents or placebo. However, the treatment costs are significant and overall cost-effectiveness of combined therapy remains unclear.An economic evaluation of the MIST2 trial was performed to assess the cost-effectiveness of combined therapy. Costs included were those related to study medications, initial hospital stay, and subsequent hospitalisations. Outcomes were measured in terms of life-years gained. All costs were reported in Euros (€) and in 2016 prices.Mean annual costs were lowest in the tPA-DNase group (€10 605 for t-PA, €17 856 for DNase; €13 483 for placebo, €7248 for t-PA-DNase (p=0.209)). Mean 1-year life expectancy was: 0.988 for t-PA; 0.923 for DNase; and 0.969 for both placebo and t-PA-DNase (p=0.296). Both DNase and placebo were less effective, in terms of life-years gained, and more costly than t-PA. When t-PA-DNase was compared to placebo, the incremental cost per life-year gained of t-PA-DNase was €1.6 billion, with a probability of 0.85 of t-PA-DNase being cost-effective.This study demonstrates that combined t-PA-DNase is likely to be highly cost-effective. In light of this evidence, a definitive trial designed to facilitate a thorough economic evaluation is warranted to provide further evidence on cost-effectiveness of this promising combined intervention
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