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  • 1985-1989  (1)
  • 1980-1984  (1)
  • Analytical Chemistry and Spectroscopy  (1)
  • Local anesthetics  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 270 (1981), S. 413-419 
    ISSN: 1432-069X
    Keywords: Epidermal vacuolation ; Local anesthetics ; Intradermal (i.d.) injection ; Subcutaneous (s.c.) injection ; Epidermale Vacuolisierung ; Lokalanaestheticum ; intradermale (i.d.) Injektion ; subcutane (s.c.) Injektion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Um den Mechanismus der Vacuolisierung zu erklären, die man häufig in den normalen Epidermiszellen in der Umgebung der Hauttumoren beobachtet, wurden 0.5 und 1.0% Procainhydrochlorid mit und ohne Epinephrine injiziert — entweder i.d. oder s.c. — und zwar bei reifen weißen männlichen Kaninchen. Die Injektionsstellen entweder sofort oder nach 15 min excidiert. Die Epidermis zeigte an der Stelle der i.d. Injektion eine signifikantere Zunahme der Zahl der vacuolisierteten Zellen als die der s.c. Injektionen (P〈0.001) ohne Rücksicht auf die Art der Lokalanaesthetica und die Zeitdauer zwischen Injektion und Excision. Die Elektronenmikroskopie stellte die intracytoplasmischen Vacuolen ohne abgrenzende Membran im Cytoplasma der Keratinocyten dar. Das im oberem Corium lokalisierte Ödem infolge der Injektion des Betäubungsmittels verursacht das Ödem und die Vacuolisierung in den bedeckenden Epidermiszellen. Die i.d. Injektion des Lokalanaestheticums möchten wir als eine Ursache der epidermalen Vacuolisierung auffassen.
    Notes: Summary To elucidate the mechanism of vacuolation frequently encountered in the normal epidermal cells surrounding skin tumors, 0.5 and 1.0% procaine hydrochloride, and 1.0% lidocaine hydrochloride with and without epinephrine were injected either i.d. or s.c. into mature white male rabbits, and the sites of injection were biopsied either immediately or after 15 min. The epidermis of the site of intradermal injection showed a significant increase in the number of vacuolated cells in contrast to the site of s.c. injection (P〈0.001) irrespective of the kinds of local anesthetics and the time lapse from injection to biopsy. Electron microscopy revealed vacuole-formations without limiting membrane in the cytoplasm of the kerationocytes. It is suggested that the local edema in the upper dermis caused by injection of anesthetics gives rise to edema and vacuolation of overlying epidermal cells, and that i.d. injection of local anesthetics may be regarded as a cause of epidermal vacuolation.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 19 (1988), S. 199-201 
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: High-pressure Raman spectra of liquid and solid thiophene C4H4S have been measured up to 100 kbar at 300 K in a gasketed diamond anvil cell. The pressure dependence of intramolecular and intermolecular vibrational modes revealed a solidification point at 6 kbar and a pressure-induced phase transition at 40 kbar. This solid-solid phase transition was identified as the III→IV phase transition by comparison with the intermolecular Raman spectra of the low-temperature solids at atmospheric pressure. The appearance of a dark-red modification of C4H4S, which is irreversibly formed at pressures above 80 kbar with laser irradiation, is discussed.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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