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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 6 (1982), S. 0 
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A total of 171 gastric carcinomas comprising 69 advanced cancers and 102 early cancers were examined immunohistochemically for lysozyme. Tumour cells containing lysozyme were detected in 65 cases or 38% of the 171 gastric cancer cases. The incidence of these cells did not differ remarkably by histological type and infiltrative growth of gastric carcinoma. Of the foregoing 65 cases, two well-differentiated adenocarcinomas and three signet ring cell carcinomas had numerous lysozyme-containing tumour cells, 13 had many argentaffin or argyrophil cells, and 40 had various amounts of several types of mucin. In addition, tumour cells containing both lysozyme and mucin could be identified. No correlation could be observed between lysozyme immunoreactivity in the tumour cells and cellular infiltration of granulocytes or macrophages around the tumour. The lysozyme appeared to be produced by tumour cells. The two year survival rates indicate a tendency for advanced gastric cancers containing lysozyme to have a poor prognosis.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 252 (1974), S. 419-421 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 100 (1981), S. 1-12 
    ISSN: 1432-1335
    Keywords: Carcinoids ; Endocrine tumors ; Scirrhous carcinomas ; MNNG ; Carcinoide ; Endokrine Tumoren ; Scirrhöse Carcinome ; MNNG
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Durch orale Applikation von MNNG (N-methyl-N′-nitro-N-nitrosoguanidin) wurden Carcinoide im Drüsenmagen von Ratten erzeugt. Dreißig Wistar-Ratten wurde eine 70 μg/ml Lösung von MNNG 35 Wochen lang verabreicht, dann erhielten die Tiere 20–30 Wochen lang Leitungswasser. Bei vier von 20 weiblichen und zwei von zehn männlichen Tieren wurden Carcinoide im Drüsenmagen gefunden, Metastasen wurden nicht beobachtet. Die Tumoren waren vorwiegend im Fundusbereich entlang der großen curvatur lokalisiert. Histologisch zeigten die Carcinoide medullär-anaplastische Strukturen, die aus zwei Typen endokriner Zellen bestanden. Der erste Typ war Argentaffin und hatte elektronendichte, mäßig irreguläre Sekretgranula (437–810 nm); der zweite zeigte eine argyrophile Reaktion und hatte runde Sekretgranula mit elektronendichtem Core unter Ausbildung eines Halo (550 nm). Immunhistologische Untersuchungen (PAP-Methode) ergaben keine positiven Reaktionen am Zytoplasma der Tumorzellen gegenüber Antiseren von Gastrin, Insulin, Glucagon und Enkephalin. Einer dieser endokrinen Tumoren entwickelte sich weiter zum scirrhösen Carcinom; ein differenziertes Adenocarcinom des Drüsenmagens wurde nicht festgestellt.
    Notes: Summary A total of 30 inbred Wistar rats were orally administered 70 μg/ml solution of N-methyl-N′-nitro-N-nitrosoguanidine (MNNG) for 35 weeks and then tap water for the following 20 to 30 weeks. Four of the 20 females and two of ten males developed carcinoids in the glandular stomach, but no metastasis could be found. Carcinoids developed most frequently in the fundic portion along the greater curvature. Histologically, these tumors were medullary anaplastic carcinomas containing two different endocrine cell populations. The first cell type was argentaffin having electron-dense, somewhat pleomorphic secretory granules (437–810 nm) and the second type was argyrophil having round granules with a dense core and a pale halo (550 nm). None of these tumors showed endocrine immunoactivity for gastrin, somatostatin, insulin, glucagon, and enkephalin. One of these gastric tumors developed into scirrhous carcinoma, but differentiated adenocarcinoma could not be seen in the glandular stomach.
    Type of Medium: Electronic Resource
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