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  • Björck, M, et al. (författare)
  • Twenty years with the Swedvasc Registry.
  • 2008
  • Ingår i: European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery. - 1532-2165 .- 1078-5884. ; 35:2, s. 129-30
  • Tidskriftsartikel (övrigt vetenskapligt)
  • Sundström, Johan, Professor, 1971-, et al. (författare)
  • Risk factors for subarachnoid haemorrhage : a nationwide cohort of 950 000 adults
  • 2019
  • Ingår i: International Journal of Epidemiology. - : Oxford University Press (OUP). - 0300-5771 .- 1464-3685. ; 48:6, s. 2018-2025
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Subarachnoid haemorrhage (SAH) is a devastating disease, with high mortality rate and substantial disability among survivors. Its causes are poorly understood. We aimed to investigate risk factors for SAH using a novel nationwide cohort consortium.METHODS: We obtained individual participant data of 949 683 persons (330 334 women) between 25 and 90 years old, with no history of SAH at baseline, from 21 population-based cohorts. Outcomes were obtained from the Swedish Patient and Causes of Death Registries.RESULTS: During 13 704 959 person-years of follow-up, 2659 cases of first-ever fatal or non-fatal SAH occurred, with an age-standardized incidence rate of 9.0 [95% confidence interval (CI) (7.4-10.6)/100 000 person-years] in men and 13.8 [(11.4-16.2)/100 000 person-years] in women. The incidence rate increased exponentially with higher age. In multivariable-adjusted Poisson models, marked sex interactions for current smoking and body mass index (BMI) were observed. Current smoking conferred a rate ratio (RR) of 2.24 (95% CI 1.95-2.57) in women and 1.62 (1.47-1.79) in men. One standard deviation higher BMI was associated with an RR of 0.86 (0.81-0.92) in women and 1.02 (0.96-1.08) in men. Higher blood pressure and lower education level were also associated with higher risk of SAH.CONCLUSIONS: The risk of SAH is 45% higher in women than in men, with substantial sex differences in risk factor strengths. In particular, a markedly stronger adverse effect of smoking in women may motivate targeted public health initiatives.
  • Bergqvist, David, et al. (författare)
  • Inga dödsfall/slaganfall efter kirurgi vid asymtomatisk karotisstenos : femårsresultat redovisat i riksstäckande register
  • 2006
  • Ingår i: Läkartidningen. - 0023-7205 .- 1652-7518. ; 103:5, s. 301-302
  • Tidskriftsartikel (refereegranskat)abstract
    • In the Swedish vascular registry 7473 carotid endarterectomies are registered, in 10% the indication being a symptomatic stenosis. There are great variations in indication for carotid endarterectomy within Sweden. During the last five years the combined postoperative mortality and/or postoperative permanent stroke has varied between 3% in 1999 and 1.5% in 2003. During the same period not a single patient operated on for a symptomatic carotid stenosis experienced these complications.
  • Chen, Deliang, 1961, et al. (författare)
  • Summary of a workshop on extreme weather events in a warming world organized by the Royal Swedish Academy of Sciences
  • 2020
  • Ingår i: Tellus Series B-Chemical and Physical Meteorology. - : Taylor & Francis Group. - 1600-0889 .- 0280-6509. ; 72:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Climate change is not only about changes in means of climatic variables such as temperature, precipitation and wind, but also their extreme values which are of critical importance to human society and ecosystems. To inspire the Swedish climate research community and to promote assessments of international research on past and future changes in extreme weather events against the global climate change background, the Earth Science Class of the Royal Swedish Academy of Sciences organized a workshop entitled 'Extreme weather events in a warming world' in 2019. This article summarizes and synthesizes the key points from the presentations and discussions of the workshop on changes in floods, droughts, heat waves, as well as on tropical cyclones and extratropical storms. In addition to reviewing past achievements in these research fields and identifying research gaps with a focus on Sweden, future challenges and opportunities for the Swedish climate research community are highlighted.
  • Forsberg, Anna, et al. (författare)
  • Colonoscopy findings in high-risk individuals compared to an average-risk control population
  • 2015
  • Ingår i: Scandinavian Journal of Gastroenterology. - 0036-5521 .- 1502-7708. ; 50:7, s. 866-874
  • Tidskriftsartikel (refereegranskat)abstract
    • Background and aims: There is clear evidence of reduced morbidity and mortality from regular colonoscopy programs in patients with Lynch syndrome (LS). Today, also individuals with empirically increased risks of colorectal cancer (CRC) are offered colonoscopic surveillance. The aim was to compare the findings at the first screening colonoscopy in LS carriers, and individuals with an increased risk of bowel cancer due to family history of CRC with a control population. Methods: Altogether 1397 individuals with an increased risk for CRC were divided in four risk groups: one with LS carriers and three groups with individuals with different family history of CRC. The findings were compared between the different risk groups and a control group consisting of 745 individuals from a control population who took part in a population-based colonoscopy study. Results: In LS, 30% of the individuals had adenomas and 10% advanced adenomas. The corresponding figures in the other risk groups were 14-24% and 4-7%, compared with 10% and 3% in the control group. The relative risk of having adenomas and advanced adenomas was, compared to controls, significantly higher for all risk groups except the group with the lowest risk. Age was a strong predictor for adenomas and advanced adenomas in both risk individuals and controls. Conclusions: Individuals with a family history of CRC have a high prevalence and cumulative risk of adenomas and advanced adenomas, and screening is motivated also in this risk group.
  • Forsberg, Anna M., et al. (författare)
  • Prevalence of colonic neoplasia and advanced lesions in the normal population : a prospective population-based colonoscopy study
  • 2012
  • Ingår i: Scandinavian journal of gastroenterology. - 1502-7708. ; 47:2, s. 184-90
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective. There are few prospective studies of the prevalence of colonic neoplasia in the normal population. In order to properly evaluate screening-protocols for colorectal cancer in risk groups (e.g., older subjects or those with a family history), it is essential to know the prevalence of adenomas and cancer in the normal population. Methods. A prospective population-based colonoscopy study on 745 individuals born in Sweden aged 19-70 years was conducted (mean age 51.1 years). All polyps seen were retrieved and examined. Results. Out of the 745 individuals 27% had polyps, regardless of kind. Adenomas were found in 10% of the individuals and finding of adenomas was positively correlated to higher age. Men had adenomas in 15% and women in 6% of the cases. Women had a right-sided dominance of adenomas. Hyperplastic polyps were seen in 21% of the individuals. The presence of hyperplastic polyps was significantly positively correlated to the presence of adenomas. Advanced adenomas were seen in 2.8% of the study participants, but no cancers were detected. Conclusion. One in 10 healthy subjects had an adenoma but advanced adenomas were uncommon. Men and women have a different adenoma prevalence and localization. The results provide baseline European data for evaluating colonoscopy screening-protocols for colorectal cancer risk groups, and the findings may have implications for colon cancer screening in the normal, otherwise-healthy population.
  • Happonen, Lotta, et al. (författare)
  • A quantitative Streptococcus pyogenes-human protein-protein interaction map reveals localization of opsonizing antibodies
  • 2019
  • Ingår i: Nature Communications. - : Nature Publishing Group. - 2041-1723. ; 10:1, s. 2727-2727
  • Tidskriftsartikel (refereegranskat)abstract
    • A fundamental challenge in medical microbiology is to characterize the dynamic protein-protein interaction networks formed at the host-pathogen interface. Here, we generate a quantitative interaction map between the significant human pathogen, Streptococcus pyogenes, and proteins from human saliva and plasma obtained via complementary affinity-purification and bacterial-surface centered enrichment strategies and quantitative mass spectrometry. Perturbation of the network using immunoglobulin protease cleavage, mixtures of different concentrations of saliva and plasma, and different S. pyogenes serotypes and their isogenic mutants, reveals how changing microenvironments alter the interconnectivity of the interaction map. The importance of host immunoglobulins for the interaction with human complement proteins is demonstrated and potential protective epitopes of importance for phagocytosis of S. pyogenes cells are localized. The interaction map confirms several previously described protein-protein interactions; however, it also reveals a multitude of additional interactions, with possible implications for host-pathogen interactions involving other bacterial species.
  • Lorant, Tomas, et al. (författare)
  • Safety, immunogenicity, pharmacokinetics, and efficacy of degradation of anti-HLA antibodies by IdeS (imlifidase) in chronic kidney disease patients
  • 2018
  • Ingår i: American Journal of Transplantation. - : Wiley-Blackwell. - 1600-6135 .- 1600-6143. ; 18:11, s. 2752-2762
  • Tidskriftsartikel (refereegranskat)abstract
    • Safety, immunogenicity, pharmacokinetics, and efficacy of the IgG-degrading enzyme of Streptococcus pyogenes (IdeS [imlifidase]) were assessed in a single-center, open-label ascending-dose study in highly sensitized patients with chronic kidney disease. Eight patients with cytotoxic PRAs (median cytotoxic PRAs of 64%) at enrollment received 1 or 2 intravenous infusions of IdeS on consecutive days (0.12 mg/kg body weight ×2 [n = 3]; 0.25 mg/kg ×1 [n = 3], or 0.25 mg/kg ×2 [n = 2]). IgG degradation was observed in all subjects after IdeS treatment, with <1% plasma IgG remaining within 48 hours and remaining low up to 7 days. Mean fluorescence intensity values of HLA class I and II reactivity were substantially reduced in all patients, and C1q binding to anti-HLA was abolished. IdeS also cleaved the IgG-type B cell receptor on CD19+ memory B cells. Anti-IdeS antibodies developed 1 week after treatment, peaking at 2 weeks. A few hours after the second IdeS infusion, 1 patient received a deceased donor kidney offer. At enrollment, the patient had a positive serum crossmatch (HLA-B7), detected by complement-dependent cytotoxicity, flow cytometry, and multiplex bead assays. After IdeS infusion (0.12 mg/kg ×2) and when the HLA-incompatible donor (HLA-B7+) kidney was offered, the HLA antibody profile was negative. The kidney was transplanted successfully.
  • Malmström, Johan, et al. (författare)
  • Streptococcus pyogenes in human plasma: adaptive mechanisms analyzed by mass spectrometry based proteomics.
  • 2012
  • Ingår i: Journal of Biological Chemistry. - : ASBMB. - 1083-351X. ; 287:2, s. 1415-1425
  • Tidskriftsartikel (refereegranskat)abstract
    • Streptococcus pyogenes is a major bacterial pathogen and a potent inducer of inflammation causing plasma leakage at the site of infection. A combination of label free quantitative mass spectrometry-based proteomics strategies were used to measure how the intracellular proteome homeostasis of S. pyogenes is influenced by the presence of human plasma, identifying and quantifying 842 proteins. In plasma the bacterium modifies its production of 213 proteins, and the most pronounced change was the complete down-regulation of proteins required for fatty acid biosynthesis (FAB). Fatty acids are transported by albumin (HSA) in plasma. S. pyogenes expresses HSA-binding surface proteins, and HSA carrying fatty acids reduced the amount of FAB proteins to the same extent as plasma. The results clarify the function of HSA-binding proteins in S. pyogenes and underline the power of the quantitative mass spectrometry strategy used here to investigate bacterial adaptation to a given environment.
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