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Träfflista för sökning "WFRF:(Kerstin Sundberg) "

Sökning: WFRF:(Kerstin Sundberg)

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  • Ahlgren, Kerstin. M, et al. (författare)
  • Diabetes mellitus in dog - : No evidence for a type-1-like phenotype
  • ????
  • Annan publikation (övrigt vetenskapligt)abstract
    • Aims/hypothesisDiabetes mellitus (DM) is one of the most common endocrine disorders in dogs, and is commonly proposed to be of autoimmune origin. Although the clinical symptoms of human type 1 diabetes (T1D) and canine DM are similar, the aetiologies may differ. The aim of this study was to investigate if autoimmune aetiology resembling human T1D is as prevalent in dogs as previously reported.Methods Sera from 121 diabetic dogs representing 38 different breeds were tested for islet cell antibodies (ICA) and GAD65 autoantibodies (GADA) and compared with sera from 133 healthy dogs from 40 breeds. ICA was detected by indirect immunofluorescence using both canine and human frozen sections. GADA was detected by in vitro transcription and translation (ITT) of human and canine GAD65, followed by immunoprecipitation.ResultsNone of the canine sera analyzed tested positive for ICA on sections of frozen canine or human ICA pancreas. However, serum from one diabetic dog was weakly positive in the canine GADA assay and serum from one healthy dog was weakly positive in the human GADA assay.Conclusions/interpretationsBased on sera from 121 diabetic dogs from 38 different breeds were tested for humoral autoreactivity using four different assays, contrary to previous observations, we find no support for an autoimmune aetiology  in canine diabetes.
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  • Ahlgren, Kerstin M, et al. (författare)
  • Lack of evidence for a role of islet autoimmunity in the aetiology of canine diabetes mellitus
  • 2014
  • Ingår i: PLoS ONE. - 1932-6203. ; 9:8, s. e105473
  • Tidskriftsartikel (refereegranskat)abstract
    • AIMS/HYPOTHESIS:Diabetes mellitus is one of the most common endocrine disorders in dogs and is commonly proposed to be of autoimmune origin. Although the clinical presentation of human type 1 diabetes (T1D) and canine diabetes are similar, the aetiologies may differ. The aim of this study was to investigate if autoimmune aetiology resembling human T1D is as prevalent in dogs as previously reported.METHODS:Sera from 121 diabetic dogs representing 40 different breeds were tested for islet cell antibodies (ICA) and GAD65 autoantibodies (GADA) and compared with sera from 133 healthy dogs. ICA was detected by indirect immunofluorescence using both canine and human frozen sections. GADA was detected by in vitro transcription and translation (ITT) of human and canine GAD65, followed by immune precipitation. Sections of pancreata from five diabetic dogs and two control dogs were examined histopathologically including immunostaining for insulin, glucagon, somatostatin and pancreas polypeptide.RESULTS:None of the canine sera analysed tested positive for ICA on sections of frozen canine or human ICA pancreas. However, serum from one diabetic dog was weakly positive in the canine GADA assay and serum from one healthy dog was weakly positive in the human GADA assay. Histopathology showed marked degenerative changes in endocrine islets, including vacuolisation and variable loss of immune-staining for insulin. No sign of inflammation was noted.CONCLUSIONS/INTERPRETATIONS:Contrary to previous observations, based on results from tests for humoral autoreactivity towards islet proteins using four different assays, and histopathological examinations, we do not find any support for an islet autoimmune aetiology in canine diabetes mellitus.
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  • Ahlgren, Kerstin, M., et al. (författare)
  • Type I Interferon signature in Nova Scotia duck tolling retriever dogs with steroid responsive meningitis-arteritis
  • ????
  • Annan publikation (övrigt vetenskapligt)abstract
    • Objective: Dogs of the breed Nova Scotia duck tolling retriever (NSDTR) are prone to develop a disease complex in some aspects resembling human systemic lupus erythematosus (SLE). Peripheral blood mononuclear cells (PBMCs) from human SLE patients have an increased mRNA expression type I interferon (IFN) regulated genes. However, it is unknown whether diseased dogs also display the typical type I IFN signature.Methods: To test canine sera for their capacity to induce type I IFN response Mardin-Darby canine kidney (MDCK) cells were cultured with sera from healthy dogs (n=25),  immune-mediated rheumatic disease (IMRD) dogs with anti-nuclear antibodies (ANA+) (n=30) or dogs with steroid responsive meningitis-arteritis (SRMA) (n=25). mRNA expression of the genes MX1, IFIT1 and CXCL10 was measured by quantitative Real Time PCR.Results: A highly significant (p=0.0009) increase in mRNA expression of the type I IFN responsive gene MX1 was detected in cells stimulated by sera from dogs with SRMA, but not from IMRD ANA+ dogs. Expression of IFIT1 was twice as high in cells stimulated by sera from dogs with SRMA compared to both healthy dogs and ANA+ dogs. The mean expression of CXCL10 was nearly ten times higher in cells stimulated by sera from SRMA dogs than by ANA+ dogs and four times higher compared to cells stimulated by control dogs.Conclusion: Presence of type I IFN in sera from diseased NSDTR dogs was found in this study. This implies that this canine model can be used for identification of pathways of importance for autoimmune disorders in humans and for testing of novel therapeutic approaches. Our results can also be a step on the way towards personalized drugs in these dogs.
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  • Frankowiack, Marcel, et al. (författare)
  • The dog as a genetic model for immunoglobulin A (IgA) deficiency : Identification of several breeds with low serum IgA concentrations
  • 2014
  • Ingår i: Veterinary Immunology and Immunopathology. - 0165-2427. ; 60:3-4, s. 255-259
  • Tidskriftsartikel (refereegranskat)abstract
    • Immunoglobulin A (IgA) serves as the basis of the secretory immune system by protecting the lining of mucosal sites from pathogens. In both humans and dogs, IgA deficiency (IgAD) is associated with recurrent infections of mucosal sites and immune-mediated diseases. Low concentrations of serum IgA have previously been reported to occur in a number of dog breeds but no generally accepted cut-off value has been established for canine IgAD. The current study represents the largest screening to date of IgA in dogs in terms of both number of dogs (n = 1267) and number of breeds studied (n = 22). Serum IgA concentrations were quantified by using capture ELISA and were found to vary widely between breeds. We also found IgA to be positively correlated with age (p < 0.0001). Apart from the two breeds previously reported as predisposed to low IgA (Shar-Pei and German shepherd), we identified six additional breeds in which > 10% of all tested dogs had very low (<0.07 g/l) IgA concentrations (Hovawart, Norwegian elkhound, Nova Scotia duck tolling retriever, Bullterrier, Golden retriever and Labrador retriever). In addition, we discovered low IgA concentrations to be significantly associated with canine atopic dermatitis (CAD, p < 0.0001) and pancreatic acinar atrophy (PAA, p = 0.04) in German shepherds.
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  • Cabak Rédei, Anna, et al. (författare)
  • József Eötvös and the age of Hungarian reform
  • 2004
  • Ingår i: Modernisation and tradition. European local and manorial societies 1500-1900.. - Nordic academic press.
  • Bokkapitel (övrigt vetenskapligt)abstract
    • The question at stake is to what extent could the Hungarian intelligentsia, here foremost represented by the author and political thinker József Eötvös, in the beginning of the 19th century, take in the ideas of the Enlightment and its notion of equality. By studying Eötvös' highly political novel "Village Notary" some conclusions are made regarding how Rousseau's political philosophy was understood in the Hungarian cultural and social context.
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