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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 385 (1979), S. 1-27 
    ISSN: 1432-2307
    Keywords: IgA-Nephropathy ; Focal glomerulonephritis ; Mesangioproliferative glomerulonephritis ; Mesangium ; Hematuria ; Immunohistology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary From 166 renal biopsies of 153 patients who showed the dominating mesangial IgA deposits of “IgA-Nephropathy”, relationships were established between immunohistologic, histologic and clinical findings with the following results: 1. The immunohistologic picture of IgA-Nephropathy exhibits a broad histologic spectrum including cases with histologically normal findings as well as mesangioproliferative Gn with focal and diffuse crescents. Most often the morphologic changes are associated with a mild and moderately severe mesangioproliferative Gn. 2. According to the extent of the morphologic lesions no discrepancy between immunohistologic and histologic findings exists. Excluding a few cases with a focal accentuation of the histologic picture the histologic lesions as well as the immunofluorescence pattern are diffuse. 3. The immunohistologic picture of IgA-Nephropathy cannot be associated with uniform and characteristic clinical and morphologic pictures. Therefore, the predominant mesangial IgA deposits of the IgA-Nephropathy-type should not be regarded as a clinical — morphologic entity but rather as a specific immunohistologic symptom with possible different underlying pathomechanisms, probably controlled by a common genetically determined aberrant immune response with in consequence various morphologic reactions of different intensity and with a relatively favorable prognosis in most cases.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 375 (1977), S. 211-223 
    ISSN: 1432-2307
    Keywords: Renal disease ; Nephrosclerosis ; Glomerulosclerosis ; Amyloid ; Immunohistology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die immunhistologische Untersuchung von 123 Nierenbiopsien nicht-glomerulonephritischer Nierenerkrankungen ergab, da\ bei FÄllen mit maligner Nephrosklerose Immunglobulinablagerungen sehr viel hÄufiger vorkommen als bei der benignen Nephrosklerose. Dabei geht die primÄre maligne Nephrosklerose vorwiegend mit glomerulÄren Immunglobulinablagerungen einher. HÄufig wird ein positiver immunhistologischer Befund, auch bei der diabetischen Glomerulosklerose beobachtet, der überwiegend innerhalb der Glomeruli, z.T. jedoch auch in der tubulÄren Basalmembran und der Bowmanschen Kapsel nachzuweisen ist. Bei der glomerulÄren Amyloidose bestehen schollig-bandartige Ablagerungen, wobei Unterschiede zwischen FÄllen mit und ohne nephrotischem Syndrom nicht erkennbar sind. Im Hinblick auf eine eventuelle Immunpathogenese der untersuchten Krankheitsbilder kann aufgrund der vorliegenden Befunde die Möglichkeit eines derartigen Mechanismus, besonders für die primÄre maligne Nephrosklerose sowie für bestimmte glomerulÄre VerÄnderungen im Rahmen eines akuten Nierenversagens und einer Transplantatabsto\ung, diskutiert werden. Für die diabetische Glomerulosklerose (von Sonderformen mit perimembranösen LÄsionen abgesehen) und die glomerulÄre Amyloidose halten wir einen derartigen Mechanismus für nicht wahrscheinlich. Differenziert man die Krankheitsbilder nach dem Typ des Ablagerungsmusters, dann finden sich bei den nicht-glomerulonephritischen Nierenerkrankungen Befunde, die denen einer Immunkomplexerkrankung entsprechen, Bilder wie bei einer Antibasalmembranerkrankung fanden wir nicht. Typische charakteristische Ablagerungsmuster für die Krankheitsbilder ergaben sich nicht, so da\ eine grö\ere diagnostische Bedeutung der Immunhistologie im Rahmen nicht-glomerulonephritischer Nierenerkrankungen nicht zukommt.
    Notes: Summary Immunohistological study of 123 kidney biopsies of non-glomerulonephritic kidney diseases showed that deposits of immunoglobulins are found more often in cases of malignant than in cases of benign nephrosclerosis. Primary malignant nephrosclerosis is mostly associated with glomerular deposits of immunoglobulins. Positive immunohistological findings are frequent in cases of diabetic glomerulosclerosis, mainly within glomeruli, but also in tubular basement membranes and Bowman's capsule. In cases of glomerular amyloidosis we see cloudy-bandlike deposits, but are unable to differentiate cases with or without the nephrotic syndrome. If we consider an immunopathogenetic mechanism for the diseases discussed in terms of the present findings, it seems possible for primary malignant nephrosclerosis as well as for certain glomerular changes associated with acute renal failure or rejection of transplants. In diabetic glomerulosclerosis (apart from special forms with perimembranous lesions) and glomerular amyloidosis, we consider such a mechanism to be unlikely. By separating the non-glomerulonephritic diseases into different types of deposits we found pictures that correspond with immunocomplex diseases. Pictures resembling anti-basement membrane diseases have not been seen. Characteristic patterns of deposits were not found, thus immunohistology is without additional diagnostic value in the field of non-glomerulonephritic disease.
    Type of Medium: Electronic Resource
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