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  • Chile  (1)
  • MVAPP decarboxylase  (1)
  • derivative spectrophotometry  (1)
  • diabetes control  (1)
  • Springer  (4)
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Verlag/Herausgeber
  • Springer  (4)
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  • 1
    ISSN: 1436-5073
    Schlagwort(e): solid-phase spectrophotometry ; derivative spectrophotometry ; pyrocatechol violet ; tungsten determination ; natural and industrial waters
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract Derivative spectrophotometry was applied to solid-phase spectrophotometry in order to enhance its sensitivity and remove the large background caused by the absorbance of the resin layer. Determination of micro-amounts of tungsten with pyrocatechol violet to form a 2∶1 green complex in acid medium which is fixed on a dextran-type anion-exchange resin (Sephadex QAEA-25) is described as an example for the application of this technique. The absorbance of the resin packed in a 1-mm spectrophotometric cell, was measured directly. The characteristic peak amplitude of the signal at 674 nm in the first-derivative spectrum is useful for quantitative determination of tungsten (3–16 μg 1−1; RSD 5.8%) in natural and industrial water samples.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    ISSN: 1432-1041
    Schlagwort(e): human insulin ; diabetes control ; blood glucose ; free insulin ; biosynthetic insulin ; semisynthetic insulin ; monocomponent insulin ; pharmacokinetics
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary Sixteen hospitalized insulin requiring diabetics treated with a single daily subcutaneous injection were randomly allocated either to a mixture of porcine Actrapid+Lente MC or a mixture of Regular+NPH—Biosynthetic human insulin (Study 1). In Study 2, 10 patients receiving two daily insulin injections were treated at random with either porcine Actrapid+Monotard, or Actrapid+Monotard—Semisynthetic human insulin or Regular+NPH—Biosynthetic human insulin. Once an optimal insulin regimen was obtained, circadian blood glucose and plasma free insulin profiles (7–9 time points) were determined with the two (Study 1) or three (Study 2) insulin preparations, keeping the doses of insulin constant. In Study 1 no significant difference in blood glucose (BG) or plasma free insulin (FIRI) profiles was observed. The mean daily blood glucose, the mean amplitude of glycaemic excursions (MAGE), the index of blood glucose control (M-value of Schlichtkrull), as well as the post-breakfast increases in blood glucose and mean free IRI, were similar with both types of insulin. In Study 2, BG and FIRI profiles were also similar, except for a significantly lower (p〈0.02) BG at 8.30 p.m. with both human insulins. No significant differences were found in free IRI at that time. Mean BG, M index, MAGE and mean FIRI were similar but the postbreakfast increase was significantly smaller with SHI. In conclusion, the pharmacokinetics of animal monocomponent, semisynthetic and biosynthetic human insulin appear similar, but evening BG control was better with both types of human insulins given twice daily.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    European journal of clinical pharmacology 37 (1989), S. 139-143 
    ISSN: 1432-1041
    Schlagwort(e): benzodiazepine ; Chile ; agent consumption/ — utilization ; diazepam ; flunitrazepam
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The consumption of benzodiazepine drugs (BDZ) in Chile in the period 1982–1986 has been studied by the DDD method. National use was assessed using drug import forms as a source of information, assuming that the total amount imported was manufactured and consumed in the same year. The utilization did not show a constant pattern, being 32.7, 33.6, 50.2, 34.9, and 31.3 DDD 1000 per inhabitants per day in 1982, 1983, 1984, 1985 and 1986, respectively. During the study period, diazepam was the most commonly used agent amongst anxiolytic BDZ, reaching a peak of 27.1 DDD per 1000 inhabitants per day in 1984, and flunitrazepam was the most popular hypnotic, attaining its maximum in 1986 (6.4 DDD per 1000 inhabitants per day). The use of BDZ at community pharmacy level was also evaluated, employing the International Marketing System (IMS) as the source of information. At that level the pattern of utilization showed a constant increase during the study period, being 14.9 and 25.8 DDD/1000 inhabitants/per day in 1982 and 1986, respectively. In community pharmacies the anxiolytic BDZ most often consumed was diazepam (maximum 9.1 DDD per 1000 inhabitants per day in 1985), and the commonest hypnotic was flunitrazepam (peak 6.0 DDD per 1000 inhabitants per day in 1986). National consumption of BDZ appeared higher and more variable than use at the community pharmacy level, but in both there was greater usage of anxiolytic than of hypnotic BDZ, and diazepam and flunitrazepam were the most popular agents.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Springer
    Molecular and cellular biochemistry 105 (1991), S. 21-25 
    ISSN: 1573-4919
    Schlagwort(e): cholesterogenesis ; phenylketonuria ; HMG-CoA reductase ; MVAPP decarboxylase ; phenylalanine-derivatives
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: Abstract Phenylalanine, phenylpyruvate and phenylacetate produced a considerable inhibition of chick liver mevalonate 5-pyrophosphate decarboxylase while mevalonate kinase and mevalonate 5-phosphate kinase were not significantly affected. Phenolic derivatives of phenylalanine produced a similar inhibition of decarboxylase activity than that found in the presence of phenyl metabolites. The degree of inhibition was progressive with increasing concentrations of inhibitors (1.25–5.00 mM). Simultaneous supplementation of different metabolites in conditions similar to those in experimental phenylketonuria (0.25 mM each) produced a clear inhibition of liver decarboxylase and 3-hydroxy-3-methylglutaryl-CoA reductase. To our knowledge, this is the first report on the in vitro inhibition of both liver regulatory enzymes of cholesterogenesis in phenylketonuria-like conditions. Our results show a lower inhibition of decarboxylase than that of reductase but suggest an important regulatory role of decarboxylase in cholesterol synthesis.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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