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- Iwanycki Ahlstrand, Natalie, et al.
(author)
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Travel Tales of a Worldwide Weed : Genomic Signatures of Plantago major L. Reveal Distinct Genotypic Groups With Links to Colonial Trade Routes
- 2022
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In: Frontiers in Plant Science. - : Frontiers Media S.A.. - 1664-462X. ; 13
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Journal article (peer-reviewed)abstract
- Retracing pathways of historical species introductions is fundamental to understanding the factors involved in the successful colonization and spread, centuries after a species’ establishment in an introduced range. Numerous plants have been introduced to regions outside their native ranges both intentionally and accidentally by European voyagers and early colonists making transoceanic journeys; however, records are scarce to document this. We use genotyping-by-sequencing and genotype-likelihood methods on the selfing, global weed, Plantago major, collected from 50 populations worldwide to investigate how patterns of genomic diversity are distributed among populations of this global weed. Although genomic differentiation among populations is found to be low, we identify six unique genotype groups showing very little sign of admixture and low degree of outcrossing among them. We show that genotype groups are latitudinally restricted, and that more than one successful genotype colonized and spread into the introduced ranges. With the exception of New Zealand, only one genotype group is present in the Southern Hemisphere. Three of the most prevalent genotypes present in the native Eurasian range gave rise to introduced populations in the Americas, Africa, Australia, and New Zealand, which could lend support to the hypothesis that P. major was unknowlingly dispersed by early European colonists. Dispersal of multiple successful genotypes is a likely reason for success. Genomic signatures and phylogeographic methods can provide new perspectives on the drivers behind the historic introductions and the successful colonization of introduced species, contributing to our understanding of the role of genomic variation for successful establishment of introduced taxa.
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| 2. |
- Enlund, Mats, et al.
(author)
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Impact of general anaesthesia on breast cancer survival: a 5-year follow up of a pragmatic, randomised, controlled trial, the CAN-study, comparing propofol and sevoflurane
- 2023
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In: EClinicalMedicine. - : Elsevier. - 2589-5370. ; 60
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Journal article (peer-reviewed)abstract
- Background Anaesthesia may impact long-term cancer survival. In the Cancer and Anaesthesia study, we hypothesised that the hypnotic drug propofol will have an advantage of at least five percentage points in five-year survival over the inhalational anaesthetic sevoflurane for breast cancer surgery. Methods From 2118 eligible breast cancer patients scheduled for primary curable, invasive breast cancer surgery, 1764 were recruited after ethical approval and individual informed consent to this open label, single-blind, randomised trial at four county- and three university hospitals in Sweden and one Chinese university hospital. Of surveyed patients, 354 were excluded, mainly due to refusal to participate. Patients were randomised by computer at the monitoring organisation to general anaesthesia maintenance with either intravenous propofol or inhaled sevoflurane in a 1:1 ratio in permuted blocks. Data related to anaesthesia, surgery, oncology, and demographics were registered. The primary endpoint was five-year overall survival. Data are presented as Kaplan-Meier survival curves and Hazard Ratios based on Cox univariable regression analyses by both intention-to-treat and perprotocol. EudraCT, 2013-002380-25 and ClinicalTrials.gov, NCT01975064. Findings Of 1764 patients, included from December 3, 2013, to September 29, 2017, 1670 remained for analysis. The numbers who survived at least five years were 773/841 (91.9% (95% CI 90.1-93.8)) in the propofol group and 764/829 (92.2% (90.3-94.0)) in the sevoflurane group, (HR 1.03 (0.73-1.44); P = 0.875); the corresponding results in the per-protocol-analysis were: 733/798 (91.9% (90.0-93.8)) and 653/710 (92.0% (90.0-94.0)) (HR = 1.01 (0.71-1.44); P = 0.955). Survival after a median follow-up of 76.7 months did not indicate any difference between the groups (HR 0.97, 0.72-1.29; P = 0.829, log rank test). Interpretation No difference in overall survival was found between general anaesthesia with propofol or sevoflurane for breast cancer surgery. Copyright (c) 2023 The Author(s). Published by Elsevier Ltd.
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| 4. |
- Ahlstrand, Inger, et al.
(author)
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Occupational balance and its relation to performance of valued life activities in persons with rheumatoid arthritis in working age
- 2018
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In: Annals of the Rheumatic Diseases. - : BMJ Publishing Group Ltd. - 0003-4967 .- 1468-2060. ; 77:Suppl. 2, s. 186-186
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Journal article (peer-reviewed)abstract
- Background Experience of balance in everyday activities where work is an essential part is important to health and well-being, as has also been observed in previous studies in people with rheumatoid arthritis (RA). The Valued life activity scale (VLA-swe) is a questionnaire in which patient’s first report if the separate activities are valued or not to perform and secondly difficulties to perform these activities. Occupational Balance Questionnaire (OBQ) focuses on satisfaction with the amount and variation of occupations.Objectives The objectives were to 1) describe the relationship between performance of valued activities and experienced occupational balance, and to 2) identify aspects associated with low occupational balance in persons with RA.Methods 368 persons (age 18–65 years, 77% women) with RA responded to a questionnaire measuring occupational balance (OBQ) and performance of valued life activities (VLA-swe). Other aspects of interest were activity limitations measured by Health Assessment Questionnaire (HAQ), pain (measured by VAS), continuous stress (stressed continuously for more than a month during the last 12 months), children at home, education, and living situation. The relation between OBQ and performance in VLA across genders and Workers/Non-workers were analysed using non-parametric correlation analyses. To identify the impact of different aspects on the likelihood that participants would report lower occupational balance, OBQ was analysed using workers/nonworkers, stress, gender, age, pain and difficulties performing valued activities as independent variables in logistic regressions models. The study was approved by the Regional Ethics Committee (Dnr2011/452–31).Results The OBQ was significantly related to difficulties to perform valued activities reported by VLA (r=-0.41, p<0.001). Having more difficulties performing valued activities was the strongest predictor of lower occupation balance and increased the risk of reporting lower occupation balance with nearly five times (OR=4.54, p 0.001). Continuous stress increased the risk of having lower occupation balance more than three times (OR=3.27, p<0.0001) than those who not reported being stressed. The other variables show no significant impact on the likelihood that the participants would report lower occupational balance.Conclusions The results showed support for the relationship between occupation balance and performance of valued life activities and highlights to identify what’s important for the individual and to assume that in the rehabilitation. The results also show the importance of ability to manage stress, in order to enable for retaining ability to work and achieve high occupational balance.
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| 5. |
- Andersen, Christen L., et al.
(author)
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A phase II study of vorinostat (MK-0683) in patients with polycythaemia vera and essential thrombocythaemia
- 2013
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In: British Journal of Haematology. - : Wiley. - 0007-1048 .- 1365-2141. ; 162:4, s. 498-508
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Journal article (peer-reviewed)abstract
- Inhibition of histone deacetylases may be an important target in patients with myeloproliferative neoplasms. This investigator-initiated, non-randomized, open-label phase II multi-centre study included 63 patients (19 essential thrombocythaemia, 44 polycythaemia vera) from 15 centres. The primary objective was to evaluate if vorinostat was followed by a decline in clonal myeloproliferation as defined by European Leukaemia Net. Thirty patients (48%) completed the intervention period (24 weeks of therapy). An intention-to-treat response rate of 35% was identified. Pruritus was resolved [19% to 0% (P=0.06)] and the prevalence of splenomegaly was lowered from 50% to 27% (P=0.03). Sixty-five per cent of the patients experienced a decrease in JAK2 V617F allele burden (P=0.006). Thirty-three patients (52% of patients) discontinued study drug before end of intervention due to adverse events (28 patients) or lack of response (5 patients). In conclusion, vorinostat showed effectiveness by normalizing elevated leucocyte and platelet counts, resolving pruritus and significantly reducing splenomegaly. However, vorinostat was associated with significant side effects resulting in a high discontinuation rate. A lower dose of vorinostat in combination with conventional and/or novel targeted therapies may be warranted in future studies.
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| 9. |
- Lindgren, Marie, 1971, et al.
(author)
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Survival and risk of vascular complications in myelofibrosis—A population-based study from the Swedish MPN group
- 2022
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In: European Journal of Haematology. - : Wiley. - 0902-4441 .- 1600-0609. ; 109:4, s. 336-342
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Journal article (peer-reviewed)abstract
- Objective: To gain knowledge of underlying risk factors for vascular complications and their impact on life expectancy in myelofibrosis. Methods: From a cohort of 392 myelofibrosis patients registered in the Swedish MPN registry 58 patients with vascular complications during follow-up were identified. Patients with vascular complications were compared with both 1:1 matched controls and the entire myelofibrosis cohort to explore potential risk factors for vascular complications and their impact on survival. Results: Incidence of vascular complications was 2.8 events per 100 patient-years and the majority of complications were thrombotic. Patients with complications were significantly older and had lower hemoglobin when compared to the entire cohort. In the case–control analysis, no significant risk factor differences were observed. The major cause of death was vascular complications and median survival was significantly impaired in patients with vascular complications (48 months) compared to controls (92 months). Inferior survival in patients with vascular complications was found to be dependent on IPSS risk category in a Cox regression model. Conclusion: Vascular complications have a considerable impact on survival in MF. At diagnosis, risk assessment by IPSS does not only predict survival but is also associated with the risk of vascular complications.
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| 10. |
- Metcalfe, Daniel B., et al.
(author)
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Effects of moisture dynamics on bryophyte carbon fluxes in a tropical cloud forest
- 2019
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In: New Phytologist. - : New Phytologist Trust. - 0028-646X .- 1469-8137. ; 222:4, s. 1766-1777
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Journal article (peer-reviewed)abstract
- Bryophytes play key roles in the ecological function of a number of major world biomes but remain understudied compared with vascular plants. Little is known about bryophyte responses to different aspects of predicted changes in moisture dynamics with climate change.In this study, CO2 fluxes and photosynthetic light responses were measured within bryophyte mesocosms, being subjected to different amounts, frequencies, and types (mist or rainfall) of water addition, both before and after different periods of complete desiccation.Bryophyte carbon fluxes and photosynthetic light response were generally affected by the magnitude and type, but not frequency, of watering events. Desiccation suppressed bryophyte carbon uptake even after rehydration, and the degree of uptake suppression progressively increased with desiccation duration. Estimated ecosystem-level bryophyte respiration and net carbon uptake were c. 58% and c. 3%, respectively, of corresponding fluxes from tree foliage at the site.Our results suggest that a simplified representation of precipitation processes may be sufficient to accurately model bryophyte carbon cycling under future climate scenarios. Further, we find that projected increases in drought could have strong negative impacts on bryophyte and ecosystem carbon storage, with major consequences for a wide range of ecosystem processes.
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| 13. |
- Språngberg, A, et al.
(author)
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SBU. Godartad prostataförstoring med avflödeshinder. En systematisk litteraturöversikt : Godartad prostataförstoring med avflödeshinder
- 2011
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Reports (other academic/artistic)abstract
- Slutsatser Godartad prostataförstoring (benign prostatahyperplasi, BPH) är ett vanligt tillstånd som med stigande ålder drabbar i princip alla män. En del av dessa män får urineringsproblem och cirka 4 500 opereras varje år för en förstorad prostata. Många med lindrigare besvär behandlas med läkemedel eller behöver ingen behandling alls. Avflödeshinder kan obehandlat ge allvarlig urinretention som skadar njurarna, och en urinstämma kan vara livshotande. För att avgränsa den grupp av män där problemen med urineringen beror på en förstorad prostata används ett tiotal olika diagnostiska metoder. När det gäller behandling finns det flera olika kirurgiska metoder, varav några är väl etablerade och andra av mer experimentell karaktär. Under 1990-talet har också flera läkemedel introducerats. SBU har därför bedömt att det funnits ett behov av att göra en systematisk genomgång av den vetenskapliga grunden för dessa olika metoder. Nedan följer de viktigaste slutsatserna av arbetet.
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| 14. |
- Steinz, Maarten M, et al.
(author)
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Oxidative hotspots on actin promote skeletal muscle weakness in rheumatoid arthritis
- 2019
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In: JCI Insight. - : American Society for Clinical Investigation (ASCI). - 2379-3708 .- 2324-7703 .- 2325-4556. ; 4:9
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Journal article (peer-reviewed)abstract
- Skeletal muscle weakness in patients suffering from rheumatoid arthritis (RA) adds to their impaired working abilities and reduced quality of life. However, little molecular insight is available on muscle weakness associated with RA. Oxidative stress has been implicated in the disease pathogenesis of RA. Here, we show that oxidative posttranslational modifications of the contractile machinery targeted to actin result in impaired actin polymerization and reduced force production. Using mass spectrometry, we identified the actin residues targeted by oxidative 3-nitrotyrosine (3-NT) or malondialdehyde (MDA) adduct modifications in weakened skeletal muscle from mice with arthritis and patients afflicted by RA. The residues were primarily located in 3 distinct regions positioned at matching surface areas of the skeletal muscle actin molecule from arthritic mice and patients with RA. Moreover, molecular dynamics simulations revealed that these areas, here coined "hotspots," are important for the stability of the actin molecule and its capacity to generate filaments and interact with myosin. Together, these data demonstrate how oxidative modifications on actin promote muscle weakness in RA patients and may provide novel leads for targeted therapeutic treatment to improve muscle function.
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