4 research outputs found

    Guidelines for the use and interpretation of assays for monitoring autophagy (4th edition)1.

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    In 2008, we published the first set of guidelines for standardizing research in autophagy. Since then, this topic has received increasing attention, and many scientists have entered the field. Our knowledge base and relevant new technologies have also been expanding. Thus, it is important to formulate on a regular basis updated guidelines for monitoring autophagy in different organisms. Despite numerous reviews, there continues to be confusion regarding acceptable methods to evaluate autophagy, especially in multicellular eukaryotes. Here, we present a set of guidelines for investigators to select and interpret methods to examine autophagy and related processes, and for reviewers to provide realistic and reasonable critiques of reports that are focused on these processes. These guidelines are not meant to be a dogmatic set of rules, because the appropriateness of any assay largely depends on the question being asked and the system being used. Moreover, no individual assay is perfect for every situation, calling for the use of multiple techniques to properly monitor autophagy in each experimental setting. Finally, several core components of the autophagy machinery have been implicated in distinct autophagic processes (canonical and noncanonical autophagy), implying that genetic approaches to block autophagy should rely on targeting two or more autophagy-related genes that ideally participate in distinct steps of the pathway. Along similar lines, because multiple proteins involved in autophagy also regulate other cellular pathways including apoptosis, not all of them can be used as a specific marker for bona fide autophagic responses. Here, we critically discuss current methods of assessing autophagy and the information they can, or cannot, provide. Our ultimate goal is to encourage intellectual and technical innovation in the field

    Corporate governance and intellectual capital reporting in a period of financial crisis: evidence from Portugal

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    This paper uses an analytical frame comprised of agency theory and a resource based perspective to explore the influence of boards of directors on listed companies’ voluntary disclosure of information concerning intellectual capital [IC]. The IC disclosures in 75 published company reports of 15 listed Portuguese companies in a five year period of financial crisis, 2007 to 2011, are investigated using content analysis and regression techniques. IC disclosures are found to increase with company size, dual corporate governance models, industry, listing on sustainability indexes, and increases in board size up to a maximum point (beyond which disclosures decrease). IC disclosures are reduced by CEO duality and by a higher proportion of independent directors on boards. The year of reporting is not significant, suggesting that the period of financial crisis did not influence the level of IC disclosures. The evidence adduced is consistent with a view that highly visible companies acknowledge the importance of IC disclosures in maintaining their reputation and competitive advantage, even during a period of financial crisis. This paper highlights the need for caution in believing that adding extra directors to an existing board will lead to improved disclosure outcomes. Additionally, given the token number of females appointed to boards currently, the Portuguese capital market regulator should consider enforcing measures to ensure compliance with EU objectives.info:eu-repo/semantics/publishedVersio
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