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  • 1980-1984  (2)
  • Disease resistance  (1)
  • Endocrine cell carcinoma  (1)
  • 1
    ISSN: 1432-1335
    Keywords: Gastric endocrine cells ; Endocrine cell carcinoma ; Early gastric cancer ; Scirrhous carcinoma ; Immunohistochemistry ; Schlüsselwörter ; Gastrische Endokrinzellen ; Endokrine Carcinome ; Frühcarcinom des Magens ; Scirrhöses Carcinom ; Immunhistochemie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung 18 Argyrophilzellencarcinome aus insgesamt 101 Frühcarcinomen des Magens wurden lichtmikroskopisch, elektronenmikroskopisch sowie immunhistochemisch mit Antiseren gegen Polypeptide, CEA, Lysozyme und hCG untersucht. 7 dieser Tumoren enthielten Gastrin und 2 unter ihnen außerdem Somatostatin. In allen 18 Tumoren wurde CEA nachgewiesen, 7 von diesen 18 Tumoren zeigten Lysozyme, darunter 5 auch noch Gastrin. In 4 Tumoren wurde hCG beobachtet, und in 2 aus dieser Reihe von 4 fand sich gleichzeitig Gastrin, CEA, Mucin sowie Lysozyme. Argentaffine Zellen wurden in 7 von 18 Tumoren beobachtet. Drei von 7 Gastrin enthaltende Tumoren hatten mehr oder weniger argentaffine Zellen. Elektronmikroskopisch wurden unterschiedliche Sekretgranula beobachtet und 9 von 18 Tumoren waren D1 oder P Zellen ähnlich. Makroskopisch entsprach die Mehrzahl der Tumoren dem IIc oder IIc+III Typ. Histologisch waren von diesen 18 Tumoren 6 gut differenzierte und 12 wenig differenzierte Adenocarcinome, einschließlich Siegelring-zellencarcinomen. Sie waren öfters im Fundusbereich jüngerer Frauen lokalisiert. Unter Heranziehung unserer schon publizierten Untersuchungsbefunde wird vermutet, daß IIc-Typ Argyrophilzellencarcinome mit dem histologischen Bild des wenig differenzierten Adenocarcinoms dem scirrhösen Carcinom zugeordnet werden kann.
    Notes: Summary Eighteen argyrophil cell carcinomas in 101 early gastric carcinomas were examined histologically, ultrastructurally, and immunohistochemically for polypeptides, carcinoembryonic antigen (CEA), lysozyme, and human chorionic gonadotrophin (hCG). Seven of these 18 tumors had gastrin, and two of seven tumors also contained somatostatin. In all of these 18 tumors CEA were demonstrated. Seven had lysozyme and five of seven tumors also contained gastrin; hCG were present in four of 18 tumors and two of four tumors had gastrin, CEA, mucin, and lysozyme simultaneously. Argentaffin cells were found in seven of 18 tumors. Of the above seven tumors containing gastrin, three had argentaffin cells. Ultrastructurally, several types of secretory granules were noted and tumor cells resembling D1-or P cells were present in nine of the 18 tumors. Macroscopically, many of the tumors showed IIc or IIc+III type. Histologically, the 18 tumors consisted of six well differentiated adenocarcinomas and 12 poorly differentiated adenocarcinomas including signet-ring cell carcinoma. These 12 tumors frequently developed in the stomach of young females. In view of our previous investigations, it was suggested that the IIc-type argyrophil cell carcinoma histologically showing poorly differentiated adenocarcinoma may be related to scirrhous carcinoma of the stomach.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 66 (1983), S. 209-215 
    ISSN: 1432-2242
    Keywords: Pseudomonas syringae ; Alternaria alternata ; In vitro selection ; Disease resistance ; Heritable selected variation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Protoplast-derived calluses of tobacco (Nicotiana tabacum cv. ‘Samsun’) were selected for their resistance to toxins from Pseudomonas syringae pv. tabaci, which causes wildfire disease, and from Alternaria alternata pathotype tobacco, which causes brown spot. A number of plants were regenerated from each of the toxin-selected protoplast-derived calluses. A large percentage of the plants obtained from the second selection cycle calluses were resistant to infection by these pathogens. Resistance to wildfire disease, however, seems to be unrelated to resistance to brown spot disease. Variations in the morphological characteristics of the regenerated plants were found. Results of an assay of the R1 generation indicate that the resistance shown by R0 plants against both disease is heritable.
    Type of Medium: Electronic Resource
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