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Melton posted an update 7 months, 1 week ago
Layered double hydroxide nanoparticles (LDH-NPs) constitute promising nanocarriers for drug and gene delivery. Although their cell internalization has been studied, the interaction between LDH-NPs and biological membrane models, such as giant unilamellar vesicles (GUVs), remains unexplored. These vesicles are widely-used membrane models that allow minimizing the complexity and uncertainty associated with biological systems to study the physical interactions in the absence of cell metabolism effects. With such an approach the physicochemical properties of the membrane can be differentiated from the biological functionalities involved in cell internalization and the membrane-mediated internalization can be directly understood. In this work, we describe for the first time the interaction of LDH-NPs with freestanding negatively charged POPCPOPS GUVs by fluorescence microscopy. 740 Y-P The experiments were performed with fluorescein labeled LDH-NPs of about 100 nm together with different fluorophores in order to evaluate the NPs interactions with the vesicles as well as their impact on the membrane morphology and permeability. Positively charged LDH-NPs are electrostatically accumulated at the GUVs membrane, altering its lateral phospholipid distribution and increasing the stiffness and permeability of the membrane. The adsorption of albumin (LDH@ALB) or polyacrylic acid (LDH@PA) passivates the surface of LDH-NPs eliminating long-range electrostatic attraction. The absence of membrane-mediated internalization of either LDH@ALB or LDH@PA, represents an advantage in the use of LDH-NPs as drug or nucleic acids nanocarriers, because suitable functionalization will allow an optimal cell targeting. Diabetes is a chronic illness with individual, social, and structural-level factors that contribute to its successful management. This paper utilizes conversation analysis to analyze a corpus of 60 audiotaped adult doctor-patient interactions. We examine how patients with diabetes and their physicians discuss blood glucose level management, including how physicians present patients with their test results and how patients respond to these presentations given the possible moral orientation around these activities. We show that physicians are more likely to present “good” blood sugar levels using assessments that explicitly evaluate the patients’ condition. Contrastingly, physicians present “bad” glucose levels using report formats of numerical values alone. Interactionally, this requires that patients respond to these numbers by making sense of or accounting for their glucose level. The different practices of discussing blood glucose levels suggests that physicians approach this topic cautiously. This sensitivity balances epistemic asymmetry and may help physicians avoid direct moral characterizations of their patients. Our analysis connects interactional practices to the continuous negotiation of both medical epistemic responsibility and morality between physicians and patients with diabetes as well as the implications this may have in the medical management of this illness. Published by Elsevier Ltd.Although Japan and South Korea share a number of commonalities, social security systems are very different. We opt to compare socioeconomic disparities in self-rated health between these two countries. The analytic sample included those aged 20 years and older from the nationally representative surveys in Japan (Comprehensive Survey of Living Conditions) and South Korea (Korean Community Health Survey). As socioeconomic status, we used income (quintiles of equivalized annual household income) and education (five categories). We measured socioeconomic inequalities using two indices; the Slope Index of Inequality (SII) and the Relative Index of Inequality (RII), in each age group for each country. In Japan, we found relatively little evidence of socioeconomic inequalities in self-rated health over the life course, on either the absolute or relative scale. In Korea, the absolute inequality assessed by SII of self-rated poor health was higher in middle and old age groups compared to other age groups, while relative inequality measured by RII was significantly higher in younger ages. In Japan with more generous welfare system to the older generations, health inequality was relatively lower compared to Korea. The gaps in health status for Korean people suggest where social policy might direct their efforts in the future – (a) reducing inequalities in working-age people by addressing the gap between standard workers & non-standard workers; and (b) improving the financial conditions of older people by shoring up the social security system. Trust is vital in mental healthcare where uncertainty and risk prevail and where relationship building is central to effective service delivery. Despite its significance, research on trust, particularly among multi-disciplinary healthcare teams and between service providers and users is limited and explored only tangentially within early psychosis intervention (EPI) programs. An institutional ethnographic approach is used to examine how trust within an EPI setting is produced and operates. Drawing on participant observation, textual analysis of clinic documents and in-depth interviews with 27 participants (staff, young people and family members), our analysis outlines how the clinic manager’s and staff’s resistance to hospital rulings that impeded EPI policy principles were part of the extended sequence of activities that produced trust. These acts of resistance, alongside the clinic manager’s reflective leadership practices, cultivated spaces for staff to take risks, share their ideas and build consensus – culminating in staff-designed protocols that produced trust among one another, and between service providers and young people and their families. Drawing from Brown and Calnan’s framework of “vicious” and “virtuous” cycles of (dis)trust, we highlight how management and staff responses to vulnerability and uncertainty generated trust through their communication practices and knowledge sharing. We also suggest that protocols to manage the risk of medication non-adherence and treatment dis-engagement among young people contained regulatory functions, pointing to the complex interplay of trust, control and risk. Study implications suggest shifting the emphasis from risk management and quality governance as an organizing framework in mental health to a framework based on trust.