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  • 1
    ISSN: 1432-1173
    Keywords: Schlüsselwörter Morbus Grosshans-Marot ; Blaschkitis ; Lichen striatus ; Antinukleäre Antikörper ; Kutanes Mosaik ; Keywords Grosshand-Marot disease ; Blaschkitis ; Lichen striatus ; Antinuclear antibodies ; Cutaneous mosaicism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract E. Grosshans and L. Marot first described blaschkitis in 1990 as a linear inflammatory dermatitis following lines of Blaschko in an adult patient. We report another case which occurred in a 38-year-old woman who developed an extensive, linear, erythematosquamous dermatitis involving the face, all limbs and the trunk. The patient's serum tested positive for antinuclear antibodies at a dilution of 1:640. The lesions regressed spontaneously within 4 weeks. Blaschkitis is a distinct entity which corresponds neither to a known inflammatory dermatitis in the lines of Blaschko nor to an hamartoma nor to an X-linked disease. Cutaneous antigenic mosaicism, the expression of which might be induced by a viral infection, could trigger this localized inflammatory T-cell response. This hypothesis relates blaschkitis to other cutaneous autoimmune diseases, as does the presence of antinuclear antibodies. We therefore suggest renaming this type of inflammatory dermatitis Grosshans-Marot disease in honour to the dermatologists who first described the entity.
    Notes: Zusammenfassung Die “Blaschkitis”, eine blaschkolineäre Dermatitis im Erwachsenenalter, wurde von E. Grosshans und L. Marot 1990 erstmals als Entität beschrieben. Wir berichten von einem weiteren Fall einer “Blaschkitis” bei einer 38-jährigen Patientin ohne Vorerkrankungen, die an Kopf, Hals, Armen, Beinen und extremitätennahen Rumpfbereichen blaschkolineäre erythematosquamöse Läsionen entwickelte. Es fanden sich antinukleäre Antikörper mit einem Titer von 1:640. Spontane Abheilung trat innerhalb von 4 Wochen ein. Bei der “Blaschkitis” handelt es sich weder um eine blaschkolineäre Variante einer bekannten Dermatose noch um eine hamartomatöse Fehlbildung noch um einen X-chromosomal-dominanten Gendefekt. Ein Mosaik kutaner Antigene mit Expression im Laufe des Lebens (z. B. virusinduziert) könnte zu dieser blaschkolineären T-lymphozytären Entzündungsreaktion führen. Diese Theorie rückt die blaschkolineäre Dermatitis im Erwachsenenalter in die Nähe der Autoimmunerkrankungen, ebenso die gefundenen antinukleären Antikörper. Nachdem es sich bei der “Blaschkitis” um eine eigenständige Entität handelt und verschiedene Namengebungen sich international nicht durchsetzen konnten, möchten wir vorschlagen, sie nach den Erstbeschreibern Morbus Grosshans-Marot zu benennen.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1045-4861
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: New and used polypropylene tailstrings from the Copper 7 (Cu-7) intrauterine device were examined by a combination of analytical techniques. Optical microscopy, scanning acoustic and electron microscopy, x-ray diffraction, energy dispersive x-ray analysis, and chemical etching were employed to elucidate both the surface and interior morphology of new Cu-7 tailstrings. Tailstrings removed from women following varying periods of use were investigated with optical microscopy, scanning and transmission electron microscopy. In addition, a subset of the used tailstrings were cultured to identify the types of microorganisms associated with them. Our findings show that unused Cu-7 tailstrings are in various stages of degradation owing to a combination of factors which include the high-draw ratio employed during manufacturing, the method of packaging, and the use of a particulate colourant. Furthermore, it is evident that used Cu-7 tailstrings undergo major deterioration while in situ because of the unfavorable interactions between the highly drawn polypropylene and the physiological environment. These results indicate that the polypropylene tailstrings as manufactured for use with the Cu-7 IUD fail to meet accepted design criteria for biomedical implants.
    Additional Material: 27 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2016-02-03
    Description: This study provides new insights into the relation between thermally induced structural reorganization and the macroscopic mechanical properties of radiation-damaged titanite. The natural sample contains ca. 30% amorphous fraction. Low-temperature annealing affects only slightly the sample stiffness and leads to a softening resulting from the defect annihilation in crystalline regions. In the high-temperature annealing regime, amorphous domains recrystallize and this leads to further recovery of defects, reduction of interfaces, grain growth, and, in general, an increase in the long-range order. The thermally induced recrystallization is accompanied by massive dehydration leading to considerable stiffening and hardening. This interpretation of the recrystallization process in titanite based on the correlation of new results from nanoindentation and Raman-spectroscopic measurements complementing previous investigations using thermogravimetric and gas analyses by Hawthorne et al. (1991) and infrared spectroscopy by Zhang et al. (2001) . The new data combined with previous work leads to a detailed description of the annealing behavior of a radiation-damaged titanite, which is a complicated process that includes dehydration and atomic-scale structural reorganization. To minimize the influence of surface phenomena on the hardness measurements, the so-called "true" hardness was used instead of the standard hardness calculation ( Oliver and Pharr 1992 ). A comparison shows that the Oliver and Pharr method clearly underestimates the hardness.
    Print ISSN: 0003-004X
    Electronic ISSN: 1945-3027
    Topics: Geosciences
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