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  • 1
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Inflammation research 45 (1996), S. 435-437 
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 4 (1971), S. 32-37 
    ISSN: 1432-1041
    Keywords: Glibenclamide ; pharmacokinetics ; metabolism ; potentiation of hypoglycemic action ; phenylbutazone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Summary Metabolically healthy subjects were given an intravenous injection of 1,13 mg14C-labelled glibenclamide (HB 419). The plasma level, renal elimination of the radioactivity and metabolism of the substance were investigated. Two minutes after administration the HB 419 is virtually present only in the blood and at the end of the distribution period mostly in the extracellular space. 53% of the radioactivity is excreted via the kidneys in the form of metabolites. If glibenclamide is administrated in the same way to the same subjects after pretreatment with phenylbutazone there are no differences in the course of the plasma levels or the rate of elimination from the blood. There is, however, a significant difference in the excretion of the radioactivity in the urine. In the presence of phenylbutazone significantly less HB 419 metabolite is excreted renally. In view of the known alternative route of elimination it is suggested that the amount not excreted in the urine is in compensation eliminated via the bile. There was no difference in the metabolism of glibenclamide between the control and phenylbutazone treated groups. The potentiation by phenylbutazone of HB 419 action, and probably also that of other antidiabetic sulphonylureas, must therefore be due predominantly to other causes (Communication III).
    Notes: Zusammenfassung Stoffwechselgesunde Versuchspersonen erhielten14C-markiertes Glibenclamid in einer Dosis von 1.13 mg/Vpn i.v. gespritzt. Plasmaspiegelverläufe, renale Elimination der Radioaktivität und die Metabolisierung der Substanz wurden untersucht. Zwei Minuten nach der Applikation ist HB 419 praktisch nur im Blutund nach Abschluß der Verteilung weitgehend im Extracellulärraum vorhanden. 53% der Radioaktivität werden über die Nieren in Form von Metaboliten ausgeschieden. Wird den gleichen Probanden nach Prämedikation mit Phenylbutazon Glibenclamid in gleicher Weise verabfolgt, ergibt sich kein Unterschied hinsichtlich der Plasmaspiegelverläufe und der Eliminationsgeschwindigkeit aus dem Blut. Ein signifikanter Unterschied besteht jedoch in der Ausscheidung der Radioaktivität in den Harn (26.3%). In Gegenwart von Phenylbutazon wird ein signifikant geringerer Anteil von HB 419-Metaboliten renal eliminiert. Aufgrund des bekannten zweiten Ausscheidungsweges wird vermutet, daß der fehlende Anteil kompensatorisch über die Galle eliminiert wird. Die Metabolisierung von Glibenclamid weist keine Differenzen zwischen Phenylbutazon-und Kontroll-Gruppe auf. Die Wirkungspotenzierung von HB 419 — wahrscheinlich auch diejenige anderer antidiabetisch wirksamer Sulfonylharnstoffe — durch Phenylbutazon dürfte demnach überweigend andere Ursachen haben. (Mitteilung III).
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford BSL : Blackwell Science
    Alimentary pharmacology & therapeutics 11 (1997), S. 0 
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background: Ranitidine hydrochloride (Zantac) is one of the most extensively studied and widely used drugs of all time. This has provided an excellent opportunity to define its safety profile. Methods: Data from 189 controlled clinical trials in which more than 26000 patients received daily doses of ranitidine for 4 weeks or more were reviewed. More than 80% of patients were treated with up to 300 mg ranitidine daily; the remaining patients received doses of up to 1200 mg daily. Eighty-seven trials were placebo controlled. Analyses of post-marketing surveillance and a database of all spontaneously reported adverse events were also evaluated. Results: Overall in the clinical trial programme adverse events were reported by 20% of those receiving ranitidine compared with 27% of those receiving placebo. The pattern of events was similar in all treatment groups with no evidence of dose-related toxicity in regimens encompassing an eightfold range of therapeutic doses. Similarly in a programme of studies designed to evaluate a dose of ranitidine of 75  mg for non-prescription (over-the-counter) use in the treatment of heartburn, ranitidine was not associated with an adverse event profile distinct from that of placebo. Analysis of spontaneously reported adverse event data allowed identification of rare idiosyncratic events. Conclusions: Review of data from a large population of controlled clinical trials with analyses of postmarketing surveillance studies and spontaneously reported adverse events confirmed the excellent safety profile of ranitidine.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Plant Physiology and Plant Molecular Biology 47 (1996), S. 509-540 
    ISSN: 1040-2519
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Notes: Abstract Plant gene responses to changing carbohydrate status can vary markedly. Some genes are induced, some are repressed, and others are minimally affected. As in microorganisms, sugar-sensitive plant genes are part of an ancient system of cellular adjustment to critical nutrient availability. However, in multicellular plants, sugar-regulated expression also provides a mechanism for control of resource distribution among tissues and organs. Carbohydrate depletion upregulates genes for photosynthesis, remobilization, and export, while decreasing mRNAs for storage and utilization. Abundant sugar levels exert opposite effects through a combination of gene repression and induction. Long-term changes in metabolic activity, resource partitioning, and plant form result. Sensitivity of carbohydrate-responsive gene expression to environmental and developmental signals further enhances its potential to aid acclimation. The review addresses the above from molecular to whole-plant levels and considers emerging models for sensing and transducing carbohydrate signals to responsive genes.
    Type of Medium: Electronic Resource
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  • 7
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    Manchester : Periodicals Archive Online (PAO)
    Journal of Semitic studies. 19 (1974) 173 
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  • 8
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    Unknown
    Leiden : Periodicals Archive Online (PAO)
    Journal for the Study of Judaism in the Persian, Hellenistic, and Roman Period. 3 (1972) 117-148 
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 6 (1995), S. 228-234 
    ISSN: 1573-482X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Second-harmonic generation and spectroscopic absorption measurements were made to study the non-linear optical and stability properties of guest/host polycarbonate thin films in which the guest chromophores were oriented by corona poling. Optimum poling conditions were achieved at temperatures less than the glass-rubber transition temperatures. Stabilized order parameters as high as 0.23 and retention of orientational order as high as 86% were found. Stable, resonance-enhanced, values of the non-linear optical coefficient d 33, for the fundamental of 1.064 Μm, were as high as 31 pm V−1. This value is over four times that predicted by a simple thermodynamic model for isotropic materials. Hydrogen bonding between the guest and polycarbonate is proposed to account for the high d 33 coefficients and long-term stability of the films.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Zeitschrift für Kardiologie 87 (1998), S. s092 
    ISSN: 1435-1285
    Keywords: Schlüsselwörter Myokardvitalität – Prognose – Koronarrevaskularisation – Ventrikelfunktion – Radionuklide ; Key words myocardial viability – hibernation – coronary revascularization – left ventricular function – radioisotopes – tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Non-invasive methods to identify absent or persistent myocardial viability have gained increasing importance in the therapeutic management and risk stratification of patients with ischemic left ventricular dysfunction. Myocardial scintigraphy using thallium-201 and positron emission tomography with metabolic imaging of myocardial glucose metabolism, using fluorine-18 fluoro-deoxyglucose, are today the most widely used nuclear methods for the assessment of myocardial viability. Besides the prediction of reversible regional and global myocardial dysfunction following coronary revascularization, both methods have demonstrated the ability to identify patient subgroups who will benefit most with regard to cardiac prognosis and survival and those patients in whom coronary revascularization has a limited effect with regard to survival and cardiac events. This short review summarizes the clinical impact of both imaging modalities on todays diagnostic approach in patients with ischemic left ventricular dysfunction.
    Notes: Zusammenfassung Nichtinvasive Verfahren zur Vitalitätserkennung haben in den letzten Jahren zunehmende Bedeutung bei der Frage der präoperativen Risiko- und Nutzenabschätzung von koronarrevaskularisierenden Verfahren erhalten. An nuklearmedizinischen Untersuchungsmethoden haben sich im klinischen Alltag die Thallium-201-Myokardszintigraphie sowie die Positronen-Emissions-Tomographie mit Fluor-18-Fluorodeoxyglukose bewährt. Neben der Vorhersage der Reversibilität von regionalen Wandbewegungsstörungen und damit auch der globalen Ventrikelfunktion erlauben beide Methoden die Identifizierung von Patientenpopulationen, die hinsichtlich ihrer Prognose am meisten von revaskularisierenden Verfahren profitieren werden. Diese Übersicht faßt den derzeitigen klinischen Stellenwert beider Methoden bei der Diagnostik der Myokardvitalität in Regionen mit chronischer Ischämie zusammen.
    Type of Medium: Electronic Resource
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