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  • 1
    ISSN: 1432-1440
    Keywords: Akute Virushepatitis ; „Hippie“-Hepatitis ; Chronisch persistierende Hepatitis ; Chronisch aggressive Hepatitis ; Hepatitis unter Immunsuppression ; Hepatitis B Antigen-Carrierstatus ; Immunfluorescenz-Methode zur anti-HBcAg-Bestimmung ; Acute viral hepatitis ; “Hippie” hepatitis ; Chronic persistent hepatitis ; Chronic aggressive hepatitis ; Hepatitis under immunosuppression ; Hepatitis B antigen carrier state ; Immunofluorescence method for anti-HBcAg determination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The occurrence of anti-HBcAg antibodies in the blood as determined by indirect immunofluorescence and its relation to the occurrence of HBsAg in the cytoplasm and of HBcAg and IgG in the nuclei of hepatocytes were studied in the following groups of patients (total of 123 biopsies): I. 64 HBAg-negative patients with various liver diseases; II. 51 HBAg-positive patients without therapeutical immunosuppression (6 acute hepatitis, 10 nonspecific reactive and 10 chronic persistent hepatitis, 19 chronic aggressive hepatitis, 6 „Hippie“-hepatitis); III. 8 kidney transplant recipients. It could be shown that nuclear IgG is found only if both parameters can be demonstrated at the same time: HBcAg in liver cell nuclei and anti-HBcAg antibodies in the serum in titers higher than 1:64. Accordingly, all types of hepatitis with excess formation of nuclear HBcAg (early phase of acute hepatitis, chronic aggressive hepatitis and chronic non-aggressive forms with generalized core formation, i.e. carrier state or chronic persistent hepatitis of the HBc type) may show nuclear fluorescence for IgG. All forms of hepatitis B without detectable core formation (acute hepatitis in the elimination phase, chronic nonaggressive hepatitis with isolated HBsAg expression, i.e. carrier state or chronic persistent hepatitis of the HBs type, posthepatitic phase) do not present nuclear IgG despite eventual anti-HBcAg formation. Finally, lack of anti-HBcAg or very low titers associated with lack of IgG in hepatocytic nuclei do not exclude generalized core formation in liver cell nuclei in chronic persistent hepatitis of effectively immunosuppressed patients. Although the demonstration of nuclear IgG has several diagnostic and prognostic consequences in common with the demonstration of HBcAg, a specific search for the core antigen in the tissue is needed for the correct appraisal of the HBcAg- and HBsAg tissue expression pattern and the associated disease.
    Notes: Zusammenfassung Mit der indirekten Immunfluorescenz-Methode wurden anti-HBcAg-Antikörper im Blut bestimmt und ihr Vorkommen in Beziehung gesetzt zum Nachweis von HBsAg im Zytoplasma und HBcAg sowie IgG im Zellkern in Leberbiopsien von insgesamt 123 Probanden. Das Untersuchungskollektiv umfaßte 64 HBAg-seronegative Patienten mit unterschiedlichen Leberkrankheiten, 51 HBAg-seropositive Patientenohne therapeutische Immunsuppression (darunter histologisch 6 akute Hepatitis, 10 unspezifisch reaktive Hepatitis, 10 chronisch persistierende Hepatitis, 19 chronisch aggressive Hepatitis und 6 „Hippie“-Hepatitis) sowie 8 sero-positive immunsupprimierte Nierentransplantat-Empfänger. IgG war immer dann darstellbar, wenn gleichzeitig die Leberzellkerne positiv ausfielen für HBcAg und anti-HBcAg-Titer im Blut den Titerwert von 1:64 überstiegen. So ließen alle Hepatitisformen mit ausgeprägter nukleärer Core-Bildung, wie Frühphase der akuten Hepatitis, chronisch aggressive Hepatitis und nicht-aggressive Formen mit generalisierter HBcAg-Expression (z.B. chronisch persistierende Hepatitis oder Trägerstatus vom HBc-Typ) nukleäres IgG erkennen. Alle Varianten der Hepatitis Bohne faßbares HBcAg im Gewebe (akute Hepatitis in der Eliminationsphase oder posthepatitisch, chronisch persistierende Hepatitis und Trägerstatus vom HBs-Typ) hingegen waren negativ auf nukleäres IgG und zwar auch in Fällen mit nachweisbaren anti-HBc-Antikörpern im Blut. Bei effektivimmunsupprimierten Patienten mit chronisch persistierender Hepatitis schließlich war IgG im Gewebe negativ und die Bluttiter für anti-HBc waren negativ oder sehr niedrig, so daß in diesen Fällen eine generalisierte nukleäre Core-Expression nicht erfaßt werden konnte. Wenn auch dem Nachweis von IgG im Lebergewebe eine gewisse diagnostische und prognostische Bedeutung zuzusprechen ist, ist doch der spezifische Nachweis von HBcAg im Gewebe in der Ermittlung des HBc- und HBs-Ag-Expressionsmusters im Gewebe und damit in der korrekten Einstufung einer Hepatitis B-Virusinfektion überlegen.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1440
    Keywords: Whipple's disease ; Chronic interstitial nephritis ; Granulomas ; Boeck's disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Report is given on a 68-year-old man who suffered primarily from progressive weight loss and repeated episodes of fever and arthralgia. Later, liver dysfunction and renal insufficiency developed. Liver and kidney biopsics disclosed granulomatous hepatitis and nephritis. Because of the morphologic and clinical findings, the diagnosis of Boeck's disease was made. Shortly before death, diarrhea developed. Autopsy revealed a massive systemic involvement in Whipple's disease proven by light and electron microscopy and immunofluorescence. Tuberculoid and epitheloid cell granulomas and isolated giant cells were found in addition to the biopsy findings in skeleton muscles, the small intestine, lymphnodes and bronchi. At autopsy, the kidney showed chronic interstitial nephritis. The literature of kidney involvement in Whipple's disease is reviewed. This is the first case with granulomatous interstitial nephritis and chronic renal insufficiency in an inadequately treated Whipple's disease.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Medical microbiology and immunology 172 (1983), S. 75-86 
    ISSN: 1432-1831
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A virus derived from cells of a lymphoblastoid line originating from the lymph node of a healthy African green monkey was characterized as a typical member of the foamy virus subgroup of retroviridae by its morphological, physicochemical, biological and biochemical properties (reverse transcriptase actvity). Besides the usual host range of foamy viruses, the isolated strain revealed a remarkable T-lymphotropism, distinguishing it from the prototypes of foamy viruses previously isolated from African green monkeys. Two foamy virus infections are demonstrated in human contacts of the African green monkey colony, with the animal harbouring the isolate.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Cancer Genetics and Cytogenetics 66 (1993), S. 153 
    ISSN: 0165-4608
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 388 (1980), S. 155-165 
    ISSN: 1432-2307
    Keywords: Schönlein-Henoch's disease ; Glomerulonephritis ; Glomerular basement membrane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In glomerulonephritis accompanying the Schönlein-Henoch syndrome (SHS) a characteristic subepithelial basement membrane change is present in 85% of cases. The subepithelial change is a reaction to subepithelial deposits and consists of a garland or dome-like new formation of thin densa lamellae. This change is much more frequent in SHS than in IgA-nephritis or idiopathic glomerulonephritis or any other systemic disease. Furthermore, subepithelial deposits (50% of cases) are nearly as frequent as subendothelial deposits (65%) and more often present than formerly assumed.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-2307
    Keywords: Cytokeratin ; Intermediate Filament Proteins ; Conformation-dependent epitopes ; Immunocytochemistry ; Tumor diagnosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The epitope recognized by the murine monoclonal antibody (mAB lu-5) recently described as a formaldehyde-resistant, “pan-epithelial marker” of great value in tumour diagnosis is located on the surface of cytokeratin filaments. It has been preserved during vertebrate evolution from amphibia to man. As this epitope is not reactive after SDS-polyacrylamide gel electrophoresis (SDS-PAGE), the epitope-bearing protein has been identified by a dot-blot antibody binding assay, using purified proteins in which the epitope is reconstituted. We show that the epitope is present in most cytokeratin polypeptides of both the acidic (type I) and basic (type II) subfamily but does not occur in other cytoskeletal proteins. The location of this widespread epitope is discussed with respect to homologies of amino acid sequences of cytokeratins and their conformations.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-2307
    Keywords: Bladder neoplasm ; p53 ; erbB-2 ; Metastasis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Overexpression of p53 anderbB-2 was studied by immunohistochemistry in formalin-fixed tissue samples of 179 patients with transitional cell carcinoma of the urinary bladder. p53 immunostaining was strongly correlated with tumour stage (P〈0.0001). This was driven by a marked difference in p53 expression between pTa (37% positive) and pT1 (71%) tumours, while there was no difference between pT1 and pT2-4 tumours. Similarly, a strong overall association between p53 expression and grade (P〈0.0001) was driven by a marked difference between grade 1 (28%) and grade 2 tumours (71%), and there was no significant difference between grade 2 and grade 3 tumours. Surprisingly, the frequency oferbB-2 overexpression was higher in pT1 tumours (74%) than in either pTa (49%;P=0.0265) or pT2-T4 (56%;P=0.0645) tumours. Both p53 anderbB-2 expression was also associated with metastasis. Metastases were found in 77% of patients with p53 positive primary tumours, but in only 50% of the patients with p53 negative primary tumours (P=0.022). Metastases were found in 66% of patients witherbB-2 positive primaries, but in only 37% of theerbB-2 negative primaries (P=0.020). Of 32 patients with positivity for both p53 anderbB-2, 84% developed metastases, as compared to 49% of patients with positivity for either one or neither positive (P=0.002). We conclude that both p53 anderbB-2 over-expression are associated with early invasion in bladder cancer. Furthermore, p53 anderbB-2 may be important predictors for metastasis.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-2307
    Keywords: Kidney ; Thromboxane ; Thromboxane synthase ; Tü 300 monoclonal antibody
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Thromboxane, excreted in the urine in increased amounts in glomerular, vascular and tubulo-interstitial diseases, is considered to originate from the kidney. The localization of thromboxane synthase, a key enzyme of arachidonic acid metabolism, was studied in the human kidney by immunohistology using the monoclonal antibody Tü 300. In the interstitial tissue dendritic reticulum cells surrounding the tubules expressed high concentrations of the enzyme. In glomeruli the enzyme was weakly expressed in podocytes. This was confirmed by co-localization with an antiserum directed to podocalyxin, a marker of the visceral epithelial cells. In the study of various kidney diseases, massive accumulation of thromboxane synthase containing cells was observed in interstitial diseases, whereas in glomerular diseases there were no differences from normal kidney; in a case of thrombotic microangiopathy podocytes exhibited an increase in thromboxane-synthase. The thromboxane-synthase positive infiltrating interstitial cells were shown by conventional light microscopy to be mononuclear phagocytic cells. The physiological sources of renal thromboxane are dendritic reticular cells and podocytes. In interstitial renal disease infiltrating cells of the monocyte/macrophage system constitute the major site of thromboxane synthesis. In glomerular disease, a characteristic alteration of thromboxane-synthase was not found.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-2307
    Keywords: Monoclonal pan-epithelial antibody ; Immunohistochemistry ; Tumour diagnosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A mouse monoclonal antibody (mAB lu-5) was prepared using a lung cancer cell line as an antigen. The selected clone produces an IgG with a gamma-1 heavy chain and a kappa-light-chain. Immunohistochemical testing of mAB lu-5 on 117 normal tissue biopsies and 474 tumours revealed reactivity with an intracytoplasmic, formaldehyderesistant antigen present in most epithelial and mesothelial cells, but absent in mesenchymal cells. The antibody can therefore be used as a first order, pan-epithelial marker. It proved also useful for fast tumour diagnosis on frozen sections.
    Type of Medium: Electronic Resource
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