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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 263 (1978), S. 325-334 
    ISSN: 1432-069X
    Keywords: Suction blister fluid ; Interstitial fluid ; Antipyrine ; Inulin ; Rats ; Saugblasenflüssigkeit ; Interstitialflüssigkeit ; Antipyrin ; Inulin ; Ratten
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung 1. Saugblasen auf der Haut von Ratten, die durch einen negativen Druck von 150 mm Hg erzeugt wurden, ähneln sehr den menschlichen Saugblasen (Histologie, Elektrolytverhalten, Proteingehalt). 2. Pharmakokinetische Experimente haben erwiesen, daß Inulin und Antipyrin, die sich schwach an Eiweiß binden, sich nach den Regeln der Diffusion zwischen Blasenflüssigkeit und Serum einfügen. 3. Die Untersuchungen deuten an, daß die Flüssigkeit in der Blase der Interstitialflüssigkeit ähnelt und damit als Modell gebraucht werden kann, um die Konzentration der Medikamente in der Interstitialflüssigkeit annähernd zu ermitteln.
    Notes: Summary 1. Suction blisters on the skin of rats, obtained with a negative pressure of 150 mm Hg, show a close similarity to human suction blisters, based on histological, electrolyte and protein findings. 2. Pharmacokinetic experiments with inulin and antipyrine have proved that the movement of these low protein binding drugs between blister fluid and serum follows the laws of diffusion. 3. The investigations suggest that blister fluid resembles interstitial fluid and can therefore serve as a model for the estimation of drug concentrations in interstitial fluid.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Archives of Insect Biochemistry and Physiology 1 (1983), S. 105-120 
    ISSN: 0739-4462
    Keywords: phytosterol dealkylation ; ecdysteroids ; makisterone A ; Heteroptera ; Dysdercus ; gas-liquid chromatography/mass spectrometry ; cotton stainer bug ; ecdysone ; 20-hydroxyecdysone ; Chemistry ; Food Science, Agricultural, Medicinal and Pharmaceutical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The absence of phytosterol dealkylation in the cotton stainer bug, Dysdercus fasciatus, has been established and the major ecdysteroid in the fifth-stage larvae identified. The demonstration that the free and esterified sterols in D fasciatus consisted of 95-96% sitosterol and 4-5% campesterol, a similar composition to the cottonseed diet, together with the lack of conversion of [14C]sitosterol into cholesterol, establishes that phytosterol dealkylation does not occur in this insect species. The ecdysteroid titer determined by radioimmunoassay in the fifth instar of D fasciatus shows a distinct peak at day 6, the instar lasting for 7 days. Makisterone A was purified by HPLC from insects at a time of high ecdysteroid titer and identified as a major component by both fast atom bombardment and electron impact mass spectrometry. Gas-liquid chromatography/mass spectrometry (selected ion monitoring) confirmed the occurrence of makisterone A and revealed the presence of two unidentified compounds. One of these occurs in a similar amount to makisterone A and may be 26-hydroxymakisterone A, whereas only a minute amount of the other compound, which may be 20-deoxymakisterone A, was present; further identification of the latter compounds is necessary. C27 ecdysteroids (eg, ecdysone and 20-hydroxyecdysone) and C29 ecdysteroids (eg, podecdysone A) were undetectable. The specificity of the enzymes of ecdysteroid biosynthesis is discussed.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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