129 research outputs found

    Accounting for stress: a comparative analysis of corporate reporting on work-related stress by UK, German and Greek companies

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    Paper presented at 22nd CSEAR International Congress on Social and Environmental Accounting Research, St Andrews, 01 Sep 2010 - 03 Sep 2010Work-related stress seems to be on the rise in recent years, and the contemporary prolonged financial uncertainty appears to have further contributed to it. However there seems to be a lack of studies investigating associated corporate disclosures. This paper attempts to contribute to this area by exploring the reporting on work-related stress, by some of the largest companies in the UK, Germany and Greece, through an investigation of their annual and ‘stand-alone’ reports and websites. Although it was expected that the inherent cultural differences among the investigated organisations would trigger some diversity in their stress-related reporting, a, by and large, complete absence of such reporting is found, with organisations from all countries limiting their references to, utmost, lip-service. The paper moves on to suggest potential reasons for this profound lack of relevant disclosure and highlights ways forward

    COGNITIVE SCREENING TESTS FOR PATIENTS WITH EPILEPSY: A SYSTEMATIC REVIEW FOCUSING ON TEST VALIDITY AND DIAGNOSTIC ACCURACY

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    Epilepsy often affects cognition. The goal of this review was to systematically examine evidence for the validity of cognitive screening tests currently being used in epilepsy. MEDLINE and EMBASE databases were searched from 1946/1947 until the 12th of March 2019. Only studies that met the eligibility criteria and which reported at least some diagnostic accuracy data were included. Seven studies met the inclusion criteria, relating to five screening tools. The EpiTrack was the most commonly used tool, while the test most frequently used as a reference standard was the Digit Span. Diagnostic accuracy of cognitive screening tools in epilepsy remains limited and the risk of bias is generally high. EpiTrack is suggested as the appropriate screening tool to begin the assessment with, as it is specifically constructed for and validated on patients with epilepsy, it provides specific cutoff points and a satisfactory level of reliability

    Quantitative expression analysis of the apoptotic gene BCL2L12 in breast cancer: association with clinical and molecular prognostic parameters

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    Apoptosis is a highly orchestrated, genetically regulated form of cell death, the impairment of which is crucial in breast cancer (BC) development and progression. BCL2L12, a member of the BCL2 family of apoptosis-related genes, has been studied in various malignancies, revealing its potential role as a tumor biomarker. It has been recently found that BCL2L12 is subjected to alternative splicing, resulting in the generation of 13 alternatively spliced variants. The aim of this study was the quantification of BCL2L12 splice variants 1 and 2 (v.1 and v.2) expression at the mRNA level and the assessment of their biomarker potential in BC

    A novel HPLC method for the simultaneous determination of empagliflozin and dapagliflozin: Development, validation, robustness testing and greenness assessment

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    Empagliflozin (EMPA) and Dapagliflozin (DAPA) are mainly recommended for the treatment of type 2 diabetes mellitus and heart failure. Based on the principles of green analytical chemistry, a simple, rapid and robust HPLC method was developed for the determination of both analytes in bulk. An isocratic protocol was developed using a C18 column, with a mobile phase consisting of just 30% organic modifier (ACN), while the remaining 70% was HPLC water. The run was completed within 4 min, with a flow rate of 1.20 mL/min, while UV detection took place at 230 nm. The method was then validated according to the ICH Q2 (R1) guidelines, and all the parameters examined were within the specified limits. Furthermore, the robustness of the method was evaluated by employing a factorial experimental design. Finally, the environmental friendliness of the proposed method was assessed by using the Analytical GREEness (AGREE) metric tool. The proposed method can be used for analysis of EMPA and DAPA in bulk, with potential application to the relevant pharmaceuticals

    Neorogioltriol: A brominated diterpene with analgesic activity from Laurencia glandulifera

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    International audienceThe new tricyclic brominated diterpenoid, neorogioltriol (1), was isolated from the organic extract of the red alga Laurencia glandulifera, collected at Kefalonia Island in Western Greece. Assignment of the (1)H and (13)C NMR resonances were carried out by extensive analysis of its NMR spectra. The new metabolite was evaluated for its analgesic activity using the writhing test in mice and the formalin test in rats. A dose-dependant antiinociceptive response was observed in the writhing test at 0.5 and 1 mg/kg with an IC(50) of 12.5 mu g/kg. Compound 1 also inhibited the second phase of the formalin test. (c) 2008 Phytochemical Society of Europe Published by Elsevier B.V. All rights reserved

    In Vivo and in Vitro Anti-Inflammatory Activity of Neorogioltriol, a New Diterpene Extracted from the Red Algae Laurencia glandulifera

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    Neorogioltriol is a tricyclic brominated diterpenoid isolated from the organic extract of the red algae Laurencia glandulifera. In the present study, the anti-inflammatory effects of neorogioltriol were evaluated both in vivo using carrageenan-induced paw edema and in vitro on lipopolysaccharide (LPS)-treated Raw264.7 macrophages. The in vivo study demonstrated that the administration of 1 mg/kg of neorogioltriol resulted in the significant reduction of carregeenan-induced rat edema. In vitro, our results show that neorogioltriol treatment decreased the luciferase activity in LPS-stimulated Raw264.7 cells, stably transfected with the NF-κB-dependent luciferase reporter. This effect on NF-κB activation is not mediated through MAPK pathways. The inhibition of NF-κB activity correlates with decreased levels of LPS-induced tumor necrosis factor-alpha (TNFα) present in neorogioltriol treated supernatant cell culture. Further analyses indicated that this product also significantly inhibited the release of nitric oxide and the expression of cyclooxygenase-2 (COX-2) in LPS-stimulated Raw264.7 cells. These latter effects could only be observed for neorogioltriol concentrations below 62.5 μM. To our knowledge, this is the first report describing a molecule derived from Laurencia glandulifera with anti-inflammatory activity both in vivo and in vitro. The effect demonstrated in vitro may be explained by the inhibition of the LPS-induced NF-κB activation and TNFα production. NO release and COX-2 expression may reinforce this effect

    Variability of Non-Polar Secondary Metabolites in the Red Alga Portieria

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    Possible sources of variation in non-polar secondary metabolites of Portieria hornemannii, sampled from two distinct regions in the Philippines (Batanes and Visayas), resulting from different life-history stages, presence of cryptic species, and/or spatiotemporal factors, were investigated. PCA analyses demonstrated secondary metabolite variation between, as well as within, five cryptic Batanes species. Intraspecific variation was even more pronounced in the three cryptic Visayas species, which included samples from six sites. Neither species groupings, nor spatial or temporal based patterns, were observed in the PCA analysis, however, intraspecific variation in secondary metabolites was detected between life-history stages. Male gametophytes (102 metabolites detected) were strongly discriminated from the two other stages, whilst female gametophyte (202 metabolites detected) and tetrasporophyte (106 metabolites detected) samples were partially discriminated. These results suggest that life-history driven variations, and possibly other microscale factors, may influence the variation within Portieria species

    Effect of Elatol, Isolated from Red Seaweed Laurencia dendroidea, on Leishmania amazonensis

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    In the present study, we investigated the antileishmanial activity of sesquiterpene elatol, the major constituent of the Brazilian red seaweed Laurencia dendroidea (Hudson) J.V. Lamouroux, against L. amazonensis. Elatol after 72 h of treatment, showed an IC50 of 4.0 μM and 0.45 μM for promastigote and intracellular amastigote forms of L. amazonensis, respectively. By scanning and transmission electron microscopy, parasites treated with elatol revealed notable changes compared with control cells, including: pronounced swelling of the mitochondrion; appearance of concentric membrane structures inside the organelle; destabilization of the plasma membrane; and formation of membrane structures, apparently an extension of the endoplasmic reticulum, which is suggestive of an autophagic process. A cytotoxicity assay showed that the action of the isolated compound is more specific for protozoa, and it is not toxic to macrophages. Our studies indicated that elatol is a potent antiproliferative agent against promastigote and intracellular amastigote forms, and may have important advantages for the development of new anti-leishamanial chemotherapies
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