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  • 1990-1994  (2)
  • 2,2,2-Triphenyl-1,3,6,2-λ5-dioxaazastibaocane  (1)
  • Complement receptors  (1)
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Years
  • 1990-1994  (2)
Year
  • 1
    ISSN: 1432-0533
    Keywords: Glioma ; Macrophages ; Microglia ; Fc-receptors ; Complement receptors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Cryostat sections of 12 gliomas and of 3 peritumoral brain tissue samples were investigated for mononuclear cell infiltration by immunohistochemistry, concentrating on cells expressing monocyte/macrophage markers. Only low numbers of T cells were detected in the tumors, whereas in average 20%–30% of all cells present in the samples were recognized by various macrophage markers. These cells carried surface epitopes with known function, like Fc-γ (Fcg) and complement receptors. Microglial cells, in comparison to typical debris laden macrophages, were only recognized by a restricted panel of macrophages markers (anti-Fcg receptors 1, 2, 3, complement receptor CR3, HLA DR, common leucocyte antigen CD45 and the monocyte marker RM3/1). In peritumoral tissue mainly dendritic, microglia-like cells were present, which revealed decreased expression of antigens CD4, RM3/1 and Fcg receptors in comparison to those in gliomas. A significant positive correlation was found between the number of RM3/1 or CR3 (CD11b)-positive cells and the proliferation rate of the tumors as documented by the number of bromodeoxyuridine-positive or Ki-67+ cells.
    Type of Medium: Electronic Resource
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  • 2
    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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