| 1. |
- Agardh, Carl-David, et al.
(författare)
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Expression of antioxidant enzymes in rat retinal ischemia followed by reperfusion.
- 2006
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Ingår i: Metabolism, Clinical and Experimental. - : Elsevier BV. - 1532-8600. ; 55:7, s. 892-898
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Tidskriftsartikel (refereegranskat)abstract
- To evaluate the expression and protein levels of antioxidant enzymes in the rat retina exposed to oxidative stress induced by ischemia-reperfusion injury. Retinal ischemia was induced in female Wistar rats by ligation of the optic nerve and vessels behind the left eye bulb, and was followed by reperfusion for 0, 3, 6, or 24 hours. The right eye served as control. RNA and protein were extracted simultaneously from each retina. Expressions of the endogenous antioxidant enzymes glutathione peroxidase (GPx1), catalase (CAT), copper/zinc superoxide dismutase, manganese superoxide dismutase, and the catalytic subunit of glutamylcysteine ligase (GCLc) were analyzed with real-time reverse transcription polymerase chain reaction and related to the endogenous control cyclophilin B. Protein levels were measured with Western blot analysis. During the early phase (0 or 3 hours) of reperfusion, no changes were seen in enzyme expression. After 6 hours, GCLc expression increased by a factor of 1.14 (P =.034), followed by a decline of 0.80 after 24 hours (P =.00004), according to the comparative Ct method. After 24 hours of reperfusion, GPx1 expression increased by a factor of 1.14 (P =.028), and CAT had decreased by 0.82 (P =.022). Expressions of copper/zinc superoxide dismutase and manganese superoxide dismutase showed a tendency toward a decrease by factors of 0.86 (P =.055) and 0.88 (P =.053), respectively, after 24 hours. Protein levels did not differ for any of the antioxidants, regardless of reperfusion time. The slightly increased messenger RNA expression of GPx1 after 24 hours of reperfusion with a concomitant very modest decrease in CAT and GCLc expression and no change in protein levels indicate a very modest, if any, response to oxidative stress generated by ischemia followed by reperfusion in rat retina.
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| 2. |
- Agardh, Elisabet, et al.
(författare)
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Modifying a standard method allows simultaneous extraction of RNA and protein, enabling detection of enzymes in the rat retina with low expressions and protein levels
- 2006
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Ingår i: Metabolism, Clinical and Experimental. - : Elsevier BV. - 1532-8600. ; 55:2, s. 168-174
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Tidskriftsartikel (refereegranskat)abstract
- The aim of the study was to evaluate messenger RNA and protein expression in limited amounts of tissue with low protein content. The Chomczynski method was used for simultaneous extraction of RNA, and protein was modified in the protein isolation step. Template mass and cycling time for the complementary DNA synthesis step of real-time reverse transcription-polymerase chain reaction (RT-PCR) for analysis of catalase, copper/zinc superoxide dismutase, manganese superoxide dismutase, the catalytic subunit of glutamylcysteine ligase, glutathione peroxidase 1, and the endogenous control cyclophilin B (CypB) were optimized before PCR. Polymerase chain reaction accuracy and efficacy were demonstrated by calculating the regression (R2) values of the separate amplification curves. Appropriate antibodies, blocking buffers, and running conditions were established for Western blot, and protein detection and multiplex assays with CypB were performed for each target. During the extraction procedure, the protein phase was dissolved in a modified washing buffer containing 0.1% sodium dodecyl sulfate, followed by ultrafiltration. Enzyme expression on real-time RT-PCR was accomplished with high reliability and reproducibility (R2, 0.990-0.999), and all enzymes except for glutathione peroxidase 1 were detectable in individual retinas on Western blot. Western blot multiplexing with CypB was possible for all targets. In conclusion, connecting gene expression directly to protein levels in the individual rat retina was possible by simultaneous extraction of RNA and protein. Real-time RT-PCR and Western blot allowed accurate detection of retinal protein expressions and levels.
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| 3. |
- Alrutz, Marie, et al.
(författare)
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Projektledning
- 2013
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Bok (populärvet., debatt m.m.)abstract
- Projektledning är ett yrke med egen certifiering. Det pågår en spännande utveckling inom området och det blir allt viktigare att hålla sig ajour med utvecklingen.Det övergripande målet med den här handboken är att vara en ständigt aktuell heltäckande bok om projektarbete. Innehållsmässigt täcker den både frågor som har med struktur och styrning att göra och frågor om ledning av människor och mänskliga processer i grupp. Kompetens inom projekt byggs av både kunskap och erfarenhet. Vi följer kontinuerligt aktuell forskning inom dessa områden och bjuder in intressanta forskare att medverka som författare. Vi skildrar verkliga projekt och låter erfarenheterna få plats, både de bästa erfarenheterna och de utmaningar som man tagit sig igenom.Handboken är levande och det innebär att artiklar tas bort för att ge plats för nya, i takt med att den uppdateras fortlöpande.
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| 4. |
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| 5. |
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| 6. |
- Fagerlind, Anna-Carin, et al.
(författare)
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Experience of work-related flow : Does high decision latitude enhance benefits gained from job resources?
- 2013
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Ingår i: Journal of Vocational Behavior. - : Elsevier. - 0001-8791 .- 1095-9084. ; 83:2, s. 161-170
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Tidskriftsartikel (refereegranskat)abstract
- Flow is an experience of enjoyment, intrinsic motivation and absorption, which may occur in situations involving high challenges and high skill utilization. This study investigated the likelihood of experiencing work-related flow in relation to the job strain categories of the demand–control model, and to job resources such as social capital and an innovative learning climate. A questionnaire was sent out to employees in nine Swedish organizations (n = 3667, 57% response rate). Binary logistic regression analysis was performed. The results show that active jobs, low-strain jobs, a high degree of social capital and innovative learning climate increased the likelihood of experiencing work-related flow. In jobs with high decision latitude, regardless of demands, there was an increased likelihood to benefit from social capital and an innovative learning climate. The results emphasize the importance of autonomy and skill utilization, to enable the use of additional job resources in order to promote work-related flow and well-being at work.
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| 7. |
- Fagerlind Ståhl, Anna-Carin, et al.
(författare)
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Associations between organisation of work, work conditions, work-relatedf low and performance: a multilevel analysis
- 2015
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- The aim of this study is to investigate how organisation of work in terms of sociotechnical characteristics and use of tools inspired by lean production, and psychosocial conditions at the workplace, are associated with work-related flow and performance.A questionnaire including questions concerning work organisation, psychosocial work conditions, work-related flow and self-rated performance was sent to employees in ten Swedish organisations; 4442 people (56%) responded. Multilevel logistic regression analyses were used in order to investigate organisation of work and work conditions in relation to work-related flow and performance. In addition, the association between work-related flow and performance was investigated.Our results show that a high degree of lean tool use in combination with a low degree of sociotechnical characteristics was negatively associated with work-related flow but positively associated with performance. When decision latitude, social capital, and innovative learning climate were included in the model, the association was no longer significant in relation to work-related flow, but remained and was strengthen in relation to performance. Work-related flow had a positive association with performance.The conclusion is that work-related flow and work conditions that enable individual and collective skill use are important for increased performance. When lean tools are used to a high degree, good decision latitude, social capital and innovative learning climate buffer negative effects on health, and increase performance.
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| 8. |
- Fagerlind Ståhl, Anna-Carin, et al.
(författare)
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Lean production tools and decision latitude enable conditions for innovative learning in organizations : a multilevel analysis
- 2015
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Ingår i: Applied Ergonomics. - : Elsevier. - 0003-6870 .- 1872-9126. ; 47, s. 285-291
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Tidskriftsartikel (refereegranskat)abstract
- The effect of lean production on conditions for learning is debated. This study aimed to investigate how tools inspired by lean production (standardization, resource reduction, visual monitoring, housekeeping, value flow analysis) were associated with an innovative learning climate and with collective dispersion of ideas in organizations, and whether decision latitude contributed to these associations. A questionnaire was sent out to employees in public, private, production and service organizations (n = 4442). Multilevel linear regression analyses were used. Use of lean tools and decision latitude were positively associated with an innovative learning climate and collective dispersion of ideas. A low degree of decision latitude was a modifier in the association to collective dispersion of ideas. Lean tools can enable shared understanding and collective spreading of ideas, needed for the development of work processes, especially when decision latitude is low. Value flow analysis played a pivotal role in the associations.
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| 9. |
- Fagerlind Ståhl, Anna-Carin, 1982-
(författare)
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Live long and prosper : Health-promoting conditions at work
- 2015
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The aim of this thesis is to contribute with knowledge concerning health-promoting conditions at work, and to investigate how individual, workplace and organisational conditions are interrelated. In the thesis, work-related flow, i.e. an experience of motivation, absorption and work enjoyment, is used as a holistic notion of occupational health. In Paper I, work-related flow is investigated in relation to decision latitude, social capital and an innovative learning climate at work. Paper II investigates whether the use of tools inspired by lean production, such as standardisation and value stream mapping, is positively associated with conditions for innovative learning in organisations. The aim of Paper III is to identify conditions for health and performance in organisation and at work; further, to investigate the association between work-related flow and performance. Paper IV reports on a longitudinal investigation of workrelated flow in relation to lean tool use and conditions at the workplace. The empirical material is based on data from 10 organisations, including 4442 employees. Papers I-III are cross-sectional, whereas Paper IV is longitudinal. Papers II-IV utilise multilevel analyses.The results show that decision latitude, social capital and an innovative learning climate are associated with an increase in work-related flow (Papers I, III & IV), and with performance (Paper III). Individuals’ decision latitude enables an increased benefit from the social capital and innovative learning climate at work (Paper I). The effect of tools inspired by lean production on work-related flow (Papers III & IV), and on conditions for innovative learning (Paper II) differs, depending on which tools are used, and on workplace conditions. These tools enable innovative learning mainly where decision latitude is low (Paper II), and it is primarily the lean tool value stream mapping which has the potential to create an arena for innovative learning (Paper II) and work-related flow (Paper IV).It is concluded that the individual is embedded in a social work context that has the potential to strengthen the ability to act with motivation, absorption and enjoyment. In order to utilise collective healthpromoting conditions at work, individuals need to have authority to make their own decisions and use their skills. The effect of tools inspired by lean production depends on the specific tools that are used, and on individuals’ decision latitude at work. Their potential to enable innovative learning is most evident for employees who have few opportunities for autonomous decision-making and skill use in their work. For those with a high degree of decision latitude, the use of lean tools has a smaller effect. Work-related flow may in itself serve as a resource that improves performance and increases engagement in health-promoting work conditions. In order to promote health as well as performance, work needsto be organised so that employees have opportunities to decide over their own work, and utilise their skills, individually and collectively within the workgroup.
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| 10. |
- Fagerlind Ståhl, Anna-Carin, et al.
(författare)
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The effect of lean tool use and work conditions on employee health : a longitudinal multilevel study
- 2015
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Objectives: Although lean production is an increasingly common approach to increase the efficiency of organisations, its effect on employee health is not clear. This longitudinal study investigates the effect of lean tool use and work conditions on work-related flow. Flow is a measure of health that reflects the experience of intrinsic motivation, absorption and work enjoyment.Methods: A questionnaire was sent to employees in seven organisations on two occasions with an interval of two years (n =1722). Multilevel linear regression analyses were used in order to investigate the association between the use of lean tools (i.e. standardisation, value stream mapping, visual monitoring, housekeeping and resource reduction), decision latitude, social capital, and innovative learning climate at baseline, and work-related flow at follow-up.Results: In multivariate analyses, adjusted for flow at baseline, use of lean tools was positively associated with work-related flow at follow-up. When the tools were investigated separately, only value stream mapping remained significant after adjustment for work conditions and flow at baseline. Social capital and decision latitude were positively associated with flow at follow-up. Flow at baseline and follow-up were strongly associated.Conclusions: The extent to which lean tool use has an effect on employee health depends on which tools are used. Work conditions that support learning, such as decision latitude and social capital, are associated with a longitudinal increase in the experience of work-related flow, and are important for gaining health-promoting benefits from the use of lean tools.
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