No abstract

Appreciative leadership and employee well-being in everyday working life ** This study examines the relationship between appreciative behavior and employee well-being on a daily basis. The theoretical rationale of our approach is based in leadership concepts emphasizing the relational aspect of leadership, and, more generally, in a framework that emphasizes the central role of threats, or boosts, to self-esteem (i.e., the concept of "Stress-as-Offense-to-Self" [SOS]). Qualitative and quantitative data of 139 employees working in different occupations were assessed during five consecutive workdays. First, based on event-sampling of appreciative situations, the nature of appreciative situations from the perspective of the employees, as it manifests itself in daily episodes, was examined. Simple praise and gratitude were the most frequent types of appreciative behavior reported. Besides leaders, customers and coworkers were frequent sources of appreciation as well. Second, the intra-individual effects of daily experiences of appreciation on employee well-being at the end of work were analyzed. Multi-level random coefficient modeling showed that daily appreciation by all sources significantly predicted serenity (i.e., a low-arousal / high pleasure type of well-being) at the end of work. As serenity is likely to affect recovery, which, in turn, may affect health and performance, our findings show that for leaders, but not only for leaders, displaying elementary appreciative behavior is a simple but important tool for enhancing employee health and well-being.

PURPOSE. Cytokines play an important role in cell signaling in inflammatory and repair processes, also within the posterior segment of the eye. These molecules are thus implicated in the pathophysiology of several vitreoretinal diseases. In the present study, we compared vitreal cytokine profiles in patients with idiopathic epiretinal membranes (ERMs) and idiopathic full-thickness macular holes (MHs) without epiretinal membranes.METHODS. Native vitreal humor was collected during elective pars plana vitrectomy for the treatment of macular pathologies (group 1: ERM; group 2: MH) from patients without any other ocular or systemic disease. The concentrations of 43 chemokines and cytokines were measured in parallel by multiplex beads analysis. Intergroup comparisons were conducted using the Mann-Whitney U test and Bonferroni's correction, at a level of significance of P < 0.0012. RESULTS.Vitreal samples from 31 patients with ERMs (group 1) and from 30 with MHs (group 2) were analyzed. For 12 of the tested cytokines (GM-CSF, MCP-1, MIF, CCL15, CCL20, CCL17, CX3CL1, CXCL10, CXCL16, and TGF-b-1, -2, and -3), no intergroup differences were revealed; for the other 31, the concentrations were higher in the ERM than in the MH group (P < 0.0012 in each case).CONCLUSIONS. The vitreal levels of 72% of the tested cytokines were higher in ERM than in MH. This indicates that even in the absence of clinical markers, activation of inflammatory and profibrotic mechanisms is implicated in the progression of ERMs. Although frequently used as such in the past, eyes with ERMs should be considered with caution as a healthy control group.