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  • 1
    Electronic Resource
    Electronic Resource
    Ultrastructural evidence of myofibroblasts in pseudomalignant myositis ossificans (1979)
    Springer
    Virchows Archiv 381 (1979), S. 189-203 
    Details
    ISSN: 1432-2307
    Keywords: Pseudomalignant ossifying myositis ; Ultrastructure ; Myofibroblasts ; Macrophages ; Pathogenesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Seven cases of pseudomalignant ossifying myositis with a typical clinical symptomatology have been reported. None of the cases had experienced an injury. All the lesions were intramuscular and all of them showed a zonal arrangement. Electron microscopy in three cases allowed the demonstration of cells showing morphological features of myofibroblasts and monocytic cells of the macrophage type. These previously unreported features together with the zonal pattern of the lesions indicate their reparative nature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01257884
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  • 2
    Electronic Resource
    Electronic Resource
    Ultrastructure of Ewing's tumour (1977)
    Springer
    Virchows Archiv 374 (1977), S. 303-316 
    Details
    ISSN: 1432-2307
    Keywords: Ewing's tumour ; Ultrastructure ; Histochemistry ; Histogenesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Tumour tissue surgically excised from 10 patients bearing Ewing's tumour of bones was examined electron microscopically and histoenzymologically. In all cases the tumour was composed of polygonal cells with cytoplasm poor in organelles but with conspicuous aggregates of glycogen particles. There were numerous intercellular connections of desmosomal type and a distinct cell membrane bound positivity for alkaline phosphatase activity. In two cases in which there was a negative reaction for alkaline phosphatase, the lack of enzyme activity might have been related to cytotoxic treatment carried out for several months immediately before excision of the tissue used for histoenzymological studies. The problem of histogenesis of Ewing's tumour remains unresolved although some of the present findings support a haemangiogenic origin of the tumour.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00432653
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  • 3
    Electronic Resource
    Electronic Resource
    Ultrastructure of adamantinoma of long bones (1981)
    Springer
    Virchows Archiv 393 (1981), S. 233-244 
    Details
    ISSN: 1432-2307
    Keywords: Adamantinoma of long bone ; Ultrastructure ; Histogenesis ; Mesodermal or mesectodermal origin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Electron microscopic examination of three adamantinomas of long bones revealed structures usually observed in both mesenchymal and epithelial tumours. Tumour cells showing high alkaline phosphatase activity frequently tended to line clefts in connective tissue, resembling endothelial cells. The long processes of such cells showed fenestration. In areas showing fibre production the tumour cells were in close relationship to collagen fibrils. The latter were found, together with microfibrils, between the processes and above the basement membranes. The tumour cells were interconnected by desmosomes with tonofilaments and contained numerous bundles of microfilaments. All three cases revealed tiny intracytoplasmic inclusions resembling Weibel-Palade endothelial bodies. In addition, some of the structures in the lumena contained definite acid mucosubstances. A squamous cell pattern was present in only one of the three specimens. The coincidence of divergent structures in a single specimen has led us to the conclusion that the so-called adamantinoma of long bone might be possibly related to tumours of mesodermal or mesectodermal origin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00431079
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  • 4
    Electronic Resource
    Electronic Resource
    Alkali-Modified Titanium Surface Stimulating Formation of Bone-Implant Interface (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 361-363 (Nov. 2007), p. 749-752 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This study was carried out to assess the bone response to alkali-modified titaniumimplant surface (Bio surface), using histomorphometric investigation on an animal model. Themean net contribution of the Bio surface to the increase in bone implant contact (BIC) withreference to the turned, machined surface was evaluated at 7.94 % (BIC/week), within the first fiveweeks of healing. The contribution was expressed as the difference in the osseointegration rates ([removed info]BIC/[removed info]'healing time) between the implants with alkali modified surface (Bio surface) and those withturned, machined surface. The surface characteristics that differed between the implant surfaces, i.e.surface morphology, specific surface area, contact angle, hydroxylation/hydration, may representfactors that influence the rate of osseointegration
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.361-363.749.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Determination of the sodium-to-calcium ratio in sections of undecalcified bone tissue by neutron activation analysis (1992)
    Springer
    Journal of radioanalytical and nuclear chemistry 165 (1992), S. 41-48 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The feasibility has been shown of instrumental determination of the Na/Ca ratio with a standard deviation of 4.7% in sections of undecalcified bone tissue made from standard biopsy or autopsy bone samples (about 0.5 mg in weight) embedded in poly (methyl methacrylate) blocks. The determination was based on short-time activation and counting the24Na and49Ca radionuclides. Blank values and detection limits of the elements were evaluated and possibilities to detect changes of the Na/Ca ratio are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02166818
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  • 6
    Electronic Resource
    Electronic Resource
    Sodium-to-calcium ratio in sections of undecalcified bone of human male individuals of different age categories as determined by INAA (1995)
    Springer
    Journal of radioanalytical and nuclear chemistry 200 (1995), S. 205-209 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The sodium-to-calcium ratios were determined by INAA in sections of human bone. The values found in three age groups of male individuals were as follows: 21–30 years: Na/Ca ratio of 0.01858, 41–50 years: Na/Ca ratio of 0.02117, 〉60 years: Na/Ca ratio of 0.002208. The differences are discussed considering former results of the authors concerning the Na−to−Ca ratio in the bone mineral.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02164082
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  • 7
    Electronic Resource
    Electronic Resource
    A comparison of sodium amounts in compact bone, red marrow and yellow marrow sections as determined by instrumental neutron activation analysis (1995)
    Springer
    Journal of radioanalytical and nuclear chemistry 201 (1995), S. 477-480 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Sodium was determined by the use of instrumental neutron activation analysis in sections of compact bone, red marrow and yellow marrow to check possible effects of shoft tissues in the bone when determining the Na/Ca ratio in sections of the undecalcified bone tissue. The results indicated that this ratio actually reflects the sodium content in the bone mineral, the contribution from the soft tissues being two orders of magnitude lower.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02162725
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