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  • 11
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 285 (1993), S. 13-19 
    ISSN: 1432-069X
    Keywords: Hydroxyethylstarch ; Tissue storage ; Macrophages ; Immunohistochemistry ; Itching
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Severe itching for unknown reasons has been reported after administration of hydroxyethylstarch (HES) in haemodilution therapy of humans. After HES treatment, vacuoles in cells of various organs in humans have been shown, predominantly affecting the mononuclear phagocyte system. These vacuoles present indirect evidence for phagocytosis of HES particles. Since phagocytosis is also known to occur in the skin, this organ might represent a target for HES deposition, resulting in subsequent release of mediators responsible for the observed itching. The aim of the present investigation was to study skin biopsies of patients, who had received HES and suffered subsequently from itch. Skin sections were investigated for morphological impairment by means of light and electron microscopy, immunohistochemistry and immunoelectron microscopy using a polyclonal anti-HES antiserum. Storage of HES was demonstrated in the skin of all patients, mainly in dermal macrophages, endothelial cells of blood and lymph vessels, some perineural cells and endoneural macrophages of larger nerve fascicles, some keratinocytes and Langerhans cells. Treatment with antihistaminic agents proved ineffective in these patients; this fits with the observation that morphological signs of histamine release from mast cells were absent. These findings indicate that other mediators from HES-affected cells must be responsible for the development of the itching. Thus, investigation of HES storage may be a useful contribution to the elucidation of release of itch mediators and induction of pruritus.
    Type of Medium: Electronic Resource
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  • 12
    ISSN: 1434-4726
    Keywords: Mononuclear cells ; Adhesion molecules ; Cellular distribution ; Squamous cell carcinoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The expressions and cellular distributions of two pairs of adhesion molecules CD2/LFA-3 (leukocyte function-associated antigen-3) and LFA-1/ICAM-1 (intercellular adhesion molecule-1) were examined in inflammatory cellular infiltrates of advanced squamous cell carcinomas of the head and neck by immunohistochemical techniques including double-staining methods. Thirteen patients were investigated using the following monoclonal antibodies (mAbs): CD2, LFA-3 (CD58), ICAM-1 (CD54), LFA-1 (CD11a), the alpha/beta and gamma/delta T-cell receptor, pan T cells and broadly distributed monocyte/macrophage (m/mø) [Fc gamma RII (CD32), 25F9, RM3/1]. LFA-3 staining was observed on a high number of cells (968 ± 112 cells/mm2), correlating to the number of Fe gamma RII (CD32; P 〈 0.01), 25F9 (P 〈 0.05) and RM3/1 (P 〈 0.05) positive m/mø. Its ligand CD2 was found on 365 ± 126 cells/mm2, representing about 50% of CD3+ cells (730 ± 286 cells/mm2). CD2 positivity correlated to CD3 and CD8 (P 〈 0.01) but not to CD4+ T cells. LFA-1 and ICAM-1 were expressed on lymphocytes as well as on m/mø. ICAM-1+ cells (902 ± 205 cells/mm2) correlated to CD3+, CD8+ and RM3/1+ cells (P 〈 0.01). LFA-1 positivity (803 ± 255 cells/mm2) showed correlations to nearly all investigated antigens, as well as to CD4+ T cells (P 〈 0.05). These results show that different m/mø subsets display distinct patterns of adhesion molecule expressions suggesting different pathways of regulation. The CD3+ lymphocyte population revealed a lack of CD2 expression that was more pronounced in the CD4+ subset and indicated impaired lmyphocyte function.
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 605 (1991), S. 137-143 
    ISSN: 0044-2313
    Keywords: λ5-Stibane compounds ; 2,2,2-Triphenyl-1,3,6,2-λ5-dioxaazastibaocane ; preparation - crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation of Polynuclear γ-Stibanes by Reaction of Pentaphenylstibane with Di- and Tricarboxylic Acids or Di- and Trialcohols. Crystal Structure of (C6H5)3Sb[(OC2H4)2NH]The reaction between λ5-stibanes of the type (C6H5)4SbX (X=C6H5/OCH3) withDicarboxylic acids or with di-ols Y(—R—OH)2 [Y=S: R=C2H4, CH2C(O), C2H4C(O), Y=O: R=C2H4, Y=NH: R=CH2C(O)] in ratio of 2:1 and with nitrilotriacetic acid or triethanolamine in a ratio of 3:1, leads to bi- and trinuclear compounds, which are light- and air-stable solids. A 1:2-reaction of diethanolamine with pentaphenylstibane or methoxytetraphenylstibane gives the heterocycle (C6H5)3Sb[(OC2H4)2NH], which is characterized by an X-ray crystalstructure analysis.
    Notes: Die Reaktion von λ5-Stibanen des Typs (C6H5)4SbX (X=C6H5/OCH3) mit Dicarbonsäuren und -alkoholen Y(—R—OH)2 [Y=S: R=C2H4, CH2C(O), C2H4C(O), Y=O: R=C2H4; Y=NH: R=CH2C(O)] im Verhältnis 2:1 sowie mit Nitrilotriessigsäure und Triethanolamin im Verhältnis 3:1 führt zu entsprechenden Zwei- bwz. Dreikernverbindungen, die man als licht- und luftstabile Feststoffe in quantitativer Ausbeute erhält. Bei der Umsetzung von Diethanolamin mit Pentaphenylstiban oder Methoxytetraphenylstiban im Verhältnis 1:2 isoliert man die heterozyklische Verbindung (C6H5)3Sb[(OC2H4)NH], die röntgenstrukturanalytisch untersucht werden konnte.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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