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Sökning: LAR1:lu > Umeå universitet

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1.
  • 1897 Mediehistorier kring Stockholmsutställningen
  • 2006
  • Samlingsverk (redaktörskap) (övrigt vetenskapligt)abstract
    • Mediehistoria var länge liktydigt med historien om 1900-­talets massmedier – press, radio, teve och film. I den här boken skildras istället ett äldre medielandskap. Med utgångspunkt i Stockholms-­ utställningen 1897 beskriver författarna det utbud av gamla och nya medier som samlades på utställningen, från äldre attraktioner som camera obscura, dioramor och vaxfigurer till spektakulära nyheter som fonograf, kinematograf och röntgenbilder. Boken ger inblickar i några av det sena 1800-­talets ledande medieindust-­ rier, och diskuterar bland annat frågor om mediekonsumtion, publikpositioner och historiska medieringsvillkor. Sammantaget framträder en komplex mediekultur med förbindelser både till det förra sekelskiftets museiinstitutioner och ett äldre utbud av audiovisuella attraktioner, men också till 1900-­talets förmenta mediemodernitet och våra dagars digitala ”revolution”.De medietekniker som presenterades på Stockholmsutställning-­ en 1897 lagrade på samma gång utställningen för framtiden. Ett centralt tema är därför hur dessa medieringar blivit identiska med minnet av utställningen, och hur detta arkiv organiserats utifrån mediernas specifika egenskaper. På den dvd-­skiva som medföljer boken har ett nytt mediearkiv skapats över Stock-­ holmsutställningen 1897 och dess många länkar till en bredare mediekultur.
2.
  • Abbas, Sascha, et al. (författare)
  • Dietary intake of vitamin d and calcium and breast cancer risk in the European prospective investigation into cancer and nutrition
  • 2013
  • Ingår i: Nutrition and Cancer. - Taylor & Francis. - 0163-5581. ; 65:2, s. 178-187
  • Tidskriftsartikel (refereegranskat)abstract
    • Studies assessing the effects of vitamin D or calcium intake on breast cancer risk have been inconclusive. Furthermore, few studies have evaluated them jointly. This study is the largest so far examining the association of dietary vitamin D and calcium intake with breast cancer risk in the European Prospective Investigation into Cancer and Nutrition. During a mean follow-up of 8.8 yr, 7760 incident invasive breast cancer cases were identified among 319,985 women. Multivariable Cox proportional hazards regression was used to estimate hazard ratios (HR) and 95% confidence intervals (CI) for pre- and postmenopausal breast cancer risk. Comparing the highest with the lowest quintile of vitamin D intake, HR and 95% CI were 1.07 (0.87-1.32) and 1.02 (0.90-1.16) for pre- and postmenopausal women, respectively. The corresponding HR and 95% CIs for calcium intake were 0.98 (0.80-1.19) and 0.90 (0.79-1.02), respectively. For calcium intake in postmenopausal women, the test for trend was borderline statistically significant (P(trend) = 0.05). There was no significant interaction between vitamin D and calcium intake and cancer risk (P(interaction) = 0.57 and 0.22 in pre- and postmenopausal women, respectively). In this large prospective cohort, we found no evidence for an association between dietary vitamin D or calcium intake and breast cancer risk.
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3.
  • Abbas, S, et al. (författare)
  • Dietary vitamin D intake and risk of type 2 diabetes in the European Prospective Investigation into Cancer and Nutrition: the EPIC-InterAct study
  • 2014
  • Ingår i: European Journal of Clinical Nutrition. - Nature Publishing Group. - 1476-5640. ; 68:2, s. 196-202
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND/OBJECTIVES: Prospective cohort studies have indicated that serum vitamin D levels are inversely related to risk of type 2 diabetes. However, such studies cannot determine the source of vitamin D. Therefore, we examined the association of dietary vitamin D intake with incident type 2 diabetes within the European Prospective Investigation into Cancer and Nutrition (EPIC)-InterAct study in a heterogeneous European population including eight countries with large geographical variation. SUBJECTS/METHODS: Using a case-cohort design, 11 245 incident cases of type 2 diabetes and a representative subcohort (N = 15 798) were included in the analyses. Hazard ratios (HR) and 95% confidence intervals (CIs) for type 2 diabetes were calculated using a Prentice-weighted Cox regression adjusted for potential confounders. Twenty-four-hour diet-recall data from a subsample (N = 2347) were used to calibrate habitual intake data derived from dietary questionnaires. RESULTS: Median follow-up time was 10.8 years. Dietary vitamin D intake was not significantly associated with the risk of type 2 diabetes. HR and 95% CIs for the highest compared to the lowest quintile of uncalibrated vitamin D intake was 1.09 (0.97-1.22) (P-trend = 0.17). No associations were observed in a sex-specific analysis. The overall pooled effect (HR (95% CI)) using the continuous calibrated variable was 1.00 (0.97-1.03) per increase of 1 mg/day dietary vitamin D. CONCLUSIONS: This observational study does not support an association between higher dietary vitamin D intake and type 2 diabetes incidence. This result has to be interpreted in light of the limited contribution of dietary vitamin D on the overall vitamin D status of a person.
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4.
  • Abe, O, et al. (författare)
  • Effects of radiotherapy and of differences in the extent of surgery for early breast cancer on local recurrence and 15-year survival: an overview of the randomised trials
  • 2005
  • Ingår i: Lancet (London, England). - 1474-547X. ; 366:9503, s. 2087-2106
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: In early breast cancer, variations in local treatment that substantially affect the risk of locoregional recurrence could also affect long-term breast cancer mortality. To examine this relationship, collaborative meta-analyses were undertaken, based on individual patient data, of the relevant randomised trials that began by 1995. METHODS: Information was available on 42,000 women in 78 randomised treatment comparisons (radiotherapy vs no radiotherapy, 23,500; more vs less surgery, 9300; more surgery vs radiotherapy, 9300). 24 types of local treatment comparison were identified. To help relate the effect on local (ie, locoregional) recurrence to that on breast cancer mortality, these were grouped according to whether or not the 5-year local recurrence risk exceeded 10% (<10%, 17,000 women; >10%, 25,000 women). FINDINGS: About three-quarters of the eventual local recurrence risk occurred during the first 5 years. In the comparisons that involved little (<10%) difference in 5-year local recurrence risk there was little difference in 15-year breast cancer mortality. Among the 25,000 women in the comparisons that involved substantial (>10%) differences, however, 5-year local recurrence risks were 7% active versus 26% control (absolute reduction 19%), and 15-year breast cancer mortality risks were 44.6% versus 49.5% (absolute reduction 5.0%, SE 0.8, 2p<0.00001). These 25,000 women included 7300 with breast-conserving surgery (BCS) in trials of radiotherapy (generally just to the conserved breast), with 5-year local recurrence risks (mainly in the conserved breast, as most had axillary clearance and node-negative disease) 7% versus 26% (reduction 19%), and 15-year breast cancer mortality risks 30.5% versus 35.9% (reduction 5.4%, SE 1.7, 2p=0.0002; overall mortality reduction 5.3%, SE 1.8, 2p=0.005). They also included 8500 with mastectomy, axillary clearance, and node-positive disease in trials of radiotherapy (generally to the chest wall and regional lymph nodes), with similar absolute gains from radiotherapy; 5-year local recurrence risks (mainly at these sites) 6% versus 23% (reduction 17%), and 15-year breast cancer mortality risks 54.7% versus 60.1% (reduction 5.4%, SE 1.3, 2p=0.0002; overall mortality reduction 4.4%, SE 1.2, 2p=0.0009). Radiotherapy produced similar proportional reductions in local recurrence in all women (irrespective of age or tumour characteristics) and in all major trials of radiotherapy versus not (recent or older; with or without systemic therapy), so large absolute reductions in local recurrence were seen only if the control risk was large. To help assess the life-threatening side-effects of radiotherapy, the trials of radiotherapy versus not were combined with those of radiotherapy versus more surgery. There was, at least with some of the older radiotherapy regimens, a significant excess incidence of contralateral breast cancer (rate ratio 1.18, SE 0.06, 2p=0.002) and a significant excess of non-breast-cancer mortality in irradiated women (rate ratio 1.12, SE 0.04, 2p=0.001). Both were slight during the first 5 years, but continued after year 15. The excess mortality was mainly from heart disease (rate ratio 1.27, SE 0.07, 2p=0.0001) and lung cancer (rate ratio 1.78, SE 0.22, 2p=0.0004). INTERPRETATION: In these trials, avoidance of a local recurrence in the conserved breast after BCS and avoidance of a local recurrence elsewhere (eg, the chest wall or regional nodes) after mastectomy were of comparable relevance to 15-year breast cancer mortality. Differences in local treatment that substantially affect local recurrence rates would, in the hypothetical absence of any other causes of death, avoid about one breast cancer death over the next 15 years for every four local recurrences avoided, and should reduce 15-year overall mortality.
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5.
  • Abelsson, J, et al. (författare)
  • The outcome of allo-HSCT for 92 patients with myelofibrosis in the Nordic countries
  • 2012
  • Ingår i: Bone Marrow Transplantation. - Nature Publishing Group. - 0268-3369. ; 47:3, s. 380-386
  • Tidskriftsartikel (refereegranskat)abstract
    • Between 1982 and 2009 a total of 92 patients with myelofibrosis (MF) in chronic phase underwent allo-SCT in nine Nordic transplant centers. Myeloablative conditioning (MAC) was given to 40 patients, and reduced intensity conditioning (RIC) was used in 52 patients. The mean age in the two groups at transplantation was 46±12 and 55±8 years, respectively (P&lt;0.001). When adjustment for age differences was made, the survival of the patients treated with RIC was significantly better (P=0.003). Among the RIC patients, the survival was significantly (P=0.003) better for the patients with age &lt;60 years (a 10-year survival close to 80%) than for the older patients. The type of stem cell donor did not significantly affect the survival. No significant difference was found in TRM at 100 days between the MAC- and the RIC-treated patients. The probability of survival at 5 years was 49% for the MAC-treated patients and 59% in the RIC group (P=0.125). Patients treated with RIC experienced significantly less aGVHD compared with patients treated with MAC (P&lt;0.001). The OS at 5 years was 70, 59 and 41% for patients with Lille score 0, 1 and 2, respectively (P=0.038, when age adjustment was made). Twenty-one percent of the patients in the RIC group were given donor lymphocyte infusion because of incomplete donor chimerism, compared with none of the MAC-treated patients (P&lt;0.002). Nine percent of the patients needed a second transplant because of graft failure, progressive disease or transformation to AML, with no significant difference between the groups. Our conclusions are (1) allo-SCT performed with RIC gives a better survival compared with MAC. (2) age over 60 years is strongly related to a worse outcome and (3) patients with higher Lille score had a shorter survival.Bone Marrow Transplantation advance online publication, 9 May 2011; doi:10.1038/bmt.2011.91.
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6.
  • Abrahamsson, J, et al. (författare)
  • Improved outcome after relapse in children with acute myeloid leukaemia.
  • 2007
  • Ingår i: British journal of haematology. - 0007-1048. ; 136:2, s. 229-236
  • Tidskriftsartikel (refereegranskat)abstract
    • In the Nordic Society for Paediatric Haematology and Oncology paediatric study acute myeloid leukaemia (AML) 93, event-free survival was 50% and overall survival was 66%, indicating that many patients were cured following relapse. Factors influencing outcome in children with relapsed AML were investigated. The study included all 146 children in the Nordic countries diagnosed with AML between 1988 and 2003, who relapsed. Data on disease characteristics and relapse treatment were related to outcome. Sixty-six percentage achieved remission with survival after relapse (5 years) 34 +/- 4%. Of 122 patients who received re-induction therapy, 77% entered remission with 40 +/- 5% survival. Remission rates were similar for different re-induction regimens but fludarabine, cytarabine, granulocyte colony-stimulating factor-based therapy had low treatment-related mortality. Prognostic factors for survival were duration of first complete remission (CR1) and stem cell transplantation (SCT) in CR1. In early relapse (&lt;1 year in CR1), survival was 21 +/- 5% compared with 48 +/- 6% in late relapse. For children receiving re-induction therapy, survival in early relapse was 29 +/- 6% and 51 +/- 6% in late. Patients treated in CR1 with SCT, autologous SCT or chemotherapy had a survival of 18 +/- 9, 5 +/- 5 and 41 +/- 5%, respectively. Survival was 62 +/- 6% in 64 children given SCT as part of their relapse therapy. A significant proportion of children with relapsed AML can be cured, even those with early relapse. Children who receive re-induction therapy, enter remission and proceed to SCT can achieve a cure rate of 60%.
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7.
  • Abrahamsson, Jonas, et al. (författare)
  • Response-guided induction therapy in pediatric acute myeloid leukemia with excellent remission rate.
  • 2011
  • Ingår i: Journal of clinical oncology : official journal of the American Society of Clinical Oncology. - 1527-7755. ; 29:3, s. 310-5
  • Tidskriftsartikel (refereegranskat)abstract
    • PurposeTo evaluate the early treatment response in children with acute myeloid leukemia (AML) using a response-guided induction strategy that includes idarubicin in the first course.Patients and MethodsAll Nordic children with AML younger than 15 years (n = 151) were treated on the Nordic Society for Pediatric Hematology and Oncology (NOPHO) AML 2004 protocol. After the first course of idarubicin, cytarabine, etoposide, and 6-thioguanin, patients with good response were allowed hematologic recovery before the second course, whereas patients with a poor (&gt;= 15% blasts) or intermediate (5% to 14.9% blasts) were recommended to proceed immediately with therapy. Patients not in remission after the second course received fludarabine, cytarabine, and granulocyte colony-stimulating factor. Poor responders received allogeneic stem-cell transplantation (SCT) as consolidation.ResultsSeventy-four percent of patients had good response, 17% had intermediate response, and 7% had poor response after the first course. The overall remission frequency was 97.4%, with 92% in remission after the second course. The rate of induction death was 1.3%. Patients with an intermediate response had a lower event-free survival of 35% compared with good (61%) and poor responders (82%).ConclusionThe NOPHO-AML 2004 induction strategy gives an excellent remission rate with low toxic mortality in an unselected population. Outcome is worse in patients with intermediate response but may be improved by intensifying consolidation in this group using SCT.
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8.
  • Abrahamsson, Pernilla, et al. (författare)
  • Surface microdialysis sampling : a new approach described in a liver ischaemia model
  • 2012
  • Ingår i: Clinical Physiology and Functional Imaging. - Wiley-Blackwell. - 1475-0961. ; 32:2, s. 99-105
  • Tidskriftsartikel (refereegranskat)abstract
    • We recently have shown that samples from microdialysis (MD) probes placed on the surface of the heart reflect metabolic events in the myocardium. This new interesting observation challenges us to consider whether surface application of MD applies to other parenchymatous organs and their surfaces. In 13 anesthetized pigs, transient liver ischaemia was achieved by occlusion of arterial and venous inflow to the liver. Two probes on liver surface and two in parenchyma were perfused with a flow rate of 1 mu l per min (n = 13). An identical set-up was used for probes with a flow rate of 2 mu l per min (n = 9). Samples were collected for every 15-min period during 60 min of baseline, 45 min of ischaemia and 60 min of reperfusion. Lactate, glucose, pyruvate and glycerol were analysed in MD samples. We focused on relative changes in the present study. There was a strong agreement in relative lactate and glucose levels between probes placed on liver surface and those on parenchyma. No significant differences in relative changes in lactate and glucose levels were seen between samples from surface probes and probes in liver parenchyma during equilibration, baseline, ischaemia or reperfusion with a flow rate of 1 mu l per min. MD sampling applied on the liver surface is a new application area for the MD technique and may be used to monitor liver metabolism during both physiological and pathophysiological conditions.
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9.
  • Acosta, Stefan, et al. (författare)
  • Current status on plasma biomarkers for acute mesenteric ischemia.
  • 2011
  • Ingår i: Journal of Thrombosis and Thrombolysis. - Springer. - 1573-742X.
  • Tidskriftsartikel (refereegranskat)abstract
    • Clinical diagnosis of acute mesenteric ischemia is difficult. The aim of this review is to provide current status on the search for an accurate plasma biomarker for acute mesenteric ischemia. A search using the medical subject heading terms marker and mesenteric ischemia or intestinal ischemia or superior mesenteric artery occlusion or mesenteric venous thrombosis in the Medline and Embase databases from 1980 to 2011. Studies without a control group or a control group consisted of healthy individuals (human studies), or studies on intestinal reperfusion were excluded. Twenty animal and twelve human studies were identified. In human studies, the studied series of patients had a control group that had a need of laparotomy (n = 2), suspected acute mesenteric ischemia (n = 7), acute abdomen (n = 2) or systemic inflammatory response syndrome (n = 1). D: -dimer has been found to be the most consistent highly sensitive early marker, but specificity was low. The follow-up study on α-glutathione S-transferase yielded inferior sensitivity and accuracy than the preliminary study, clearly questioning the value of this marker. Intestinal fatty acid binding globulin (I-FABP) and D: -lactate are both interesting markers, but the results were conflicting. Different cut-off levels have been used in the studies on I-FABP. The encouraging preliminary result of cobalt-albumin and urinary FABP as an accurate marker needs to be addressed in other study populations. The early clinical and laboratory diagnosis of intestinal ischemia remains a challenge. None of the proposed plasma-derived tests for acute mesenteric ischemia has as yet entered routine clinical practice. The proposed biomarkers need to be evaluated in a prospective clinical research project in patients with acute abdomen.
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10.
  • Acosta, Stefan, et al. (författare)
  • Diagnostic Pitfalls at Admission in Patients with Acute Superior Mesenteric Artery Occlusion.
  • 2012
  • Ingår i: Journal of Emergency Medicine. - Elsevier USA. - 1090-1280. ; 42:6, s. 635-641
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Acute superior mesenteric artery (SMA) occlusion leads to acute intestinal ischemia and is associated with high mortality. Early diagnosis is often missed, and confounding factors leading to diagnostic delays need to be highlighted. OBJECTIVES: To identify potential diagnostic laboratory pitfalls at admission in patients with acute SMA occlusion. METHODS: Fifty-five patients with acute SMA occlusion were identified from the in-hospital register during a 4-year period, 2005-2009. RESULTS: The median age was 76 years; 78% were women. The occlusion was embolic in 53% and thrombotic in 47% of patients. At admission, troponin I was above the clinical decision level (> 0.06 μg/L) for acute ischemic myocardial injury in 9/19 (47%) patients with embolic occlusion. Elevated pancreas amylase and normal plasma lactate were found in 12/45 and 13/27, respectively. A troponin I (TnI) above the clinical decision level was associated with a high frequency of referrals from the general surgeon to a specialist in internal medicine (p = 0.011) or a cardiologist (p = 0.024). The diagnosis was established after computed tomography angiography in 98% of the patients. The overall in-hospital mortality rate was 33%. Attempting intestinal revascularization (n = 43; p < 0.001), with a 95% frequency rate of completion control of the vascular procedure, was associated with a higher survival rate, whereas referral to the cardiologist was associated with a higher mortality rate (p = 0.018). CONCLUSION: Elevated TnI was common in acute SMA occlusion, and referral to the cardiologist was found to be associated with adverse outcome. Elevated pancreas amylase and normal plasma lactate values are also potential pitfalls at admission in patients with acute SMA occlusion.
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