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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 15 (1985), S. 0 
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Immunolatex particles were used as markers for IgE receptors on basophils using electron-microscope scanning. These particles appeared to bind specifically to basophils. Basophils from atopic asthma patients showed greater binding to latex particles than those from intractable asthma patients or healthy subjects. Cap and patch formations on IgE receptors were frequently found in basophils of atopic asthmatics, and cap formation was observed only on basophils that were pear-shaped. The redistribution of IgE receptors, such as that by cap formation, may be a significant triggering mechanism for basophil activation.The latex density on basophils pre-treated with anti-human IgG was much greater in intractable asthmatics than in atopic asthmatics or healthy subjects, and almost all basophils with increased immunolatex particles were pear-shaped, suggesting the presence of some IgG receptors on the surface, and such receptors may play an important role in intractable asthma.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1437-7780
    Keywords: HGF ; cancer chemotherapy ; pneumonia ; silicosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In this study, we report plasma hepatocyte growth factor (HGF) levels during cancer chemotherapy and the relationship between plasma HGF and pneumonia onset in 19 patients with primary lung cancer. These measurements are compared with patients plasma HGF levels prior to cancer chemotherapy, as well as with plasma HGF levels in 23 control patients with silicosis. Plasma HGF, as well as peripheral white blood cells and C-reactive protein, were measured every three days during cancer chemotherapy. In the eight patients who did not develop pneumonia, plasma HGF remained within normal limits. In the 11 patients who did develop pneumonia, however, HGF exceeded normal limits three days after the onset of infection. Further-more, the maximum HGF concentration was significantly higher in the 11 patients with pneumonia (0.62±0.12 ng/mL) than in the eight without complications (0.24±0.02,P〈0.01), in the entire lung cancer group prior to chemotherapy (0.17±0.01,P〈0.01), or in the 23 control patients with silicosis (0.22±0.01,P〈0.01). This suggests that HGF may play a role in repairing lung damage due to pneumonia.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    American Journal of Anatomy 178 (1987), S. 241-249 
    ISSN: 0002-9106
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: To determine the transport pathway of iron-transferrin complex (Fe-TF) into the hepatocyte, we labeled Fe-TF with colloidal gold and perfused rat liver through the portal vein with this probe under different conditions. The tissue was then studied by transmission electron microscopy. At a cold temperature (∼ 4°C), the probe bound to the luminal surface of sinusoidal endothelium without internalization. The binding was limited to the endothelium and there was no binding to Kupffer cells or hepatocytes. The binding was inhibitable in the presence of excess soluble Fe-TF, indicating the specificity of the bindings. At 37°C the probe was internalized via a system of coated pits and vesicles. Morphometric analyses of the temporal sequence of events suggested that the probe was transported, in part, across the endothelium via a system of tubules and vesicles and externalized on the abluminal side via a system of coated pits. The probe was then taken up by hepatocytes. Only minimal uptake was noted when gold-labeled bovine serum albumin was used either at the low temperature or at 37°C. The findings suggest that the liver uptake of Fe-TF complex by hepatocytes is a transendothelial phenomenon (transcytosis).
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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