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Sökning: WFRF:(Svensson MK)

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  • Svensson, M.K, 1965, et al. (författare)
  • The risk for diabetic nephropathy is low in young adults in a 17-year follow-up from the Diabetes Incidence Study in Sweden (DISS). Older age and higher BMI at diabetes onset can be important risk factors
  • 2015
  • Ingår i: Diabetes-Metabolism Research and Reviews. - : Wiley: 12 months. - 1520-7560 .- 1520-7552. ; 31:2, s. 138-146
  • Tidskriftsartikel (refereegranskat)abstract
    • AimsThe main objective of this study was to estimate the occurrence of diabetic nephropathy in a population-based cohort of patients diagnosed with diabetes as young adults (15-34years). MethodsAll 794 patients registered 1987-1988 in the Diabetes Incidence Study in Sweden (DISS) were invited to a follow-up study 15-19years after diagnosis, and 468 (58%) participated. Analysis of islet antibodies was used to classify type of diabetes. ResultsAfter median 17years of diabetes, 15% of all patients, 14% T1DM and 25% T2DM, were diagnosed with diabetic nephropathy. Ninety-one percent had microalbuminuria and 8.6% macroalbuminuria. Older age at diagnosis (HR 1.05; 95% CI 1.01-1.10 per year) was an independent and a higher BMI at diabetes diagnosis (HR 1.04; 95% CI 1.00-1.09 per 1kg/m(2)), a near-significant predictor of development of diabetic nephropathy. Age at onset of diabetes (p=0.041), BMI (p=0.012) and HbA1c (p<0.001) were significant predictors of developing diabetic nephropathy between 9 and 17years of diabetes. At 17years of diabetes duration, a high HbA1c level (OR 1.06; 95% CI 1.03-1.08 per 1mmol/mol increase) and systolic blood pressure (OR 1.08; 95% CI 1.051.12 per 1mmHg increase) were associated with DN. ConclusionsPatients with T2DM diagnosed as young adults seem to have an increased risk to develop diabetic nephropathy compared with those with T1DM. Older age and higher BMI at diagnosis of diabetes were risk markers for development of diabetic nephropathy. In addition, poor glycaemic control but not systolic blood pressure at 9years of follow-up was a risk marker for later development of diabetic nephropathy. Copyright (c) 2014 John Wiley & Sons, Ltd.
  • Sellgren, C. M., et al. (författare)
  • GRK3 deficiency elicits brain immune activation and psychosis
  • 2021
  • Ingår i: Molecular Psychiatry. - 1359-4184 .- 1476-5578.
  • Tidskriftsartikel (refereegranskat)abstract
    • The G protein-coupled receptor kinase (GRK) family member protein GRK3 has been linked to the pathophysiology of schizophrenia and bipolar disorder. Expression, as well as protein levels, of GRK3 are reduced in post-mortem prefrontal cortex of schizophrenia subjects. Here, we investigate functional behavior and neurotransmission related to immune activation and psychosis using mice lacking functional Grk3 and utilizing a variety of methods, including behavioral, biochemical, electrophysiological, molecular, and imaging methods. Compared to wildtype controls, the Grk3(-/-) mice show a number of aberrations linked to psychosis, including elevated brain levels of IL-1 beta, increased turnover of kynurenic acid (KYNA), hyper-responsiveness to D-amphetamine, elevated spontaneous firing of midbrain dopamine neurons, and disruption in prepulse inhibition. Analyzing human genetic data, we observe a link between psychotic features in bipolar disorder, decreased GRK expression, and increased concentration of CSF KYNA. Taken together, our data suggest that Grk3(-/-) mice show face and construct validity relating to the psychosis phenotype with glial activation and would be suitable for translational studies of novel immunomodulatory agents in psychotic disorders.
  • Sharma, S., et al. (författare)
  • Human Sera Collected between 1979 and 2010 Possess Blocking-Antibody Titers to Pandemic GII.4 Noroviruses Isolated over Three Decades
  • 2017
  • Ingår i: Journal of Virology. - : AMER SOC MICROBIOLOGY. - 0022-538X .- 1098-5514. ; 91:14
  • Tidskriftsartikel (refereegranskat)abstract
    • The emergence of pandemic GII.4 norovirus (NoV) strains has been proposed to occur due to changes in receptor usage and thereby to lead to immune evasion. To address this hypothesis, we measured the ability of human sera collected between 1979 and 2010 to block glycan binding of four pandemic GII. 4 noroviruses isolated in the last 4 decades. In total, 268 sera were investigated for 50% blocking titer (BT50) values of virus-like particles (VLPs) against pig gastric mucin (PGM) using 4 VLPs that represent different GII. 4 norovirus variants identified between 1987 and 2012. Pre- and postpandemic sera (sera collected before and after isolation of the reference NoV strain) efficiently prevented binding of VLP strains MD145 (1987), Grimsby (1995), and Houston (2002), but not the Sydney (2012) strain, to PGM. No statistically significant difference in virus-blocking titers was observed between pre- and postpandemic sera. Moreover, paired sera showed that blocking titers of >= 160 were maintained over a 6-year period against MD145, Grimsby, and Houston VLPs. Significantly higher serum blocking titers (geometric mean titer [GMT], 1,704) were found among IgA-deficient individuals than among healthy blood donors (GMT, 90.9) (P < 0.0001). The observation that prepandemic sera possess robust blocking capacity for viruses identified decades later suggests a common attachment factor, at least until 2002. Our results indicate that serum IgG possesses antibody-blocking capacity and that blocking titers can be maintained for at least 6 years against 3 decades of pandemic GII. 4 NoV. IMPORTANCE Human noroviruses (NoVs) are the major cause of acute gastroenteritis worldwide. Histo-blood group antigens (HBGAs) in saliva and gut recognize NoV and are the proposed ligands that facilitate infection. Polymorphisms in HBGA genes, and in particular a nonsense mutation in FUT2 (G428A), result in resistance to global dominating GII. 4 NoV. The emergence of new pandemic GII. 4 strains occurs at intervals of several years and is proposed to be attributable to epochal evolution, including amino acid changes and immune evasion. However, it remains unclear whether exposure to a previous pandemic strain stimulates immunity to a pandemic strain identified decades later. We found that prepandemic sera possess robust virus-blocking capacity against viruses identified several decades later. We also show that serum lacking IgA antibodies is sufficient to block NoV VLP binding to HBGAs. This is essential, considering that 1 in every 600 Caucasian children is IgA deficient.
  • Wuttke, Matthias, et al. (författare)
  • A catalog of genetic loci associated with kidney function from analyses of a million individuals
  • 2019
  • Ingår i: Nature Genetics. - : NATURE PUBLISHING GROUP. - 1061-4036 .- 1546-1718. ; 51:6, s. 957-972
  • Tidskriftsartikel (refereegranskat)abstract
    • Chronic kidney disease (CKD) is responsible for a public health burden with multi-systemic complications. Through transancestry meta-analysis of genome-wide association studies of estimated glomerular filtration rate (eGFR) and independent replication (n = 1,046,070), we identified 264 associated loci (166 new). Of these,147 were likely to be relevant for kidney function on the basis of associations with the alternative kidney function marker blood urea nitrogen (n = 416,178). Pathway and enrichment analyses, including mouse models with renal phenotypes, support the kidney as the main target organ. A genetic risk score for lower eGFR was associated with clinically diagnosed CKD in 452,264 independent individuals. Colocalization analyses of associations with eGFR among 783,978 European-ancestry individuals and gene expression across 46 human tissues, including tubulo-interstitial and glomerular kidney compartments, identified 17 genes differentially expressed in kidney. Fine-mapping highlighted missense driver variants in 11 genes and kidney-specific regulatory variants. These results provide a comprehensive priority list of molecular targets for translational research.
  • Ajeganova, S., et al. (författare)
  • The association between anti-carbamylated protein (anti-CarP) antibodies and radiographic progression in early rheumatoid arthritis : A study exploring replication and the added value to ACPA and rheumatoid factor
  • 2017
  • Ingår i: Annals of the Rheumatic Diseases. - : BMJ Publishing Group. - 0003-4967 .- 1468-2060. ; 76:1, s. 112-118
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective Anti-carbamylated protein (anti-CarP) antibodies are reported to associate with more radiographic progression within the total rheumatoid arthritis (RA) population and anti-citrullinated peptide antibody (ACPA)-negative subgroup. We explored the association of anti-CarP with radiographic progression in RA and aimed to replicate the association and evaluate the added value of anti-CarP antibodies in relation to ACPA and rheumatoid factor (RF). Methods 576 Swedish and 628 Dutch patients with RA (2394 and 3247 sets of radiographs, respectively) were longitudinally studied. Replication was restricted to the Swedish patients. In both cohorts, the association of anti-CarP with radiographic progression was determined in strata of patients with similar ACPA and RF status; results of both cohorts were combined in fixed-effect meta-analyses. The net percentage of patients for whom the radiographic progression in 5 years was additionally correctly classified when adding anti-CarP to a model including ACPA and RF was evaluated. Results Anti-CarP associated with radiographic progression in the total Swedish RA population (beta=1.11 per year, p=8.75×10-13) and in the ACPAnegative subgroup (beta=1.14 per year, p=0.034). Anti- CarP associated with more radiographic progression in the strata of ACPA-positive/RF-negative, ACPA-negative/ RF-positive and ACPA-positive/RF-positive patients with RA (respective p values 0.014, 0.019 and 0.0056). A model including ACPA and RF correctly classified 54% and 57% of the patients; adding anti-CarP to this model did not increase these percentages (54% and 56% were correctly classified). Conclusions Anti-CarP antibodies associated with more severe radiographic progression in the total and ACPA-negative RA population. Anti-CarP-positivity had a statistically significant additive value to ACPA and RF, but did not improve correct classification of patients.
  • Bonkoungou, Isidore Juste O., et al. (författare)
  • Rotavirus and norovirus in children with severe diarrhea in Burkina Faso before rotavirus vaccine introduction
  • 2018
  • Ingår i: Journal of Medical Virology. - : WILEY. - 0146-6615 .- 1096-9071. ; 90:9, s. 1453-1460
  • Tidskriftsartikel (refereegranskat)abstract
    • Burkina Faso introduced rotavirus vaccine (RotaTeq) to the national immunization program in November 2013. This study describes the detection rates, clinical profiles, and molecular epidemiology of rotavirus and norovirus (NoV) infections among children amp;lt;5 years hospitalized (n=154) because of acute diarrhea in Ouagadougou, Burkina Faso, from December 2012 to November 2013, just before the start of vaccination. Overall, 44% and 23% of fecal samples were positive for rotavirus and NoV, respectively, most of them detected during the cold dry season (December-March). The predominant G/P combinations were G12P[8] (47%) and G6P[6] (30%). G2P[4] (n=3), G12P[6] (n=3), and G6P[8] (n=1) werealso detected. Nearly all (94%) successfully genotyped NoV strains belonged to genotype GII.4. The predominance of rotavirus and NoV was noteworthy in the age group 6 months, with 67% rotavirus and 22% NoV, respectively. Vomiting was significantly more common among rotavirus-infected children. To conclude, this study shows high detection rates of both rotavirus and NoV in children with severe diarrhea in Burkina Faso just before the introduction of rotavirus group A vaccination. The results can be used for estimating the impact of rotavirus group A vaccination, which started in the end of 2013. Furthermore, this study shows that the G6P[6] rotavirus strains emerging in Burkina Faso in 2010 is now established as a regionally important genotype.
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