| 1. |
- Qin, Ning, et al.
(författare)
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Increased CO 2 fixation enables high carbon-yield production of 3-hydroxypropionic acid in yeast
- 2024
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Ingår i: Nature Communications. - 2041-1723 .- 2041-1723. ; 15:1
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Tidskriftsartikel (refereegranskat)abstract
- CO2 fixation plays a key role to make biobased production cost competitive. Here, we use 3-hydroxypropionic acid (3-HP) to showcase how CO2 fixation enables approaching theoretical-yield production. Using genome-scale metabolic models to calculate the production envelope, we demonstrate that the provision of bicarbonate, formed from CO2, restricts previous attempts for high yield production of 3-HP. We thus develop multiple strategies for bicarbonate uptake, including the identification of Sul1 as a potential bicarbonate transporter, domain swapping of malonyl-CoA reductase, identification of Esbp6 as a potential 3-HP exporter, and deletion of Uga1 to prevent 3-HP degradation. The combined rational engineering increases 3-HP production from 0.14 g/L to 11.25 g/L in shake flask using 20 g/L glucose, approaching the maximum theoretical yield with concurrent biomass formation. The engineered yeast forms the basis for commercialization of bio-acrylic acid, while our CO2 fixation strategies pave the way for CO2 being used as the sole carbon source.
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| 2. |
- Wijkander, Maria, et al.
(författare)
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A Prospective Twin Study Investigating the Role of Genetics, Early Environment and Neuroticism in the Association Between Exposure to Work-Related Offensive Behaviours and Sickness Absence due to Common Mental Disorders
- 2024
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Ingår i: Book of Proceedings. - : European Academy of Occupational Health Psychology. - 9780992878672 ; , s. 502-502
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Konferensbidrag (refereegranskat)abstract
- Introduction: Sickness absence (SA) has been shown to be associated with several negative consequences, both for the affected individual as well as for society on the whole, in terms of economic loss. The most common reason for SA is SA due to common mental disorders (CMDs). Previous studies have indicated that there is an association between exposure to work-related offensive behaviours, such as harassment, bullying, violence and threats of different kinds and CMDs. However, the mechanistic pathway in this association is still largely unknown. For example, the associations between exposure to offensive or abusive behaviours and health outcomes may partially be explained by individual characteristics, including genetic predispositions and early experiences. The aim of the present study was to investigate the role of familial factors (genetics and shared early-life environment) and neuroticism in the associations between exposure to work-related violence/threats and harassment/bullying, and SA due to CMDs.Method: The study sample included 8795 twin individuals from the Swedish Twin project of Disability pension and Sickness absence (STODS), including survey data from the Study of Twin Adults: Genes and Environment (STAGE) linked to national register data. Self-reported work-related violence and/or threats and work-related harassment including bullying and register data on SA due to CMDs were analysed using logistic regression on the whole sample, and conditional logistic regression among complete same-sex twin pairs discordant on exposures. Individuals were followed for a maximum of 13 years or until their first incident SA spell due to CMD. Interactions between neuroticism and exposures were assessed using both multiplicative and additive interaction analyses.Results: Exposure to work-related violence/threats were associated with higher odds of SA due to CMDs when adjusting for age, sex, marital status, children living at home, education, type of residential area, work characteristics, and symptoms of depression and burnout (OR 2.11, 95% CI 1.52-2.95). Higher odds of SA due to CMDs were also found for exposure to harassment/bullying (OR 1.52, 95% CI 1.10-2.11) and a combined indicator of exposure to either of the kinds of exposure or exposure to both kinds, i.e. violence/threats and/or harassment/bullying (OR 1.98 95% CI 1.52-2.59), compared with the unexposed. Analyses of twin pairs discordant on exposure, using the unexposed twin sibling as reference, showed somewhat reduced ORs that were no longer statistically significant for all exposures. No multiplicative interaction was found between neuroticism and exposure to work-related violence/threats, or harassment. However, a statistically significant additive interaction was found between neuroticism and exposure to violence/threats, with higher odds of SA due to CMDs in the group scoring lower on neuroticism.Conclusion: Exposure to work-related offensive behaviours were associated with SA due to CMDs. The results of the matched twin pair analysis indicated that these associations may be confounded by familial factors. In addition, an interaction effect between violence/threats and neuroticism was found. Thus, future studies investigating associations and causality between offensive behaviours at work and mental health-related outcomes should, when possible, consider familial factors and neuroticism.
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| 3. |
- Wijkander, Maria, et al.
(författare)
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The role of familial factors and neuroticism in the association between exposure to offensive behaviors at work and long-term sickness absence due to common mental disorders : a prospective twin study
- 2024
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Ingår i: BMC Public Health. - : Springer Nature. - 1471-2458. ; 24:1
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: The aim of this study was to investigate associations between exposure to work-related violence/threats and harassment, and future sickness absence (SA) due to common mental disorders (CMDs), taking familial factors (shared genetics and early-life environment) and neuroticism into account. Methods: The study sample included 8795 twin individuals from the Swedish Twin Project of Disability Pension and Sickness Absence (STODS), including survey data from the Study of Twin Adults: Genes and Environment (STAGE). Self-reported work-related violence and/or threats as well as work-related harassment (including bullying) and national register data on SA due to CMDs were analyzed using standard logistic regression, and conditional logistic regression among complete twin pairs discordant on exposures. Individuals were followed for a maximum of 13 years. Interactions between neuroticism and exposures were assessed using both multiplicative and additive interaction analyses. Results: Exposure to work-related violence/threats was associated with higher odds of SA due to CMDs when adjusting for age, sex, marital status, children, education, type of living area, work characteristics, and symptoms of depression and burnout (OR 2.11, 95% CI 1.52-2.95). Higher odds of SA due to CMDs were also found for exposure to harassment (OR 1.52, 95% CI 1.10-2.11) and a combined indicator of exposure to violence/threats and/or harassment (OR 1.98, 95% CI 1.52-2.59), compared with the unexposed. Analyses of twins discordant on exposure, using the unexposed co-twin as reference, showed reduced ORs. These ORs were still elevated but no longer statistically significant, potentially due to a lack of statistical power. No multiplicative interaction was found between neuroticism and exposure to work-related violence/threats, or harassment. However, a statistically significant additive interaction was found between neuroticism and exposure to violence/threats, indicating higher odds of SA due to CMDs in the group scoring lower on neuroticism. Conclusions: Exposure to work-related offensive behaviors was associated with SA due to CMDs. However, the results indicated that these associations may be partly confounded by familial factors. In addition, an interaction between exposure and neuroticism was suggested. Thus, when possible, future studies investigating associations and causality between offensive behaviors at work and mental health-related outcomes, should consider familial factors and neuroticism.
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| 4. |
- Wijkander, Maria, et al.
(författare)
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The role of familial factors and neuroticism in the association between exposure to offensive behaviors at work and long-term sickness absence due to common mental disorders - a prospective twin study
- 2024
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Ingår i: BMC Public Health. - : BioMed Central (BMC). - 1471-2458. ; 24:1
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Tidskriftsartikel (refereegranskat)abstract
- Objectives The aim of this study was to investigate associations between exposure to work-related violence/threats and harassment, and future sickness absence (SA) due to common mental disorders (CMDs), taking familial factors (shared genetics and early-life environment) and neuroticism into account.Methods The study sample included 8795 twin individuals from the Swedish Twin Project of Disability Pension and Sickness Absence (STODS), including survey data from the Study of Twin Adults: Genes and Environment (STAGE). Self-reported work-related violence and/or threats as well as work-related harassment (including bullying) and national register data on SA due to CMDs were analyzed using standard logistic regression, and conditional logistic regression among complete twin pairs discordant on exposures. Individuals were followed for a maximum of 13 years. Interactions between neuroticism and exposures were assessed using both multiplicative and additive interaction analyses.Results Exposure to work-related violence/threats was associated with higher odds of SA due to CMDs when adjusting for age, sex, marital status, children, education, type of living area, work characteristics, and symptoms of depression and burnout (OR 2.11, 95% CI 1.52-2.95). Higher odds of SA due to CMDs were also found for exposure to harassment (OR 1.52, 95% CI 1.10-2.11) and a combined indicator of exposure to violence/threats and/or harassment (OR 1.98, 95% CI 1.52-2.59), compared with the unexposed. Analyses of twins discordant on exposure, using the unexposed co-twin as reference, showed reduced ORs. These ORs were still elevated but no longer statistically significant, potentially due to a lack of statistical power. No multiplicative interaction was found between neuroticism and exposure to work-related violence/threats, or harassment. However, a statistically significant additive interaction was found between neuroticism and exposure to violence/threats, indicating higher odds of SA due to CMDs in the group scoring lower on neuroticism.Conclusions Exposure to work-related offensive behaviors was associated with SA due to CMDs. However, the results indicated that these associations may be partly confounded by familial factors. In addition, an interaction between exposure and neuroticism was suggested. Thus, when possible, future studies investigating associations and causality between offensive behaviors at work and mental health-related outcomes, should consider familial factors and neuroticism.
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