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  • 1
    ISSN: 1432-0428
    Keywords: Chinese hamster ; spontaneous diabetes ; glucosuria ; ketonuria ; glycogen ; glycogen accumulation ; retina ; Müller cell ; kidney ; distal tubule ; pancreatic islet ; a cell ; Β cell ; D cell ; electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Intracellular glycogen deposits were consistently found in the retina, kidney and pancreatic islets of diabetic-ketonuric Chinese hamsters. Accumulation of glycogen in the outer nuclear layer of the retina was mostly associated with severity of the disease, but was not related to age or sex. The type of retinal cell involved in the accumulation of glycogen was not clearly established. However, the position of the affected cell, side by side with retinal neurons, suggests that the glycogen deposits were within Müller cells. These giant glias normally synthesize and store glycogen. All ketonuric Chinese hamsters examined showed some accumulation of glycogen in distal tubules of the kidney. This abnormal glycogen was not found in glucosuric non-ketonuric or in nondiabetic Chinese hamsters. Variable amounts of glycogen were found inΒ cells of pancreatic islets of diabetic hamsters, as reported by others. However, accumulation of glycogen was also found inα and D islet cells from 2 middle aged Chinese hamsters with long term glucosuria and recent ketonuria. Abnormal glucose and glycogen metabolism seem to play an important role in the pathogenesis of diabetes in the Chinese hamster.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Rheumatology international 8 (1988), S. 113-117 
    ISSN: 1437-160X
    Keywords: Ross River virus ; Polyarthritis ; Immune complexes ; Complement ; Rheumatoid factors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Immune complexes were sought in serum and synovial fluid in Ross River virus disease (epidemic polyarthritis). Multiple samples from 15 patients showing varied degrees of disease activity over a 3 month period were analysed for their content of complement components C3 and C4, and for C1q solid-phase and Raji cell binding activity. Levels of C3 and C1q binding activity were normal. C4 and Raji cell binding activity were normal except for three high levels of Raji cell binding, of which two were accompanied by low levels of C4, with normal C3 and C1q binding. Synovial fluid showed anomalous Raji cell reactivity of uncertain significance. Conglutinin solid-phase binding activity and IgG rheumatoid factor were compared in the serum of 20 patients during active disease and after recovery. The results were identical and within the normal range in both phases. One patient developed IgM rheumatoid factor in a low titre late in his illness. Although these findings do not entirely exclude a role for immune complexes formed at the onset in the circulation or tissues, it is concluded from this and other evidence that circulating complexes are not commonly responsible for the persistence of syndroms in this disease.
    Type of Medium: Electronic Resource
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