Competing logics in evaluating employee performance: Building compromises through conventions

Recent interest in institutional complexity has raised the question how organizations manage rival institutional logics. In this paper we argue that organizations can embed compromises between institutional logics in conventions that impart information how organization members should align competing logics. Using the case of performance appraisal reform in a German public sector organization, we illustrate how a convention aligns accountability and professional logic and show how the compromise between these competing logics is established over time. By introducing the concept of convention, we provide an alternative to research that studies coexistence of logics in organizations as a result of organization members with different identities

Effects of resistin on porcine ovarian follicle steroidogenesis in prepubertal animals : an in vitro study

Background: Resistin was first reported to be an adipocyte-specific hormone, but recent studies have indicated a connection between resistin and reproductive function. However, it is not yet known if resistin is expressed by the ovary and if it can affect steroidogenesis in ovarian follicles from prepubertal pigs. Methods: In this study, using real time PCR, immunoblotting, and ELISA, we quantified resistin expression and concentration in maturing ovarian follicles (small, 3–4 mm; medium, 4–5 mm; large, 6–7 mm) collected from prepubertal pigs. In addition, the dose-responsive effects of recombinant human resistin (0.1, 1, 10, and 100 ng/ml) on steroid hormone (i.e., progesterone [P4], androstendione [A4], testosterone [T], and estradiol [E2]) secretion in culture medium and steroidogenic enzyme (i.e., CYP11A1, 3betaHSD, CYP17A1, 17betaHSD, and CYP19A1) expression in ovarian follicles were determined. Results: We observed that resistin gene and protein expression increased significantly (P < 0.05) during follicular growth, with large follicles expressing the highest level of this adipokine. Recombinant resistin also increased P4, A4, and T secretion by up-regulating the steady state levels of CYP11A1, 3betaHSD, CYP17A1, and 17betaHSD. Recombinant resistin had no effects on E2 secretion and CYP19A1 expression in ovarian follicles. Conclusion: Our results show resistin expression in ovarian follicles from prepubertal pigs for the first time. We also show that recombinant resistin stimulates steroidogenesis in ovarian follicles by increasing the expression of CYP11A1, 3betaHSD, CYP17A1, and 17betaHSD. The presence of resistin in the porcine ovary and its direct effects on steroidogenesis suggest that resistin is a new regulator of ovary function in prepubertal animals

3D visualization of extracellular vesicle uptake by endothelial cells

Abstract Background Extracellular vesicles are small vesicles that contain cytoplasmic and membrane components from their paternal cells. They enter target cells through uptake to transfer their biological cargo. In this study, we investigated the process of endothelial EV internalization and created a 3D visualization of their intracellular distribution. Methods and results Two immortalized endothelial cell lines that express h-TERT (human telomerase) were used for EV release: microvascular TIME and macrovascular HUVEC. EVs were isolated from the cell culture medium via differential centrifugation and used for the uptake experiments. The size distribution of the EVs was measured using TRPS technology on a qNano instrument. Internalization of EVs was observed using a Zeiss LSM 710 confocal laser microscope after staining of the EVs with PKH26. EVs were observed intracellularly and distributed in the perinuclear region of the target cells. The distribution patterns were similar in both cell lines. Conclusion The perinuclear localization of the internalized EVs shows their biological stability after their uptake to the endothelial cells. The 3D visualization allows the determination of a more accurate location of EVs relative to the donor cell nucleus

Comparison of qNANO results from the isolation of extracellular microvesicles with the theoretical model

Objectives: Extracellular vesicles (EVs) are heterogeneous membrane vesicles in diameter of 30-5000 nm, that transport proteins, non-coding RNAs (miRNAs), lipids and metabolites. Major populations include exosomes, ectosomes and apoptotic bodies. The purpose of this study was to compare the distribution of EVs obtained under different conditions of differential centrifugation, including ultracentrifugation, with the results developed based on a theoretical model. Methods: Immortalized endothelial cell line that expresses h-TERT (human telomerase) was used to release of EVs: microvascular TIME. EVs were isolated from the culture medium at different centrifugation parameters. The size distribution of the EVs was measured using TRPS technology on a qNano instrument. Surface markers were evaluated using flow cytometry. The isolated EV subpopulations were compared with the theoretical model developed by Livshits. Results: EVs isolated from endothelial cells show strong aggregating properties, which was confirmed by TEM, TRPS imaging and flow cytometry. Conclusions: Obtaining pure EV subpopulations is difficult because of the small differences in the diameter of ectosomes and exosomes, and the strong aggregating properties of EVs

Genetic identification of alien larch taxa : the case of the Tatra National Park

The natural consequences of introducing alien species can be significant. This is particularly a concern where the taxa have an invasive nature of spreading or in those that freely crossbreed with native species. The hybridization process may lead to impoverishment or even loss of the native gene pool. This is especially dangerous in unique areas that stand out due to their special natural characteristics, such as the Tatra National Park. The determination of the scale of occurrence of alien larch species in the national park and the evaluation of the genetic diversity of the native population is crucial for the conservation of genetic resources and strictly adheres to the latest conservation genetics trends. We evaluated the possibility of effective use of molecular markers for taxonomic identification of the native European larch (Larix decidua Mill.), as well as the alien Japanese larch (Larix kaempferi [Lambert] Carriere) and the hybrid form (Larix × eurolepis Henry). Microsatellite markers were used to analyse the genetic diversity of individuals identified as European larch from natural refuges and artificial plantings. Of the 148 trees analysed, 105 were identified as the European larch, 38 as Japanese larch, and five as hybrids. The analysis of the molecular variability of two European larch groups of indigenous and artificial origin showed comparable level of diversity. This study confirmed the effectiveness of the use of selected molecular markers in identification of larch species, which is difficult based on morphological traits. The results indicate the possibility for the effective use of genetic tools in the creation of protection programmes, especially for naturally valuable sites, based on genetic taxonomic identification and richness verification of protected gene pools

A modified method for molecular identification of Baylisascaris transfuga in European brown bears (Ursus arctos)

Baylisascaris transfuga is a roundworm that has been reported worldwide in most bear species. In mammals and possibly humans, the larvae of B. transfuga can migrate in the tissues of aberrant hosts with larva migrans syndrome. The current study was performed to identify B. transfuga in faecal samples from free-ranging brown bears in the Tatra Mountains National Park in southern Poland. A commercial kit was used to extract genomic DNA directly from faecal samples. Additionally, a Chelex resin-based technique was successfully implemented to prepare a PCR template from eggs retrieved by flotation. Based on the flotation results of 32 collected faecal samples, the prevalence of B. transfuga was 15.6%. The parasite was confirmed in samples found to be positive during the initial flotation by a molecular assay using DNA isolated directly from faeces. The retrieved eggs were confirmed as B. transfuga after their DNA was extracted using the Chelex protocol. Based on PCR amplification and sequencing of a 413-bp segment of cytochrome c oxidase 1 (COI), the obtained sequence was 100% identical to the COI segment of B. transfuga after a BLAST comparison to the GenBank™ database. The current study includes the first molecular confirmation of B. transfuga in brown bears in the western part of the Carpathians. We show that direct extraction of parasite DNA from bear faeces is efficient for molecular assays. As an alternative, we present the effectiveness of a Chelex-based technique for fast and convenient DNA isolation from the difficult-to-disrupt eggs of B. transfuga for PCR. Molecular tests of parasite DNA extracted directly from faecal material have limits of detection related to the amount of eggs in the samples. Thus, using classical flotation to obtain eggs for PCR may increase the credibility of the results, particularly in cases with a low number of excreted eggs. The Chelex resin protocol has potential for application in studies of intestinal parasites in wildlife for which conventional flotation is routinely used for microscopy

A modified method for molecular identification of Baylisascaris transfuga in European brown bears (Ursus arctos)

Baylisascaris transfuga is a roundworm that has been reported worldwide in most bear species. In mammals and possibly humans, the larvae of B. transfuga can migrate in the tissues of aberrant hosts with larva migrans syndrome. The current study was performed to identify B. transfuga in faecal samples from free-ranging brown bears in the Tatra Mountains National Park in southern Poland. A commercial kit was used to extract genomic DNA directly from faecal samples. Additionally, a Chelex resin-based technique was successfully implemented to prepare a PCR template from eggs retrieved by flotation. Based on the flotation results of 32 collected faecal samples, the prevalence of B. transfuga was 15.6%. The parasite was confirmed in samples found to be positive during the initial flotation by a molecular assay using DNA isolated directly from faeces. The retrieved eggs were confirmed as B. transfuga after their DNA was extracted using the Chelex protocol. Based on PCR amplification and sequencing of a 413-bp segment of cytochrome c oxidase 1 (COI), the obtained sequence was 100% identical to the COI segment of B. transfuga after a BLAST comparison to the GenBank™ database. The current study includes the first molecular confirmation of B. transfuga in brown bears in the western part of the Carpathians. We show that direct extraction of parasite DNA from bear faeces is efficient for molecular assays. As an alternative, we present the effectiveness of a Chelex-based technique for fast and convenient DNA isolation from the difficult-to-disrupt eggs of B. transfuga for PCR. Molecular tests of parasite DNA extracted directly from faecal material have limits of detection related to the amount of eggs in the samples. Thus, using classical flotation to obtain eggs for PCR may increase the credibility of the results, particularly in cases with a low number of excreted eggs. The Chelex resin protocol has potential for application in studies of intestinal parasites in wildlife for which conventional flotation is routinely used for microscopy

Effectiveness and implementation of an obesity prevention intervention: the HeLP-her Rural cluster randomised controlled trial

To impact on the obesity epidemic, interventions that prevent weight gain across populations are urgently needed. However, even the most efficacious interventions will have little impact on obesity prevention unless they are successfully implemented in diverse populations and settings. Implementation research takes isolated efficacy studies into practice and policy and is particularly important in obesity prevention where there is an urgent need to accelerate the evidence to practice cycle. Despite the recognised need, few obesity prevention interventions have been implemented in real life settings and to our knowledge rarely target rural communities

Feasibility and Acceptability of a Pilot Knowledge Translation Telementoring Program for Allied Health Professionals

Purpose: Knowledge translation (KT) in the health system is critical for the delivery of evidence-based practice. Supporting allied health professionals to plan and implement KT, using strategies that broadly reach across multiple geographical locations of the workforce, are needed. We piloted KT group telementoring via videoconference as an innovative solution to support and empower a vastly dispersed workforce. Methods: The 6-month Knowledge Translation Support Service (KTSS) involved monthly, one-hour, virtual group-based support of clinician-led KT projects within state-run hospital and health services. Supported by an independent facilitator, a panel of KT experts and health service leaders provided constructive critique and KT support for four projects from various disciplines (dietetics, nursing, occupational therapy, physiotherapy and social work) and health districts. Process evaluation included an assessment of program fidelity, dose delivered and engagement. Program acceptability (participants and panel members) was assessed after each session through online surveys. Effectiveness was captured by survey of KT confidence and qualitative interviews of participants perceived benefits of participation. Results: All project leads attended each meeting, with 1-2 specific projects discussed each month. On completion, participants reported high program satisfaction and felt that the KTSS met their expectations and learning needs. Overall the participants described beneficial gains with confidence in KT skills. Conclusions: The telementoring offered exposure to a breadth of expertise not normally accessible, successfully built a team environment in the virtual space and had a positive impact on project progression. Future directions include investing in scalability and sustainability of telementoring strategies for KT support

Zoonoze u Zeničko-dobojskoj županiji i Federaciji Bosne i Hercegovine

Ciljevi istraživanja bili su: ukazati na značaj zoonoza u ljudi te istražiti koje se zoonoze u ljudi najčešće javljaju u Zeničko-dobojskoj županiji (ZDŽ) i Federaciji Bosne i Hercegovine (FBiH), tijekom desetogodišnjeg razdoblja (2010. – 2019. godine). Materijal i metode. U svrhu istraživanja korišteni su podatci o osam najučestalih zoonoza (salmoneloze, bruceloza, leptospiroza, Q-groznica, hemoragijska groznica s renalnim sindromom, borelioza, ehinokokoza, listerioza), temeljem prijava Instituta za zdravlje i sigurnost hrane Zenica i Federalnog zavoda za javno zdravstvo. Dijagnoze su postavljene klinički, mikrobiološki i/ili epidemiološki. Rezultati. Tijekom desetogodišnjeg razdoblja u ZDŽ prijavljena je 871 zoonoza. Najviše (191/871; 21,9%) prijavljenih bilo je 2019. godine. Najučestalija zoonoza bila je salmoneloza (343/871; 39,4%; 95,3/100.000 stanovnika), a zatim slijedi bruceloza (323/871; 37,1%; 87,7/100.000). Najčešća zoonoza u FBiH je salmoneloza (2.764/5.219; 53%; 125,6/100.000). Na drugom mjestu je bruceloza (1.505/5.219; 28,8%; 68,4/100.000). Leptospiroza (386/5.219; 7,4%; 17,5/100.000), Q-groznica (203/5.219; 3,9%; 9,2/100.000) i hemoragijska groznica s renalnim sindromom (164/5.219; 3,1%; 7,5/100.000) javljaju se povremeno, u vidu manjih ili većih epidemija. Ostale zoonoze javljaju se sporadično. Zaključak. Zoonoze su od posebnoga javnozdravstvenog značaja i zahtijevaju blisku interdisciplinarnu suradnju različitih profila stručnjaka (iz područja medicine, veterine, šumarstva, biologije, zoologije, ekologije), poduzimanje učinkovitih mjera u nadzoru i suzbijanju te proučavanju i znanstvenom istraživanju tih bolesti