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The bioavailability of three altretamine formulations
E A Runhaar1, J P Neijt, J J Holthuis
1Röpcke-Zweers Hospital, Hardenberg, The Netherlands.
Pharmaceutisch Weekblad. Scientific Edition
|December 15, 1989
Summary
Bioavailability of altretamine preparations varied due to dissolution differences. Extensive first-pass metabolism may influence altretamine
Area of Science:
- Pharmacokinetics and Drug Metabolism
- Pharmaceutical Sciences
Background:
- Altretamine is an antineoplastic agent.
- Understanding altretamine bioavailability is crucial for effective cancer therapy.
Purpose of the Study:
- To compare the bioavailability of two altretamine preparations.
- To investigate the impact of dissolution differences on altretamine bioavailability.
Main Methods:
- Randomized cross-over study design.
- Parallel design for comparing three altretamine preparations.
- In vivo bioavailability assessment.
Main Results:
- Observed dissolution differences among altretamine preparations.
- A trend towards differences in in vivo bioavailability was noted.
- Extensive first-pass metabolism identified as a potential factor.
Conclusions:
- Dissolution variations may affect altretamine bioavailability.
- Further investigation is warranted to confirm bioavailability differences.
- First-pass metabolism significantly influences altretamine pharmacokinetics.