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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Glycoconjugate journal 17 (2000), S. 617-626 
    ISSN: 1573-4986
    Keywords: α1,3fucose ; α1,6fucose ; sialic acid ; polyα2,8sialic acid ; surface membrane glycoforms ; cystic fibrosis ; lactosylated polylysine gene therapy vector
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Terminal glycosylation has been a recurring theme of the laboratory. In cystic fibrosis (CF), decreased sialic acid and increased fucosyl residues in α1,3 position to antennary N -acetyl glucosamine is the CF glycosylation phenotype. The glycosylation phenotype is reversed by transfection of CF airway cells with wtCFTR. In neuronal cells, polymers of α2,8sialyl residues are prominent in oligodendrocytes and human neuroblastoma. These findings are discussed in relationship to early studies in our laboratories and those of other investigators. The potential extension of these concepts to future clinical therapeutics is presented.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-4986
    Keywords: glycosylation ; cystic fibrosis ; airway epithelial cells ; α1,3fucose ; sialic acid ; CFTR ; CFTR transfection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Cystic fibrosis (CF) has a characteristic glycosylation phenotype usually expressed as a decreased ratio of sialic acid to fucose. The glycosylation phenotype was found in CF/T1 airway epithelial cells (ΔF508/ΔF508). When these cells were transfected and were expressing high amounts of wtCFTR, as detected by Western blot analysis and in situ hybridization, the cell membrane glycoconjugates had an increased sialic acid content and decreased fucosyl residues in α1,3/4 linkage to antennary N[emsp4 ]-acetyl glucosamine (Fucα1,3/4GlcNAc). After the expression of wtCFTR decreased, the amount of sialic acid and Fucα1,3/4GlcNAc returned to levels shown by the parent CF cells. Sialic acid was measured by chemical analysis and Fucα1,3/4GlcNAc was detected with a specific α1,3/4 fucosidase. CF and non-CF airway cells in primary culture also had a similar reciprocal relationship between fucosylation and sialylation. It is possible that the glycosylation phenotype is involved in the pathogenesis of CF lung disease by facilitating bacterial colonization and leukocyte recruitment.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 52 (1907), S. 368-396 
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurde eine bequeme Methode zur elektrolytischen Darstellung der Vanadisalze ausgearbeitet.Es wurde das elektromotorische Verhalten gelöster Vanadinsalze in verschiedenen Oxydationsstufen untersucht.Es wurde qualitativ das Verhalten der Vanadinsalze zu verschiedenen Oxydations- und Reduktionsmitteln, sowie zu Bikarbonatlösungen untersucht.Es wurde quantitativ die Reaktionsgeschwindigkeit zwischen Vanadi- und Silbersulfat, sowie der katalytische Einflufs von Eisen- und Kupfersalzen auf diese Reaktion untersucht.Bei Gegenwart von Kupfersalzen wird in dieser Reaktion eine Anfangsbeschleunigung beobachtet, die mit einer amorphen Ausscheidung des Silbers Hand in Hand geht.Es wurden die qualitativen Methoden zum Nachweis von Vanadi- und Vanadoverbindungen kritisch besprochen.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Glycoconjugate journal 1 (1994), S. 263-270 
    ISSN: 1573-4986
    Keywords: airway epithelial cells ; CFTR ; cystic fibrosis ; α-l-fucosidase ; fucosylation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Altered glycosylation is a phenotypic characteristic of cystic fibrosis (CF), and some of the alterations are summarized. The lungs are the site of the lethal pathology of the disease. Therefore, two of the characteristics were examined in CF and non-CF immortalized airway epithelial cell lines (AEC). The activity of α-l-fucosidase was elevated (280%) in CF AEC when compared with non-CF AEC, whereas the activities of the other lysosomal enzymes which were examined were similar in both cell types. α-l-Fucosidase activity was transiently increased in the non-CF cells after treatment with Brefeldin A (BFA) for 6 h. Thus BFA caused the normal cells to express a phenotypic characteristic of CF. Glycopeptides from the CF and non-CF AECs metabolically labeled withl-[3H]fucose were examined for binding to lentil lectin-Sepharose. A higher percentage of CF glycopeptides bound to lentil lectin, 43% compared with 23% for non-CF control. In addition a higher percentage of CF glycopeptides were bound tightly to lentil lectin and required 0.2M α-methylmannoside to be eluted. This species of tightly bound glycopeptides increased dramatically to 77% from 46% when the CF AEC were treated with BFA. In contrast, the non-CF cell glycopeptides had a minor decrease in tightly bound glycopeptides to 26% from 33% after BFA treatment. Thus, the CF AEC showed fucosylation alteration observed previously for other CF cells and tissue.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 232 (1937), S. 319-324 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Die günstigsten Bedingungen für die Reaktion zwischen Natriumcarbonatlösung und einem gefällten käuflichen Tricalciumphosphat wurden bestimmt und mit denen für Knochenasche verglichen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0044-2313
    Keywords: Zintl anions ; extraction of alloys ; homo atomic nine vertex polyhedra ; crystal structure ; paramagnetism ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Homoatomare neunkernige Polyeder mit Elementen der Gruppe XIV. Die Kristallstrukturen und paramagnetischen Eigenschaften von [K-(2,2,2-crypt)]6E9E9 · 1.5-Ethylendiamin · 0.5 Toluol, E = Sn and Pb1)Die Extraktionen von Legierungen der nominalen Zusammensetzung „KE2.25“ mit Ethylendiamin (en), (2,2,2)crypt und Toluol (tol) ergeben in guten Ausbeuten paramagnetische Verbindungen der Zusammensetzung [K-(2,2,2-crypt)]6E9E9 · 1.5 en · 0.5 tol (E = Sn (2 b), Pb (2 c)). Einkristall-Röntgenstrukturanalysen zeigen, daß zwei unterschiedliche E9 Cluster pro asymmetrischer Einheit der Elementarzelle vorliegen mit Konfigurationen von verzerrten, dreifach überkappten trigonal prismatischen Polyedern. 2 b: Raumgruppe P21/c (Nr. 14), Z = 4, a = 28.042(8), b = 23.527(5), c = 27.703(8) Å, β = 93.46(2)°; 2 c: Raumgruppe P21/c (Nr. 14), Z = 4, a = 28.356(8), b = 23.757 (5), c = 27.885(8) Å, β = 94.01(2)°.
    Notes: The extractions of alloys of the nominal composition “KE2.25” with ethylenediamine (en), (2,2,2)crypt, and toluene (tol) lead in good yields to paramagnetic compounds of the composition [K-(2,2,2-crypt)]6E9E9 · 1.5 en · 0.5 tol (E = Sn (2 b), Pb (2 c)). X-ray single crystal structure analyses show that two different E9 clusters per asymmetric unit are present with configurations of distorted tricapped trigonal prismatic polyhedra. 2 b: space group P21/c (No. 14), Z = 4, a = 28.042(8), b = 23.527(5), c = 27.703(8) Å, β = 93.46(2)°; 2 c: space group P21/c (No. 14), Z = 4, a = 28.356(8), b = 23.757(5), c = 27.885(8) Å, β = 94.01(2)°.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 72 (1939), S. 1866-1869 
    ISSN: 0365-9631
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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