599 research outputs found

    Evaluation of Two Commercially Available DNA Tests for Detection of Human Papillomavirus

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    Objective: This study was designed to compare the sensitivity, specificity, efficiency, positive and negative predictive values, and ease of use for 2 commercially available hybridization kits for detecting human papillomavirus (HPV) DNA: Oncor Southern blot (SB) (Oncor, Inc., Gaithersburg, MD) and Digene ViraType dot blot (DB) (Digene Diagnostics, Inc., Silver Spring, MD)

    Characterisation of Schiff base and chromophore in green proteorhodopsin by solid-state NMR

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    The proteorhodopsin family consists of hundreds of homologous retinal containing membrane proteins found in bacteria in the photic zone of the oceans. They are colour tuned to their environment and act as light-driven proton pumps with a potential energetic and regulatory function. Precise structural details are still unknown. Here, the green proteorhodopsin variant has been selected for a chemical shift analysis of retinal and Schiff base by solid-state NMR. Our data show that the chromophore exists in mainly all-trans configuration in the proteorhodopsin ground state. The optical absorption maximum together with retinal and Schiff base chemical shifts indicate a strong interaction network between chromophore and opsin. © Springer Science+Business Media B.V. 2007

    Variations in multiple sclerosis practice within Europe - Is it time for a new treatment guideline?

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    In the past 5 years, the combination of developments in diagnostic strategy and approval of new disease-modifying therapies has provided an opportunity to achieve dramatic improvements in patient outcomes in multiple sclerosis (MS). However, across Europe there are several factors that may prevent patients from receiving the best therapy at the appropriate time, and there is variation among countries in terms of which of these factors are most relevant. Here, we review current MS clinical practices in a number of countries in the European Union to identify differences regarding initiation of treatment in patients with clinically isolated syndrome or relapsing-remitting MS, and differences in the timing of treatment switch or escalation. While recognizing that policy is not static in any country, we believe that patients' interests would be better served if a European treatment guideline was developed. Such a guideline could both inform and be informed by national policies, facilitating the dissemination of best clinical practice internationally.info:eu-repo/semantics/publishedVersio

    Terminal Ligand and Packing Effects on Slow Relaxation in an Isostructural Set of [Dy(H2_{2}dapp)X2_{2}]+ Single Molecule Magnets**

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    Three new dysprosium complexes with a pentadentate ligand occupying five equatorial sites differ only in the nature of the axial ligands. These help tune the relaxation properties as judged by an analysis of the AC susceptibility data. More in depth analysis by using two recently suggested fitting equations lead to similar outcomes for all three systems. As a further contribution to the relaxation pathway involving the phonon bath it is concluded that a short nitrate-nitrate interaction between molecules helps dampen the spin phonon coupling. We report three structurally related single ion Dy compounds using the pentadentate ligand 2,6-bis((E)-1-(2-(pyridin-2-yl)-hydrazineylidene)ethyl)pyridine (H2_{2}dapp) [Dy(H2_{2}dapp)(NO3_{3})2_{2}]NO3_{3} (1), [Dy(H2_{2}dapp)(OAc)2_{2}]Cl (2) and [Dy(H2_{2}dapp)(NO3_{3})2_{2}]Cl0.92_{0.92}(NO3_{3})0.08_{0.08} (3). The (H2_{2}dapp) occupies a helical twisted pentagonal equatorial arrangement with two anionic ligands in the axial positions. Further influence on the electronic and magnetic structure is provided by a closely associated counterion interacting with the central N−H group of the (H2_{2}dapp). The slow relaxation of the magnetisation shows that the anionic acetates give the greatest slowing down of the magnetisation reversal. Further influence on the relaxation properties of compounds1 and 2 is the presence of short nitrate-nitrate intermolecular ligand contact opening further lattice relaxation pathways

    Grape-Seed Polyphenolic Extract Improves the Eye Phenotype in a Drosophila Model of Tauopathy

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    Drosophila models of tauopathies have been developed by transgenically overexpressing the disease-associated forms of tau. In this paper we report for the first time that a recently developed Grape-Seed Polyphenolic Extract (GSPE) improves the eye phenotype of a Drosophila eye model of R406W tau. GSPE-mediated improvements in this distinct in vivo neurodegeneration model for protein misfolding/aggregation suggest that GSPE may have therapeutic value in disorders involving aberrant protein aggregation

    A cross-sectional survey of the access of older people in the Scottish Highlands to general medical practices, community pharmacies and prescription medicines.

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    Access to medicines and healthcare is more problematic in remote and rural areas. The purpose of this study was to quantify issues of access to general practitioners (GPs), community pharmacies and prescribed medicines in older people resident in the Scottish Highlands. Anonymized questionnaires were mailed to a random sample of 2000 older people (≥60 years) resident in the Scottish Highlands. Questionnaire items were: access and convenience to GP and pharmacy services (10 items); prescribed medicines (13 items); attitudinal statements based on the Theoretical Domains Framework (12 items); quality of life (SF8, 8 items); and demographics (12 items). Results were analysed using descriptive, inferential and spatial statistics, and principal component analysis (PCA) of attitudinal items. With a response rate of 54.2%, the majority reported convenient access to GPs (89.1%) and community pharmacies (84.3%). Older age respondents (p < 0.0001) were more likely to state that their access to GP services was not convenient and those in rural areas to community pharmacies (p < 0.01). For access to prescribed medicines, those in poorer health (p < 0.001) and taking five or more regular prescribed medicines (p = 0.002) were more likely to state access not convenient. PCA identified three components of beliefs of capabilities, emotions and memory. Those with poorer health had more negative scores for all (p < 0.001). Those reporting issues of access to prescribed medicines had more negative scores for beliefs of capabilities (p < 0.001) while those of older age, living alone, and taking five or more regular prescribed medicines (all p < 0.001) had more negative scores for emotions. In conclusion, while the majority of respondents have convenient access to their GP practice, pharmacy and prescribed medicines, there is a need for further review of the pharmaceutical care of those of older age with poorer health, living alone in the more remote and rural areas and taking five or more prescribed medicines
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