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  • Metabolism  (2)
  • Adverse drug reactions  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Archives of Gerontology and Geriatrics 12 (1991), S. 321-328 
    ISSN: 0167-4943
    Keywords: Adverse drug reactions ; Geriatric patients ; Multimorbidity ; Pharmacokinetics
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 59 (1981), S. 909-910 
    ISSN: 1432-1440
    Keywords: Pharmacokinetics ; Spironolactone ; Canrenone ; Age ; Metabolism ; Pharmakokinetik ; Stoffwechsel ; Alter ; Spironolacton ; Canrenon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 10 alten (77,2 Jahren) Patientinnen und 10 jungen (20,1 Jahren) weiblichen Probanden wurde die Pharmakokinetik von Canrenon nach mehrfacher täglicher oraler Gabe von 100 mg Spironolcaton unter den Bedingungen des steady-state untersucht. Die Konzentrationsbestimmungen erfolgten simultan mit einer spezifischen hochdruckflüssigkeits-chromatographischen und mit einer weniger spezifischen fluorimetrischen Methode. Maximale und mittlere Serumkonzentrationen von Canrenon waren bei den älteren Patientinnen etwa doppelt so hoch wie bei den jungen Versuchspersonen. Dies war die Folge einer verminderten Eliminationskapazität für Spironolacton bei den alten Patientinnen. Dabei war der Anteil von fluorogenen Metaboliten zu Carenon bei den alten Patientinnen höher als bei den jungen Probanden, so daß offenbar auch Verschiebungen in den Stoffwechselwegen von Spironolacton im Alter auftreten.
    Notes: Summary The pharmacokinetics of canrenone were compared in 10 elderly (77.2 years) patients and 10 young (20.1 years) female persons after multiple oral dosing of 100 mg Spironolactone during steady-state. The concentrations were determined using both a specific HPLC-assay and a nonspecific fluorometric assay. Maximum as well as mean concentrations of canrenone in serum of the elderly subjects were approximately twice as high as those in the young. This was the consequence of an impaired capacity for elimination of spironolactone in the elderly subject. In addition the ratio of the other fluorigenic metabolites and of canrenone were higher in the elderly. Thus also shifts in the metabolic pathways of spironolactone occure with progressing age.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 60 (1982), S. 1497-1500 
    ISSN: 1432-1440
    Keywords: Desacetyl cefotaxime ; Pharmacokinetics ; Metabolism ; Geriatric patients ; Multiple diseases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Plasma concentrations of cefotaxime and desacetyl cefotaxime were determined by HPLC in geriatric patients with multiple diseases. Comparison with a younger control group of healthy volunteers showed a prolongation of half-life of CTX and dCTX in the older patients. A significant correlation between pharmacokinetic parameters of dCTX and other clinical and chemical parameters was found. Half-life of dCTX was positively correlated with age of the geriatric patients (P〈0.05). There was also a significant relationship between CHE in serum and plasma peak concentrations of dCTX. Time until reaching plasma peak concentrations correlated closely with total bilirubin (P〈0.01), CHE (P〈0.001), cholesterol (P〈0.01), and urea (P〈0.01). Accumulation of the pharmacologically active metabolite dCTX could not be excluded in one patient with kidney disease. In accordance with other investigators it is recommended to reduce the dose of cefotaxime in geriatric patients with kidney diseases.
    Type of Medium: Electronic Resource
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