| 1. |
- Backmark, Anna, 1979, et al.
(författare)
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Affinity tags can reduce merohedral twinning of membrane protein crystals
- 2008
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Ingår i: Acta Crystallographica. Section D: Biological Crystallography. - 1399-0047 .- 0907-4449. ; D64, s. 1183-1186
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Tidskriftsartikel (refereegranskat)abstract
- This work presents a comparison of the crystal packing of three eukaryotic membrane proteins: human aquaporin 1, human aquaporin 5 and a spinach plasma membrane aquaporin. All were purified from expression constructs both with and without affinity tags. With the exception of tagged aquaporin 1, all constructs yielded crystals. Two significant effects of the affinity tags were observed: crystals containing a tag typically diffracted to lower resolution than those from constructs encoding the protein sequence alone and constructs without a tag frequently produced crystals that suffered from merohedral twinning. Twinning is a challenging crystallographic problem that can seriously hinder solution of the structure. Thus, for integral membrane proteins, the addition of an affinity tag may help to disrupt the approximate symmetry of the protein and thereby reduce or avoid merohedral twinning.
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| 2. |
- Rödström, Karin, et al.
(författare)
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Structure of the Superantigen Staphylococcal Enterotoxin B in Complex with TCR and Peptide-MHC Demonstrates Absence of TCR-Peptide Contacts.
- 2014
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Ingår i: Journal of Immunology. - : The American Association of Immunologists. - 1550-6606 .- 0022-1767. ; 193:4, s. 1998-2004
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Tidskriftsartikel (refereegranskat)abstract
- Superantigens are immune-stimulatory toxins produced by Staphylococcus aureus, which are able to interact with host immune receptors to induce a massive release of cytokines, causing toxic shock syndrome and possibly death. In this article, we present the x-ray structure of staphylococcal enterotoxin B (SEB) in complex with its receptors, the TCR and MHC class II, forming a ternary complex. The structure, in combination with functional analyses, clearly shows how SEB adopts a wedge-like position when binding to the β-chain of TCR, allowing for an interaction between the α-chain of TCR and MHC. Furthermore, the binding mode also circumvents contact between TCR and the peptide presented by MHC, which enables SEB to initiate a peptide-independent activation of T cells.
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| 3. |
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| 4. |
- Banke, Elin, et al.
(författare)
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Superantigen activates the gp130 receptor on adipocytes resulting in altered adipocyte metabolism.
- 2014
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Ingår i: Metabolism, Clinical and Experimental. - : Elsevier BV. - 1532-8600. ; 63:6, s. 831-840
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Tidskriftsartikel (refereegranskat)abstract
- The bacteria Staphylococcus aureus is part of the normal bacterial flora and produces a repertoire of enterotoxins which can cause food poisoning and toxic shock and might contribute to the pathogenesis of inflammatory diseases. These enterotoxins directly cross-link the T cell receptor with MHC class II, activating large amounts of T cells and are therefore called superantigens. It was recently discovered that the superantigen SEA binds to the cytokine receptor gp130. As obesity and type 2 diabetes are highly associated with inflammation of the adipose tissue and gp130 has been shown to play an important role in adipocytes, we wanted to investigate the effect of SEA on adipocyte signaling and function.
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| 5. |
- Bölenius, Karin, et al.
(författare)
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Impact of a large-scale educational intervention program on venous blood specimen collection practices
- 2013
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Ingår i: BMC Health Services Research. - : BioMed Central. - 1472-6963. ; 13
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Phlebotomy performed with poor adherence to venous blood specimen collection (VBSC) guidelines jeopardizes patient safety and may lead to patient suffering and adverse events. A first questionnaire study demonstrated low compliance to VBSC guidelines, motivating an educational intervention of all phlebotomists within a county council. The aim was to evaluate the impact of a large-scale educational intervention program (EIP) on primary health care phlebotomists' adherence to VBSC guidelines. We hypothesised that the EIP would improve phlebotomists' VBSC practical performance.METHODS: The present study comprise primary health care centres (n = 61) from two county councils in northern Sweden. The final selected study group consisted of phlebotomists divided into an intervention group (n = 84) and a corresponding control group (n = 79). Both groups responded to a validated self-reported VBSC questionnaire twice. The EIP included three parts: guideline studies, an oral presentation, and an examination. Non-parametric statistics were used for comparison within and between the groups.RESULTS: Evaluating the EIP, we found significant improvements in the intervention group compared to the control group on self-reported questionnaire responses regarding information search (ES = 0.23-0.33, p < 0.001-0.003), and patient rest prior to phlebotomy (ES = 0.27, p = 0.004). Test request management, patient identity control, release of venous stasis, and test tube labelling had significantly improved in the intervention group but did not significantly differ from the control group (ES = 0.22- 0.49, p = < 0.001- 0.006). The control group showed no significant improvements at all (ES = 0--0.39, p = 0.016-0.961).CONCLUSIONS: The present study demonstrated several significant improvements on phlebotomists' adherence to VBSC practices. Still, guideline adherence improvement to several crucial phlebotomy practices is needed. We cannot conclude that the improvements are solely due to the EIP and suggest future efforts to improve VBSC. The program should provide time for reflections and discussions. Furthermore, a modular structure would allow directed educational intervention based on the specific VBSC guideline flaws existing at a specific unit. Such an approach is probably more effective at improving and sustaining adherence to VBSC guidelines than an EIP containing general pre-analytical practices.
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| 6. |
- Edvardsson, David, et al.
(författare)
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The Umeå Ageing and health research programme (U-age) : exploring person-centred care and health promoting living conditions for an ageing population
- 2016
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Ingår i: Nordic journal of nursing research. - : Sage Publications. - 2057-1585 .- 2057-1593. ; 36:3, s. 168-174
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this article is to describe the Umeå ageing and health research programme that explores person-centred care and health-promoting living conditions for an ageing population in Sweden, and to place this research programme in a national and international context of available research evidence and trends in aged care policy and practice. Contemporary trends in aged care policy includes facilitating ageing in place and providing person-centred care across home and aged care settings, despite limited evidence on how person-centred care can be operationalised in home care services and sheltered housing accommodation for older people. The Umeå ageing and health research programme consists of four research projects employing controlled, cross-sectional and longitudinal designs across ageing in place, sheltered housing, and nursing homes. The research programme is expected to provide translational knowledge on the structure, content and outcomes of person-centred care and health-promoting living conditions in home care, sheltered housing models, and nursing homes for older people and people with dementia.
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| 7. |
- Elbing, Karin, 1974, et al.
(författare)
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Towards the structure-function-specificity relationship of glucose transporters
- 2010
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Ingår i: FEBS Journal, Special issue: Abstracts of the 35th FEBS Congress, Gothenburg, Sweden, 26 June - 1 July 2010. - 1742-464X. ; 277, supplement 1, s. 209-210
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Glucose plays a central role in nutrient sensing and signalling and its uptake through facilitated diffusion is mediated by membrane associated glucose transporters, GLUT proteins in mammals and Hxt proteins in the yeast S. cerevisiae. These proteins belong to the Major Facilitator Superfamily (MFS), which is present in all studied organisms. They transport a wide range of solutes such as amino acids, sugars, nucleotides, drugs, peptides, organic and inorganic anions, metabolites, neurotransmitters, polyols etc. All MFS proteins structurally investigated have been purified from their natural sources and successful heterologous production has not yet been reported. While there is a wealth of reports in the literature on mutagenesis studies, to analyze the structure-function relationship of glucose transporters, there are no three dimensional structures available. Our research goal is to achieve a more detailed understanding of the structure-function-specificity relationship of glucose transporters. To achieve this overall goal we have successfully expressed mammalian GLUTs and yeast Hxts in yeast. Initial solubilsation trials suggest that Brij35 solubilises GLUT4. Purification and crystallization analyses of the target proteins are ongoing.
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| 8. |
- Eriksson, Stefanie, et al.
(författare)
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NMR quantification of diffusional exchange in cell suspensions with relaxation rate differences between intra and extracellular compartments
- 2017
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Ingår i: PLoS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 12:5
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Tidskriftsartikel (refereegranskat)abstract
- Water transport across cell membranes can be measured non-invasively with diffusion NMR. We present a method to quantify the intracellular lifetime of water in cell suspensions with short transverse relaxation times, T2, and also circumvent the confounding effect of different T2 values in the intra- and extracellular compartments. Filter exchange spectroscopy (FEXSY) is specifically sensitive to exchange between compartments with different apparent diffusivities. Our investigation shows that FEXSY could yield significantly biased results if differences in T2 are not accounted for. To mitigate this problem, we propose combining FEXSY with diffusion-relaxation correlation experiment, which can quantify differences in T2 values in compartments with different diffusivities. Our analysis uses a joint constrained fitting of the two datasets and considers the effects of diffusion, relaxation and exchange in both experiments. The method is demonstrated on yeast cells with and without human aquaporins.
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| 9. |
- Hedlund, Gunnar, et al.
(författare)
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The Tumor Targeted Superantigen ABR-217620 Selectively Engages TRBV7-9 and Exploits TCR-pMHC Affinity Mimicry in Mediating T Cell Cytotoxicity.
- 2013
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Ingår i: PLoS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 8:10
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Tidskriftsartikel (refereegranskat)abstract
- The T lymphocytes are the most important effector cells in immunotherapy of cancer. The conceptual objective for developing the tumor targeted superantigen (TTS) ABR-217620 (naptumomab estafenatox, 5T4Fab-SEA/E-120), now in phase 3 studies for advanced renal cell cancer, was to selectively coat tumor cells with cytotoxic T lymphocytes (CTL) target structures functionally similar to natural CTL pMHC target molecules. Here we present data showing that the molecular basis for the anti-tumor activity by ABR-217620 resides in the distinct interaction between the T cell receptor β variable (TRBV) 7-9 and the engineered superantigen (Sag) SEA/E-120 in the fusion protein bound to the 5T4 antigen on tumor cells. Multimeric but not monomeric ABR-217620 selectively stains TRBV7-9 expressing T lymphocytes from human peripheral blood similar to antigen specific staining of T cells with pMHC tetramers. SEA/E-120 selectively activates TRBV7-9 expressing T lymphocytes resulting in expansion of the subset. ABR-217620 selectively triggers TRBV7-9 expressing cytotoxic T lymphocytes to kill 5T4 positive tumor cells. Furthermore, ABR-217620 activates TRBV7-9 expressing T cell line cells in the presence of cell- and bead-bound 5T4 tumor antigen. Surface plasmon resonance analysis revealed that ABR-217620 binds to 5T4 with high affinity, to TRBV7-9 with low affinity and to MHC class II with very low affinity. The T lymphocyte engagement by ABR-217620 is constituted by displaying high affinity binding to the tumor cells (KD approximately 1 nM) and with the mimicry of natural productive immune TCR-pMHC contact using affinities of around 1 µM. This difference in kinetics between the two components of the ABR-217620 fusion protein will bias the binding towards the 5T4 target antigen, efficiently activating T-cells via SEA/E-120 only when presented by the tumor cells.
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| 10. |
- Hofvander, Jakob, et al.
(författare)
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Frequent low-level mutations of protein kinase D2 in angiolipoma
- 2017
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Ingår i: Journal of Pathology. - : WILEY. - 0022-3417 .- 1096-9896. ; 241:5, s. 578-582
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Tidskriftsartikel (refereegranskat)abstract
- Tumours displaying differentiation towards normal fat constitute the most common subgroup of soft tissue neoplasms. A series of such tumours was investigated by whole-exome sequencing followed by targeted ultra-deep sequencing. Eighty per cent of angiolipomas, but not any other tumour type, displayed mutations in the protein kinase D2 (PRKD2) gene, typically in the part encoding the catalytic domain. The absence of other aberrations at the chromosome or RNA level suggests that PRKD2 mutations are critical for angiolipoma development. Consistently, the mutated PRKD2 alleles were present at low (3-15%) frequencies, indicating that only a subset of the tumour cells is affected. Indeed, by sequencing mature fat cells and other cells separately, the former typically showed the highest mutation frequencies. Thus, we hypothesize that altered PRKD2 signalling in the adipocytic cells drives tumourigenesis and, in agreement with its pivotal role in angiogenesis, induces the vessel formation that is characteristic for angiolipoma. Copyright (c) 2016 Pathological Society of Great Britain and Ireland. Published by John Wiley amp; Sons, Ltd.
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| 11. |
- Nilsson, Karin, et al.
(författare)
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Associations between workplace affiliation and phlebotomy practices regarding patient identification and test request handling practices in primary healthcare centres : a multilevel model approach
- 2015
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Ingår i: BMC Health Services Research. - : Springer Science and Business Media LLC. - 1472-6963. ; 15
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Tidskriftsartikel (refereegranskat)abstract
- Background: Clinical practice guidelines aim to enhance patient safety by reducing inappropriate variations in practice. Despite considerable efforts to enhance the use of clinical practice guidelines, adherence is often suboptimal. We investigated to what extent workplace affiliation explains variation of self-reported adherence to venous blood specimen collection regarding patient identification and test request handling practices, taking into consideration other primary healthcare centre and individual phlebotomist characteristics. Methods: Data were collected through a questionnaire survey of 164 phlebotomy staff from 25 primary healthcare centres in northern Sweden. To prevent the impact of a large-scale education intervention in 2008, only baseline data, collected over a 3-month period in 2006-2007, were used and subjected to descriptive statistics and multilevel logistic analyses. Results: In two patient identification outcomes, stable high median odds ratios (MOR) were found in both the empty model, and in the adjusted full model including both individual and workplace factors. Our findings suggest that variances among phlebotomy staff can be largely explained by primary healthcare centre affiliation also when individual and workplace demographic characteristics were taken in consideration. Analyses showed phlebotomy staff at medium and large primary healthcare centres to be more likely to adhere to guidelines than staff at small centres. Furthermore, staff employed shorter time at worksite to be more likely to adhere than staff employed longer. Finally, staff performing phlebotomy every week or less were more likely to adhere than staff performing phlebotomy on a daily basis. Conclusion: Workplace affiliation largely explains variances in self-reported adherence to venous blood specimen collection guidelines for patient identification and test request handling practices among phlebotomy staff. Characteristics of the workplace, as well as of the individual phlebotomist, need to be identified in order to design strategies to improve clinical practice in this and other areas.
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| 12. |
- Nyblom, Anna Maria, 1975, et al.
(författare)
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Exceptional overproduction of a functional human membrane protein
- 2007
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Ingår i: Protein Expression and Purification. - : Elsevier BV. - 1046-5928 .- 1096-0279. ; 56:1, s. 110-120
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Tidskriftsartikel (refereegranskat)abstract
- Eukaryotic-especially human-membrane protein overproduction remains a major challenge in biochemistry. Heterologously overproduced and purified proteins provide a starting point for further biochemical, biophysical and structural studies, and the lack of sufficient quantities of functional membrane proteins is frequently a bottleneck hindering this. Here, we report exceptionally high production levels of a correctly folded and crystallisable recombinant human integral membrane protein in its active form; human aquaporin 1 (hAQP1) has been heterologously produced in the membranes of the methylotrophic yeast Pichia pastoris. After solubilisation and a two step purification procedure, at least 90 mg hAQP1 per liter of culture is obtained. Water channel activity of this purified hAQP was verified by reconstitution into proteoliposomes and performing stopped-flow vesicle shrinkage measurements. Mass spectrometry confirmed the identity of hAQPI in crude membrane preparations, and also from purified protein reconstituted into proteoliposomes. Furthermore, crystallisation screens yielded diffraction quality crystals of untagged recombinant hAQP1. This study illustrates the power of the yeast P. pastoris as a host to produce exceptionally high yields of a functionally active, human integral membrane protein for subsequent functional and structural characterization. (c) 2007 Elsevier Inc. All rights reserved.
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| 13. |
- Palmgren, Madelene, et al.
(författare)
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Quantification of the Intracellular Life Time of Water Molecules to Measure Transport Rates of Human Aquaglyceroporins
- 2017
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Ingår i: Journal of Membrane Biology. - : Springer Science and Business Media LLC. - 0022-2631 .- 1432-1424. ; 250:6, s. 629-639
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Tidskriftsartikel (refereegranskat)abstract
- Orthodox aquaporins are transmembrane channel proteins that facilitate rapid diffusion of water, while aquaglyceroporins facilitate the diffusion of small uncharged molecules such as glycerol and arsenic trioxide. Aquaglyceroporins play important roles in human physiology, in particular for glycerol metabolism and arsenic detoxification. We have developed a unique system applying the strain of the yeast Pichia pastoris, where the endogenous aquaporins/aquaglyceroporins have been removed and human aquaglyceroporins AQP3, AQP7, and AQP9 are recombinantly expressed enabling comparative permeability measurements between the expressed proteins. Using a newly established Nuclear Magnetic Resonance approach based on measurement of the intracellular life time of water, we propose that human aquaglyceroporins are poor facilitators of water and that the water transport efficiency is similar to that of passive diffusion across native cell membranes. This is distinctly different from glycerol and arsenic trioxide, where high glycerol transport efficiency was recorded.
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| 14. |
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| 15. |
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| 16. |
- Rödström, Karin, et al.
(författare)
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Crystallization and Structure Determination of Superantigens and Immune Receptor Complexes.
- 2016
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Ingår i: Methods in Molecular Biology. - New York, NY : Springer New York. - 1940-6029. ; 1396, s. 51-65
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Tidskriftsartikel (refereegranskat)abstract
- Structure determination of superantigens and the complexes they form with immune receptors have over the years provided insight in their modes of action. This technique requires growing large and highly ordered crystals of the superantigen or receptor-superantigen complex, followed by exposure to X-ray radiation and data collection. Here, we describe methods for crystallizing superantigens and superantigen-receptor complexes using the vapor diffusion technique, how the crystals may be optimized, and lastly data collection and structure determination.
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| 17. |
- Rödström, Karin E J, et al.
(författare)
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Two common structural motifs for TCR recognition by staphylococcal enterotoxins
- 2016
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Ingår i: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 6
-
Tidskriftsartikel (refereegranskat)abstract
- Superantigens are toxins produced by Staphylococcus aureus, called staphylococcal enterotoxins (abbreviated SEA to SEU). They can cross-link the T cell receptor (TCR) and major histocompatibility complex class II, triggering a massive T cell activation and hence disease. Due to high stability and toxicity, superantigens are potential agents of bioterrorism. Hence, antagonists may not only be useful in the treatment of disease but also serve as countermeasures to biological warfare. Of particular interest are inhibitors against SEA and SEB. SEA is the main cause of food poisoning, while SEB is a common toxin manufactured as a biological weapon. Here, we present the crystal structures of SEA in complex with TCR and SEE in complex with the same TCR, complemented with computational alanine-scanning mutagenesis of SEA, SEB, SEC3, SEE, and SEH. We have identified two common areas that contribute to the general TCR binding for these superantigens. This paves the way for design of single antagonists directed towards multiple toxins.
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| 18. |
- Rödström, Karin, 1986, et al.
(författare)
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Structural studies of staphylococcal enterotoxin H in complex with T cell receptor and major histocompatibility complex class II
- 2010
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Ingår i: FEBS JOURNAL. - 1742-464X. ; 2010, 277, s. 53-54
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Superantigens (SAgs) are bacterial toxins capable of cross-linking the immune receptors of the host, the T cell receptor (TCR) and major histocompatibility complex (MHC) class II, and thereby trigger a massive release of cytokines. This could lead to toxic shock syndrome, which can have a fatal outcome. Here, we present the crystal structure of the ternary complex between the superantigen, staphylococcal enterotoxin H (SEH), TCR and MHC, as well as the dimer complex, including only TCR and SEH. It is evident that SEH interacts with the variable α domain (Vα) of TCR, in sharp contrast to previously studied SAgs that interact with the Vβ domain. Due to the high structural conservation of amino acids in SEH that are crucial for the interaction, we propose that in addition to Vβ activation of T cells, there are SAgs, in addition to SEH, which are able to activate T cells through Vα as well. In addition to providing crucial information regarding the nature of TCR-mediated recognition of superantigens, the finding have central implications for future strategies aimed at preventing or modulating the often pathogenic response to superantigens.
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| 19. |
- Rödström, Karin, et al.
(författare)
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Structure of Staphylococcal Enterotoxin E in Complex with TCR Defines the Role of TCR Loop Positioning in Superantigen Recognition.
- 2015
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Ingår i: PLoS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 10:7
-
Tidskriftsartikel (refereegranskat)abstract
- T cells are crucial players in cell-mediated immunity. The specificity of their receptor, the T cell receptor (TCR), is central for the immune system to distinguish foreign from host antigens. Superantigens are bacterial toxins capable of inducing a toxic immune response by cross-linking the TCR and the major histocompatibility complex (MHC) class II and circumventing the antigen specificity. Here, we present the structure of staphylococcal enterotoxin E (SEE) in complex with a human T cell receptor, as well as the unligated T cell receptor structure. There are clear structural changes in the TCR loops upon superantigen binding. In particular, the HV4 loop moves to circumvent steric clashes upon complex formation. In addition, a predicted ternary model of SEE in complex with both TCR and MHC class II displays intermolecular contacts between the TCR α-chain and the MHC, suggesting that the TCR α-chain is of importance for complex formation.
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| 20. |
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| 21. |
- Saline, Maria, et al.
(författare)
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The structure of superantigen complexed with TCR and MHC reveals novel insights into superantigenic T cell activation.
- 2010
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Ingår i: Nature communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 1:8
-
Tidskriftsartikel (refereegranskat)abstract
- Superantigens (SAgs) are bacterial toxins that interact with immunoreceptors, T cell receptor (TCR) and major histocompatibility complex (MHC) class II, conventionally through the variable β-domain of TCR (TCRVβ). They induce a massive release of cytokines, which can lead to diseases such as food poisoning and toxic shock syndrome. In this study, we report the X-ray structure of the ternary complex between staphylococcal enterotoxin H (SEH) and its human receptors, MHC class II and TCR. The structure demonstrates that SEH predominantly interacts with the variable α-domain of TCR (TCRVα), which is supported by nuclear magnetic resonance (NMR) analyses. Furthermore, there is no contact between MHC and TCR upon complex formation. Structural analyses suggest that the major contact points to TCRVα are conserved among other bacterial SAgs. Consequently, a new dimension of SAg biology emerges, suggesting that in addition to the conventional interactions with the TCRVβ domain, SAgs can also activate T cells through the TCRVα domain.
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| 22. |
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| 23. |
- Sjögren, Karin, et al.
(författare)
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Organisational and environmental characteristics of residential aged care units providing highly person-centred care : a cross sectional study
- 2017
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Ingår i: BMC Nursing. - : Springer Science and Business Media LLC. - 1472-6955. ; 16
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Few studies have empirically investigated factors that define residential aged care units that are perceived as being highly person-centred. The purpose of this study was to explore factors characterising residential aged care units perceived as being highly person-centred, with a focus on organisational and environmental variables, as well as residents' and staff' characteristics.METHODS: A cross-sectional design was used. Residents (n = 1460) and staff (n = 1213) data from 151 residential care units were collected, as well as data relating to characteristics of the organisation and environment, and data measuring degree of person-centred care. Participating staff provided self-reported data and conducted proxy ratings on residents. Descriptive and comparative statistics, independent samples t-test, Chi(2) test, Eta Squared and Phi coefficient were used to analyse data.RESULTS: Highly person-centred residential aged care units were characterized by having a shared philosophy of care, a satisfactory leadership, interdisciplinary collaboration and social support from colleagues and leaders, a dementia-friendly physical environment, staff having time to spend with residents, and a smaller unit size. Residential aged care units with higher levels of person-centred care had a higher proportion of staff with continuing education in dementia care, and a higher proportion of staff receiving regular supervision, compared to units with lower levels of person-centred care.CONCLUSIONS: It is important to target organisational and environmental factors, such as a shared philosophy of care, staff use of time, the physical environment, interdisciplinary support, and support from leaders and colleagues, to improve person-centred care in residential care units. Managers and leaders seeking to facilitate person-centred care in daily practice need to consider their own role in supporting, encouraging, and supervising staff.
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| 24. |
- Sjögren, Karin, et al.
(författare)
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Person-centredness and its association with resident well-being in dementia care units
- 2013
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Ingår i: Journal of Advanced Nursing. - : Wiley. - 0309-2402 .- 1365-2648. ; 69:10, s. 2196-2206
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Tidskriftsartikel (refereegranskat)abstract
- Aim: To report a study of the relationship between person-centred care and ability to perform activities of daily living, quality of life, levels of pain, depressive symptoms, and agitated behaviours among residents with dementia in residential care facilities. Background: Standardized measurements of person-centred care have not previously been used to investigate the relationship between person-centred care and well-being for residents with dementia in residential aged care units. Design: This study had a cross-sectional design. Method: Staff and resident surveys were used in a sample of 1261 residents with dementia and 1169 staff from 151 residential care units throughout Sweden. Valid and reliable scales were used to measure person-centredness and ability to perform activities of daily living, quality of life, levels of pain, depressive symptoms, and agitated behaviours in residents. All data were collected in May 2010. Findings: Person-centred care was correlated with residents' ability to perform activities of daily living. Furthermore, residents in units with higher levels of person-centred care were rated as having higher quality of life and better ability to perform activities of daily living compared with residents in units with lower levels of person-centred care. Conclusions: There seems to be a relationship between person-centredness, residents' ability to perform activities of daily living, and residents' quality of life. Further studies are needed to explain the variation of person-centredness between units and the extent and ways this might impact on the quality of life and well-being of frail older residents with cognitive impairments in clinical practice. © 2013 Blackwell Publishing Ltd.
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| 25. |
- Sjögren, Karin, et al.
(författare)
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Psychometric evaluation of the swedish version of the person-centered care assessment tool (P-CAT)
- 2012
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Ingår i: International psychogeriatrics. - : Cambridge University Press. - 1041-6102 .- 1741-203X. ; 24:3, s. 406-415
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Tidskriftsartikel (refereegranskat)abstract
- Background: Person-centered care is a multidimensional concept describing good care, especially within aged care and care for people with dementia. Research studies evaluating person-centered care interventions seldom use direct measurement of levels of person-centeredness. Existing scales that measure person-centeredness need further testing. This study evaluated the psychometric properties of the Swedish version of the Person-Centered Care Assessment Tool (P-CAT). Methods: A cross-sectional sample of 1465 staff from 195 residential care units for older people in Sweden participated in the study. Validity, reliability, and discrimination ability of the scale were evaluated. Results: Confirmatory factor analysis, parallel analysis and exploratory factor analysis supported the construct validity of a two-factor solution. Reliability and homogeneity were satisfactory for the whole P-CAT as demonstrated by a Cronbach's α of 0.75. Test-retest reliability showed temporal stability of the scale, and the discrimination ability of the scale was satisfactory. Conclusion: The Swedish version of the P-CAT was found to be valid, reliable, and applicable for further use. Two subscales are recommended for the Swedish version. © 2011 International Psychogeriatric Association.
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| 26. |
- Sjögren, Karin, et al.
(författare)
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To what extent is the work environment of staff related to person-cented care? A cross-sectional study of residential aged care.
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Background Person-centred care is often described as the model of choice in residential aged care and in the care of persons with dementia. Few empirical studies have reported on the relationship between person-centred care and how staff experience different aspects of their work.Aim To explore the relationship between person-centred care, staff characteristics and perceived work environment in residential aged care units.Method A cross sectional quantitative design was used. Staff in 151 residential aged care units in Sweden (n=1169) completed surveys which included questions about staff characteristics, valid and reliable measures of person-centred care, satisfaction with work and care, job strain, stress of conscience and psychosocial unit climate. Statistical analyses of correlations, group differences, and explanatory regression models were conducted.Results Higher levels of person-centred care was associated with higher levels of staff satisfaction, lower levels of job strain, lower levels of stress of conscience, higher levels of a supportive psychosocial unit climate, and a higher proportion of staff who had received continuing education in dementia care. A supportive psychosocial climate, i.e., where residents and staff experience safety, everydayness and community, explained most of the variation in person-centred care in the regression model.Conclusions This study shows that the work environment and psychosocial climate as perceived by staff, are associated with the extent to which staff perceive the care as being person-centred in residential aged care. These empirical findings support the theoretical postulation that the environment is an important aspect of person-centred care. Thus, promoting a positive and supportive psychosocial environment to enable person-centred care practice seems to be an important implication for managers and leaders in residential aged care.Keywords: Conscience, Cross sectional study, Environment, Job satisfaction, Nursing staff, Patient-centred care, Psychological stress, Residential facilities
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| 27. |
- Sjögren, Karin, et al.
(författare)
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To what extent is the work environment of staff related to person-centred care? : A cross-sectional study of residential aged care
- 2015
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Ingår i: Journal of Clinical Nursing. - : John Wiley & Sons. - 0962-1067 .- 1365-2702. ; 24:9-10, s. 1310-1319
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Tidskriftsartikel (refereegranskat)abstract
- AIMS AND OBJECTIVES: To explore the relationship between staff characteristics, perceived work environment and person-centred care in residential aged care units.BACKGROUND: Person-centred care is often described as the model of choice in residential aged care and in the care of persons with dementia. Few empirical studies have reported on the relationship between how staff experience different aspects of their work and person-centred care.DESIGN: The study had a cross-sectional quantitative design.METHODS: Staff in 151 residential aged care units in Sweden (n = 1169) completed surveys which included questions about staff characteristics, valid and reliable measures of person-centred care, satisfaction with work and care, job strain, stress of conscience and psychosocial unit climate. Statistical analyses of correlations, group differences and multiple linear regression analysis estimated with generalised estimating equation were conducted.RESULTS: Higher levels of staff satisfaction, lower levels of job strain, lower levels of stress of conscience, higher levels of a supportive psychosocial unit climate and a higher proportion of staff with continuing education in dementia care were associated with higher levels of person-centred care. Job strain and a supportive psychosocial climate, explained most of the variation in person-centred care.CONCLUSIONS: This study shows that the work environment as perceived by staff is associated with the extent to which staff perceive the care as being person-centred in residential aged care. These empirical findings support the theoretical postulation that the work environment is an important aspect of person-centred care.RELEVANCE TO CLINICAL PRACTICE: Promoting a positive and supportive psychosocial climate and a work environment where staff experience balance between demands and control in their work, to enable person-centred care practice, seems to be important implications for managers and leaders in residential aged care.
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| 28. |
- Söndergaard Hansen, Jesper, et al.
(författare)
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Glucose transport machinery reconstituted in cell models.
- 2015
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Ingår i: Chemical Communications. - : Royal Society of Chemistry (RSC). - 1364-548X .- 1359-7345. ; 51:12, s. 2316-2319
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Tidskriftsartikel (refereegranskat)abstract
- Here we demonstrate the production of a functioning cell model by formation of giant vesicles reconstituted with the GLUT1 glucose transporter and a glucose oxidase and hydrogen peroxidase linked fluorescent reporter internally. Hence, a simplified artificial cell is formed that is able to take up glucose and process it.
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| 29. |
- Söndergaard Hansen, Jesper, et al.
(författare)
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Perilipin 1 binds to aquaporin 7 in human adipocytes and controls its mobility via protein kinase A mediated phosphorylation
- 2016
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Ingår i: Metabolism-Clinical and Experimental. - : Elsevier BV. - 0026-0495. ; 65:12, s. 1731-1742
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Tidskriftsartikel (refereegranskat)abstract
- Accumulating evidence suggests that dysregulated glycerol metabolism contributes to the pathophysiology of obesity and type 2 diabetes. Glycerol efflux from adipocytes is regulated by the aquaglyceroporin AQP7, which is translocated upon hormone stimulation. Here, we propose a molecular mechanism where the AQP7 mobility in adipocytes is dependent on perilipin 1 and protein kinase A. Biochemical analyses combined with ex vivo studies in human primary adipocytes, demonstrate that perilipin 1 binds to AQP7, and that catecholamine activated protein kinase A phosphorylates the N-terminus of AQP7, thereby reducing complex formation. Together, these findings are indicative of how glycerol release is controlled in adipocytes, and may pave the way for the future design of drugs against human metabolic pathologies.
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| 30. |
- Vassbo, Tove Karin, et al.
(författare)
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Effects of a person-centred and thriving-promoting intervention on nursing home staff job satisfaction : A multi-centre, non-equivalent controlled before-after study
- 2020
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Ingår i: Nursing Open. - : John Wiley & Sons. - 2054-1058. ; 7, s. 1787-1797
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Tidskriftsartikel (refereegranskat)abstract
- Aim: To evaluate the effects of a person‐centred and thriving‐promoting intervention in nursing homes on staff job satisfaction, stress of conscience and the person‐centredness of care and of the environment.Design: A multi‐centre, non‐equivalent control group, before–after trial design.Methods: Staff (N = 341) from six nursing homes in Australia, Norway and Sweden were assigned to the intervention or the control group and both groups were evaluated before the intervention, immediately after and by 6 months follow‐up. Staff completed a questionnaire about job satisfaction (primary endpoint), stress of conscience and the person‐centredness of care and of the environment (secondary endpoints). Linear regression models were used to identify the mean scores and to analyse group differences to test the effects of the intervention.Results: The intervention had no statistically significant effects on staff job satisfaction, level of stress of conscience or the perceived person‐centredness of care and of the environment.
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| 31. |
- Venskutonytė, Raminta, et al.
(författare)
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Expression and purification of rat glucose transporter 1 in Pichia pastoris
- 2018
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Ingår i: Methods in Molecular Biology. - New York, NY : Springer New York. - 1064-3745. ; 1713
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Bokkapitel (refereegranskat)abstract
- Large amounts of pure and homogenous protein are a prerequisite for several biochemical and biophysical analyses, and in particular if aiming at resolving the three-dimensional protein structure. Here we describe the production of the rat glucose transporter 1 (GLUT1), a membrane protein facilitating the transport of glucose in cells. The protein is recombinantly expressed in the yeast Pichia pastoris. It is easily maintained and large-scale protein production in shaker flasks, as commonly performed in academic research laboratories, results in relatively high yields of membrane protein. The purification protocol describes all steps needed to obtain a pure and homogenous GLUT1 protein solution, including cell growth, membrane isolation, and chromatographic purification methods.
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| 32. |
- Ahmadpour, Doryaneh, 1973, et al.
(författare)
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Yeast reveals unexpected roles and regulatory features of aquaporins and aquaglyceroporins
- 2014
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Ingår i: Biochimica et Biophysica Acta. General Subjects. - : Elsevier BV. - 0304-4165 .- 1872-8006 .- 0006-3002. ; 1840:5, s. 1482-1491
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Forskningsöversikt (refereegranskat)abstract
- Background: The yeast Saccharomyces cerevisiae provides unique opportunities to study roles and regulation of aqua/glyceroporins using frontline tools of genetics and genomics as well as molecular cell and systems biology. Scope of review: S. cerevisiae has two similar orthodox aquaporins. Based on phenotypes mediated by gene deletion or overexpression as well as on their expression pattern, the yeast aquaporins play important roles in key aspects of yeast biology: establishment of freeze tolerance, during spore formation as well as determination of cell surface properties for substrate adhesion and colony formation. Exactly how the aquaporins perform those roles and the mechanisms that regulate their function under such conditions remain to be elucidated. S. cerevisiae also has two different aquaglyceroporins. While the role of one of them, Yfl054c, remains to be determined, Fps1 plays critical roles in osmoregulation by controlling the accumulation of the osmolyte glycerol. Fpsl communicates with two osmo-sensing MAPK signalling pathways to perform its functions but the details of Fps1 regulation remain to be determined. Major conclusions: Several phenotypes associated with aqua/glyceroporin function in yeasts have been established. However, how water and glycerol transport contribute to the observed effects is not understood in detail. Also many of the basic principles of regulation of yeast aqua/glyceroporins remain to be elucidated. General significance: Studying the yeast aquaporins and aquaglyceroporins offers rich insight into the life style, evolution and adaptive responses of yeast and rewards us with discoveries of unexpected roles and regulatory mechanisms of members of this ancient protein family. This article is part of a Special Issue entitled Aquaporins. (c) 2013 Elsevier B.V. All rights reserved.
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| 33. |
- Backman, Annica C., 1972-, et al.
(författare)
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Exploring the impact of nursing home managers' leadership on staff job satisfaction, health and intention to leave in nursing homes
- 2023
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Ingår i: Journal of Clinical Nursing. - : John Wiley & Sons. - 0962-1067 .- 1365-2702.
-
Tidskriftsartikel (refereegranskat)abstract
- Aims and ObjectivesTo explore the impact of nursing home leadership and staffing characteristics on staff job satisfaction, health and intention to leave. BackgroundThe number of older people has outpaced growth in the nursing home workforce worldwide. Identifying predictors with the potential to positively impact staff job satisfaction, health and intentions to leave are important. Leadership of the nursing home manager can be one such predictor. DesignCross-sectional design. MethodsA sample of 2985 direct care staff in 190 nursing homes in 43 randomly selected municipalities in Sweden completed surveys on leadership, job satisfaction, self-rated health and intention to leave (response rate 52%). Descriptive statistics and Generalised Estimating Equations were conducted. The STROBE reporting checklist was applied. ResultsNursing home managers' leadership was positively related to job satisfaction, self-rated health and low intention to leave. Lower staff educational levels were related to poorer health and lower job satisfaction. ConclusionsNursing home leadership plays a significant role in the job satisfaction, self-reported health and intention to leave of direct care staff. Low education levels among staff seem to negatively influence staff health and job satisfaction, suggesting that educational initiatives for less-educated staff could be beneficial for improving staff health and job satisfaction. Relevance to clinical practiceManagers seeking to improve staff job satisfaction can consider how they support, coach and provide feedback. Recognising staff achievement at work can contribute to high job satisfaction. One important implication for managers is to offer continuing education to staff with lower or no education, given the large amount of uneducated direct care workers in aged care and the impact this may have on staff job satisfaction and health. No patient or public contributionNo patient or public contribution was required to outcome measures in this study. Direct care staff and managers contributed with data.
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| 34. |
- Backman, Annica C., 1972-, et al.
(författare)
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Longitudinal changes in nursing home leadership, direct care staff job strain and social support in Swedish nursing homes : findings from the U-AGE SWENIS study
- 2023
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Ingår i: International Journal of Older People Nursing. - : John Wiley & Sons. - 1748-3735 .- 1748-3743. ; 18:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: Promoting healthy work environment as a manager in nursing homes is important to safeguard staff health and well-being as well as care quality when facing increasing demands. The impact of leadership on staff work environment needs further exploration.Objectives: To describe longitudinal changes in nursing home leadership, direct care staff characteristics, job strain and social support.Methods: This study has a repeated cross-sectional design, a five-year follow-up study. Nursing home staff in 181 corresponding units (n = 1253 in 2014 and n = 1176 in 2019) completed surveys about leadership, staff job strain and social support in a five-year follow-up study. Descriptive and regression analyses were conducted.Results: A higher degree of leadership defined by coaching and providing direct feedback to care staff, handling conflicts in a constructive way and having control of the clinical work, was significantly associated with a lower degree of job strain and a higher degree of social support among staff, with stronger associations at follow-up. The proportion of enrolled nurses increased significantly at follow-up.Conclusions: Leadership is increasingly important for staff work environment, especially in times of increased workload and decreasing collegiality and deteriorating work atmosphere at work. Implications for Practice: Stakeholder and policy makers in nursing home care may reflect on how managers' leadership is prioritised in these environments because such leadership is associated with staff job strain and social support. Managers striving to improve the work situation of staff may consider their own role and allow flexibility in how and when the work can be performed.
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| 35. |
- Backman, Annica C., 1972-, et al.
(författare)
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The influence of nursing home managers’ leadership on person-centred care and stress of conscience: A cross-sectional study
- 2021
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Ingår i: BMC Nursing. - : BioMed Central. - 1472-6955. ; 20:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: Leadership and stress are common concepts in nursing, and this study explores empirically the connection between leadership and stress of conscience in the context of aged care practice. Previous literature has shown that when staff are unable to carry out their ethical liabilities towards the residents, feelings of guilt may occur among staff, which may be an expression of stress of conscience. Although leadership has been described as crucial for staff’s work perceptions of stress as well as for person-centred practices, the influence of nursing home managers’ leadership on stress of conscience among staff and person-centred practices is still not fully explored. This study attempts to address that knowledge gap by exploring the relationship between leadership, person-centred care, and stress of conscience.Methods: This study was based on a cross-sectional national survey of 2985 staff and their managers in 190 nursing homes throughout Sweden. Descriptive statistics and regression modelling were used to explore associations.Results: Leadership was associated with a higher degree of person-centred care and less stress of conscience. A higher degree of person-centred care was also associated with less stress of conscience. The results also showed that leadership as well as person-centred care were individually associated with lower levels of stress of conscience when adjusting for potential confounders.Conclusion: Nursing home managers’ leadership was significantly associated with less staff stress of conscience and more person-centred care. This indicates that a leadership most prominently characterised by coaching and giving feedback, relying on staff and handling conflicts constructively, experimenting with new ideas, and controlling work individually can contribute to less staff stress as well as higher degree of person-centred care provision.
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| 36. |
- Backman, Annica C., 1972-, et al.
(författare)
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The significance of nursing home managers' leadership : longitudinal changes, characteristics and qualifications for perceived leadership, person-centredness and climate
- 2022
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Ingår i: Journal of Clinical Nursing. - : John Wiley & Sons. - 0962-1067 .- 1365-2702. ; 31:9-10, s. 1377-1388
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Tidskriftsartikel (refereegranskat)abstract
- Aims and objectives: The aim was to explore changes in nursing home managers' leadership, person-centred care and psychosocial climate comparing matched units in a five-year follow-up and to explore the significance of managers' educational qualifications and the ownership of nursing homes for perceived leadership, person-centred care and psychosocial climate in the follow-up data.Background: Leadership has been described as crucial for person-centred care and psychosocial climate even though longitudinal data are lacking. The significance of managerial leadership, its characteristics, managerial qualifications and ownership of nursing homes for perceived leadership, person-centred care and psychosocial climate also needs further exploration.Design: Repeated cross-sectional study.Methods: This study used valid and reliable measures of leadership, person-centred care, psychosocial climate and demographic variables collected from managers and staff n = 3605 in 2014 and n = 2985 in 2019. Descriptive and regression analyses were used. The STROBE checklist was used in reporting this study.Results: Leadership was still positively significantly associated to person-centred care in a five-year follow-up, but no changes in strength were seen. Leadership was still positively significantly associated with psychosocial climate, with stronger associations at follow-up. Six leadership characteristics increased over time. It was also shown that a targeted education for nursing home managers was positively associated with person-centred care.Conclusions: Leadership is still pivotal for person-centred care and psychosocial climate. Knowledge of nursing home managers' leadership, characteristics and educational qualifications of significance for person-centred delivery provides important insights when striving to improve such services.Relevance to clinical practice: The findings can be used for management and clinical practice development initiatives because it was shown that nursing home managers' leadership is vital to person-centred care practices and improves the climate for both staff and residents in these environments.
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| 37. |
- Backman, Annica, et al.
(författare)
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Characteristics of highly rated leadership in nursing homes using item response theory
- 2017
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Ingår i: Journal of Advanced Nursing. - : John Wiley & Sons. - 0309-2402 .- 1365-2648. ; 73:12, s. 2903-2913
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Tidskriftsartikel (refereegranskat)abstract
- Aim: To identify characteristics of highly rated leadership in nursing homes. Background: An ageing population entails fundamental social, economic and organizational challenges for future aged care. Knowledge is limited of both specific leadership behaviours and organizational and managerial characteristics which have an impact on the leadership of contemporary nursing home care. Design: Cross-sectional. Method: From 290 municipalities, 60 were randomly selected and 35 agreed to participate, providing a sample of 3605 direct-care staff employed in 169 Swedish nursing homes. The staff assessed their managers' (n = 191) leadership behaviours using the Leadership Behaviour Questionnaire. Data were collected from November 2013 - September 2014, and the study was completed in November 2016. A two-parameter item response theory approach and regression analyses were used to identify specific characteristics of highly rated leadership. Results: Five specific behaviours of highly rated nursing home leadership were identified; that the manager: experiments with new ideas; controls work closely; relies on subordinates; coaches and gives direct feedback; and handles conflicts constructively. The regression analyses revealed that managers with social work backgrounds and privately run homes were significantly associated with higher leadership ratings. Conclusion: This study highlights the five most important leadership behaviours that characterize those nursing home managers rated highest in terms of leadership. Managers in privately run nursing homes and managers with social work backgrounds were associated with higher leadership ratings. Further work is needed to explore these behaviours and factors predictive of higher leadership ratings.
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| 38. |
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| 39. |
- Backman, Annica, et al.
(författare)
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Towards person-centredness in aged-care : exploring the impact of leadership
- 2016
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Ingår i: Journal of Nursing Management. - : Hindawi Limited. - 0966-0429 .- 1365-2834. ; 24:6, s. 766-774
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Tidskriftsartikel (refereegranskat)abstract
- Aim: To explore the association between leadership behaviours among managers in aged care, and person‐centredness of care and the psychosocial climate.Background: Theory suggests that leadership is important for improving person‐centredness in aged care, however, empirical evidence is lacking.Methods: A cross‐sectional design was used to collect data from Swedish aged care staff (n = 3661). Valid and reliable questionnaires assessing leadership behaviours, person‐centeredness of care and the psychosocial climate were used. Data were analysed using multiple linear regression including interaction terms.Results: Leadership behaviours were significantly related to the person‐centredness of care and the psychosocial climate. The level of person‐centredness of care moderated the impact of leadership on the psychosocial climate.Conclusions and implications for nursing management: The leadership behaviour of managers significantly impacts person‐centred care practice and contributes to the psychosocial climate for both staff and residents in aged care. This study is the first empirically to confirm that middle managers have a central leadership role in developing and supporting person‐centred care practice, thereby creating a positive psychosocial climate and high quality care.
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| 40. |
- Baxter, Rebecca, et al.
(författare)
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The thriving of older people assessment scale : Psychometric evaluation and short‐form development
- 2019
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Ingår i: Journal of Advanced Nursing. - : Wiley. - 0309-2402 .- 1365-2648. ; 75:12, s. 3831-3843
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Tidskriftsartikel (refereegranskat)abstract
- Aim: To evaluate the psychometric properties and performance of the 32‐item Thriving of Older People Assessment Scale (TOPAS) and to explore reduction into a short‐form.Background: The 32‐item TOPAS has been used in studies of place‐related well‐being as a positive measure in long‐term care to assess nursing home resident thriving; however, item redundancy has not previously been explored.Design: Cross‐sectional.Method: Staff members completed the 32‐item TOPAS as proxy‐raters for a random sample of Swedish nursing home residents (N = 4,831) between November 2013 and September 2014. Reliability analysis, exploratory factor analysis and item response theory‐based analysis were undertaken. Items were systematically identified for reduction using statistical and theoretical analysis. Correlation testing, means comparison and model fit evaluation confirmed scale equivalence.Results: Psychometric properties of the 32‐item TOPAS were satisfactory and several items were identified for scale reduction. The proposed short‐form TOPAS exhibited a high level of internal consistency (α=0.90) and strong correlation (r=0.98) to the original scale, while also retaining diversity among items in terms of factor structure and item difficulties.Conclusion: The 32‐item and short‐form TOPAS' indicated sound validity and reliability to measure resident thriving in the nursing home context.Impact: There is a lack of positive life‐world measures for use in nursing homes. The short‐form TOPAS indicated sound validity and reliability to measure resident thriving, providing a feasible measure with enhanced functionality for use in aged care research, assessments and care planning for health promoting purposes in nursing homes.
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| 41. |
- Bruce, Elisabeth, 1973-, et al.
(författare)
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A translation into Swedish and psychometric analysis of the Icelandic instrument “ICE-Family Perceived Support Questionnaire”, and parents’ estimations of support to families from nurses
-
Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Aims and objectives. Testing the psychometric properties, reliability, and validity of a cross-cultural translation into Swedish of the Icelandic instrument “ICE-Family Perceived Support Questionnaire” and, furthermore, reporting estimations of support given by nurses to families in a sample of parents of children with congenital heart defects. Background. Parents of children with congenital heart (CHD) defects often experience greater psychosocial morbidity than parents of children with other medical conditions. In order to design and evaluate interventions with family-centered support, a suitable instrument for measuring family members’ perceived support is required for the Swedish context.Design. A translation and psychometric testing of the instrument ICE-FPSQ.Methods. A sample of 97 parents, including both fathers and mothers, of children with CHD selected in year 2012. A translation of the ICE-FPSQ into Swedish was done, and reliability and validity were tested for the Swedish version.Results. Parents scored low on perceived family support from nurses on the ICE-FPSQ scale. The Swedish version of the ICE-FPSQ was found to be reliable and valid in this context. Reliability was tested by analyzing internal consistency through Cronbach’s α for the entire scale and the two subscales. Test-retest was performed by calculating intra-class correlation, and the results showed satisfactory scale stability over time. The results from the validity test illustrated an acceptable model fit of the Swedish version.Conclusion. This study, by psychometrically testing an instrument for Swedish conditions, has provided an instrument for measuring families’ experience of cognitive and emotional support from nurses to families in Sweden. Additionally, the present study found while testing this instrument that nurses at four pediatric cardiac outpatient clinics only sparingly offered family-centered care to the parents.Relevance to clinical practice. The Swedish version of ICE-FPSQ can be considered useful to measure the effects of family-centered support interventions in the future.
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| 42. |
- Bruce, Elisabeth, et al.
(författare)
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Translation and Testing of the Swedish Version of Iceland-Family Perceived Support Questionnaire With Parents of Children With Congenital Heart Defects
- 2016
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Ingår i: Journal of Family Nursing. - : SAGE Publications. - 1074-8407 .- 1552-549X. ; 22:3, s. 298-320
-
Tidskriftsartikel (refereegranskat)abstract
- There is a need for a suitable instrument for the Swedish context that could measure family members’ perceptions of cognitive and emotional support received from nurses. The purpose of this study was to translate and test the psychometric properties of the Swedish version of the Iceland-Family Perceived Support Questionnaire (ICE-FPSQ) and, further, to report perceptions of support from nurses by family members of children with congenital heart defects (CHDs). A sample of 97 parents of children with CHD, living in Sweden, completed the Swedish translation of ICE-FPSQ. The Swedish version of ICE-FPSQ was found to be reliable and valid in this context. Parents scored perceived family support provided by nurses working in pediatric outpatient clinics as low, which suggests that nurses in these outpatient contexts in Sweden offered family nursing only sparingly.
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| 43. |
- Bölenius, Karin, et al.
(författare)
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A content validated questionnaire for assessment of self reported venous blood sampling practices
- 2012
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Ingår i: BMC Research Notes. - : Springer Science and Business Media LLC. - 1756-0500. ; 5, s. 39-
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Venous blood sampling is a common procedure in health care. It is strictly regulated by national and international guidelines. Deviations from guidelines due to human mistakes can cause patient harm. Validated questionnaires for health care personnel can be used to assess preventable "near misses"--i.e. potential errors and nonconformities during venous blood sampling practices that could transform into adverse events. However, no validated questionnaire that assesses nonconformities in venous blood sampling has previously been presented. The aim was to test a recently developed questionnaire in self reported venous blood sampling practices for validity and reliability.FINDINGS: We developed a questionnaire to assess deviations from best practices during venous blood sampling. The questionnaire contained questions about patient identification, test request management, test tube labeling, test tube handling, information search procedures and frequencies of error reporting. For content validity, the questionnaire was confirmed by experts on questionnaires and venous blood sampling. For reliability, test-retest statistics were used on the questionnaire answered twice. The final venous blood sampling questionnaire included 19 questions out of which 9 had in total 34 underlying items. It was found to have content validity. The test-retest analysis demonstrated that the items were generally stable. In total, 82% of the items fulfilled the reliability acceptance criteria.CONCLUSIONS: The questionnaire could be used for assessment of "near miss" practices that could jeopardize patient safety and gives several benefits instead of assessing rare adverse events only. The higher frequencies of "near miss" practices allows for quantitative analysis of the effect of corrective interventions and to benchmark preanalytical quality not only at the laboratory/hospital level but also at the health care unit/hospital ward.
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| 44. |
- Bölenius, Karin, et al.
(författare)
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Minor improvement of venous blood specimen collection practices in primary health care after a large-scale educational intervention
- 2013
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Ingår i: Clinical Chemistry and Laboratory Medicine. - : Walter de Gruyter GmbH. - 1434-6621 .- 1437-4331. ; 51:2, s. 303-310
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Tidskriftsartikel (refereegranskat)abstract
- Background: Venous blood specimen collection is a common health care practice that has to follow strict guidelines, non-compliance among sampling staff may compromise patient safety. We evaluated a large-scale 2 h educational intervention that emphasised guideline adherence to assess possible improvements of venous blood specimen collection practices.Methods: Blood specimen haemolysis is usually caused by inadequate venous blood specimen collection and handling, reflecting overall pre-analytical handling. We monitored haemolysis of serum samples with haemolysis index corresponding to ≥150 mg/L of free haemoglobin for specimens sent from 11 primary health care centres and analysed on a Vitros 5,1 clinical chemistry analyser before (2008, n=6652 samples) and after (2010, n=6121 samples) the intervention.Results: The total percentage of haemolysed specimens was 11.8% compared to 10.5% (p=0.022) before the intervention. As groups, rural primary health care centres demonstrated a significant reduction [Odds ratios (OR)=0.744] of haemolysed specimens after intervention, whereas urban primary health care centres demonstrated a significant increase (OR=1.451) of haemolysis.Conclusions: A large-scale 2 h educational intervention to make venous blood specimen collection staff comply with guideline practices had minor effects on collection practices. Educational interventions may be effective in wards/care centres demonstrating venous blood specimen collection practices with larger deviations from guidelines.
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| 45. |
- Bölenius, Karin, et al.
(författare)
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Perceptions of self-determination and quality of life among Swedish home care recipients - across-sectional study
- 2019
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Ingår i: BMC Geriatrics. - : BioMed Central. - 1471-2318. ; 19
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Tidskriftsartikel (refereegranskat)abstract
- Background: It is acknowledged that preservation of self-determination is very important in order for older adults to experience good quality of life, but to what degree and in what areas people receiving help from home care service experience self-determination is unknown. Few studies have examined the perception of self-determination in relation to quality of life among older adults living at home with help from home care services. Thus, the aim of this study was to explore perceptions of self-determination among older adults living at home with the support of home care services, and to test whether older adults who perceive a higher degree of self-determination also feel they have a better quality of life.Methods: This cross-sectional study was conducted in one municipality in northern Sweden. A total of 134 older adults (≥ 65 years) were included. Data were collected by means of a survey including questionnaires about background characteristics, self-determination, and health-related quality of life. Descriptive statistics regarding background characteristics for groups with high and low self-determination respectively were presented and the differences between the groups were analyzed using the Chi-square test and the Mann-Whitney U test.Results: Our main finding shows that the majority of older adults with support from home care services experience self-determination in the dimensions use of time, and self-care. However, a wide variation was found in self-reported self-determination in all dimensions. Results also show that the group with higher self-reported self-determination also reported a greater degree of experienced quality of life in comparison with the group with lower self-reported self-determination.Conclusions: In line with earlier research, our results found a positive relation between self-determination and quality of life. The results are relevant for the care of older adults and indicate a need of further research. The results presented in this paper could serve as a guide when planning for improved self-determination among older adults in home care service.
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| 46. |
- Corneliusson, Laura, et al.
(författare)
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Well‐being and Thriving in Sheltered Housing versus Ageing in Place : Results from the U‐Age Sheltered Housing Study
- 2020
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Ingår i: Journal of Advanced Nursing. - : John Wiley & Sons. - 0309-2402 .- 1365-2648. ; 73:3, s. 856-866
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Tidskriftsartikel (refereegranskat)abstract
- Aims: To explore to what extent type of residence (sheltered housing or ageing in place) contributes to thriving and well-being in older adults, when controlling for age, sex, living alone, being a widow and adjusting for functional status, self-rated health, and depressive mood.Design: A matched cohort study.Methods A self-report survey was sent out to a total population of residents in all sheltered housings in Sweden and a matched control group ageing in place (N = 3,805). The data collection took place between October 2016-January 2017.Results: The interaction analyses related to thriving showed that with increasing level of depressive mood and decreasing levels of self-rated health and functional status, those residing in sheltered housing generally reported higher levels of thriving, as compared with those ageing in place. Well-being was not found to be significantly associated with type of accommodation.Conclusion: There may be features in sheltered housing that are associated with resident thriving especially among individuals with impairments of function, health or mood, although further studies are required to identify these specific features.Impact: This study informs staff and policymakers about thriving and well-being in sheltered housing accommodations. These findings may be used to further the development of sheltered housing accommodations.
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| 47. |
- de Maré, Sofia W., et al.
(författare)
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Structural Basis for Glycerol Efflux and Selectivity of Human Aquaporin 7
- 2020
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Ingår i: Structure. - : Elsevier BV. - 0969-2126. ; 28:2, s. 3-222
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Tidskriftsartikel (refereegranskat)abstract
- AQP7 is an important glycerol channel in human adipocytes, and its dysfunction is linked to metabolic disorders. The high-resolution X-ray structures of AQP7 unravels the molecular details of how glycerol travels through the channel and provide a structural basis for development of small-molecule drugs for targeting AQP7.
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| 48. |
- Edvardsson, David, et al.
(författare)
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Everyday activities for people with dementia in residential aged care : associations with person-centredness and quality of life.
- 2014
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Ingår i: International journal of older people nursing. - : Blackwell Publishing. - 1748-3743 .- 1748-3735. ; 9, s. 269-276
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Providing everyday activities is central to high quality residential aged care, but further research is needed on the association between activity participation, person-centred care and quality of life. AIMS AND OBJECTIVES: To explore the point-prevalence of participation in everyday activities for residents with dementia within a national sample of Swedish residential aged care units and to explore if residents participating in everyday activities lived in more person-centred units and/or had higher quality of life as compared to residents not participating in everyday activities. DESIGN AND METHODS: A cross-sectional design was used to collect valid and reliable questionnaire data on activity participation, unit person-centredness and quality of life in a sample of residents in residential aged care (n = 1266). RESULTS: Only 18% of residents participated in everyday activities such as making coffee, setting or clearing the table, cleaning or watering plants, 62% participated in outdoor walks, 27% participated in parlour games, and 14% and 13% participated in excursions and church visits, respectively. Those residents who had participated in everyday activities lived in more person-centred units, had significantly higher quality of life and higher cognitive scores as compared to those residents who had not participated in everyday activities. CONCLUSIONS: Even though the prevalence of resident participation in everyday activities was low, resident participation was significantly associated with unit person-centredness and resident quality of life. It seems that everyday activities that are routine and commonplace to residential aged care can be potent nursing interventions for promoting resident quality of life. IMPLICATIONS FOR PRACTICE: The study indicates that residents can benefit from participation in everyday activities that are commonly occurring in aged care practice. It seems that such everyday tasks and procedures can provide fruitful ways to make person-centred care happen in clinical practice, and ways to increasingly involve residents with cognitive impairment need to be further developed.
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| 49. |
- Edvardsson, David, et al.
(författare)
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Person-centred climate questionnaire (PCQ-S) : establishing reliability and cut-off scores in residential aged care
- 2015
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Ingår i: Journal of Nursing Management. - : John Wiley & Sons. - 0966-0429 .- 1365-2834. ; 23:3, s. 315-323
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Tidskriftsartikel (refereegranskat)abstract
- AimThis study aimed to establish reliability and cut-off scores for the person-centred climate questionnaire - staff version (PCQ-S) in residential aged care. BackgroundA number of tools have emerged recently to measure person-centredness, and these need psychometric evaluation and cut-off scores to enhance utilisation and interpretation. MethodA cross-sectional survey design was employed in a Swedish sample of residential aged care staff (n=1237). Psychometric evaluation using Cronbach's alpha and item-total correlation was used, together with establishing cut-off scores based on quartile scores. ResultThe PCQ-S had satisfactory psychometric properties and the following total scale cut-off scores for unit person-centredness were suggested: 49 (well below average'), 50-56 (below average'), 57-62 (above average') and 63 (well above average'). These cut-off scores were clinically meaningful as they separated the sample into four groups in which staff in more person-centred units reported significantly higher work satisfaction, social support and less stress of conscience. ConclusionThe PCQ-S has reliability in residential aged care samples, and cut-off scores are provided that provide important fundaments for comparative studies and aggregation of data to explore person-centredness care further. Implications for nursing managementThe study enables managers with ways to measure, interpret and compare levels of person-centredness between units and facilities for research, practice development and/or benchmarking purposes.
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| 50. |
- Eltschkner, Sandra, et al.
(författare)
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The structure of songbird MHC class I reveals antigen binding that is flexible at the N-terminus and static at the C-terminus
- 2023
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Ingår i: Frontiers in Immunology. - 1664-3224. ; 14
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Tidskriftsartikel (refereegranskat)abstract
- Long-distance migratory animals such as birds and bats have evolved to withstand selection imposed by pathogens across the globe, and pathogen richness is known to be particularly high in tropical regions. Immune genes, so-called Major Histocompatibility Complex (MHC) genes, are highly duplicated in songbirds compared to other vertebrates, and this high MHC diversity has been hypothesised to result in a unique adaptive immunity. To understand the rationale behind the evolution of the high MHC genetic diversity in songbirds, we determined the structural properties of an MHC class I protein, Acar3, from a long-distance migratory songbird, the great reed warbler Acrocephalus arundinaceus (in short: Acar). The structure of Acar3 was studied in complex with pathogen-derived antigens and shows an overall antigen presentation similar to human MHC class I. However, the peptides bound to Acar3 display an unusual conformation: Whereas the N-terminal ends of the peptides display enhanced flexibility, the conformation of their C-terminal halves is rather static. This uncommon peptide-binding mode in Acar3 is facilitated by a central Arg residue within the peptide-binding groove that fixes the backbone of the peptide at its central position, and potentially permits successful interactions between MHC class I and innate immune receptors. Our study highlights the importance of investigating the immune system of wild animals, such as birds and bats, to uncover unique immune mechanisms which may neither exist in humans nor in model organisms.
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