Related Experiment Videos
A simple pharmacokinetic method for separating the three acetylation phenotypes: a preliminary report
British Journal of Clinical Pharmacology
|March 1, 1982
Summary
A new pharmacokinetic method accurately distinguishes three N-acetyltransferase (NAT) phenotypes (slow, intermediate, rapid) using limited sampling. This simplifies NAT genotyping and phenotyping for personalized medicine.
Area of Science:
- Pharmacology
- Biochemistry
- Genetics
Background:
- N-acetyltransferase (NAT) enzyme phenotyping traditionally distinguished only slow and rapid acetylators.
- Differentiating heterozygous rapid from homozygous rapid phenotypes required complex, time-consuming pharmacokinetic studies with sulphadimidine.
Purpose of the Study:
- To present a simplified pharmacokinetic method for accurate N-acetyltransferase (NAT) enzyme phenotyping.
- To enable clear distinction between slow, intermediate, and rapid acetylator phenotypes.
Main Methods:
- A study involving ten healthy volunteers.
- Collection of one urine sample and hourly plasma samples over a 5-hour period.
- Calculation of total body clearance (TBC) and metabolic clearance (MC) from collected samples.
Main Results:
- The simplified method accurately calculated pharmacokinetic parameters (TBC and MC).
- The method successfully distinguished between slow, intermediate, and rapid acetylator phenotypes.
- The elimination rate constant distribution was too wide for clear phenotype separation.
Conclusions:
- A simple, accurate pharmacokinetic method for NAT phenotyping using limited sampling is established.
- This method facilitates the identification of slow, intermediate, and rapid acetylators.
- Further refinement may be needed for precise separation based on elimination rate constants.