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  • 1
    Digitale Medien
    Digitale Medien
    Melanocytic lesions in lymph nodes associated with congenital naevus (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 23 (1993), S. 0 
    Details
    ISSN: 1365-2559
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Two cases of melanocytic lesions in lymph node associated with congenital naevus are presented. The first was a 30-year-old man with a nodular melanoma arising in a small congenital naevus. The second was a 2-year-old male infant with a giant congenital naevus. In both cases, naevus cell aggregates were observed in the capsule, trabeculae, perisinusoidal areas and lymphatic vessels surrounding the nodes. In the first case, clusters of large atypical melanocytes were present amongst naevus cell aggregates in the perisinusoidal areas as well as in the lymphoid parenchyma. Between the naevus cells and large atypical melanocytes, transitional forms were observed which supports the idea that the presence of large atypical melanocytes is indicative of benign naevus cells. In the second case, marginal sinuses were packed with clusters of large melanin-rich cells. Immunohistochemically, these cells were S-100 protein negative, but ultrastructural studies proved them to be melanocytes. They were considered indicative of spread of benign naevus cells via lymphatic vessels. Arrested migration of naevus cells during embryogenesis and benign spread of naevus cells are possible explanations for the histogenesis of naevus cell aggregates in lymph nodes associated with congenital naevus.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2559.1993.tb00493.x
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  • 2
    Digitale Medien
    Digitale Medien
    Differential expression of CR3, FcɛRll and FcγRlll on Polymorphonuclear leukocytes in gingival crevicular fluid (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of periodontal research 28 (1993), S. 0 
    Details
    ISSN: 1600-0765
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Polymorphonuclear leukocytes (PMNLs) are the most numerous cell population among the cellular infiltrates in gingival crevicular fluid (GCF) and play important roles in the host-defensive system in the gingival crevices. We determined the percentage of neutrophils, cosinophils and basophils in total PMNLs by light microscopic observation using Randolph-methylene blue staining, then assessed flow cytometric differences in the expression of CR3, FcγRIII, FcɛRII. LFA-1α, and LFA-Iβ on PMNL in GCF and peripheral blood (PB) from 21 patients with adult periodontius (AP) and 13 healthy donors. Percentages of basophils and eosinophils were higher in GCF than in PB. In both AP patients and healthy subjects, expression of CR3 and FcɛRll was higher while FeγRIII was lower in GCF than in PB. The statistical analysis showed that the expressions of FcγRIII and FcɛRII on GCF PMNLs were lower in AP patients than in healthy subjects. Expressions of LFA-1α and β on GCF were similar to those on PB PMNLs. PB PMNLs stimulated in vitro with Porphyromonas gingivalts culture supernatant and fMLP displayed an expression pattern of CR3, FcγRIII and FcɛRII on GCF PMNLs. However, C5a and IL-I failed to induce changes in FcγRIII and FcɛRII. The results indicate that GCF neutrophils are activated, present enhanced adhesion and a decreased IgG-binding ability which would reflect that they are at the terminal stage of activation, and that GCF contains a larger eosinophil fraction than in PB. Moreover, these GCF eosinophils appear to be activated.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1600-0765.1993.tb01080.x
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  • 3
    Digitale Medien
    Digitale Medien
    Duration patterns of percussion sound in healthy and periodontally affected teeth (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 17 (1990), S. 0 
    Details
    ISSN: 1365-2842
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Ten periodontally affected subjects and 10 healthy subjects were selected in order to examine the duration patterns of percussion sounds in all upper teeth, excluding the 8′s.Probing depth, loss of attachment, tooth mobility by ‘Periotest’, bone loss and percussion sound duration via occlusal sound analyser were recorded during the pretreatment period.The following results were obtained from the study:〈list xml:id="l1" style="custom"〉(i)the normal duration of percussion sounds ranged from 4.40–5.33 ms;(ii)percussion sound values of periodontal patients were of longer duration than those of healthy subjects;(iii)a close correlation between duration and other individual parameters was found in all upper teeth, with the exception of molars.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2842.1990.tb01429.x
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  • 4
    Digitale Medien
    Digitale Medien
    A simple, rapid and simultaneous analysis of complex volatile hydrocarbon mixtures in blood using gas chromatography/mass spectrometry with a wide-bore capillary column (1990)
    Springer
    International journal of legal medicine 103 (1990), S. 567-572 
    Details
    ISSN: 1437-1596
    Schlagwort(e): Volatile hydrocarbons in the blood ; screening method ; flüchtige Kohlenwasserstoffe im Blut ; Screeningmethode
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin , Rechtswissenschaft
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Es wird über eine Screeningmethode zum Nachweis flüchtiger Kohlenwasserstoffe im Blut mittels Gaschromatographie/Massenspektrometrie berichtet, wobei wide-bore Kapillaren und die Headspace-technik eingesetzt wurden. Toluol-d8 und Indan dienten als interne Standards bei der quantitativen Analyse. Kohlenwasserstoffe mit Retentionsindizes zwischen 600 und 1200 konnten mit der Ionenchromatographie simultan und quantitativ noch in relativ geringen Konzentrationsbereichen bis 0.01 μg/ ml bestimmt werden. In der Praxis ist die Methode nützlich, wenn es in forensischen Fällen darum geht, komplexe Kohlenwasserstoffgemische (wie z. B. Petroleum) rasch zu analysieren.
    Notizen: Summary A screening method for detecting volatile hydrocarbons in blood has been developed using gas chromatography/mass spectrometry with a wide-bore capillary column and a headspace method. Toluene-d8 and indan were used as the internal standards for quantitative analysis. Hydrocarbons with retention indices from 600 to 1200 were simultaneously and quantitatively detected in relatively low concentrations (0.01 μg/m1) in reconstructed ion chromatography. This method could prove useful in forensic cases in which urgent examination of complex hydrocarbon mixtures, e.g. petroleum components, is required.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00202716
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  • 5
    Digitale Medien
    Digitale Medien
    A simple, rapid and simultaneous analysis of complex volatile hydrocarbon mixtures in blood using gas chromatography/mass spectrometry with a wide-bore capillary column (1990)
    Springer
    International journal of legal medicine 103 (1990), S. 567-572 
    Details
    ISSN: 1437-1596
    Schlagwort(e): Volatile hydrocarbons in the blood ; screening method ; flüchtige Kohlenwasserstoffe im Blut ; Screeningmethode
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin , Rechtswissenschaft
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Es wird über eine Screeningmethode zum Nachweis flüchtiger Kohlenwasserstoffe im Blut mittels Gaschromatographie/Massen-spektrometrie berichtet, wobei wide-bore Kapillaren und die Headspace-technik eingesetzt wurden. Toluol-d8 und Indan dienten als interne Standards bei der quantitativen Analyse. Kohlenwasserstoffe mit Retentionsindi-zes zwischen 600 und 1200 konnten mit der Ionenchromatographie simultan und quantitativ noch in relativ geringen Konzentrationsbereichen bis 0.01 μg/ ml bestimmt werden. In der Praxis ist die Methode nützlich, wenn es in forensischen Fällen darum geht, komplexe Kohlenwasserstoffgemische (wie z.B. Petroleum) rasch zu analysieren.
    Notizen: Summary A screening method for detecting volatile hydrocarbons in blood has been developed using gas chromatography/mass spectrometry with a wide-bore capillary column and a headspace method. Toluene-d8 and indan were used as the internal standards for quantitative analysis. Hydrocarbons with retention indices from 600 to 1200 were simultaneously and quantitatively detected in relatively low concentrations (0.01 μg/ml) in reconstructed ion chromatography. This method could prove useful in forensic cases in which urgent examination of complex hydrocarbon mixtures, e.g. petroleum components, is required.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01261420
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  • 6
    Digitale Medien
    Digitale Medien
    Postmortem changes in hapten-specific IgE antibody responses in mice (1991)
    Springer
    International journal of legal medicine 104 (1991), S. 133-135 
    Details
    ISSN: 1437-1596
    Schlagwort(e): Post-mortem change ; Immunoglobulin E ; Passive cutaneous anaphylaxis ; Viscera ; Mouse ; Postmortale Veränderungen ; Immunoglobulin E ; Passive kutane Anaphylaxie ; Organe ; Maus
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin , Rechtswissenschaft
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Die Untersuchung wurde durchgeführt, um mit Hilfe des passiven kutanen Anaphylaxie-Tests bei Ratten die postmortale Stabilität des haptenspezifischen Immunoglobulins E von Mäusen zu überprüfen. In-vitro IgE-Antikörper-Antworten waren — unter Raumtemperatur-Bedingungen — 3 Tage unverändert. Selbst in Fällen, wo Blut vom Kadaver nicht gewonnen werden konnte, war es möglich, die hapten-spezifische IgE-Antikörper-Antwort bis zu 3 Tagen nach dem Tode zu bestimmen, indem der Überstand von Organ-Homogenaten verwendet wurde.
    Notizen: Summary This Study was carried out to examine the post-mortem stability of hapten-specific immunoglobulin E (IgE) antibody in mice by the passive cutaneous anaphylaxis test in rats. In vitro IgE antibody responses in blood were stable for 3 days at room temperature. Even in cases when blood could not be obtained from the caver it was possible to measure the hapten-specific IgE antibody response up to 3 days after death using the supernatant of the visceral homogenates.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01369716
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  • 7
    Digitale Medien
    Digitale Medien
    A model of the mechanisms of long-term potentiation in the hippocampus (1990)
    Springer
    Biological cybernetics 64 (1990), S. 33-39 
    Details
    ISSN: 1432-0770
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Informatik , Physik
    Notizen: Abstract Long-Term Potentiation (LTP) in the hippocampus has been considered to be a phenomenon closely related to learning and memory in the brain. In this paper, an integrated model of LTP is constructed based on hypotheses about both the mechanism of LTP induction and that of LTP maintenance, that is, the NMDA-receptor channel, protein phosphorylation and protein turnover. The validity of the model is discussed based on the results of computer simulations.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00203628
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  • 8
    Digitale Medien
    Digitale Medien
    S13.3 Expression of tumor-associated ganglioside and its expression mechanism in IL-3 independent NSF-60 cells introduced with IL-3 gene (1993)
    Springer
    Glycoconjugate journal 10 (1993), S. 305-305 
    Details
    ISSN: 1573-4986
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01210065
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  • 9
    Digitale Medien
    Digitale Medien
    Polymer coating onto anodized aluminiun plate by anodic electrode position from alkali-swollen carboxylated acrylic emulsion (1990)
    Springer
    Colloid & polymer science 268 (1990), S. 697-697 
    Details
    ISSN: 1435-1536
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01410414
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  • 10
    Digitale Medien
    Digitale Medien
    Distribution of the beta-2 adrenergic receptor messenger RNA in the rat brain by in situ hybridization histochemistry: Effects of chronic reserpine treatment (1991)
    Springer
    Neurochemical research 16 (1991), S. 1253-1256 
    Details
    ISSN: 1573-6903
    Schlagwort(e): beta-2 adrenergic receptor ; in situ hybridization histochemistry ; receptor up-regulation ; reserpine ; rat brain
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We studied the distribution of the rat brain beta-2 adrenergic receptor (AR) mRNA, and the effects of monoamine depletions by chronic reserpine treatment using in situ hybridization histochemistry. In the control group, high level signals of beta-2 AR mRNA were observed in the parietal, frontal and piriform cortices, the medial septal nuclei, the olfactory tubercle, and the midbrain. Moderate signals were found in the striatum, the retrosplenial cortex, the hippocampus, and the thalamic nuclei. After chronic reserpine treatment, beta-2 AR mRNA levels were increased in many brain regions. The large increases were seen in the hippocampus, all thalamic nuclei, the amygdaloid nuclei, and the midbrain, followed by the striatum and the occipital cortex. The receptor up-regulation resulting from chronic monoamine depletion may be due to these increases in beta-2 AR mRNA, indicating that this up-regulation may be caused by increased receptor production rather than decreased receptor degradation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00966654
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