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  • 1985-1989  (4)
  • 1965-1969  (7)
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral pathology & medicine 15 (1986), S. 0 
    ISSN: 1600-0714
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The periodontal membrane of European hamster maxillary incisors showed histologic changes consisting of an irregularly orientated, less vascularized connective tissue which included abundant cementicle-like structures. The changes were multilocal and bilateral, growing towards the alveolar bone (Grade 1), causing atrophy of the alveolar bone due to compression (Grade 2) and reaching the periosteal membranes (Grade 3). In a few animals, the lesions were seen after one year. They were seen in 80% of hamsters more than 2 years old. Carcinogenic exposure did not alter the latency and incidence of the alterations. The lesions were thought to be a spontaneously occurring disease representing a nodular cemento-fibrous dysplasia of the periodontium. As, morphologically, no exact attribution to other odontogenic or mesenchymal growth could be made, the entity of this periodontal lesion was considered. Although the changes observed in the periodontal membrane of the maxillary incisors of the European hamster were not exactly comparable to odontogenic cemental lesions in man, they may serve as a model to further clarify the nature of fibro-osseous lesions.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 52 (1965), S. 500-500 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 52 (1965), S. 188-189 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] TISSUE-SPECIFIC anti-mitotic substances, now known as chalones1, have been extracted from a number of tissues, and especially well known are the epidermal and granule -cytic chalones2'3. Although it is tissue-specific the epidermal chalone is not species-specific4. The various chalones evidently ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 109 (1985), S. 183-187 
    ISSN: 1432-1335
    Keywords: N-nitroso-2,6-dimethylmorpholine (NDMM) ; Carcinogenicity in European hamsters
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of N-nitroso-2,6-dimethylmorpholine (NDMM), a pancreatic carcinogen for the Syrian golden hamster, was examined in the European hamster (EH) for comparative reasons. The compound was administered by subcutaneous (SC) injection or intragastric gavage (IG) at a dose level corresponding to 0.1 of LD50. In terms of carcinogenicity the main target was the respiratory epithelium (nasal cavity, lung, trachea, larynx); other benign and malignant tumors originated in the liver (bile duct epithelium and endothelium) and renal pelvis (transitional epithelium). The occurrence of neoplasms seen at other sites was difficult to attribute to treatment. Reduced metabolism as found during hibernation did not change the organ distribution of neoplastic growths. Differences in the carcinogenic potency (tumor incidence and latency, affected organs and cell types) did not depend significantly on the route of administration. The data were compared to those obtained using other nitroso compounds in this species.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Skeletal radiology 14 (1985), S. 216-225 
    ISSN: 1432-2161
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The extra-embryonic albuminous capsule fluid of the marine prosobranch Nucella lapillus L., collected from March to May 1988 in Brittany, France, has been investigated by sodium dodecylsulfate-polyacrylamide-gelelectrophoresis (SDS-PAGE) and biochemical assays. The fluid at the gastrula- and early veliger stage of the snail embryo was analysed for proteins on SDS-gels, i.e., for acid phosphatase, alkaline phosphatase, β-glucuronidase and arylsulfatase activities. The protein and inorganic phosphorous contents were also determined. Electrophoresis revealed the presence of different proteins and a variation in the band pattern during early developmental stages. The total protein content of the capsule fluid decreases significantly from gastrula to early veliger stage. In the differentiated developmental stage the acid phosphatase activity was higher than the poorly differentiated gastrula stage. The detected activity of arylsulfatase indicates that acid mucopolysaccharides are present. In general, observed changes in the organic components of the intracapsular fluid of N. lapillus substantiate the nutritive value for developing embryos.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 66 (1965), S. 536-540 
    ISSN: 1432-1335
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Pregnant gold hamsters received di-ethylnitrosamine (NÄNA) subcutaneously (2–14 mg; daily dose 2 mg) in the second half of gestation. Twenty-five weeks after birth of the litter multiple tracheal papillomata were found in 42% of the young. In addition, a diffuse squamous epithelial cell metaplasia was disclosed in the region of the tracheobronchial tree. A hepatotoxic effect (cirrhosis) was observed 25 weeks after birth in 68% of the young. DÄNA, therefore, crossed the placenta in the fetuses.
    Notes: Zusammenfassung Trächtige Goldhamster erhielten in der 2. Hälfte der Tragzeit Diäthylnitrosamin (DÄNA) (2–14 mg, Tagesdosis 2 mg) subcutan verabreicht. 25 Wochen nach dem Wurf fanden sich bei 42% der Jungen zum Teil multiple Trachealpapillome. Darüber hinaus zeigte sich eine diffuse Plattenepithelmetaplasie im Bereich des Tracheobronchialbaumes. Eine leberschädigende Wirkung (Cirrhose) wurde 25 Wochen nach dem Wurf bei 68% der Tiere beobachtet. DÄNA gelangt also durch die Placenta an den Fetus.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 68 (1966), S. 321-325 
    ISSN: 1432-1335
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Adult golden hamsters were treated with Trenimon, Bayer E 39 or Sanamycin 18–20 days after transplantation of KG-13-plasmocytoma. Cytostatic treatment had no effect on survival time. Treatment with Bayer E 39 or Sanamycin showed involution of tumors and normalisation of blood proteins. Trenimon treatment had no effect on tumor growth and blood proteins; there was no difference between the Trenimon-group and untreated controls.
    Notes: Zusammenfassung 18–20 Tage nach Transplantation des KG-13-Plasmocytoms auf ausgewachsene Goldhamster wurden diese mit Trenimon, Bayer E 39 oder Sanamycin behandelt. Die Prüfung der Überlebenszeit erbrachte keinen signifikanten Unterschied zwischen Kontrolltieren und behandelten Versuchstieren. Nach Behandlung mit Bayer E 39 und Sanamycin erfolgt neben der Rückbildung der Tumoren die Normalisierung der Bluteiweißwerte. Die Behandlung mit Trenimon hat keinen Einfluß auf das Tumorwachstum und Bluteiweißbild. Solche Tiere zeigen das gleiche Verhalten wie tumortragende, unbehandelte Kontrollen.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 67 (1965), S. 152-155 
    ISSN: 1432-1335
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Pregnant NMRI mice received DENA subcutaneously in doses of 80–240 mg/kg body weight. Their young were examined 8 to 12 months after birth, and these showed a significant increase in the occurrence of multiple pulmonary adenomas (after 8 months from 5–34%, after 12 months from 10–63%). The transplacental passage of the DENA apparently accelerated the latent potentiality for the formation of pulmonary adenomas. In these young born of mothers treated with DENA during pregnancy there were five benign hepatomas and one malignant hepatic cell tumor.
    Notes: Zusammenfassung Trächtige NMRI-Mäuse erhielten DÄNA (80,0–240,0 mg/kg Körpergewicht) subcutan. Ihre Jungen wurden 8 bzw. 12 Monate nach dem Wurf untersucht. Die Jungen von während der Tragzeit mit DÄNA behandelten Muttertieren zeigten einen signifikanten Anstieg im Auftreten multipler Lungenadenome (nach 8 Monaten 34% zu 5%; nach 12 Monaten 63% zu 10%). Durch die Behandlung von trächtigen Muttertieren mit DÄNA wird nach diaplacentarem Übertritt die offenbar latent vorhandene Bereitschaft zur Bildung von Lungenadenomen beschleunigt. Bei den Jungen, von während der Tragzeit mit DÄNA behandelten Muttertieren, wurden insgesamt fünf gutartige Hepatome und ein maligner Leberzelltumor gefunden.
    Type of Medium: Electronic Resource
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