| 1. |
- Klionsky, Daniel J., et al.
(författare)
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Guidelines for the use and interpretation of assays for monitoring autophagy
- 2012
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Ingår i: Autophagy. - : Informa UK Limited. - 1554-8635 .- 1554-8627. ; 8:4, s. 445-544
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Forskningsöversikt (refereegranskat)abstract
- In 2008 we published the first set of guidelines for standardizing research in autophagy. Since then, research on this topic has continued to accelerate, and many new scientists have entered the field. Our knowledge base and relevant new technologies have also been expanding. Accordingly, it is important to update these guidelines for monitoring autophagy in different organisms. Various reviews have described the range of assays that have been used for this purpose. Nevertheless, there continues to be confusion regarding acceptable methods to measure autophagy, especially in multicellular eukaryotes. A key point that needs to be emphasized is that there is a difference between measurements that monitor the numbers or volume of autophagic elements (e.g., autophagosomes or autolysosomes) at any stage of the autophagic process vs. those that measure flux through the autophagy pathway (i.e., the complete process); thus, a block in macroautophagy that results in autophagosome accumulation needs to be differentiated from stimuli that result in increased autophagic activity, defined as increased autophagy induction coupled with increased delivery to, and degradation within, lysosomes (in most higher eukaryotes and some protists such as Dictyostelium) or the vacuole (in plants and fungi). In other words, it is especially important that investigators new to the field understand that the appearance of more autophagosomes does not necessarily equate with more autophagy. In fact, in many cases, autophagosomes accumulate because of a block in trafficking to lysosomes without a concomitant change in autophagosome biogenesis, whereas an increase in autolysosomes may reflect a reduction in degradative activity. Here, we present a set of guidelines for the selection and interpretation of methods for use by investigators who aim to examine macroautophagy and related processes, as well as for reviewers who need to provide realistic and reasonable critiques of papers that are focused on these processes. These guidelines are not meant to be a formulaic set of rules, because the appropriate assays depend in part on the question being asked and the system being used. In addition, we emphasize that no individual assay is guaranteed to be the most appropriate one in every situation, and we strongly recommend the use of multiple assays to monitor autophagy. In these guidelines, we consider these various methods of assessing autophagy and what information can, or cannot, be obtained from them. Finally, by discussing the merits and limits of particular autophagy assays, we hope to encourage technical innovation in the field.
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| 2. |
- de Jong, Kim, et al.
(författare)
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Area-aggregated assessments of perceived environmental attributes may overcome single-source bias in studies of green environments and health: results from a cross-sectional survey in southern Sweden
- 2011
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Ingår i: Environmental Health. - 1476-069X. ; 10
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Tidskriftsartikel (refereegranskat)abstract
- Background: Most studies assessing health effects of neighborhood characteristics either use self-reports or objective assessments of the environment, the latter often based on Geographical Information Systems (GIS). While objective measures require detailed landscape data, self-assessments may yield confounded results. In this study we demonstrate how self-assessments of green neighborhood environments aggregated to narrow area units may serve as an appealing compromise between objective measures and individual self-assessments. Methods: The study uses cross-sectional data (N = 24,847) from a public health survey conducted in the county of Scania, southern Sweden, in 2008 and validates the Scania Green Score (SGS), a new index comprising five self-reported green neighborhood qualities (Culture, Lush, Serene, Spacious and Wild). The same qualities were also assessed objectively using landscape data and GIS. A multilevel (ecometric) model was used to aggregate individual self-reports to assessments of perceived green environmental attributes for areas of 1,000 square meters. We assessed convergent and concurrent validity for self-assessments of the five items separately and for the sum score, individually and area-aggregated. Results: Correlations between the index scores based on self-assessments and the corresponding objective assessments were clearly present, indicating convergent validity, but the agreement was low. The correlation was even more evident for the area-aggregated SGS. All three scores (individual SGS, area-aggregated SGS and GIS index score) were associated with neighborhood satisfaction, indicating concurrent validity. However, while individual SGS was associated with vitality, this association was not present for aggregated SGS and the GIS-index score, suggesting confounding (single-source bias) when individual SGS was used. Conclusions: Perceived and objectively assessed qualities of the green neighborhood environment correlate but do not agree. An index score based on self-reports but aggregated to narrow area units can be a valid approach to assess perceived green neighborhood qualities in settings where objective assessments are not possible or feasible.
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| 3. |
- de Jong, Kim, et al.
(författare)
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Perceived green qualities were associated with neighborhood satisfaction, physical activity, and general health: Results from a cross-sectional study in suburban and rural Scania, southern Sweden.
- 2012
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Ingår i: Health and Place. - : Elsevier BV. - 1873-2054 .- 1353-8292. ; 18:6, s. 1374-1380
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Tidskriftsartikel (refereegranskat)abstract
- In this study using cross-sectional survey data from suburban and rural Scania, Sweden (N=24,847), we assessed how the recently validated index score of area-aggregated perceived green neighborhood qualities (Scania Green Score; SGS), and the five distinct qualities within this index were associated with three self-reported indicators of well-being: neighborhood satisfaction, physical activity and general health. Effect sizes were compared with objective (GIS-based) assessments of the same five qualities. Area-aggregated SGS was positively associated with neighborhood satisfaction, physical activity and general health. The association with general health was mediated by physical activity and neighborhood satisfaction. Three perceived qualities had salutogenic potential: historical remains (culture), silence such that sounds of nature can be heard (serene) and species richness (lush). Spacious and wild were not appreciated. Some independent positive effects of the GIS-based index were noted, but could not be consistently attributed to specific qualities. Perceived qualities within green areas, not merely quantity, are related to aspects of well-being in suburban and rural areas.
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| 4. |
- Hovbrandt, Pia, et al.
(författare)
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Prerequisites and driving forces behind an extended working life among older workers
- 2019
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Ingår i: Scandinavian Journal of Occupational Therapy. - : Informa UK Limited. - 1103-8128 .- 1651-2014. ; 26:3, s. 171-183
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Tidskriftsartikel (refereegranskat)abstract
- Background: Reforms are changing pension systems in many European countries, in order to both restrict early retirement and force people to extend their working life. From occupational therapy and occupational science perspectives, studies focusing on aspects of working life that motivate the older worker is urgent. Aim: The aim was to describe incentives behind an extended working life among people over age 65. Method: Focus group methodology was used, with participants ages 66–71, from varying work fields: construction and technical companies and the municipal elderly care sector. Findings: Work was considered important and valuable to the degree of how challenging work was, the possibilities for inclusion in a team of colleagues and the chances for better personal finances. Amongst all, the participants expressed a feeling of a strengthened identity by being challenged and having the opportunity to manage working tasks. Conclusion: The finding showed the actual reasons behind an extended working life among older workers. However, a risk of rising social inequity may appear with increased working life if older people are forced to extend their working life due to a difficult financial situation as a pensioner. A variety of retirement options and initiatives in order to support older workers are justified.
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| 5. |
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| 6. |
- Kadefors, Roland, 1939, et al.
(författare)
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Occupation, gender and work-life exits: a Swedish population study
- 2018
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Ingår i: Ageing & Society. - 0144-686X .- 1469-1779. ; 38:7, s. 1332-1349
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Tidskriftsartikel (refereegranskat)abstract
- The present study was undertaken in order to examine the differences between occupations in the Swedish labour market with respect to the risk for men and women of leaving working life prematurely. The project was carried out as a population study employing methodology used in demographics to predict life length at birth. Here, calculations of expected remaining work-life length were based on the exits from working life. The study was based on the Swedish national labour statistics, covering all employees who had an occupational definition in 2006 and who were in the age range 35–64 years during the study period 2007–2010. There was a clear socio-economic divide in exit patterns, comparing blue- and white-collar jobs. The differences between the highest and the lowest risk jobs exceeded 4.5 years among both men and women. In the blue-collar occupational groups there were 50 per cent or less ‘survivors’ still working at age 65; in many white-collar occupations there were more than 60 per cent. Men and women exited working life at the same age. Compared to a similar study carried out in 2006, the same socio-economic pattern prevails, but people now work longer in almost all occupations. Women exited working life 0.8 years earlier than men in 2006; this difference is now gone.
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| 7. |
- Kadefors, Roland, 1939, et al.
(författare)
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Work life length in different occupations
- 2014
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Ingår i: Proc. 7th Nordic Work Life Conference 2014: Threats and Possibilities. - 9789198119558
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Konferensbidrag (refereegranskat)
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| 8. |
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| 9. |
- Nordström, Albin, et al.
(författare)
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Microbial controls on net production of nitrous oxide in a denitrifying woodchip bioreactor
- 2021
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Ingår i: Journal of Environmental Quality. - : Wiley. - 0047-2425 .- 1537-2537. ; 50:1, s. 228-240
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Tidskriftsartikel (refereegranskat)abstract
- Denitrifying woodchip bioreactors (DWBs) are potential low‐cost technologies for the removal of nitrate (NO3−) in water through denitrification. However, if environmental conditions do not support microbial communities performing complete denitrification, other N transformation processes will occur resulting in the export of nitrite (NO2−), nitrous oxide (N2O), or ammonium (NH4+). In order to identify the factors controlling the relative accumulation of NO2−, N2O, and/or NH4+ in DWBs, porewater samples were collected over two operational years from a DWB designed for removing NO3− from mine water. Woodchip samples were collected at the end of the operational period. Changes in the abundances of functional genes involved in denitrification, N2O reduction, and dissimilatory nitrate reduction to ammonium were correlated with pore water chemistry and temperature. Temporal changes in the abundance of the denitrification gene nirS were significantly correlated with increases in porewater N2O concentrations, and indicated the preferential selection of incomplete denitrifying pathways ending with N2O. Temperature and the TOC/NO3− ratio were strongly correlated with NH4+ concentrations and inversely correlated with the ratio between denitrification genes and the genes indicative of ammonification (∑nir/nrfA), suggesting an environmental control on NO3− transformations. Overall, our results for a DWB operated at hydraulic residence times of 1.0 ‐ 2.6 days demonstrate the temporal development in the microbial community and indicate an increased potential for N2O emissions with time from the DWB.
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| 10. |
- Weimann, Hanna, et al.
(författare)
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Effects of changing exposure to neighbourhood greenness on general and mental health: A longitudinal study.
- 2015
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Ingår i: Health and Place. - : Elsevier BV. - 1873-2054 .- 1353-8292. ; 33, s. 48-56
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Tidskriftsartikel (refereegranskat)abstract
- Green neighbourhood environments have been associated with physical and psychological wellbeing in adults. Access to greenness is potentially more important in vulnerable subgroups. In this study based on longitudinal survey data from southern Sweden the cohort was divided into prognostic groups for good self-reported general (n=8891) and mental (n=9444) health. We used independent survey data to assess perceived neighbourhood greenness in 1km(2) areas, and estimated effects of changing exposure longitudinally stratified by prognostic group. The overall effect on health was small and statistically uncertain (for general health OR 1.04, 95% CI 0.98-1.10, for mental health OR 1.07, 95% CI 1.00-1.14). A more beneficial effect of increased greenness was indicated among subjects with lowest prognostic of good general health (OR 1.24, 95% CI 1.01-1.52). The study provided only weak evidence for beneficial effects of increased neighbourhood greenness triggered by changing residence. It seems that altered life circumstances, e.g. changed civil or socioeconomic status that often trigger a decision to move, are also the key determinants of the health consequences of changing residence.
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