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Enantioselective analytical methods in pharmacokinetics with specific reference to genetic polymorphic metabolism
Antonio Marzo1, Erich Heftmann
1IPAS SA, Via Mastri 36, 6853 Ligornetto, Switzerland.
Journal of Biochemical and Biophysical Methods
|January 25, 2003
Summary
Developing enantiospecific bioassays is crucial for understanding chiral drugs, especially when only one enantiomer is active or when drugs are sold as racemates. These assays help determine drug behavior and stability.
Area of Science:
- Pharmacology
- Analytical Chemistry
- Drug Development
Background:
- The rise of enantiospecific drugs necessitates understanding chiral drug pharmacokinetics.
- Enantiospecific bioassays are vital for drugs marketed as racemates or when only one enantiomer is pharmacologically active.
Purpose of the Study:
- To review enantiospecific bioassays for chiral drugs.
- To discuss methods, approaches, derivatization needs, and challenges in quantifying enantiomers.
- To address stereogenic center stability and polymorphic metabolism.
Main Methods:
- Review of existing enantiospecific bioassay methodologies.
- Discussion of challenges in low-level quantification (pg/ml range) for in vivo studies.
- Consideration of chemical derivatization techniques.
Main Results:
- Enantiospecific bioassays are essential for accurate pharmacokinetic profiling of chiral drugs.
- Quantification, particularly in vivo, presents significant challenges.
- Stereogenic center stability and polymorphic metabolism add complexity.
Conclusions:
- Enantiospecific bioassays are indispensable tools in modern drug development and analysis.
- Addressing assay complexity and quantification limits is key.
- Further research into stereospecific metabolism is warranted.