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Sökning: WFRF:(Abrahamson Magnus) > Uppsala universitet

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1.
  • Leion, Felicia, et al. (författare)
  • Estimating glomerular filtration rate (GFR) in children. The average between a cystatin C- and a creatinine-based equation improves estimation of GFR in both children and adults and enables diagnosing Shrunken Pore Syndrome.
  • 2017
  • Ingår i: Scandinavian Journal of Clinical and Laboratory Investigation. - : Informa UK Limited. - 0036-5513 .- 1502-7686. ; 77:5, s. 338-344
  • Tidskriftsartikel (refereegranskat)abstract
    • Estimating glomerular filtration rate (GFR) in adults by using the average of values obtained by a cystatin C- (eGFRcystatin C) and a creatinine-based (eGFRcreatinine) equation shows at least the same diagnostic performance as GFR estimates obtained by equations using only one of these analytes or by complex equations using both analytes. Comparison of eGFRcystatin C and eGFRcreatinine plays a pivotal role in the diagnosis of Shrunken Pore Syndrome, where low eGFRcystatin C compared to eGFRcreatinine has been associated with higher mortality in adults. The present study was undertaken to elucidate if this concept can also be applied in children. Using iohexol and inulin clearance as gold standard in 702 children, we studied the diagnostic performance of 10 creatinine-based, 5 cystatin C-based and 3 combined cystatin C-creatinine eGFR equations and compared them to the result of the average of 9 pairs of a eGFRcystatin C and a eGFRcreatinine estimate. While creatinine-based GFR estimations are unsuitable in children unless calibrated in a pediatric or mixed pediatric-adult population, cystatin C-based estimations in general performed well in children. The average of a suitable creatinine-based and a cystatin C-based equation generally displayed a better diagnostic performance than estimates obtained by equations using only one of these analytes or by complex equations using both analytes. Comparing eGFRcystatin and eGFRcreatinine may help identify pediatric patients with Shrunken Pore Syndrome.
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2.
  • Malmgren, Linnea, et al. (författare)
  • The complexity of kidney disease and diagnosing it - Cystatin C, selective glomerular hypofiltration syndromes and proteome regulation.
  • 2023
  • Ingår i: Journal of Internal Medicine. - : John Wiley & Sons. - 0954-6820 .- 1365-2796. ; 293:3, s. 293-308
  • Tidskriftsartikel (refereegranskat)abstract
    • Estimation of kidney function is often part of daily clinical practice, mostly done by using the endogenous GFR-markers creatinine or cystatin C. A recommendation to use both markers in parallel in 2010 has resulted in new knowledge concerning the pathophysiology of kidney disorders by identification of a new set of kidney disorders, selective glomerular hypofiltration syndromes. These syndromes, connected to strong increases in mortality and morbidity, are characterised by a selective reduction in the glomerular filtration of 5-30 kDa molecules, such as cystatin C, compared to the filtration of small molecules < 1kDa dominating the glomerular filtrate e.g., water, urea, creatinine. At least two types of such disorders, shrunken or elongated pore syndrome, are possible according to the pore model for glomerular filtration. Selective glomerular hypofiltration syndromes are prevalent in investigated populations, and patients with these syndromes often display normal measured GFR or creatinine-based GFR-estimates. The syndromes are characterised by proteomic changes promoting the development of atherosclerosis, indicating antibodies and specific receptor-blocking substances as possible new treatment modalities. Presently, the KDIGO guidelines for diagnosing kidney disorders do not recommend cystatin C as a general marker of kidney function and will therefore not allow the identification of a considerable number of patients with selective glomerular hypofiltration syndromes. Furthermore, as cystatin C is uninfluenced by muscle mass, diet or variations in tubular secretion and cystatin C-based GFR-estimation equations do not require controversial race or sex terms, it is obvious that cystatin C should be a part of future KDIGO guidelines.
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6.
  • Abrahamson, Magnus, 1972- (författare)
  • Jesu uppståndelse som historiskt problem : En studie av Rudolf Bultmanns och Wolfhart Pannenbergs tolkningar
  • 2001
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • The main purpose of this study is to make a critical examination of Rudolf Bultmann´s (1884–1976) and Wolfhart Pannenberg´s (b. 1928) interpretations of the resurrection of Jesus. Bultmann is best known for seeking to demythologize the miracles of the New Testament. Pannenberg has gained much attention for arguing that the resurrection of Jesus is an event in chronological history. In this thesis I first present Bultmann´s and Pannenberg´s interpretations of the resurrection of Jesus. In order to help the reader understand the context in which these interpretations were made, I give a brief sketch of the German theological setting. Second, I compare the theologies of Bultmann and Pannenberg from the concept of background theory, principles of interpretation, exegetical reasoning, the meaning of the resurrection and what it means to accept the resurrection. Third, I categorize different ways that the resurrection could be interpreted today. Fourth, I critically discuss the way that Bultmann and Pannenberg argue and give some proposals for how their theologies can be developed. Developing the theology of Bultmann I give more attention to chronological history than he does. I also make alterations in the way he understands God´s action. Concerning Pannenberg I discuss the importance of rational arguments in his theology. I argue that the resurrection should be interpreted from the perspective of a faith or an interpretation which seeks understanding.
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  • Abrahamson, Magnus (författare)
  • Wolfhart Pannenberg och Jesu uppståndelse
  • 2004
  • Ingår i: Tro & Liv: Tidskrift för kristen tro och förkunnelse. ; 63:3-4, s. 13-21
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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10.
  • Otte, Jens C., et al. (författare)
  • A bioassay approach to determine the dioxin-like activity in sediment extracts from the Danube River : ethoxyresorufin-O-deethylase induction in gill filaments and liver of three-spined sticklebacks (Gasterosteus aculeatus L.)
  • 2008
  • Ingår i: Environment International. - Amsterdam : Elsevier. - 0160-4120 .- 1873-6750. ; 34:8, s. 1176-1184
  • Tidskriftsartikel (refereegranskat)abstract
    • Sediment samples from the upper Danube River in Germany have previously been characterized as ecotoxicologically hazardous and contaminants in these sediments may contribute to the observed decline of fish populations in this river section. For the investigation of sediment toxicity there is a need for development, standardization and implementation of in vivo test systems using vertebrates. Therefore, the main objective of this study was to apply and evaluate a recently established fish gill EROD assay as a biomarker in sediment toxicity assessment by using extracts of well characterised sediment samples from the upper Danube River. This to our knowledge is the first application of this novel assay to sediment extracts. Sediments from four different sites along the upper Danube River were Soxhlet-extracted with acetone and dissolved in DMSO. Three-spined sticklebacks (Gasterosteus aculeatus L.) were exposed for 48 h to various concentrations of the extracts, to the positive control β-naphthoflavone or to the solvent. Measurements of EROD activity in gill filaments and liver microsomes followed the exposure. Concentration-dependent induction of EROD in both gill and liver was found for all sediment extracts. The highest EROD-inducing potency was determined for extracts of sediments from the sites “Öpfinger See” and “Sigmaringen” and the EROD activities in gill and liver correlated well. The results from the gill and liver assays were in accordance with in vitro results of previous investigations. The EROD activities measured in the present study corresponded with the concentrations of PAHs, PCBs and PCDD/Fs in the sediment samples derived in a previous study. The sticklebacks in this study were in the reproductive phase and a stronger EROD induction was obtained in the females than in the males. Implementation of the EROD assay in testing of sediment extracts gave highly reliable results which make this assay an ecotoxicologically relevant method for assessment of contamination with Ah receptor agonists in sediments.
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