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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 56 (1978), S. 545-550 
    ISSN: 1432-1440
    Keywords: Histochemistry ; Immunohistology ; Plastic embedding ; Frozen sections ; Bone biopsy ; Bone marrow ; Histochemie ; Immunhistologie ; Kunststoffeinbettung ; Gefrierschnitte ; Myelotomie ; Knochenbiopsie ; Knochenmark
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Kombination enzymhistochemischer und immunhistologischer Verfahren mit der morphologisch überlegenen Methacrylat-Semidünnschnitt-Technik stieß bisher auf Schwierigkeiten, da durch diese Einbettungstechnik der Antigen-und Enzymnachweis weitgehend unterbunden wird. Dieser Nachteil der Kunststoffeinbettung wird durch die Möglichkeit der gleichzeitigen Anwendung der Methacrylat- und Gefrierschnitt-Technik an einer einzigen unentkalkten Biopsieprobe (Myelotomie) aus dem Beckenkamm behoben. Beide unterschiedliche Schnitt-Techniken ließen sich vereinigen mit Hilfe von zwei einfachen methodischen Neuentwicklungen: 1. Durch ein Gerät zur artefaktfreien Längshalbierung des Beckenkammzylinders 2. Durch Herstellung von gut beurteilbaren Gefierschnitten an unentkalktem spongiösem Knochen. Die Anwendung dieser Methoden wird beschrieben, ihre Vorteile bei der gleichzeitigen licht- und elektronenmikroskopischen, enzym- und immunhistologischen Auswertung werden an Beispielen gezeigt.
    Notes: Summary Unfortunately, the combination of the superior histologic embedding technique for semi-thin sectioning of undecalcified bone in methacrylate with special methods in enzyme or immune histochemistry did not prove to be very successful up to now. These shortcomings are attributed to the influence of the embedding medium itself. They can be overcome by processing one part of a biopsy specimen after embedding in methacrylate, the other one after freezing. Optimal and comparable results have been obtained by a simple instrument for longitudinal hemisectioning of a cylindrical biopsy specimen of cancellous bone of adequate size, and by developing a suitable technique for the cutting of frozen sections of undecalcified bone. These methods are presented. Examples are given of the benefits of the simultaneous evaluation of one and the same biopsy-specimen with light-microscopic, ultramicroscopic, enzyme- and immun-histochemic technique.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Skeletal radiology 8 (1982), S. 169-178 
    ISSN: 1432-2161
    Keywords: Bone biopsy ; Bone marrow ; Bone remodelling, Carcinoma ; Metastatic cancer ; Osteodysplasia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The cancellous bone of the skeleton usually shows striking alterations when metastatic carcinoma has involved the bone marrow. These changes, termed carcinomatous osteodysplasia (COD), have been analyzed in 1164 iliac crest biopsies of unselected patients with a variety of primary tumours. Semithin (3 μ) sections of undecalcified biopsies embedded in methacrylate were examined for foreign cells. Metastases were found in 462 of the 1164 biopsies and 91% of these, as well as 17% of the negative biopsies, showed some degree of COD. Osteodysplasia was more frequent in biopsies of patients with signs of systemic spread than in those without. COD includes a variable, local increase in active osteoblasts and osteoclasts, in blood vessels and in other stromal tissues. The incidence of COD was higher in the adenomatous and scirrhous metastases than in the other histological varieties. COD was subdivided into primarily osteolytic, osteosclerotic, and mixed types, and five different forms of bone resorption and formation were identified. These forms showed a characteristic association with the degree of mesenchymal activation on the one hand and the structural type of the metastases on the other, and correlated with certain cytological characteristics of the neoplastic cells. We conclude that COD is a significant consequence of the biological activities of metastatic cancer and it is readily accesible for observation by bone biopsy. The morphological classification of COD proposed in this study provides a basis for further investigation.
    Type of Medium: Electronic Resource
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