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  • 1
    ISSN: 1432-2307
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Auftreten und Lokalisation eines aus normaler Colonmucosa mit Perchlorsäure extrahierbaren Antigens (NC) in benignen und malignen Colontumoren wurden mittels indirekter Immunfluorescenz untersucht und mit dem carcinoembryonalen Antigen (CEA) verglichen. In der normalen Dickdarmschleimhaut trat das NC intracellulär im sekretorischen Anteil der Becherzellen, extracellulär diffus im Schleim auf. Es kann somit als Schleimantigen angesehen werden. In Tumoren fand es sich unabhängig vom Differenzierungsgrad immer im intra- und extracellulären Schleim. In hochdifferenzierten Tumoren wurde es reichlich in Zellen gefunden, die normalen Becherzellen ähnelten. Diese Zellen sezernierten NC ins Lumen. Bezüglich des NC verhält sich der Schleim verschiedener Tumoren und der normalen Schleimhaut gleich. Es zeigt sich deutlich, daß die vom Differenzierungsgrad des Tumors abhängige CEA-Produktion von der Schleimproduktion und vom Auftreten des NC unabhängig ist. Entgegen früheren Befunden konnte CEA auch in Polypen und in der normalen Schleimhaut in der Umgebung von Carcinomen nachgewiesen werden, womit die Befunde von Burtin et al. (1972a) bestätigt werden.
    Notes: Summary Occurrence and localization of the carcinoembryonic antigen (CEA) and of a perchloric acid-soluble antigen of normal colonic mucosa (NC) were compared in polyps and carcinomas of the colon using the indirect immunfluorescence technique. NC is located in the secretory part of the goblet cells and diffusely distributed in the mucus. Therefore, it can be considered as a marker of large-bowel mucus. NC is found in all mucus-producing tumors regardless of their degree of differentiation in intra- and extracellular mucus deposits. Tumor cells which closely resemble normal goblet cells produce and secrete NC. With respect to their NC content, there is no immunologically detectable qualitative difference between the secretions of normal and of neoplastic large bowel mucosa. It is clearly shown that production and secretion of CEA is independent of mucus production and secretion. In contrast to earlier results, CEA was found in polyps and in normal mucosa surrounding the carcinoma, confirming the observations of Burtin et al. (1972a).
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 360 (1973), S. 339-347 
    ISSN: 1432-2307
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The localization of CEA in gastric carcinomata of different histological types was studied by indirect immunofluorescence. In well differentiated adenocarcinomata CEA was present on the surface of the tumor cells. CEA was absent in anaplastic cancers. Signet ring cells contained both CEA and mucus in their cytoplasm; this may indicate that signet ring cells are fairly well-differentiated tumor cells. In areas with intestinal metaplasia, CEA was detected on the luminal surface of the cells similar to a malignant tumor.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-2307
    Keywords: Lipid rich carcinoma ; Breast ; Immunohistochemistry ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Five cases of lipid-rich carcinomas of the breast were investigated ultrastructurally and immunohistochemically for alpha-lactalbumin (ALA), lactoferrin (Lfr) and human milk fat globule membrane antigen (HMFG-2). Staining for ALA and Lfr showed intensive reaction on nearly all of the tumour cells whereas immunoreaction for HMFG-2 revealed positivity in single cells. All tumours were negative for steroid receptor content. Ultrastructurally the tumour cells showed numerous intracytoplasmic non-membrane bound lipid droplets which were often found within autophagocytic vacuoles. Neither rough endoplasmic reticulum nor Golgi complexes showed any sign of lipid synthesis. Extrusion of lipid droplets and extracellular lipid deposition was not observed. In conclusion, our findings do not justify the consideration of lipid-rich carcinoma of the breast as a clearly defined group of tumours with specific secretory activity. Therefore, the term lipid-rich carcinoma should be used in preference to lipid-secreting, unless there is evidence of active lipid secretion.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 383 (1979), S. 69-76 
    ISSN: 1432-2307
    Keywords: Mortality statistics ; Autopsy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Due to a liberal law regarding the performance of autopsies in Austria there is a high rate of postmortems in Vienna (about 50% of all deaths). Supported by a grant from the Austrian Government the autopsy records of all hospitals in Vienna have been registered by EDV using a clear-textsystem. The autopsy records of the Institute of Forensic Medicine have been included in this study. These conditions made it possible to compare critically the official Austrian mortality statistic against the autopsyfindings. Several examples of neoplastic diseases and cardiovascular diseases with different discrepancies between the two statistics are given in this paper. The following conclusions can be drawn from this critical comparison: 1. A control and correction of official mortality statistics is possible by a centralized documentation of autopsy records and a high postmortem rate. 2. Uncontrolled mortality statistics based on monocausality due to WHO directions show severe deviations from the real situation, even in important groups of diseases. 3. The evaluation of multicausality of death gives a better registration of the actual morbidity within a population. 4. The efficiency of public health provisions, especially in the field of prevention and prenotion of diseases, can be evaluated much better by using the more detailed registration of oncologic data by postmortems. The introduction and the execution of such provisions can be controlled more accurately and sufficiently.
    Type of Medium: Electronic Resource
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