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  • 1995-1999  (1)
  • 1985-1989  (1)
  • L-glutamate  (1)
  • Limited sampling model  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Interaction of 5-fluorouracil with sodium poly-α,L-glutamate (1985)
    Springer
    Colloid & polymer science 263 (1985), S. 682-685 
    Details
    ISSN: 1435-1536
    Keywords: 5-trifluorouracial ; sodium poly-α ; L-glutamate ; interaction ; viscosity ; 5-trifluoromethyluracil
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The purpose of our research is to obtain an understanding of the binding mechanism and its correlations in terms of chemical structure and the potentiactive drug activity. The interaction of 5-fluorouracil (5-fluorouracil is used as an anticancer drug) with sodium poly-α,L-glutamate in aqueous solution was studied with a spectral method and viscosity measurement. From the binding data, the molar change in enthalpy, entropy and the number of binding sites on the polymer were calculated. It is very interesting that the value ofΔH0 of the binding of 5-fluorouracil with sodium poly-α,L-glutamate is smaller than that of 5-trifluoromethyluracil (although 5-trifluoromethyluracil is not used as an anticancer drug, the compound has a similar structure to 5-fluorouracil).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01419893
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Estimation of the area under the concentration-versus-time curve of carboplatin following irinotecan using a limited sampling model (1998)
    Springer
    European journal of clinical pharmacology 54 (1998), S. 725-727 
    Details
    ISSN: 1432-1041
    Keywords: Key words Carboplatin ; Irinotecan ; Limited sampling model ; Pharmacokinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract Objectives: The aim of this study was to develop limited sampling models for estimating the area under the concentration-versus-time curve (AUC) of carboplatin. Methods: Based on pharmacokinetic analyses of 14 patients who received 300 mg · m2 of carboplatin over a 90-min infusion following irinotecan, we developed limited sampling models with stepwise multiple linear regression analysis. We validated these models to be unbiased and precise using pharmacokinetic data of a second group of 14 patients. We also compared the observed and the predicted AUC in the patients using Calvert's formula with the patients' renal function. Results: We developed the following models: AUC (mg · ml−1 · min) = 0.784 × C4 + 1.30 (r 2 = 0.930) and AUC = 0.100 × C0.25 + 0.597 × C4 + 0.140 (r 2 = 0.992), where C0.25 and C4 denote unbound plasma concentrations (μg · ml−1) of carboplatin at 0.25 h and 4 h after the end of infusion, respectively. These models were validated to be unbiased and precise: a mean prediction error (MPE) with standard deviation (SD) = 2.41 (9.45)% and a root mean squared error (RMSE) = 9.42% for the one-sample model, and MPE with (SD) = 1.22 (5.56)% and RMSE = 5.49% for the two-sample model. We also calculated predicted AUC in the patients using Calvert's formula: MPE with (SD) =−5.87 (21.5)% and RMSE = 21.5%. Conclusions: These estimations were, as expected, more accurate than the prediction using Calvert's formula based on patients' renal function. The result of this study confirmed the idea that the pharmacokinetic parameters derived from limited sampling models would be more suitable for pharmacokinetic analysis of carboplatin than those obtained using Calvert's formula.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002280050542
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    Paper (German National Licenses)
    Fulltext
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