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Sökning: WFRF:(Nilsson Mats) > Högskolan i Skövde

  • Resultat 1-8 av 8
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1.
  • Jansson, Andreas, et al. (författare)
  • Toward quantifying the thymic dysfunction state in mouse models of inflammatory bowel disease
  • 2013
  • Ingår i: Inflammatory Bowel Diseases. - Philadelphia, USA : Lippincott Williams & Wilkins. - 1078-0998 .- 1536-4844. ; 19:4, s. 881-888
  • Forskningsöversikt (refereegranskat)abstract
    • Inflammatory bowel disease is characterized by a number of immunological alterations, not the least in the T-cell compartment. Numerous animal models of colitis have revealed aberrant thymocyte dynamics associated with skewed thymocyte development. The recent advancements in quantitative methods have proposed critical kinetic alterations in the thymocyte development during the progression of colitis. This review focuses on the aberrant thymocyte dynamics in Gαi2-deficient mice as this mouse model provides most quantitative data of the thymocyte development associated with colitis. Herein, we discuss several dynamic changes during the progression of colitis and propose a hypothesis for the underlying causes for the skewed proportions of the thymocyte populations seen in the Gαi2-deficient mice and in other mouse models of colitis.
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2.
  • Laurio, Kim, et al. (författare)
  • Evolutionary search for improved path diagrams
  • 2007
  • Ingår i: Evolutionary Computation, Machine Learning and Data Mining in Bioinformatics. - Berlin, Heidelberg : Springer Berlin/Heidelberg. - 9783540717829 - 9783540717836 ; , s. 114-121
  • Konferensbidrag (refereegranskat)abstract
    • A path diagram relates observed, pairwise, variable correlations to a functional structure which describes the hypothesized causal relations between the variables. Here we combine path diagrams, heuristics and evolutionary search into a system which seeks to improve existing gene regulatory models. Our evaluation shows that once a correct model has been identified it receives a lower prediction error compared to incorrect models, indicating the overall feasibility of this approach. However, with smaller samples the observed correlations gradually become more misleading, and the evolutionary search increasingly converges on suboptimal models. Future work will incorporate publicly available sources of experimentally verified biological facts to computationally suggest model modifications which might improve the model’s fitness.
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3.
  • Lindström, Birgitta, et al. (författare)
  • Six Issues in Testing Event-Triggered Real-Time Systems
  • 2007
  • Rapport (övrigt vetenskapligt/konstnärligt)abstract
    • Verification of real-time systems is a complex task, with problems coming from issues like concurrency. A previous paper suggested dealing with these problems by using a time-triggered design, which gives good support both for testing and formal analysis. However, atime-triggered solution is not always feasible and an event-triggered design is needed. Event-triggered systems are far more difficult to test than time-triggered systems.This paper revisits previously identified testing problems from a new perspective and identifies additional problems for event-triggered systems. The paper also presents an approach to deal with these problems. The TETReS project assumes a model-driven developmentprocess. We combine research within three different fields: (i) transformation of rule sets between timed automata specifications and ECA rules with maintained semantics, (ii) increasing testability in event-triggered system, and (iii) development of test case generation methods for event-triggered systems.
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4.
  • Nilsson, Hanna, et al. (författare)
  • Is preoperative physical activity related to post-surgery recovery? : A cohort study of patients with breast cancer
  • 2016
  • Ingår i: BMJ Open. - : BMJ. - 2044-6055. ; 6:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: The aim of our study is to assess the association between preoperative level of activity and recovery after breast cancer surgery measured as hospital stay, length of sick leave and self-assessed physical and mental recovery. Design: A prospective cohort study. Setting: Patients included were those scheduled to undergo breast cancer surgery, between February and November 2013, at two participating hospitals in the Western Region of Sweden. Participants: Patients planned for breast cancer surgery filled out a questionnaire before, as well as at 3 and 6 weeks after the operation. The preoperative level of activity was self-assessed and categorised into four categories by the participants using the 4-level SaltinGrimby Physical Activity Level Scale (SGPALS). Main outcome measure: Our main outcome was postoperative recovery measured as length of sick leave, in-hospital stay and self-assessed physical and mental recovery. Results: 220 patients were included. Preoperatively, 14% (31/220) of participants assessed themselves to be physically inactive, 61% (135/220) to exert some light physical activity (PA) and 20% (43/220) to be more active (level 3+4). Patients operated with mastectomy versus partial mastectomy and axillary lymph node dissection versus sentinel node biopsy were less likely to have a short hospital stay, relative risk (RR) 0.88 (0.78 to 1.00) and 0.82 (0.70 to 0.96). More active participants (level 3 or 4) had an 85% increased chance of feeling physically recovered at 3 weeks after the operation, RR 1.85 (1.20 to 2.85). No difference was seen after 6 weeks. Conclusions: The above study shows that a higher preoperative level of PA is associated with a faster physical recovery as reported by the patients 3 weeks post breast cancer surgery. After 6 weeks, most patients felt physically recovered, diminishing the association above. No difference was seen in length of sick leave or self-assessed mental recovery between inactive or more active patients.
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6.
  • Nilsson, Stefan, et al. (författare)
  • Children's voices : Differentiating a child perspective from a child's perspective
  • 2015
  • Ingår i: Developmental Neurorehabilitation. - : Taylor & Francis. - 1751-8423 .- 1751-8431. ; 18:3, s. 162-168
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE:The aim of this paper was to discuss differences between having a child perspective and taking the child's perspective based on the problem being investigated.METHODS:Conceptual paper based on narrative review.RESULTS:The child's perspective in research concerning children that need additional support are important. The difference between having a child perspective and taking the child's perspective in conjunction with the need to know children's opinions has been discussed in the literature. From an ideological perspective the difference between the two perspectives seems self-evident, but the perspectives might be better seen as different ends on a continuum solely from an adult's view of children to solely the perspective of children themselves. Depending on the research question, the design of the study may benefit from taking either perspective. In this article, we discuss the difference between the perspectives based on the problem being investigated, children's capacity to express opinions, environmental adaptations and the degree of interpretation needed to understand children's opinions.CONCLUSION:The examples provided indicate that children's opinions can be regarded in most research, although to different degrees.
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7.
  • Onerup, Aron, 1983, et al. (författare)
  • Is preoperative physical activity related to post-surgery recovery? : A cohort study of colorectal cancer patients
  • 2016
  • Ingår i: International Journal of Colorectal Disease. - : Springer Science and Business Media LLC. - 0179-1958 .- 1432-1262. ; 31:6, s. 1131-1140
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: An increasing interest is seen in the role of preoperative physical activity (PA) in enhancing postoperative recovery. The short-term effect of preoperative PA on recovery after colorectal cancer is unknown. The aim of this study was to evaluate the association of the preoperative level of PA with postoperative recovery after surgery due to colorectal cancer disease. Methods: This is a prospective observational cohort study, with 115 patients scheduled to undergo elective colorectal surgery. The self-reported level of preoperative PA was compared to measures of recovery. Results: Regular self-reported preoperative PA was associated with a higher chance of feeling highly physically recovered 3 weeks after surgery (relative chance 3.3, p = 0.038), compared to physical inactivity. No statistically significant associations were seen with length of hospital stay, self-assessed mental recovery, re-admittances or with re-operations. Discussion: In clinical practice, evaluating the patients’ level of PA is feasible and may potentially be used as a prognostic tool for patients undergoing colorectal cancer surgery. Given the study design, the results from this study cannot prove causality. Conclusion: The present study found that the preoperative level of PA was associated with a faster self-assessed physical recovery after colorectal cancer surgery. PA did not show any associations with the primary outcome measure length of hospital stay or any of the other secondary outcome measures. Assessment of PA level preoperatively could be used for prognostic reasons. If systematic preoperative/postoperative physical training will enhance recovery, this remains to be studied in a randomized controlled study. Highlights: We examined preoperative physical activity and the recovery after colorectal cancer surgery.Physically active individuals had faster self-assessed physical recovery.Assessment of preoperative physical activity may provide prognostic clinical information. © 2016, Springer-Verlag Berlin Heidelberg.
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8.
  • Onerup, Aron, 1983, et al. (författare)
  • The preoperative level of physical activity is associated to the postoperative recovery after elective cholecystectomy : A cohort study
  • 2015
  • Ingår i: International Journal of Surgery. - : Ovid Technologies (Wolters Kluwer Health). - 1743-9191 .- 1743-9159. ; 19:July, s. 35-41
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction There is an increasing interest in the role of preoperative physical activity for postoperative recovery. The effect of preoperative physical activity and recovery after cholecystectomy is unknown. The aim of this study was to evaluate the association of self-reported leisure-time preoperative physical activity with postoperative recovery and complications after elective cholecystectomy due to gallstone disease. Methods Prospective observational cohort study with 200 patients scheduled to undergo elective cholecystectomy. Level of self-assessed leisure-time physical activity was compared with recovery. Results Regular physical activity was associated with a higher degree of return to work within three weeks post-operatively (relative chance (RC) 1.26, p = 0.040); with a higher chance of leaving hospital within one day post-op (RC 1.23, p = 0.001), as well as with better mental recovery (RC 1.18, p = 0.049), compared to physically inactive. No statistically significant association was seen with return to work within one week or with self-assessed physical recovery. Discussion In clinical practice, evaluating the patients’ level of physical activity is feasible, and may potentially be used to identify patients being more suitable for same-day surgery. Given the study design, the results from this study cannot prove causality. Conclusion The present study shows that the preoperative leisure-time physical activity-level, is positively associated with less sick leave, a shorter hospital stay and with better mental recovery, three weeks post-elective cholecystectomy. We recommend assessing the physical activity-level preoperatively for prognostic reasons. If preoperative/postoperative physical training will increase recovery remains to be shown in a randomized controlled study.
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