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Sökning: WFRF:(Alfredsson Lars)

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61.
  • Akerstedt, Torbjorn, et al. (författare)
  • Predicting long-term sickness absence from sleep and fatigue.
  • 2007
  • Ingår i: J Sleep Res. - : Wiley. - 0962-1105 .- 1365-2869. ; 16:4, s. 341-5
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Predicting long-term sickness absence from sleep and fatigue.Akerstedt T, Kecklund G, Alfredsson L, Selen J.Institute for Psychosocial Medicine, Public Health Sciences, Karolinska Institutet, Stockholm, Sweden. torbjorn.akerstedt@ipm.ki.seDisturbed or shortened sleep is prospectively related to disease. One might also expect that sickness absence would be another consequence but very little data seem to exist. The present study used 8300 individuals in a national sample to obtain information on reports of disturbed sleep and fatigue 1 year and merged this with data on long-term sickness absence 2 years later. A logistic regression analysis was applied to the data with adjustments for demographic and work environment variables. The results showed that individuals without registered sickness absence at the start had a higher probability of entering a period of long-term (>/=90 days, odds ratio [OR] = 1.24 with 95% confidence interval [CI] = 1.02-1.51) sickness absence 2 years later if they reported disturbed sleep at the start. The figure for fatigue was OR = 1.35 (CI = 1.14-1.60). When fatigue or disturbed sleep was separately excluded the OR increased to OR = 1.44 and OR = 1.47, respectively. Intermediate sickness absence (14-89 days) showed similar but slightly weaker results. The results indicate that disturbed sleep and fatigue are predictors of long-term absence and it is suggested that impaired sleep may be part of a chain of causation, considering its effects on fatigue.PMID: 18036078 [PubMed - in process]
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62.
  • Alfredsson, Joakim, et al. (författare)
  • Gender differences in management and outcome in non-ST-elevation acute coronary syndrome
  • 2007
  • Ingår i: Heart. - : BMJ Publishing group Ltd. - 1355-6037 .- 1468-201X. ; 93:11, s. 1357-1362
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: To study gender differences in management and outcome in patients with non-ST-elevation acute coronary syndrome. Design, setting and patients: Cohort study of 53 781 consecutive patients (37% women) from the Register of Information and Knowledge about Swedish Heart Intensive care Admissions (RIKS-HIA), with a diagnosis of either unstable angina pectoris or non-ST-elevation myocardial infarction. All patients were admitted to intensive coronary care units in Sweden, between 1998 and 2002, and followed for 1 year. Main outcome measures: Treatment intensity and in-hospital, 30-day and 1 -year mortality. Results: Women were older (73 vs 69 years, p<0.001) and more likely to have a history of hypertension and diabetes, but less likely to have a history of myocardial infarction or revascularisation. After adjustment, there were no major differences in acute pharmacological treatment or prophylactic medication at discharge. Revascularisation was, however, even after adjustment, performed more often in men (OR 1.15, 95% CI, 1.09 to 1.21). After adjustment, there was no significant difference in in-hospital (OR 1.03, 95% CI, 0.94 to 1.13) or 30-days (OR 1.07, 95% CI, 0.99 to 1.15) mortality, but at 1 year being male was associated with higher mortality (OR 1.12, 95% CI, 1.06 to 1.19). Conclusion: Although women are somewhat less intensively treated, especially regarding invasive procedures, after adjustment for differences in background characteristics, they have better long-term outcomes than men.
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63.
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64.
  • Alfredsson, Joakim, et al. (författare)
  • Impact of an invasive strategy on 5 years outcome in men and women with non-ST-segment elevation acute coronary syndromes
  • 2014
  • Ingår i: American Heart Journal. - : Elsevier. - 0002-8703 .- 1097-6744. ; 168:4, s. 522-529
  • Tidskriftsartikel (refereegranskat)abstract
    • Background A routine invasive (RI) strategy in non-ST-segment elevation acute coronary syndromes (NSTE ACS) has been associated with better outcome compared with a selective invasive (SI) strategy in men, but results in women have yielded disparate results. The aim of this study was to assess gender differences in long-term outcome with an SI compared with an RI strategy in NSTE ACS. Methods Individual patient data were obtained from the FRISC II trial, ICTUS trial, and RITA 3 trial for a collaborative meta-analysis. Results Men treated with an RI strategy had significantly lower rate of the primary outcome 5-year cardiovascular (CV) death/myocardial infarction (MI) compared with men treated with an SI strategy (15.6% vs 19.8%, P = .001); risk-adjusted hazards ratio (HR) 0.73 (95% CI 0.63-0.86). In contrast, there was little impact of an RI compared with an SI strategy on the primary outcome among women (16.5% vs 15.1%, P = .324); risk-adjusted HR 1.13 (95% CI 0.89-1.43), interaction P = .01. For the individual components of the primary outcome, a similar pattern was seen with lower rate of MI (adjusted HR 0.69, 95% CI 0.57-0.83) and CV death (adjusted HR 0.71, 95% CI 0.56-0.89) in men but without obvious difference in women in MI (adjusted HR 1.13, 95% CI 0.85-1.50) or CV death (adjusted HR 0.97, 95% CI 0.68-1.39). Conclusions In this meta-analysis comparing an SI and RI strategy, benefit from an RI strategy during long-term follow-up was confirmed in men. Conversely, in women, there was no evidence of benefit.
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65.
  • Alfredsson, Johannes, et al. (författare)
  • Isobaric labeling-based quantitative proteomics of FACS-purified immune cells and epithelial cells from the intestine of Crohn's disease patients reveals proteome changes of potential importance in disease pathogenesis.
  • 2023
  • Ingår i: Proteomics. - : Wiley. - 1615-9861 .- 1615-9853. ; 23:5
  • Tidskriftsartikel (refereegranskat)abstract
    • Crohn's disease (CD) is a chronic condition characterized by recurrent flares of inflammation in the gastrointestinal tract. Disease etiology is poorly understood and is characterized by dysregulated immune activation that progressively destroys intestinal tissue. Key cellular compartments in disease pathogenesis are the intestinal epithelial layer and its underlying lamina propria. While the epithelium contains predominantly epithelial cells, the lamina propria is enriched in immune cells. Deciphering proteome changes in different cell populations is important to understand CD pathogenesis. Here, using isobaric labeling-based quantitative proteomics, we perform an exploratory study to analyze in-depth proteome changes in epithelial cells, immune cells and stromal cells in CD patients compared to controls using cells purified by FACS. Our study revealed increased proteins associated with neutrophil degranulation and mitochondrial metabolism in immune cells of CD intestinal mucosa. We also found upregulation of proteins involved in glycosylation and secretory pathways in epithelial cells of CD patients, while proteins involved in mitochondrial metabolism were reduced. The distinct alterations in protein levels in immune- versus epithelial cells underscores the utility of proteome analysis of defined cell types. Moreover, our workflow allowing concomitant assessment of cell-type specific changes on an individual basis enables deeper insight into disease pathogenesis.
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66.
  • Alfredsson, Joakim, et al. (författare)
  • Similar outcome with an invasive strategy in men and women with Non ST-Elevation Acute Coronary Syndromes
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • Background: Gender differences in benefit from an early invasive strategy in patients with Non ST-elevation Acute Coronary Syndromes (NSTE ACS) have been debated and results are conflicting. Some studies have even indicated harm for women associated with a routine invasive strategy. Method: We included 46 455 patients ( 14 819 women (32%) and 31 636 men (68%)) from The Register of Information and Knowledge about Swedish Heart Intensive care Admissions (RIKS-HIA), with a diagnosis of either unstable angina pectoris or non-ST-elevation myocardial infarction. All patients were admitted to intensive coronary care units in Sweden, between 2000 and 2006, and followed for 1 year. Adjustment for baseline differences between the genders was made. Results: In the non-invasive strategy arm relative risk (RR) of death was (women vs. men) 1.02 (95% CI, 0.94-1.11) and in the invasive strategy arm 1.12 (95% CI, 0.96-1.29). After adjustment for baseline differences between the genders with propensity score and discharge medication there was a trend towards lower mortality among women, RR 0.90 (95% CI, 0.82-0.99) in the early non-invasive group but still no difference in the early invasive cohort RR 0.90 (95% CI, 0.76-1.06). Results were similar with the combined end-point death/MI. The risk reduction with an invasive strategy was similar in women (RR 0.46 (95% CI 0.38-0.55)) and men (RR 0.45 (95% CI 0.40-0.52). Conclusion: In this large cohort of patients with NSTE ACS, reflecting real life management, women and men had similar outcome and similar benefit with an early invasive strategy.
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67.
  • Alfredsson, Joakim, et al. (författare)
  • Similar outcome with an invasive strategy in men and women with non-ST-elevation acute coronary syndromes From the Swedish Web-System for Enhancement and Development of Evidence-Based Care in Heart Disease Evaluated According to Recommended Therapies (SWEDEHEART)
  • 2011
  • Ingår i: European Heart Journal. - : Oxford University Press (OUP): Policy B. - 0195-668X .- 1522-9645. ; 32:24, s. 3128-3136
  • Tidskriftsartikel (refereegranskat)abstract
    • Aims To assess gender differences in outcome with an early invasive or non-invasive strategy in patients with non-ST-elevation acute coronary syndromes (NSTE ACS). less thanbrgreater than less thanbrgreater thanMethods and results We included 46 455 patients [14 819 women (32%) and 31 636 men (68%)] from the SWEDEHEART register, with NSTE ACS, between 2000 and 2006, and followed them for 1 year. In the non-invasive strategy arm, the relative risk (RR) of death was (women vs. men) 1.02 [95% confidence interval (CI), 0.94-1.11] and in the invasive strategy arm 1.12 (95% CI, 0.96-1.29). After adjustment for baseline differences between the genders, with propensity score and discharge medication, there was a similar trend towards better outcome among women in both the early non-invasive cohort [RR 0.90 (95% CI, 0.82-0.99)] and the early invasive cohort [RR 0.90 (95% CI, 0.76-1.06)], although it did not reach statistical significance in the early invasive cohort. Results were similar with the combined endpoint death/myocardial infarction. An early invasive treatment was associated with a marked, and similar, mortality reduction in women [RR 0.46 (95% CI, 0.38-0.55)] and men [RR 0.45 (95% CI, 0.40-0.52)], without interaction with gender. less thanbrgreater than less thanbrgreater thanConclusion In this large cohort of patients with NSTE ACS, reflecting real-life management, women and men had similar and better outcome associated with an invasive strategy.
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68.
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69.
  • Alfredsson, Lars-Inge, 1964- (författare)
  • VLSI Architectures and Arithmetic Operations with Application to the Fermat Number Transform
  • 1996
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • The properties of arithmetic operations in Fermat integer quotient rings 2m+1, where m = 2t, are investigated. The arithmetic operations considered are mainly those involved in the computation of the Fermat number transform. We consider some ways of representing the binary coded integers in such rings and investigate VLSI architectures for arithmetic operations, with respect to the different element representations. The VLSI architectures are mutually compared with respect to area (A) and time (T) complexity and area-time performance (AT2). The VLSI model chosen is a linears witch-level RC model.In the polar representation, the nonzero elements of a field are represented by the powers of a primitive element of the field. In the thesis we particularly investigate the properties of arithmetic operations and their corresponding VLSI architectureswith respect to the polar representation of the elements of Fermat prime fields. Somenew results regarding the applicability of the Fermat number transform when usingthe polar representation are also presented.
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70.
  • Alfredsson, Lars, et al. (författare)
  • Job strain and major risk factors for coronary heart disease. : Baseline results from the WOLF Study
  • 2002
  • Ingår i: Scandinavian Journal of Work, Environment & Health. - 0355-3140. ; 28:4, s. 238-248
  • Tidskriftsartikel (refereegranskat)abstract
    • The results do not support the hypothesis that job strain has an adverse impact on serum total cholesterol and plasma fibrinogen levels. They suggest that an increased risk of coronary heart disease in association with job strain, if causal, is mediated by other factors, possibly partly by hypertension and low levels of high-density lipoprotein cholesterol.
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