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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Crystal Growth 131 (1993), S. 277-282 
    ISSN: 0022-0248
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0022-0248
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Crystal Growth 127 (1993), S. 352-355 
    ISSN: 0022-0248
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Luminescence 30 (1985), S. 204-216 
    ISSN: 0022-2313
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1435-1803
    Keywords: Key words Atherosclerosis – extracellular matrix – HMG-CoA reductase inhibitors – smooth muscle – thrombospondin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Clinical studies have shown that treatment with 3-hydroxy-3-methyl-glutaryl-coenzyme A (HMG-CoA) reductase inhibitors can stabilize atherosclerotic plaques and slow their progression. One determinant of plaque stability and size is the composition of the vascular extracellular matrix. The aim of this study was to evaluate the effects of different HMG-CoA reductase inhibitors on the expression of major components of the vascular extracellular matrix in smooth muscle cells. Cultured human vascular smooth muscle cells were incubated for 24–72 h with the HMG-CoA reductase inhibitors lovastatin (1–50 μmol/L), simvastatin (0.05–20 μmol/L), and pravastatin ( 1–100 μmol/L). RNA expression of the extracellular matrix proteins thrombospondin-1, fibronectin, collagen type I, and biglycan as well as expression of the cytokine TGF-β1 was determined by Northern blotting. Extracellular matrix protein secretion was visualized by immunofluorescence. In addition, cell proliferation and viability were measured using BrDU-ELISAs, MTT-tests, and direct cell counting. Expression of thrombospondin-1 was significantly decreased after 24 h incubations with lovastatin in concentrations as low as 1 μmol/L. Coincubation with the cholesterol precursor mevalonate completely reversed this effect. The downregulation of thrombospondin-1 expression occured in the same concentration range that also inhibited cell proliferation. In contrast, lovatatin did not affect expression of fibronectin, whereas collagen type I and biglycan expression decreased only after long incubations with high, toxic lovastatin concentrations. Simvastatin, but not the very hydrophilic compound pravastatin, had a similar effect on extracellular matrix expression as lovastatin. In summary, lovastatin and simvastatin predominantly decrease the expression of the glycoprotein thrombospondin-1, which is functionally associated with smooth muscle cell migration and proliferation. In contrast, expression of plaque-stabilizing extracellular proteins such as collagen type I and biglycan are much less affected.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Archives of toxicology 26 (1970), S. 56-61 
    ISSN: 1432-0738
    Keywords: Benzene ; Hematomyelia ; Neurologic Lesions Caused by Benzene Poisoning ; Benzol ; Hämatomyelie ; Neurologische Störungen bei Benzolvergiftung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wird über eine neurologische Erkrankung bei chronischer Benzolvergiftung berichtet, die zunächst als Syringomyelie angesehen wurde. Die offenbar ziemlich plötzliche Manifestation, die fehlende Progression, das völlige Fehlen dysraphischer Zeichen und das relativ hohe Manifestationsalter machen jedoch eine Hämatomyelie als Folge der mit dem Benzolismus verknüpften erhöhten Blutungsneigung wahrscheinlich. Der Erkrankte starb 12 Jahre nach Krankheitsbeginn durch Suicid. Eine Obduktion wurde leider nicht vorgenommen. Einige Berichte über weitere neurologische Erkrankungen in Zusammenhang mit gesichertem oder vermutetem Benzolismus werden erörtert.
    Notes: Summary A case of chronic benzene poisoning is described in which the resulting neurologic lesion was provisionally regarded to have been syringomyelia. The apparent sudden onset, the lack of progression, the complete absence of signs of dysraphia, and the relatively advanced age of manifestation all point to hematomyelia as the cause of the lesion, which in turn follows as a consequence of the increased bleeding tendency associated with benzene poisoning. The patient committed suicide 12 years after the onset of the illness. Unfortunately a post mortem examination was not carried out. Other reports dealing with further neurological problems connected with proven or suspected benzene poisoning are discussed.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 610 (1992), S. 145-150 
    ISSN: 0044-2313
    Keywords: Iodinetrimethylsilane · β-picoline ; -.γ-picoline ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Crystal Structure of Me3SiI · β-Picoline and Me3SiI · γ-Picoline A Comparison between the Lewis-Bases Pyridine, β-Picoline, and γ-PicolineThe reaction of Iodinetrimethylsilane with β- und γ-Picoline (Pic) leads to solid 1 : 1 compounds Me3SiI · β-Picoline 1, Me3SiI · γ-Picoline 2. The reaction was performed at room temperature. Yellow single crystals were obtained by sublimation. Single crystal X-ray investigations confirm that both compounds are ionic [Me3SiPic]+I-. The comparison of β-Picoline with γ-Picoline and Pyridine (Py) demonstrates that the presence of a methyl group and also its position has no significant influence on the Si—N bond length in compound 1, 2 and on the adduct Me3SiI · Py.
    Notes: Iodtrimethylsilan reagiert mit β- und γ-Picolin (Pic) bei Raumtemperatur zu festen 1 : 1 Addukten (M3SiI · β-Picolin 1, Me3SiI · γ-Picolin 2), die durch Sublimation leicht gelblich gefärbte Einkristalle bilden. Die Röntgenstrukturanalyse beider Verbindungen beweist eine ionische Struktur des Typs [Me3SiPic]+ I-. Der Vergleich von β-Picolin mit γ-Picolin und Pyridin (Py) zeigt, daß die Anwesenheit einer Methylgruppe und auch deren Position keinen signifikanten Einfluß auf die Si—N-Bindungslänge in Verbindung 1, 2 und dem Addukt Me3SiI · Py hat.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 66 (1954), S. 92-92 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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